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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
HSC5007
Abies concolor
J. O. Sawyer
1968-10-12
756
Colusa
Colusa/Lake Co. line, Snow Mtn., boundary N of Clear Lake and W of Stony Ford
2134
Comment
CHSC46859
Acer macrophyllum
Vernon Oswald
1989-9-12
4007
Colusa
Goat Mtn Rd 3.0 mi wsw of Lodoga-Stonyford Rd, ca. 6 mi (air) s of Stonyford.
426
Comment
UCD80834
Acer macrophyllum
Ellen Dean; G. Harrington, J. Alderson, M. Bibbo, B. Rice
2009-3-25
5291
Colusa
BLM Bear Creek (Payne) Ranch, lands to the SW of the jct of Hwys 16 and 20. Canyon to the north of Brophy Canyon.
239
Comment
CAS-BOT-BC21710
Achillea millefolium
Roxana S. Ferris
1917-4-14
586
Colusa
5 mi. west of Arbuckle
Comment
JEPS73474
Achillea millefolium
L. R. Heckard
1972-7-9
3083
Colusa
along trail from Frog Pond to Milk Ranch Frog Pond; Snow Mt. (southern range extension)
1950
Comment
JEPS80821
Achillea millefolium
L. R. Heckard and J. C. Hickman
1981-7-31
5792
Colusa
along, on east side of Snow Mt. Dark Hollow Creek; Snow Mt.
1584
Comment
UC1071729
Achillea millefolium
J. Clausen
1939-6-26
1743 -4
Colusa
17 mi w of, (just before entering Lake County) Williams
Comment
UCD57663
Achillea millefolium
Erica A. Smith; with Plant Biology 102
2007-4-29
1
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central/Eastern part of ranch. Craig Canyon. Along unimproved road.
313
Comment
UCD82114
Achillea millefolium
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5642
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
839
Comment
CHSC32199
Achnatherum occidentale subsp. californicum
James D. Jokerst
1980-8-8
1082
Colusa
North Coast Ranges. Near Snow Mountain (West).
2133
Comment
JEPS75746
Achnatherum occidentale subsp. californicum
L. R. Heckard
1974-9-11
3945
Colusa
e of Foutch Camp; Snow Mt., Trout Creek
1889
Comment
CAS-BOT-BC29877
Achyrachaena mollis
B. Ellyson; J. Hooke; D. Newman
1996-5-4
40
Colusa
Bear Valley, Leesville, 1.3 mi. south fo Brim Road on Bear Valley Road; 14.7 mi. on Walker Ridge Road
414
Comment
CHSC27825
Achyrachaena mollis
K. D. Whitney
1978-4-8
32
Colusa
Ca. 0.3 mi w of jct of Hwys 20 and 16, s side of Bear Creek, ca. 18 mi sw of Williams.
321
Comment
UC75911
Achyrachaena mollis
Miss M. Alice King
1905-1-1
Colusa
near College City; Sacramento Valley
Comment
UCD163687
Achyrachaena mollis
Craig Thomsen
1999-4-15
1989
Colusa
Bear Valley. About 5 miles north of Hwy 20, west of Bear Valley Rd.
Comment
UCD64421
Achyrachaena mollis
Craig D. Thomsen
2000-4-28
2177
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
CAS-BOT-BC29876
Achyrachaena mollis
B. G. Baldwin
1986-4-13
598
Colusa
Bear Valley, 7.3 miles north of junction with California State Highway 20 along Bear Valley Road
Comment
UCD64035
Acmispon americanus var. americanus
Craig D. Thomsen
2000-6-23
2413
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, Colusa Co. milepost 2.63.
304
Comment
CHSC94419
Acmispon brachycarpus
Lowell Ahart
2006-8-22
13217
Colusa
South side of Stony Creek, about 100 yards west of the bridge across Stony Creek, just north of Stonyford.
349
Comment
UCD56902
Acmispon brachycarpus
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3505
Colusa
BLM Payne Ranch. Entrance to Craig Canyon on west side of Hwy. 16. Ca. 2 road miles south of junction of Hwy. 16 and Hwy. 20.
304
Comment
UCD63918
Acmispon brachycarpus
Craig D. Thomsen
2001-5-24
2508
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection (between Colusa Co. mileposts 2.17 and 2.25).
342
Comment
UCD64282
Acmispon brachycarpus
Craig D. Thomsen
2000-3-31
2098
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UCR261746
Acmispon brachycarpus
Ann Howald
2003-6-9
2362 B
Colusa
Inner North Coast Ranges, Indian Valley, east side of East Park Reservoir, c. 3 miles north of Lodoga, near Rocky Ridge camping area
424
Comment
UCD66677
Acmispon denticulatus
Craig D. Thomsen
2000-5-11
2290
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
UCD72387
Acmispon glaber
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5113
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Southwestern edge of ranch above Cache Creek Canyon along ridge trail.
550
Comment
SD131845
Acmispon grandiflorus var. grandiflorus
L. R. Heckard
1969-5-28
2233
Colusa
On road above and west of Fouts Springs.
762
Comment
UCD104192
Acmispon grandiflorus var. grandiflorus
L. R. Heckard
1969-5-29
2240
Colusa
Along Trough Spring Ridge road, 0.2 mile north of its junction with Crackerbox Ridge road (about 6 1/2 air miles southeast of Stonyford).
1127
Comment
HSC48196
Acmispon micranthus
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3960
Colusa
Along Bear Valley Rd., 2.5 mi. from junction with Hwy. 20
366
Comment
CHSC81265
Acmispon rubriflorus
L. P. Janeway; B. Castro
2001-4-25
7026
Colusa
Vicinity of Grapevine Creek, Sites-Lodoga Road, and Eggman Canyon.
329
Comment
SD247416
Acmispon rubriflorus
Ann Howald
2003-6-9
2362 A
Colusa
Inner North Coast Ranges: Indian Valley, east side of East Park Reservoir, c. 3 miles north of Lodoga, near Rocky Ridge camping area (Lodoga 7.5'Q)
423
Comment
UCR261727
Acmispon rubriflorus
Ann Howald
2003-6-9
2363
Colusa
Inner North Coast Ranges, Indian Valley, east side of East Park Reservoir, c. 3 miles north of Lodoga, east of Sleepy Hollow camping area
383
Comment
UCD163704
Acmispon wrangelianus
Craig Thomsen
1999-5-10
2016
Colusa
Bear Valley. About 9 miles north of Hwy 20.
Comment
UCD57278
Acmispon wrangelianus
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3646
Colusa
BLM Payne Ranch. Mouth of Craig Canyon. Along unimproved road, about 2 road miles south of junction of Hwy 20 and Hwy 16. .
316
Comment
CAS-BOT-BC29714
Acroptilon repens
F. L. Shanks
1931-10-1
s.n.
Colusa
Mills Orchard, near Maxwell
Comment
CAS-BOT-BC133151
Adenostoma fasciculatum
Roxana S. Ferris
1917-4-14
594
Colusa
5 mi west of Arbuckle along Sand Creek, Arbuckle - Rumsey Road
Comment
HSC72177
Adenostoma fasciculatum
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9555
Colusa
Bear Valley Rd., 1.3 mi. from its junction with Hwy. 20
366
Comment
CDA4026
Aeschynomene rudis
G. D. Barbe, Daryl Brown
1990-8-29
4392
Colusa
West side of Boggs Road between Dodge and Fonseca Roads; 5.6 km southwest of Princeton.
0
Comment
CDA4027
Aeschynomene rudis
G. D. Barbe, June McCaskill
1990-9-5
4397
Colusa
West side of Boggs Road between Dodge and Fonseca Roads; 5.6 km southwest of Princeton.
0
Comment
SFV15097
Aeschynomene rudis
B. J. McCaskill, G. D. Barbe (4397)
1990-9-5
s. n.
Colusa
West side of Boggs Road between Dodge and Fonseca Roads. MDB&M.
Comment
UCD14547
Aesculus californica
Rob Ickel
1989-5-27
12
Colusa
California, Colusa Co.; along Highway 16, 1.5 mi south of junction with Highway 20;
316
Comment
UCD81226
Aesculus californica
Ellen Dean; K. Mawdsley, B. Rice, G. Harrington, and J. Alderson
2009-5-6
5563
Colusa
Payne Ranch, lands to the SW of the jct. of Hwys. 16 and 20. Destinella Flat area on the S side of Hwy. 20. Canyon to the south of Destanella Flat.
446
Comment
JEPS83147
Ageratina occidentalis
L. R. Heckard
1974-9-10
3887
Colusa
stream of upper reaches Dark Hollow Creek; Snow Mt., East Peak
2011
Comment
UCD66705
Agoseris grandiflora
Craig D. Thomsen
2001-4-12
2490
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
UCD82115
Agoseris grandiflora
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5643
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
839
Comment
CHSC79649
Agoseris heterophylla
L. P. Janeway; B. Castro
2000-5-2
6690
Colusa
Vicinity of Grapevine Creek and Sites-Lodoga Road.
225
Comment
UCD65647
Agoseris heterophylla
Craig D. Thomsen
2000-4-28
2188
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
UCD82475
Agoseris heterophylla
Craig Thomsen; G. Harrington
2009-5-12
2853
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
707
Comment
UCSC010468
Agoseris heterophylla var. cryptopleura
Dylan M. Neubauer, Tim Forsell
2016-3-31
595
Colusa
(NCoRI) Walker Ridge, Walker Ridge Road, 1.78 air-miles sse Cold Spring Mountain
815
Comment
JEPS35661
Agoseris heterophylla var. cryptopleura
W. L. Jepson
1932-5-7
16266
Colusa
Indian Valley, north of Leesville.
518
Comment
JEPS75880
Agrostis alba
L. R. Heckard
1974-9-9
3851
Colusa
just se Foutch Camp; Snow Mt.
1889
Comment
CHSC94532
Agrostis avenacea
Lowell Ahart
2006-8-22
13227
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
JEPS80443
Agrostis exarata
L. R. Heckard and J. C. Hickman
1980-9-15
5420
Colusa
w of Summit Springs; Snow Mt.
1554
Comment
CHSC94474
Agrostis viridis
Lowell Ahart
2006-8-9
13159
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
CAS-BOT-BC445318
Alisma lanceolatum
Milo S. Baker
1946-9-5
11631
Colusa
Along Hiwy. bet. Colusa and Williams
Comment
CHSC94417
Alisma triviale
Lowell Ahart
2006-8-22
13231
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
UCD137979
Alisma triviale
June McCaskill; W. A. Harvey
1954-8-9
360
Colusa
2 miles east of Princeton and 300 yards south of Glenn County line.
Comment
UCD63709
Alisma triviale
Craig D. Thomsen
2006-8-17
2711
Colusa
BLM Payne Ranch. About 0.25 mile south of intersection of Hwy 16 and Hwy 20. Near confluence of Hamilton Flat and Jackson Canyon drainages, about 10 meters east of Bear Creek, west of Hwy 16.
Comment
UCD141857
Allium
L. K. Mann
1958-5-3
s.n.
Colusa
about 0.8 mile toward Wilbur Springs from Junction of California Highway #16 and #20.
Comment
CAS-BOT-BC131915
Allium
Roger Raiche
1985-3-19
RR 50160
Colusa
Colusa-Lake County line, Walker Ridge, 3.4 miles south of north end of Barrel Springs Campground on Walker Ridge Road
1036
Comment
JEPS120965
Allium amplectens
Lowell Ahart
2013-5-1
18682
Colusa
Near a small drainage, N of the wash and of Hwy 20, just E of the Lake County Line, 12.2 air miles ENE of the town of Clear Lake, 17.1 air miles W of Williams.
Comment
JEPS80119
Allium amplectens
L. R. Heckard with J. Hickman
1980-7-1
5275 A
Colusa
near bottom of s side of East Peak; Snow Mt.
2042
Comment
UCD82390
Allium amplectens
Craig Thomsen; G. Harrington
2009-5-12
2832
Colusa
Colusa County. Walker Ridge. South of spur road en route to Eaton Springs, about 1/2 mile east of Walker Ridge Rd. About 100 yds south of road (ravine with spring below).
822
Comment
UCD82515
Allium amplectens
Craig Thomsen; G. Harrington
2009-5-12
2873
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
710
Comment
CHSC115627
Allium amplectens
David Isle; Terril Wolt
2015-4-8
2146
Colusa
Northe Coast Range: N of Fouts Springs; just N of the S fork Stony Creek. W of FS Gate to Bathhouse (Welton Glade) Trailhead ~200-300 ft.. In drainage ditch on S edge rd. (Fouts Springs California: 10S -0529687E, 4356519N).
Comment
UC1561213
Allium bolanderi
Barbara Ertter
1989-7-1
8619
Colusa
road to Goat Mt. Lookout 0.4 mi s Rt. M-10 (Bear Creek-Fouts Spring Rd.) (at head of S Fk. Stony Creek, ca. 12 air mi wsw of Stonyford); S. Fk. Stony Creek
1371
Comment
UCD138461
Allium cratericola
Louis K. Mann
1961-3-19
s.n.
Colusa
Bear Valley.
396
Comment
UCD141844
Allium cratericola
L. K. Mann; M. D. Mann
1961-4-2
s.n.
Colusa
Bear Valley.
396
Comment
UCD141847
Allium cratericola
L. K. Mann; A. Saghir
1963-5-15
s.n.
Colusa
south end of Bear Valley.
Comment
CHSC14088
Allium falcifolium
L. V. Ritter
1969-4-30
239
Colusa
Ca. 100 yds. W of the junction of Highway 20 and 16, Ca 50 yds. N of Highway 20.
Comment
UCD110814
Allium falcifolium
Christopher Mallek
2008-1
s.n.
Colusa
Pacific Ridge. Border of Colusa and Lake Counties.
1101
Comment
UCD63019
Allium falcifolium
Ellen Dean; C. Thomsen, N. Voegtly, J. Alderson, G. Harrington
2008-3-30
4671
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Slopes to the west of Cowboy Camp on the west side of Bear Creek.
419
Comment
CAS-BOT-BC467302
Allium falcifolium
Roxana S. Ferris
1926-4-23
6570
Colusa
Dry Creek near Stonyford
Comment
POM174570
Allium falcifolium
Roxana S. Ferris
1926-4-23
6570
Colusa
Dry Creek near Stonyford.
Comment
UCD141835
Allium falcifolium
L. K. Mann
1957-5-30
s.n.
Colusa
road from Goat Mt. Lookout to Upper Lett's Valley.
1524
Comment
UCD141854
Allium falcifolium
Roman Gankin
1958-4-25
s.n.
Colusa
4 miles west of Leesville. Near head of Bear Valley.
304
Comment
SEINET12043975
Allium fimbriatum
A. Eastwood, Howell, J. T.
1938-1
5626
Colusa
Lake-- Colusa county line on road to Williams
Comment
UC2014135
Allium fimbriatum subsp. purdyi
Michele Lanctot with Plant Biology 102
2007-4-29
2
Colusa
Colusa County: Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central part of ranch. Thompson Canyon. Bottom of serpentine slope in the middle of the path.
Comment
CAS-BOT-BC135883
Allium fimbriatum subsp. purdyi
M. S. Baker
1937-5-17
8657
Colusa
Hiway 20, nr. Lake Co. line.
Comment
CHSC112220
Allium fimbriatum var. purdyi
Lowell Ahart; John Dittes, Josephine Guardino
2013-4-26
18641
Colusa
Inner North Coast Range. On the north side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
HSC42391
Allium fimbriatum var. purdyi
Dale McNeal
1977-5-18
2028
Colusa
Beside Hwy. 20, 0.9 mi. W of the junction with Hwy. 16
Comment
HSC67119
Allium fimbriatum var. purdyi
Dale McNeal
1980-4-26
2318
Colusa
Above Bear Valley Rd., 1.4 mi. N of its junction with Hwy. 20
Comment
RSA161099
Allium fimbriatum var. purdyi
Peter H. Raven
1962-5-31
17908
Colusa
Highway 20, 2.5 miles east of Lake County Line
Comment
UCD138533
Allium fimbriatum var. purdyi
L. K. Mann
1958-5-3
s.n.
Colusa
about 0.8 mile toward Wilbur Springs from Junction of California Highway #16 and #20.
Comment
UCD141783
Allium fimbriatum var. purdyi
L. K. Mann
1958-5-3
s.n.
Colusa
Colusa - Lake County: California Highway #20 at county line.
Comment
UCD66911
Allium fimbriatum var. purdyi
Craig D. Thomsen
2008-4-27
s.n.
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Slopes to the northwest of Eula Canyon and WNW of Cowboy Camp on the west side of Bear Creek.
451
Comment
UCR198144
Allium fimbriatum var. purdyi
Ellen Dean, C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3672
Colusa
BLM Payne Ranch, lands to the southwest of junction of Hwy 20 and Hwy 16. Thomposon Canyon, near juncture with Craig Canyon, above Thompson Creek
366
Comment
UCR80282
Allium fimbriatum var. purdyi
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3928
Colusa
Along Bear Valley Road c. 2 mi from the junction w/ State Route 20.
366
Comment
SEINET3884500
Allium fimbriatum var. purdyi
Thomas Nelson, Jane P. Nelson
1978-4-30
3972
Colusa
State Route 20 just east of Colusa-Lake county line.; 0
549
Comment
CHSC2063
Allium serra
D. Smith
1935-5-12
Colusa
Stonyford Hills.
Comment
CHSC77625
Allium serra
Heidi West; Jenny Marr, Julie Cunningham
1998-4-15
Colusa
Vicinity of Grapevine creek and Sites-Lodoga Road.
146
Comment
CHSC86119
Allium serra
Jenny Marr; Caroline Warren
1998-5-4
Colusa
Vicinity of Sites, Stone Corral Creek, and Antelope Valley.
106
Comment
UC630432
Allium serra
Annetta Carter
1938-5-7
1373
Colusa
4 mi n Rumsey; Inner North Coast Range, Comanche Hills
243
Comment
CAS-BOT-BC475542
Allium serra
Roxana S. Ferris
1926-4-23
6584
Colusa
Field 2 miles from Stonyford
Comment
CAS-BOT-BC475543
Allium serra
Roxana S. Ferris
1917-4-14
557
Colusa
Foothills 7 miles west of Arbuckle
Comment
CAS-BOT-BC475549
Allium serra
James R. Shevock
1973-4-14
2551
Colusa
Occasional along Leesville Road; Northern Coast Ranges
Comment
SEINET3879172
Allium serra
D. W. McNeal, David Isle
1991-5-22
3821
Colusa
On a steep road bank above Hwy #162, 4.3 mi E of the Stony Creek Bridge N of Elk Creek.; 0
Comment
UCD141808
Allium serra
L. K. Mann
1958-5-3
s.n.
Colusa
0.2 mi. toward Clear Lake from junction of California Highway #16 and #20.
Comment
UCD141826
Allium serra
M. Yamaguchi; D. Hughes, D. G. Hunt
1965-4-29
s.n.
Colusa
ca. 8.8 miles west of Maxwell (U.S. Highway 99W) or ca. 0.6 mile east of Sites about 180 feet northwest of bridge and old stone house.
Comment
UCD141828
Allium serra
M. Yamaguchi; D. Hughes, D. G. Hunt
1965-4-29
s.n.
Colusa
along road 3.2 miles past junction of California 16 and 20, toward Rumsey, SW part of county.
Comment
UC1051499
Allophyllum divaricatum
Helen K. Sharsmith
1953-6-19
4280
Colusa
1 mi. n. Trough Springs (on Trough Springs Ridge); Inner N. Coast Ranges, Mendocino Nat'l Forest, Trough Spring
914
Comment
RSA113928
Allophyllum divaricatum
H. K. Sharsmith
1953-6-19
4280
Colusa
One mile north of Trough Springs on Trough Springs Ridge. Mendocino National Forest
915
Comment
HSC72148
Allophyllum gilioides
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9561
Colusa
Bear Valley Rd., 2.1 mi. from its junction with Hwy. 20
366
Comment
UCD82489
Allophyllum gilioides
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5675
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
853
Comment
UCD84444
Allophyllum gilioides
Ellen Dean; C. Thomsen, G. Harrington, R. Wilmarth, R. Wenk
2010-6-2
6052
Colusa
Walker Ridge. Along Walker Ridge Road, N of turnoff to Indian Valley Reservoir but S of Til Jones Spring. Many old undeveloped roads here.
817
Comment
RSA783325
Allophyllum gilioides subsp. violaceum
R. R. Halse
2010-3-25
7849
Colusa
Along State Hwy 20 ca. 10.7 miles SW of its junction with Interstate Hwy 5 at Williams. In Salt Canyon.
154
Comment
JEPS73496
Alnus incana subsp. tenuifolia
L. R. Heckard
1972-7-10
3112
Colusa
Trout Creek Snow Mt. (at crossing of trail to Box Springs (ca 10 mi w of Stonyford))
1828
Comment
JEPS80819
Alnus incana subsp. tenuifolia
L. R. Heckard and J. C. Hickman
1981-7-31
5790
Colusa
Dark Hollow Creek Snow Mt. (e side of mt.)
1584
Comment
CDA12377
Alnus rhombifolia
G. F. Hrusa
1996-1-2
12630
Colusa
Inner North Coast Ranges; Little Stony Creek, +/- 2 miles W of intersection of Cedar Camp Rd. and Stonyford-Lodoga Rd.
Comment
RSA718199
Alnus rhombifolia
L. Ahart
2006-8-9
13108
Colusa
On north side of Stony Creek, at Mine Camp, about 3.5 miles (air) west of Stonyford.
423
Comment
UCD110005
Alnus rhombifolia
G. F. Hrusa
1996-1-23
12630
Colusa
Riparian area of Little Stony Creek, about 2 miles W of intersection of Cedar Camp Rd. and Stonyford-Lodoga Rd.
475
Comment
SEINET10510969
Alopecurus californicus
Roxana S. Ferris
1917-4-12
Ferris 549
Colusa
4 miles E of Williams. Alkali Plains.
Comment
RSA198503
Alopecurus saccatus
Roxana S. Ferris
1917-8-12
549
Colusa
4 miles east of Williams, alkali plains.
Comment
CHSC112624
Amaranthus californicus
Lowell Ahart
2013-10-1
19089
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
UCD39269
Amaranthus palmeri
B. Crampton
1958-6-26
4973
Colusa
Grieve road just n.e. of Hershy R.R. siding, 5.5 miles south of College City, Colusa County.
Comment
CAS-BOT-BC55588
Ambrosia psilostachya
Roxana Stinchfield
1916-6-17
276
Colusa
Cemetery, College City
Comment
CHSC94748
Ambrosia psilostachya
Lowell Ahart
2006-9-26
13350
Colusa
Between the deep ditch and the Delevan National Wildlife Refuge, north side of Maxwell Road, about 3 miles west of Colusa Princeton Road, about 5 1/2 miles east of Maxwell.
24
Comment
JEPS104399
Ambrosia psilostachya
Lowell Ahart
2003-10-23
10659
Colusa
Along Squaw Creek, just south of East Park Reservoir, ca 1/8 mi nw of Sites Lodoga Rd, ca 1 mi n of Lodoga, ca 21 mi w of Maxwell.
368
Comment
JEPS110533
Ambrosia psilostachya
Lowell Ahart
2006-10-31
13518
Colusa
About 20 yards northeast of the bridge across Stony Creek, just north of Stonyford
347
Comment
POM50992
Ambrosia psilostachya
Roxana Stinchfield
1916-7-8
376
Colusa
Truck garden Stinchfield Ranch - Sycamore Slough.
Comment
RSA724821
Ambrosia psilostachya
L. Ahart
2006-9-29
13350
Colusa
Between the deep ditch and the Delevan National Wildlife Refuge, north side of Maxwell road, about 3 miles west of Colusa Princeton Road, about 5.5 mileseast of Maxwell.
24
Comment
UCD72396
Ambrosia psilostachya
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5122
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Confluence of Cache and Bear Creeks at southern tip of ranch.
198
Comment
JEPS110091
Ammannia robusta
Lowell Ahart
2006-8-9
13142
Colusa
North side and just east of the bridge across Stony Creek, just north of Stonyford
347
Comment
CHSC25321
Ammi visnaga
Hayes; Warner, Schlising
1977-8-23
48
Colusa
Along River Rd. on the east side of the Sacramento River, 3.5 mi n Of Colusa.
50
Comment
UCD127170
Ammi visnaga
V. C. Bryant
1929-9-1
s.n.
Colusa
location unknown.
Comment
RSA0090976
Amsinckia intermedia
R. R. Halse
2001-3-22
5944
Colusa
Williams; along a vacant lot by 455-4th Street.
18
Comment
SEINET7096533
Amsinckia intermedia
Richard R. Halse
2001-3-22
5944
Colusa
Williams; along a vacant lot by 455 - 4th street. 39 9.52 N 122 8.84W (Converted to decimal degrees). Elevation 18 m.
18
Comment
HSC31598
Amsinckia intermedia
Thomas E. Higley
1974-5-5
84
Colusa
0.5 mi. S of N Fork Campground
412
Comment
CHSC86518
Amsinckia lunaris
B. Castro; Beth Hendrickson
2003-3-24
1397
Colusa
Vicinity of Sites, hills N of the Sites-Lodoga Rd, and Stone Corral Creek.
277
Comment
SBBG126065
Amsinckia lunaris
G. K. Helmkamp with E. A. Helmkamp
2009-3-11
14368
Colusa
St Hwy 20, 9.7 mi SW of Williams, on N side of Salt Crk
162
Comment
UCD63027
Amsinckia lunaris
Ellen Dean; C. Thomsen, N. Voegtly, J. Alderson, G. Harrington
2008-3-30
4679
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Basin at top of ridge to the northwest of Eula Canyon and southwest of Cowboy Camp on the west side of Bear Creek.
526
Comment
UCD63713
Amsinckia lunaris
Craig D. Thomsen
2008-3-30
2722
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy 16 and Hwy 20, near ridgeline and headwaters of Eula Canyon drainage.
501
Comment
UCD77237
Amsinckia lunaris
Robert E. Preston
2005-4-10
2330
Colusa
Ca. 0.9 mi ESE of Wilbur Springs, along Bear Valley Road.
373
Comment
RSA0089732
Amsinckia lunaris
B. Castro
2003-3-18
1384 -a
Colusa
Vicinity of Sites (Offstream Storage Investigation: Sites S. Bridge road route), hills N of the Sites-Lodoga Road, and Stone Corral Creek.
198
Comment
CHSC37413
Amsinckia lycopsoides
R. A. Schlising; K. R. Stern
1980-5-5
3583
Colusa
Colusa National Wildlife Refuge; southwest of Colusa; southwest corner of refuge, north of Ware Road.
Comment
HSC94205
Amsinckia menziesii
D. Haskamp, E. Sonnenblick, M. Taft
1995-4-1
13
Colusa
On Bear Valley Rd., 1.2 mi. S of the junction with Brim Rd.
415
Comment
UCD163216
Amsinckia menziesii
Craig D. Thomsen
2000-4-28
2193
Colusa
Bear Creek Botanical Management Area. CalTrans right-of-way along Hwy 20 (south side), about 0.3 mile west of Hwy 20/16 intersection.
345
Comment
UCD67070
Amsinckia menziesii
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5098
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western part of ranch along ridge trail at Cache Creek Canyon. Just south of junction with trail that leads east to Brophy Canyon and Thompson Creek.
494
Comment
CHSC34508
Ancistrocarphus filagineus
J. D. Prouty
1980-4-12
80 .66
Colusa
Roadbank of Hwy 20 ca. 0.3 mi W of junction with Hwy 16 near Bear Creek Bridge.
320
Comment
HSC48170
Ancistrocarphus filagineus
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3934
Colusa
Along Bear Valley Rd., 2 mi. from the junction with State Route 20.
366
Comment
JEPS16206
Ancistrocarphus filagineus
Rimo Bacigalupi and Arthur Holmgren
1950-4-26
3182
Colusa
just w of, (w of base of grade to Indian Valley (Bartlett Mt. Road)) Bear Valley; Inner North Coast Ranges, Indian Valley, Bear Valley
Comment
UC1056275
Ancistrocarphus filagineus
Rimo Bacigalupi and Arthur Holmgren
1950-4-26
3182
Colusa
just w of, (just w of base of grade to Indian Valley (Bartlett Mtn. Rd.)) Bear Valley; Inner North Coast Ranges
Comment
UC1923720
Ancistrocarphus filagineus
A. Liston and M. Blumler
1987-4-26
667 -11
Colusa
Bear Valley. Lodoga Road 6.6 miles S of Bartlett Springs Jct. Valley floor
Comment
UCD163684
Ancistrocarphus filagineus
Craig Thomsen
1999-4-15
1985
Colusa
Bear Valley. About 5 miles north of Hwy 20, west of Bear Valley Rd.
Comment
CHSC81290
Androsace elongata subsp. acuta
L. P. Janeway; B. Castro
2001-4-19
7025
Colusa
Vicinity of Grapevine Creek, Sites-Lodoga Road, and Scotties Spring.
280
Comment
CHSC86874
Androsace elongata subsp. acuta
B. Castro
2003-4-1
1409
Colusa
Vicinity of Sites, hills N of the Sites-Lodoga Rd, and Stone Corral Creek, on low N-facing cutbank of dirt road which contours along hillside.
280
Comment
CHSC32214
Antennaria geyeri
James Jokerst
1980-8-6
1060
Colusa
North Coast Ranges. Near Snow Mountain (West).
Comment
UC29539
Anthemis cotula
J. Burtt Davy
1898-5-1
4280
Colusa
Willows
Comment
UCD163218
Anthemis cotula
Craig D. Thomsen
2000-5-11
2325
Colusa
Bear Creek Botanical Management Area. CalTrans right-of-way along Hwy 20 (south side), about 0.3 mile west of Hwy 20/16 intersection.
345
Comment
CHSC83681
Antirrhinum subcordatum
L. P. Janeway; Shirley Innecken
2002-5-1
7528
Colusa
Inner North Coast Ranges. Vicinity of Grapevine Creek, Rena Canyon, and Scotties Canyon.
243
Comment
UCD70222
Antirrhinum vexillocalyculatum
D. Sanchez-Mata
1998-7-9
s.n.
Colusa
Bear Valley. Bear Valley Road. Bear Valley Creek.
370
Comment
CHSC94710
Antirrhinum virga
Lowell Ahart
2006-6-15
12792
Colusa
On the west side of Forest Road 18N03, about 100 yards north of Mill Creek, near Fouts, Mill Creek Campgrounds, about 5 3/4 miles (air) west-southwest of Stonyford.
500
Comment
JEPS108788
Antirrhinum virga
Lowell Ahart
2006-6-15
12792
Colusa
On the west side of Forest Road 18N03, about 100 yards north of Mill Creek, near Fouts, Mill Creek Campgrounds, about 5 3/4 miles (air) west-southwest of Stonyford
500
Comment
RSA724838
Antirrhinum virga
L. Ahart
2006-6-15
12792
Colusa
On the west side of Forest Road 18N03, about 100 yards north of Mill Creek, near Fouts, Mill Creek Campgrounds, about 5 3/4 miles (air) west-southwest of Stonyford.
500
Comment
RSA0105546
Antirrhinum virga
David Isle
2015-6-20
2157
Colusa
North Coast Ranges: ~4 mi W of Stonyford; SE of curve at culvert crossing just E of old dumpsite rd jct; uphill ~200' S of 18N01.
439
Comment
CHSC91007
Aphanes occidentalis
D. Isle
2002-4-18
299
Colusa
Mendocino National Forest--North Coast Ranges. Middle Fork Stony Creek Watershed. N of Chlorinator bldg., Rd. to Bath House Trail.
548
Comment
CDA12100
Apiastrum angustifolium
G. F. Hrusa
1989-5-7
6089
Colusa
North Coast Ranges; N side of Little Stony Creek, approx. 3 miles upstream from junction with Stonyford-Lodoga Rd.
Comment
JEPS87724
Apiastrum angustifolium
Vernon H. Oswald and Lowell Ahart
1994-3-23
6017
Colusa
just w of bridge over Sullivan Creek (s of Stonyford, Goat Mountain Road); Goat Mountain Road
505
Comment
CHSC79441
Apocynum cannabinum
B. Castro; L. P. Janeway
2000-5-1
1105 a
Colusa
Vicinity of Sites, Pence Mtn, and Grapevine Creek.
335
Comment
CHSC86964
Apocynum cannabinum
B. Castro; Michelle Cedarborg
2003-5-1
1426
Colusa
Vicinity of Logan Ridge, Sites Peak and Lurline Creek. By creek not far downstream of pond at creek headwaters
204
Comment
JEPS95645
Apocynum cannabinum
Vernon H. Oswald and L. Ahart
1999-6-18
9773
Colusa
Fouts Springs Rd. (M10) 9.9 mi west of Stonyford-Elk Creek Rd.: T17N R7W Sect. 7, 2050 ft, chaparral, serpentine substrate
624
Comment
POM129769
Apocynum cannabinum
Roxana Stinchfield
1916-7-8
s.n.
Colusa
Stinchfield Ranch, along Sycamore Slough
Comment
JEPS82549
Arabis glabra var. glabra
L. R. Heckard
1983-7-27
6110
Colusa
ca. 1/4 mi. w. Summit Springs (s. side Snow Mt.); Snow Mt.
1500
Comment
JEPS75709
Aralia californica
Alice Q. Howard
1972-7-10
13
Colusa
Paradise Creek at crossing of trail between Fouts Camp and Box Springs; Snow Mt.
1371
Comment
UCD63730
Arceuthobium campylopodum
Craig D. Thomsen
2008-5-23
2739
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy 16 and Hwy 20. 0.75 mile south of Hwy 20 (south of Destanella Flat) and 2.5 miles west of Hwy 16.
520
Comment
UCD19963
Arceuthobium campylopodum
C. H. Lamoureux; R. Gankin
1956-3-16
1018
Colusa
2 miles west of junction of State Routes 16 and 20. 1 mile east of Lake County line.
Comment Read comments 1
UCD15652
Arctostaphylos canescens
Rachelle Raymond
1989-4-8
102
Colusa
Bear Valley.
1097
Comment
UCD50538
Arctostaphylos canescens
G. L. Webster
1989-5-6
7700
Colusa
Near border with Lake County, Pinus attenuata woods on crest of Walker Ridge, near Cold Springs Mountain.
Comment
UCD66956
Arctostaphylos canescens subsp. sonomensis
Ellen Dean; Davis Botanical Society
2008-5-31
5000
Colusa
west of I-5 at Maxwell, east slope of Goat Mountain, along Goat Mountain Road.
822
Comment
CDA16131
Arctostaphylos manzanita
G. F. Hrusa
1999-2-13
14915
Colusa
North Coast Ranges; along Little Stony Creek, on road to Cedar Camp and Goat Mtn.
0
Comment
SD53207
Arctostaphylos manzanita
Darley F. Howe
1962-5-19
3285
Colusa
11 miles west of Williams on Highway 20.
149
Comment
CHSC92603
Arctostaphylos manzanita subsp. elegans
D. Isle
2005-7-14
1153
Colusa
Mendocino National Forest--North Coast Ranges. Middle Fork Stony Creek Watershed. In saddle of Board Camp Ridge on 17N10, SE of the Homesites about 1 mile. SE of Boardcamp gate at the junction with OHV Trail 06 and road 17N10.
1633
Comment
CAS-BOT-BC24423
Arctostaphylos manzanita subsp. manzanita
C. Hart Merriam
1919-9-9
s.n.
Colusa
Hershey, se. Colusa Co.
Comment
CHSC86877
Arctostaphylos manzanita subsp. manzanita
B. Castro
2003-3-28
1407
Colusa
Vicinity of Sites, hills N of the Sites-Lodoga Rd, and Stone Corral Creek.
170
Comment
UCR206665
Arctostaphylos manzanita subsp. manzanita
George K. Helmkamp, E. A. Helmkamp
2009-3-17
14395
Colusa
Inner North Coast Ranges Foothills, along CA-16 and Bear Creek, 7.0 miles south of the junction with CA-20; just north of the Yolo County line
194
Comment
SEINET7258424
Arctostaphylos manzanita subsp. roofii
R. R. Halse
2014-3-25
9034
Colusa
Along the Bear Valley Road ca. 1.8 mi WNW of its junction with State Hwy. 20.
378
Comment
SEINET7760675
Arctostaphylos manzanita subsp. roofii
Richard R. Halse
2014-3-25
9034
Colusa
Along the Bear Valley Road ca. 1.8 mi WNW of its junction with State Hwy. 20.
378
Comment
SFV8791
Arctostaphylos viscida
S. C. Schank
1960-4-10
51
Colusa
Above Cache Creek, 2 miles northwest of junction of Highway 16 and Highway 20 on road to Bear Valley.
Comment
UCD15253
Arctostaphylos viscida
R. Robichaux
1975-4-20
36
Colusa
six miles northwest of Highway 20 on the north side of Walker Ridge road.
Comment
UCD66999
Arctostaphylos viscida
Craig D. Thomsen; Gordon Harrington
2008-7-6
2781 -a
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western side of ranch along trail that follows the border of Lake and Colusa counties. South of Dunsfield Flat, along ridge trail above Cache Creek Canyon.
640
Comment
HSC62937
Arctostaphylos viscida
Michael Dalke
1979-4-14
45 .5
Colusa
1067
Comment
CHSC62844
Arctostaphylos viscida subsp. pulchella
Vernon H. Oswald
1994-3-23
6011
Colusa
Frenzel Creek Research Natural Area on the S side of Little Stony Creek, in the section on the E side of Frenzel Creek, S of Stonyford.
518
Comment
JEPS87758
Arctostaphylos viscida subsp. pulchella
Vernon H. Oswald and Lowell Ahart
1994-3-23
6011
Colusa
s side Little Stony Creek (in section on e side of Frenzel Creek, s of Stonyford); Frenzel Creek Research Natural Area
518
Comment
CAS-BOT-BC44549
Arctostaphylos viscida subsp. viscida
Eric B. Peterson; Thomas Ward; Matt Foruria
1995-4-1
47
Colusa
Walker Ridge Rd., 0.9 mile NE of junction with Indian Valley Access Rd., adjacent to Freshwater Branch Creek.
810
Comment
RSA589937
Arctostaphylos viscida subsp. viscida
Michael A. Vincent, Robert Rhode, Karl Vincent
1996-3-30
7301
Colusa
Along Brim Rd., 1.9 mi. W juct . Bear Valley Rd.
Comment
SBBG25408
Arctostaphylos viscida subsp. viscida
R. Gankin
1958-4-26
292
Colusa
Leesville-Bartlett Springs Rd, ca. 2 mi W of jct of this rd and Leesville-Wilbur Springs Rd, near Colusa-Lake County line
Comment
POM367485
Arctostaphylos viscida subsp. viscida
Phyllis Krieg
1979-4-14
s.n.
Colusa
[Unspecified]
1067
Comment
UCD95197
Argemone munita
K. Esau
1934-5-5
s.n.
Colusa
above Williams, Tahoe-Ukiah Highway.
Comment
CDA24525
Argemone munita subsp. rotundata
R. Lawley
1960-5-22
Colusa
Stonyford.
0
Comment
POM257214
Argemone munita subsp. rotundata
Lincoln Constance
1939-5-14
2490
Colusa
1 mile east of Mill Creek Ranger Station
549
Comment
CAS-BOT-BC400398
Aristolochia californica
Roxana Stinchfield
1916-7-8
377
Colusa
Sycamore Slough, Stinchfield Ranch
Comment
POM165698
Aristolochia californica
Roxana S. Ferris
1917-4-15
s.n.
Colusa
Sycamore Slough
Comment
UCD146598
Arnica discoidea
G. F. Hrusa
1998-6-19
14615
Colusa
North Coast Ranges. USFS Pacific Ridge Road, 4-5 km northwest of intersecion with Colus County Goat Mountain Road.
1200
Comment
JEPS15569
Arnica longifolia
G. Thomas Robbins with L. R. Heckard
1956-7-25
3712
Colusa
Snow Mt. East (s flank) Dark Hollow Creek, Snow Mt. East
1981
Comment
CHSC100273
Arrhenatherum elatius
David Isle
1990-6-6
1519
Colusa
Mendocino National Forest - North Coast Ranges. Middle Fork Stony Creek Watershed. Lower Letts Valley in moist meadow. MDMB.
1243
Comment
CHSC112642
Artemisia douglasiana
Lowell Ahart
2013-10-1
19098
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
CHSC84932
Artemisia douglasiana
Lowell Ahart
2003-10-23
10660
Colusa
Along Squaw Creek, just south of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
IRVC29848
Artemisia douglasiana
Mark A. Elvin, David Isle, Mark S. Brunell
2006-8-3
4994
Colusa
Mendocino Nat. Forest; E face of Snow Mtn., Stony Creek along M10. Southern Northern Inner Coast Ranges
610
Comment
JEPS104400
Artemisia douglasiana
Lowell Ahart
2003-10-23
10660
Colusa
Along Squaw Creek, just south of East Park Reservoir, ca 1/8 mi nw of Sites Lodoga Rd, ca 1 mi n of Lodoga, ca 21 mi w of Maxwell.
368
Comment
JEPS15567
Asclepias fascicularis
G. Thomas Robbins with L. R. Heckard
1956-7-25
3714
Colusa
above Dark Hollow Creek (tributary of Middle Fork Stony Creek) (s flank of Snow Mt. East, at lower edge of cirque between Snow Mt. East and Snow Mt. West); Snow Mt. East
1981
Comment
UCD82491
Asclepias fascicularis
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5677
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
843
Comment
HSC72214
Asclepias solanoana
Thomas W. Nelson, Jane P. Nelson
1980-6-24
5876
Colusa
Along road to Snow Mtn. trail head at Summit Springs
1585
Comment
JEPS95651
Asclepias speciosa
Vernon H. Oswald and L. Ahart
1999-6-18
9774
Colusa
Fouts Springs Rd. (M10) 9.9 mi west of Stonyford-Elk Creek Rd.: T17N R7W Sect. 7, 2050 ft, chaparral, serpentine substrate. From a colony growing along the edge of a roadside seep.
624
Comment
JEPS80758
Asclepias speciosa
L. R. Heckard and J. C. Hickman
1981-7-29
5725
Colusa
above Summit Springs (s side of mountain); Snow Mt., Colusa-Lake County Boundary
1554
Comment
UC1049537
Astragalus breweri
Rimo Bacigalupi
1950-4-16
3112
Colusa
four mi s Ladoga (6 mi nnw of Leesville, in Indian Valley (not the one in Lake County) along Little Indian Creek, eastern base of Inner North Coast Ranges); eastern base Inner North Coast Ranges, Little Indian Creek
396
Comment
CHSC91565
Astragalus clevelandii
D. Isle
1995-7-12
393
Colusa
Mendocino National Forest--North Coast Ranges. Bear Creek Watershed. Adjacent to BLM parcel 281-C.
585
Comment
CAS-BOT-BC366914
Astragalus gambelianus
Richard R. Halse
2013-3-27
8765
Colusa
Along State Hwy. 20 just east of the Colusa/Lake County Line, ca. 14.6 miles E of the junction of State Hwys. 20 and 53
558
Comment
CDA11399
Astragalus gambelianus
G. F. Hrusa, K. van Katwyk
1995-4-22
12119
Colusa
Inner North Coast Ranges; Walker Ridge Road, approx. 6 m. S of intersection with Bartlett Springs Rd.
Comment
CHSC101594
Astragalus gambelianus
David W. Isle
2002-4-18
1659
Colusa
Mendocino National Forest; N of Fouts Springs, N of Chlorinator Building and road to Bathhouse Trail (Snow Mtn). MDB and M.
524
Comment
HSC72171
Astragalus gambelianus
Thomas W. Nelson, Jane P. Nelson
1978-4-2
9548
Colusa
Bear Valley Rd., 1.3 mi. from its junction with Hwy. 20
366
Comment
UCD163330
Astragalus gambelianus
Craig D. Thomsen
2009-5-3
2799
Colusa
Walker Ridge. Vicinity of Walker Ridge Rd., 0.5 miles north of Hwy 20.
Comment
CHSC112270
Astragalus rattanii var. jepsonianus
Lowell Ahart; John Dittes, Josephine Guardino
2013-4-26
18634
Colusa
Inner North Coast Range. North side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
CHSC29256
Astragalus rattanii var. jepsonianus
John Steiner
1977-4-16
46
Colusa
Growing in an open field, ca. 0.5 km w of jct. of Hwys 20 and 16, s side of Bear Creek, ca. 30 km sw of Williams.
322
Comment
RSA475188
Astragalus rattanii var. jepsonianus
Aaron Liston
1988-3-16
701 -1
Colusa
0.45 miles from jct. Hwy 20 on Walker Ridge road.
600
Comment
UCD105314
Astragalus rattanii var. jepsonianus
J. M. Tucker; Dorothy Dreyfus
1967-4-29
4034
Colusa
Bear Valley, 9 miles north of junction of Bear Valley Road with State Highway 20.
403
Comment
UCD163326
Astragalus rattanii var. jepsonianus
Craig D. Thomsen
2009-5-3
2791
Colusa
Walker Ridge. Vicinity of Walker Ridge Rd., 0.25 miles north of Hwy 20.
Comment
UCD57293
Astragalus rattanii var. jepsonianus
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3664
Colusa
BLM Payne Ranch. Near origin of Craig Canyon. West of Hwy. 16, ca. 2 road miles south of junction of Hwy. 20 and Hwy. 16.
359
Comment
UCD63032
Astragalus rattanii var. jepsonianus
Ellen Dean; C. Thomsen, N. Voegtly, J. Alderson, G. Harrington
2008-3-30
4684
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Along west side of Bear Creek, just north of Eula Canyon.
312
Comment
UCR212339
Astragalus rattanii var. jepsonianus
Craig D. Thomsen
2002-2-27
2576
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, south side of Hwy 20, c. 0.25 mi west of Hwy 20/16 intersection, milepost 3.00
310
Comment
UCR212345
Astragalus rattanii var. jepsonianus
Craig D. Thomsen
2000-4-12
2144
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mi west of Hwy 20/16 intersection, milepost 3.00
310
Comment
RSA475227
Astragalus rattanii var. jepsonianus
Aaron Liston
1988-3-16
699 -1
Colusa
3.3 miles N of Stonyford on Elk Creek Road.
300
Comment Read comments Aug 8 2014
JEPS59519
Atriplex argentea var. mohavensis
W. L. Jepson
1929-9-26
15274
Colusa
Maxwell
25
Comment
RSA670513
Atriplex cordulata
Stan C. Spencer
2002-8-8
unnumbered
Colusa
ca. 3-6 miles E of Colusa, along California Highway 20.
Comment
UC1609126
Atriplex coronata
Vernon H. Oswald, Mike Wolder and Joe Silveira
1993-7-26
5701
Colusa
ca 5 mi s Colusa (ca 1 mi n of Ware Rd., ca 1 mi w of Ohm Rd., Tract 18 on the s side of the Colusa National Wildlife Refuge); s side Colusa National Wildlife Refuge, s of Colusa
15
Comment
CHSC60279
Atriplex depressa
K. R. Stern
1980-6-30
6654
Colusa
Vernal Pool, south central border area of Colusa National Wildlife Refuge.
45
Comment
CHSC79494
Atriplex fruticulosa
L. P. Janeway; B. Castro
2000-3-23
6637 A
Colusa
Vicinity of Funks Creek and Glenn-Colusa Canal.
47
Comment
CHSC80183
Atriplex fruticulosa
B. Castro; G. Kuenster
2000-7-19
1208
Colusa
Vicinity of Maxwell, Funks Creek, and the Glenn-Colusa canal, on low terrace beside S edge of shallow intermittent stream channel draining eastward out of the hills east of Golden Gate.
42
Comment
UCD97410
Atriplex fruticulosa
P. B. Kennedy
30-31 May 1922
s.n.
Colusa
Colusa County.
Comment
POM164903
Atriplex joaquinana
Roxana S. Ferris
1917-4-12
505
Colusa
4 miles east of Williams.
Comment
UCD97461
Atriplex joaquinana
A. A. Heller
1916-6-9
12394
Colusa
near Williams.
Comment
UCD163663
Atriplex prostrata
Craig Thomsen
1998-6-10
1961
Colusa
Bear Valley. About 7 miles north of Hwy 20.
Comment
JEPS108755
Atriplex rosea
Lowell Ahart
2006-9-26
13346
Colusa
Between the deep ditch and the Delevan National Wildlife Refuge, north side of Maxwell Road, about 3 miles west of Colusa Princeton Road, about 5 1/2 miles east of Maxwell
24
Comment
UC217003
Atriplex serenana var. serenana
H. M. Hall
1920-7-12
11011
Colusa
5 mi e Maxwell; e of Maxwell
Comment
CHSC94733
Atriplex triangularis
Lowell Ahart
2006-9-26
13347
Colusa
Along the deep ditch, south side of the Delevan National Wildlife Refuge, north side of Maxwell Road, about 3 miles west of Colusa Princeton Road, about 5 1/2 miles east of Maxwell.
24
Comment
UC53770
Avena barbata
J. Burtt Davy
May 1898
4294
Colusa
near Princeton
Comment
SEINET3919645
Avena barbata
Patricia Shesgreen
1978-4-22
33
Colusa
Wilbur Springs Quad. Bear Valley Road, 1.5 miles from its junction with State Route 20.; 0
411
Comment
CAS-BOT-BC98202
Baccharis salicifolia
Alice Eastwood
1921-4-11
10231
Colusa
Colusa
Comment
SEINET7239582
Baccharis salicifolia
R. R. Halse
2007-3-25
7134
Colusa
Along State Hwy. 20, ca. 7.8 miles NE of its junction with State Hwy. 16 at base of Salt Canyon
100
Comment
OBI54577
Balsamorhiza macrolepis var. macrolepis
B. Castro, B. Corbin, K Earll, L. Hanson, D. Isle, L. P. Janeway
1995-4-28
564
Colusa
Ca. 18 air mi due W of Williams, on Walker ridge just W of Walker Ridge rd., ca 0.5 mi S of jctn Bartlett Springs rd and Walker ridge Rd. (Site is a few hundred feet E of Lake co line.)
716
Comment
CDA2974
Bassia hyssopifolia
Margaret Bellue
Oct 1932
Colusa
Near Williams.
0
Comment
UCD97560
Bassia hyssopifolia
P. B. Kennedy
1928-9-15
s.n.
Colusa
Cortena.
Comment
UC1613495
Berberis aquifolium var. dictyota
Charles M. Belshaw
1937-4-25
2838
Colusa
vicinity of Cook's Spring (Inner North Coast Range, Devil's Ridge); Inner North Coast Range, Devil's Ridge
Comment
RSA518720
Bergia texana
Barbara Ertter, Elizabeth Neese, Laura Fjuii, Dawn Espindola
1989-10-21
8869
Colusa
SE end of East Park Reservoir N of Lodoga.
366
Comment
UCR71523
Bergia texana
Barbara Ertter, Et al.
1989-10-21
8869
Colusa
SE end of East Park Reservoir north of Lodoga
366
Comment
UC1532346
Berula incisa
Vernon Oswald
1986-6-30
2171
Colusa
Fouts Spring Road (M10) at Candy Bucket Spring, 6.0 miles W of Road 306, 0.4 mi E of junction John Smith Road (M5).
Comment
CHSC94746
Bidens frondosa
Lowell Ahart
2006-9-26
13344
Colusa
Along the deep ditch, south side of the Delevan National Wildlife Refuge, north side of Maxwell Road, about 3 miles west of Colusa Princeton Road, about 5 1/2 miles east of Maxwell.
Comment
RSA724819
Bidens frondosa
L. Ahart
2006-9-26
13344
Colusa
South side of the Delevan National Wildlife Refuge, north side of Maxwell Road, about 3 miles west of Colusa Princeton Road, about 5.5 miles east of Maxwell.
24
Comment
CAS-BOT-BC100260
Blennosperma nanum var. nanum
Roxana S. Ferris
1917-4-12
498
Colusa
4 miles East of Williams
Comment
JEPS86635
Boechera breweri subsp. breweri
L. R. Heckard with P. C. Silva, R. L. and M. Moe
1988-6-18
6687
Colusa
sw flank Snow Mtn. (Summit, East Peak); , East Peak
2150
Comment
JEPS80391
Boechera repanda
L. R. Heckard, and J. Hickman
1981-6-22
5624
Colusa
Dark Hollow trail Snow Mt.
1965
Comment
CHSC96359
Boehmeria cylindrica
D. Koenig; L. Bateman
2006-10-6
Colusa
Sacramento Valley. By a slough along the west side of the Sacramento River, about 0.5 mi south-southeast of Stegeman.
21
Comment
CHSC107167
Bolboschoenus maritimus subsp. paludosus
L. P. Janeway; B. Castro
2011-4-27
10245
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 1.8 km southeast of Funks Reservoir and 0.2 km northeast of Tehama-Colusa Canal. Large +- alkaline vernal pool/marsh; mucky clay soil. In 6-10 cm of standing water where overgrown dirt roadbed passed through the marsh.
49
Comment
UCD140021
Bolboschoenus maritimus subsp. paludosus
K. Esau; D. Hartmann
1941-7-17
s.n.
Colusa
near Williams.
Comment
UCD140020
Bolboschoenus maritimus subsp. paludosus
C. F. Dunshee
1922-7-28
24
Colusa
Cortina.
Comment
CAS-BOT-BC418408
Boykinia occidentalis
Volney Rattan
1877-6-26
s.n.
Colusa
Sulphur Creek
Comment
UCR206384
Brassica
George K. Helmkamp, E. A. Helmkamp
2009-5-20
14752
Colusa
Inner North Coast Ranges, along CA-16, 1.8 miles north of the Yolo County line
271
Comment
CAS-BOT-BC127848
Brickellia grandiflora
Mark A. Elvin; Mark S. Brunell; David Isle
2006-8-3
5033
Colusa
Spring Trail; 1.4km W of Snow Mtn West summit; 800m N of Cedar Camp
1989
Comment
IRVC29685
Brickellia grandiflora
Mark A. Elvin, Mark S. Brunell, David Isle
2006-8-3
5033
Colusa
Snow Mtn; Summit Spring Trail; 1.4km W of Snow Mtn West summit; 800m N of Cedar Camp. Southern Northern Inner Coast Ranges
1989
Comment
SEINET7075565
Brodiaea elegans
A. G. Vestal
1955-4-5
3684
Colusa
In mountains [Cortina Ridge] west of Williams on Route 20 at Salt Canyon. 39? deg. 6' 22" North Latitude, -122? deg. 19' 15" West Longitude. UTM Zone 10, 558719mE, 4328566mN. (NAD 27)]. [Coordinate Datum: WGS84/NAD83].
Comment
UCR206363
Brodiaea elegans
George K. Helmkamp, E. A. Helmkamp
2009-5-20
14747
Colusa
Inner North Coast Ranges, along CA-16 at 'Cowboy Camp' 1.0 mile south of the junction with CA-20, adjacent to Bear Creek
332
Comment
JEPS7632
Brodiaea elegans subsp. elegans
W. L. Jepson
1920-5-23
8961
Colusa
foothills near Mountain House (sw Colusa Co.); Venado
Comment
JEPS81271
Brodiaea elegans subsp. elegans
L. R. Heckard and J. C. Hickman
1982-7-5
5879
Colusa
slope below (s of) area Summit Springs (s side of Snow Mountain); s side Snow Mountain
1500
Comment
POM169614
Brodiaea elegans subsp. elegans
Roxana Stinchfield
1916-6-18
300
Colusa
Near College City.
Comment
UCD72482
Brodiaea elegans subsp. elegans
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3816
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. West side of Bear Creek, along trail that beings approximately across from BLM parking lot, located at south end of bridge.
256
Comment
UCD37189
Bromus arenarius
Beecher Crampton
1958-5-19
4802
Colusa
Colusa County, 5.8 miles south of Lodoga.
Comment
CAS-BOT-BC149477
Bromus carinatus var. carinatus
F. P. Cronemiller
1924-5-12
877
Colusa
Below Lower Letts Valley.
1219
Comment
UCD57551
Bromus diandrus
Cindy Yip; with Plant Biology 102
2007-4-29
3
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Meadow on the west side of State Route 16, ca. 2 road miles south of intersection with State Route 20.
304
Comment
UCD83625
Bromus diandrus
Adam Clause; with PLB 102 class
2010-5-2
4
Colusa
Walker Ridge. Eaton Springs. 20 meters south of the main road, on the flat valley floor.
709
Comment
RSA714303
Bromus hordeaceus
Daisie Huang
2006-4-16
6041602
Colusa
45 S of Grimes. Roadside below Sacramento River pumping station.
9
Comment
CHSC100264
Bromus laevipes
D. Isle
1988-4-13
1512
Colusa
Mendocino National Forest - North Coast Ranges. Middle Fork Stony Creek Watershed. Mellow-D Ranch meadow just north of 1st bad erosion channel in area burned during 1987 Fouts Fire.
731
Comment
UCD57485
Bromus laevipes
Helen K. Sharsmith
1953-6-19
4266
Colusa
Inner north coast ranges. Mendocino National Forest. Red Bridge Camp. Near confluence of North and Middle forks of Stoney Creek.
548
Comment
UCD58884
Bromus laevipes
Helen K. Sharsmith
1953-6-19
4266
Colusa
Inner North Coast Ranges. Mendocino National Forest. Red Bridge Camp. Near confluence of North and Middle forks of Stoney Creek.
548
Comment
UCD72529
Bromus laevipes
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3820
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. West side of Bear Creek along trail that begins approximately opposite the BLM parking lot near south end of bridge. Approx. 0.75 mile along trail.
286
Comment
CHSC112028
Bromus laevipes
David Isle; Doug Johnson
1988-5-11
2089
Colusa
Mendocino National Forest. Little Stony Road (Goat Mtn Rd).
426
Comment
JEPS80793
Bromus orcuttianus
L. R. Heckard and J. C. Hickman
1981-7-30
5763
Colusa
se Snow Mountain, going down Trout Creek Trout Creek; Snow Mountain, Trout Creek
1569
Comment
CHSC94853
Bromus pseudolaevipes
Lowell Ahart
2006-6-11
12670
Colusa
On the east side of an off road trail (Trail 30), about 100 yards south of Fouts Road, about 5 miles (by road) west of Stonyford.
613
Comment
SEINET4404370
Bromus rubens
R. R. Halse
2002-3-21
6130
Colusa
Williams; by junction on 5th Street and B Street;
24
Comment
CHSC94534
Bromus tectorum
Lowell Ahart
2006-8-22
13216
Colusa
South side of Stony Creek, about 100 yards west of the bridge across Stony Creek, just north of Stonyford.
349
Comment
UCD59764
Bromus tectorum
Beecher Crampton
1958-5-19
4808
Colusa
West of Lodoga.
Comment
UCD67035
Bromus tectorum
Ellen Dean; Davis Botanical Society
2008-5-31
5016
Colusa
west of I-5 at Maxwell, Goat Mountain, ridge below summit off of Goat Mountain Road.
1734
Comment
UCD129652
Cacaliopsis nardosmia
J. M. Tucker
1959-5-30
3519
Colusa
Trough Spring, at northeast end of Trough Spring Ridge, ca. 5.75 miles (airline) southwest of Stonyford.
975
Comment
JEPS120964
Calandrinia breweri
Lowell Ahart
2013-5-1
18659
Colusa
On the N side of Hwy 20, just E of the Lake County Line, 12.2 air miles ENE of the town of Clear Lake, 17.1 air miles W of Williams.
Comment
CAS-BOT-BC438309
Calandrinia ciliata
Roxana S. Ferris
1917-4-12
535
Colusa
4 miles east of Williams
Comment
JEPS52594
Calandrinia ciliata
Ruth Johnson
1915-4-6
Colusa
College City
Comment
RSA783301
Calandrinia ciliata
R. R. Halse
2010-3-20
7825
Colusa
Along State Hwy 45 ca. 10 miles N of Colusa (junction of State Hwys 45 & 20).
22
Comment
UCD163689
Calandrinia ciliata
Craig Thomsen
1999-4-15
1991
Colusa
Bear Valley. About 5 miles north of Hwy 20, west of Bear Valley Rd.
Comment
UCD100196
Calandrinia ciliata
Mark Hershkovitz
1991-5-3
s.n.
Colusa
Walker Ridge, along Walker Ridge Rd. nr. Turn-off to Bear Valley on north end; serpentine.
Comment
UCD103570
California macrophylla
Craig Thomsen
2011-3-28
s.n.
Colusa
BLM Bear Creek (formerly Payne) Ranch. W of intersection of Hwys 16 and 20; E side of 'Serpentine Creek.' Drainage runs north from Bear Creek Ranch flowing under pull out along Hwy 20.
335
Comment
UCD57817
California macrophylla
Gordon Harrington
2007-3-22
1
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central part of ranch.
472
Comment
UCR198059
Calochortus amabilis
E. Jacqueline Garcia
1986-4-13
s.n.
Colusa
Bear Valley, 2.6 mi west of the junction of Bear Valley Road and Bartlett Springs Road, on Bartlett Springs Road
664
Comment
CAS-BOT-BC492117
Calochortus amabilis
F. P. Cronemiller
1924-5-10
875
Colusa
Mill Creek Ranger Station
609
Comment
CAS-BOT-BC492123
Calochortus amabilis
A. A. Heller
1940-5-6
15577
Colusa
2 miles west of Junction with Highway #16, on State Highway #20
Comment
UCD63617
Calochortus amabilis
Craig D. Thomsen
1999-5-12
2030
Colusa
BLM Payne Ranch. Approximately 0.5 mile southwest of intersection of Hwy 16 and Hwy 20. On large knoll.
Comment
RSA601304
Calochortus luteus
Jens Clausen
1935-5-20
1011
Colusa
18 mi W of Williams on Bartlett Springs Road. Past the Stonyford road.
Comment
UCD139535
Calochortus luteus
Grady L. Webster
1977-5-15
7679
Colusa
Bear Creek, ca. 0.5 mile west of junction of Wilbur Springs Road and Rtw. 20.
350
Comment
JEPS120967
Calochortus splendens
Lowell Ahart
2013-5-1
18683
Colusa
On the N of the wash and N side of Hwy 20, just E of the Lake County Line, 12.2 air miles ENE of the town of Clear Lake, 17.1 air miles W of Williams.
Comment
UC616859
Calochortus splendens
L. Constance
1939-5-14
2491
Colusa
2.5 mi e Bonnie View (above Middle Fork of Stony Creek, e base of Snow Mountain); Inner North Coast Ranges, Snow Mountain
518
Comment
UC1051690
Calochortus tolmiei
Helen K. Sharsmith
1953-6-19
4289
Colusa
Old Mill Campground, Trough Springs Ridge Inner North Coast Ranges, Mendocino National Forest
1219
Comment
UCD14317
Calochortus uniflorus
H. Bebensee
1984-4-21
9
Colusa
9.8 miles north of Highway 20 along the east side of Bear Valley Road.
Comment
UCD63912
Calycadenia fremontii
Craig D. Thomsen
2000-6-23
2401
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection (between Colusa Co. mileposts 2.17 and 2.25).
342
Comment
RSA789275
Calycadenia micrantha
R. L. Carr
1994-9-23
2656
Colusa
Wilson Camp, southwest of Stoneyford, near the Colusa/Lake County line, ca. 3 air miles southeast of Goat Mountain.
1400
Comment
CAS-BOT-BC270758
Calycadenia pauciflora
K. C.
1884-7-1
s.n.
Colusa
Mountain House
Comment
RSA255585
Calycadenia pauciflora
Gerald D. Carr
1972-6-14
703
Colusa
At the Lake County line on Hwy. 20
Comment
UC1299279
Calycadenia pauciflora
Freed W. Hoffman
1947-6-20
1619
Colusa
road from Stonyford to Fouts Springs Paskenta; North Coast Ranges
502
Comment
CAS-BOT-BC270750
Calycadenia pauciflora
Gerald D. Carr
1971-7-29
608
Colusa
1 mile S of Stoneyford on road to Lodoga
365
Comment
RSA255514
Calycadenia pauciflora
Gerald D. Carr
1971-9-15
658
Colusa
6 miles north of Yolo County Line on Hwy. 16
Comment
RSA255608
Calycadenia pauciflora
Gerald D. Carr
1971-7-29
605
Colusa
1.7 miles west of Lodoga on road to Stoneyford
412
Comment
RSA788193
Calycadenia pauciflora
R. L. Carr
1978-8-20
2152
Colusa
Colusa-Lake Co line on Hwy 20.
Comment
SEINET10798196
Calycadenia pauciflora
Katherine L. Morris, Melvin L. Conrad; David B. Dunn
1973-6-6
Morris 383
Colusa
Chaparral woodland and sparse oaks; on Hwy. 20, 0.3 mi. E of Lake County line.
Comment
UC1876227
Calycadenia pauciflora
Gerald D. Carr
1972-7-29
717
Colusa
8.7 mi N of Hwy 20 on Bear Valley Rd., along banks of Bear Cr.
Comment
UC1876632
Calycadenia pauciflora
Gerald D. Carr
1971-9-15
658
Colusa
6.0 mi N of Yolo Co. line on Hwy 16.
Comment
UC1971709
Calycadenia pauciflora
1978-8-20
2152
Colusa
Colusa-Lake Co. line on Hwy 20, E of Clearlake Oaks (=GDC 703)
570
Comment
UC1971710
Calycadenia pauciflora
1978-8-20
2155
Colusa
Brim Road (to Bartlett Springs), 1.5 mi W of jct with Bear Valley Road, ca. 3.6 mi SW of Leesville (=GDC 652)
482
Comment
UCD129837
Calycadenia pauciflora
Gerald D. Carr
1972-7-29
720
Colusa
0.3 mile east of Lake County line on Bartlett Springs Road.
Comment
UCD129839
Calycadenia pauciflora
Gerald D. Carr
1972-7-29
722
Colusa
1.8 miles east of Walker Ridge Road on Deadshot Road.
731
Comment
UCD129840
Calycadenia pauciflora
Gerald D. Carr
1972-8-2
723
Colusa
0.6 miles west of Leesville-Lodoga Road on road to Cook's Springs.
Comment
UCSB6412
Calycadenia pauciflora
Keator, Glenn
1958-6-16
Colusa
Along road from Lower Lake to Sacramento Valley just east of Lake-Colusa county line
Comment
RSA0059895
Calystegia collina subsp. collina
Gloria R. Campbell
1948-6-18
653
Colusa
2 miles west of junction of Highways 16 and 20.
Comment
UCSB4973
Calystegia occidentalis
Keator, Glenn
1958-6-16
Colusa
Foothills west of Bartlett Springs
Comment
JEPS81301
Calystegia occidentalis subsp. occidentalis
L. R. Heckard and J. C. Hickman
1982-7-5
5915
Colusa
slope below Summit Springs, S side Snow Mountain
Comment
UCD81718
Calystegia occidentalis subsp. occidentalis
Ellen Dean; K. Mawdsley,G. Harrington,R. Wilmarth,B. Rice,E. Salvia
2009-5-27
5723
Colusa
Walker Ridge. Along Walker Ridge Road. Til Jones Spring area on W side of road, ca. 6.5 road mi N of junction with Hwy 20. W side of road.
833
Comment
UCD164158
Calystegia subacaulis
Craig Thomsen
2000-4-28
2266
Colusa
Between Bear Creek and Bear Valley Rd. about 0.3 mile north of junction with Hwy 20.
Comment
UCD138336
Camassia leichtlinii subsp. suksdorfii
J. M. Tucker; L. K. Mann
1959-5-30
3531
Colusa
on small lake in Mill Valley, around 1/4 mile northwest of Lower Letts Valley, and around 4 miles, airline, north of Goat Mountain Lookout.
1219
Comment
CHSC100287
Camassia quamash
David Isle
1990-6-6
1517
Colusa
Mendocino National Forest - North Coast Ranges Middle Fork Stony Creek Watershed. East end Upper Summit Valley 'lake' edge, MDMB (South of Road 17N10).
1694
Comment
HSC45719
Camissonia contorta
Sheila Logan
1978-4-22
27
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
POM271975
Camissonia graciliflora
Lyman Benson
1935-3-27
6328
Colusa
8 miles E of Lake County line, inner N coast mt. range, Sacramento River watershed
305
Comment
CDA15476
Camissoniopsis hirtella
G. F. Hrusa, WTD
1998-6-19
14613
Colusa
North Coast Ranges; Above upper Little Stony Creek. Goat Mtn. Rd. ~ 1.5 km. W of of campground.
Comment
JEPS94220
Camissoniopsis hirtella
Vernon Oswald and Lowell Ahart
1998-5-7
9004
Colusa
Bartlett Springs Road 2.1 mi w of Bear Valley Road (0.8 mi e of Sawtelle Valley and Grapevine Flat Roads); Bartlett Springs Road
524
Comment
UCD37191
Camissoniopsis hirtella
Beecher Crampton
1958-5-19
4807
Colusa
4-8 miles south of Lodoga, Little Stony Creek Canyon.
Comment
CHSC112316
Campanula griffinii
Lowell Ahart
2013-5-1
18690
Colusa
Inner North Coast Range. Near a small drainage, north of the wash and State Highway 20, just east of Lake County Line, 12.2 mile (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
UCD165932
Campanula griffinii
Ellen Dean; with Tom Starbuck
2016-4-24
8843
Colusa
BLM Bear Creek Ranch (formerly Payne Ranch). Lands to the southwest of the intersection of Highway 16 and Highway 20. On north-facing slope of knoll that is just south of corral area (corral at junction of Highways 16 and 20).
393
Comment
JEPS80789
Campanula prenanthoides
L. R. Heckard and J. C. Hickman
1981-7-30
5762
Colusa
se side Snow Mt.; Trout Creek
1569
Comment
UCR238927
Capsella bursa-pastoris
George K. Helmkamp, E. A. Helmkamp
2012-2-9
18532
Colusa
Sacramento Valley, River Road, 7.1 miles north of Colusa; east side of Sacramento River
18
Comment
UCR200671
Cardaria draba
Craig D. Thomsen
2008-4-7
2724
Colusa
BLM Payne Ranch, southwest of intersection between Hwy 16 and Hwy 20, along entry road into Cowboy Camp from Hwy 16, 1 mile south of Hwy 20
Comment
CHSC112228
Carduus pycnocephalus subsp. pycnocephalus
Lowell Ahart
2013-5-1
18660
Colusa
On the sides of Bear Valley Road, about 2 1/2 miles (by road) northwest of the intersection of State Highway 20 and Bear Valley Road.
533
Comment
UC596489
Carex barbarae
R. F. Hoover
1938-4-23
3210
Colusa
Upper Sand Creek
Comment
UC767029
Carex barbarae
R. F. Hoover
1938-4-23
3210
Colusa
Upper Sand Creek
Comment
JEPS63533
Carex barbarae
W. L. Jepson
1934-7-28
14747
Colusa
Cortina Velly, hills SE of Colusa county
Comment
JEPS80868
Carex bolanderi
L. R. Heckard and J. C. Hickman
1981-7-31
5796
Colusa
Dark Hollow Creek, E side of Snow Mountain
1584
Comment
JEPS110407
Carex densa
Lowell Ahart
2006-8-22
13213
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
SEINET7556704
Carex densa
Lowell Ahart
2006-8-22
13213
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
CHSC92529
Carex feta
G. F. Hrusa; WTD
1998-6-19
14619
Colusa
Wet area on spring along Goat Mtn. Rd. below intersection with USFS Pacific Ridge Rd. (M5).
975
Comment
UC1563913
Carex fracta
Barbara Ertter
1989-7-1
8610
Colusa
road to Goat Mt. Lookout 1.7 mi s Rt. M-10 (Bear Creek-Fouts Spring Rd.) (at head of S Fk Stony Creek, ca. 12 air mi wsw of Stonyford); S. Fk. Stony Creek
1463
Comment
JEPS80866
Carex hoodii
L. R. Heckard and J. C. Hickman
1981-7-31
5778
Colusa
near Fouts Springs Overlook (e side of Snow Mt.); Snow Mt.
1798
Comment
CHSC76353
Carex luzulina
L. P. Janeway; B. Castro
1999-7-5
6498
Colusa
At Bear Wallow Spring; on north side of Lovelady Ridge about 0.5 mi northeast of Pacific Point.
1045
Comment
CHSC92669
Carex pachystachya
D. Isle
2005-9-14
1173
Colusa
Mendocino National Forest--North Coast Ranges. Middle Fork Stony Creek Watershed. Meadow west of Angel Spring, Snow Mountain Wilderness. 10S 0522348E 4358185N = Angel Springs.
Comment
UCR228283
Carex praegracilis
Ellen Dean, Gordon Harrington, Craig D. Thomsen, S. Harrison
2008-5-18
4947
Colusa
Payne Ranch, owned by BLM, lands to the southwest of the intersection of Hwys 20 and 16. Unnamed drainage south of Hwy 20 between Hwy 16 and Lynch Canyon that drains to Bear Creek by passing under Hwy 20
399
Comment
CAS-BOT-BC118348
Carex praegracilis
Roxana S. Ferris
1917-4-17
625
Colusa
Under trees, Sycamore Slough.
Comment
UCD140770
Carex praegracilis
Sam Olusuyi
1967-4-29
35
Colusa
9 miles north of junction of Wilbur Springs Road and State Highway 20, Bear Valley.
396
Comment
CHSC45069
Carex serratodens
Vernon Oswald
1984-5-2
1169
Colusa
Mendocino Nat. Forest, Fouts Spring Rd. (M10; 18N01) 5.9 mi w of Stonyford.
609
Comment
JEPS81282
Carex serratodens
L. R. Heckard and J. C. Hickman
1982-7-5
5893
Colusa
s. side Snow Mt. (Summit Springs, slope below (s. of) area); Summit Springs
1500
Comment
UCD67060
Carex serratodens
Craig D. Thomsen
2008-3-20
2716
Colusa
BLM Payne Ranch. Lands to the SW of Hwy 20/16 intersection. South side of Hwy 20, about 0.5 mile west of Hwy 16/20 intersection, at Colusa Co. milepost 2.63.
600
Comment
UCD67062
Carex serratodens
Craig D. Thomsen
2008-3-20
2714
Colusa
BLM Payne Ranch. Lands to the SW of Hwy 20/16 intersection. South side of Hwy 20, about 0.5 mile west of Hwy 16/20 intersection, at Colusa Co. milepost 2.63.
500
Comment
UCD82514
Carex serratodens
Craig Thomsen; G. Harrington
2009-5-12
2872
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
710
Comment
JEPS80885
Carex subfusca
L. R. Heckard and J. C. Hickman
1980-9-16
5451
Colusa
first meadow along trail from Frog Pond (e of West Peak); Snow Mt.
1981
Comment
CAS-BOT-BC116775
Carex subfusca
Peter H. Raven; R. Snow
1959-9-11
14422
Colusa
Along stream in wet soil, Bonnie View.
914
Comment
CDA15498
Carex tumulicola
G. F. Hrusa, T. D. Wilfred
1998-6-19
14635
Colusa
North Coast Ranges; Near Goat Mtn. summit, adj. to intersection at Lake Co. boundary. NW side of summit area.
Comment
CHSC82975
Carex tumulicola
Barbara Wilson; R. Brainerd, L. Janeway, D. Isle, M. Mooers
2002-6-28
10705
Colusa
High North Coast Ranges. Near Ellen Spring; north side of Road 24N02 0.2 km south of junction with Goat Mountain Road. At base of road fill.
1052
Comment
CHSC89621
Castilleja affinis subsp. affinis
Caroline Warren; Jenny Marr
1998-5-4
Colusa
Vicinity of Sites, Stone Corral Creek, and Antelope Valley.
106
Comment
JEPS74811
Castilleja affinis subsp. affinis
L. R. Heckard, T. I. Chuang and R. Bacigalupi
1975-5-7
4019
Colusa
4.5 mi se (by road) Leesville
Comment
UCD84431
Castilleja applegatei
Ellen Dean; C. Thomsen, G. Harrington, R. Wilmarth, R. Wenk
2010-6-2
6046
Colusa
Walker Ridge. Along Walker Ridge Road, N of turnoff to Indian Valley Reservoir but S of Til Jones Spring. Many old undeveloped roads here.
817
Comment
CHSC1709
Castilleja applegatei subsp. martinii
V. Holt
1946-4-18
Colusa
Cache Creek.
Comment Read comments Mar 2 2015
JEPS46009
Castilleja applegatei subsp. martinii
L. R. Heckard and G. T. Robbins
1957-7-25
814
Colusa
just e summit of Snow Mountain (West) (near Colusa-Lake County line); Snow Mountain (West)
2042
Comment
CHSC27516
Castilleja attenuata
Michael F. Henetz
1978-4-15
6
Colusa
Ca. 150 m s of Hwy 20, ca. .5 km w of Williams. S central border of Section 36.
322
Comment
HSC47735
Castilleja attenuata
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3940
Colusa
Along Bear Valley Rd., 2.5 mi. from junction with Hwy. 20
366
Comment
RSA0011988
Castilleja attenuata
George K. Helmkamp, E. A. Helmkamp
2011-4-1
17122
Colusa
Antelope Valley, along Maxwell-Sites Road, 1.8 miles southeast of Sites
77
Comment
UCD163675
Castilleja attenuata
Craig Thomsen
1999-4-15
1976
Colusa
Bear Valley. About 5 miles north of Hwy 20, west of Bear Valley Rd.
Comment
UCD56924
Castilleja attenuata
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3527
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. Near headwaters of Craig Canyon.
359
Comment
UCD64255
Castilleja attenuata
Craig D. Thomsen
2000-3-31
2056
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UCD83624
Castilleja attenuata
Adam Clause; with PLB 102 class
2010-5-2
3
Colusa
Walker Ridge. Eaton Springs.15 meters north of the main road, on the flat valley floor.
709
Comment
CHSC27537
Castilleja exserta
Greg C. Halcomb
1978-4-9
12
Colusa
5.1 mi w of Walker Ridge Rd., Hwy 20.
457
Comment
UC1053455
Castilleja exserta
Rimo Bacigalupi and Arthur Holmgren
1950-4-26
3165
Colusa
8 mi nw Maxwell (along road to Sites, in canyon between first hills on extreme w edge of the Sacramento Valley); Sacramento Valley
Comment
UCD40887
Castilleja exserta
R. Rhode
1984-4-21
s.n.
Colusa
10 miles north of intersections of highways 16 and 20 in Bear Valley.
426
Comment
CHSC59611
Castilleja exserta subsp. exserta
Carole Pauls
1975-4-20
5
Colusa
Bear Valley Road, 8.7 miles north of State Highway 20.
Comment
JEPS58564
Castilleja exserta subsp. exserta
Rimo Bacigalupi
1969-4-13
9325
Colusa
floor of Bear Valley, along county road on boundary between Townships 15N and 14N Bear Valley
Comment
UCD64254
Castilleja exserta subsp. exserta
Craig D. Thomsen
2000-3-31
2055
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
HSC85948
Castilleja exserta subsp. exserta
Michalski, Raum, Hopson
1987-4-21
58
Colusa
Leesville Rd.
Comment
CHSC112412
Castilleja foliolosa
Lowell Ahart; John Dittes, Josephine Guardino
2013-4-26
18642
Colusa
Rocky serpentine outcrop on the north side of State Highway 20, just east of Lake County Line, 12.2 mile (air) east-northeast of Clear Lake (town), 17.1 miles west of Williams.
566
Comment
CHSC114943
Castilleja foliolosa
Lowell Ahart
2015-4-10
20014
Colusa
On the northside of Brim Road, about 2 miles west of the intersection of Bear Valley Road and Brim Road, about 17 miles (air) west of Williams. Chaparral.
500
Comment
CHSC82623
Castilleja foliolosa
Tara Morgan
2002-4-1
24
Colusa
Found on the side of Bear Valley Rd. located northeast of Bear Creek, south of Bear Valley.
350
Comment
HSC45672
Castilleja foliolosa
Stephen Plant
1978-4-22
207
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
HSC72142
Castilleja foliolosa
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9574
Colusa
Bear Valley Rd., 2.1 mi. from its junction with Hwy. 20
366
Comment
JEPS81325
Castilleja miniata
L. R. Heckard and J. C. Hickman
1982-7-6
5940
Colusa
about 0.5 mi ne Summit Springs (s side of Snow Mt, e of trail); Snow Mt.
1645
Comment
JEPS82554
Castilleja miniata
L. R. Heckard
1983-7-27
6101
Colusa
ca 2 mi w Stonyford road; Little Stony Creek
411
Comment
JEPS82029
Castilleja miniata
Todd Keeler-Wolf
1983-6-22
715
Colusa
2 mi up Goat Mt. road; Little Stony Creek
411
Comment
CHSC111212
Castilleja miniata subsp. miniata
David Isle
2013-8-23
2049
Colusa
Stony Creek Watershed. W bank Salt Ck, ~ 150'NE of Dennis Dr Bridge on Isle Property.
374
Comment
CHSC71451
Castilleja minor subsp. spiralis
Vernon H. Oswald; Lowell Ahart
1998-7-15
9271
Colusa
Bartlett Springs Rd. 1.6 mi west of Bear Valley Rd.
487
Comment
UCR40060
Castilleja rubicundula subsp. lithospermoides
K. B. Barrows, C. G. Phillips, L. Cole, S. A. Haultain
1984-4-28
27
Colusa
Bear Valley, Brim Road, 2.9 mi west of Leesvillle-Lodoga Junction
418
Comment
JEPS121116
Castilleja rubicundula subsp. rubicundula
Lowell Ahart
2013-5-1
18687
Colusa
N of the wash and Hwy 20, just E of Lake County line, 12.2 air miles ENE of the town of Clear Lake, 17.1 air miles W of Williams.
Comment
JEPS124233
Castilleja rubicundula subsp. rubicundula
Lowell Ahart
2015-4-1
19987
Colusa
Inner North Coast Range. 1/2 mile east of Lake County Line, 12 miles (air) east-northeast of Clear Lake (town), 17 miles (air) west of Williams.
Comment
UCD57296
Castilleja rubicundula subsp. rubicundula
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3667
Colusa
BLM Payne Ranch. Near origin of Craig Canyon. Close to Thompson Canyon. West of Hwy. 16, ca. 2 road miles south of junction of Hwy. 20 and Hwy. 16.
349
Comment
CDA11400
Castilleja tenuis
G. F. Hrusa, K. van Katwyk
1995-4-22
12120
Colusa
Inner North Coast Ranges; flat on Walker Ridge Road, approx. 6 m. S of intersection with Bartlett Springs Rd.
Comment
UCD114214
Caulanthus flavescens
W. C. Overton Jr.
1980-4-14
s.n.
Colusa
Into Bear Valley, ca. 1 mile N of junction of State Highway 16 and 20.
Comment
CAS-BOT-BC40506
Caulanthus lasiophyllus
Mrs. H. C. Cantelow
1936-4-11
1163
Colusa
Bear Creek Canyon.
Comment
CAS-BOT-BC40507
Caulanthus lasiophyllus
Roxana S. Ferris
1917-4-12
504
Colusa
4 miles east of Wiliams.
Comment
CHSC22526
Ceanothus cuneatus
Robert A. Schlising; Glenn Keator
1962-1-21
2032
Colusa
Steep adobe bank and open hills.
548
Comment Read comments Mar 26 2014
HSC47566
Ceanothus cuneatus
J. P. Smith, J. O. Sawyer
1978-4-29
9768
Colusa
Walker Ridge Rd. 3.4 mi. from its jct. with Hwy. 20
Comment
RSA399079
Ceanothus cuneatus
Carolyn Sanford
1977-4-24
352
Colusa
Above Barrel Springs Campground.
701
Comment
UCD33934
Ceanothus cuneatus
Beecher Crampton
1975-4-21
9165
Colusa
Colusa County, 4 miles N.N.E. of Lodoga, grapevine summit.
Comment
UCD56939
Ceanothus cuneatus
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3541
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. Thompson Canyon.
344
Comment
CAS-BOT-BC50808
Ceanothus integerrimus
Brad Kerstetter; Roxanne Jackson; Jeff Cox
1995-5-6
043
Colusa
Blue Oak Campground - Left side of road just before reaching camp from highway 20
548
Comment
JEPS82411
Ceanothus integerrimus
L. R. Heckard
1969-5-28
Colusa
ca 6 air mi w Stonyford (along Soney Creek near Fouts Springs)
Comment
UCD170262
Ceanothus integerrimus
D. O. Burge
2016-11-3
2186
Colusa
Fouts Springs area, roadside on Forest Road M10, E of Fouts Springs.
610
Comment
UCD170264
Ceanothus integerrimus
D. O. Burge
2016-11-3
2188
Colusa
Walker Ridge, E of Indian Valley Reservoir, roadside on Bartlett Springs Road.
980
Comment
UCD170330
Ceanothus integerrimus
D. O. Burge
2016-11-3
2189
Colusa
Walker Ridge, E of Indian Valley Reservoir, roadside on Bartlett Springs Road.
860
Comment
UCD82544
Ceanothus integerrimus
Ellen Dean; G. Harrington, C. Thomsen,R. Wilmarth,Chiao-Yi Cheng
2009-5-20
5699
Colusa
Walker Ridge. Along Walker Ridge just S of turn-off to picnic area near Cold Spring.
1007
Comment
HSC90407
Ceanothus jepsonii
R. Cook, M. Lewis, L. Sims
1992-4-11
7
Colusa
1.0 mi S of Blue Oak Recreation Site on Walker Ridge Rd.
685
Comment
UCD58112
Ceanothus jepsonii
Ellen Dean; G. Harrington and P. McIntyre
2007-3-16
3376
Colusa
Payne Ranch. Along Hwy. 20, Destanella Flat area just E of Lake Co. border. Ca. 3.4 road miles west of junction with Hwy. 16. South side of road. East of Destanella.
576
Comment
SEINET13945967
Ceanothus jepsonii
Thomas E. Higley
1974-1
69
Colusa
3/4 mi N of T junction ofIndian Valley; 2800 ft alt., T14N R6W SEC12
Comment
RSA712418
Ceanothus jepsonii subsp. albiflorus
C. L. schmidt
1989-5-6
1249
Colusa
1 mile up dirt road to Trout creek near Davis Campsite and Fouts Springs Campground, 9 miles W of Stonyford. Serpentine of E side of Snow Mtn.
600
Comment
CAS-BOT-BC83782
Ceanothus jepsonii var. albiflorus
D. O. Burge; Steven Kembel
2008-5-27
997 b
Colusa
Rathburn-Petray Mine complex, E of Eaton Springs
700
Comment
HSC31403
Ceanothus jepsonii var. albiflorus
Maralyn O'Meara, Gary S. Lester
1974-5-4
348
Colusa
Walker Ridge Rd., 0.7 mi. from junction with Little Indian Valley Rd.
854
Comment
HSC60452
Ceanothus jepsonii var. albiflorus
J. P. Smith
1977-4-24
9036
Colusa
Along Walker Ridge Rd. above Barrel Springs Campground
701
Comment
UCD81262
Ceanothus oliganthus var. sorediatus
Ellen Dean; G. Harrington, R. Willmarth, B. Rice, and C. Thomson
2009-4-8
5427
Colusa
BLM Bear Creek (Payne) Ranch. Lands to the SW of the intersection of Hwys. 16 and 20. Just north of the road leading up from the confluence of Bear and Cache Creeks.
323
Comment
HSC98207
Ceanothus oliganthus var. sorediatus
Steven Lagos
1974-5-4
43
Colusa
747
Comment
CHSC86117
Centaurea melitensis
Jenny Marr; Caroline Warren
1998-5-4
Colusa
Vicinity of Sites, Stone Corral Creek, and Antelope Valley.
106
Comment
IRVC29846
Centaurea solstitialis
Mark A. Elvin, David Isle, Mark S. Brunell
2006-8-3
4993
Colusa
Mendocino Nat. Forest; E face of Snow Mtn., Stony Creek along M10. Southern Northern Inner Coast Ranges
610
Comment
JEPS110383
Centaurea solstitialis
Lowell Ahart
2006-8-9
13148
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
UCR201558
Centaurea solstitialis
George K. Helmkamp, E. A. Helmkamp
2008-10-14
14255
Colusa
Sacramento Valley, along CA-20, 0.2 mile east of the Sutter County line
9
Comment
POM53290
Centaurea solstitialis
W. R. Mumma
1897-9-3
s.n.
Colusa
Grand Island
Comment
UCD61446
Centromadia parryi subsp. parryi
Ellen Dean; G. Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3891
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek. Approximately 1000 ft NW of parking lot.
339
Comment
UCD66917
Centromadia parryi subsp. parryi
Craig D. Thomsen; G. Harrington
2008-7-6
2784
Colusa
BLM Payne Ranch. Lands to the SW of the jct of Hwys 20 and 16. Near valley at the bottom of Lynch Canyon at the junction of Thompson and Lynch Creeks. Informal name for the building in the area is 'Roadkill Cafe.' Small stockpond ca. 0.2 miles to the south of Roadkill Cafe.
396
Comment
CAS-BOT-BC271546
Centromadia parryi subsp. rudis
A. A. Heller
1941-9-22
16331
Colusa
Along U.S. Highway #99W between Williams and Maxwell
Comment
CHSC80151
Centromadia parryi subsp. rudis
B. Castro; G. Kuenster
2000-7-19
1203
Colusa
Vicinity of Maxwell, Funks Creek, and the Glenn-Colusa canal, on low terrace beside S edge of shallow intermittent stream channel draining eastward out of the hills east of Golden Gate.
41
Comment
CHSC84391
Centromadia parryi subsp. rudis
Lowell Ahart
2003-8-15
10510
Colusa
On the south side of Highway 20, about 1 mile southwest of Williams.
27
Comment
JEPS118677
Centromadia parryi subsp. rudis
B. Castro with Dave Bogener
2011-9-1
1912
Colusa
Sacramento Valley. 10 air mi NW of Colusa, 3 mi W of the Sacramento River and 800 ft N of the northern boundary of Delevan NWR. Near where Hunters and Logan Creeks empty into the Colusa Basin Drain. Moulton Weir 7.5' quad.
Comment
JEPS118719
Centromadia parryi subsp. rudis
B. Castro with Amy Lyons
2011-8-3
1903
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley approximately 1 mi southeast of Funks Reservoir and 800 ft northeast of Tehama-Colusa Canal. Sites 7.5' quad.
Comment
UC1069558
Centromadia parryi subsp. rudis
H. S. Yates
1936-8-14
17575
Colusa
3 mi s Colusa
Comment
UCD130150
Centromadia parryi subsp. rudis
P. B. Kennedy
30-31 May 1922
s.n.
Colusa
Near Colusa.
Comment
UCD77502
Centromadia parryi subsp. rudis
Robert E. Preston
1999-9-24
1242
Colusa
Antelope Valley, at head of Salt Canyon.
219
Comment
CAS-BOT-BC279208
Centromadia pungens subsp. pungens
A. A. Heller
1916-6-9
12391
Colusa
Along the state highway near Colusa
Comment
CAS-BOT-BC279212
Centromadia pungens subsp. pungens
David D. Keck
1933-5-30
2402
Colusa
1.8 miles west of Colusa on road to Williams
Comment
UC1299375
Cephalanthera austiniae
Freed W. Hoffman
1948-6-27
2525
Colusa
8.6 mi. s.w. Fouts Springs (Upper Letts Valley); w. Colusa Co., Upper Letts Valley
1310
Comment
UC931956
Cephalanthus occidentalis var. californicus
Verne Grant and Alva Grant
1946-8-6
7839
Colusa
near Colusa (Butte Creek bank, 1 mi n of Butte Outing Gun Club); Butte Creek
Comment
UCD163000
Cerastium glomeratum
Craig D. Thomsen
2000-3-31
2164
Colusa
Bear Creek Botanical Management Area. Roadside shoulder of Hwy 20 (south side), about 0.3 mile west of Hwy 20/16 intersection.
345
Comment
CHSC84633
Cercis occidentalis
Matt Quinn
2001-3-31
38
Colusa
Found along drainage flowing out of Bear Valley, near Wilbur Hot Springs, north of Highway 20.
405
Comment
HSC71297
Cercis occidentalis
Thomas W. Nelson, Jane P. Nelson
1979-4-12
4629
Colusa
Along Stony Creek below Digger Pine Campground
Comment
UCR37606
Cercis occidentalis
C. Houseman, M. A. Strull, L. Linstedt
1984-4-29
14
Colusa
Bear Valley Rd., 2 mi north of Hwy 20
366
Comment
CHSC1542
Cercocarpus betuloides
E. Gabel
1935-5-10
Colusa
Stonyford.
335
Comment
CAS-BOT-BC136987
Cercocarpus betuloides var. betuloides
Roxana S. Ferris
1926-4-23
6419
Colusa
Grade beyond Mountain House on Williams - Stonyford Road
Comment
UC1543051
Cercocarpus betuloides var. betuloides
Donald G. Nelson et. al.
1940-6-8
679
Colusa
several mi above Bonnie View (w boundary of Snow Mountain, Snow Mountain Trail); Snow Mountain, Snow Mountain Trail
1066
Comment
UCD70292
Cercocarpus betuloides var. betuloides
D. Sanchez-Mata
1998-7-9
s.n.
Colusa
Lodoga-Stonyford. Mendocino National Forest. Goat Mountain Road between Lodoga and Red Rock Cabin.
450
Comment
CDA12016
Chaenactis glabriuscula
G. F. Hrusa
1990-4-8
7668
Colusa
North Coast Biodiversity Arena; Road into Bear Valley from the S, passing Wilbur Springs, and originating at Hwy. 20.
Comment
UCD159334
Chaenactis glabriuscula
D. S. Park; E. Dean
2010-6-5
118
Colusa
Walker ridge, Cold Spring Mt. Exposed serpentine outcrop.
1032
Comment
UCD57299
Chaenactis glabriuscula
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3670
Colusa
BLM Payne Ranch. Lands to the southwest of junction of Hwy. 20 and Hwy. 16. Thompson Canyon, near juncture with Craig Canyon. Above Thompson Creek.
366
Comment
HSC45751
Chaenactis glabriuscula var. glabriuscula
Sheila Logan
1978-4-22
82
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
CAS-BOT-BC284537
Chaenactis glabriuscula var. heterocarpha
Annetta Carter
1938-5-8
1394
Colusa
Bear Creek Canyon, 4 miles southeast of Wilbur Springs, Inner North Coast Range
Comment
UCD82735
Chaenactis glabriuscula var. heterocarpha
Craig Thomsen; G. Harrington
2009-5-14
2916
Colusa
Colusa County on Walker Ridge: south of spur road about 1/2 mile east of Walker Ridge Road, en route to Eaton Springs.
762
Comment
JEPS75724
Cheilanthes gracillima
L. R. Heckard
1974-9-9
3859
Colusa
ca. 1/4 mi se Foutch Camp; Snow Mt
1828
Comment
JEPS80114
Chenopodium
L. R. Heckard with J. Hickman
1980-7-1
5273
Colusa
East Peak Snow Mt. (flat at summit, Colusa-Lake County boundary)
2148
Comment
CHSC77561
Chenopodium album
Heidi West; Jenny Marr, Caroline Warren, Natalie Wight
1998-6-11
Colusa
Vicinity of Salt Lake and Sites.
97
Comment
JEPS110404
Chenopodium album
Lowell Ahart
2006-8-22
13221 A
Colusa
South side of Stony Creek, about 100 yards west of the bridge across Stony Creek, just north of Stonyford
349
Comment
POM312492
Chenopodium album
H. L. Mason, Verne Grant
1946-8-7
12978
Colusa
8 miles north of Colusa; Butte Sink.
Comment
UC72555
Chenopodium ambrosioides
H. P. Chandler
1905-9-14
Colusa
Princeton
Comment
UCR201556
Chenopodium berlandieri
George K. Helmkamp, E. A. Helmkamp
2008-10-14
14272
Colusa
Sacramento Valley, along CA-20, 2 miles west of Meridian
14
Comment
RSA718051
Chenopodium botrys
L. Ahart
2006-8-9
13098
Colusa
Gravel bar on the south side of Stony Creek, at Mine Camp, about 3.5 miles (air) west of Stonyford.
455
Comment
JEPS75836
Chenopodium pumilio
L. R. Heckard
1974-9-11
3951
Colusa
edge of meadow just e Foutch Camp; Snow Mt.
1859
Comment
UCD168862
Chenopodium strictum var. glaucophyllum
John Anderson
2015-1
s.n.
Colusa
about 0.5 mile north of Colusa Casino west of Highway 45.
Comment
JEPS80466
Chimaphila menziesii
Alice Q. Howard
1972-7-10
8
Colusa
wet mossy spring area crossing trail from Fouts Camp to Box Springs (highest of 2 areas on n. side of ridge separating Trout & Paradise Creeks); Snow Mt.
1676
Comment
UCD57921
Chloris gayana
Beecher Crampton
1958-6-27
4980
Colusa
2.5 miles south of Grimes.
Comment
UCD57927
Chloris gayana
Beecher Crampton
1961-7-20
5932
Colusa
2 miles S of Grimes.
Comment
SEINET4565689
Chloris virgata
M. J. Williams
1981-9-2
81- 162 -1
Colusa
Near an almond orchard on Wisconsin Avenue, south of Arbuckle
Comment
UCD63102
Chlorogalum pomeridianum
Ellen Dean; G. Harrington, C. Thomsen, S. Harrison
2008-5-18
4933
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Unnamed drainage south of Hwy 20 between Hwy 16 and Lynch Canyon that drains to Bear Creek by passing under Hwy 20.
348
Comment
CAS-BOT-BC238007
Chloropyron palmatum
Dean Wm. Taylor
1988-8-8
10024
Colusa
Sacramento Valley. Colusa National Wildlife Refuge, in the far SE corner of the Refuge along Ohm Road 1 mile N of Ware Road
22
Comment
SEINET10745049
Chloropyron palmatum
R. Stinchfield
1916-6-17
Stinchfield 284
Colusa
In alkaline soil, overflowed lands at Tule near College City
Comment
HSC45743
Chorizanthe membranacea
Stephen Plant
1978-4-22
216
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
UC638667
Chorizanthe membranacea
Ethel Crum
1938-5-7
2015
Colusa
4.2 mi n Rumsey (Comanche Hills); Inner North Coast Range, Comanche Hills
254
Comment
HSC65996
Chorizanthe membranacea
D. Boyd, M. Eichelberger, Tim Messick, T. Ranker
1980-4-20
43
Colusa
Leesville Rd. from Leesville to Williams, 3.8 mi. E of Leesville.
Comment
JEPS81831
Cirsium cymosum var. cymosum
L. R. Heckard
1969-5-28
2230
Colusa
just below Candy Bucket Springs (on Stoneyford-Fouts Spring road)
670
Comment
CHSC88587
Cirsium douglasii var. breweri
L. P. Janeway; B. Castro
2001-6-3
7099
Colusa
Inner North Coast Ranges. Spring at Grapevine Flat, on top of Walker Ridge about 0.8 km east of Baldy Mountain.
884
Comment
JEPS81287
Cirsium occidentale var. venustum
L. R. Heckard and J. C. Hickman
1982-7-5
5898
Colusa
slope below (s of) area Summit Springs (s side of mountain); Snow Mt., Summit Springs
1500
Comment
UCD57628
Cirsium occidentale var. venustum
Michele Lanctot; with Plant Biology 102
2007-4-29
4
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central part of ranch. Thompson Canyon. Northern edge of trail.
361
Comment
JEPS75715
Cirsium vulgare
L. R. Heckard
1974-9-9
3841
Colusa
just se Foutch Camp; Snow Mt.
1920
Comment
UCD81256
Cirsium vulgare
Ellen Dean; G. Harrington, R. Willmarth, B. Rice, and C. Thomson
2009-4-8
5421
Colusa
BLM Bear Creek (Payne) Ranch. Lands to the SW of the intersection of Hwys. 16 and 20. Just north of the road leading up from the confluence of Bear and Cache Creeks.
323
Comment
UCD57862
Clarkia
Gordon Harrington; Diana Hickson, Jack Alderson
2007-4-29
49
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. South terrace of Thompson Creek about 300 feet upstream of breached dam close to Road Kill Cafe.
395
Comment
UCD105130
Clarkia
G. L. Stebbins Jr.; M. A. Nobs, J. A. Rattenbury
1947-4-27
3735
Colusa
3 miles W of Leesville, on road to Bartlett Springs.
Comment
CHSC83595
Clarkia affinis
L. P. Janeway
2002-4-24
7518
Colusa
Sacramento Valley/Inner North Coast Ranges border. Vicinity of Logan Ridge, Stone Corral Creek, Funks Creek, and Golden Gate.
124
Comment
CHSC86125
Clarkia affinis
Jenny Marr; Caroline Warren
1998-5-4
Colusa
Vicinity of Sites, Stone Corral Creek, and Antelope Valley.
106
Comment
UCR39819
Clarkia affinis
P. Williams, Mike Malamus, Brian Kearney
1984-4-28
72
Colusa
Bear Valley Road 2 mi north of Hwy 20
366
Comment
CDA37986
Clarkia affinis
T. C. Fuller
1958-5-28
s.n.
Colusa
Highway 20, 2 miles west of junction with Highway 16.
0
Comment
UCD104016
Clarkia affinis
Grady L. Webster
1977-5-15
7682
Colusa
Along Bear Creek, ca. 2 mile W of Route 20 along Wilbur Springs Road.
365
Comment
CDA38051
Clarkia concinna
T. C. Fuller
1958-5-27
s.n.
Colusa
South of Highway 20, 1 mile west of junction with Highway 16.
0
Comment
SJSU11006
Clarkia concinna subsp. concinna
J. B. Willis Jr
1969-5-31
200
Colusa
by State Hwy 20, 0.5 mi W of junction with Hwy16 c. midway between Williams & Clear Lake
Comment Read comments Aug 26 2011
CAS-BOT-BC164528
Clarkia gracilis subsp. albicaulis
Richard A. DeMartile
1983-6-15
107
Colusa
Bartlett Springs Road north of Baldy Mountain
Comment
LA47307
Clarkia gracilis subsp. albicaulis
Francia Chisaki; Helen Sharsmith
1959-5-27
1339
Colusa
about 0.25 mi. E of Cooks Spring
Comment
UCD63108
Clarkia gracilis subsp. gracilis
Ellen Dean; G. Harrington, C. Thomsen, S. Harrison
2008-5-18
4939
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Unnamed drainage south of Hwy 20 between Hwy 16 and Lynch Canyon that drains to Bear Creek by passing under Hwy 20.
351
Comment
UCR212337
Clarkia gracilis subsp. tracyi
Craig D. Thomsen
2001-5-24
2504
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, south side of Hwy 20, c. 0.5 mi west of Hwy 20/16 intersection (between mileposts 2.17 and 2.25).
342
Comment
JEPS43724
Clarkia purpurea subsp. purpurea
Alice King
1906-1-1
Colusa
College City
Comment
CAS-BOT-BC240292
Clarkia purpurea subsp. quadrivulnera
Ellen Dean; C. Thomsen; G. Harrington; Davis Botanical Society
2010-6-5
6085
Colusa
Walker Ridge. Along Walker Ridge Road, N of turnoff to Indian Valley Reservoir but S of Til Jones Springs
817
Comment
UC125400
Clarkia purpurea subsp. quadrivulnera
Miss M. Alice King
1905-1
Colusa
near Arbuckle (near College City); Sacramento Valley
Comment
UCD64427
Clarkia purpurea subsp. quadrivulnera
Craig D. Thomsen
2000-4-28
2201
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UCD82122
Clarkia purpurea subsp. quadrivulnera
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5650
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
839
Comment
UCR212340
Clarkia purpurea subsp. quadrivulnera
Craig D. Thomsen
2000-4-28
2201
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mi west of Hwy 20/16 intersection, milepost 2.80-3.00
310
Comment
CHSC72453
Clarkia rhomboidea
L. P. Janeway; Dave Isle
1998-7-3
5707
Colusa
Along Pacific Ridge Road (16N06) 0.5 mi east of road to Spanish Ridge and Hough Springs; about 50 ft below ridge top on north-facing slope. On road cutbank.
1051
Comment
HSC94112
Clarkia rhomboidea
G. Fred Hrusa
1998-6-19
14604
Colusa
Above Upper Little Stony Creek, Goat Mtn. Rd., about 2 km W of campground
490
Comment
CHSC101595
Claytonia exigua subsp. exigua
David W. Isle
2002-4-18
1655
Colusa
Mendocino National Forest; N of Fouts Springs, N of Chlorinator Building and road to Bathhouse Trail (Snow Mtn). N aspect of E drainage; MDB and M.
524
Comment
UC1051500
Claytonia exigua subsp. exigua
Helen K. Sharsmith
1953-6-19
4281
Colusa
near Trough Springs (on Trough Springs Ridge); Inner North Coast Ranges, Mendocino National Forest
975
Comment
CHSC86523
Claytonia parviflora subsp. parviflora
B. Castro; Beth Hendrickson
2003-3-19
1392
Colusa
Vicinity of Sites, hills N of the Sites-Lodoga Rd, and Stone Corral Creek.
198
Comment
UC1745696
Claytonia parviflora subsp. parviflora
Annetta M. Carter, Sarah Dyal, Ethel Crum
1938-5-8
1382
Colusa
Between Leesville & Stonyford. 6.6 mi. S of Lodoga. 3 mi. N of Leesville.
Comment
UC1745698
Claytonia parviflora subsp. parviflora
Annetta M. Carter, Sarah Dyal, Ethel Crum
1938-5-8
1379
Colusa
Between Leesville & Stonyford. 6.6 mi. S of Lodoga. 3 mi. N of Leesville.
Comment
UCD56942
Claytonia perfoliata
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3544
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. Thompson Canyon.
349
Comment
UCD65634
Claytonia perfoliata
Craig D. Thomsen
2000-4-12
2137
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
JEPS86631
Claytonia perfoliata
L. R. Heckard with P. C. Silva, R. L. and M. Moe
1988-6-18
6691
Colusa
parking area for trail to Snow Mountain Peaks
1625
Comment
UCD100555
Claytonia saxosa
A. M. Shapiro
1994-6-12
s.n.
Colusa
at road junction just below summit of Goat Mountain.
Comment
SFV8355
Clematis lasiantha
D. Grau
1972-4-1
4
Colusa
Highway 16, 5 miles south of junction with Highway 20.
Comment
UC629760
Collinsia bartsiifolia var. bartsiifolia
Ethel Crum
1938-5-8
2020
Colusa
3 mi n Leesville
Comment
CHSC39775
Collinsia grandiflora
Brian H. McMurtry
1979-3-31
1
Colusa
Ca. 0.3 m w of jct of Hwys. 20 and 16, s side of Bear Creek, ca. 18 m sw of Williams.
321
Comment
UCD66680
Collinsia greenei
Craig D. Thomsen
2000-5-11
2304
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
UCD123553
Collinsia greenei
G. Ledyard Stebbins Jr.
1964-7-4
6170
Colusa
northeast side of Mt. St. John, west of Stonyford.
1524
Comment
UCR212362
Collinsia heterophylla
Craig D. Thomsen
2000-4-12
2139
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mi west of Hwy 20/16 intersection, milepost 3.00
310
Comment
UCD56670
Collinsia sparsiflora
Jack Alderson
2007-3-25
6
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
559
Comment
CHSC70908
Collinsia sparsiflora var. arvensis
Vernon Oswald; Lowell Ahart
1998-4-21
8946
Colusa
Stonyford-Lodga Rd. 4.2 mi south of Stonyford.
384
Comment
POM273490
Collinsia sparsiflora var. arvensis
Lyman D. Benson
1933-4-16
4332
Colusa
5 miles east of Lake County line. Mt. Range: Inner N. Coast; Watershed: N. Fork Cache Creek.
457
Comment
HSC44465
Collinsia sparsiflora var. collina
R. York
1978-4-22
140
Colusa
Bear Valley Rd., 1.5 mi. from its junction with S.R. 20
409
Comment
UC1736363
Collinsia sparsiflora var. collina
Dean W. Taylor
1992-4-16
12404
Colusa
East Park Reservoir, on stony hillsides ca. 0.4 miles due west from spillway into Little Stony Creek
411
Comment
UC638654
Collinsia sparsiflora var. collina
Ethel Crum
1938-5-8
2029
Colusa
3 mi n Leesville; Inner North Coast Range
Comment
UCD57622
Collinsia sparsiflora var. collina
Joseph A. E. Stewart; with Plant Biology 102
2007-4-29
4
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central part of ranch. Craig Canyon. South side of unimproved road.
335
Comment
UC638655
Collinsia sparsiflora var. sparsiflora
Ethel Crum
1938-5-8
2028
Colusa
3 mi n of Leesville (Inner North Coast Range); Inner North Coast Range
Comment
JEPS81379
Collinsia torreyi var. latifolia
L. R. Heckard and J. C. Hickman
1982-7-8
5990
Colusa
trail from Saddle between East and West Peaks towards Signal Peak Snow Mt.
2042
Comment
JEPS81380
Collinsia torreyi var. wrightii
L. R. Heckard and J. C. Hickman
1982-7-8
5991
Colusa
trail from saddle between E and W Peaks towards Signal Peak, Snow Mt. Snow Mt.
2042
Comment
CHSC48648
Collomia diversifolia
Vernon Oswald
1984-5-2
1167
Colusa
Mendocino Nat. Forest, Fouts Spring Rd. (M10; 18N01) 5.7 mi w of Stonyford. On a road cut.
609
Comment
JEPS94201
Collomia diversifolia
Vernon Oswald and Lowell Ahart
1998-5-7
9006
Colusa
Bartlett Springs Road 2.1 mi w of Bear Valley Road (0.8 mi e of Sawtelle Valley and Grapevine Flat Roads); Bartlett Springs Road
524
Comment
UCD74342
Collomia diversifolia
G. Ledyard Stebbins
1968-5-10
6686
Colusa
South end of Walker Ridge, north of Hwy 20. Near headwaters of Sulphur Creek. (Note: notebook says date of collection was 10 May. Labels made by Stebbins at CAS say 15 May.)
762
Comment
UCD81856
Collomia diversifolia
Ellen Dean; K. Mawdsley,G. Harrington,R. Wilmarth,B. Rice,E. Salvia
2009-5-27
5740
Colusa
Walker Ridge. Along Walker Ridge Road. Lookout area with fence and view of Indian Valley Reservoir. North of turnoff to Indian Valley Reservoir and S of turnoff to picnic area. W side of road.
1061
Comment
CDA40008
Collomia diversifolia
Vernon H. Oswald & Lowell Ahart
1998-5-7
9006
Colusa
Bartlett Springs Road 2.1 miles west of Bear Valley Road, 0.8 mile east of Sawtelle Valley and Grapevine Flat roads.
Comment
JEPS15537
Collomia tinctoria
G. Thomas Robbins with L. R. Heckard
1956-7-25
3695
Colusa
open rocky slope in woods on ridge above Fouts Camp (along trail to Snow Mt. (about 1 1/2 mi airline se of summit), on Lake-Colusa County boundary)
1920
Comment
JEPS80138
Collomia tinctoria
L. R. Heckard with J. Hickman
1980-7-2
5298
Colusa
just above Summit Spring entrance to Snow Mt. trail (ca 10 mi w of Stonyford, Colusa-Lake County boundary); Snow Mt.
1630
Comment
UC1051512
Collomia tinctoria
Helen K. Sharsmith
1953-7-1
4402
Colusa
Linger Longer Camp Inner North Coast Ranges, Mendocino National Forest (Goat Mountain)
1584
Comment
UCD72535
Conium maculatum
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3826
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. West side of Bear Creek, ca. 0.25 mile downstream of bridge.
246
Comment
CHSC13499
Convolvulus arvensis
L. V. Ritter
1969-4-30
217
Colusa
Ca 6 mi. sw of Williams, w side of Highway 20.
Comment
CHSC67606
Cordylanthus palmatus
James D. Jokerst
1988-8-23
3036
Colusa
Delevan National Wildlife Refuge S of Willows, in Cell 12.
Comment
CHSC67608
Cordylanthus palmatus
James D. Jokerst
1988-8-23
3038
Colusa
Colusa National Wildlife Refuge S of Willows, in Tract 7 ca. 150 m NE of Colusa Trough.
Comment
JEPS99065
Cordylanthus palmatus
Dean W. Taylor
1988-8-8
10024
Colusa
Colusa National Wildlife Refuge, far southeastern corner of Ohm Rd, 1 mi n of Ware Rd
22
Comment
RSA0084707
Cordylanthus palmatus
Ellen Cypher
2004-9-9
2004 -018
Colusa
Delevan National Wildlife Refuge, Tract 33, CNDDB EO# 20
17
Comment
UC496162
Cordylanthus palmatus
Roxana Stinchfield
1916-7-17
284
Colusa
near College City; ; near College City, Colusa Co.
Comment
NY28941
Cordylanthus palmatus
R. D. Stone
1987-8-26
850
Colusa
This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request.
Comment
CDA16105
Cordylanthus pilosus
G. F. Hrusa, Dmitri Geltman (LE)
1999-8-18
15248
Colusa
North Coast Ranges; Cedar Camp- Goat Mtn. Rd.
792
Comment
UCD123116
Cordylanthus pringlei
Craig Thomsen; Art Shapiro
2004-9-16
s.n.
Colusa
along Cool Springs Road.
Comment
SFV8758
Cornus glabrata
J. K. Clark
1966-5-8
23
Colusa
On Lodoga to Stongford Road, 2.5 miles northwest of Lodoga.
320
Comment
UCD67592
Cornus glabrata
Charles Martin
1986-5-17
30
Colusa
Along Fouts Spring Rd., 2.8 miles W of Stonyford, along roadside. Growing along small stream, soil dry, in direct sunlight. Small shrub, ca. 1m tall, flowers small, white.
Comment
JEPS75756
Cornus sericea subsp. sericea
L. R. Heckard and R. Bacigalupi
1976-9-6
4438
Colusa
at margin of Trout Creek at trail crossing Snow Mt.
1828
Comment
JEPS75866
Cornus sericea subsp. sericea
L. R. Heckard
1974-9-10
3882
Colusa
along East Circle Trail Snow Mt. (along spur running s.e. from West Peak)
2011
Comment
JEPS80825
Cornus sericea subsp. sericea
L. R. Heckard and J. Hickman
1981-7-31
5797
Colusa
e. side Snow Mt. (Dark Hollow Creek)
1584
Comment
CHSC53932
Cotula coronopifolia
Vernon H. Oswald
1991-4-21
4524
Colusa
Two Mile Rd, 3.7 mi south of Maxwell Colusa Rd. Along road through rice fields.
27
Comment
JEPS118675
Cotula coronopifolia
B. Castro, L. P. Janeway
2011-4-27
1863
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; approximately 1 mi southeast of Funks Reservoir and 800 ft northeast of Tehama-Colusa Canal. Sites 7.5' quad.
Comment
UC75673
Crassula connata var. erectoides
Miss M. Alice King
1905-1
Colusa
near College City; Sacramento Valley
Comment
CHSC62886
Crassula tillaea
Vernon H. Oswald
1994-3-14
5993
Colusa
Refuge located ca. 7 mi S of Willows, in the parking area in the NE corner of Tract 41. Sacramento National Wildlife Refuge.
25
Comment
CHSC61424
Croton setiger
Vernon H. Oswald
1993-8-16
5805
Colusa
Sacramento National Wildlife Refuge. Refuge located ca. 7 mi S of Willows, W1/4 of Tract 44, near the S boundary of the refuge. Field on the N side of Hunters Creek.
24
Comment
CHSC84955
Croton setiger
Lowell Ahart
2003-10-23
10676
Colusa
Along Squaw Creek, just south of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
CHSC94477
Croton setiger
Lowell Ahart
2006-8-9
13114
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
UCR205144
Croton setiger
George K. Helmkamp, E. A. Helmkamp
2008-10-14
14249
Colusa
Sacramento Valley, along CA-20, 0.2 mile east of the Sutter County line
9
Comment
SACT000805
Crypsis aculeata
Herbert Mason
1945-7-11
Colusa
Alkali Plains three miles above Colusa
Comment
SACT000807
Crypsis niliacea
Herbert Mason
1945-7-11
Colusa
Alkali Plains 3 miles above Colusa
Comment
JEPS110415
Crypsis schoenoides
Lowell Ahart
2006-8-9
13096
Colusa
Gravel bar on the south side of Stony Creek, at Mine Camp, about 3 1/2 miles (air) west of Stonyford
455
Comment
UCD59814
Crypsis schoenoides
H. L. Mason
1945-7-11
12642
Colusa
Near Butte Creek; Butte Lodge Outing Club, 3 miles above Colusa.
Comment
POM198510
Crypsis vaginiflora
Roxana Stinchfield
1916-7-11
466
Colusa
Davis Tule, near Sycamore Slough.
Comment
POM313168
Crypsis vaginiflora
H. L. Mason
1945-7-11
12643
Colusa
Near Butte creek; Butte Lodge Outing Club, 3 miles above Colusa.
Comment
RSA126601
Crypsis vaginiflora
H. S. Yates
1936-8-14
6136
Colusa
6 miles S. of Grimes
15
Comment
UC1146681
Crypsis vaginiflora
Freed W. Hoffman
1944-7-13
1966
Colusa
junction of Bear Creek and Sulphur Creek (bridge over Bear Creek, near Sulphur Springs); North Coast Ranges
Comment
UC1950107
Crypsis vaginiflora
Barbara Ertter with Elizabeth Neese, Laura Fujii, Dawn Espindola
1989-10-21
8873
Colusa
SE end of East Park Reservoir N of Lodoga
Comment
UCD56918
Cryptantha
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3521
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. In Craig Canyon.
334
Comment
RSA756835
Cryptantha affinis
Barbara Ertter
1989-7-1
8615
Colusa
Road to Goat Mountain Lookout 1.7 miles S of Rt. M-10 (Bear Creek-Fouts Spring Road) at head of S Fork Stony Creek, ca. 12 airmiles WSW of Stonyford.
1463
Comment
UCD84551
Cryptantha clevelandii
Ellen Dean; C. Thomsen, T. Hansen, and windfarm meeting
2010-6-11
6149
Colusa
Walker Ridge. Just south of radio tower on Cold Spring Mountain.
945
Comment
CAS-BOT-BC218808
Cryptantha excavata
R. F. Hoover
1968-5-27
11099
Colusa
Bear Creek canyon n. of Highway 20 (near Wilbur Springs), on barren crumbled shale
Comment
JEPS80196
Cryptantha flaccida
L. R. Heckard and J. Hickman
1980-7-3
5350
Colusa
ca 10 mi w Stonyford (just w of Summit Springs sw Snow Mt.); Snow Mt.
1548
Comment
UCR44920
Cryptantha hendersonii
L. F. LaPre
1986-5-30
s.n.
Colusa
1.5 mi west of Mendocino National Forest Boundary on Stony Creek Rd [c. 4 mi. west of Stonyford]
671
Comment
HSC48141
Cryptantha hispidula
Thomas W. Nelson, Jane P. Nelson
1978-4-30
3969
Colusa
Along SR 20 just E of Colusa-Lake County line
549
Comment
UCD63124
Cryptantha hispidula
Ellen Dean; G. Harrington, C. Thomsen, S. Harrison
2008-5-18
4954
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Unnamed drainage south of Hwy 20 between Hwy 16 and Lynch Canyon that drains to Bear Creek by passing under Hwy 20.
416
Comment
SEINET7883435
Cryptantha hispidula
Leo Koch
1940-1
936 a
Colusa
Serpentine hill near Lake and Colusa county line along Highway 20, Williams Highway
Comment
CHSC146
Cryptantha intermedia
V. Holt
1935-5-17
Colusa
Stonyford.
Comment
UC857152
Cryptantha intermedia
Alice Eastwood and John Thomas Howell
1938-5-16
5629
Colusa
Lake-Colusa county line on road to Williams
Comment
UCD61451
Cryptantha intermedia
Ellen Dean; G. Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3895
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek. Approximately 1500 ft NW of parking lot.
368
Comment
UC1177888
Cryptantha intermedia
Peter M. Ray
1950-4-15
1713
Colusa
road 3 mi e Stony Creek Bridge (s side of canyon of Big Stony Creek); Big Stony Creek
Comment
UC78682
Cryptantha microstachys
K. Brandegee
Apr 1889
Colusa
Epperson's
Comment
UC726039
Cryptantha microstachys
A. A. Heller
1940-6-7
15713
Colusa
ridge e of Lodogo (just above the road leading to Sites)
Comment
CDA15473
Cryptantha muricata
G. F. Hrusa, WTD
1998-6-19
14610
Colusa
North Coast Ranges; Ridge above Little Stony Creek drainage on Goat Mtn. Rd. below intersection with USFS Pacific Ridge Rd. (M5).
Comment
UC1212061
Cryptantha muricata
C. R. Bell
1950-4-26
770
Colusa
w of Leesville (on road to Bartlett Springs, halfway up e side of county-line ridge)
Comment
UCD84450
Cryptantha muricata
Ellen Dean; C. Thomsen, G. Harrington, R. Wilmarth, R. Wenk
2010-6-2
6058
Colusa
Walker Ridge. Along Walker Ridge Rd, E side of road in turnout. Just past Pinus attenuata groves.
981
Comment
UC78654
Cryptantha rostellata
Katharine Curran
May 1884
Colusa
Leesville
Comment
JEPS80390
Cryptantha simulans
L. R. Heckard and J. Hickman
1981-6-22
5623
Colusa
Dark Hollow trail Snow Mt.
1935
Comment
UC1299423
Cryptantha simulans
Freed W. Hoffman
1947-6-19
1620
Colusa
road from Stonyford to Fouts Springs (w Colusa County); North Coast Ranges
Comment
UCR212290
Cryptantha torreyana
Ellen Dean, Davis Botanical Society
2008-5-31
5008
Colusa
West of I-5 at Maxwell, east slope of Goat Mountain, along Goat Mountain Road, Cedar Grove Campground
1312
Comment
UC1051501
Cryptantha torreyana
Helen K. Sharsmith
1953-6-19
4282
Colusa
near Trough Springs (on Trough Springs Ridge); Inner North Coast Ranges, Mendocino National Forest
975
Comment
JEPS13746
Cupressus macnabiana
Frank W. Gould
1939-4-8
631
Colusa
1.5 mi w of Colusa County line (on road to Lucerne)
Comment
RSA589940
Cupressus macnabiana
Michael A. Vincent, Robert Rhode
1996-3-30
7307
Colusa
Along Walker Ridge Road, 1.0 miles S of junction with Brim Road
Comment
UCD67665
Cupressus macnabiana
D. Sanchez-Mata
1996-7-3
s.n.
Colusa
Williams. Walker Ridge. Wilburg Springs-Wintun Camp.
850
Comment
CAS-BOT-BC80806
Cupressus sargentii
C. B. Wolf; E. R. Johnson
1934-10-15
6189
Colusa
[Cook] Cooks Springs, western part of county
548
Comment
CAS-BOT-BC80807
Cupressus sargentii
Hugh Leech
1971-10-9
s.n.
Colusa
[Cook's] Cooks Springs
Comment
CHSC62835
Cupressus sargentii
Vernon H. Oswald; Lowell Ahart
1994-3-23
6010
Colusa
Frenzel Creek Research Natural Area on the S side of Little Stony Creek, in the section on the E side of Frenzel Creek, S of Stonyford.
518
Comment
NY16797
Cupressus sargentii
C. B. Wolf
1934-10-15
6189
Colusa
This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request.
Comment
UC1116696
Cuscuta californica
Beecher Crampton
1961-7-20
5935
Colusa
4 mi se Grimes (along Knight's Landing Road)
Comment
SBBG115554
Cuscuta californica var. californica
B. Crampton
1961-7-20
5935
Colusa
4 mi SE of Grimes, along Knight's Landing Rd
Comment
UCD67007
Cuscuta californica var. californica
Craig D. Thomsen
2008-5-23
2740
Colusa
BLM Payne Ranch. Lands to the SW of Hwy 16/20 intersection. About 0.75 mile south of Hwy 20 (south of Destanella Flat), 2.5 miles west of Hwy 16.
520
Comment
UCD126319
Cuscuta indecora var. indecora
Herbert L. Mason; Verne Grant
1946-8-6
12974
Colusa
2.7 miles north of Colusa between Sacramento River and Butte Creek.
Comment
JEPS90814
Cuscuta salina
Dean W. Taylor
1993-8-31
14072
Colusa
200 m e of North Fork Logan Creek (Sacramento Valley, Sacramento National Wildlife Refuge); Sacramento Valley, Sacramento National Wildlife Refuge
24
Comment
RSA313623
Cycladenia humilis
Brandegee
1892-6-23
s.n.
Colusa
Snow Mountain
Comment
SEINET3157202
Cycladenia humilis
T. S. Brandegee
1890-6-23
sn
Colusa
Snow Mountain
Comment
CHSC32212
Cycladenia humilis var. humilis
James Jokerst
1980-8-7
1063
Colusa
North Coast Ranges. Near Snow Mountain (West).
Comment Read comments Jun 8 2007
UC1151661
Cynodon dactylon
Beecher Crampton
1958-6-26
4975
Colusa
5.5 mi s College City
Comment
SEINET11262863
Cynoglossum grande
Richard R. Halse
2014-3-25
9032
Colusa
Along the Sites Logoda Road ca 4.7 miles NE of Logoda on the W end of Grapevine Pass.; 0
527
Comment
UCD56936
Cynoglossum grande
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3538
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. Thompson Canyon.
344
Comment
CHSC112020
Cynoglossum grande
David Isle
1977-4-5
2069
Colusa
Mendocino National Forest. About 1.3 mile NE of Fouts Springon Upper Davis Flat.
493
Comment
UCD61465
Cynosurus echinatus
Ellen Dean; G. Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3911
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek. Approximately 1.5 miles SW of parking lot in Eula Canyon.
310
Comment
CAS-BOT-BC114782
Cyperus acuminatus
Herbert L. Mason; Verne Grant
1946-8-6
12969
Colusa
Pond 2.7 miles N of Colusa between Sacramento River and Butte Creek.
Comment
CAS-BOT-BC114783
Cyperus acuminatus
Milo S. Baker
1946-9-4
11590
Colusa
Gridley-Princeton Rd. Butte Sink.
Comment
CAS-BOT-BC114731
Cyperus difformis
John Thomas Howell
1944-7-18
19838
Colusa
Roadside hollow in shallow overflow from rice fields, 3 mi W of Williams.
30
Comment
UC698628
Cyperus difformis
P. B. Kennedy
1925-9-18
Colusa
Cortena, Colusa
Comment
UCD141006
Cyperus difformis
V. C. Bryant
1931-6-24
2205
Colusa
Colusa.
Comment
UCD141008
Cyperus difformis
John Thomas Howell
1944-7-18
19838
Colusa
3 miles west of Williams.
Comment
JEPS110394
Cyperus eragrostis
Lowell Ahart
2006-8-22
13209
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
UC1100527
Cyperus eragrostis
Herbert L. Mason and Verne Grant
1946-9-5
13117
Colusa
1.6 mi. w. Williams (rd. to Lake Co.)
Comment
UCD54036
Cyperus eragrostis
K. Esau; D. Hartmenn
1941-7-17
s.n.
Colusa
near Williams.
Comment
JEPS110331
Cyperus erythrorhizos
Lowell Ahart
2006-9-26
13356
Colusa
Along the deep ditch, south side of the Delevan National Wildlife Refuge, north side of Maxwell road, about 3 miles west of Colusa Princeton Road, about 5 1/2 miles east of Maxwell
24
Comment
UC1100515
Cyperus erythrorhizos
Herbert L. Mason and Verne Grant
1946-8-13
13012
Colusa
2 mi. w. Colusa (on Williams hwy. by gridge); Butte Sink
Comment
UC72520
Cyperus erythrorhizos
H. P. Chandler
1905-9-14
Colusa
Princeton
Comment
UCD141054
Cyperus erythrorhizos
H. L. Mason
1945-9-19
12724
Colusa
1 mile N of Colusa. Below causeway over Butte Sink spillway, E bank of Sacramento River.
Comment
UCD141052
Cyperus erythrorhizos
P. B. Kennedy
30-31 May 1922
s.n.
Colusa
Exact location unknown.
Comment
POM313098
Cyperus odoratus
H. L. Mason
1945-9-19
12721
Colusa
Below caus[e]way over Butte Sink spillway, East bank of Sacramento River, 1 mile north of Colusa.
Comment
RSA107118
Cyperus squarrosus
G. Thomas Robbins, L. R. Heckard
1956-7-25
3701
Colusa
Lake - Colusa county boundary. Pond in meadow at eastern base of ridge that forms a southeastern extension of Snow Mountain West, about 1/2 mile airline from its summit
1982
Comment
POM313066
Cyperus strigosus
S. Galen Smith
1949-9-9
1871
Colusa
Rice fields 3 miles west of Williams
Comment
UCD141160
Cyperus strigosus
Malcolm A. Nobs; S. Galen Smith
1949-9-9
1871
Colusa
3 miles west of Williams.
Comment
CAS-BOT-BC445508
Damasonium californicum
A. A. Heller; H. E. Brown
1902-5-1
5437
Colusa
Near Colusa
Comment
UCD18854
Damasonium californicum
Vernal Pool Team 2001; Carol Witham and Jennifer Buck
2001-4-30
162
Colusa
2 mi. south of the town of Colusa along Hwy 20, east of Hwy 20 and the Colusa Airport, Dolan Ranch site, pool # DOL001, UTMs: 10S0587786; 4336302.
Comment
POM208489
Damasonium californicum
H. M. Hall
1916-8-10
10265
Colusa
Sacramento Valley.
Comment
RSA91938
Damasonium californicum
Beecher Crampton
1953-4-29
1148
Colusa
7 miles E of Maxwell.
Comment
JEPS75727
Danthonia californica
L. R. Heckard
1974-9-9
3863
Colusa
around spring and small stream just ne rocky promontory southeast of Foutch Camp; Snow Mt.
1798
Comment
CHSC105487
Danthonia californica var. californica
B. Castro; L. P. Janeway
1999-7-5
1015
Colusa
Ca. 11 air mi SSW of Stonyford, 5 mi NW of Indian Valley Reservoir, just N of Colusa/Lake Co line, at Bear Wallow Spring. NNW-facing slope W of Lovelady Ridge Rd ca 0.5 mi N of its jcn with USFS Rd 16N06, 0.5 mi NE of Pacific Point.
1045
Comment
CHSC106228
Danthonia californica var. californica
B. Castro; L. P. Janeway
2001-6-3
1253
Colusa
Inner North Coast Ranges. Spring near head of Doyle Canyon on east side of Walker Ridge, about 1.7 mi (air) south of Bartlett Springs Road.
798
Comment
JEPS95650
Datisca glomerata
Vernon H. Oswald and L. Ahart
1999-6-22
9787
Colusa
2.2 mi west of Stonyford-Lodoga Road on County Road 42 paralleling Little Stony Creek: T17N R6W Sect. 30, ca. 1400 ft, chaparral, serpentine substrate. Herbaceous perennial ca. 1 m tall on the rocky bank of Little Stony Creek.
426
Comment
RSA724964
Datisca glomerata
L. Ahart
2006-8-9
13146
Colusa
North side and just east of the bridge across Stony Creek, just north of Stonyford
348
Comment
UCD58171
Datisca glomerata
Gordon Harrington
2007-5-31
61
Colusa
BLM Payne Ranch. Lands to the SW of the intersection of Hwy 16 and Hwy 20. Along Thompson Creek, approximately 1 mile downstream from Road Kill Cafe.
336
Comment
UCR257972
Datisca glomerata
Gordon Harrington
2007-5-31
061
Colusa
BLM Payne Ranceh. Lands to the southwest of the intersection of Hwy 16 and Hwy 20. Along Thompson Creek, c. 1 mi downstream from Road Kill Cafe
337
Comment
JEPS120797
Datura stramonium var. tatula
Lowell Ahart
2013-10-1
19083
Colusa
Strand of East Park Reservoir, about 2.5 air miles SE of Stonyford, about 2.5 miles NW of Lodoga, about 10 air miles NW of Sites.
Comment
RSA724817
Datura wrightii
L. Ahart
2006-8-22
13205
Colusa
At the intersection of Sites Lodoga Road and a dirt road to Elk Creek, about 1.5 miles (air) east of East Park Reservoir, about 4.5 miles (air) northeast of Lodoga.
546
Comment
POM174571
Daucus pusillus
Roxana S. Ferris
1926-4-23
6587
Colusa
2 miles from Stony Ford.
Comment
UCR254940
Delphinium
Greg de Nevers
1995-5-27
10732
Colusa
Near Lodoga
370
Comment
JEPS80053
Delphinium antoninum
L. R. Heckard and J. Hickman
1979-6-15
5053
Colusa
ne slope West Peak ridge (cirque between peaks); Snow Mt.
1981
Comment
JEPS80112
Delphinium antoninum
L. R. Heckard with J. Hickman
1980-7-1
5271
Colusa
cirque between West Peak and East Peak ((ca 10 mi w of Stonyford)); Snow Mt.
1950
Comment
CDA15469
Delphinium hesperium subsp. pallescens
G. F. Hrusa, T. D. Wilfred
1998-6-19
14606
Colusa
North Coast Ranges; Scattered perennial on steep slope within chaparral above upper Little Stony Creek. Goat Mtn. Rd. ~ 1.5 km. W of of campground. Non-serpentine. Flowers blue, other plants nearby range to light blue and pinkish. Crown attachment firm.
Comment
CHSC83252
Delphinium hesperium subsp. pallescens
Roman Gaukin
1958-5-4
Colusa
Bear Valley.
Comment
CHSC86969
Delphinium hesperium subsp. pallescens
B. Castro
2003-5-14
1434
Colusa
Vicinity of Logan Ridge, Sulphur Gap and Lurline Creek.
158
Comment
CHSC89286
Delphinium hesperium subsp. pallescens
G. F. Hrusa
1998-6-19
14606
Colusa
Northern California. North Coast Ranges. Above Little Stony Creek. Goat Mtn. Rd. +- 1.5 km. W of campground. UTM: 10 S, 05356 N, 43478 E.
485
Comment
HSC45441
Delphinium hesperium subsp. pallescens
M. Alcasas
1978-4-23
58
Colusa
Bartlett Springs Rd., 0.5 mi. from junction with Bear Valley Rd
457
Comment
SBBG2159
Delphinium hesperium subsp. pallescens
H. and M. Dearing
1933-5-24
399
Colusa
20 mi W of Williams
Comment
HSC25000
Delphinium nudicaule
M. Dole
1963-4-15
60
Colusa
7 mi. S of junction of Hwy. 16 and Hwy 20 on Hwy. 16
Comment
RSA232955
Delphinium nudicaule
D. A. Young
1969-5-4
321
Colusa
10 miles W of Wilbur Springs, along Hwy 16.
610
Comment
HSC24968
Delphinium patens
M. Dole
1963-4-15
30
Colusa
6 mi. S of the junction of Hwys. 16 and 20 on Hwy. 16
Comment
HSC72154
Delphinium patens
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9567
Colusa
Bear Valley Rd., 2.1 mi. from its junction with Hwy. 20
366
Comment
POM149761
Delphinium patens
Roxana S. Ferris
1917-4-14
550
Colusa
7 miles W of Arbuckle, Arbuckle - Rumsey Road
Comment
CHSC35564
Delphinium patens subsp. patens
J. P. Smith; Tom Nelson, Jane Nelson
1978-4-2
9567
Colusa
Bear Valley Road, 2.1 miles from its junction with State Route 20.
365
Comment
UC1585383
Delphinium uliginosum
R. Raiche
1989-6-20
90163
Colusa
near Eaton Spring (w of Williams, n of Wilbur Springs); Walker Ridge, Deadshot Flat
710
Comment
CHSC46049
Delphinium variegatum
June McCaskill
1962-5-2
651
Colusa
Ca. 200 yards west of road; on road along Bear Creek from State Highway 20 north to Leesville, 3.6 miles north of Wilbur Springs turnoff.
Comment
UCR55542
Delphinium variegatum
June McCaskill
1962-5-2
651
Colusa
About 200 yd west of road; on road along Bear Creek from State Hwy 20 N to Leesville, 3.6 mi north of Wilbur Springs turnoff
Comment
SEINET5338169
Delphinium variegatum
M. J. Williams
1967-5-7
s.n.
Colusa
Bear Valley.
396
Comment
SEINET5338170
Delphinium variegatum
W. Roderick
1967-5-7
s.n.
Colusa
Bear Valley.
305
Comment
SEINET5718465
Delphinium variegatum
Robert A. Christison
1960-1
29
Colusa
On State Hwy 16, ca. 3 miles from Yolo-Colusa county border.
183
Comment
UCD14291
Delphinium variegatum
L. Coats
1983-4-24
12
Colusa
Colusa Co.; in the hills at the south end of Bear Valley; along Bear Valley Road, 6.3 miles south of Bartlett Springs Road;
487
Comment
UCD14297
Delphinium variegatum
Nelson Cronyn
1984-4-22
5
Colusa
Colusa Co.; 3.2 miles north of Highway 20 on Bear Valley Road;
381
Comment
UCD15287
Delphinium variegatum
Claire Warshaw
1985-4-13
7
Colusa
along Bear Valley Road, 8 miles norhtwest from intersection with highway 20;
390
Comment
UCD23390
Delphinium variegatum
Stephanie Mayer
1977-5-8
33
Colusa
Deep blue violet showy sepals with one spur, petals white tinged with violet. Dense woody shallow roots with erect herbaceous stem. Plants occurring in large numbers. Valley grassland in open field with dry clay loam. 9.5 miles north from junction with Highway 20 on Bear Valley Road.
Comment
UCD23392
Delphinium variegatum
Patrick Fox
1977-5-8
20
Colusa
Open field 9.5 miles north of Highway 20 on Bear Valley Rd.
Comment
UCD96729
Delphinium variegatum
June McCaskill
1962-5-2
651
Colusa
200 yards west of road, on road along Bear Creek from State Highway 20 north to Leesville, 3.6 miles north of Wilbur Springs turnoff.
Comment
CAS-BOT-BC16955
Delphinium variegatum subsp. variegatum
L. S. Rose
1936-4-11
1210
Colusa
Bear Creek Canyon
Comment
CHSC89827
Delphinium variegatum subsp. variegatum
B. Castro; L. Janeway
2001-5-2
1244
Colusa
Vicinity of Grapevine Creek, Antelope Creek, and Pence Mtn. In flat to undulating open grazed grassland between hills of blue oak woodland. Adjacent to dirt road paralleling N-S-trending creek.
335
Comment
UC583162
Delphinium variegatum subsp. variegatum
Lewis S. Rose
1936-4-27
36177
Colusa
hills 10 mi nw Rumsey
213
Comment
CAS-BOT-BC16954
Delphinium variegatum subsp. variegatum
L. S. Rose
1936-4-27
36177
Colusa
10 mi. NW of Rumsey
213
Comment
HSC96712
Delphinium variegatum subsp. variegatum
Kay Izlar
2001-4-21
5
Colusa
Bear Valley Rd. off Hwy. 20
415
Comment
UCD14329
Delphinium variegatum subsp. variegatum
Kathi A. Zurakowski
1984-4-21
Colusa
Colusa Co.; Bear Valley, 9.2 miles north of Wilbur Springs turnoff, on the east side of the road
381
Comment
CHSC107972
Deschampsia danthonioides
B. Castro; Robin Carter, Jessica Boyt
2011-4-25
1855
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; ca 5 air mi NW of Maxwell, 0.8 mi southeast of Funks Reservoir and 0.3 mi northeast of Tehama-Colusa Canal. Towards north end of vernally moist swale which extends northeast of large +- saline/alkaline wetland/marsh, in drying vernapool bottom.
49
Comment
HSC9599
Deschampsia danthonioides
C. B. Wolf
1928-5-8
2127
Colusa
3 mi. S of Arbuckle Rd. on the Pacific Hwy.
Comment
UC188868
Deschampsia danthonioides
Miss M. Alice King
1905-1
Colusa
near College City College City; Sacramento Valley
Comment
UCD163709
Deschampsia danthonioides
Craig Thomsen
1999-5-10
2021
Colusa
Colusa County. At confluence of Sulphur Creek and Bear Creek. About 3 miles north of Hwy 20.
Comment
UCD66526
Deschampsia danthonioides
Craig D. Thomsen
2000-4-12
2326
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on north side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection.
340
Comment
UCR212334
Deschampsia danthonioides
Craig D. Thomsen
2000-4-12
2163
Colusa
Bear Creek Botanical Management Area. Roadside shoulder of Hwy 20 (south side), 0.5 mi west of Hwy 20/16 intersection, (c. 0.3 mi. east of Hwy 20 'Vista Point').
345
Comment
SEINET10909286
Deschampsia danthonioides
Roland McKee
1918-5-1
McKee s.n.
Colusa
Princeton.
Comment
RSA756435
Deschampsia elongata
Barbara Ertter
1989-7-1
8609
Colusa
Road to Goat Mountain Lookout 1.7 miles S of Rt. M-10 (Bear Creek-Fouts Spring Road) at head of S Fork Stony Creek, ca. 12 airmiles WSW of Stonyford.
1463
Comment
UCD164163
Descurainia sophia
Craig Thomsen
2008-3-20
2719
Colusa
Payne Ranch (Bear Creek Ranch) BLM. Hwy 16 about 0.25 mile south of junction with Hwy 20.
Comment
UC1053476
Dicentra chrysantha
Rimo Bacigalupi and Arthur Holmgren
1950-4-26
3179
Colusa
just w Bear Valley (slope just w of base of grade to Indian Valley (Bartlett Mt. Road)); Inner North Coast Ranges
Comment
JEPS80436
Dichelostemma capitatum
L. R. Heckard, and J. Hickman
1980-7-1
5290
Colusa
trail from Summit Springs to Frog Pond (Colusa-Lake County boundary); Snow Mt.
91
Comment
HSC71291
Dichelostemma capitatum subsp. capitatum
Thomas W. Nelson, Jane P. Nelson
1979-4-11
4616
Colusa
Along Leesville to SR 20 cutoff 5 mi. E of Leesville
Comment
HSC72112
Dichelostemma capitatum subsp. capitatum
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9532
Colusa
Bear Valley Rd, 3 mi. from its junction with SR 20
366
Comment
UC1334721
Dichelostemma congestum
Eugene Memmler
1969-5-8
105
Colusa
between Williams and Clear Lake (Hwy 20)
152
Comment
CHSC93753
Dichelostemma volubile
Richard R. Halse
1989-5-7
3826
Colusa
Along the Leesville Road ca. 3 miles SE of Leesville.
480
Comment
UCD57620
Dichelostemma volubile
Joseph A. E. Stewart; with Plant Biology 102
2007-4-29
2
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central part of ranch. Craig Canyon. South side of unimproved road.
335
Comment
CAS-BOT-BC503139
Dichelostemma volubile
David D. Keck
1933-5-30
2400
Colusa
1 mile east of Lake County line, west of Wilbur Springs, on south slope.
Comment
CAS-BOT-BC503140
Dichelostemma volubile
David D. Keck
1933-5-30
2400
Colusa
1 mile east of Lake County line, west of Wilbur Springs, on south slope.
Comment
UCD139273
Dichelostemma volubile
Carl Pfeiffer
1978-5-6
23
Colusa
Bear Valley, Walker Ridge, 0.1 mile south of Bartlett Springs Road.
670
Comment
CHSC32197
Dieteria canescens var. shastensis
James Jokerst
1980-8-8
1084
Colusa
North Coast Ranges. Near Snow Mountain (west).
Comment
UC1100289
Digitaria ischaemum
Herbert L. Mason
1945-9-19
12722 a
Colusa
1 mi n Colusa (below causeway over Butte Sink spillway, e bank Sacramento River); e bank Sacramento River, Butte Sink spillway
Comment
POM313166
Digitaria sanguinalis
H. L. Mason
1945-9-19
12722 b
Colusa
Below causway over Butte Sink spillway, east bank of Sacramento River, 1 mile north of Colusa.
Comment
RSA725022
Digitaria sanguinalis
L. Ahart
2006-8-22
13226
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
348
Comment
SEINET199008
Diplacus layneae
Helen K. Sharsmith
1953-1
4290
Colusa
Mendocino Nat For; In metamorphic rubble of forest clearing, 5 mi beyond Trough Springs on rd to Goat Mt.
1280
Comment
CHSC107945
Distichlis spicata
B. Castro; L. Janeway
2011-5-19
1882
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; ca 1 mi southeast of Funks Reservoir and 600 ft northeast of Tehama-Colusa Canal. Large +- alkaline vernal pool/marsh. In south half of the marsh, especially its outer edges, and up into swale to the north.
49
Comment
CHSC114987
Distichlis spicata
Lowell Ahart
2015-5-5
20116
Colusa
On the north side of Maxwell-Colusa Road, about 5 1/2 miles east of Maxwell.
53
Comment
JEPS108780
Distichlis spicata
Lowell Ahart
2006-9-26
13353
Colusa
Between the deep ditch and the Delevan National Wildlife Refuge, north side of Maxwell Road, about 3 miles west of Colusa Princeton Road, about 5 1/2 miles east of Maxwell
24
Comment
JEPS118718
Distichlis spicata
B. Castro, L. P. Janeway
2011-5-19
1882
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; ca 1 mi southeast of Funks Reservoir and 600 ft northeast of Tehama-Colusa Canal. Sites 7.5' quad.
Comment
CDA32963
Distichlis spicata
Doug Barbe & Phyllis Hiatt
1979-5-2
Colusa
Williams; waste ground by Shell station.
0
Comment
UCD64465
Distichlis spicata var. stricta
Beetle
1946-6-27
4686
Colusa
Junction of Wilber Springs Rd. and State Hwy. 20.
Comment
CHSC116063
Dodecatheon hendersonii
Richard R. Halse
2014-3-25
9030
Colusa
Along the Sites-Logoda Road ca. 4.7 miles northeast of Logoda; on the west end of Grapevine Pass.
527
Comment
UCD112600
Dodecatheon hendersonii
Christopher Mallek
2008-4-17
WR2- 5
Colusa
Walker Ridge. Border of Colusa and Lake Counties.
802
Comment
UCD162980
Dodecatheon hendersonii
Craig D. Thomsen
2002-2-7
2562
Colusa
Bear Creek Botanical Management Area. Roadside shoulder of Hwy 20 (south side), about 1.2 miles west of Hwy 20/16 intersection, west end of large turnout.
345
Comment
UCR70827
Dodecatheon hendersonii
Victor Duran
1933-4-2
3378
Colusa
Stonyford
305
Comment
SEINET215100
Dodecatheon hendersonii
Laurie E. Miller
1973-4-15
15
Colusa
Walker Ridge hunting access road, 1 mile from State Highway 20.
Comment
CHSC29750
Downingia insignis
K. R. Stern
1980-6-1
6637
Colusa
Vernal pool, south central border area of Colusa National Wildlife Refuge.
45
Comment
CHSC60673
Downingia insignis
Vernon H. Oswald
1993-4-14
5264
Colusa
N side of O'Hair Rd., just E of the headquarters buildings, Colusa National Wildlife Refuge, SW of Colusa.
18
Comment
CHSC79145
Downingia insignis
B. Crampton
1953-4-29
1145
Colusa
Along the road, about 3 miles east of Maxwell.
Comment
UC1609312
Downingia insignis
Vernon H. Oswald and Lowell Ahart
1993-5-27
5428
Colusa
ca 0.5 mi nw Sites (Sites-Lodoga Rd, Sacramento Valley); Sacramento Valley
121
Comment
UC625519
Downingia insignis
Frank W. Gould
1938-4-23
295
Colusa
between Arbuckle and Williams
Comment
POM312375
Downingia insignis
H. L. Mason
1953-4-5
14506
Colusa
3 miles east of Maxwell
Comment
CHSC27583
Downingia pulchella
Timothy Spira; Robert Schlising
1978-5-13
3248
Colusa
Bear Valley, about 5 mi S of Leesville, on Bear Valley (=Wilbur Springs) Road.
Comment
POM59020
Downingia pulchella
A. A. Heller, H. E. Brown
1902-5-1
s.n.
Colusa
Near College City.
Comment
RSA261511
Downingia pulchella
L. L. Ferwerda
1968-5-4
17
Colusa
In Bear Valley, ca. 11 miles NW of State hwy 20.
409
Comment
UC2048629
Downingia pulchella
Lisa Schultheis with Ewald Weber
1995-6-3
203 -95
Colusa
Bear Valley.
Comment
UCD163881
Drymocallis glandulosa
Craig D. Thomsen
2002-3-27
2579
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.25 mile west of Hwy 20/16 instersection.
Comment
CHSC112645
Dysphania botrys
Lowell Ahart
2013-10-1
19087
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
CHSC94479
Dysphania botrys
Lowell Ahart
2006-8-9
13119
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
CHSC112622
Dysphania pumilio
Lowell Ahart
2013-10-1
19086
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
JEPS120706
Dysphania pumilio
Lowell Ahart
2013-10-1
19086
Colusa
Strand of East Park Reservoir, about 2.5 air miles SE of Stonyford, about 2.5 miles NW of Lodoga, about 10 air miles NW of Sites.
Comment
SEINET241777
Echinochloa crus-galli
Beecher Crampton
1965-7-8
7448
Colusa
4.5 miles south of Grimes
Comment
UCD32928
Echinochloa crus-galli
Beecher Crampton
1965-7-8
7448
Colusa
Colusa County, 4.5 miles south of Grimes.
Comment
UCD34847
Echinochloa crus-galli
Beecher Crampton
1963-9-9
6893
Colusa
1/4 mile E of Cortena.
Comment
UCD60931
Echinochloa crus-galli
Beecher Crampton
1963-9-9
6889
Colusa
1/4 mile E of Cortena, site of UC temporary rice experiment station 1923-1928.
Comment
UCR201570
Echinochloa crus-galli
George K. Helmkamp, E. A. Helmkamp
2008-10-14
14269
Colusa
Sacramento Valley, along CA-20, 2 miles west of Meridian
14
Comment
UCD61166
Echinochloa oryzicola var. mutica
P. B. Kennedy
1928-9-15
Colusa
Rice Station, Cortena.
Comment
CHSC84967
Echinodorus berteroi
Lowell Ahart
2003-10-23
10671
Colusa
On the east strand of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
RSA518796
Echinodorus berteroi
Barbara Ertter, E. Neese, Laura Fujii, Dawn Espindola
1989-10-21
8879
Colusa
NW side of East Park Reservoir near end of East Park Road form Stonyford.
366
Comment
CAS-BOT-BC445569
Echinodorus berteroi
Gordon H. True
1974-11-15
7840
Colusa
On Delevan Road just west of Four Mile Road, 4 mi. east of Delevan
27
Comment
UC1192122
Eclipta prostrata
Herbert L. Mason and Verne Grant
1946-8-7
12985
Colusa
8 mi n Colusa; Butte Sink
Comment
UCD131244
Eclipta prostrata
H. L. Mason
1945-9-19
12725
Colusa
1 mile N of Colusa. Below causeway over Butte Sink spillway, E bank of Sacramento River.
Comment
CAS-BOT-BC291141
Eclipta prostrata
Herbert L. Mason
1945-9-19
12725
Colusa
Below causway over Butte Sink spillway, east bank of Sacramento River, 1 mile north of Colusa
Comment
UCD18848
Eleocharis macrostachya
Vernal Pool Team 2001; Carol Witham and Jennifer Buck
2001-4-30
156
Colusa
2 mi. south of the town of Colusa along Hwy 20, east of Hwy 20 and the Colusa Airport, Dolan Ranch site, pool # DOL001, UTMs: 10S0587786; 4336302.
Comment
POM198509
Eleocharis palustris
Roxana Stinchfield
1916-7-11
453
Colusa
Colusa - Williams Road at Trough
Comment
CHSC84216
Eleocharis parishii
Lowell Ahart
2003-7-14
10382
Colusa
Along a stream, field on the south side of Highway 20, about 2 miles southwest of the intersection of Highway 20 and Bear Valley Road, about 21 miles (by road) southwest of Williams.
520
Comment
UCR198135
Eleocharis parishii
Ellen Dean, Gordon Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3904
Colusa
Payne Ranch (owned by BLM), lands to the southwest of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek, c. 1.0 mi southwest of parking lot
390
Comment
JEPS80181
Elymus elymoides subsp. elymoides
L. R. Heckard with J. Hickman
1980-7-3
5333
Colusa
just w Summit Springs (ca 10 mi w of Stonyford, sw Snow Mt., Colusa-Lake Co. boundary); Snow Mt.
1548
Comment
UCD82486
Elymus glaucus
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5673
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
869
Comment
JEPS75758
Elymus glaucus subsp. glaucus
L. R. Heckard and R. Bacigalupi
1976-9-6
4441
Colusa
just e Fouts Camp; Snow Mtn.
1859
Comment
UCD72393
Elymus glaucus subsp. glaucus
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5119
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Southwestern part of ranch, upslope of confluence of Bear and Cache Creeks. Along old hunting camp road southeast (downslope) of junction with ridge trail.
384
Comment
CAS-BOT-BC228536
Elymus multisetus
A. A. Heller
1916-6-6
12357
Colusa
Coast Range on the grade about 3 miles west of Leesville
Comment
CAS-BOT-BC228537
Elymus multisetus
A. A. Heller
1916-6-6
12357
Colusa
Grade about 3 miles west of Leesville
Comment
UCD67001
Elymus multisetus
Craig D. Thomsen
2008-5-23
2738
Colusa
BLM Payne Ranch. 0.5 mile south of Hwy 20 (south of Destanella Flat), about 2.5 miles west of Hwy 16.
542
Comment
JEPS477
Elymus trachycaulus
W. L. Jepson
1938-6-9
18955
Colusa
w slope of mts. between Indian Valley (Lake Co.) and Bear Valley (Colusa County)
579
Comment
UCR257974
Elymus trachycaulus
Ellen Dean, Craig D. Thomsen, Gordon Harrington, R. Wilmarth, R. Wenk
2010-6-2
6067
Colusa
On Lake County border. Walker Ridge, along Walker Ridge Road, Buck Flat
873
Comment
CHSC110861
Emmenanthe penduliflora
David Isle; Rhonda Isle
2013-5-19
2041
Colusa
0.1 mi W of Maxwell Grade Summit; burned NW asp. S of Sites Lodoga Road. 7/12 Sites Fire Area. 10S 0546355E 4355688N.
548
Comment
CHSC112237
Emmenanthe penduliflora var. penduliflora
Lowell Ahart
2013-5-1
18686
Colusa
Inner North Coast Ranges. Near a small drainage, north of the of the wash and State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
CHSC60744
Emmenanthe penduliflora var. penduliflora
Vernon H. Oswald; Lowell Ahart
1993-5-27
5431
Colusa
Sites-Lodoga Rd. ca 0.4 mi W of Grapevine Pass (4.6 road mi E of Lodoga). In loose mudstone along the road.
481
Comment
JEPS110405
Epilobium brachycarpum
Lowell Ahart
2006-8-22
13218
Colusa
South side of Stony Creek, about 100 yards west of the bridge across Stony Creek, just north of Stonyford
349
Comment
UCD105289
Epilobium brachycarpum
C. F. Dunshee
1922-7-28
22
Colusa
Cortina.
Comment
JEPS75838
Epilobium canum subsp. latifolium
L. R. Heckard
1974-9-11
3954
Colusa
along Summit Springs trail Snow Mt.; , Summit Springs trail
1737
Comment
CHSC71440
Epilobium densiflorum
Vernon H. Oswald; Lowell Ahart
1998-7-15
9303
Colusa
West side of county on Walker Ridge Rd. 8.2 mi south of Bartlett Springs Rd., 6.3 mi north of Hwy. 20. In a meadow.
792
Comment
JEPS80388
Epilobium densiflorum
L. R. Heckard and J. Hickman
1981-6-22
5621
Colusa
big meadow along creek Snow Mt., Dark Hollow Creek
1889
Comment
SBBG119942
Epilobium densiflorum
L. Ahart
2006-8-9
13140
Colusa
N side and under the bridge across Stony Crk, just N of Stonyford
347
Comment
UCD82627
Epilobium foliosum
Craig Thomsen; G. Harrington
2009-5-12
2898
Colusa
Colusa County on Walker Ridge: from spur road about 1/2 mile east of Walker Ridge Road, en route to Eaton Springs.
813
Comment
UC980843
Epilobium hallianum
Kenneth Bradshaw
1953-9-9
Colusa
near Board Camp Ridge (w Colusa Co.); Mendocino National Forest, Summit Valley
1676
Comment
CHSC112253
Epilobium minutum
Lowell Ahart; John Dittes, Josephine Guardino
2013-4-26
18649
Colusa
Inner North Coast Range. On the north side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
CHSC27709
Epilobium minutum
Tim Spira; Robert A. Schlising
1978-5-13
3232
Colusa
Just E of Lake County line, along Hwy 20.
Comment
CHSC70986
Epilobium minutum
Vernon Oswald; Lowell Ahart
1998-5-7
9005
Colusa
Bartlett Springs Rd. 2.1 mi west of Bear Valley Rd., 0.8 mi east of Sawtelle Valley and Grapevine Flat roads.
524
Comment
CHSC94885
Epilobium minutum
Lowell Ahart
2006-6-11
12679
Colusa
On the east side of an off road trail (Trail 30), about 100 yards south of Fouts Road, about 5 miles (by road) west of Stonyford.
613
Comment
UCD81733
Epilobium minutum
Ellen Dean; K. Mawdsley,G. Harrington,R. Wilmarth,B. Rice,E. Salvia
2009-5-27
5735
Colusa
Walker Ridge. Along Walker Ridge Road. Til Jones Spring area on W side of road, ca. 6.5 road mi N of junction with Hwy 20. W side of road.
864
Comment
POM256523
Epilobium minutum
E. K. Crum
1938-5-8
2026
Colusa
3 miles north of Leesville.
Comment
CHSC101430
Epilobium nivium
David Isle
1990-6-6
1527
Colusa
On Lower Summit Valley Rock Outcrop W of Rd 17N10.
1682
Comment
CHSC106240
Epipactis gigantea
B. Castro; L. P. Janeway
2001-6-3
1257
Colusa
Inner North Coast Ranges. Spring at Grapevine flat, on top of Walker Ridge about 0.5 mi E of Baldy Mountain. East-facing slope/bench with large springy/meadowy area. At upper edges of meadow.
880
Comment
CAS-BOT-BC58020
Equisetum
Roxana S. Ferris
1926-4-21
6312
Colusa
Near Sycamore.
Comment
CHSC94421
Equisetum arvense
Lowell Ahart
2006-8-22
13211
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
RSA724896
Equisetum laevigatum
L. Ahart
2006-8-22
13210
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
348
Comment
CAS-BOT-BC213552
Eragrostis hypnoides
Roxana Stinchfield
1916-7-8
383
Colusa
In bed of Sycamore Slough.
Comment
CHSC113050
Eragrostis hypnoides
Lowell Ahart
2013-10-1
19077
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
RSA0105552
Eragrostis hypnoides
Lowell Ahart
2013-10-1
19077
Colusa
Inner North Coast Range. East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
UC1100248
Eragrostis hypnoides
Herbert L. Mason
1945-9-19
12717
Colusa
1 mi above Colusa (below causeway over Butte Sink spillway); e bank of Sacramento River, Butte Sink spillway
Comment
UC1950146
Eragrostis hypnoides
Barbara Ertter with Elizabeth Neese, Laura Fujii, Dawn Espindola
1989-10-21
8878
Colusa
NW side of East Park Reservoir near end of East Park Road from Stonyford
Comment
CHSC115631
Eragrostis hypnoides
David Isle; Rhonda Isle
2014-9-27
2143
Colusa
Northern Sacramento Valley Foothills: W side East Park Reservoir, ~0.3 mi S of boatlaunch, ~ 100 yds E of normal lake edge in muddy clay soil. (Gilmore Peak California: 10S -0541629E, 4355225N).
353
Comment
CHSC94401
Eragrostis pectinacea var. pectinacea
Lowell Ahart
2006-8-9
13164
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
CHSC94425
Eragrostis pectinacea var. pectinacea
Lowell Ahart
2006-8-22
13206
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
UC1212582
Eriastrum brandegeeae
Francia Chisaki and Helen Sharsmith
1959-5-27
1332
Colusa
at Mill Creek crossing on road out of Red Bridge Camp Inner North Coast Ranges
Comment
CAS-BOT-BC515192
Eriastrum tracyi
Volney Rattan
1881-6-1
s.n.
Colusa
Stony Creek. Coast Mountains north of San Francisco Bay
Comment
CDA11387
Ericameria linearifolia
G. F. Hrusa, K. van Katwyk
1995-4-22
12107
Colusa
Inner North Coast Ranges; Walker Ridge Road approximately 3 miles N of Highway 20.
Comment
RSA293106
Ericameria linearifolia
Thomas W. Nelson, Jane P. Nelson
1978-4-1
9527
Colusa
Walker Ridge Road, 3.2 miles from its junction with State Route 20
Comment
RSA671050
Ericameria linearifolia
G. Fred Hrusa
1995-4-2
12107
Colusa
On Walker Ridge Road approx. 3 miles N of Highway 20
950
Comment
CAS-BOT-BC298294
Ericameria nauseosa var. speciosa
Peter H. Raven
1959-9-11
14416
Colusa
0.5 mile S of Snow Mt
1920
Comment
UCD131766
Erigeron canadensis
P. B. Kennedy
30-31 May 1922
s.n.
Colusa
near Cortina.
Comment
CHSC32217
Erigeron petrophilus var. petrophilus
James Jokerst
1980-8-6
1056
Colusa
North Coast Ranges. Near Snow Mountain (WEST).
Comment Read comments Jul 16 2007
CAS-BOT-BC216002
Eriodictyon californicum
Roxana S. Ferris
1926-4-23
6431 A
Colusa
Near summit of grade on Williams - Stonyford Road
Comment
CAS-BOT-BC216003
Eriodictyon californicum
L. Constance
1939-5-14
2488
Colusa
Above Middle Fork of Stony Creek 2.5 miles east of Bonnie View, Inner North Coast Ranges
518
Comment
RSA23083
Eriodictyon californicum
Lincoln Constance
1939-5-14
2488
Colusa
Above Middle Fork of Stony creek 2.5 miles E of Bonnie View, Inner N Coast Ranges
518
Comment
RSA401486B
Eriodictyon californicum
Carolyn Sanford
1977-4-24
s.n.
Colusa
Dry hillsides along Walker Ridge Road above Barrel Springs Campground.
701
Comment Read comments Jul 31 2014
UCD72480
Eriodictyon californicum
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3814
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. West side of Bear Creek, across from BLM parking lot that is located at south end of bridge.
249
Comment
RSA60348
Eriodictyon californicum
G. R. Campbell
1948-6-18
649
Colusa
2 miles south of Wilbur Springs.
Comment
CAS-BOT-BC242576
Eriogonum dasyanthemum
R. F. Hoover
1968-5-27
11100
Colusa
Bear Creek Canyon n. of Highway 20 (near Wilbur Springs)
Comment
CHSC77614
Eriogonum dasyanthemum
Heidi West; Caroline Warren
1998-5-26
Colusa
Vicinity of Antelope Valley, Huffmaster Road, and Sites.
167
Comment
CHSC92835
Eriogonum dasyanthemum
D. Isle
2000-6-7
1245
Colusa
Mendocino National Forest -- North Coast Ranges Little Stony Creek Watershed. Junction of Frenzel Creek with Little Stony Creek Road.
426
Comment
UCR212378
Eriogonum dasyanthemum
Ellen Dean, Craig D. Thomsen, N. Voegtly, J. Alderson, Gordon Harrington
2008-3-30
4677
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Slopes to the NW of Eula Canyon and west of Cowboy Camp on the west side of Bear Creek
513
Comment
UCR44922
Eriogonum dasyanthemum
L. F. LaPre
1986-5-30
s.n.
Colusa
1.5 mi west of Mendocino National Forest Boundary on Stony Creek Rd [c. 4 mi. west of Stonyford]
671
Comment
CAS-BOT-BC242577
Eriogonum dasyanthemum
Ella D. Cantelow
1957-5-31
s.n.
Colusa
4 mi. west of Leesville on grade above Bear Valley
Comment
CDA22488
Eriogonum dasyanthemum
T. C. Fuller
1958-5-27
Colusa
Highway 20, 1.5 miles west of junction with Highway 16.
0
Comment
CAS-BOT-BC250371
Eriogonum gracile
Roxana Stinchfield
1916-6-18
307
Colusa
Near College City
Comment
UCSB1430
Eriogonum gracile
Keator, Glenn
1958-6-16
Colusa
just east of Colusa-Lake County line; on road from Lower Lake to Sacramento Valley
Comment
UC201699
Eriogonum hirtiflorum
Volney Rattan
June, 1884
Colusa
above Stony Creek
Comment
RSA96804
Eriogonum luteolum
Percy C. Everett, E. K. Balls
1954-10-17
20336
Colusa
West slope Goat Mt., 0.9 mile SW from Linger Longer campsite; road from Stonyford to Upper Lake
1829
Comment
CHSC32225
Eriogonum strictum var. greenei
James Jokerst
1980-8-20
1099
Colusa
North Coast Ranges. Near Solomon Peak.
Comment Read comments Aug 20 2014
CAS-BOT-BC267412
Eriogonum tripodum
Beecher Crampton
1963-6-11
6850
Colusa
Ca. 2 miles south of Lodoga
Comment
CAS-BOT-BC267413
Eriogonum tripodum
G. L. Stebbins
1972-6-25
9001
Colusa
East side of Black Diamond Ridge, 5 miles northwest of Stonyford
579
Comment
UC1299713
Eriogonum tripodum
Freed W. Hoffman
1947-6-19
1618
Colusa
between Ladoga and Cook Springs
Comment
JEPS80278
Eriogonum umbellatum var. bahiiforme
L. R. Heckard, and J. Hickman
1980-9-16
5464
Colusa
n slope of West Peak, Snow Mt. Snow Mt., West Peak
2042
Comment
CHSC32219
Eriogonum umbellatum var. smallianum
James Jokerst
1980-8-6
1054
Colusa
North Coast Ranges. Near Snow Mountain (west). Ridge top.
Comment
CHSC91046
Eriophyllum lanatum
D. Isle
2003-6-12
371
Colusa
Mendocino National Forest--North Coast Ranges. Little Stony Creek Watershed. GPS 10S 524888E 4345370N, ridgetop.
1816
Comment
SEINET7096744
Eriophyllum lanatum
A. G. Vestal
1955-4-5
3673
Colusa
Steep south of facing bank ca. 1/3 mile into Colusa National Wildlife Refuge on Route 20.NAD27, 39? deg. 09' 09ao, -122?_ 11ao (converted to WGS84 decimal degrees) UTM Zone 10, 570301mE, 4333799mN.
Comment
UCD57823
Eriophyllum lanatum
Gordon Harrington
2007-4-17
34
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Destanella Flat, just south of Hwy 20, approximately 3.4 road miles west of the Hwy 16 intersection.
526
Comment
CAS-BOT-BC308095
Eriophyllum lanatum var. achilleoides
Pat Daly; Rudy Galindo
1988-4-16
54
Colusa
3.7 miles west on Goat Mountain Road off of Lodoga-Stonyford Road to Digger Pine Campground
451
Comment
CAS-BOT-BC308097
Eriophyllum lanatum var. achilleoides
A. A. Heller
1916-6-6
12353
Colusa
Coast Range on the grade about 3 miles west of Leesville
Comment
CDA15503
Eriophyllum lanatum var. achilleoides
G. F. Hrusa, WTD
1998-6-19
14640
Colusa
North Coast Ranges; Trough Springs ridge, immed. above (overlooking settlement) Fouts Springs.
Comment
RSA273361
Eriophyllum lanatum var. achilleoides
J. P. Smith, Tom Nelson
1976-4-14
8578
Colusa
Mendocino National Forest, confluence of Stony Creek and North Fork of Stony Creek
427
Comment
CAS-BOT-BC308096
Eriophyllum lanatum var. achilleoides
Ella D. Cantelow
1957-5-31
s.n.
Colusa
West edge of Bear Valley along road to Bartlett Springs
Comment
JEPS34737
Eriophyllum lanatum var. achilleoides
W. L. Jepson
1938-6-9
18962
Colusa
mountains between Indian Valley, Lake County, and Bear Valley, Colusa County (Complexion Canyon, hillslope); Complexion Canyon
579
Comment
UC1718073
Eriophyllum lanatum var. achilleoides
John S. Mooring
1968-5-24
2066
Colusa
Road from Leesville to Bartlett Springs, at lake-Colusa line
Comment
CHSC8130
Eriophyllum lanatum var. grandiflorum
J. G. Moore
1969-4-12
64
Colusa
North side of Hwy. 20 on hillside 15 mi. w of Williams.
106
Comment
CDA28422
Erodium brachycarpum
Richard R. Halse
2007-3-22
7107
Colusa
Williams; by junction of 5th Street and B Street.
Comment
UCD66935
Erodium brachycarpum
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5085
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western side of ranch along trail that follows the border of Lake and Colusa counties. Dunsfield Flat.
628
Comment
UCD57557
Erodium cicutarium
Cindy Yip; with Plant Biology 102
2007-4-29
5
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Meadow on the west side of State Route 16, ca. 2 road miles south of intersection with State Route 20.
304
Comment
UCD64280
Erodium cicutarium
Craig D. Thomsen
2000-3-31
2083
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UC73462
Erodium macrophyllum
Miss M. Alice King
1905-1
Colusa
near College City; Sacramento Valley
Comment
CHSC84964
Eryngium aristulatum
Lowell Ahart
2003-10-23
10662
Colusa
On the east strand of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
CHSC91560
Eryngium aristulatum
D. Isle
1995-7-12
397
Colusa
Mendocino National Forest--North Coast Ranges. Bear Creek Watershed. BLM land S off Cook Springs.
548
Comment
UCD82579
Eryngium aristulatum
Craig Thomsen
2008-6-12
2769
Colusa
Bear Creek (formerly Payne) Ranch. South side of Hwy 20, ca. 0.25 mi W of Hwy 16. West and SW of the corral that is located at the junction of Hwy 16 and 20.
Comment
UC1487274
Eryngium aristulatum var. aristulatum
Yusuf Sheikh and Lincoln Constance
1973-5-12
542
Colusa
s. Leesville (on Bear Valley Rd. toward Clear Lake, 1 mi. s. of Brim Rd., 13.3 mi. n. of State Hwy. 20)
Comment
UC727670
Eryngium castrense
Milo S. Baker
1946-9-4
11611
Colusa
near locked gate of Colusa Gun Club Butte Sink
Comment
UCD38844
Eryngium castrense
Beecher Crampton
1958-6-26
4976
Colusa
along Grieve road, just northeast Hershey R.R. siding, 5.5 miles south of College City.
Comment
CAS-BOT-BC40751
Erysimum capitatum
Roxana S. Ferris
1917-4-14
576
Colusa
Arbuckle-Rumsey Road. Foothills 7 miles west of Arbuckle.
Comment
CDA12013
Erysimum capitatum
G. F. Hrusa
1990-4-8
7665
Colusa
North Coast Biodiversity Arena; Road into Bear Valley from the S, passing Wilbur Springs, and originating at Hwy. 20.
Comment
SEINET233343
Erysimum capitatum
Kathleen R. Robson
1981-5-2
33
Colusa
Mendocino National Forest ; Colusa co.: From Stonyford take Fouts Springs Road 12mi W past Fouts Springs to Letts Lake
1219
Comment
CHSC112229
Erysimum cheiranthoides
Lowell Ahart
2013-5-1
18665
Colusa
On the east side of Bear Valley Road, about 2 1/2 miles (by road) northwest of the intersection of State Highway 20 and Bear Valley Road.
533
Comment
CHSC1751
Erythranthe bicolor
L. Oliver
1935-5-3
Colusa
Comment
CHSC27633
Erythranthe nudata
Tim Spira; Rober Schlising
1978-5-13
3236
Colusa
Just E of Lake County line, along Hwy 20.
Comment
CHSC86121
Eschscholzia caespitosa
Jenny Marr; Caroline Warren
1998-5-4
Colusa
Vicinity of Sites, Stone Corral Creek, and Antelope Valley.
121
Comment
UCR198142
Eschscholzia caespitosa
Ellen Dean, C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3671
Colusa
BLM Payne Ranch, lands to the southwest of junction of Hwy 20 and Hwy 16. Thomposon Canyon, near juncture with Craig Canyon, above Thompson Creek
366
Comment
CAS-BOT-BC5882
Eschscholzia caespitosa
Townsend Stith Brandegee
1889-4-1
s.n.
Colusa
unspecified
Comment
UC630427
Eschscholzia californica
Annetta Carter
1938-5-8
1392
Colusa
5.5 mi s Leesville (on Wilbur Springs rd); Inner North Coast Range, Bear Valley
426
Comment
CAS-BOT-BC402978
Eschscholzia californica
Roxana S. Ferris
1917-4-14
603
Colusa
3 mi west of Arbuckle, Arbuckle - Rumsey Road
Comment
CAS-BOT-BC5885
Eschscholzia californica
Townsend Stith Brandegee
1889-4-1
s.n.
Colusa
unspecified
Comment
CAS-BOT-BC5887
Eschscholzia californica var. crocea
Townsend Stith Brandegee
1889-4-1
s.n.
Colusa
unspecified
Comment
CHSC42185
Eschscholzia lobbii
S. A. Zaitz
1986-4-5
11
Colusa
Ca. 0.3 mi w of jct. of Hwys 20 and 16, s side of Bear Ck, ca. 18 mi sw of Williams.
321
Comment
HSC48045
Eschscholzia lobbii
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3937
Colusa
Along Bear Valley Rd., 2.5 mi. from junction with Hwy. 20
366
Comment
UC71635
Eschscholzia lobbii
Miss Alice King
1905-1
Colusa
College City
Comment
SDSU6059
Eucrypta chrysanthemifolia
D. F Howe
1962-5-19
3284
Colusa
13 miles west of Williams on #2.
213
Comment
CHSC115331
Euphorbia crenulata
Lowell Ahart
2015-4-10
20011
Colusa
In a small meadow, on the south side of Brim Road, about 2 miles west of the intersection of Bear Valley Road and Brim Road, about 17 miles (air) west of Williams.
500
Comment
UCD66704
Euphorbia crenulata
Craig D. Thomsen
2001-4-12
2454
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
UCD55467
Euphorbia serpillifolia
Ellen Dean; Gordon Harrington
2006-10-6
3292
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Ranch can be accessed via north gate which is located on a road on the S side of State Route 20, 2.3 road miles W of jct of State Routes 16 and 20. In Thompson Canyon, along dirt road that parallels ephemeral drainage.
362
Comment
CHSC59969
Euphorbia spathulata
J. M. Tucker
1978-5-6
4407
Colusa
In field on east side of Bear Valley Road, 10.6 miles (by road) north of junction with State Highway 20. Valley floor of Bear Valley.
381
Comment
CHSC79501
Euphorbia spathulata
B. Castro; L. P. Janeway
2000-5-2
1110
Colusa
Vicinity of Sites, Sites-Lodoga Rd, and Grapevine Creek.
234
Comment
UCD64248
Euphorbia spathulata
Craig D. Thomsen
2000-3-31
2050
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UCD65626
Euphorbia spathulata
Craig D. Thomsen
2000-4-12
2128 -a
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
UCD142493
Euphorbia spathulata
J. M. Tucker
1978-5-6
4407
Colusa
On east side of Bear Valley Road, Bear Valley. 10.6 miles (by road) north of junction with State Highway 20.
365
Comment
UCD61475
Extriplex joaquinana
Ellen Dean; G. Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3896
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek. Approximately 1/4 mile SW of parking lot.
399
Comment
UCD63021
Extriplex joaquinana
Ellen Dean; C. Thomsen, N. Voegtly, J. Alderson, G. Harrington
2008-3-30
4673
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Slopes to the northwest of Eula Canyon and west of Cowboy Camp on the west side of Bear Creek.
451
Comment
UCD63038
Extriplex joaquinana
Ellen Dean; Marjorie Phan and Gerald Dickinson
2008-4-27
4884
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Along unnamed tributary of Bear Creek.
376
Comment
UCD82584
Extriplex joaquinana
Craig Thomsen; J. Wiegand, S. Harrison, G. Harrington, A. Fulks
2008-6-12
2764
Colusa
Walker Ridge, near Elgin Mine on Lucientes property.
655
Comment
UCD82632
Festuca arundinacea
Jack Alderson
2009-8-6
28
Colusa
BLM Bear Creek (formerly Payne) Ranch. Lands to the SW of junction of Hwys 16 and 20. Northeastern corner of ranch, just S of Hwy 20.
313
Comment
JEPS75748
Festuca californica
L. R. Heckard and R. Bacigalupi
1976-9-6
4423
Colusa
above Summit Springs (along trail to Fouts Camp, Colusa-Lake County line); Snow Mt.
1645
Comment
JEPS80395
Festuca rubra
L. R. Heckard and J. Hickman
1981-6-22
5628
Colusa
s of Dark Hollow Trail; Snow Mt.
1981
Comment
CAS-BOT-BC77676
Ficus carica
J. H. Thomas
1960-8-30
8867
Colusa
Edge of College City
Comment
CAS-BOT-BC77677
Ficus carica
J. H. Thomas
1960-8-30
8867
Colusa
Edge of College City
Comment
UCR227906
Forestiera pubescens
Ellen Dean, J. Alderson, N. Voegtly, Craig D. Thomsen
2007-5-12
3808
Colusa
BLM Payne Ranch, lands to the Southwest of the junction of Hwys 16 and 20, area of ranch west of Hwy 16, near bridge that spans Bear Creek, c. 4.5 road miles south of junction of Hwy 16/20. Bank of Bear Creek near south end of bridge, east side of creek
253
Comment
CAS-BOT-BC63016
Frangula californica subsp. crassifolia
C. B. Wolf; B. D. Stark
1933-9-25
5506
Colusa
Inner n. coast range, w. side of Bear Valley, near Mitchell Ranch House. Type Locality.
304
Comment
JEPS118616
Frangula californica subsp. crassifolia
B. Castro, L. P. Janeway
1999-7-5
1014
Colusa
Ca 11 air mi SSW of Stonyford, 5 mi NW of Indian Valley Reservoir, just N of Colusa/Lake Co line, at Bear Wallow Spring. In serpentine substrate on NNW-facing slope W of Lovelady Ridge Road ca 0.5 mi N of its junction with USFS Rd 16N06, 0.5 mi NE of Pacific Point. Hough Springs 7.5' quad.
Comment
UCD112807
Frangula californica subsp. crassifolia
Beecher Crampton
1958-5-19
4818
Colusa
along Little Stony Creek, 4 - 5 miles west of Lodoga.
Comment
CAS-BOT-BC62916
Frangula californica subsp. tomentella
Roxana Stinchfield
1916-7-10
478
Colusa
Oak Grove - Phillip's Ranch.
Comment
CAS-BOT-BC62917
Frangula californica subsp. tomentella
C. Hart Merriam
1923-5-9
s.n.
Colusa
Stony Ford.
Comment
HSC48172
Frangula californica subsp. tomentella
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3936
Colusa
Along Bear Valley Rd., 2.5 mi. from junction with Hwy. 20
366
Comment
UCD163874
Frangula californica subsp. tomentella
Craig D. Thomsen
2000-5-11
2395
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 1 mile west of Hwy 20/16 instersection.
Comment
UCD83758
Frangula californica subsp. tomentella
Ellen Dean; G. Harrington, K. Mawdsley, J. Shepard
2010-5-1
5954
Colusa
Colusa County. Walker Ridge. Along Walker Ridge Road, Buck Flat.
875
Comment
POM135670
Frankenia salina
Roxana Stinchfield
1916-7-11
120
Colusa
Colusa - Williams Road at 'Trough'
Comment
CAS-BOT-BC223367
Fraxinus dipetala
Lester Rowntree
1936-4-11
s.n.
Colusa
Edge of Bear Creek
Comment
CHSC36175
Fraxinus dipetala
Robert A. Schlising
1978-4-10
3218
Colusa
Grapevine Pass, on Sites--Lodoga Road.
562
Comment
CHSC76343
Fraxinus dipetala
L. P. Janeway; B. Castro
1999-7-5
6500
Colusa
Along Goat Mountain Road on south side of Little Stony Creek about 0.2 mi west of Trout Creek. Steep north facing shrubby slope.
530
Comment
CAS-BOT-BC383131
Fraxinus latifolia
Andrew Townesmith; Karen M. Meyer
2007-8-7
911
Colusa
Mendocino National Forest, Grindstone Ranger District. Big Spring Picnic area on Lett's Lake, off Forest Service road 17N02, 3.2 miles SW from intersection with Forest Service route M10
1371
Comment
UC1613366
Fritillaria
Charles M. Belshaw
April 1937
2863
Colusa
vicinity of Cook's Spring (Devil's Ridge); Devil's Ridge
Comment
RSA589939
Fritillaria
Michael A. Vincent, Robert Rhode
1996-3-30
7305
Colusa
Along Brim Road, 2.9 mi W jct Bear Valley Rd.
Comment
CHSC62852
Fritillaria affinis
Vernon H. Oswald; Lowell Ahart
1994-3-23
6013
Colusa
Frenzel Creek Research Natural Area on the S side of Little Stony Creek, in the section on the E side of Frenzel Creek, S of Stonyford.
518
Comment
UCD162981
Fritillaria affinis
Craig D. Thomsen
2002-2-7
2568
Colusa
Bear Creek Botanical Management Area. Roadside shoulder of Hwy 20 (south side), about 1.5 miles west of Hwy 20/16 intersection.
345
Comment
CHSC52363
Fritillaria pluriflora
Henricus C. Jansen
1980-3-1
Colusa
Along both sides of Lodoga-Leesville, 0.8 mi S of intersection with Stony(?) Sites Rd.
371
Comment
JEPS100637
Fritillaria pluriflora
Dean W. Taylor
1992-4-16
12400
Colusa
East Park Reservoir, ca. 0.4 mi due W from spillway into Little Stony Creek Inner North Coast Range
411
Comment
JEPS89227
Fritillaria pluriflora
W. Roderick
1964-3-22
Colusa
1/2 mi e of summit of Lake County Line (on Highway 20 (Williams-Clear Lake)); Highway 20 (Williams-Clear Lake)
304
Comment
RSA297923
Fritillaria pluriflora
W. Roderick
1968-3-10
s.n.
Colusa
On Hwy 20 (Williams-Clear Lake), 0.5 mile from Lake Co. Line
Comment
UC1479606
Fritillaria pluriflora
R. Y. B.
1965-3-14
8387
Colusa
ca. 9 - 10 mi. s. Leesville (Bear Valley Rd.)
Comment
UCR261615
Fritillaria pluriflora
Ann Howald
2003-3-11
2276
Colusa
Inner North Coast Ranges, Indian Valley, east side of East Park Reservoir, peninsula c. 2 miles north of Lodoga
365
Comment
SDSU20636
Fritillaria recurva
Sean Ryan, Michael G. Simpson
2010-6-21
56
Colusa
NW facing slope on north side of Forest Road 16N02. Approximately 0.23 miles NE of intersection with Forest Road 16N03. SW of Black Oak Campground, NNW of Goat Mountain. Mendocino National Forest.
1692
Comment
JEPS52784
Galium andrewsii subsp. andrewsii
Lauramay T. Dempster and G. L. Stebbins
1967-4-8
4356
Colusa
Bartlett Springs road 2.5 mi w Leesville (1.8 mi w of junction with Bear Valley Rd, w-facing slope)
530
Comment
UCD81217
Galium andrewsii subsp. andrewsii
Ellen Dean; K. Mawdsley, B. Rice, G. Harrington, and J. Alderson
2009-5-6
5554
Colusa
Payne Ranch, lands to the SW of the jct. of Hwys. 16 and 20. Destinella Flat area on the S side of Hwy. 20. Ridge so the south of Destanella Flat.
522
Comment
UC1229763
Galium bolanderi
Francia Chisaki and Helen K. Sharsmith
1959-5-27
1335
Colusa
at Mill Creek Crossing (road leading out of Red Bridge camp)
Comment
OBI78460
Galium bolanderi
Helen K. Sharsmith & Francia Chisaki, Francia Chisaki
1959-5-27
1335
Colusa
At Mill Crk crossing on rd leading out of Red Bridge Camp
Comment
POM11693
Galium californicum
Daniel Cleveland
1882-6-20
s.n.
Colusa
Allen Springs.
Comment
CDA15479
Galium californicum subsp. flaccidum
G. F. Hrusa, WTD
1998-6-19
14616
Colusa
North Coast Ranges; Goat Mtn. Rd. approx. 1 km. below intersection with USFS Pacific Ridge Rd. (M5).
Comment
CHSC32201
Galium grayanum
James Jokerst
1980-8-8
1079
Colusa
North Coast Ranges. Near Snow Mountain (west).
Comment
JEPS24234
Galium grayanum var. nanum
Peter H. Raven, R. Snow
1959-9-11
14411
Colusa
s shoulder Snow Mountain
2042
Comment
JEPS88931
Galium grayanum var. nanum
Milo S. Baker
1929-7-1
3516 b
Colusa
near top Snow Mt.
Comment
JEPS110109
Galium parisiense
Lowell Ahart
2006-8-9
13149
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
RSA725011
Galium parisiense
L. Ahart
2006-8-9
13149
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
348
Comment Read comments Aug 9 2017
UCD82120
Galium parisiense
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5648
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
839
Comment
UCD56687
Galium porrigens
Gordon Harrington
2007-3-25
6
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
572
Comment
UCD57343
Galium porrigens
Sergio Testa
2007-3-25
1
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
560
Comment
UCD66572
Galium porrigens var. tenue
Craig D. Thomsen
2001-5-24
2457
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
JEPS17975
Galium porrigens var. tenue
George B. Rossbach
1955-4-9
508
Colusa
Route 20; w edge of county
563
Comment
CDA12797
Garrya congdonii
G. F. Hrusa
1996-2-26
12632
Colusa
Serpentine Flora of California; above Little Stony Creek, on Goat Mtn.Rd. approx. 2.5 miles SE of Stonyford-Lodoga Rd.
Comment
JEPS11967
Garrya congdonii
Rimo Bacigalupi with G. T. Robbins
1954-6-25
4623
Colusa
on road from Indian Valley (Lake County) to Bear Valley (Colusa County) (0.5 mi e of summit (Lake - Colusa County line))
548
Comment
SBBG34146
Garrya congdonii
R. D. Slayback
1959-3-20
2
Colusa
near St Hwy 16, 6 mi NW of Rumsey
Comment
SBBG5331
Garrya congdonii
H. and M. Dearing
1939-5-12
3331 B
Colusa
near Leesville
457
Comment
POM163456
Garrya flavescens subsp. congdonii
Roxana S. Ferris
1926-4-23
6456 a
Colusa
Between Leesville and Stonyford four miles from Stonyford.
Comment
CHSC107496
Garrya veatchii
Ralph Minto
2010-1-29
1919
Colusa
Mendocino National Forest - North Coast Ranges Middle Fork Stony Creek Watershed. Fouts Springs road.
609
Comment
CHSC94472
Gastridium phleoides
Lowell Ahart
2006-8-9
13171 A
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
CHSC79788
Gilia capitata
G. F. Hrusa
1998-6-19
14611
Colusa
Above upper Little Stony Creek. Goat Mtn. Rd. ~ 1.5 km. W of campground. UTM: 10S, 05356N, 43478E.
485
Comment
UCD63100
Gilia capitata
Ellen Dean; G. Harrington, C. Thomsen, S. Harrison
2008-5-18
4931
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Unnamed drainage south of Hwy 20 between Hwy 16 and Lynch Canyon that drains to Bear Creek by passing under Hwy 20.
348
Comment
UCD64432
Gilia capitata
Craig D. Thomsen
2000-5-11
2323
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
RSA537483
Gilia capitata
Barbara Ertter
1989-7-1
8601
Colusa
Road to Goat Mt Lookout 2.2 mi S of Rt M-10 (Bear Creek, ca 12 airmiles WSW of Stonyford
1500
Comment
SEINET12278770
Gilia capitata
C. L. Abbott
1926-1
s.n.
Colusa
Colusa
Comment
CHSC94881
Gilia capitata subsp. capitata
Lowell Ahart
2006-6-11
12676
Colusa
On the east side of an off road trail (Trail 30), about 100 yards south of Fouts Road, about 5 miles (by road) west of Stonyford.
613
Comment
HSC66136
Gilia tricolor
S. Harris, B. Ferguson, M. Moble, M. Smith
1980-4-19
Colusa
Bartlett Springs Rd.
Comment
RSA293157
Gilia tricolor
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9563
Colusa
Bear Valley Road, 2.1 miles from its junction with State Route 20.
366
Comment
RSA590190
Gilia tricolor
Michael A. Vincent, Robert M. Rhode
1996-3-30
7283
Colusa
Along Bear Valley Rd. above Bear Creek, 1.4 mi. S jct. Wilbur Springs Rd.
Comment
UCD64267
Gilia tricolor
Craig D. Thomsen
2000-3-31
2065
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
SEINET5732133
Gilia tricolor
Mary Jane York
1969-1
12
Colusa
In an open valley, soil dry, Bear Valley, 9.5 miles north of State Highway 20.; Bear Valley
Comment
UCD15437
Gilia tricolor
Lisa Montang
1985-4-13
5
Colusa
California, Colusa Co.; Bear Valley, 8.6 miles north of Wilbur Springs Road and Highway 20 intersection;
390
Comment
CHSC59999
Gilia tricolor subsp. tricolor
Carole Pauls
1975-4-20
1
Colusa
Pasture. Bear Valley Road, 8.7 miles north of State Highway 20.
Comment
UC71621
Githopsis specularioides
Miss Alice King
1905-1
Colusa
College City
Comment
UCD72440
Githopsis specularioides
Kim E. Steiner
1978-4-29
196
Colusa
Walker Ridge Road; 1.5 miles N of State Hwy 20.
777
Comment
JEPS104408
Glinus lotoides
Lowell Ahart
2003-10-23
10668
Colusa
On the e strand of East Park Reservoir, ca 1/8 mi nw of Sites Lodoga Rd, ca 1 mi n of Lodoga, ca 21 mi w of Maxwell.
368
Comment
JEPS120805
Glinus lotoides
Lowell Ahart
2013-10-1
19074
Colusa
Strand of East Park Reservoir, about 2.5 air miles SE of Stonyford, about 2.5 miles NW of Lodoga, about 10 air miles NW of Sites.
Comment
UCD66923
Glinus lotoides
Craig D. Thomsen; G. Harrington
2008-7-6
2775
Colusa
BLM Payne Ranch. Lands to the SW of the jct of Hwys 20 and 16. Western edge of ranch on ridge above Cache Creek canyon. Along ridge trail.
510
Comment
CHSC115630
Glinus lotoides
David Isle; Rhonda Isle
2014-9-27
2140
Colusa
Northern Sacramento Valley Foothills: W side East Park Reservoir, ~0.3 mi S of boatlaunch, ~100 yds E of normal lake edge in muddy clay soil. (Gilmore Peak California: 10S -0541629E, 4355225N).
Comment
UCD67068
Glyceria
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5096
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western part of ranch along ridge trail at Cache Creek Canyon. Just south of junction with trail that leads east to Brophy Canyon and Thompson Creek.
494
Comment
UCD58167
Glycyrrhiza lepidota
Gordon Harrington
2007-5-15
57
Colusa
BLM Payne Ranch. Sandy north side of Cache Creek, about 1/2 mile upstream from the confluence of Cache Creek and Bear Creek.
190
Comment
UCD72477
Glycyrrhiza lepidota
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3811
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. West side of Bear Creek, across from BLM parking lot that is located at south end of bridge.
249
Comment
SEINET7042569
Gnaphalium canescens
A. G. Vestal
1938-9-1
s.n.
Colusa
Along top of trough, Springs Ridge near Foxtrap Springs. Fouts Spring quadrangle UTM Zone 10, 530960mE, 4350980mN.
Comment
CAS-BOT-BC303890
Gnaphalium palustre
Roxana Stinchfield
1916-7-9
409
Colusa
Phillips Ranch
Comment
JEPS110101
Gnaphalium palustre
Lowell Ahart
2006-8-9
13124
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
JEPS80185
Gnaphalium palustre
L. R. Heckard with J. Hickman
1980-7-3
5337
Colusa
just w of Summit Springs (sw of Snow Mt. (ca. 10 mi w of Stonyford), Colusa-Lake County boundary)
1548
Comment
UCD162346
Grindelia camporum
Chuck Hughes
2015-1-13
414
Colusa
North side of Highway 20, just east of the I-5 interchange.
20
Comment
CHSC50794
Grindelia camporum var. camporum
Vernon Oswald
1990-7-30
4410
Colusa
Maxwell-Colusa Rd just east of Two Mile Rd, ca. 2 mi east of Maxwell. Between road and irrigation ditch.
27
Comment
JEPS113894
Grindelia hirsutula
L. P. Janeway
2007-6-17
9058
Colusa
Inner North Coast Ranges; Along Bartlett Springs Road between Bear Valley and Walker Ridge Road.
530
Comment
UC71783
Grindelia hirsutula
H. P. Chandler
1905-9-14
Colusa
Princeton
Comment
UC727696
Grindelia hirsutula
Milo S. Baker
1946-9-3
11582
Colusa
towards Williams on Hwy 3 mi w Colusa
Comment
UC765013
Guillenia flavescens
R. F. Hoover
1938-4-24
3222
Colusa
Venado
Comment
UCD66996
Gutierrezia californica
Gordon Harrington
2008-8-14
79
Colusa
BLM Payne Ranch. Lands to the SW of Hwy 16/20 junction. Just south of the Brophy Creek - Bear Creek confluence on the east side of Bear Creek (west side of Hwy 16). North side of gravel turn-out.
210
Comment
JEPS80117
Hackelia amethystina
L. R. Heckard with J. Hickman
1980-7-1
5275
Colusa
n side of East Peak; Snow Mountain
2072
Comment
CHSC112271
Hainardia cylindrica
Lowell Ahart; John Dittes, Josephine Guardino
2013-4-26
18638
Colusa
Inner North Coast Range. North side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
CHSC80500
Hainardia cylindrica
Caroline Warren; Jenny Marr, Heidi West, Natalie Wight
1998-6-11
Colusa
Vicinity of Funks Creek and Logan Ridge.
106
Comment
UCD85141
Hainardia cylindrica
Beecher Crampton
1953-4-29
1143 A
Colusa
Colusa County, 2 miles east of Maxwell.
Comment
UCD85147
Hainardia cylindrica
Beecher Crampton
1958-5-19
4795
Colusa
10.1 miles southeast of Leesville, foothill area.
Comment
CAS-BOT-BC302201
Harmonia hallii
G. L. Stebbins
1971-6-6
8013
Colusa
South end of Walker Ridge, near Clyde Mine
914
Comment
JEPS94706
Harmonia hallii
Vernon Oswald and Lowell Ahart
1998-5-7
9012
Colusa
Bartlett Springs Road 2.8 mi w of Bear Valley Road (0.1 mi e of Sawtelle Vallyy and Grapevine Flat Roads); Bartlett Springs Road
633
Comment
UCD135766
Harmonia hallii
Bruce G. Baldwin
1986-4-13
599
Colusa
2.6 miles west of junction with Bear Valley Road along Bartlett Springs Road.
Comment
UCD82590
Harmonia hallii
Craig D. Thomsen; J. Wiegand, S. Harrison, G. Harrington, A. Fulks
2008-4-22
2735
Colusa
Walker Ridge. About 3.2 mi N of Hwy 20, adjacent to abandoned road leading back to Walker Ridge Rd. from 'Oak Cove.
822
Comment
UCD83819
Harmonia hallii
Ellen Dean; G. Harrington, K. Mawdsley, J. Shepard
2010-5-1
5966
Colusa
Walker Ridge on border of Lake and Colusa Counties. Along Walker Ridge Rd., just E of Barrel Springs area.
721
Comment
CDA34807
Harmonia hallii
Peter Warner
2010-5-16
155
Colusa
Walker Ridge Road, ~8.3 km N of jct. with Hwy. 20, ~1 km N of jct with Indian Valley Reservoir Rd., at road cut, both sides and adjacent slopes.
Comment
JEPS80276
Hazardia whitneyi var. discoidea
L. R. Heckard and J. Hickman
1980-9-16
5462
Colusa
n slope West Peak; Snow Mt., West Peak
2042
Comment
JEPS83144
Hazardia whitneyi var. discoidea
L. R. Heckard and J. Hickman
1980-9-16
5462
Colusa
West Peak Snow Mt. (n slope)
2042
Comment
UCD72454
Hedypnois cretica
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3791
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. Near north end of bridge, west side of creek.
281
Comment Read comments Jun 12 2013
CDA15546
Helianthus bolanderi
G. F. Hrusa
1998-10-28
14897
Colusa
North Coast Ranges; along Cedar Camp Rd. as it enters Little Stony Ck. Cyn., approx. 1/2 mi. from Lodoga/Stonyford Rd.
Comment
CHSC112644
Helianthus bolanderi
Lowell Ahart
2013-10-1
19071
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
CHSC94313
Helianthus bolanderi
Lowell Ahart
2006-8-9
13097
Colusa
Gravel bar on the south side of Stony Creek, at Mine Camp, about 3 1/2 miles (air) west of Stonyford.
455
Comment
RSA718200
Helianthus bolanderi
L. Ahart
2006-8-9
13097
Colusa
On the south side of Stony Ceek, at Mine Camp, about 3.5 miles (air) west of Stonyford.
455
Comment
UC194952
Helianthus bolanderi
H. M. Hall
1916-8-16
10267
Colusa
near Williams
Comment
UC71768
Helianthus bolanderi
H. P. Chandler
1905-9-14
Colusa
Princeton
Comment
UC727672
Helianthus bolanderi
Milo S. Baker
1946-9-4
11616
Colusa
near Locked Gate; Colusa Gun Club, Butte Sink
Comment
UCD64041
Helianthus bolanderi
Craig D. Thomsen
2000-6-23
2426
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, Colusa Co. milepost 2.63.
304
Comment
UCR196276
Helianthus bolanderi
Ellen Dean, Gordon Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3903
Colusa
Payne Ranch (owned by BLM), lands to the southwest of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek, c. 1.0 mi southwest of parking lot
390
Comment
RSA126696
Helianthus bolanderi
Peter H. Raven, Richard Snow
1959-9-11
14424
Colusa
About 2 miles south-east of Happy Camp
762
Comment
JEPS120804
Heliotropium curassavicum
Lowell Ahart
2013-10-1
19096
Colusa
Strand of East Park Reservoir, about 2.5 air miles SE of Stonyford, about 2.5 miles NW of Lodoga, about 10 air miles NW of Sites.
Comment
UCD66875
Heliotropium curassavicum
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5078
Colusa
BLM Payne Ranch. Lands to the southwest of the intersection of Hwy 16 and Hwy 20. In western part of ranch, several hundred feet downslope of ridge trail. Along trail that starts along ridge bordering Thomspon Creek headwaters and loops back to Ridge trail. Large, dammed stock pond, holding water still in middle of meadow.
Comment
UCD72399
Heliotropium curassavicum
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5124
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Confluence of Cache and Bear Creeks at southern tip of ranch.
198
Comment
SD22371
Heliotropium curassavicum var. oculatum
Richard Neil
1938-6-20
Colusa
Grimes
Comment
CHSC94523
Heliotropium europaeum
Lowell Ahart
2006-8-22
13228
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
JEPS104401
Helminthotheca echioides
Lowell Ahart
2003-10-23
10661
Colusa
Along Squaw Creek, just south of East Park Reservoir, ca 1/8 mi nw of Sites Lodoga Rd, ca 1 mi n of Lodoga, ca 21 mi w of Maxwell.
368
Comment
JEPS68350
Hemizonia congesta subsp. clevelandii
L. R. Heckard with R. Bacigalupi and B. Doren
1971-9-9
2790
Colusa
on Ladoga road about 3 mi s Stonyford
335
Comment
JEPS83161
Hemizonia congesta subsp. clevelandii
L. R. Heckard and J. C. Hickman
1980-9-15
5418
Colusa
slopes w Summit Springs; Snow Mt.
1554
Comment
UCD146726
Hemizonia congesta subsp. clevelandii
G. F. Hrusa
1998-6-19
14596
Colusa
Inner North Coast Ranges. Along Little Stony Creek, on Goat Mountain Road. Around 1/2 km west of intersection with Lodoga-Stonford Road.
400
Comment
UCR225657
Hemizonia parryi
Craig D. Thomsen, Gordon Harrington
2008-7-6
2784
Colusa
BLM Payne Ranch. Lands to the SW of the jct of Hwys 20 and 16. Near valley at the bottom of Lynch Canyon at the junction of Thompson and Lynch Creeks. Informal name for the building in the area is 'Roadkill Cafe.' Small stockpond c. 0.2 miles to the south of the Roadkill cafe.
396
Comment
SEINET10758258
Hemizonia parryi subsp. parryi
Andrew Townesmith, Karen M. Meyer
2007-8-7
Townesmith 909
Colusa
Mendocino National Forest, Grindstone Ranger District. Vicinity of Mill Creek Campground/Davis Flat OHV staging area. Off Forest Service route M10, 8.2 miles west of intersection with Lodoga-Stonyford road in Stonyford. T18N R7W, near edge between sections 4 and 5.
499
Comment
HSC103568
Hemizonia pungens
Thomas W. Nelson, Jane Nelson
1983-8-13
7596
Colusa
At rest stop just south of Maxwell
Comment
JEPS75707
Heracleum lanatum
Alice Q. Howard
1972-7-10
10
Colusa
stream crossing trail between Fouts Camp and Box Springs (lower of 2 wet places along trail on n. side of ridge separating Trout & Paradise Creeks, Snow Mt.); Snow Mt.
1600
Comment
CHSC112922
Hesperevax acaulis var. robustior
B. Castro; L. Janeway, Robin Carter
2010-3-23
1801
Colusa
Vicinity of Golden Gate in Logan Ridge, Funks Reservoir, and the Tehama-Colusa canal, in disturbed, grazed annual grassland.
121
Comment
UC88271
Hesperevax caulescens
B.
1889-1-1
Colusa
Colusa
Comment
UCR261648
Hesperevax caulescens
Ann Howald
2003-4-23
2314
Colusa
Inner North Coast Ranges, Indian Valley, East Park Reservoir, Catholic Point peninsula, east of Coppermine Road, c. 1.1 mi north of intersection with East Ruby King Road
403
Comment
CHSC79845
Hesperocnide tenella
B. Castro; L. P. Janeway
2000-5-4
1129
Colusa
Vicinity of Sites, Sites-Lodoga Rd, and Grapevine Creek.
246
Comment
SD40656
Hesperocyparis sargentii
Carl B. Wolf, E. R. Johnson
1934-10-15
Colusa
Cook Springs (western part of county)
550
Comment
UCD82619
Hesperolinon
Craig Thomsen; G. Harrington
2009-5-12
2887 b
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
710
Comment
CAS-BOT-BC175982
Hesperolinon californicum
A. A. Heller
1916-6-6
12352
Colusa
Coast Range on the grade about 3 miles west of Leesville
Comment
JEPS122821
Hesperolinon californicum
W. A. Freyman with A. C. Schneider & Y. P. Springer
2014-5-20
288
Colusa
Along north side of Goat Mountain Road west of Lodoga.
Comment
JEPS94735
Hesperolinon californicum
Vernon H. Oswald and Lowell Ahart
1998-7-15
9269
Colusa
Bartlett Springs Road 1.6 mi w of Bear Valley Road; Bartlett Springs Road
487
Comment
UC1212442
Hesperolinon californicum
Herbert L. Mason
1946-5-31
12815
Colusa
1 mi e Lake County line (Bartlett Springs to Williams road, western Colusa County); Inner North Coast Ranges
Comment
UC1212449
Hesperolinon californicum
Helen K. Sharsmith
1953-6-17
4252
Colusa
1 mi n origin of Wilbur Springs road (near Hwy 20); Inner North Coast Ranges, Bear Creek drainage
365
Comment
UC1212460
Hesperolinon californicum
Helen K. Sharsmith
1953-6-17
4248
Colusa
on State Hwy 20 ca 100 ft s origin of Wilbur Springs road; Inner North Coast Ranges, Bear Creek
320
Comment
UC1212465
Hesperolinon californicum
Helen K. Sharsmith
1959-5-27
4695
Colusa
foot grade on Lower Lake to Williams road (w side of valley); Inner North Coast Ranges, Bear Valley
426
Comment
UCD63908
Hesperolinon californicum
Craig D. Thomsen
2000-6-23
2382
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection (between Colusa Co. mileposts 2.17 and 2.25).
342
Comment
UCR261748
Hesperolinon californicum
Ann Howald
2003-5-29
2347
Colusa
Inner North Coast Ranges, Indian Valley, east side of East Park Reservoir, c. 3.6 miles north of Lodoga, 0.1 mi south of Chisolm Cove Group Campground
385
Comment
CAS-BOT-BC175983
Hesperolinon californicum
T. S. Brandegee
1884-6-1
s.n.
Colusa
Unspecified
Comment
JEPS110118
Hesperolinon disjunctum
Lowell Ahart
2006-6-11
12675
Colusa
On the east side of an off road trail (Trail 30), about 100 yards south of Fouts Road, about 5 miles (by road) west of Stonyford
613
Comment
JEPS120982
Hesperolinon disjunctum
Lowell Ahart, John Dittes, Josephine Guardino
2013-4-26
18635
Colusa
On N side of Hwy 20, just E of Lake County Line, 12.2 air miles ENE of town of Clear Lake, 17.1 air miles W of Williams.
Comment
UC1212486
Hesperolinon disjunctum
Helen K. Sharsmith
1953-6-17
4249
Colusa
one mi beyond origin of Wilbur Springs road from State Hwy 20 Inner North Coast Ranges, Bear Creek drainage
335
Comment
UC1212488
Hesperolinon disjunctum
Helen K. Sharsmith
1959-5-27
4696
Colusa
foot grade on Lower Lake to Williams road (w side of valley); Inner North Coast Ranges, Bear Valley
426
Comment
UC1212491
Hesperolinon disjunctum
Helen K. Sharsmith
1953-6-18
4255
Colusa
road between Fouts Springs and Stoneyford; Inner North Coast Ranges, Mendocino National Forest, Candy B
609
Comment
CAS-BOT-BC176220
Hesperolinon disjunctum
Helen K. Sharsmith
1953-6-18
4254
Colusa
One mile beyond Wolf Glade on spur road, drainage of Stoney Creek, Mendocino National Forest
609
Comment
UCD110516
Hesperolinon disjunctum
Marilyn Ivey
1973-5-19
55
Colusa
1.5 miles up Wilbur Springs Road north off of State Highway 20.
Comment
CHSC111651
Hesperolinon drymarioides
David Isle; Niall McCarten, Roxanne Bittman
1987-5-26
2062
Colusa
Mendocino National Forest - North Coast Ranges Little Stony Creek Watershed. On N slope openings in serpentine chaparral N of Cook Springs (at end of rd).
463
Comment
JEPS122820
Hesperolinon drymarioides
W. A. Freyman with A. C. Schneider & Y. P. Springer
2014-5-20
289
Colusa
200 feet up slope from end of Cook Springs Road west off of Leesville Lodoga Road south of Lodoga.
Comment
UC1212301
Hesperolinon drymarioides
Helen K. Sharsmith
1953-7-1
4407
Colusa
serpentine slope on n side canyon directly adjacent to Cook Springs (at end of road, ca five mi sw of Ladoga by road); Inner North Coast Ranges
Comment
UC1509752
Hesperolinon drymarioides
C. M. Rogers
1969-6-21
13265
Colusa
near Cooks Springs
Comment
UCD110523
Hesperolinon drymarioides
Helen K. Sharsmith
1952-6-21
4159
Colusa
North canyon slope overlooking Cook Springs.
548
Comment
UCD163331
Hesperolinon micranthum
Craig D. Thomsen
2009-5-3
2800
Colusa
Walker Ridge. Vicinity of Walker Ridge Rd., about 0.5 miles north of Hwy 20.
Comment
UCD83448
Hesperolinon micranthum
Craig Thomsen; G. Harrington
2009-5-14
2888
Colusa
Colusa County on Walker Ridge: Eaton Springs, about 1 mile east of Walker Ridge Road.
710
Comment
CHSC118362
Heteranthera dubia
Dean Wm. Taylor
2014-5-18
21476
Colusa
3.5 miles southwest of Maxwell; eastern bank of the Glenn-Colusa Canal downstream of the crossing of Fairview Road.
35
Comment
UCR141657
Heteranthera dubia
R. Yeo
1976-1
s.n.
Colusa
3 mi N of Williams, Glenn-Colusa Canal irrigation district
24
Comment
RSA0072452
Heteromeles arbutifolia
Michael A. Vincent, Robert M. Rhode
1996-3-30
7296
Colusa
Along Brim Rd., 1.9 mi. W jct. Bear Valley Rd.
Comment
JEPS73775
Heuchera micrantha var. pacifica
L. R. Heckard
1972-7-10
3126
Colusa
3 mi nw Fouts Springs (on se corner of Snow Mt.); Snow Mt
1828
Comment
UC931960
Hibiscus lasiocarpos
Verne Grant and Alva Grant
1946-8-6
7837
Colusa
1 mi. n. of Butte Outing Gun Club near Colusa (Butte Creek); Butte Creek
Comment
CAS-BOT-BC203371
Hibiscus lasiocarpos var. occidentalis
Milo S. Baker
1946-9-4
11608
Colusa
Butte Sink, near gate of Colusa Gun Club
Comment
CHSC25319
Hibiscus lasiocarpos var. occidentalis
Hayes; Warner, Schlising
1977-8-23
49
Colusa
Along Putnam Rd., where this road reaches the Butte Creek Drainage, off of Gridley road 5.
50
Comment
JEPS110110
Hirschfeldia incana
Lowell Ahart
2006-8-9
13155
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
RSA725024
Hirschfeldia incana
L. Ahart
2006-8-9
13155
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
348
Comment
CDA20339
Holocarpha virgata
D. Brown
2001-10-17
PDR 024366
Colusa
Northern California; Vicinity of Colusa
0
Comment
UC194239
Holocarpha virgata subsp. virgata
H. M. Hall
1916-8-16
10270
Colusa
near Arbuckle
Comment
RSA28813
Holodiscus discolor
A. A. Heller
1916-6-6
12362
Colusa
Coast Range on the grade 3 miles W of Leesville.
Comment
CAS-BOT-BC152577
Holodiscus discolor var. discolor
A. A. Heller
1916-6-6
12362
Colusa
Coast Range on the grade about 3 miels west of Leesville
Comment
UCD61443
Hordeum brachyantherum
Ellen Dean; G. Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3888
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek.Approximately 1000 ft NW of parking lot.
339
Comment
CHSC112029
Hordeum brachyantherum
David Isle; Rhonda Isle, Justin Isle
1988-5-22
2098
Colusa
Mendocino National Forest, Pendell Ranch, S of Fouts Springs Rd 18N01 (M10), ~2 miles W of Co. Rd. ~150 yds south of Pendel home.
384
Comment
JEPS121772
Hordeum brachyantherum
David Isle
1989-5-14
1995
Colusa
COLUSA County, CA. Pendell Ranch ~ 2 miles W of Co. Rd. 306 Jct. w/ Fouts Springs Road.
Comment
CHSC107983
Hordeum brachyantherum subsp. brachyantherum
B. Castro; L. Janeway
2011-4-27
1864
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; approximately 1 mi southeast of Funks Reservoir and 800 ft northeast of Tehama-Colusa Canal. Around edges of alkaline flat off northwest corner of large +/- alkaline marsh.
49
Comment
UC1745700
Hordeum brachyantherum subsp. brachyantherum
Annetta M. Carter, Sarah Dyal, Ethel Crum
1938-5-8
1391
Colusa
5.5 mi. S of Leesville. Bear Valley.
426
Comment
SD225718
Hordeum depressum
Carol Witham, Jennifer Buck
2001-4-30
161
Colusa
2 mi. south of the town of Colusa along Hwy 20, east east of Hwy 20 and the Colusa Airpo9rt, Dolan Ranch site, pool # DOL001
Comment
UCD163711
Hordeum depressum
Craig Thomsen
1999-5-10
2023
Colusa
Colusa County. At confluence of Sulphur Creek and Bear Creek. About 3 miles north of Hwy 20.
Comment
CAS-BOT-BC285061
Hordeum marinum subsp. gussoneanum
Roxana S. Ferris
1926-4-22
6290
Colusa
3 miles west of Colusa
Comment
CHSC107165
Hordeum marinum subsp. gussoneanum
L. P. Janeway; B. Castro
2011-4-27
10243
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 1.8 km southeast of Funks Reservoir and 0.2 km northeast of Tehama-Colusa Canal. Large +- alkaline vernal pool/marsh; mucky clay soil. North edge of large wetland.
49
Comment
CHSC83705
Hordeum marinum subsp. gussoneanum
L. P. Janeway
2002-4-24
7520
Colusa
Sacramento Valley/Inner North Coast Ranges border. Vicinity of Logan Ridge, Stone Corral Creek, and Funks Creek.
103
Comment
UCD163872
Hordeum marinum subsp. gussoneanum
Craig D. Thomsen
2000-3-31
2173
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection.
Comment
UCD85779
Hordeum marinum subsp. gussoneanum
A. A. Beetle
1942-5-21
3273
Colusa
12 miles north of Williams.
Comment
RSA669471
Hordeum murinum subsp. glaucum
R. R. Halse
2001-3-22
5946
Colusa
Williams, along vacant lot by 455-4th street.
18
Comment
UCD57281
Hordeum murinum subsp. glaucum
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3649
Colusa
BLM Payne Ranch. Mouth of Craig Canyon. Along unimproved road, about 2 road miles south of junction of Hwy 20 and Hwy 16. .
316
Comment
CHSC83698
Hordeum murinum subsp. leporinum
L. P. Janeway
2002-4-24
7521
Colusa
Sacramento Valley/Inner North Coast Ranges border. Vicinity of Logan Ridge, Stone Corral Creek, and Funks Creek.
103
Comment
UCD86536
Hordeum vulgare
Beecher Crampton
1962-4-17
6216
Colusa
Sycamore.
Comment
JEPS80245
Horkelia californica subsp. dissita
L. R. Heckard and J. Hickman
1980-9-15
5420
Colusa
w Summit Springs (Snow Mt.); , w of Summit Springs
1554
Comment
JEPS80817
Horkelia californica subsp. dissita
L. R. Heckard and J. C. Hickman
1981-7-31
5789 a
Colusa
e side Snow Mt. (Dry meadow at Box Spring); Box Spring
1402
Comment
JEPS95511
Hornungia procumbens
Vernon H. Oswald and L. Ahart
1994-4-6
6075
Colusa
T16N R7W SW1/4 Sec. 11, 1800 ft, Chaparral. Goat Mtn. Rd. 0.3 mi S of Little Stony Creek Bridge, SW of Digger Pine Flat, SSW of Stonyford
548
Comment
UCD66960
Hosackia crassifolia
Ellen Dean; Davis Botanical Society
2008-5-31
5004
Colusa
west of I-5 at Maxwell, east slope of Goat Mountain, along Goat Mountain Road.
1152
Comment
UCD106062
Hosackia crassifolia
Freed W. Hoffman
1948-6-27
2515
Colusa
Upper Letts Valley, 8.6 miles south of Fouts Springs, western part of county.
Comment
UCD146730
Hosackia crassifolia var. crassifolia
G. F. Hrusa
1998-6-19
14617
Colusa
North Coast Ranges. Along USFS Pacific Ridge Road. (M5) Above intersection with Goat Mountain Road.
1120
Comment
UCD67029
Hydrophyllum occidentale
Ellen Dean; Davis Botanical Society
2008-5-31
5012
Colusa
west of I-5 at Maxwell, Goat Mountain, ridge below summit off of Goat Mountain Road.
1734
Comment
HSC48199
Hypochaeris glabra
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3957
Colusa
Along Bear Valley Rd., 2.5 mi. from junction with Hwy. 20
366
Comment
SEINET255491
Hypochaeris glabra
Richard R. Halse
2007-3-25
7122
Colusa
Along State Hwy. 20 ca. 7.8 miles northeast of its junction with State Hwy. 16, at base of Salt Canyon.
100
Comment
UCD57109
Hypochaeris glabra
Gordon Harrington; Diana Hickson
2007-4-7
0022
Colusa
Colusa Co. Ca. BLM Payne Ranch, SW intersection of Hwy 16 and Hwy 20, approx. 1/5 to 1/2 mile W of Roadkill Cafe on old fuel break.
442
Comment
JEPS81320
Iris fernaldii
L. R. Heckard and J. C. Hickman
1982-7-6
5936
Colusa
wilderness area above Summit Springs (s side of Snow Mt, near entrance and parking to Snow Mt); Snow Mt.
1584
Comment
RSA256676
Iris macrosiphon
Maralyn O'Meara, Gary S. Lester
1974-5-4
342
Colusa
Walker Ridge Road, ca. 0.7 mile from junction with Little Indian Valley Road
854
Comment
JEPS80386
Juncus
L. R. Heckard, and J. Hickman
1981-6-22
5619
Colusa
Dark Hollow Creek Snow Mt.
1889
Comment
CHSC62909
Juncus balticus
Vernon H. Oswald
1994-4-11
6104
Colusa
Sacramento National Wildlife Refuge. Refuge located ca. 7 mi S of Willows, at the SW corner of Tract 39.
25
Comment
UCD65641
Juncus balticus
Craig D. Thomsen
2000-4-28
2178
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
CHSC107974
Juncus bufonius var. bufonius
B. Castro; Robin Carter, Jessica Boyt
2011-4-25
1859
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; ca I mi southeast of Funks Reservoir and 0.2 mi northeast of Tehama-Colusa Canal. Large +- alkaline vernal pool/marsh. In vernal pool in compacted E-W road track that goes through marsh.
49
Comment
CHSC94468
Juncus bufonius var. bufonius
Lowell Ahart
2006-8-9
13144
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
JEPS75729
Juncus ensifolius
L. R. Heckard
1974-9-9
3865
Colusa
se of Foutch Camp (just ne of rocky promontory); Snow Mt.
1798
Comment
UCD163648
Juncus xiphioides
Craig Thomsen
1998-6-19
1944
Colusa
Bear Valley. About 8.5 miles north of Hwy 20.
Comment
CDA20252
Juncus xiphioides
G. D. Barbe, Nola Parmer
1982-6-4
3638
Colusa
Sacramento Valley; Goat Mountain Rd, w of Lodoga-Stonyford Rd, Mendocino National Forest.
0
Comment
CHSC116398
Juncus xiphioides
David Isle
2014-6-7
2133
Colusa
North Coast Range: About 1 mile south of Stonyford, California. On west bank of Salt Creek, just north of 2nd curve north of bridge on Dennis Drive. On David and Rhonda Isle property. (Waypoint is on Dennis Drive Bridge over Salt Creek.) 10 -0538832E, 4357208N.
Comment
UCR280794
Juncus xiphioides var. xiphioides
David Isle
2014-6-7
2133
Colusa
North Coast Range, c. 1 mile south of Stonyford, David and Rhonda Isle property. West bank of Salt Creek, just north of second curve north of bridge on Dennis Drive
366
Comment
UCD70298
Juniperus californica
D. Sanchez-Mata
1998-7-9
s.n.
Colusa
Lodoga-Stonyford. Mendocino National Forest. Goat Mountain Road between Lodoga and Red Rock Cabin. Open California juniper woodland (Juniperus californica).
420
Comment
HSC97013
Keckiella corymbosa
L. Ahart
2006-8-9
13102
Colusa
S side of Stony Creek, at Mine Camp, about 3.5 mi. W of Stonyford.
422
Comment
RSA718197
Keckiella corymbosa
L. Ahart
2006-8-9
13102
Colusa
On the south side of Stony Creek, at Mine Camp, about 3.5 miles (air) west of Stonyford.
422
Comment
CAS-BOT-BC123283
Krynitzkia rostellata
M. K. Curran
1884-5-1
s.n.
Colusa
Leesville (wrote Leesburg, Lake(?) Co. on label; later corrected to Leesville
Comment
CHSC80155
Lactuca saligna
B. Castro; G. Kuenster
2000-7-19
1211
Colusa
Vicinity of Maxwell, Funks Creek, and the Glenn-Colusa canal, on low flat terrace beside S edge of shallow intermittent stream channel draining eastward out of the hills east of Golden Gate.
39
Comment
RSA0011766
Lagophylla dichotoma
Ethel Crum
1938-5-8
2033
Colusa
Inner North Coast Range, 3 miles N of Leesville.
Comment
JEPS110184
Lagophylla minor
Lowell Ahart
2006-6-11
12667
Colusa
On the east side of an off road trail (Trail 30), about 100 yards south of Fouts Road, about 5 miles (by road) west of Stonyford
613
Comment
UCD163223
Lagophylla minor
Craig D. Thomsen
2000-4-12
2155
Colusa
Bear Creek Botanical Management Area. CalTrans right-of-way along Hwy 20 (south side), about 1 mile west of Hwy 20/16 intersection.
345
Comment
UCR227339
Lagophylla minor
Craig D. Thomsen
2000-5-11
2303
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, south side of Hwy 20, c. 0.5 mi west of Hwy 20/16 intersection (between mileposts 2.17 and 2.63)
325
Comment
JEPS81971
Lagophylla minor
Rimo Bacigalupi, T. Crovello, and L. Heckard
1965-4-26
9046
Colusa
on road to Bartlett Springs 2 mi from Ladoga junction (summit w of Bear Valley, Colusa-Lake County boundary)
670
Comment
UCD82369
Lagophylla minor
Robin McMaster
1973-4-15
341
Colusa
0.5 mi towards Bartlett Springs from Bear Valley Road.
Comment
JEPS119421
Lagophylla ramosissima
G. K. Helmkamp, E. A. Helmkamp
2009-5-20
14740
Colusa
Central Inner Coast Ranges, along CA-16 near Bear Creek, 1.6 miles south of the junction with CA-20
Comment
UCD159332
Lagophylla ramosissima
D. S. Park
2010-6-5
116
Colusa
Walker ridge, Cold Spring Mt. roadside and adjacent grassland.
760
Comment
UCR206691
Lamium amplexicaule
George K. Helmkamp, E. A. Helmkamp
2009-1-31
14323
Colusa
Sacramento Valley, Jameson Road 1.3 miles north of its junction with Lurline Road and south of Harbison Road, generally west of the city of Colusa
16
Comment
CAS-BOT-BC337883
Lasthenia
Peter Rubtzoff
1978-5-14
9167
Colusa
Bear Valley Road ca. 4-5 miles south of junction of the road to Fort Ross State Historic Park. Bartlett Springs Road
Comment
CAS-BOT-BC337916
Lasthenia californica
Joshua Suchocki; Charlene Vullo; Kyle Wear
1995-4-1
46
Colusa
Along Bear Valley Rd., 1.2 miles west of the junction with Brim Rd.
414
Comment
CAS-BOT-BC324484
Lasthenia ferrisiae
Alice Eastwood
1921-4-11
10232
Colusa
Colusa
Comment
UC90070
Lasthenia fremontii
T. S. Brandegee
Apr 1889
Colusa
Stites
Comment
UCD18839
Lasthenia fremontii
Vernal Pool Team 2001; Carol Witham and Jennifer Buck
2001-4-30
146
Colusa
2 mi. south of the town of Colusa along Hwy 20, east of Hwy 20 and the Colusa Airport, Dolan Ranch site, pool # DOL001, UTMs: 10S0587786; 4336302.
Comment
CHSC27622
Lasthenia glabrata
Timothy Spira; Robert Schlising
1978-5-13
3250
Colusa
Bear Valley, about 5 mi S of Leesville, on Bear Valley (=Wilber Springs) Road.
Comment
CHSC53934
Lasthenia glabrata subsp. glabrata
Vernon H. Oswald
1991-4-21
4520
Colusa
Bear Valley Rd in Bear Valley, 1.0 mi south of Brim Rd (Bartlett Springs Rd), west of Williams. Roadside.
417
Comment
UC1049545
Lasthenia glabrata subsp. glabrata
Rimo Bacigalupi
1950-4-16
3124
Colusa
Bear Valley
Comment
UCD82464
Lasthenia gracilis
Craig Thomsen; G. Harrington
2009-5-12
2841
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
707
Comment
UCD67937
Lasthenia gracilis
Nancy Vucinich
1978-4-8
8
Colusa
Bear Valley, 10.3 miles N. of junction of Highways 16 and 20. Growing in open meadow, foothill woodland. Growing in clusters. Stems and leaves softly pubescent. Slender annual, yellow flowers.
396
Comment
UCD80896
Lathyrus vestitus
Ellen Dean; G. Harrington
2009-3-27
5296
Colusa
BLM Bear Creek (Payne) Ranch, lands to the SW of the jct of Hwys 16 and 20. Along road that connects Lynch Canyon and the Ridge Trail on slope above road.
453
Comment
HSC95475
Lathyrus vestitus subsp. vestitus
A. Skelly, B. Bletcher, G. McCabe
1996-3-30
10
Colusa
1.6 mi. W of Bear Valley Rd. and Brim Rd. on Brim Rd., 14.7 mi. on Walker Ridge Rd. to Brim Rd., 57 mi. E of Hwy. 101 on Hwy. 20, Leesville
Comment
CHSC62933
Lathyrus vestitus var. vestitus
Vernon H. Oswald; Lowell Ahart
1994-4-6
6070
Colusa
Goat Mtn. Rd. 0.3 mi S of Sullivan Creek Bridge, SW of Digger Pine Flat, S of Stonyford.
487
Comment
HSC103356
Lathyrus vestitus var. vestitus
Thomas W. Nelson, Jane Nelson
1981-4-16
6419
Colusa
Along Bartlet Springs-Bear Valley Rd., ~ 100 yds. from Bear Valley
610
Comment
CAS-BOT-BC323901
Layia chrysanthemoides
Mrs. H. C. Cantelow
1936-4-11
1155
Colusa
Bear Creek Canyon.
396
Comment
CAS-BOT-BC323905
Layia chrysanthemoides
R. F. Hoover
1938-4-24
3224
Colusa
Venado
Comment
CHSC55474
Layia chrysanthemoides
Barbara Adams
1991-4-6
13
Colusa
Ca 0.3 mi west of junction of Hwys 20 and 16, south side of Bear Creek, ca 18 mi southwest of Williams.
321
Comment
CHSC81247
Layia chrysanthemoides
J. Trizzino
2001-3-31
14
Colusa
Bear Valley Meadow along east side of Bear Valley Road.
396
Comment
JEPS13438
Layia chrysanthemoides
R. F. Hoover
1938-4-24
3224
Colusa
Venado
Comment
SEINET7062982
Layia chrysanthemoides
A. G. Vestal
1955-4-5
s.n.
Colusa
Along Route 16 about 0.2 mile south of Route 20 and near Bear Creek. UTM Zone 10, 555654mE, 4318071mN. (WGS84/NAD83).
320
Comment
UCD163702
Layia chrysanthemoides
Craig Thomsen
1999-5-10
2014
Colusa
Bear Valley. About 9 miles north of Hwy 20.
Comment
UCD164148
Layia chrysanthemoides
Craig Thomsen
1997-4-20
1923
Colusa
Bear Valley. About 8 miles north of Hwy 20.
Comment
UCR212376
Layia chrysanthemoides
Ellen Dean, Craig D. Thomsen, N. Voegtly, J. Alderson, Gordon Harrington
2008-3-30
4663
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Near corral on west side of Bear Creek just south of Hwy 20
320
Comment
CAS-BOT-BC323904
Layia chrysanthemoides
Roxana S. Ferris
1917-4-12
506
Colusa
4 miles E of Willaims. Alkali Plains.
Comment
CHSC53937
Layia platyglossa
Vernon H. Oswald
1991-4-21
4522
Colusa
Bear Valley Rd in Bear Valley, 3.3 mi south of Brim Rd (Bartlett Springs Rd), west of Williams. Roadside.
417
Comment Read comments May 24 2013
HSC96795
Layia platyglossa
J. Carey, A. Hong, J. Leffingwell
1995-4-1
31
Colusa
Bear Valley Rd., 1.2 mi. S of its junction with Brim Rd.
415
Comment
UCD163693
Layia platyglossa
Craig Thomsen
1999-4-27
1995
Colusa
Bear Valley. About 6 miles north of Hwy 20, west of Bear Valley Rd.
Comment
UCD57327
Layia platyglossa
Amy Whitcomb
2007-3-25
3
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
556
Comment
UCR206869
Layia platyglossa
George K. Helmkamp, E. A. Helmkamp
2009-1-31
14314
Colusa
Sacramento Valley, junction of Moon Bend Road and CA-20 at the south end of the city of Colusa
23
Comment
CAS-BOT-BC380897
Layia platyglossa
Ethel Crum
1936-5-8
2036
Colusa
Bear Valley 4 miles south of Leesville
426
Comment
HSC85783
Layia platyglossa
Bobbi Schnell, Leonel Arguello, Andrea Begnoche
1987-4-12
35
Colusa
Off to the side of the Road in Bear Valley
Comment
UCD135674
Layia platyglossa
Bruce G. Baldwin
1986-4-13
597
Colusa
Bear Valley, 7.3 miles north of junction with California State Highway 20 along Bear Valley Road.
Comment
CAS-BOT-BC329322
Layia septentrionalis
Ethel Crum
1938-5-7
2013
Colusa
Summit of ridge, Comanche Hills, 4 miles NE of Rumsey
254
Comment
CAS-BOT-BC329323
Layia septentrionalis
James Jokerst
1985-4-10
2227
Colusa
Near Walker Ridge.
547
Comment
JEPS13436
Layia septentrionalis
R. F. Hoover
1938-4-24
3213
Colusa
Upper Sand Creek
Comment
UC638682
Layia septentrionalis
Ethel Crum
1938-5-7
2013
Colusa
4 mi ne of Rumsey; Comanche Hills
254
Comment
UC75946
Layia septentrionalis
Miss M. Alice King
1905-1-1
Colusa
near College City
Comment
UC761855
Layia septentrionalis
R. F. Hoover
1938-4-23
3206
Colusa
grade on Rumsey-Arbuckle road
Comment
UC761877
Layia septentrionalis
R. F. Hoover
1938-4-24
3213
Colusa
Upper Sand Creek
Comment
UCR261646
Layia septentrionalis
Ann Howald
2003-4-23
2313
Colusa
Inner North Coast Ranges, Indian Valley, East Park Reservoir, Catholic Point peninsula, east of Coppermine Road, c. 1.1 mi north of intersection with East Ruby King Road
403
Comment
JEPS127105
Lemna minuta
Lowell Ahart, John Dittes, Josephine Guardino
2016-2-14
20723
Colusa
About 1/2 mile north of Letts Lake, about 1/2 mile south of the large campground, about 13 miles (air) southwest of Stonyford.
Comment
POM312464
Lemna trisulca
C. Ritchie Bell
1951-6-13
1167
Colusa
Lake below Letts Meadow on road from Bear Creek to Foutes Spring
915
Comment
SEINET8201321
Lemna trisulca
J. M. Tucker, L. K. Mann, John Tothill
1959-1
3532
Colusa
Mill Valley
Comment
UC1101262
Lemna trisulca
C. Richie Bell
1951-6-13
1167
Colusa
just below Letts Meadow (on road from Bear Creek to Foutes Spring)
914
Comment
UCR225659
Leontodon taraxacoides
Craig D. Thomsen, Gordon Harrington
2008-7-6
2777
Colusa
BLM Payne Ranch, lands to the southwest of the junction of Hwys 20 and 16. Western edge of ranch on ridge above Cache Creek Canyon, along ridge trail
511
Comment
CAS-BOT-BC88675
Lepidium acutidens
A. A. Heller
1921-4-10
13542
Colusa
Near Colusa.
Comment
UCD63721
Lepidium draba
Craig D. Thomsen
2008-5-31
2761
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy 16 and Hwy 20. Along entry road into Cowboy Camp from Hwy 16, 1 mile south of Hwy 20.
320
Comment
UCR233291
Lepidium lasiocarpum
George K. Helmkamp, E. A. Helmkamp
2011-4-1
17134
Colusa
Eastern foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 2.0 miles southeast of Sites
85
Comment
CHSC106232
Lepidium latifolium
B. Castro; L. P. Janeway
2001-6-3
1255
Colusa
Inner North Coast Ranges. Spring at Grapevine Flat, on top of Walker Ridge about 0.5 mi E of Baldy Mountain. Small strip of this species along old roadbed at head of the springs.
883
Comment
UC398784
Lepidium latipes
Brandegee
Apr 1889
Colusa
Colusa Junction
Comment
CHSC86962
Lepidium strictum
B. Castro
2003-4-10
1424
Colusa
Vicinity of Logan Ridge, Sulphur Gap and Lurline Creek. In bed of dirt road near confluence of small creeks, on west edge of Sacramento Valley.
85
Comment
UC72926
Lepidium strictum
Miss M. Alice King
1905-1
Colusa
near College City; Sacramento Valley
Comment
UC1100305
Leptochloa fascicularis
Herbert L. Mason and Verne Grant
1946-8-6
12962
Colusa
pond on Colusa-Marysville Hwy 4 mi s Colusa (w side of Sacramento River)
Comment
HSC94027
Leptosiphon androsaceus
A. Skelly, G. McCabe, B. Bletcher
1996-3-30
3
Colusa
.9 mi. N of Walker Springs Rd. and Indian reservoir Rd. jct. on Walker Ridge Rd., 57 mi. E of Hwy. 101 on Hwy. 20
777
Comment
CHSC27551
Leptosiphon bicolor
Scott E. Patton
1978-4-9
6
Colusa
Salt Canyon, n side of Salt Creek, Hwy 20, 11 m wsw of Williams.
143
Comment
CHSC79790
Leptosiphon bicolor
L. P. Janeway; B. Castro
2000-5-1
6688
Colusa
Vicinity of Grapevine Creek and Sites-Lodoga Road.
201
Comment
UCD162985
Leptosiphon bicolor
Craig D. Thomsen
2002-4-4
2584
Colusa
Bear Creek Botanical Management Area. Roadside shoulder of Hwy 20 (south side), about 0.3 mile west of Hwy 20/16 intersection.
345
Comment
UCD163670
Leptosiphon bicolor
Craig Thomsen
1999-4-15
1970
Colusa
Bear Valley. About 7 miles north of Hwy 20.
Comment
UCD57330
Leptosiphon bicolor
Amy Whitcomb
2007-3-25
2
Colusa
BLM Payne Ranch. Destanella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
560
Comment
RSA388851
Leptosiphon bicolor
Eugene Tanimoto
1975-4-20
s.n.
Colusa
Bear Valley Road, 8.7 miles north of State Highway 20.
Comment
CHSC79791
Leptosiphon bolanderi
L. P. Janeway; B. Castro
2000-5-4
6706
Colusa
Vicinity of Grapevine Creek and Sites-Lodoga Road.
262
Comment
CHSC61230
Leptosiphon ciliatus
Siegel
1977-4-16
8
Colusa
Salt Canyon, n side of Salt Creek, Hwy 20, 10 mi wsw of Williams.
143
Comment
UCD163880
Leptosiphon ciliatus
Craig D. Thomsen
2002-3-27
2575
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection.
Comment
RSA589923
Leptosiphon ciliatus
Michael A. Vincent, Robert M. Rhode
1996-3-30
7288
Colusa
Along Bear Valley Rd. above Bear Creek, 0.6 mi. N jct. Wilbur Springs Rd.
Comment
UCD118848
Leptosiphon latisectus
Robert E. Preston
1995-3-26
724
Colusa
mi west of Stonyford, 0.25 mile north of North Fork campground.
Comment
CHSC1269
Leptosiphon parviflorus
V. Holt
1935-5-12
Colusa
Stonyford.
Comment
UCD163234
Leptosiphon parviflorus
Craig D. Thomsen
2001-4-12
2440
Colusa
Bear Creek Botanical Management Area. CalTrans right-of-way along Hwy 20 (south side), about 1 mile west of Hwy 20/16 intersection.
345
Comment
UCD73115
Leptosiphon parviflorus
Ellen Dean; G. Harrington
2008-3-17
4560
Colusa
BLM Payne Ranch. Lands to the southwest of the intersection of Hwy 16 and Hwy 20. Along old, unimproved road that traverses the ridge above the saddle between Thompson and Craig Canyons.
418
Comment
UCD82545
Leptosiphon parviflorus
Ellen Dean; G. Harrington, C. Thomsen,R. Wilmarth,Chiao-Yi Cheng
2009-5-20
5700
Colusa
Walker Ridge. Along Walker Ridge just S of turn-off to picnic area near Cold Spring.
1007
Comment
UCD118988
Leptosiphon parviflorus
Robert E. Preston
1995-6-2
869
Colusa
Walker Ridge.
1005
Comment
UCD15428
Leptosiphon parviflorus
Margit Sands
1985-4-13
32
Colusa
in Bear Valley, 7.4 miles north of Wilbur Hot Springs rd., a quarter of a mile form the west side of the road;
396
Comment Read comments Apr 18 2009
CHSC32205
Lesquerella occidentalis subsp. occidentalis
James Jokerst
1980-8-7
1067
Colusa
North Coast Ranges. Near Snow Mountain (west).
Comment
CAS-BOT-BC341799
Lessingia nemaclada
T. S. Brandegee
1884-1-1
s.n.
Colusa
Mountain House
Comment
UCD66535
Lessingia nemaclada
Craig D. Thomsen
2001-5-24
2487
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
JEPS94654
Lessingia ramulosa
Vernon H. Oswald and Lowell Ahart
1998-7-15
9276
Colusa
on Sawtelle Valley Rd. 0.4 mi n Bartlett Springs Rd. (w side of county)
670
Comment
UCD55454
Lessingia ramulosa
Ellen Dean; Gordon Harrington
2006-10-6
3278
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Ranch can be accessed via north gate which is located on a road on the S side of State Route 20, 2.3 road miles W of jct of State Routes 16 and 20. In Thompson Canyon, along dirt road that parallels ephemeral drainage.
374
Comment
UCD58177
Lessingia ramulosa
Gordon Harrington
2007-5-31
68
Colusa
BLM Payne Ranch. Lands to the SW of the intersection of Hwy 16 and Hwy 20. Along Thompson Creek, approximately 3/4 mile downstream from Road Kill Cafe.
357
Comment
SEINET11810787
Lessingia ramulosa
C. L. Abbott
1926-1
s.n.
Colusa
Colusa
Comment
UCD134101
Lessingia ramulosa
Vernon H. Oswald; Lowell Ahart
1998-7-15
9276
Colusa
west side of county on Sawtelle Valley Road 0.4 mile north of Bartlett Springs Road.
670
Comment
UCD56681
Lewisia rediviva
Roger Willmarth
2007-3-25
1
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
563
Comment
JEPS15551
Lewisia triphylla
G. Thomas Robbins with L. R. Heckard
1956-7-25
3708
Colusa
meadow along trail due s, skirting e base of ridge forming Snow Mt. West Snow Mt. East; Snow Mt. West
1981
Comment
JEPS76124
Leymus triticoides
W. L. Jepson
1938-6-11
18990
Colusa
on creek 4 mi se Wilbur Springs; Bear Creek
Comment
UCD163658
Leymus triticoides
Craig Thomsen
1998-6-10
1956
Colusa
Bear Valley. About 7 miles north of Hwy 20.
Comment
UCD65629
Leymus triticoides
A. A. Beetle
1946-6-27
4684
Colusa
Wilber Springs.
Comment
CDA32489
Leymus triticoides
W. C. Disney Jr.
1959-5-8
2344
Colusa
Princeton area
0
Comment
CHSC49659
Lilium pardalinum subsp. pardalinum
Vernon Oswald
1986-6-30
2173
Colusa
Fouts Springs Rd. (M10) 14.5 mi w of Rd. 306, 0.5 mi ne of jct. Letts Lake Rd, 17N02.
1219
Comment
CHSC53964
Limnanthes douglasii subsp. nivea
Vernon H. Oswald
1991-4-21
4517
Colusa
Lodoga Stonyford Rd, ca. 2 mi south of Stonyford. Along drainages in pastures.
371
Comment
UCD66941
Limosella acaulis
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5090
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western side of ranch along trail that follows the border of Lake and Colusa counties. Dunsfield Flat stock pond.
628
Comment
UC106857
Linanthus androsaceus
Brandegee
1889-1
Colusa
Comment
UC963759
Linanthus bolanderi
Herbert L. Mason
1941-4-5
12405
Colusa
3 mi s Stonyford
Comment
SEINET7096751
Linanthus ciliatus
A. G. Vestal
1955-4-5
s.n.
Colusa
Along Route 16 about 0.2 miles south of Route 20 and near Bear Creek. NAD27, 39? deg. 00' 36ao, -122?_ 21' 22ao (converted to WGS84 decimal degrees)
Comment
UC1745721
Linanthus ciliatus
Annetta M. Carter, Sarah Dyal, Ethel Crum
1938-5-7
1376
Colusa
Open ridge crest 0.1-0.2 mi. W of summit of Rumsey-Arbuckle rd. 4.2 mi. from Rumsey. Comanche Hills (?).
Comment
HSC89737
Linanthus dichotomus subsp. meridianus
Robin Bencie, James Jones, Rich Dwerlkotte
1989-4-15
11
Colusa
Goat Mtn. Rd., 0.2 mi. Lodoga/Stonyford Rd. jct.
152
Comment
UCR198147
Linanthus jepsonii
Ellen Dean, C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3681
Colusa
BLM Payne Ranch, lands to the southwest of junction of Hwy 20 and Hwy 16. Thomposon Canyon, near juncture with Craig Canyon
363
Comment
JEPS94194
Linanthus parviflorus
Vernon Oswald and Lowell Ahart
1998-5-7
9006 .1
Colusa
Bartlett Springs Rd. 2.1 mi. w. of Bear Valley Rd. and 0.8 m,i. e. of Sawtelle Valley & Grapevine Flat rds.
524
Comment
JEPS76798
Listera convallarioides
Alice Q. Howard
1972-7-10
4
Colusa
n side of the ridge separating Trout Creek and Paradise Creek (the highest of two mossy spring areas crossing trail from Fouts Camp to Box Springs); Snow Mountain
1676
Comment
HSC92471
Lithophragma heterophyllum
Brad Kerstetter, Roxanne Jackson, Jeff Cox
1995-5-6
52
Colusa
Blue Oak Campground
549
Comment
HSC72155
Lithophragma parviflorum
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9568
Colusa
Bear Valley Rd., 2.1 mi. from its junction with Hwy. 20
366
Comment
CHSC107938
Logfia filaginoides
B. Castro; Joe Silveira, Tom Boullion
2011-6-10
1887
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; ca 5 air mi NW of Maxwell, 1 mi southeast of Funks Reservoir and 0.2 mi northeast of Tehama-Colusa Canal. Ca 100 ft E of large +- saline/alkaline wetland/marsh, on S edge of compacted E-W road track that goes through marsh.
49
Comment
CHSC112234
Logfia filaginoides
Lowell Ahart
2013-5-1
18678
Colusa
Inner North Coast Ranges. On the north side of the of the wash, north side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
HSC45699
Logfia filaginoides
Christopher Knopp
1978-4-22
12
Colusa
Bear Valley Rd., 1.5 mi. from its junction with S.R. 20
412
Comment
RSA0118614
Logfia filaginoides
Lowell Ahart
2013-5-1
18678
Colusa
Inner North Coast Range. On the north side of the wash, north side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
CAS-BOT-BC283547
Lolium multiflorum
Roxana Stinchfield
1916-6-17
279
Colusa
Road to Tule near College City
Comment
UC38800
Lolium temulentum
J. Burtt Davy
May, 1898
4293
Colusa
near Princetown
Comment
RSA424750
Lomatium
Aaron Liston, M. Blumler
1987-4-26
667 -7
Colusa
Bear Valley - Lodoga Road, 6.6 miles S of Bartlett Springs Jct.
Comment
UCR206393
Lomatium
George K. Helmkamp, E. A. Helmkamp
2009-3-11
14374
Colusa
Inner North Coast Range Foothills, along CA-20, 14.3 miles southwest of Williams
375
Comment
CHSC42597
Lomatium californicum
Vernon Oswald
1986-6-4
2080
Colusa
M10, 0.2 mi w of its jct. with M5.
609
Comment
RSA715880
Lomatium californicum
David W. Isle
2003-6-4
370
Colusa
Mendocino National Forest, Middle Fork Stony Creek Watershed, W of M-10/M-5 junction on N edge of M-10
622
Comment
UCD80835
Lomatium californicum
Ellen Dean; G. Harrington, J. Alderson, M. Bibbo, B. Rice
2009-3-25
5292
Colusa
BLM Bear Creek (Payne) Ranch, lands to the SW of the jct of Hwys 16 and 20. South side of canyon that is located to the north of Brophy Canyon.
274
Comment
CDA33705
Lomatium ciliolatum
P. Hiatt
1979-4-26
Colusa
North end of Bear Valley at Bartlett Springs Road.
0
Comment
CHSC91009
Lomatium dasycarpum subsp. tomentosum
D. Isle
2002-4-18
289
Colusa
Mendocino National Forest--North Coast Ranges. Middle Fork Stony Creek Watershed. N of Motorcycle info. Center and Fouts Spring Rd., above 18N01.2 jct. w/ OHV trail.
451
Comment
HSC45713
Lomatium dasycarpum subsp. tomentosum
Sheila Logan
1978-4-22
73
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
CHSC42602
Lomatium hooveri
Vernon Oswald
1986-5-12
2005
Colusa
Brim Rd. (Bartlett Springs Rd.) 1.5 mi w of Bear Valley Rd.
441
Comment
CHSC70858
Lomatium hooveri
Vernon Oswald; Lowell Ahart
1998-4-21
8943
Colusa
Stonyford-Logoda Rd. 3.7 mi south of Stonyford.
384
Comment
UCD56662
Lomatium hooveri
Sam Bledsoe
2007-3-25
2
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
560
Comment
UCD150867
Lomatium hooveri
Clinton C. Shock
1980-5-3
73
Colusa
Walker Ridge, 14.6 miles north of State Highway 20, at intersection with road to Bear Valley.
670
Comment
CHSC112235
Lomatium macrocarpum
Lowell Ahart
2013-5-1
18676
Colusa
Inner North Coast Ranges. Near a small drainage, north of the of the wash and State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
UCD127696
Lomatium macrocarpum
G. L. Stebbins Jr.
1962-5-6
6025
Colusa
along Highway No. 20, Bear Creek, between Williams and Lower Lake, south of Wilbur Springs.
457
Comment
UCD58110
Lomatium macrocarpum
Ellen Dean; G. Harrington and P. McIntyre
2007-3-16
3370
Colusa
Payne Ranch. Along Hwy. 20, Destanella Flat area just E of Lake Co. border. Ca. 3.4 road miles west of junction with Hwy. 16. South side of road. South of Destanella.
548
Comment
UCD82531
Lomatium macrocarpum
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5683
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
843
Comment
UC1053450
Lomatium marginatum var. purpureum
Rimo Bacigalupi and Arthur Holmgren
1950-4-26
3172
Colusa
7.7 mi. w. Sites (Grapevine Grade to Lodoga)
Comment
JEPS17548
Lomatium utriculatum
Alice King
May, 1906
Colusa
College City
Comment
UC1053478
Lomatium utriculatum
Rimo Bacigalupi and Arthur Holmgren
1950-4-25
3177
Colusa
10 mi. n.w. Sites (Grapevine Grade to Lodoga)
Comment
UCD57859
Lomatium utriculatum
Gordon Harrington
2007-4-17
29
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Destanella Flat, just south of Hwy 20, approximately 3.4 road miles west of the Hwy 16 intersection.
553
Comment
HSC47643
Lomatium utriculatum
J. P. Smith, J. O. Sawyer
1978-4-29
9795
Colusa
Bear Valley Rd., 5.9 mi. from its junction with Hwy. 20
366
Comment
UCD40909
Lomatium utriculatum
A. Bebensee
1984-4-21
6
Colusa
9 miles north of Hwy 20 on Bear Valley Road. About 100 yards into field on west roadside.
Comment
CHSC116047
Lomatium vaginatum
Richard R. Halse
2014-3-25
9028
Colusa
Along the Sites-Logoda Road ca. 5.2 miles northwest of Sites.
175
Comment
RSA0010483
Lomatium vaginatum
Richard R. Halse
2014-3-25
9028
Colusa
Along the Sites-Logoda Road ca. 5.2 miles northwest of Sites.
175
Comment
UCD57666
Lonicera interrupta
Erica A. Smith; with Plant Biology 102
2007-4-29
4
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central/Eastern part of ranch. Craig Canyon. Along unimproved road, 100 yards west of where road crosses Craig Creek.
313
Comment
JEPS60203
Lotus crassifolius var. crassifolius
L. R. Heckard
1969-5-29
2239
Colusa
about 6.5 mi se Stonyford (along Trough Spring Ridge road, 0.2 mi n of its junction with Crackerbox Ridge road)
1127
Comment
JEPS86626
Lotus denticulatus
L. R. Heckard with P. C. Silva, R. L. and M. Moe
1988-6-19
6706
Colusa
0.5 km w Summit Springs (sw flank of Snow Mountain, Colusa-Lake County line); Snow Mountain
1500
Comment
UCR227340
Lotus denticulatus
Craig D. Thomsen
2000-6-23
2385
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, south side of Hwy 20, c. 0.5 mi west of Hwy 20/16 intersection (between mileposts 2.17 and 2.63)
325
Comment
SEINET7042570
Lotus formosissimus
A. G. Vestal
1938-9-1
s.n.
Colusa
Along top of trough, Springs Ridge near Foxtrap Springs. Fouts Spring quadrangle UTM Zone 10, 530960mE, 4350980mN.
Comment
CAS-BOT-BC234977
Lotus grandiflorus
Ellen Dean; C. Thomsen; G. Harrington; R. Wilmarth; R. Wenk
2010-6-2
6045
Colusa
Walker Ridge. Along Walker Ridge Road on southern part of the ridge, south of turnoff to Indian Valley Reservoir
769
Comment
JEPS60198
Lotus grandiflorus var. grandiflorus
L. R. Heckard
1969-5-28
2233
Colusa
on road above and w Fouts Springs
762
Comment
HSC45721
Lotus humistratus
M. Alcasas
1978-4-22
45
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
JEPS80180
Lotus humistratus
L. R. Heckard with J. Hickman
1980-7-3
5332
Colusa
just w Summit Springs (sw Snow Mt., ca 10 mi w of Stonyford, Colusa-Lake County boundary); Snow Mt.
1548
Comment
UCR206894
Lotus humistratus
George K. Helmkamp, E. A. Helmkamp
2009-3-11
14363
Colusa
Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams, on the north side of Salt Creek
162
Comment
JEPS110414
Lotus purshianus var. purshianus
Lowell Ahart
2006-8-9
13112
Colusa
Gravel bar on the south side of Stony Creek, at Mine Camp, about 3 1/2 miles (air) west of Stonyford
455
Comment
UC725836
Lotus purshianus var. purshianus
A. A. Heller
1919-6-8
13243
Colusa
Ladoga
Comment
UCD78332
Ludwigia hexapetala
B. J. Grewell
2006-7-11
06- 17 -LU
Colusa
Delevan National Wildlife Refuge. Managed seasonal pond at SE corner of refuge, north of Maxwell Road, immediately west of Colusa Basin Drain.
17
Comment
CHSC33400
Lupinus
Rene T. Retuta
1978-4-4
8
Colusa
Ca. 0.3 mi w of jct. of Hwys. 20 and 16, s side of Bear Creek, ca 18 mi. sw of Williams.
579
Comment
HSC89790
Lupinus albifrons
L. Blackford, S. Branch, D. Malm
1988-4-16
71
Colusa
15.3 mi. off Hwy. 20 on Walker Ridge Rd.
915
Comment Read comments Aug 20 2014
HSC91367
Lupinus albifrons
A. Smith, A. Eller, B. Hoffman
1989-4-15
23
Colusa
3 mi. SW of Digger Pine Campground, on Goat Mtn. Rd.
152
Comment
UCD105904
Lupinus albifrons
Beecher Crampton
1975-4-21
9163
Colusa
1.5 miles southeast of Sites.
Comment
UCD41127
Lupinus albifrons
K. Arhangelsky
2002-3-28
146
Colusa
Eastern foothills of inner north coast range, Capay Valley. Cache Creek Riparian Preserve.
Comment
UCD56933
Lupinus albifrons
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3535
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. Thompson Canyon.
344
Comment
CAS-BOT-BC198401
Lupinus albifrons var. albifrons
Mrs. H. C. Cantelow
1940-3-10
s.n.
Colusa
11 miles west of Williams
Comment
POM163513
Lupinus albifrons var. albifrons
Roxana S. Ferris
1926-4-23
6422
Colusa
Near summit on grade. Williams- Stonyford Road.
Comment
UCR206371
Lupinus albifrons var. albifrons
George K. Helmkamp, E. A. Helmkamp
2009-3-11
14365
Colusa
Inner North Coast Range Foothills, along CA-20, 9.7 miles southwest of Williams, on the north side of Salt Creek
162
Comment
POM276309
Lupinus albifrons var. eminens
Lyman Benson
1933-4-16
4324
Colusa
Abbott Mine; Inner North Coast mountain range; north fork Cache Creek
762
Comment
HSC45687
Lupinus bicolor
Patricia Shesgreen
1978-4-22
32
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
SBBG128983
Lupinus bicolor
G. K. Helmkamp, E. A. Helmkamp
2011-4-1
17131
Colusa
Antelope Valley, along Maxwell-Sites Rd, 0.4 mi SE of Sites
93
Comment
SEINET3271563
Lupinus bicolor
George K. Helmkamp, E. A. Helmkamp
2009-3-11
14383
Colusa
Sacramento Valley; on the south side of CA-20 just west of the junction with Freshwater Road, northwest edge of Williams
49
Comment
UCD64419
Lupinus bicolor
Craig D. Thomsen
2000-4-12
2170
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
HSC83318
Lupinus densiflorus var. aureus
C. G. Phillips, L. Cole, S. A. Haultain, K. B. Barrows
1984-4-29
34
Colusa
Bear Valley, Bear Valley Rd.
Comment
POM20193
Lupinus densiflorus var. aureus
Roxana S. Ferris
1917-4-14
584
Colusa
7 miles west of Arbuckle, along Sand Creek. Arbuckle-Ramsey Road.
Comment
HSC14822
Lupinus densiflorus var. aureus
D. R. Junell
1965-4-18
29
Colusa
2 mi. E on Hwy. 16 from junction with Hwy. 20
Comment
HSC85822
Lupinus densiflorus var. aureus
David Munger, Jeff Dunk, Tallchief Comet
1987-4-12
72
Colusa
Comment
SEINET10838182
Lupinus densiflorus var. aureus
J. P. Kroessig
1977-4-16
Kroessig 9
Colusa
Corolla yellow-white, pleasantly scented. Large population ca. 0.3 Mi. Sw of Jct of hwys 20 and 16, s side of bear creek, ca 18 mi. Sw of williams. Wilbur Springs quad, 15'. S central border of sec 36, t14n, r5w. Open foothill Woodlands.
322
Comment
CAS-BOT-BC8380
Lupinus formosus subsp. formosus
Amos Arthur Heller
1940-4-21
15543
Colusa
US Hwy 99W, 2 miles S of Williams
Comment
CAS-BOT-BC8485
Lupinus formosus var. robustus
Amos Arthur Heller; H. E. Brown
1902-5-20
5573
Colusa
Near College City
Comment
POM276455
Lupinus formosus var. robustus
Lyman D. Benson
1933-4-16
4335
Colusa
5 miles south of Arbuckle, Sacramento River Watershed, Sacramento Valley.
91
Comment
UC710400
Lupinus formosus var. robustus
C. P. Smith
1946-4-26
46225
Colusa
Hiway 99w about 2 mi w College City (Arbuckle - 1.5 mi s); Arbuckle
Comment
CHSC106710
Lupinus luteolus
Barbara Ertter
1989-7-1
8616
Colusa
Road to Goat Mt Lookout, 0.4 mi S of Rt M-10 (Bear Creek-Fouts Spring Rd) at head of S fk Stony Creek, ca 12 airmiles WSW of Stonyford.
1371
Comment
JEPS81270
Lupinus luteolus
L. R. Heckard and J. C. Hickman
1982-7-5
5878
Colusa
slope below (s) Summit Springs (s side of Snow Mt.); , s of Summit Springs
1500
Comment
SBBG122950
Lupinus luteolus
B. Ertter
1989-7-1
8616
Colusa
rd to Goat Mtn lookout, 0.4 mi S of Bear Crk-Fouts Spring Rd, head of S Fk of Stony Crk
1371
Comment
SEINET5558918
Lupinus luteolus
H. S. Gentry, S. Koch
1962-1
19769
Colusa
20 mi. W of Williams, along Rt. 20.
396
Comment
CDA27487
Lupinus microcarpus var. densiflorus
L. Ahart
2003-7-14
10390
Colusa
On the east and west sides of Bear Valley Road, about 1/4 mile north of the intersection of Bear Valley Road and Wilber Springs Road and bridge.
Comment
CHSC30054
Lupinus microcarpus var. densiflorus
D. Greenstein
1977-4-11
12
Colusa
Salt canyon n side of Salt Creek, Hwy 20, 10 mi wsw of Williams.
Comment
SBBG114088
Lupinus microcarpus var. densiflorus
R. Riggins
1982-5-30
1448
Colusa
Ladoga-Leesville Rd, 4.4 mi N Leesville
457
Comment
UCD66534
Lupinus microcarpus var. microcarpus
Craig D. Thomsen
2000-6-23
2421
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
HSC91380
Lupinus nanus
Robin Bencie, James Jones, Rich Dwerlkotte
1989-4-15
19
Colusa
3 times SW of Digger Pine Campground on Goat Rd.
152
Comment
UC73206
Lupinus nanus
Miss M. Alice King
1905-1
Colusa
near College City; Sacramento Valley, near College City
Comment
UCD33935
Lupinus nanus
Beecher Crampton
1958-4-21
9166
Colusa
1 mile west of Lodoga.
Comment
CHSC27819
Lupinus succulentus
Laurie L. Pate
1978-4-8
87
Colusa
5.1 mi w of Walker Ridge Road, Hwy 20.
457
Comment
CHSC77930
Lupinus succulentus
Jean Witzman; Beth Hendrickson
1999-4-19
Colusa
Vicinity of Logan Ridge and Golden Gate.
152
Comment
SEINET5586445
Lupinus succulentus
Richard R. Halse
2013-1
8736
Colusa
Along the Leesville Road ca. 1. 8 miles northwest of its junction with State Hwy. 20, west of Williams.
85
Comment
UCD56925
Lupinus succulentus
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3528
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. Near headwaters of Craig Canyon.
359
Comment
UCD66529
Lycium barbarum
Craig D. Thomsen
2000-4-28
2230
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on north side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 2.80. Just west of massive valley oak along Bear Creek, near base of Hwy 20 fill slope.
300
Comment
RSA74314
Lycopus americanus
Milo S. Baker
1946-9-5
11628
Colusa
Along Hwy in water ditch betw Colusa & Williams.
Comment
CHSC107290
Lythrum californicum
L. P. Janeway; B. Castro
2011-7-9
10509
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 1.5 km southeast of Funks Reservoir and 0.1-0.6 km northeast of Tehama-Colusa Canal. Edges of swale feeding south side of the marsh; at the only spot of bulrush.
49
Comment
CHSC94496
Lythrum californicum
Lowell Ahart
2006-8-9
13160
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
UC1191570
Lythrum californicum
Herbert L. Mason, Verne Grant
1946-8-7
12977
Colusa
8 mi n of Colusa (Butte Sink); Butte Sink
Comment
CHSC86838
Lythrum hyssopifolia
Jenny Marr; Heidi West, Caroline Warren, Natalie Wight
1998-6-11
Colusa
Vicinity of Funks Creek, Logan Ridge, Golden Gate, and Antelope Valley.
121
Comment
UCD66929
Lythrum hyssopifolia
Craig D. Thomsen; G. Harrington
2008-7-6
2773
Colusa
BLM Payne Ranch. Lands to the SW of the jct of Hwys 20 and 16. Western side of ranch, near ridge trail that follows the border of Colusa/Lake Counties. Dunsfield Flat stock pond.
609
Comment
CDA34965
Lythrum tribracteatum
Barbara Ertter, Elizabeth Neese, Laura Fujii, Dawn Espindola
1989-10-21
8870
Colusa
Southeast end of East Park Reservoir, north of Lodoga.
Comment
CHSC106708
Lythrum tribracteatum
Barbara Ertter; Elizabeth Neese, laure Fujii, Dawn Espindola
1989-10-21
8870
Colusa
SE end of East Park Reservoir N of Lodoga, narrow strand on shaly substrate.
365
Comment
CHSC115003
Lythrum tribracteatum
Lowell Ahart
2015-4-28
20113
Colusa
North side of Maxwell-Colusa Road, about 5 1/2 miles east of Maxwell.
53
Comment
CHSC86784
Lythrum tribracteatum
Jenny Marr; Heidi West, Caroline Warren
1998-7-1
Colusa
Vicinity of Sites, Golden Gate, Stone Corral Creek, and Funks Creek.
103
Comment
CHSC94480
Lythrum tribracteatum
Lowell Ahart
2006-8-9
13162
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
JEPS107096
Lythrum tribracteatum
Barbara Ertter with Elizabeth Neese, Laura Fujii, Dawn Espindola
1989-10-21
8870
Colusa
SE end of East Park Reservoir N of Lodoga
Comment
OBI71983
Lythrum tribracteatum
Barbara Ertter, Elizabeth Neese, Laura Fujii, Dawn Espindola
1989-10-21
8870
Colusa
SE end of East Park Reservoir N of Lodoga
366
Comment
SD211626
Lythrum tribracteatum
Barbara Ertter, Elizabeth Neese, et al
1989-10-21
8870
Colusa
Southeast end of East Park Reservoir North of Lodoga, narrow strand on shady substrate
366
Comment
UCD66865
Lythrum tribracteatum
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5068
Colusa
BLM Payne Ranch. Lands to the southwest of the intersection of Hwy 16 and Hwy 20. Northwest corner of ranch. Along ridge trail on the border of Lake and Colusa counties. East side of trail around stock pond.
609
Comment
JEPS110182
Madia elegans subsp. densifolia
Lowell Ahart
2006-8-22
13229
Colusa
N side and under the bridge across Stony Creek, just N of Stonyford.
347
Comment
CHSC101633
Madia gracilis
David W. Isle; Rhonda Isle, Ann Isle
2003-5-15
1631
Colusa
About 6 miles W of Stonyford; N aspect of serpentine chaparral slope S of M-10 (18N01.2) and just W of OHV Trail 30 (18N78) jct. On 8 August 2001 Trough Fire burn site. MDB and M.
585
Comment
CHSC89612
Madia gracilis
B. Castro; Aric Lester, Shirley Innecken
2004-4-12
1446
Colusa
Vicinity of Antelope Valley, Huffmaster Road, and headwaters of Lurline Creek. Near bottom of secluded E-W trending side-canyon.
167
Comment
JEPS80125
Madia gracilis
L. R. Heckard with J. Hickman
1980-7-1
5283
Colusa
just above trail entrance to roadless area (above Summit Springs) (Summit Springs to Frog Lake, Colusa-Lake Co. boundary, ca. 10 mi w of Stonyford); Snow Mt.
1645
Comment
JEPS83808
Madia gracilis
L. R. Heckard with J. Hickman
1980-7-1
5283
Colusa
just above trail entrance to roadless area (above Summit Springs) (Summit Springs to Frog Lake, Colusa-Lake Co. boundary, ca. 10 mi w of Stonyford); Snow Mt.
1645
Comment
UCD66442
Madia sativa
Craig D. Thomsen
2000-4-28
2191
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
UC725449
Malacothamnus fremontii
A. A. Heller
1940-6-7
15719
Colusa
below the road near the foot of the grade e Lodoga; Sites-Lodoga road
Comment Read comments Sep 25 2006
UCD81259
Malacothamnus fremontii
Ellen Dean; G. Harrington, R. Willmarth, B. Rice, and C. Thomson
2009-4-8
5424
Colusa
BLM Bear Creek (Payne) Ranch. Lands to the SW of the intersection of Hwys. 16 and 20. Just north of the road leading up from the confluence of Bear and Cache Creeks.
323
Comment
UCD82630
Malacothamnus fremontii
Jack Alderson
2009-8-6
26
Colusa
BLM Bear Creek (formerly Payne) Ranch. Lands to the SW of junction of Hwys 16 and 20. Southern part of the ranch, just N of confluence of Bear and Cache Creeks.
243
Comment
CHSC115622
Malacothamnus fremontii
David Isle; Frank Elliott
2014-6-11
2134
Colusa
Northern Sacramento Foothills: Frand and Judy Elliott Ranch, 1 mile S of Rail Canyon Rd. Jct. with Ssites-Lodoga Rd. and 1/2 mile S of Sites-Lodoga Rd. SE of Elliott home. (GPSs for Rail Canyon Rd. Jct./Sites-Lodoga Rd.) 10S-0546594E, 4356133N).
Comment
CHSC80037
Malacothamnus helleri
L. P. Janeway; Joyce Lacey-Rickert
2000-6-1
6778
Colusa
Vicinity of Grapevine Creek, Hayes Canyon, and Eggman Canyon.
335
Comment
POM282851
Malacothamnus helleri
Lyman Benson
1933-6-26
4488
Colusa
Abbott mine.
549
Comment
UC768593
Malacothrix clevelandii
R. F. Hoover
1938-4-24
3212
Colusa
Upper Sand Creek
Comment
CDA11410
Malacothrix floccifera
G. F. Hrusa, K. van Katwyk
1995-4-22
12131
Colusa
Inner North Coast Ranges; Leesville Rd. at summit of ridge immed. E of N end of Bear Valley.
Comment
CHSC27868
Malacothrix floccifera
Robin Ondricek
1978-4-8
5
Colusa
Salt Canyon, n side of Salt Creek, Hwy 20, 11 mi wsw of Williams.
143
Comment
UC638648
Malacothrix floccifera
Ethel Crum
1938-5-8
2039
Colusa
4 mi se Wilbur Springs; Inner North Coast Range
Comment
UCD66682
Malacothrix floccifera
Craig D. Thomsen
2000-5-11
2309
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
RSA726801
Malvella leprosa
L. Ahart
2007-7-7
14261
Colusa
About 1.25 miles east of River Road, about 17 miles west of Gridley.
20
Comment
UC1368667
Malvella leprosa
L. M. Moe
1969-7-29
98
Colusa
along Butte Creek ca. 3 mi. n.e. Colusa (also along rd. of Butte Creek Outing Club property); Butte Creek
Comment
RSA121079
Malvella leprosa
H. S. Yates
1936-8-14
6130
Colusa
3 miles S. of Colusa
15
Comment
UC71659
Marah fabacea
Miss Alice King
1905-1
Colusa
College City
Comment
CHSC84939
Marsilea vestita subsp. vestita
Lowell Ahart
2003-10-23
10669
Colusa
On the east strand of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
UC1051742
Medicago lupulina
Helen K. Sharsmith
1953-6-20
4298
Colusa
Little Stoney Creek Inner North Coast Ranges, Mendocino National Forest (slopes)
762
Comment
UCD56908
Medicago polymorpha
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3511
Colusa
BLM Payne Ranch. In Craig Canyon. Southwest of intersection of Hwy. 16 and Hwy. 20.
326
Comment
UCR205147
Medicago sativa
George K. Helmkamp, E. A. Helmkamp
2008-10-14
14253
Colusa
Sacramento Valley, along CA-20, 0.2 mile east of the Sutter County line
9
Comment
UCD107923
Medicago sativa
Beecher Crampton
1963-8-5
6872
Colusa
3.5 miles south of Grimes.
Comment
CHSC112266
Melica californica
Lowell Ahart; John Dittes, Josephine Guardino
2013-4-26
18639
Colusa
Inner North Coast Range. North side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
UCD64416
Melica californica
Craig D. Thomsen
2000-4-12
2162
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UCD86456
Melica californica
Beecher Crampton
1958-4-21
4728
Colusa
Colusa-Yolo Co. line: 7.4 miles northwest of Rumsey. Along State Hwy. 16. Junction Bear and Cache Creeks.
Comment
SEINET11684249
Melica californica
Unknown
1971-1
908
Colusa
3.3 mi N of Stony Ford on Elk Creek Road
Comment
CHSC100265
Melica harfordii
D. Isle
1988-4-13
1510
Colusa
Mendocino National Forest - North Coast Ranges. Middle Fork Stony Creek Watershed. Mellow-D Ranch meadow just north of 1st bad erosion channel in area burned during 1987 Fouts Fire.
731
Comment
UCD56672
Melica torreyana
Jack Alderson
2007-3-25
8
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
555
Comment
UCD84546
Melica torreyana
Ellen Dean; C. Thomsen, T. Hansen, and windfarm meeting
2010-6-11
6144
Colusa
Walker Ridge. Along Walker Ridge Road, N of turnoff to Indian Valley Reservoir but S of Til Jones Spring. Many old undeveloped roads here.
817
Comment
POM20221
Melilotus albus
Roxana Stinchfield
1916-7-9
403
Colusa
Overflow land along Sacramento River, Phillips Ranch.
Comment
RSA724820
Melilotus albus
L. Ahart
2006-9-26
13349
Colusa
South side of the Delevan National Wildlife Refuge, north side of Maxwell Road about 3 miles west of Colusa Princeton Road, about 5 1/2 mils east of Maxwell.
24
Comment
RSA724950
Melilotus indicus
L. Ahart
2006-8-9
13168
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
348
Comment
UCD64430
Melilotus indicus
Craig D. Thomsen
2000-4-28
2211
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
CDA16093
Melilotus officinalis
G. F. Hrusa
1999-5-16
15050
Colusa
North Coast Ranges; Little Stony Creek
457
Comment
UCD169976
Melilotus officinalis
G. F. Hrusa
1999-5-16
15050
Colusa
Little Stony Creek.
457
Comment
CHSC94453
Mentha canadensis
Lowell Ahart
2006-8-9
13166
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
JEPS110099
Mentha canadensis
Lowell Ahart
2006-8-9
13166
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
CHSC84983
Mentha spicata
Lowell Ahart
2003-10-23
10666
Colusa
Along Squaw Creek, just south of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
UCD163656
Mentzelia laevicaulis
Craig Thomsen
1998-6-10
1954
Colusa
Bear Valley. About 7 miles north of Hwy 20.
Comment
CDA36623
Mentzelia laevicaulis
R. Lawley
Colusa
Mendocino National Forest, Stonyford.
0
Comment
UCD170080
Mentzelia micrantha
Jack Alderson
2016-5-14
s.n.
Colusa
BLM Bear Creek Ranch (formerly Payne Ranch); 5500 feet (1675 m) south of the intersection of Highway 20 and the Colusa County line.
499
Comment
UCD163868
Micranthes californica
Craig D. Thomsen
2001-4-12
2465
Colusa
Bear Creek Canyon, first tributary above Sulphur Creek confluence with Bear Creek. About 3 miles north of Hwy 20.
Comment
UCD63030
Micranthes californica
Ellen Dean; C. Thomsen, N. Voegtly, J. Alderson, G. Harrington
2008-3-30
4682
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Eula Canyon.
313
Comment
POM174563
Micropus californicus
Roxana S. Ferris
1926-4-23
6431
Colusa
Near summit on grade. Williams- Stonyford Road
Comment
UCD162998
Micropus californicus
Craig D. Thomsen
2000-4-28
2183
Colusa
Bear Creek Botanical Management Area. Roadside shoulder of Hwy 20 (south side), about 0.3 mile west of Hwy 20/16 intersection.
345
Comment
CDA32824
Micropus californicus
P. Hiatt
1979-4-26
Colusa
North end of Bear Valley at Bartlett Springs Road.
0
Comment
JEPS40618
Micropus californicus var. californicus
W. L. Jepson
1932-5-8
16279
Colusa
Lodoga
Comment
RSA424740
Microseris
Aaron Liston, M. Blumler
1987-4-26
668 -7
Colusa
East Park Reservoir, 3.2 miles E of Stonyford
Comment
UC71639
Microseris campestris
Miss Alice King
1905-1
Colusa
College City
Comment
UCD162974
Microseris douglasii
Jack Major
1963-5-4
s.n.
Colusa
Bear Valley. (Exact location unknown. Coordinates estimated by label maker.)
396
Comment
CHSC81249
Microseris douglasii subsp. douglasii
Caroline Warren; Jenny Marr, Heidi West, Natalie Wight
1998-6-11
Colusa
Vicinity of Funks Creek and Logan Ridge.
106
Comment
CHSC86872
Microseris douglasii subsp. douglasii
B. Castro
2003-4-3
1413
Colusa
Vicinity of Sites, Golden Gate, and Funks Ck.
82
Comment
RSA424741
Microseris douglasii subsp. douglasii
Aaron Liston, M. Blumler
1987-4-26
668 -4
Colusa
East Park Reservoir, 3.2 miles E of Stonyford
Comment
UCD163885
Microseris douglasii subsp. douglasii
Craig D. Thomsen
2002-4-10
2598
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection.
Comment
UCD64514
Microseris douglasii subsp. douglasii
Craig D. Thomsen
2000-4-12
2101
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UC92188
Microseris douglasii subsp. douglasii
Brandegee
April 1889
Colusa
Comment
CHSC86599
Microseris elegans
Jenny Marr; Heidi West, Joyce Lacey-Rickert, Caroline Warren
1998-5-8
Colusa
Vicinity of Sites and Antelope Valley.
121
Comment
UCD163671
Microsteris gracilis
Craig Thomsen
1999-4-15
1971
Colusa
Bear Valley. About 7 miles north of Hwy 20.
Comment
UC726146
Mimulus bolanderi
A. A. Heller
1940-6-7
15720
Colusa
e Lodogo (below the road on the Sites-Lodogo road near the end of the grade)
Comment
JEPS75843
Mimulus breweri
L. R. Heckard
1974-9-10
3910
Colusa
ne slope West Peak; Snow Mt.
2011
Comment
POM21052
Mimulus cardinalis
Roxana Stinchfield
1916-7-9
417
Colusa
Philip's Ranch, near Sycamore.
Comment
UCD82726
Mimulus cardinalis
Craig Thomsen; G. Harrington
2009-5-14
2909
Colusa
Colusa County on Walker Ridge: about 200 yds. south of spur road, 1/2 mile east of Walker Ridge Road, en route to Eaton Springs.
813
Comment
JEPS80223
Mimulus guttatus
L. R. Heckard and J. Hickman
1980-7-3
5380
Colusa
sw slope Snow Mt. (below pipe outlet from spring); Summit Springs
1554
Comment
RSA0118612
Mimulus guttatus
Lowell Ahart
2013-5-1
18688
Colusa
Inner North Coast Range. North of the wash and State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
UCD82504
Mimulus guttatus
Craig Thomsen; G. Harrington
2009-5-12
2864
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
710
Comment
UC1049541
Mimulus kelloggii
Rimo Bacigalupi
1950-4-16
3105
Colusa
vicinity Colusa-Glenn County line (ridge above Red Bridge Camp and the confluence of the North amd Middle Forks of Stony Creek); Inner North Coast Ranges, Mendocino National Forest
579
Comment
UC1051505
Mimulus layneae
Helen K. Sharsmith
1953-6-20
4290
Colusa
5 mi beyond Trough Springs (on road to Goat Mountain); Inner North Coast Ranges, Mendocino National Forest
1280
Comment
UC1191131
Mimulus microphyllus
Herbert L. Mason
1953-5-5
14519
Colusa
0.25 above junction of Little Stoney Creek and Trout Creek (at sharp bend in road); Little Stoney Creek drainage
Comment
UCD122648
Mimulus microphyllus
R. A. Christison
1960-4-17
28
Colusa
on road to Wilbur Springs, 2 miles north of State Highway 20.
Comment
UCD81724
Mimulus nasutus
Ellen Dean; K. Mawdsley,G. Harrington,R. Wilmarth,B. Rice,E. Salvia
2009-5-27
5728
Colusa
Walker Ridge. Along Walker Ridge Road. Til Jones Spring area on W side of road, ca. 6.5 road mi N of junction with Hwy 20. W side of road.
833
Comment
UCD82576
Mimulus nudatus
Craig Thomsen
2008-6-12
2766
Colusa
Bear Creek (formerly Payne) Ranch. South side of Hwy 20, ca. 0.25 mi W of Hwy 16. West and SW of the corral that is located at the junction of Hwy 16 and 20.
Comment
RSA724962
Mimulus pilosus
L. Ahart
2006-8-9
13113
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
348
Comment
NY90769
Mimulus rattanii
V. Rattan
06 1882
s.n.
Colusa
Above Font's Spr. Coast Mts. North of San Francisco Bay.
Comment
CAS-BOT-BC388583
Minuartia douglasii
Annetta Carter
1938-5-7
1377
Colusa
Comanche Hills, 4 miles north of Rumsey, Inner North Coast Range
259
Comment
CHSC77926
Minuartia douglasii
Beth Hendrickson; Jean Witzman
1999-4-7
Colusa
Vicinity of Antelope Valley, Funks Creek, and Logan Ridge.
152
Comment
CHSC86967
Minuartia douglasii
B. Castro
2003-5-15
1436
Colusa
Vicinity of Logan Ridge, Sulphur Gap and Lurline Creek. Above dirt rd paralleling a S-trending canyon.
179
Comment
UC1613426
Minuartia douglasii
Charles M. Belshaw
1937-4-25
2876
Colusa
vicinity of Cook's Spring (Devil's Ridge); Inner N. Coast Range, Devil's Ridge
Comment
UCD57309
Minuartia douglasii
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3680
Colusa
BLM Payne Ranch. Lands to the southwest of junction of Hwy. 20 and Hwy. 16. Thompson Canyon, near juncture with Craig Canyon.
362
Comment
UCD82137
Minuartia douglasii
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5670
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
869
Comment
UCD82385
Minuartia douglasii
Craig Thomsen; G. Harrington
2009-5-12
2827
Colusa
Colusa County. Walker Ridge. South of spur road en route to Eaton Springs, about 1/2 mile east of Walker Ridge Rd. About 100 yds south of road (ravine with spring below).
822
Comment
JEPS81413
Minuartia nuttallii subsp. gregaria
L. R. Heckard and J. C. Hickman
1982-7-9
6021
Colusa
just e Lookout (Colusa-Lake Co. boundary); Goat Mt.
1859
Comment
CAS-BOT-BC435026
Mollugo verticillata
Edward Lee
1934-8-9
1010
Colusa
Four miles north of Willows, Sacramento Valley
Comment
IRVC29625
Monardella
Mark A. Elvin, Mark S. Brunell, David Isle
2006-8-3
5021
Colusa
Snow Mtn; Summit Spring Trail; 1.4km W of Snow Mtn West summit; 800m N of Cedar Camp. Southern Northern Inner Coast Ranges
1989
Comment
CHSC92639
Monardella odoratissima subsp. odoratissima
D. Isle
2005-9-14
1174
Colusa
Mendocino National Forest--North Coast Ranges. Middle Fork Stony Creek Watershed. Meadow west of Angel Spring, Snow Mountain Wilderness. 10S 0522348E 4358185N = Angel Springs.
Comment
UCD67691
Monardella sheltonii
D. Sanchez-Mata
1996-6-27
s.n.
Colusa
Williams, Blue Ridge, Bear Creek.
320
Comment
CHSC106248
Monardella villosa
B. Castro; L. P. Janeway
2001-6-3
1261
Colusa
Inner North Coast Ranges. 'Til Jones Spring' at headwaters of Freshwater Branch of E. Fork Sulphur Ck, 0.6 mi E of top of Walker Ridge. Ca 3 air mi W of S end of Bear Valley, and 1.75 air mi SSE of Cold Spring Mtn. Just downslope from Walker Ridge Rd., in opening in surrounding serpentine chaparral.
822
Comment
SEINET10582138
Monardella villosa
A. Graff
1993-7-25
Graff 367
Colusa
Bear Valley Rd., 2.2 miles north of Rte. 20, on right road cut. Locally infrequent on sandstone cliff, beneath Pinus coulteri, Quercus agrifolia, Arctostaphylos, sp. Past bloom.
Comment
UCD22648
Monardella villosa subsp. sheltonii
Laura F. Galloway
1988-5-1
6
Colusa
Leesville Road, 11.9 miles north of SR20.
487
Comment
SD241081
Monardella villosa subsp. villosa
Mark A. Elvin, David Isle, Mark Brunell
2006-8-3
4991
Colusa
Southern Northern Inner Coast Ranges: Mendocino Nat. Forest; E face of Snow Mountain, Stony Creek along M10.
609
Comment
UCD81712
Monardella villosa subsp. villosa
Ellen Dean; K. Mawdsley,G. Harrington,R. Wilmarth,B. Rice,E. Salvia
2009-5-27
5718
Colusa
Walker Ridge. Along Walker Ridge Road. Til Jones Spring area on W side of road, ca. 6.5 road mi N of junction with Hwy 20. W side of road.
833
Comment
UCD82537
Monardella villosa subsp. villosa
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5690
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
817
Comment
UCR219956
Monardella villosa subsp. villosa
Mark A. Elvin, David Isle, Mark S. Brunell
2006-8-3
4991
Colusa
Northern Inner Coast Ranges, Mendocino National Forest, east face of Snow Mountain, Stony Creek along M10
610
Comment
UCR261722
Monardella villosa subsp. villosa
Ann Howald
2003-5-30
2356 A
Colusa
Inner North Coast Ranges, Indian Valley, east side of East Park Reservoir, c. 3 miles north of Lodoga, ridge west of Serenity camping area
373
Comment
JEPS15267
Monolopia major
Rimo Bacigalupi with G. L. Stebbins, Calvin McMillan, Peter Kamb, and S. Galen Smith
1950-4-16
3118
Colusa
base grade (Bartlett Springs road) (western edge of valley); inner edge of easternmost North Coast Ranges, Bear Valley
426
Comment
UC1484326
Monolopia major
G. Hannan
1977-4-22
204
Colusa
12.4 mi n CA Hwy 20 (between Clearlake Oaks and Williams, 1.6 mi s of Brim Rd.)
411
Comment
UCD163879
Monolopia major
Craig D. Thomsen
2002-3-27
2574
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection.
Comment
UCD50183
Muhlenbergia andina
Craig D. Thomsen; Art Shapiro
2004-9-16
s. n.
Colusa
In large patch in roadcut along Goat Mountain Road, Colusa County.
Comment
JEPS15550
Muhlenbergia filiformis
G. Thomas Robbins with L. R. Heckard
1956-7-25
3707
Colusa
in meadow along trail due s Snow Mt. East (skirting eastern base of ridge forming Snow Mt. West)
1981
Comment
UC1056271
Muhlenbergia rigens
Rimo Bacigalupi and Arthur Holmgren
1950-4-26
3166
Colusa
eight mi nw Maxwell (along road to Sites, in canyon between forst hills on extreme w edge of valley); Sacramento Valley
Comment
CAS-BOT-BC514196
Muilla maritima
Roxana S. Ferris
1917-4-12
501
Colusa
4 miles east of Williams
Comment
CAS-BOT-BC83273
Myosurus minimus
Roxana S. Ferris
1918-4-10
1443
Colusa
4 miles east of Williams.
Comment
UC1028301
Myosurus minimus
George B. Rossbach
1955-4-9
270
Colusa
3 mi E of Maxwell; Sacramento Valley
18
Comment
UCD18836
Myosurus minimus
Vernal Pool Team 2001; Carol Witham and Jennifer Buck
2001-4-30
143
Colusa
2 mi. south of the town of Colusa along Hwy 20, east of Hwy 20 and the Colusa Airport, Dolan Ranch site, pool # DOL001, UTMs: 10S0587786; 4336302.
Comment
UC1101349
Myosurus minimus subsp. apus
Herbert L. Mason
1953-4-5
14510 a
Colusa
3 mi e of Maxwell
Comment
CHSC28129
Myosurus sessilis
K. R. Stern
1979-5-5
Colusa
Ca. 0.25 mi w of intersection of Hwy 20 and Int. Hwy 5. Vernal pool on n side of road, ca. 0.5 mi nw of Williams.
152
Comment
UC1738124
Myosurus sessilis
D. E. Stone
1956-10-9
1- 8 -1
Colusa
3 mi E of Maxwell ( on Maxwell Rd.)
Comment
POM312437
Myosurus sessilis
H. L. Mason
1953-4-5
14510
Colusa
3 miles east of Maxwell
Comment
UCR227337
Najas graminea
Ellen Dean, Gordon Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5106
Colusa
BLM Payne Ranch, lands to the southwest of the junction of Hwys 16 and 20. Western edge of ranch on ridge above Cache Creek Canyon
511
Comment
UCD138157
Najas guadalupensis subsp. guadalupensis
Herbert L. Mason; Verne Grant
1946-8-15
13008
Colusa
2 miles west of Colusa on Williams highway by bridge.
Comment
CHSC49580
Nassella cernua
Vernon Oswald
1984-5-2
1165
Colusa
Fouts Springs Rd. (M10) in the Mendocino National Forest, 4.6 mi w of Stonyford.
487
Comment
UCD82446
Nassella lepida
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5662
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
861
Comment
CHSC80123
Nassella pulchra
L. P. Janeway; B. Castro
2000-4-10
6661
Colusa
Vicinity of Lurline Creek and Sulphur Gap.
124
Comment
UCD87543
Nassella pulchra
Freed W. Hoffman
1942-4-23
2253
Colusa
Near Maxwell.
Comment
UCD87673
Nassella pulchra
D. Sanchez-Mata
1998-7-9
s.n.
Colusa
Bear Valley. Destanella Flat-Walker Ridge.
450
Comment
UCD81229
Navarretia
Ellen Dean; K. Mawdsley, B. Rice, G. Harrington, and J. Alderson
2009-5-6
5566
Colusa
Payne Ranch, lands to the SW of the jct. of Hwys. 16 and 20. Destanella Flat area on the S side of Hwy. 20. West side of Destinella Flat.
446
Comment
JEPS70256
Navarretia cotulifolia
W. L. Jepson
1920-5-23
8965
Colusa
near Leesville (foot of Bartlett Grade, w side of Bear Valley); Bear Valley, Bartlett Grade
426
Comment
RSA424699
Navarretia eriocephala
Aaron Liston, M. A. Blumler
1987-4-26
668 -5
Colusa
East Park Reservoir, 3.2 miles E of Stonyford
Comment
CHSC88556
Navarretia jepsonii
L. P. Janeway
2001-6-6
7127
Colusa
Inner North Coast Ranges. Deadshot Spring; about 1.9 km (air) east of Walker Ridge Road.
716
Comment
JEPS104075
Navarretia jepsonii
Lowell Ahart
2003-7-14
10385
Colusa
Field on the south side of Highway 20, ca 2 mi sw of the intersection of Highway 20 and Bear Valley Rd, ca 21 mi (by road) sw of Williams.
520
Comment
UC908635
Navarretia jepsonii
Herbert L. Mason
1946-5-31
12810 a
Colusa
near summit of Leesville Grade (drainage of n fork of Cache Creek); Cache Creek
548
Comment
UCR197901
Navarretia jepsonii
Calvin McMillan, Beecher Crampton (494F)
1949-9-25
s.n.
Colusa
18 miles east of Bartlett Springs
Comment
CAS-BOT-BC230318
Navarretia jepsonii
A. A. Heller
1940-6-7
15709
Colusa
7 miles N of Stonyford
Comment
RSA537266
Navarretia leptalea
P. H. Raven, Richard Snow
1959-9-11
14421
Colusa
Openings in forest of Pinus ponderosa, Dark Hollow Creek.
1860
Comment
CHSC107942
Navarretia leucocephala subsp. leucocephala
B. Castro; L. Janeway
2011-4-27
1866
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 5 air mi NW of Maxwell, 0.8 mi southeast of Funks Reservoir and 0.3 mi northeast of Tehama-Colusa Canal. At SW end of vernally moist swale which extends northeast of large +- saline/alkaline wetland/ marsh, in drying vernal pool bottom.
48
Comment
UCR225393
Navarretia nigelliformis
Ellen Dean, Gordon Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5082
Colusa
BLM Payne Ranch, lands to the southwest of the junction of Hwys 16 and 20. Northwestern part of ranch, along trail that follows the border of Lake and Colusa counties. South of junction with trail that heads down to the headwaters of Thompson Creek
429
Comment
CHSC85965
Navarretia nigelliformis subsp. nigelliformis
Jenny Marr; Heidi West, Joyce Lacey-Rickert, Caroline Warren
1998-5-8
Colusa
Vicinity of Sites and Antelope Valley.
137
Comment
UCD63775
Navarretia nigelliformis subsp. nigelliformis
Craig D. Thomsen
2008-5-31
2756
Colusa
BLM Payne Ranch, lands to the southwest of the junction of Hwys 20 and 16. Cowboy Camp area, west side of Hwy 16, 1 mile south of Hwy 20. In meadow, west of public viewing area between Bear Creek and hillslopes to the west.
279
Comment
CHSC1298
Navarretia pubescens
V. Holt
1935-5-12
Colusa
Stonyford.
365
Comment
UC584174
Navarretia pubescens
J. Clausen
1935-5-20
1014
Colusa
18 mi w Williams (on Bartlett Springs road)
Comment
JEPS105729
Navarretia tagetina
David Gowen
2004-5-18
83
Colusa
About 1.5 miles southeast of Stonyford at East Park Resevoir. Northwestern end, 1/3 mile W of the dam that drains to Little Stony Creek.
Comment
JEPS80198
Nemacladus capillaris
L. R. Heckard and J. C. Hickman
1980-7-3
5352
Colusa
just w Summit Springs (ca 10 mi w of Stonyford, Colusa-Lake county boundary); Snow Mt.
1548
Comment
UC1585893
Nemacladus capillaris
Barbara Ertter
1989-7-1
8599
Colusa
ca 12 air mi wsw Stonyford (road to Goat Mt. Lookout, 2.2 mi s of Rt M-10 (Bear Creek-Fouts Spring Rd) at head of South Fork Stony Creek); Stony Creek
1500
Comment
RSA537450
Nemacladus capillaris
Barbara Ertter
1989-7-1
8599
Colusa
Road to Goat Mt Lookout 2.2 miles S of Rt M-10 (Bear Creek-Fouts Spring Rd) at head of S Fk Stony Creek, ca 12 airmiles WSW of Stonyford.
1500
Comment
CHSC76510
Nemacladus montanus
Heidi West; Caroline Warren
1998-5-26
Colusa
Vicinity of Antelope Valley, Huffmaster Road, and Sites.
152
Comment
UCD82741
Nemacladus montanus
Craig Thomsen; G. Harrington
2009-5-14
2922
Colusa
Colusa County on Walker Ridge: southeast of Methany flat.
579
Comment
UC598446
Nemophila heterophylla
Milo S. Baker
April, 1938
Colusa
Williams Highway near Lake County Line; near Lake County Line
Comment
UC72014
Nemophila heterophylla
Miss M. Alice King
1905-1
Colusa
near College City (Sacramento Valley); , near College City
Comment
UCD66587
Nemophila heterophylla
Craig D. Thomsen
2000-4-12
2158
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
JEPS2989
Nemophila menziesii
Alice King
May, 1908
Colusa
College City
Comment
JEPS3136
Nemophila menziesii
Ruth Johnson
1915-4-6
Colusa
College City
Comment
JEPS94183
Nemophila menziesii var. menziesii
Vernon Oswald and Lowell Ahart
1998-4-21
8949
Colusa
Rd. 401 1.8 mi. n. Grapevine Pass (on the Sites-Lodoga Rd.)
472
Comment
UCD66962
Nemophila parviflora
Ellen Dean; Davis Botanical Society
2008-5-31
5006
Colusa
west of I-5 at Maxwell, east slope of Goat Mountain, along Goat Mountain Road, Cedar Grove Campground.
1311
Comment
UCR228648
Nemophila parviflora
Ellen Dean, Davis Botanical Society
2008-5-31
5006
Colusa
West of I-5 at Maxwell, east slope of Goat Mountain, along Goat Mountain Road, Cedar Grove Campground
1312
Comment
JEPS85842
Nemophila parviflora var. parviflora
Barbara Ertter
1989-7-1
8614
Colusa
ca 12 air mi wsw Stonyford (road to Goat Mt. Lookout, at bend in road, 1.7 mi s of Rt M-10 (Bear Creek-Fouts Spring Rd), at head of South Fork of Stony Creek); South Fork of Stony Creek, rd to Goat Mt. Lookout
1463
Comment
RSA537462
Nemophila parviflora var. parviflora
Barbara Ertter
1989-7-1
8614
Colusa
Road to Goat Mountain Lookout 1.7 miles S of Rt. M-10 (Bear Creek-Fouts Spring Road) at head of S Fork Stony Creek, ca. 12 airmiles WSW of Stonyford.
1463
Comment
UC1586079
Nemophila parviflora var. parviflora
Barbara Ertter
1989-7-1
8614
Colusa
ca 12 air mi wsw Stonyford (road to Goat Mt. Lookout, at bend in road, 1.7 mi s of Rt M-10 (Bear Creek-Fouts Spring Rd), at head of South Fork of Stony Creek); South Fork of Stony Creek, rd to Goat Mt. Lookout
1463
Comment
UC595048
Nemophila pedunculata
Annetta Carter
1938-5-8
1381
Colusa
6.6 mi s Lodoga; s of Lodoga
Comment
UC38962
Neostapfia colusana
J. Burtt Davy
1898-5-26
Colusa
near Princeton; ; Princeton, Colusa Co.
Comment
RSA0000499
Neostapfia colusana
Jos Burtt Davy
1898-05
s.n.
Colusa
Near Princeton.
Comment
CAS-BOT-BC400054
Nuphar polysepala
F. P. Cronemiller
1924-6-26
892
Colusa
Upper Letts Swamp
1371
Comment
UC1229784
Orobanche bulbosa
G. Newcomb, F. Chisaki
1958-6-23
1165
Colusa
North Coast Range, on John Smith Road John Smith Road; North Coast Range, John Smith Road
Comment
UCD66934
Orobanche bulbosa
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5083
Colusa
BLM Payne Ranch. Lands to the SW of jct of Hwys 16 and 20. Northwestern part of ranch, along trail that follows the border of Lake and Colusa Counties. South of junction with trail that heads down to the headwaters of Thompson Creek.
568
Comment
UC1187361
Orobanche californica subsp. grayana
Herbert L. Mason
1945-7-11
12647
Colusa
Near Butte Creek; Butte Lodge Outing Club, 3 miles above Colusa.
Comment
CHSC71441
Orobanche californica subsp. jepsonii
Vernon H. Oswald; Lowell Ahart
1998-7-15
9274
Colusa
Bartlett Springs Rd. 2.1 mi west of Bear Valley Rd., 0.8 mi east of Sawtelle Valley and Grapevine Flat roads. Along the edge of a meadow.
524
Comment
UCD163335
Orobanche fasciculata
Craig D. Thomsen
2009-5-3
2806
Colusa
Walker Ridge. Vicinity of Walker Ridge Rd., about 3 plus miles north of Hwy 20.
841
Comment
RSA0076585
Orobanche fasciculata
Frank W. Gould
1938-4-22
283
Colusa
At head of Capay Valley, west of Arbuckle.
Comment
SEINET5766934
Orobanche grayana var. jepsonii
H. P. Chandler
s.n.
Colusa
Princeton
Comment
UC71779
Orobanche vallicola
H. P. Chandler
1905-10-1
Colusa
Princeton
Comment
RSA402037A
Orthocarpus lithospermoides
Jens Clausen
1935-5-20
1018
Colusa
Ca. 27 mi W of Williams after having passed the Wilbur Springs road. Along Bear Creek.
Comment
POM231093
Orthocarpus lithospermoides var. bicolor
Jens Clausen
1935-5-20
1018
Colusa
Ca. 27 mi W of Williams after having passed the Wilbur Springs road. Along Bear Creek.
Comment
RSA516500
Orthocarpus lithospermoides var. bicolor
W. L. Jepson
1938-6-9
18964
Colusa
Mts. between Indian Valley and Bear Valley. Btw. Lake Co. and Colusa Co.
Comment
SEINET12270141
Orthocarpus lithospermoides var. bicolor
A. Carter, Kellogg, L.
1953-1
3239
Colusa
road to Leesville, 6 mi N of Wilbur Springs Junction
400
Comment
RSA430221
Orthocarpus purpurascens var. purpurascens
Eugene Tanimoto
1975-4-20
13
Colusa
Bear Valley Road, 8.7 miles north of State Highway 20.
Comment
JEPS80775
Osmorhiza berteroi
L. R. Heckard and J. C. Hickman
1981-7-30
5748
Colusa
Trout Creek trail Snow Mt. (se slope of mt.)
1645
Comment
SEINET519285
Osmorhiza berteroi
L. P. Janeway
1998-3-7
5710
Colusa
Along Pacific Ridge Rd. (16N06) 0.5 mi E of road to Spanish Ridge and Hough Springs.
1052
Comment
JEPS73443
Osmorhiza occidentalis
L. R. Heckard
1972-7-8
3038
Colusa
near summit ridge se West Peak (Lake-Colusa Co. boundary); Snow Mt.
2072
Comment
CHSC88558
Packera clevelandii
L. P. Janeway
2001-6-6
7117
Colusa
Inner North Coast Ranges. Malaney Flat, about 4.8 km (air) east of Walker Ridge Road. Large open meadow.
610
Comment
JEPS105741
Packera clevelandii
David Gowen
2004-6-24
134
Colusa
South of Stonyford. Approx. 1.8 miles along Goat Mt. Road from its junction with the paved road to Stonyford.
Comment
UC1299450
Packera clevelandii
Freed W. Hoffman
1947-6-19
1672
Colusa
Cooks Springs North Coast Ranges
Comment
UCD110420
Packera clevelandii
Daniel Slakey; CNPS volunteers
2011-6-12
6
Colusa
Walker Ridge. Wet meadow area on E side of Walker Ridge Rd. About 18 km N of Hwy.20 by road.
876
Comment
UCD134746
Packera clevelandii
A. M. Shapiro
1994-6-12
s.n.
Colusa
along Goat Mountain Road, between Sullivan Creek and Summit Lookout.
Comment
UCD64029
Packera clevelandii
Craig D. Thomsen
2000-5-11
2286
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, Colusa Co. milepost 2.63.
304
Comment
UCD163313
Packera eurycephala
Craig D. Thomsen
1997-4-13
1902
Colusa
Bear Valley. About 6 miles north of Hwy 20. Vicinity of Trout Creek, north of Deadshot Canyon.
Comment
UCD163853
Packera eurycephala
Craig D. Thomsen
2000-5-30
2274
Colusa
Bear Valley. About 7 miles north of Hwy 20.
Comment
UCD66559
Packera greenei
Craig D. Thomsen
2001-5-24
2438
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
UCD82522
Packera greenei
Craig Thomsen; G. Harrington
2009-5-12
2879
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd. East-facing hillslope above (west border) Eaton Springs meadow complex.
722
Comment
UCD89786
Panicum capillare subsp. hillmanii
Beecher Crampton
1969-6-18
8457
Colusa
1.5 miles south of Williams. Interstate Hwy. 5 northbound.
Comment
CHSC70988
Papaver rhoeas
Vernon Oswald; Lowell Ahart
1998-5-7
8990
Colusa
Sites-Lodoga Rd. just west of Grapevine Pass and County Rd. 401 to Elk Creek: Chaparral.
481
Comment
UCD36222
Parapholis incurva
Beecher Crampton
1953-4-29
1143
Colusa
Colusa County, 2 miles east of Maxwell.
Comment
CDA11257
Parnassia californica
G. F. Hrusa
1994-11-7
11992
Colusa
North Coast Biodiversity Arena; Frenzel Creek Research Natural Area, USFS. Frenzel Creek a tributary of Little Stony Creek, approx. 2 miles above Stonyford-Lodoga Rd. on Goat Mtn. Rd.
Comment
UCR115039
Parnassia californica
G. Fred Hrusa
1994-11-7
11993
Colusa
Banks of Little Stony Creek, c. 2.5 mi above Stonyford-Lodoga Rd. on Goat Mtn Road.
440
Comment
CHSC86879
Pectocarya pusilla
B. Castro
2003-4-1
1411
Colusa
Vicinity of Sites, hills N of the Sites-Lodoga Rd, and Stone Corral Creek, on low N-facing cutbank of dirt road which contours along hillside through area of cutover blue oak woodland.
280
Comment
UC1177895
Pectocarya pusilla
Peter M. Ray
1950-4-16
1738
Colusa
2 mi s Lodoga (on rd to Leesville)
381
Comment
CHSC90083
Pedicularis densiflora
Ross Rowland
2001-3-30
17
Colusa
On hillside at the junction of Walker Ridge Road and Bear Valley Road. 545090mE/4334280mN/zone 10N.
663
Comment
SEINET11263257
Pedicularis densiflora
Richard R. Halse
2014-3-25
9035
Colusa
Along the Bear Valley Road ca. 1.8 miles WNW of its junction with State Hwy 20.; 0
378
Comment
UC1051747
Pediomelum californicum
Helen K. Sharsmith
1953-6-21
4304
Colusa
ca 1 mi within boundary of Mendocino National Forest (slopes of Little Stoney Creek); Mendocino Nat For, Little Stoney Creek, Inner N Coast Ranges
670
Comment
UCD66581
Pediomelum californicum
Craig D. Thomsen
2001-5-24
2526
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
CHSC77906
Pellaea andromedifolia
Beth Hendrickson; Jean Witzman, Mary Ann Griggs
1999-3-16
Colusa
Vicinity of Grapevine Creek and Sites-Lodoga Road.
158
Comment
UC1212587
Penstemon heterophyllus
Francia Chisaki, Helen K. Sharsmith
1959-5-26
1330
Colusa
on road to Red Bridge Camp at North Fork of Stony Creek crossing; Inner North Coast Ranges, North Fork Stony Creek
Comment
RSA407923
Penstemon heterophyllus subsp. purdyi
Jens Clausen
1935-5-20
1009
Colusa
Ca 12 mi SW of Williams on Barlett Springs Road.
Comment
NY601765
Penstemon heterophyllus var. purdyi
A. A. Heller
1919-5-10
13118
Colusa
Valley west of Leesville
Comment
JEPS94162
Pentachaeta exilis
Vernon Oswald and Lowell Ahart
1998-4-21
8947
Colusa
bordering Goat Mt. Rd. 0.2 mi. s.w. of Stonyford-Lodoga Rd.
390
Comment
UC1532348
Perideridia howellii
Vernon Oswald
1986-6-30
2180
Colusa
Mill Valley Campground near the Lily Pond and Letts Lake.
1188
Comment
JEPS75733
Perideridia kelloggii
L. R. Heckard
1974-9-9
3875
Colusa
Just northeasts of rocky promontory southeast of Foutch Camp; Snow Mts.
Comment
UCR281727
Perideridia kelloggii
David Isle, Frank Pendell
2014-6-16
2135
Colusa
North Coast Range, c. 2 miles west of Stonyford on the Pendell Ranch, southeast of the home of Frank and Sheri Pendell c. 0.25 mile and northwest of the Stonyford Cemetary, c. 200 yards
384
Comment
CHSC112625
Persicaria lapathifolia
Lowell Ahart
2013-10-1
19090
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
RSA0118884
Persicaria lapathifolia
Lowell Ahart
2013-10-1
19090
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
UCD72534
Petrorhagia dubia
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3825
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. West side of Bear Creek, ca. 0.5 mile downstream of bridge.
246
Comment
JEPS2272
Phacelia ciliata var. ciliata
Ruth Johnson
1915-4-6
Colusa
College City
Comment
UC73691
Phacelia ciliata var. ciliata
Miss M. Alice King
1905-1
Colusa
near College City; Sacramento Valley
Comment
CDA16099
Phacelia corymbosa
G. F. Hrusa
1999-5-16
15044
Colusa
North Coast Ranges; above Fouts Springs.
594
Comment
JEPS73516
Phacelia corymbosa
L. R. Heckard
1972-7-10
3134
Colusa
w Trout Creek; Snow Mt.
1828
Comment
JEPS95504
Phacelia distans
Vernon H. Oswald and L. Ahart
1994-3-23
6021
Colusa
T16N R7W NE1/4 NW1/4 Sec. 1, 1660 ft, Chaparral. Goat Mtn. Rd. just W of the bridge over Sullivan Creek, S of Stonyford
505
Comment
UCD64438
Phacelia divaricata
Craig D. Thomsen
2000-4-4
2071
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
CHSC12748
Phacelia egena
L. V. Ritter
1969-4-30
227
Colusa
Ca 10 mi. sw of Williams, s side of Highway 20.
Comment
SD58509
Phacelia egena
L. R. Heckard, C. R. Bell
1951-6-14
176
Colusa
West facing serpentine slope near Stonyford.
Comment
UC1609379
Phacelia imbricata
Vernon H. Oswald and Lowell Ahart
1993-5-27
5430
Colusa
Sites-Lodoga Rd ca 0.4 mi w Grapevine Pass (4.6 road mi e of Lodoga)
481
Comment
UCD66688
Phacelia imbricata
Craig D. Thomsen
2000-5-11
2317
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
UCD66695
Phacelia imbricata
Craig D. Thomsen
2000-6-23
2381
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, about 0.5 mile west of Hwy 20/16 instersection, between Colusa Co. milepost 2.63 and 2.17.
325
Comment
CHSC60747
Phacelia imbricata subsp. imbricata
Vernon H. Oswald; Lowell Ahart
1993-5-27
5430
Colusa
Sites-Lodoga Rd. ca. 0.4 mi W of Grapevine Pass (4.6 road mi E of Lodoga).
481
Comment
CHSC79517
Phacelia imbricata subsp. imbricata
B. Castro; L. P. Janeway
2000-5-2
1109
Colusa
Vicinity of Sites, Sites-Lodoga Rd, and Grapevine Creek.
234
Comment
JEPS2143
Phacelia imbricata subsp. imbricata
W. L. Jepson
1932-5-8
16296
Colusa
n Stonyford (w Colusa Co.)
365
Comment
JEPS81284
Phacelia imbricata subsp. imbricata
L. R. Heckard and J. C. Hickman
1982-7-5
5895
Colusa
slope below (s) Summit Springs (s side of mt.); Snow Mt.
1500
Comment
HSC69910
Phacelia tanacetifolia
Thomas W. Nelson, Jane P. Nelson
1978-4-2
3876
Colusa
Along Bear Valley Rd., 2 mi. N of Jct. with Hwy. 20
Comment
JEPS1305
Phacelia tanacetifolia
R. F. Hoover
1938-4-24
3230
Colusa
below Sites; Stone Corral Canyon
Comment
UCD164156
Phacelia tanacetifolia
Craig Thomsen
2008-4-7
2726
Colusa
Bear Creek Canyon, along Bear Valley Rd. about 0.75 mile north of junction with Hwy 20.
Comment
HSC45512
Phacelia tanacetifolia
M. Alcasas
1978-4-22
48
Colusa
Bear Valley Rd., 2.3 mi. from Hwy. 20
419
Comment
UCR227636
Phalaris aquatica
Craig D. Thomsen, Gordon Harrington
2008-7-6
2779
Colusa
BLM Payne Ranch, lands to the southwest of the junction of Hwys 20 and 16. Western edge of ranch on ridge above Cache Creek Canyon, along ridge trail
511
Comment
UCD88339
Phalaris brachystachys
Beecher Crampton
1961-7-20
5936
Colusa
8 miles SE of Grimes.
Comment
POM163470
Phalaris lemmonii
Roxana S. Ferris
1926-4-21
6282
Colusa
3 mi W of Colusa..
Comment
CAS-BOT-BC265956
Phalaris minor
Roxana S. Ferris
1917-4-12
508
Colusa
4 miles east of Williams
Comment
CAS-BOT-BC265957
Phalaris minor
Roxana S. Ferris
1926-4-22
6287
Colusa
3 miles west of Colusa
Comment
UCD89177
Phalaris minor
Hursh
1919-1
X 3340
Colusa
Williams.
Comment
SEINET10657421
Phalaris minor
Roxana S. Ferris
1917-4-12
Ferris 508
Colusa
4 mi. east of Williams; Alkali Plains
Comment
UCD66454
Phalaris paradoxa
Craig D. Thomsen
2000-5-12
2322
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
UCD67056
Phalaris paradoxa
Craig D. Thomsen
2008-5-23
2750
Colusa
BLM Payne Ranch. Lands to the SW of Hwy 16/20 intersection. About 1 mile south of Hwy 20 (south of Destanella Flat), 2.5 miles west of Hwy 16.
420
Comment
HSC103841
Phoradendron bolleanum
G. Fred Hrusa, K. van Katwyk
1995-4-22
12109
Colusa
North end of Walker Ridge, ~1 mi. south of intersection with Bartlett Springs Rd. Parasite on Cupressus macnabiana
1000
Comment
CAS-BOT-BC135299
Phoradendron serotinum subsp. macrophyllum
Roxana S. Ferris
1917-4-15
623
Colusa
Sycamore. Sycamore Slough
Comment
JEPS106503
Phragmites australis
L. P. Janeway, B. Castro
2001-6-3
7098
Colusa
Inner North Coast Ranges. Spring at Grapevine Flat, on top of Walker Ridge about 0.8 km east of Baldy Mountain
884
Comment
UC1124395
Phyla caespitosa
H. S. Yates
1936-8-14
6134
Colusa
3 mi S of Colusa
15
Comment
CHSC80450
Physalis lancifolia
Caroline Warren; Jenny Marr, Heidi West
1998-7-1
Colusa
Vicinity of Peterson Road and Funks Creek.
91
Comment
RSA140862
Physalis lancifolia
John H. Thomas
1960-8-30
8866
Colusa
About 5 miles northwest of College City along road to Sycamore.
Comment
SD236433
Physalis lancifolia
G. K. Helmkamp, E. A. Helmkamp
2008-10-14
14270
Colusa
Sacramento Valley: along CA-20, 2 miles west of Meridian
14
Comment
UCD80817
Pickeringia montana
Ellen Dean, G. Harrington; K. Mawdsley, C. Thomsen, G. Walden, E. McDermott
2009-3-18
5273
Colusa
BLM Bear Creek (Payne) Ranch, lands to the SW of the jct of Hwys 20 and 16. E-facing slope above Eula Canyon. Between the headwater areas of Craig and Eula Canyons.
528
Comment
CHSC68546
Pickeringia montana var. montana
Vernon Oswald; David Isle, Rhonda Isle
1997-5-3
8362
Colusa
Inner North Coast Range. Goat Mtn. Rd. on Pine Ridge, southwest of Stony ford.
807
Comment
UC1101610
Pilularia americana
G. Thomas Robbins and S. Galen Smith
1950-4-15
1905
Colusa
Bear Valley
Comment
CAS-BOT-BC72814
Pinus sabiniana
Roxana S. Ferris
1917-4-14
578
Colusa
Arbuckle-Rumsey road, 7 mi. west of Arbuckle foothills.
Comment
JEPS110173
Piptatherum miliaceum
Lowell Ahart
2006-8-9
13106
Colusa
Gravel bar on the south side of Stony Creek, at Mine Camp, about 3 1/2 miles (air) west of Stonyford
455
Comment
JEPS118697
Pisum sativum
B. Castro with T. Boullion
2011-4-20
1847
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 5 air mi NW of Maxwell, 0.8 mi southeast of Funks Reservoir and 0.3 mi east of bend in Tehama-Colusa Canal. Sites 7.5' quad.
Comment
CHSC89829
Plagiobothrys austiniae
B. Castro; S. Innecken
2001-3-20
1215
Colusa
Vicinity of Maxwell, Golden Gate in Logan Ridge, Funks Reservoir, and the Glenn-Colusa canal.
39
Comment
UCD82474
Plagiobothrys bracteatus
Craig Thomsen; G. Harrington
2009-5-12
2852
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
707
Comment
CAS-BOT-BC230037
Plagiobothrys canescens
Stephanie Castle; Plant Biology 102
2007-4-29
1
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Meadow on the west side of State Route 16, ca. 2 road miles south of intersection with State Route 20. West side of Bear Creek, north of Craig Creek
304
Comment
SFV3146
Plagiobothrys canescens
A. Ongun
1961-4-16
37
Colusa
Bear Valley, 8 miles north of State Highway 20. Just south of wooden bridge.
Comment
JEPS68046
Plagiobothrys fulvus
W. L. Jepson
1932-5-7
16258
Colusa
valley above Venado
304
Comment
CHSC89833
Plagiobothrys greenei
B. Castro; S. Innecken
2001-3-19
1214
Colusa
Vicinity of Maxwell, Golden Gate in Logan Ridge, Funks Reservoir, and the Glenn-Colusa canal.
48
Comment
JEPS116661
Plagiobothrys infectivus
B. Castro with Robin Carter, Amy Lyons
2010-5-18
1812
Colusa
Vicinity of Golden Gate in Logan Ridge, Funks Reservoir and the Tehama-Colusa canal, Eastside Road/Rd 69 extension route. Logan Ridge
121
Comment
CHSC31262
Plagiobothrys leptocladus
R. A. Schlising; K. R. Stern
1980-5-5
3584
Colusa
Southwest of Colusa at Colusa National Wildlife Refuge; south end of refuge, several miles north of Ware Road; on 'salt flats'.
Comment
CDA32833
Plagiobothrys stipitatus
P. Hiatt
1979-4-26
Colusa
North end of Bear Valley at Bartlett Springs Road.
0
Comment
HSC48203
Plagiobothrys stipitatus var. micranthus
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3953
Colusa
Along Bear Valley Rd., 2.5 mi. from junction with Hwy. 20
366
Comment
UCD58097
Plagiobothrys stipitatus var. micranthus
Ellen Dean; C. Thomsen, S. Bledsoe, G. Harrington, D. Hickson
2007-3-25
3474
Colusa
BLM Payne Ranch. Lands to the southwest of the intersection of Hwy. 16 and Hwy. 20. Destinella Flat, just E of the Lake County Border. Ca. 3.4 miles along Hwy. 20 from junction of Hwy. 20 and Hwy. 16.
560
Comment
UCR206851
Plagiobothrys stipitatus var. micranthus
George K. Helmkamp, E. A. Helmkamp
2009-3-11
14359
Colusa
Sacramento Valley, along CA-20, 1.6 miles southwest of Colusa and just north of Colusa National Wildlife Refuge
15
Comment
CDA11408
Plagiobothrys stipitatus var. stipitatus
G. F. Hrusa, K. van Katwyk
1995-4-22
12129
Colusa
Inner North Coast Ranges; along roadside in Bear Valley. 15 m. N of Hwy. 20.
Comment
UCD63009
Plagiobothrys stipitatus var. stipitatus
Ellen Dean; C. Thomsen, N. Voegtly, J. Alderson, G. Harrington
2008-3-30
4662
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Near corral on west side of Bear Creek just south of Hwy 20.
319
Comment
CHSC62922
Plagiobothrys tenellus
Vernon H. Oswald; Lowell Ahart
1994-4-6
6069
Colusa
Goat Mtn. Rd. at Sullivan Creek, 1.2 mi SW of Digger Pine Flat, S of Stonyford. On the slopes bordering Sullivan Creek.
469
Comment
JEPS90081
Plagiobothrys tenellus
Dean W. Taylor
1992-4-16
12402
Colusa
hillsides ca. 0.4 mi. due w. from spillway into Little Stony Creek (East Park Reservoir); Inner N. Coast Range, Gilmore Peak Quad.
411
Comment
UCD97126
Plagiobothrys tenellus
Ellen Dean; G. Harrington, J. Alderson
2011-4-10
6910
Colusa
Along Bear Valley Road at the Cal Fire station.
335
Comment
CAS-BOT-BC60834
Planodes virginica
Doris K. Kildale
1928-5-8
5017
Colusa
3 miles south of Arbuckle.
Comment
CHSC86843
Plantago coronopus
Jenny Marr; Heidi West, Caroline Warren, Natalie Wight
1998-6-11
Colusa
Vicinity of Funks Creek, Logan Ridge, Golden Gate, and Antelope Valley.
121
Comment
CHSC94420
Plantago coronopus
Lowell Ahart
2006-8-9
13154
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
CHSC107956
Plantago elongata
B. Castro; T. Boullion
2011-4-20
1839
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 5 air mi NW of Maxwell, 0.8 mi southeast of Funks Reservoir and 650 ft northeast of Tehama-Colusa Canal. Off northwest corner of large +- saline/alkaline wetland/marsh, scattered in marsh edges, vernally moist flats, vernal pools and edge of large bald patch of bare whitish soil.
49
Comment
CHSC59997
Plantago erecta
Linda A. Bell
1975-4-19
44
Colusa
Bear Valley Road, 1 mile north of State Highway 20.
Comment
HSC72167
Plantago erecta
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9542
Colusa
Bear Valley Rd., 1.3 mi. from its junction with Hwy. 20
366
Comment
POM61338
Plantago erecta
Roxana S. Ferris
1917-4-12
496
Colusa
4 miles east of Williams.
Comment
UCD82465
Plantago erecta
Craig Thomsen; G. Harrington
2009-5-12
2842
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
707
Comment
HSC16823
Plantago erecta
M. Dole
1963-4-15
71
Colusa
1 mi. S of the junction of Hwys. 16 and 20, on Hwy. 16
Comment
UCD124495
Plantago erecta
J. M. Tucker
1960-4-3
3583
Colusa
1/4 mile west of road, 7.5 miles above State Highway 20, Bear Valley (Wilbur Springs) Road.
Comment
UCD82366
Plantago erecta
Robin McMaster
1973-4-15
336
Colusa
Bear Valley.
Comment
JEPS110098
Plantago lanceolata
Lowell Ahart
2006-8-9
13153
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
CHSC23473
Platystemon californicus
S. R. Poe
1974-3-30
29
Colusa
In fields adjacent to highway 20, 22.5 mi. w of williams.
Comment
UC118440
Platystemon californicus
T. S. Brandegee
April 1889
Colusa
Stites
Comment
UCD164029
Platystemon californicus
Indya Messier
2016-4-9
3
Colusa
BLM Bear Creek Ranch (previously Payne Ranch). Lands to the SW of jct of Hwys 16 and 20. Just southwest of corral at junction of 16 and 20.
324
Comment
CDA34082
Platystemon californicus
P. Hiatt
1979-4-26
Colusa
North end of Bear Valley at Bartlett Springs Road.
0
Comment
CHSC112021
Platystemon californicus
David Isle
1977-4-5
2068
Colusa
Mendocino National Forest. About 1.3 mile NE of Fouts Springon Upper Davis Flat.
493
Comment
HSC86821
Platystemon californicus
Dana J. Lenarz
1982-3-27
3
Colusa
.5 km W of junction of Hwy. 20 and Hwy. 16, S side of Bear Creek, 29 km SW of Williams
322
Comment
UCD13217
Platystemon californicus
Steve Daniel
1986-4-13
10
Colusa
California. Colusa Co. Bear Valley, 7.6 mi No of jct of Bear Valley Rd. and hwy 20. Elev. ca. 1300 ft.
396
Comment
RSA590191
Platystemon californicus var. californicus
Michael A. Vincent, Robert Rhode
1996-3-30
7293
Colusa
Along Bear Valley Road, 4.6 miles N of junction Wilbur Springs Road
Comment
UCD82392
Plectritis ciliosa
Craig Thomsen; G. Harrington
2009-5-12
2835
Colusa
Colusa County. Walker Ridge. South of spur road en route to Eaton Springs, about 1/2 mile east of Walker Ridge Rd. About 200 yds south of road (ravine with spring below).
822
Comment
UCD137585
Plectritis ciliosa
Gene R. Williams
1961-3-25
27
Colusa
In Bear Valley, 8.4 miles north of turnoff from State Highway 20.
Comment
CHSC62948
Plectritis ciliosa subsp. ciliosa
Vernon H. Oswald; Lowell Ahart
1994-4-6
6066
Colusa
Goat Mtn. Rd. at Sullivan Creek, 1.2 mi SW of Digger Pine Flat, S of Stonyford.
469
Comment
UC1613289
Plectritis ciliosa subsp. ciliosa
Charles M. Belshaw
1937-4-25
2848
Colusa
vicinity of Cook's Spring, Devil's Ridge; Inner N. Coast Range
Comment
UC1018914
Plectritis ciliosa subsp. ciliosa
S. C. Dyal, A. Carter, E. Crum
1938-5-7
712
Colusa
Colusa County
Comment
UCD81235
Plectritis congesta subsp. brachystemon
Barry Rice; E. Dean, G. Harrington, J. Alderson, M. Bibbo
2009-3-25
s.n.
Colusa
Bear Creek (formally Payne) Ranch. Lands to the SW of the jct of Hwys 20 and 16. Southern part of the ranch on the south side of a canyon that is immediately north of Brophy Canyon.
274
Comment
JEPS16087
Plectritis macrocera
Rimo Bacigalupi, Arthur Holmgren
1950-4-26
3171
Colusa
7.7 mi w of Sites (Grapevine Grade to Lodoga)
Comment
JEPS95488
Plectritis macrocera
Vernon H. Oswald and L. Ahart
1994-4-6
6067 A
Colusa
T17N R7W SE1/4 SW1/4 Sec. 36, 1540 ft, Chaparral. Goat Mtn. Rd. at Sullivan Creek, 1.2 mi SW of Digger Pine Flat, S of Stonyford
469
Comment
UC999820
Plectritis macrocera
S. C. Dyal, A. Carter, E. Crum
1938-5-7
698
Colusa
near Williams
Comment
UCD162996
Plectritis macrocera
Craig D. Thomsen
2000-3-31
2085
Colusa
Bear Creek Botanical Management Area. Roadside shoulder of Hwy 20 (south side), about 0.75 mile west of Hwy 20/16 intersection.
345
Comment
UCD57103
Plectritis macrocera
Gordon Harrington; Diana Hickson
2007-4-7
0016
Colusa
BLM Payne Ranch, SW of intersection of Hwy 16 and Hwy 20, 3/4 mile WNW of Roadkill Cafe.
470
Comment
UC999822
Plectritis macrocera
S. C. Dyal, A. Carter, E. Crum
1938-5-7
696
Colusa
south central Colusa County
Comment
POM204747
Poa annua
A. A. Heller, H. E. Brown
1902-5-2
7449
Colusa
Princeton.
Comment
RSA31153
Poa annua
A. A. Heller, H. E. Brown
1902-5-2
5439
Colusa
Princeton.
Comment
RSA756857
Poa annua
George K. Helmkamp, E. A. Helmkamp
2009-3-11
14360
Colusa
along CA-20, 1.6 miles southwest of Colusa and just north of Colusa National Wildlife Refuge
15
Comment
UCD163710
Poa annua
Craig Thomsen
1999-5-10
2022
Colusa
Colusa County. At confluence of Sulphur Creek and Bear Creek. About 3 miles north of Hwy 20.
Comment
CDA2384
Poa bulbosa
M. H. Handley
1963-5-1
Colusa
Sites.
0
Comment
SEINET10822495
Poa bulbosa
K. E. Warwick
1978-4-8
Warwick 21
Colusa
Salt Creek Canyon, n side of Salt Creek, Hwy 20, 11 mi WSW of Williams. Ca. 100 ft. S of Hwy 20, in open area. Wilbur Springs Quadrangle, 15'. E central border of Sect. 32. T15N, R4W.
Comment
SEINET11686444
Poa bulbosa var. vivipara
S. M. Leary
1978-1
3
Colusa
N side of Salt Creek, S side of Hwy 20, 11 mi WSW of Williams
143
Comment
CAS-BOT-BC236332
Poa secunda subsp. secunda
Roxana S. Ferris
1926-4-23
6583
Colusa
Field 2 miles from Stonyford
Comment
CAS-BOT-BC236333
Poa secunda subsp. secunda
Roxana S. Ferris
1917-4-14
575
Colusa
Arbuckle - Rumsey Road. Foothills W of Arbuckle
Comment
CHSC112213
Poa secunda subsp. secunda
Lowell Ahart; John Dittes, Josephine Guardino
2013-4-26
18643
Colusa
Inner North Coast Range. On the north side of State Highway 20, just east of Lake County Line, 12.2 mile (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
566
Comment
CHSC33326
Poa secunda subsp. secunda
P. Reynolds
1980-4-12
15
Colusa
Ca. 0.3 mi. w of jct of Hwys. 20 and 16, s side of Bear Creek, ca. 18 mi. sw of Williams.
321
Comment
UCD81247
Poa secunda subsp. secunda
Ellen Dean; G. Harrington, R. Willmarth, B. Rice, and C. Thomson
2009-4-8
5411
Colusa
BLM Bear Creek (Payne) Ranch. Lands to the SW of the intersection of Hwys. 16 and 20. Inside canyon that is located to the south of Brophy Canyon.
340
Comment
UCD90886
Poa secunda subsp. secunda
John R. Davey
1967-12-2
90
Colusa
Border, ca. 5-6 miles WSW of Leesville, Bartlett Springs Road N of Baldy Mountain.
609
Comment
JEPS62433
Pogogyne douglasii
W. L. Jepson
1920-5-23
8966
Colusa
near Leesville, foot of Bartlett grade, west side of Bear Valley, w Colusa Co.
Comment
CHSC107975
Pogogyne zizyphoroides
B. Castro; Robin Carter, Jessica Boyt
2011-4-25
1858
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; ca I mi southeast of Funks Reservoir and 0.2 mi northeast of Tehama-Colusa Canal. Large +- alkaline vernal pool/marsh. In vernal pool in compacted E-W road track that goes through marsh.
49
Comment
CHSC115624
Polanisia dodecandra subsp. trachysperma
David Isle
2014-7-27
2137
Colusa
Northern Sacramento Valley Foothills: North side of Maxwelll Road, about 2 miles W of Sites and 5.8 miles E of summit ofMaxwell Grade.
Comment
JEPS104398
Polygonum amphibium var. emersum
Lowell Ahart
2003-10-23
10656
Colusa
In East Park Reservoir, ca 1/8 mi nw of Sites Lodoga Rd, ca 1 mi n of Lodoga, ca 21 mi w of Maxwell.
368
Comment
UC1192334
Polygonum amphibium var. emersum
Herbert L. Mason and Verne Grant
1946-8-6
12970
Colusa
pond 2.7 mi n Colusa (between Sacramento River and Butte Creek); Butte Sink
Comment
CHSC85960
Polygonum aviculare
Jenny Marr; Caroline Warren
1998-5-4
Colusa
Vicinity of Sites, Stone Corral Creek, and Antelope Valley.
106
Comment
CHSC86836
Polygonum aviculare
Jenny Marr; Heidi West, Caroline Warren, Natalie Wight
1998-6-11
Colusa
Vicinity of Funks Creek, Logan Ridge, Golden Gate, and Antelope Valley.
121
Comment
JEPS81372
Polygonum davisiae
L. R. Heckard and J. C. Hickman
1982-7-8
5983
Colusa
just n summit marker (West Peak and Cirque from West Peak); Snow Mt.
Comment
JEPS80203
Polygonum douglasii subsp. douglasii
L. R. Heckard and J. Hickman
1980-7-3
5358
Colusa
just w Summit Springs (ca 10 mi w of Stonyford, Colusa-Lake Co. boundary); Snow Mt.
1548
Comment
RSA724951
Polypogon interruptus
L. Ahart
2006-8-9
13159
Colusa
between the southwest 1/4 and southeast 1/4; under the bridge across Stony Creek, just north of Stonyford.
348
Comment
CAS-BOT-BC232540
Polypogon monspeliensis
Roxana Stinchfield
1916-6-17
287
Colusa
At levee, Tule near College City
Comment
CHSC77410
Polypogon monspeliensis
Heidi West; Joyce Lacey-Rickert
1998-10-29
Colusa
Vicinity of Antelope Valley and Sites.
109
Comment
CHSC94414
Polypogon monspeliensis
Lowell Ahart
2006-8-9
13122
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
JEPS75436
Polypogon monspeliensis
W. L. Jepson
1934-5-3
16602
Colusa
n Colusa (Stegeman Sta.)
Comment
JEPS75438
Polypogon monspeliensis
W. L. Jepson
1934-5-4
16604
Colusa
Princeton
Comment
POM206735
Polypogon monspeliensis
A. A. Heller
1902-5-19
5570
Colusa
Near Colusa.
Comment
UCD18842
Polypogon monspeliensis
Vernal Pool Team 2001; Carol Witham and Jennifer Buck
2001-4-30
149
Colusa
2 mi. south of the town of Colusa along Hwy 20, east of Hwy 20 and the Colusa Airport, Dolan Ranch site, pool # DOL001, UTMs: 10S0587786; 4336302.
Comment
JEPS80814
Polystichum imbricans subsp. imbricans
L. R. Heckard and J. C. Hickman
1981-7-31
5787
Colusa
e side Snow Mt. (Fouts Springs Overlook)
1783
Comment
CHSC116671
Polystichum munitum
Lowell Ahart; John Dittes, Joseephine Guardino
2016-2-14
20720
Colusa
On the east side of the gravel road, about 1/2 mile north of Letts Lake, about 1/2 mile south of the large campground, about 13 miles (air) southwest of Stonyford.
966
Comment
CAS-BOT-BC102381
Populus fremontii
Roxana S. Ferris
1917-4-17
624
Colusa
Sycamore, Sycamore Slough
Comment
HSC86897
Populus fremontii subsp. fremontii
Anthony J. Desch, Bryon Cariss
1988-4-17
36
Colusa
Goat Mountain Rd. 7 mi. W from its junction with Stonyford Rd.
Comment
CHSC96689
Portulaca oleracea
Lowell Ahart
2006-8-22
13232
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
CHSC46886
Potamogeton pusillus var. tenuissimus
Vernon Oswald
1989-9-12
4006
Colusa
Letts Lake in the Mendocino National Forest, ca. 10 mi (air) sw of Stonyford. On the edge of the lake.
1365
Comment
RSA0013900
Proboscidea louisianica
J. C. Roos
1948-9-2
4024
Colusa
West of Williams.
Comment
JEPS27878
Proboscidea louisianica subsp. louisianica
Richard Snow
1958-8-3
672
Colusa
on road to Leesville near Hwy 20
Comment
JEPS8022
Proboscidea louisianica subsp. louisianica
Rimo Bacigalupi with L. R. Heckard
1951-8-6
3471
Colusa
4.6 mi nw Sites (along road between Sites and Lodoga)
Comment
UC914241
Proboscidea louisianica subsp. louisianica
Verne Grant and Alva Grant
1946-8-6
7842
Colusa
4 mi nw Colusa (e Colusa Co.); West Butte Ranch
Comment
CHSC1582
Prunus emarginata
F. Wigmore
1931-5-1
Colusa
Stony Creek gorge.
Comment
UCD141584
Prunus subcordata
Ellen Dean
2013-4-3
7596
Colusa
BLM Bear Creek Ranch (previously Payne Ranch), at intersection of HWY 16 and HWY 20. Main part of ranch near Roadkill Cafe, along South side of Thompson Creek, Southeast of Roadkill Cafe.
384
Comment
UCD67072
Pseudognaphalium californicum
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5099
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western part of ranch along ridge trail at Cache Creek Canyon. Just south of junction with trail that leads east to Brophy Canyon and Thompson Creek.
494
Comment
JEPS120792
Pseudognaphalium luteoalbum
Lowell Ahart
2013-10-1
19097
Colusa
Strand of East Park Reservoir, about 2.5 air miles SE of Stonyford, about 2.5 miles NW of Lodoga, about 10 air miles NW of Sites.
Comment
UCR119099
Psilocarphus brevissimus
Beecher Crampton
1953-4-29
1146
Colusa
Sacramento Valley, 3 miles east of Maxwell
91
Comment
UCD133714
Psilocarphus brevissimus
Beecher Crampton
1953-4-29
1146
Colusa
3 miles east of Maxwell.
Comment
CHSC101626
Psilocarphus brevissimus var. brevissimus
David W. Isle
2002-4-18
1657
Colusa
Mendocino National Forest; N of Fouts Springs, N of Chlorinator Building on road to Bathhouse Trail (Snow Mtn.) Edge of E-flowing ephemeral drainage in chamise site burned during 8/8/01 Trough Fire and part of Helicopter Hydromulch Study Plot.
524
Comment
CHSC107119
Psilocarphus brevissimus var. brevissimus
L. P. Janeway; B. Castro
2011-4-27
10241
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 1.8 km southeast of Funks Reservoir and 0.3 km northeast of Tehama-Colusa Canal. On bare ground in re-vegetating old vehicle tracks through north edge of the marsh.
49
Comment
JEPS40460
Psilocarphus brevissimus var. brevissimus
W. L. Jepson
1934-5-3
16598
Colusa
College City
Comment
CHSC115394
Psilocarphus tenellus
Lowell Ahart
2015-4-10
20007
Colusa
Along the south edge of Leesville Road, about 1/2 mile east of Leesville, about 12 miles (air) northwest of Williams.
445
Comment
JEPS124212
Psilocarphus tenellus
Lowell Ahart
2015-4-10
20007
Colusa
About 1/2 mile east of Leesville, about 12 miles (air) northwest of Williams.
Comment
UC638695
Psilocarphus tenellus
Ethel Crum
1938-5-7
2010
Colusa
4.2 mi n Rumsey; Inner North Coast Range, Comanche Hills
254
Comment
UCD58125
Psilocarphus tenellus
Ellen Dean; PLB 102 Class
2007-4-29
3721
Colusa
Payne Ranch. West of Hwy. 16. Ca. 2 road miles S of junction of Hwy. 20 and Hwy. 16. Through Craig Canyon. Near 'Roadkill Cafe.
414
Comment
CHSC79691
Psilocarphus tenellus var. tenellus
L. P. Janeway; B. Castro
2000-5-1
6687
Colusa
Vicinity of Grapevine Creek and Sites-Lodoga Road.
201
Comment
CHSC112221
Pterostegia drymarioides
Lowell Ahart
2013-5-1
18669
Colusa
On the east side of Bear Valley Road, about 2 1/2 miles (by road) northwest of the intersection of State Highway 20 and Bear Valley Road.
533
Comment
CHSC62847
Pterostegia drymarioides
Vernon H. Oswald; Lowell Ahart
1994-3-23
6018
Colusa
Goat Mtn. Rd. just W of the bridge over Sullivan Creek, S of Stonyford. Growing at the base of an outcropping of serpentine.
505
Comment
CHSC79346
Pterostegia drymarioides
B. Castro; L. P. Janeway
2000-4-10
1064
Colusa
Vicinity of Sites in rolling hills near Sulphur Gap, among un-named tributaries to Lurline Creek.
121
Comment
UC1738833
Puccinellia simplex
Dean W. Taylor
1988-3-24
9462
Colusa
Colusa National Wildlife Refuge, on Ohm Road ca. 0.5 miles North of Ware Road
24
Comment
UCD163707
Puccinellia simplex
Craig Thomsen
1999-5-10
2019
Colusa
Colusa County. At confluence of Sulphur Creek and Bear Creek. About 3 miles north of Hwy 20.
Comment
JEPS15216
Purshia tridentata var. tridentata
Rimo Bacigalupi with L. T. Dempster, Mrs. P. A. Munz and G. T. Robbins
1956-7-25
5747
Colusa
about 0.75 mi w Fouts Camp (s shoulder of Snow Mountains, Colusa-Lake County boundary); Snow Mountains
1905
Comment
UCD84509
Quercus X morehus
Ellen Dean; C. Thomsen, G. Harrington, R. Wilmarth, R. Wenk
2010-6-2
6060
Colusa
Colusa County. On Lake County border. Walker Ridge. Along Walker Ridge Road, between Cold Spring and Buck Flat.
971
Comment
UCD45291
Quercus berberidifolia
D. Sanchez-Mata
1998-7-10
s.n.
Colusa
Stonyford. Fouts Spring Road. Open interior live oak scrub chaparral (Quercus wislizenii var. frutescens) in deforested slopes.
Comment
UCD83633
Quercus berberidifolia
Fanny Ye; with PLB 102 class
2010-5-2
4
Colusa
East slope of Walker Ridge. Along Brim Road, between Bear Valley and Walker Ridge.
493
Comment
UCD81241
Quercus chrysolepis
Ellen Dean; G. Harrington, R. Willmarth, B. Rice, and C. Thomson
2009-4-8
5405
Colusa
BLM Bear Creek (Payne) Ranch. Lands to the SW of the intersection of Hwys. 16 and 20. Inside canyon that is located to the south of Brophy Canyon.
292
Comment
UCR225266
Quercus chrysolepis
Ellen Dean, Davis Botanical Society
2008-5-31
5032
Colusa
west of Hwy I-5 at Maxwell, near summit lookout of Goat Mountain, at end of Goat Mountain Road, western part of ridges below lookout just off the road
1725
Comment
CAS-BOT-BC86603
Quercus douglasii
Roxana S. Ferris
1917-4-14
580
Colusa
7 mi W of Arbuckle - Rumsey Road
Comment
UC993117
Quercus douglasii
J. M. Tucker
1948-9-22
1869
Colusa
11.3 mi w Williams (beside road to Venado)
Comment
UCD57708
Quercus douglasii
Daniel Chau; with Plant Biology 102
2007-4-29
3
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Eastern part of ranch, ca. 2 road miles south of intersection of State Routes 20 and 16. Along unimproved road in the mouth of Craig Canyon.
313
Comment
UCD13383
Quercus durata
Charles Martin
1986-5-17
31
Colusa
5.7 miles west of Stonyford, along Foot Springs Rd.
Comment
UCD45981
Quercus durata
D. Sanchez-Mata
1996-7-3
s.n.
Colusa
Williams. Walker Ridge. Wilburg Springs-Wintun Camp. Serpentine chaparral.
850
Comment
UCD55461
Quercus durata
Ellen Dean; Gordon Harrington
2006-10-6
3285
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Ranch can be accessed via north gate which is located on a road on the S side of State Route 20, 2.3 road miles W of jct of State Routes 16 and 20. In Thompson Canyon, along dirt road that parallels ephemeral drainage.
381
Comment
SEINET13953266
Quercus durata
Steven Lagos
1974-1
51
Colusa
Wilbur Springs Quad., 3000 ft.
914
Comment
CHSC79514
Quercus durata var. durata
L. P. Janeway
2000-5-31
6774
Colusa
Inner North Coast Ranges. On top of Hornet Nest Ridge, between Hornet Nest Spring and Hornet Nest Hill; about 6.4 km southwest of Stonyford.
884
Comment
HSC31697
Quercus durata var. durata
Thomas E. Higley
1974-5-4
64
Colusa
3/4 mi. N of T junction of Indian Valley.
854
Comment
JEPS82547
Quercus garryana var. breweri
L. R. Heckard
1983-7-27
6112
Colusa
s flank Snow Mt. (slopes around Summit Springs)
Comment
CDA16104
Quercus garryana var. garryana
G. F. Hrusa, Dmitri Geltman (LE)
1999-8-18
15249
Colusa
North Coast Ranges; Goat Mtn.
1706
Comment
UC1051744
Quercus kelloggii
Helen K. Sharsmith
1953-6-20
4300
Colusa
n slope Goat Mountain; Inner North Coast Ranges, Mendocino National Forest
1828
Comment
SEINET13953521
Quercus lobata
L. Blackford, S. Branch, D. Malm
1988-1
79
Colusa
4 mi W on Goat Mt. Road off Lodoga-Stonyford Road in meadow
457
Comment
RSA623529
Quercus palmeri
Roger Raiche
1990-12-2
s.n.
Colusa
Across Sulphur Creek from Wilbur Springs
Comment
UCD14526
Quercus palmeri
Roger Raiche
1990-12-2
C
Colusa
California, Colusa Co.; across Sulphur Creek from Wilbur Springs;
Comment
UCD14529
Quercus palmeri
John M. Tucker
1991-8-19
4496 -A
Colusa
California, Colusa Co.; across Sulphur Creek from, and southeast of, the hotel at Wilbur Springs;
Comment
UCD47645
Quercus wislizeni
Jean Addicott
1963-5-12
44
Colusa
On road to Leesville, 16 miles north of junction of State Highways 16 and 20.
Comment
UCD84513
Quercus wislizeni var. frutescens
Ellen Dean; C. Thomsen, G. Harrington, R. Wilmarth, R. Wenk
2010-6-2
6064
Colusa
Colusa County. On Lake County border. Walker Ridge. Along Walker Ridge Road, between Cold Spring and Buck Flat.
971
Comment
UCR225462
Quercus wislizeni var. frutescens
Ellen Dean, Gordon Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5116
Colusa
BLM Payne Ranch, lands to the southwest of the junction of Hwys 16 and 20. Southwestern edge of ranch above Cache Creek Canyon along ridge trail
548
Comment
CHSC33068
Rafinesquia californica
Thomas Nelson; Jane Nelson
1978-4-29
3926
Colusa
Along Bear Valley Rd. ca. 2 miles from junction with State Route 20.
365
Comment
HSC48162
Rafinesquia californica
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3926
Colusa
Along Bear Valley Rd. ca. 2 mi. from its junction with S.R. 20
366
Comment
UCD159337
Rafinesquia californica
D. S. Park; E. Dean
2010-6-5
121
Colusa
Walker ridge, Cold Spring Mt. roadside on exposed slope.
935
Comment
JEPS80085
Ranunculus alismifolius
L. R. Heckard with J. Hickman
1979-6-16
5092
Colusa
about 1/2 mi s Milk Ranch (nw of West Peak, Snow Mt.)
2011
Comment
UCR212367
Ranunculus arvensis
Craig D. Thomsen
2000-5-12
2324
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mi west of Hwy 20/16 intersection, milepost 3.00
310
Comment
CAS-BOT-BC378936
Ranunculus californicus var. californicus
Roxana Ferris
1917-4-15
612
Colusa
Sycamore Slough
Comment
CAS-BOT-BC378937
Ranunculus californicus var. californicus
Roxana Ferris
1926-4-21
6296
Colusa
abandoned rice field 2 mi west of Colusa
Comment
SEINET11587858
Ranunculus canus
Unknown
2009-3-11
14373
Colusa
Williams
Comment
JEPS87656
Ranunculus hebecarpus
Vernon H. Oswald and Lowell Ahart
1994-4-6
6057
Colusa
Goat Mtn. Rd. 0.1 mi ne Digger Pine Flat (s of Stonyford)
463
Comment
SEINET8699529
Ranunculus hebecarpus
R. R. Halse
2013-3-26
8739
Colusa
Along the Leesville Road ca 5.6 miles NW of its junction with CA Hwy 20, W of Williams.
157
Comment
UCD169733
Ranunculus hebecarpus
Richard R. Halse
2013-3-26
8739
Colusa
Along the Leesville Road ca. 5.6 miles northwest of its junction with State Hwy. 20, west of Williams.
157
Comment
UCD56912
Ranunculus occidentalis
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3515
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. In Craig Canyon.
318
Comment
UCD65635
Ranunculus occidentalis
Craig D. Thomsen
2000-4-12
2141
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
UCD97058
Ranunculus orthorhynchus var. bloomeri
G. Thomas Robbins; S. Galen Smith
1950-4-15
1907
Colusa
Bear Valley.
Comment
CHSC99463
Raphanus raphanistrum
Richard R. Halse
2007-3-22
7104
Colusa
Williams; by the junction of 5th Street and B Street,
25
Comment
UCR257577
Raphanus sativus
George K. Helmkamp, Elizabeth Helmkamp
2014-1-4
22509
Colusa
Sacramento Valley, along CA-20 at Sycamore Cutoff, 1.3 miles west of the Sacramento River crossing
20
Comment
JEPS75868
Rhamnus californica
L. R. Heckard
1974-9-10
3880
Colusa
East Circle Trail, along spur running se from the w peak, Snow Mt. Snow Mt.
2011
Comment
CDA15463
Rhamnus tomentella subsp. crassifolia
G. F. Hrusa, WTD
1998-6-19
14599
Colusa
North Coast Ranges; Little Stony Creek. Goat Mtn. Rd. ~ 1 km. W of intersection with Lodoga-Stonyford Rd.
Comment
CDA16114
Rhamnus tomentella subsp. crassifolia
G. F. Hrusa, Dmitri Geltman (LE)
1999-8-18
15239
Colusa
North Coast Ranges; Along Little Stony Creek.
0
Comment
CHSC105169
Rhamnus tomentella subsp. crassifolia
B. Castro; L. P. Janeway
1999-7-5
1014
Colusa
Ca 11 air mi SSW of Stonyford, 5 mi NW of Indian Valley Reservoir, just N of Colusa/Lake Co line, at Bear Wallow Spring. In serpentine substrate on NNW-facing slope W of Lovelady Ridge rd ca 0.5 mi N of its jcn with USFS Rd 16N06, 0.5 mi NE of Pacific Point.
1045
Comment
JEPS41964
Rhamnus tomentella subsp. crassifolia
W. L. Jepson
1920-5-23
8975
Colusa
hills w of Bear Valley (on grade over ridge to Indian Valley)
Comment
UCR228656
Rhamnus tomentella subsp. crassifolia
Ellen Dean, Davis Botanical Society
2008-5-31
4996
Colusa
West of Hwy I-5 at Maxwell, along Goat Mountain Road,following Little Stoney Creek, Little Stoney Creek Canyon
414
Comment
RSA275357
Rhamnus tomentella subsp. tomentella
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3936
Colusa
Along Bear Valley road , 2.5 miles from jct with State Route 20, Oak Woodland
366
Comment
UC1618009
Rhamnus tomentella subsp. tomentella
Donald G. Nelson
1940-6-9
693
Colusa
e. slopes Snow Mt. (at Happy Camp a private summer camp on Paradise Creek which empties below into the Middle Fork of Stony Creek, n.w. boundary of county); , Happy Camp
731
Comment
UCD111678
Rhododendron occidentale
Christopher Mallek
2008-1
s.n.
Colusa
Frenzel Creek.
654
Comment
UCD117941
Rhododendron occidentale
George F. Hrusa
1989-5-5
6066
Colusa
Open margin of Little Stony Creek, along Rd. to Cedar Camp. 1.5 m. SW of intersection of Stonyford-Lodoga Rd.
470
Comment
UCD117976
Rhododendron occidentale
A. T. Leiser
1985-5-19
LO
Colusa
Between 3-4 miles along Frenzel Creek as it parallels the road M5 from Lodoga to Goat Mtn. Frenzel Creek is on S. side of road and down 30-40 ft. Populations are scattered in full sun on both sides of the creek.
Comment
CDA38890
Rhododendron occidentale var. californicum
A. T. Leiser
1985-5-19
s.n.
Colusa
Between 3-4 miles along Frenzel Creek as it parallels the road M5 from Lodoga to Goat Mtn. Frenzel Creek is on south side of road and down 30-40 ft.
0
Comment
CAS-BOT-BC108891
Ribes divaricatum var. pubiflorum
F. G. Renner
1924-6-25
653
Colusa
Upper Letts Valley.
1371
Comment
JEPS15562
Ribes lobbii
G. Thomas Robbins with L. R. Heckard
1956-7-25
3718
Colusa
about 50 yards below summit Snow Mt. West (ridge between east and west peaks of Snow Mt.); Snow Mt.
2133
Comment
JEPS75853
Ribes lobbii
L. R. Heckard
1974-9-10
3901
Colusa
ne slope West Peak; Snow Mt.
2103
Comment
CAS-BOT-BC168901
Ribes malvaceum
Eric Peterson; Matt Foruria; Tom Ward
1995-4-2
59
Colusa
4.3 north on Walker Ridge Road from jct with Hwy 20
822
Comment
UCD80841
Ribes malvaceum
Jack Alderson
2009-2-21
22
Colusa
BLM Payne Ranch (Bear Creek Ranch), lands to the SW of intersection of Hwys 16 and 20. South side of Brophy Canyon.
426
Comment
UCR281724
Ribes malvaceum
David Isle
2015-6-20
2156
Colusa
North Coast Range, c. 4 miles west of Stonyford, southeast of curve at culvert crossing just east of old dumpsite road junciton, uphill c. 200 ft south of 18N01
439
Comment
CHSC115751
Ribes malvaceum
David Isle
2015-6-20
2156
Colusa
North Coast Ranges: 4 mi W of Stonyford; SE of curve at culvert crossing just E of old dumpsite rd jct; uphill, 100-200' S of 18N01 in 2012 Mill Fire area chaparral. 10S -0533568E, 4357508N.
439
Comment
UCD97117
Ribes quercetorum
Ellen Dean; G. Harrington, J. Alderson
2011-4-10
6900
Colusa
Along Bear Valley Rd on west and east sides of road.
355
Comment
CHSC90878
Ribes roezlii
D. Isle
2003-6-24
214
Colusa
Mendocino National Forest--North Coast Ranges. Little Stony Creek Watershed. UTM's: 10S 0523825E 4346753N.
1767
Comment
LA97624
Ribes roezlii
J. M. Tucker;
1959-5-30
3524
Colusa
Goat Mountain, ca. 1.25 mi. NW of Goat Mountain Lookout
1767
Comment
SFV14515
Ribes roezlii
M. L. Vincent
1968-6-6
786
Colusa
Goat Mountain Road, 1 mile from Stony Ford turnoff.
1825
Comment
UC1543162
Rigiopappus leptocladus
Charlotte G. Nast
1936-4-17
148
Colusa
Williams to Lake Co. Road
Comment
UCD66448
Rigiopappus leptocladus
Craig D. Thomsen
2000-5-11
2293
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way, on south side of Hwy 20, ca. 0.25 mile west of Hwy 20/16 instersection, near Colusa Co. milepost 3.00.
310
Comment
UCR212316
Rigiopappus leptocladus
Craig D. Thomsen
2000-4-12
2131
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mi west of Hwy 20/16 intersection, milepost 3.00
310
Comment
CDA8541
Rigiopappus leptocladus
T. C. Fuller
1958-5-27
3668
Colusa
South of Highway 20, 1 mile west of junction with Highway 16.
0
Comment
JEPS80179
Rigiopappus leptocladus
L. R. Heckard with J. Hickman
1980-7-3
5331
Colusa
just w Summit Springs (sw <side of?> mt., ca 10 mi w of Stonyford, Colusa-Lake Co. boundary); Snow Mt.
1548
Comment
CHSC84969
Rorippa curvisiliqua var. orientalis
Lowell Ahart
2003-10-23
10664
Colusa
On the east strand of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
CHSC86881
Rorippa nasturtium-aquaticum
B. Castro; S. Innecken
2003-4-2
1412
Colusa
Vicinity of Sites, hills N of the Sites-Lodoga Rd, and Grapevine Creek. In bottom of small stream.
167
Comment
CHSC84962
Rosa californica
Lowell Ahart
2003-10-23
10677
Colusa
Along Squaw Creek, just south of East Park Reservoir, about 1/8 mile northwest of Sites Lodoga Road, about 1 mile north of Lodoga, about 21 miles west of Maxwell.
368
Comment
UC1051706
Rosa gymnocarpa
Helen K. Sharsmith
1953-7-1
4405
Colusa
near Old Mill Camp; Inner North Coast Ranges, Mendocino National Forest, Trough
1036
Comment
SEINET8723619
Rosa gymnocarpa
Helen K. Sharsmith
1953-1
4405
Colusa
Near Old Mill Camp, Trough Springs Ridge, Mendocino National Forest.
1036
Comment
CAS-BOT-BC158728
Rubus ursinus
Roxana Stinchfield
1916-7-8
381
Colusa
Sycamore Slough, Stinchfield Ranch
Comment
CAS-BOT-BC433469
Rumex dentatus
Roxana S. Ferris
1926-4-21
6285
Colusa
3 miles west of Colusa
Comment
CDA2395
Saccharum ravennae
Gordon Leppig
2001-3-29
1541
Colusa
Route 16, 100 meters east of mile marker 4.58.
0
Comment Read comments Jul 31 2014
UCD57287
Saccharum ravennae
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3658
Colusa
BLM Payne Ranch. Craig Canyon. West of Hwy. 16, ca. 2 road miles south of junction of Hwy. 20 and Hwy. 16. Along unimproved road.
322
Comment
CHSC79280
Sagina apetala
B. Castro; L. P. Janeway
2000-4-10
1063
Colusa
Vicinity of Sites in rolling hills near Sulphur Gap, among un-named tributaries to Lurline Creek.
91
Comment
CHSC77928
Sagina decumbens subsp. occidentalis
Beth Hendrickson; Jean Witzman
1999-4-22
Colusa
Vicinity of Antelope Valley and Sites.
152
Comment
UCR146703
Sagittaria
June McCaskill, Et al.
1954-8-9
363
Colusa
c. 1 mi east of Princeton and 500 yds. south of Glenn County line
23
Comment
UCD18528
Sagittaria
June McCaskill; with Mr. Harvey and Loren Davis
1954-8-9
363
Colusa
ca.1 mi. east of Princeton and 500 yds. south of Glenn County line.
Comment
UCD138042
Sagittaria montevidensis subsp. calycina
June McCaskill; W. A. Harvey
1954-8-9
366
Colusa
Grimes - Knights Landing Highway, ca. 3 miles south of Grimes.
Comment
CAS-BOT-BC103026
Salix bonplandiana
Roxana S. Ferris
1926-4-23
6401
Colusa
near Mountain House on Williams - Stonyford Road
Comment
CHSC62849
Salix breweri
Vernon H. Oswald; Lowell Ahart
1994-3-23
6016
Colusa
Frenzel Creek Research Natural Area on the S side of Little Stony Creek, in the section of the E side of Frenzel Creek, S of Stonyford.
518
Comment
CHSC75757
Salix breweri
Vernon H. Oswald; Lowell Ahart
1999-6-22
9786
Colusa
1.5 mi west of Stonyford-Lodoga Road 42 paralleling Little Stony Creek.
426
Comment
HSC71301
Salix breweri
Thomas W. Nelson, Jane Nelson
1979-4-12
4525
Colusa
Along Stony Creek below Digger Pine Campground
Comment
UCD162977
Salix breweri
Jack Major
1963-5-4
s.n.
Colusa
In stream, west of Bear Valley on Bartlett Springs Road. (Exact location unknown. Coordinates estimated by label maker.)
518
Comment
UCD56940
Salix breweri
Ellen Dean; Gordon Harrington and Kate Mawdsley
2007-3-30
3542
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy. 16 and Hwy. 20. Thompson Canyon.
344
Comment
CAS-BOT-BC107839
Salix gooddingii
Gordon H. True
1968-8-6
4576
Colusa
In roadside ditch, on Hwy. between Maxwell and Delevan, ca. 1 mile N of Maxwell
30
Comment
CAS-BOT-BC107840
Salix gooddingii
Alice Eastwood
1921-4-11
10235
Colusa
Colusa
Comment
UCD111126
Salix laevigata
G. F. Hrusa
1996-2-26
12634
Colusa
2.5 miles NW of Sites at base of Little Antelope Grade.
200
Comment
UCD57306
Salix laevigata
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3677
Colusa
BLM Payne Ranch. Lands to the southwest of junction of Hwy. 20 and Hwy. 16. Thompson Canyon, near juncture with Craig Canyon.
362
Comment
UCD61464
Salix laevigata
Ellen Dean; G. Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3910
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek. Approximately 1.5 miles SW of parking lot in Eula Canyon.
310
Comment
UCD82128
Salix laevigata
Ellen Dean; G. Harrington, C. Thomsen,Chiao-Yi Cheng,R. Wilmarth
2009-5-20
5658
Colusa
Walker Ridge. Along Walker Ridge Road, ca. 0.5 road mi N of intersection with road to Indian Valley Reservoir. Parking area, undeveloped roads, flats and slopes on W side of road.
839
Comment
JEPS81275
Salix lasiandra var. lasiandra
L. R. Heckard and J. C. Hickman
1982-7-5
5885
Colusa
s side Snow Mt. (Summit Springs, slope below (s of ) area)
1500
Comment
CDA16096
Salix lasiolepis
G. F. Hrusa
1999-5-16
15047
Colusa
North Coast Ranges; Goat Mountain on S side. At intersection of rd to Young's Corral and Goat Mtn Lookout.
1737
Comment
CHSC96763
Salix lasiolepis
G. F. Hrusa
1999-5-16
15049
Colusa
North Coast Ranges. UTM 10S, 4346931 N, 0523542 E. Below summit ridge of Goat Mountain on S side.
1722
Comment
HSC103855
Salix lasiolepis
G. Fred Hrusa
1999-5-16
15048
Colusa
Below summit ridge of Goat Mountain on south side.
1723
Comment
JEPS122457
Salix lasiolepis
David Isle with David Toren
2003-6-24
2128
Colusa
Mendocino National Forest. NE border of Veratrum spring & meadow, 1/4 mi E of Goat Mtn Rd 16N03 junction w/Horse Glade Rd; (with flowing water)
Comment
JEPS80250
Salix lasiolepis
L. R. Heckard and J. Hickman
1980-9-15
5429
Colusa
slopes below Summit Springs; Snow Mt., <Lake-Colusa Co. boundary>
1524
Comment
CAS-BOT-BC107365
Salix lasiolepis var. lasiolepis
Roxana S. Ferris
1917-4-17
631
Colusa
near Sycamore
Comment
JEPS80820
Salix melanopsis
L. R. Heckard and J. C. Hickman
1981-7-31
5791
Colusa
e side Snow Mt. (<along> Dark Hollow Creek)
1584
Comment
CHSC108062
Salsola soda
B. Castro; Dave Boegner
2011-9-1
1913
Colusa
Sacramento Valley. Larkins Childrens Rancho. 10 air mi NW of Colusa, 3 mi W of the Sacramento River and 800 ft N of the northern boundary of Delevan NWR. Near where Hunters and Logan Creeks empty into the Colusa Basin Drain. Uncommon along outer western edge of managed +- saline wetland of Gunnersfeld Ranch duck hunting club.
17
Comment
CHSC27518
Salvia columbariae
Michael F. Henetz
1978-4-15
16
Colusa
Ca. 65 m n of Salt Creek, ca 15 m n of Hwy. 20, ca. 17.7 km wsw of Williams.
143
Comment
CHSC27550
Salvia columbariae
Scott E. Patton
1978-4-9
7
Colusa
Salt Canyon, n side of Salt Creek, Hwy 20, 11 m wsw of Williams.
143
Comment
JEPS75722
Sambucus mexicana
L. R. Heckard
1974-9-9
3855
Colusa
about 1/4 mi se Foutch Camp (e side of about 60 ft high rocky outcrop); Snow Mt.
1828
Comment
UCD57658
Sambucus nigra subsp. caerulea
Hildegarde Durkin; with Plant Biology 102
2007-4-29
3
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Central part of ranch. Thompson Canyon. North side of Thompson creek. Along trail above Thompson Creek
362
Comment
UC1053451
Sanicula bipinnata
Rimo Bacigalupi, Arthur Holmgren
1950-4-26
3170
Colusa
7.7 mi w of Sites (Grapevine Grade to Lodoga); Grapevine Grade
Comment
CHSC89863
Sanicula crassicaulis
B. Castro; L. P. Janeway
2001-4-19
1232
Colusa
Vicinity of Grapevine Creek, Sites-Lodoga Road, and Scotties Spring. In riparian corridor along dirt road adjacent to perennial N-S-trending creek.
277
Comment
JEPS73498
Sanicula graveolens
L. R. Heckard
1972-7-10
3116
Colusa
near Trout Creek crossing of trail to Box Springs (Snow Mountain); Snow Mountain
1828
Comment
UCD163232
Sanicula tuberosa
Craig D. Thomsen
2001-4-12
2437
Colusa
Bear Creek Botanical Management Area. CalTrans right-of-way along Hwy 20 (south side), about 1 mile west of Hwy 20/16 intersection (about 1/8 mile east of vista point).
345
Comment
UCD57338
Sanicula tuberosa
Robin Testa
2007-3-25
3
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. South side of Hwy 20.
560
Comment
UCD82528
Sanicula tuberosa
Craig Thomsen; G. Harrington
2009-5-12
2884
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd. East-facing hillslope above (west border) Eaton Springs meadow complex.
722
Comment
UCD82861
Sanicula tuberosa
Gordon Harrington
2008-4-13
72
Colusa
BLM Payne Ranch. Slopes to the SW of junction of Hwy 16 and Hwy 20. E of unnamed creek (flowing now).
385
Comment
UCD67087
Schoenoplectus acutus var. occidentalis
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5109
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western edge of ranch on ridge above Cache Creek Canyon. Spring-fed stock pond at base of uphill climb east side of ridge trail.
510
Comment
CAS-BOT-BC111366
Schoenoplectus acutus var. occidentalis
Roxana Judkins [later Mrs. Ferris q.v.] Stinchfield
1916-7-11
470
Colusa
Davis Tule near Sucamore Slough
Comment
CAS-BOT-BC7623
Schoenoplectus americanus
A. A. Heller
1916-6-9
12390
Colusa
Coast Range about 8 miles west of Williams in the blue oak belt.
Comment
POM185714
Schoenoplectus maritimus
Roxana Stinchfield
1916-7-11
467
Colusa
Davis Tule, near Sycamore Slough.
Comment
UCD49961
Schoenoplectus mucronatus
June McCaskill
1954-8-9
359
Colusa
Ca. 2 miles E of Princeton and 300 yards S of Glenn County line.
Comment
UCD55471
Schoenoplectus pungens var. longispicatus
Ellen Dean; Gordon Harrington
2006-10-6
3295
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Ranch can be accessed via north gate which is located on a road on the S side of State Route 20, 2.3 road miles W of jct of State Routes 16 and 20. In Thompson Canyon, along dirt road that parallels ephemeral drainage.
362
Comment
CDA417
Scirpus glaucus
Kingwill
1929-8-23
Colusa
0
Comment
UC1100902
Scirpus maritimus
Malcolm A. Nobs, S. Galen Smith
1949-9-9
1872
Colusa
rice fields 3 mi w Williams; w of Williams
Comment
JEPS21848
Scribneria bolanderi
John R. Swanson
1958-4-26
308
Colusa
1.4 mi w of Bear Valley (on road toward Bartlett Springs)
609
Comment
UCD82729
Scutellaria
Craig Thomsen; G. Harrington
2009-5-14
2910 b
Colusa
Colusa County on Walker Ridge: about 200 yds. south of spur road, 1/2 mile east of Walker Ridge Road, en route to Eaton Springs.
813
Comment
CHSC75613
Scutellaria californica
Vernon H. Oswald; Lowell Ahart
1999-6-22
9775
Colusa
West of Stonyford on Fouts Springs Rd. (M10) 0.5 mi east of Dixie Glade Picnic Area.
975
Comment
JEPS73453
Scutellaria californica
L. R. Heckard
1972-7-8
3053
Colusa
on n side of ridge running se of Snow Mountain (West Peak); West Peak
2011
Comment
JEPS80801
Scutellaria californica
L. R. Heckard and J. C. Hickman
1981-7-30
5772
Colusa
heading up East Ridge of Snow Mountain, West Peak
1950
Comment
UCR225654
Scutellaria californica
Craig D. Thomsen, Gordon Harrington
2008-7-6
2770
Colusa
BLM Payne Ranch, lands to the southwest of the junction of Hwys 20 and 16. Western edge of ranch, near ridge trail that follows the border of Colusa/Lake Counties. Dunsfield Flat stock pond
610
Comment
SBBG6519
Scutellaria siphocampyloides
H. and M. Dearing
1939-5-12
3342
Colusa
near Leesville
457
Comment
UCD57835
Scutellaria siphocampyloides
Gordon Harrington; Diana Hickson, Jack Alderson
2007-4-29
39
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Along Thompson Creek, upstream (going roughly west) from Road Kill Cafe, about 1/2 mile upstream from the breached dam.
398
Comment
CHSC79519
Scutellaria tuberosa
B. Castro; L. P. Janeway
2000-5-2
1108
Colusa
Vicinity of Sites, Sites-Lodoga Rd, and Grapevine Creek.
234
Comment
SFV10451
Scutellaria tuberosa
M. L. Vincent
1968-6-8
779
Colusa
Goat Mountain Road, 1 mile from Stanford turnoff.
Comment
RSA114112
Sedella pentandra
H. L. Mason
1953-5-4
s.n.
Colusa
Little Stony Creek Road 0.25 miles above junction of Little Stony Creek and Trout Creek, Inner North Coast Ranges.
610
Comment
UCD82734
Senecio aronicoides
Craig Thomsen; G. Harrington
2009-5-14
2915
Colusa
Colusa County on Walker Ridge: about 200 yds. south of spur road, 1/2 mile east of Walker Ridge Road, en route to Eaton Springs.
762
Comment
RSA201801
Senecio eurycephalus
J. M. Tucker
1968-5-4
4108
Colusa
Bear Valley, 8.6 miles (by Bear Valley Road) northwest of junction with State Highway 20.
396
Comment
CDA11923
Senecio greenei
G. F. Hrusa
1989-5-7
6078
Colusa
North Coast Biodiversity Arena; N side of Little Stony Creek, approx. 3.7 miles upstream from intersection of Cedar Mtn. Rd. and Stonyford-Lodoga Rd.
Comment
CHSC101592
Senecio sylvaticus
David W. Isle
2002-4-18
1660
Colusa
Mendocino National Forest; N of Fouts Springs, N of Chlorinator Building and road to Bathhouse Trailhead. MDB and M.
524
Comment
CAS-BOT-BC364516
Senecio vulgaris
Roxana S. Ferris
1926-4-21
6273
Colusa
Sycamore Slough 2 miles west of Sycamore
Comment
SEINET3876301
Sequoia sempervirens
James H. Smith
1976-1
s.n.
Colusa
Williams.; 0
Comment
HSC101845
Setaria parviflora
J. P. Smith, J. O. Sawyer
2007-9-2
12411
Colusa
River Rd. N of Colusa
20
Comment
CHSC94412
Setaria viridis
Lowell Ahart
2006-8-9
13137 B
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
UCD92837
Setaria viridis
Beecher Crampton
1958-6-26
4974
Colusa
along Grieve Road, 5.5 miles south of College City.
Comment
JEPS120911
Sidalcea diploscypha
Lowell Ahart, John Dittes, Josephine Guardino
2013-4-26
18647
Colusa
Rocky serpentine outcrop on the N side of Hwy 20, just E of the Lake County line, 12.2 air miles ENE of the town of Clear Lake, 17.1 air miles W of Williams
Comment
UC71652
Sidalcea diploscypha
Miss Alice King
1905-1
Colusa
College City
Comment
UCD14553
Sidalcea diploscypha
John M. Tucker
1980-5-3
4443
Colusa
California, Colusa Co.; Bear Valley, 4.3 mi. south of junction of Brim Road and Bear Valley Road;
Comment
UCD57860
Sidalcea diploscypha
Gordon Harrington
2007-4-17
28
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Destanella Flat, just south of Hwy 20, approximately 3.4 road miles west of the Hwy 16 intersection.
553
Comment
UCR52397
Sidalcea diploscypha
N. Williams, Terry Hines, Ellen Purcell
1988-4-16
53
Colusa
2 mi W on Brim Rd. from Bear Valley Rd. intersection
518
Comment
CHSC110124
Sidalcea keckii
L. P. Janeway
2011-5-11
10279
Colusa
Inner North Coast Ranges. Southeast side of East Park Reservoir, recreation and camping area; 1.4 km north of Sites-Lodoga Road.
373
Comment
JEPS105737
Sidalcea keckii
David Gowen
2004-5-18
84
Colusa
About 1.5 miles south of Stonyford. Road shoulder on the east side.
Comment
JEPS50071
Sidalcea keckii
W. L. Jepson
1932-5-7
16260
Colusa
valley 2 mi above Venado (w Colusa Co.); Venado (valley 2 mi above)
Comment
CHSC91809
Sidalcea oregana subsp. hydrophila
G. F. Hrusa; S. Winterton
2004-6-6
16385
Colusa
Northern California. Inner North Coast Ranges. Mendocino National Forest. Rd 21N06D off 21N06 off Forest Rd. M3. Lower Markham Ridge at small pond site. Pond visible on 7.5' topo.
1348
Comment
JEPS80800
Sidalcea oregana subsp. hydrophila
L. R. Heckard and J. C. Hickman
1981-7-30
5770
Colusa
along Trout Creek (se side of Snow Mt.); , along Trout Creek
1600
Comment
CDA15466
Silene californica
G. F. Hrusa, WTD
1998-6-19
14603
Colusa
North Coast Ranges; Upper Little Stony Creek. Goat Mtn. Rd. ~ 2 km. W of campground.
Comment
SD72209
Silene californica
Eugene Memmler
1969-5-8
102
Colusa
Valley side of coastal hills between Williams and Clear Lake, Highway 20.
149
Comment
SBBG29886
Silene laciniata subsp. californica
L. S. Rose
1936-4-27
36179
Colusa
11 mi NW of Rumsey
304
Comment Read comments Aug 11 2014
SEINET8879658
Silene laciniata subsp. californica
R. R. Halse
2014-3-25
9036
Colusa
Along the Bear Valley Road, ca 1.8 miles WNW of its junction with State Hwy 20.
378
Comment
UCD163877
Silene lemmonii
Craig D. Thomsen
2000-4-12
2525
Colusa
Bear Creek Botanical Management Area. Caltrans right-of-way on south side of Hwy 20, about 1 mile west of Hwy 20/16 instersection.
Comment
CAS-BOT-BC389256
Silene lemmonii
Volney Rattan
1884-6-1
s.n.
Colusa
Summit above Fouts Sp. Coast Mts. North of San Francisco Bay
Comment
CHSC32220
Silene verecunda
James Jokerst
1980-8-6
1053
Colusa
North Coast Ranges. Near Snow Mountain (west). Ridge top.
Comment
CHSC110364
Sinapis arvensis
Richard R. Halse
2010-3-20
7826
Colusa
Along State Hwy 20 ca. 5.4 miles wwest of Colusa (junction of State Hwys 20 and 45).
17
Comment
UCD72467
Sinapis arvensis
Ellen Dean; J. Alderson, N. Voegtly, and C. Thomsen
2007-5-12
3801
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Area of ranch west of Hwy 16, near bridge that spans Bear Creek, ca. 4.5 road miles south of junction of Hwy 16/20. Bank of Bear Creek near north end of bridge, west side of creek.
260
Comment
UCD61438
Sisymbrium altissimum
Ellen Dean; G. Harrington, N. Voegtly, J. Alderson, C. Thomsen
2007-6-24
3883
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwy 16 and Hwy 20. West of BLM equestrian parking lot (Cowboy Camp) on west side of Bear Creek. Approximately 1000 ft NNW of parking lot.
314
Comment
UCD63623
Sisymbrium altissimum
Craig D. Thomsen
2008-3-21
2720
Colusa
BLM Payne Ranch. 0.25 mile south of intersection of Hwy 16 and Hwy 20. Between Bear Creek and Hwy 16.
Comment
UCD81234
Sisymbrium irio
Ellen Dean; K. Mawdsley and B. Rice
2009-5-6
5571
Colusa
Payne Ranch, lands to the SW of the jct. of Hwys. 16 and 20. Along Bear Creek south of Brophy Canyon, near old access road that leaves Hwy. 16 near milepost 6.
218
Comment
CAS-BOT-BC75280
Sisymbrium officinale
Roxana S. Ferris
1926-4-21
6272
Colusa
On Sycamore Slough 2 miles west of Sycamore.
Comment
CHSC115383
Sisymbrium orientale
Lowell Ahart
2015-4-1
19993
Colusa
Burned over in 2012, rocky serpentine outcrop on the north side of State Highway 20, 1/2 mile east of Lake County Line, 12 miles (air) east-northeast of Clear Lake (town), 17 miles (air) west of Williams. Inner Coast Range.
520
Comment
HSC31314
Sisyrinchium bellum
Carter Schleicher
1974-5-4
27
Colusa
0.75 mi. from T junction of Walker Ridge Rd. and Indian Valley, near Clyde Mine
854
Comment
RSA0115083
Sisyrinchium bellum
Lowell A. Ahart, John Dittes, Josephine Guardino
2013-4-26
18644
Colusa
On the north side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
567
Comment
HSC59568
Sisyrinchium bellum
Rick Lundquist
1979-4-14
22
Colusa
Bear Valley Rd., 13 mi. N of Hwy. 20
396
Comment
CHSC114061
Solanum parishii
Richard R. Halse
2012-3-29
8456
Colusa
Along State Hwy. 20 ca. 6.8 miles northeast of its junction with State Hwy16
176
Comment
CHSC28810
Solanum parishii
Laraine Roothoff
1979-3-31
1
Colusa
Salt Canyon, n side of Salt Creek, Hwy 20, 11 mi wsw of Williams.
143
Comment
HSC41848
Solanum parishii
N. G. Sugihara
1977-4-24
38
Colusa
Walker Ridge Rd. above Barrel Springs Campground
701
Comment
UCD13386
Solanum parishii
Charles Martin
1986-5-17
35
Colusa
Mendocino National Forest. 3.7 miles west of Stonyford on Forest Service Road 18NO1.
Comment
NY723192
Solanum rostratum
L. Ahart
1980-6-11
2370
Colusa
9¼ miles north of Colusa
35
Comment
CAS-BOT-BC35921
Solanum umbelliferum
Roxana S. Ferris
1926-4-23
6591
Colusa
Near Stonyford.
Comment
UC1733755
Solanum umbelliferum
Kay H. Beach
1940-5-16
658
Colusa
Colusa and Lake county line
Comment
CDA15549
Solidago californica
G. F. Hrusa
1998-10-28
14900
Colusa
North Coast Ranges; along Cedar Camp Rd. as it enters Little Stony Ck. Cyn., approx. 1 mi. from Lodoga/Stonyford Rd.
Comment
RSA695736
Solidago canadensis subsp. elongata
D. W. Taylor
1994-10-7
14713
Colusa
Little Stony Creek along Goat Mountain Road 2.1 miles west from junction Lagoda-Stonyford Road.
427
Comment
CHSC117781
Solidago velutina subsp. sparsiflora
David Isle; Terril Wolt
2016-7-15
2168
Colusa
North Coast Range:~5 1/2 miles W of Stonyford off S side Fouts Springs Rd M10 (18N01.2). Also ~5/8 mile SE of M10 Jct. w/ Trough Sp R Rd M5 (18N07.1) Fouts Spring California.
609
Comment
SACT002290
Sorghum halepense
Herbert Mason
1945-9-19
Colusa
Below causeway over Butte Sink spillway, east bank of Sacramento River , 1 mile north of Colusa.
Comment
UC1100454
Sorghum halepense
Herbert L. Mason
1945-9-10
12723
Colusa
1 mi. n. Colusa (below causeway over Butte Sink spillway, e. bank Sacramento R.); Sacramento R.
Comment
UCR201571
Sorghum halepense
George K. Helmkamp, E. A. Helmkamp
2008-10-14
14268
Colusa
Sacramento Valley, along River Road (generally following the Sacramento River), 8.4 miles north of Colusa
17
Comment
CAS-BOT-BC390100
Spergularia bocconi
A. A. Heller
1916-6-9
12392
Colusa
Along the state highway near Colusa
Comment
RSA0098748
Spergularia macrotheca
Malcolm A. Nobs, S. Galen Smith
1949-6-18
874
Colusa
Highway 99W, near Delevan.
Comment
CHSC29847
Spergularia macrotheca var. leucantha
K. R. Stern
1980-6-30
6658
Colusa
Vernal pool area, south border Colusa National Wildlife Refuge.
45
Comment
CAS-BOT-BC390759
Spergularia marina
G. B. Rossbach; R. P. Rossbach
1938-5-31
636
Colusa
2 mi. so. of Maxwell
Comment
CAS-BOT-BC390761
Spergularia marina
G. B. Rossbach; R. P. Rossbach
1938-5-31
640
Colusa
3 3/4 mi. south of Maxwell
Comment
CAS-BOT-BC390764
Spergularia marina
G. B. Rossbach; R. P. Rossbach
1938-5-31
638
Colusa
5 mi. west of Colusa
Comment
CAS-BOT-BC390765
Spergularia marina
G. B. Rossbach; R. P. Rossbach
1938-5-31
636
Colusa
2 mi. so. of Maxwell
Comment
CDA32689
Sporobolus cryptandrus
Howard Johnson
1958-12-14
Colusa
Arbuckle, Howard Johnson Property, Route 1, Box 91
0
Comment
CHSC95011
Stachys ajugoides var. rigida
Lowell Ahart
2006-10-31
13539
Colusa
On the south side of road M 10, about 6 miles by road west of Stonyford.
583
Comment
JEPS104386
Stachys albens
Lowell Ahart
2003-7-14
10381 -A
Colusa
Along a stream, field on the south side of Highway 20, ca 2 mi sw of the intersection of Highway 20 and Bear Valley Rd, ca 21 mi (by road) sw of Williams.
520
Comment
JEPS94742
Stachys albens
Vernon H. Oswald and Lowell Ahart
1998-7-15
9268
Colusa
Bartlett Springs Road 1.6 mi w of Bear Valley Road; Bartlett Springs Road
487
Comment
SEINET3450931
Stachys albens
Unknown
2003-7-14
10381 A
Colusa
Williams, Williams, about 21 road miles southwest, south side of highway 20, about 2 miles southwest of the intersection of highway 20 and Bear Valley Road
520
Comment
UCD70231
Stachys albens
D. Sanchez-Mata
1998-6-24
s.n.
Colusa
Bear Valley Road. Bear Valley Creek.
370
Comment
JEPS120802
Stachys rigida var. rigida
Lowell Ahart
2013-10-1
19080
Colusa
Strand of East Park Reservoir, about 2.5 air miles SE of Stonyford, about 2.5 miles NW of Lodoga, about 10 air miles NW of Sites.
Comment
CHSC61429
Stachys stricta
Vernon H. Oswald
1993-8-16
5806
Colusa
Sacramento National Wildlife Refuge. Refuge located ca. 7 mi S of Willows, W 1/4 of Tracts 44, near the S boundary of the refuge. Growing on N bank of Hunters Creek.
24
Comment
JEPS80121
Stellaria calycantha
L. R. Heckard with J. Hickman
1980-7-1
5277
Colusa
ca 10 mi w Stonyford (Snow Mt., cirque between East and West Peaks); Snow Mt.
2042
Comment
UCR212364
Stellaria media
Craig D. Thomsen
2000-3-31
2074
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mi west of Hwy 20/16 intersection, milepost 3.00
310
Comment
CHSC86516
Stellaria nitens
B. Castro
2003-3-17
1382
Colusa
Vicinity of Sites, hills N of the Sites-Lodoga Rd, and Stone Corral Creek.
188
Comment
CHSC94466
Stellaria pallida
Lowell Ahart
2006-8-9
13165
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
JEPS80756
Stephanomeria lactucina
L. R. Heckard and J. C. Hickman
1981-7-29
5723
Colusa
spur about 1 km se Summit Springs (s side of Snow Mt.); Snow Mt.
1554
Comment
CHSC79695
Stephanomeria virgata subsp. pleurocarpa
G. F. Hrusa
1998-10-28
14899
Colusa
Inner Coast Ranges. Along Cedar Camp Rd. as it enters Little Stony Ck. Cyn., approx. 1 mi. from Lodoga/Stonyford Rd.
400
Comment
UCD167948
Streptanthus
James Neilson
1982-7-1
4088
Colusa
near mouth of Frenzel Creek. (Exact location unknown. Coordinates estimated by label maker.)
Comment
CHSC27624
Streptanthus breweri
Robert Schlising; Timothy Spira
1978-5-13
3245
Colusa
Ca 0.5 mi NW jct Hwy 20 and Bear Valley (= Wilbur Springs) Road, along latter.
Comment
UCD164316
Streptanthus breweri
Ryan O'Dell
2010-7-1
s.n.
Colusa
UTM zone 10, 545440 4334598. [UTM coordinates place this location on east side of Walker Ridge along Bartlett Springs Road.]
Comment
UCD66953
Streptanthus breweri
Ellen Dean; Davis Botanical Society
2008-5-31
4997
Colusa
west of I-5 at Maxwell, along Goat Mountain Road following Little Stoney Creek, Little Stoney Creek Canyon.
414
Comment
UCD70220
Streptanthus breweri
D. Sanchez-Mata
1998-6-24
s.n.
Colusa
Bear Valley. Bear Valley Road. Bear Valley Creek. Serpentine annual grasslands in serpentine chaparral edges.
370
Comment
CAS-BOT-BC61234
Streptanthus breweri
Roger Raiche
1985-5-25
RR 50459
Colusa
West of Williams, Bear Valley, Bear Valley Road about 1 mile from its origin at Route 20.
365
Comment
HSC62796
Streptanthus breweri
M. A. Ericksen
1979-4-14
207
Colusa
Adjacent to Bear Valley Rd., 3.9 mi. from Hwy. 20
Comment
SEINET11993713
Streptanthus breweri
Unknown
1985-1
50459
Colusa
W of Williams, Bear Valley, on Bear Valley Rd about 1 mi from its origina at Rt. 20
366
Comment
UC1292771
Streptanthus breweri
Freed W. Hoffman
2784
Colusa
N of road from Leesville to Bartlett Springs, along the summit between Colusa and Lake counties
Comment
UC1051749
Streptanthus breweri var. breweri
Helen K. Sharsmith
1953-6-17
4251
Colusa
above Wilbur Springs; Inner North Coast Ranges, Wide Awake Mercury Mine
462
Comment
UC956515
Streptanthus breweri var. breweri
Freed W. Hoffman
1948-6-28
Colusa
1.8 mi n Fouts Springs; Red Bridge
441
Comment
UCD57303
Streptanthus breweri var. breweri
Ellen Dean; C. Thomsen, S. Bledsoe, J. Alderson, M. Starbuck
2007-4-7
3674
Colusa
BLM Payne Ranch. Lands to the southwest of junction of Hwy. 20 and Hwy. 16. Thompson Canyon, near juncture with Craig Canyon. Above Thompson Creek.
366
Comment
UCD66907
Streptanthus breweri var. breweri
Jack Alderson
2008-4-27
s.n.
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of Hwys 20 and 16. Slopes to the WNW of Cowboy Camp on the west side of Bear Creek.
427
Comment
SEINET11993369
Streptanthus breweri var. hesperidis
Unknown
1985-1
50460
Colusa
Walker Ridge, Brim Rd nr intersection W Walker Ridge Rd
Comment
HSC45730
Streptanthus glandulosus
M. Alcasas
1978-4-22
41
Colusa
Bear Valley Rd., 1.5 mi. from its junction with Hwy. 20
412
Comment
RSA293147
Streptanthus glandulosus
J. P. Smith, Jane P. Nelson, Thomas W. Nelson
1978-4-2
9565
Colusa
Bear Valley Road, 2.1 miles from its junction with State Route 20.
366
Comment
UC1552823
Streptanthus glandulosus subsp. glandulosus
Frederica Bowcutt
1985-5-10
513
Colusa
about 3 mi se Wilbur Springs (1 mi w of Hwy 20, base of steep s-facing hillsides); Wilbur Springs 15' Quad, Big Valley Shale Barrens
Comment
CAS-BOT-BC87396
Streptanthus morrisonii
G. L. Stebbins
1966-6-6
6431
Colusa
Lovelady Ridge, south of South Fork, Stony Creek, 6.5 miles south of Stonyford.
609
Comment
UCD164318
Streptanthus morrisonii
Ryan O'Dell
2010-7-1
s.n.
Colusa
UTM zone 10, 538344, 4348715. [UTM coordinates place this location on the south side of Little Stoney Creek, west of Lodoga.]
588
Comment
UCD167946
Streptanthus morrisonii
James Neilson
1982-7-1
4089
Colusa
About 6 miles west of Lodoga, about 1 mile south of mouth of Frenzel Creek. (Exact location unknown. Coordinates estimated by label maker.)
Comment
RSA388855
Styrax redivivus
Clinton C. Shock
1980-5-3
68
Colusa
2 miles W of base of Bear Valley, 14.6 miles north of State Hwy 20. East of Walker Ridge.
488
Comment
SBBG83456
Styrax redivivus
C. C. Shock
1980-5-3
68
Colusa
2 mi W of base of Bear Valley, 14.6 mi N of St Hwy 20, E of Walker Ridge
487
Comment
UCD119091
Styrax redivivus
Tom Aldrich
1975-5-25
17
Colusa
2.3 miles west of Leesville Grade, Wilbur Springs Road junction, toward Walker Ridge.
Comment
UCD119113
Styrax redivivus
D. Sanchez-Mata; P. Rodriguez-Rojo
1997-7-25
s.n.
Colusa
Williams (c. 15 miles West). Blue Ridge near Bear Creek.
350
Comment
CHSC29751
Suaeda nigra
K. R. Stern
1980-6-30
6653
Colusa
Vernal pool, south central border of Colusa National Wildlife Refuge.
45
Comment
CAS-BOT-BC97650
Symphyotrichum chilense
Milo S. Baker
1946-9-4
11618
Colusa
Butte Sink, near locked gate of Colusa Gun Club
Comment
JEPS80880
Symphyotrichum spathulatum
L. R. Heckard and J. C. Hickman
1981-7-31
5801
Colusa
Dark Hollow Creek, (e side of Snow Mt.) Snow Mt.
1645
Comment
UC71764
Symphyotrichum spathulatum
H. P. Chandler
1905-9-14
Colusa
Princeton
Comment
UC71775
Symphyotrichum spathulatum
H. P. Chandler
1905-9-14
Colusa
Princeton
Comment
JEPS24496
Symphyotrichum subulatum
J. H. Thomas
1960-8-30
8864
Colusa
5 mi nw, along road to Sycamore College City
Comment
CAS-BOT-BC99395
Symphyotrichum subulatum var. parviflorum
J. H. Thomas
1960-8-30
8864
Colusa
About 5 miles northwest of College City along road to Sycamore
Comment
CAS-BOT-BC99394
Symphyotrichum subulatum var. parviflorum
A. A. Heller
1939-10-1
15484
Colusa
places between Williams and Maxwell
Comment
JEPS81289
Taeniatherum caput-medusae
L. R. Heckard and J. C. Hickman
1982-7-5
5900
Colusa
Summit Springs, s side of Snow Mountain Summit Springs; Snow Mountain, Summit Springs
1500
Comment
UCD86110
Taeniatherum caput-medusae
Beecher Crampton
1958-5-19
4788
Colusa
8.5 miles east (probably west) of Williams, just off of Highway 20.
Comment
HSC41184
Tamarix parviflora
Robert M. Specht, John Rehling
1976-4-12
383
Colusa
7.5 mi. S of Hwy. 20 on Hwy. 16
Comment
HSC62945
Tamarix parviflora
Marla J. Carollo
1979-4-14
29
Colusa
Bear Valley Rd., 3.9 mi. N of Hwy. 20, next to Bear Creek.
412
Comment
RSA296726
Tamarix parviflora
Michael Dalke
1979-4-14
51
Colusa
Bear Valley Road, 3.9 miles N of State Route 20.
412
Comment
UCD57549
Tamarix parviflora
Cindy Yip; with Plant Biology 102
2007-4-29
2
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Meadow on the west side of State Route 16, ca. 2 road miles south of intersection with State Route 20.
304
Comment
CHSC77944
Tetrapteron graciliflorum
Beth Hendrickson; B. Castro, L. P. Janeway, Mary Ann Griggs
1999-4-12
Colusa
Vicinity of Logan Ridge and Golden Gate.
158
Comment
UCD163682
Tetrapteron graciliflorum
Craig Thomsen
1999-4-15
1983
Colusa
Bear Valley. About 5 miles north of Hwy 20, west of Bear Valley Rd.
Comment
UCD163838
Tetrapteron graciliflorum
Craig D. Thomsen
2001-4-12
2467
Colusa
Bear Valley. About 7 miles north of Hwy 20.
Comment
UCD71258
Tetrapteron graciliflorum
James I. MOSBY
1984-4-21
6
Colusa
Bear Valley, 10 miles north on Bear Valley Road; on moist clay soil; not very abundent.
426
Comment
CAS-BOT-BC240289
Thalictrum fendleri
Craig D. Thomsen; J. Wiegand; S. Harrison; G. Harrington; A. Fulks
2008-4-22
2730
Colusa
Walker Ridge. Eaten Springs, 4 mi N of Hwy 20, ca. 1.5 mi E of Walker Ridge Rd.
609
Comment
UCD81708
Thalictrum fendleri var. polycarpum
Ellen Dean; K. Mawdsley,G. Harrington,R. Wilmarth,B. Rice,E. Salvia
2009-5-27
5715
Colusa
Walker Ridge. Along Walker Ridge Road. Til Jones Spring area on W side of road, ca. 6.5 road mi N of junction with Hwy 20. W side of road.
833
Comment
UCD82585
Thalictrum fendleri var. polycarpum
Craig D. Thomsen; J. Wiegand, S. Harrison, G. Harrington, A. Fulks
2008-4-22
2730
Colusa
Walker Ridge. Eaton Springs, 4 mi N of Hwy 20, ca. 1 mi E of Walker Ridge Rd.
609
Comment
CAS-BOT-BC399735
Thalictrum polycarpum
A. F. Hough
1924-6-22
1
Colusa
McDaniel Ranger Station
914
Comment
UCR47922
Thelypodium flavescens
Walter C. Overton
1980-4-14
s.n.
Colusa
Side canyon on road into Bear Valley, c. 1 mi. north of junction of State Hwys 16 and 20.
Comment
UCD163237
Thinopyrum intermedium
Craig D. Thomsen
2000-6-23
2422
Colusa
Bear Creek Botanical Management Area. CalTrans right-of-way along Hwy 20 (south side), about 1 mile west of Hwy 20/16 intersection.
345
Comment
HSC66006
Thysanocarpus curvipes
Teri Bartowski, Shane Feusier, Ruth Takaki, Carol Zimmerer
1980-4-19
41
Colusa
5.4 miles from Lodoga, along Little Stony Creek at Digger Pine Campground
Comment
HSC72161
Thysanocarpus curvipes
J. P. Smith, Thomas W. Nelson, Jane P. Nelson
1978-4-2
9536
Colusa
Bear Valley Rd., 1.3 mi. from its junction with Hwy. 20
366
Comment
SEINET3166341
Thysanocarpus curvipes subsp. curvipes
P. J. Alexander, C. D. Bailey
2009-4-1
973
Colusa
East slope of the North Coast Ranges, Mendocino National Forest, east side of Mill Creek 0.8 miles SSW of its confluence with South Fork Stony Creek, 6.3 miles WSW of Stonyford.
509
Comment
CHSC62927
Thysanocarpus curvipes var. curvipes
Vernon H. Oswald; Lowell Ahart
1994-4-6
6064
Colusa
Goat Mtn. Rd. at Sullivan Creek, 1.2 mi SW of Digger Pine Flat, S of Stonyford. On the slopes bordering Sullivan Creek.
469
Comment
CHSC60076
Thysanocarpus laciniatus
Jana Burgess
1987-4-4
13
Colusa
Salt Canyon, n side of Salt Creek, Hwy 20, 11 mi. wsw of Williams.
143
Comment
SEINET5731492
Thysanocarpus radians
Frank Polach
1967-1
20
Colusa
Bear Valley; Bear Valley
402
Comment
UC72283
Tofieldia occidentalis subsp. occidentalis
Milo S. Baker
1898-8-22
552
Colusa
along a stream Bear Valley Mountains
Comment
CHSC62946
Tonella tenella
Vernon H. Oswald; Lowell Ahart
1994-4-6
6068
Colusa
Goat Mtn. Rd. at Sullivan Creek, 1.2 mi SW of Digger Pine Flat, S of Stonyford.
469
Comment
UCD41197
Torilis nodosa
James Salyards
1986-5-17
86 -
Colusa
Along Maxwell-Sites Road, 0.95 mi. east of Sites.
Comment
CAS-BOT-BC234976
Torreya californica
Ellen Dean; G. Harrington; K. Mawdsley; J. Shepard
2010-5-1
5950
Colusa
Walker Ridge. Along Walker Ridge Road. 10 road miles N of intersection with Hwy 20. Just N of radio tower at Cold Spring Mountain on border with Lake County
971
Comment
UCD93191
Torreyochloa pallida var. pauciflora
Freed W. Hoffman
1948-6-28
2504
Colusa
Lower Letts Valley, western part of county.
Comment
CHSC31359
Toxicoscordion fremontii
P. Lynn Lester
1980-3-31
13
Colusa
Ca. 10 yds sw of Mendocino Nat. Forest Rd 5, ca. 0.5 mi sw of jct with Mend. Nat. For. Rd 10 (Fouts Spring Rd, Rd 43), ca. 6 mi wsw of Stonyford.
762
Comment
UCD139848
Toxicoscordion fremontii
G. Robinson
1984-4-21
2
Colusa
Bear Valley; west of Wilbur Springs Road, 3.2 miles north of Highway 20, east of a creek, along a fence.
390
Comment
UCD139884
Toxicoscordion venenosum var. venenosum
W. K. Sutton
1931-2-26
2176
Colusa
Maxwell.
Comment
UCR55863
Trichocoronis wrightii
J. M. Tucker
1953-8-28
2675
Colusa
rice field 7 mi east of Arbuckle
Comment
JEPS104227
Trichostema laxum
Lowell Ahart
2003-7-14
10381
Colusa
Along a drainage, field on the south side of Highway 20, ca 2 mi sw of the intersection of Highway 20 and Bear Valley Rd, ca 21 mi (by road) sw of Williams.
520
Comment
UC725735
Trichostema laxum
A. A. Heller
1941-9-22
Colusa
just E of Lake County line
Comment
UCSC005368
Trifolium
Randall Morgan
1995-5-16
2628
Colusa
Bear Valley
Comment
UCSC006007
Trifolium
Randall Morgan
1996-5-8
2922
Colusa
Seed from Bear Valley
Comment
HSC72139
Trifolium albopurpureum
J. P. Smith, Jane P. Nelson, Thomas W. Nelson
1978-4-2
9571
Colusa
Bear Valley Rd., 2.1 mi. from its junction with Hwy. 20
366
Comment
POM20227
Trifolium albopurpureum
Roxana S. Ferris
1917-4-12
53 .9
Colusa
4 miles east of Williams.
Comment
UCD81253
Trifolium albopurpureum
Ellen Dean; G. Harrington, R. Willmarth, B. Rice, and C. Thomson
2009-4-8
5418
Colusa
BLM Bear Creek (Payne) Ranch. Lands to the SW of the intersection of Hwys. 16 and 20. South of the canyon that is located to the south of Brophy Canyon and north of the road leading up from the confluence of Bear and Cache Creeks.
365
Comment
UCSC010480
Trifolium albopurpureum
Dylan M. Neubauer, Tim Forsell
2016-3-30
590
Colusa
(NCoRI) Bear Valley, Bear Valley Road, 0.67 air miles south-southeast of junction with Wilbur Springs Road
381
Comment
SFV121337
Trifolium albopurpureum
J. M. Tucker, D. Dreyfus
1967-4-29
4036
Colusa
South end of Bear Valley, 6.3 miles north of junction of Bear Valley Road with State Highway 20.
427
Comment
UC1049532
Trifolium albopurpureum var. albopurpureum
Rimo Bacigalupi
1950-4-16
3113
Colusa
4 mi s Ladoga (6 mi n of Leesville, along Little Indian Creek); Inner North Coast Ranges, eastern base, Indian Valley
Comment
CHSC36148
Trifolium albopurpureum var. dichotomum
Charmaine Rust
1980-4-17
12
Colusa
Ca. 0.3 mi w of jct of Hwys 20 and 165, s side of Bear Creek, ca. 18 mi sw of Williams.
321
Comment
CHSC118881
Trifolium angustifolium
David Isle
2017-5-12
2170
Colusa
Foothills E Edge N Coast Range:~0.7 mile SW of (downtown) Stonyford General Store; Between Handlebar Ranch Firebreak and N-S fenceline, just W of Isle property.
371
Comment
CHSC112232
Trifolium bifidum
Lowell Ahart
2013-5-1
18662
Colusa
On the east side of Bear Valley Road, about 2 1/2 miles (by road) northwest of the intersection of State Highway 20 and Bear Valley Road.
533
Comment
CHSC115392
Trifolium bifidum var. bifidum
Lowell Ahart
2015-4-10
20009
Colusa
In a small meadow, on the south side of Brim Road, about 2 miles west of the intersection of Bear Valley Road and Brim Road, about 17 miles (air) west of Williams.
500
Comment
UC80312
Trifolium bifidum var. bifidum
Katharine Brandegee
Apr 1889
Colusa
Colusa County
Comment
CHSC107963
Trifolium depauperatum var. amplectens
B. Castro; T. Boullion
2011-4-20
1840
Colusa
Sacramento Valley. Extreme W edge of Sacramento Valley; ca 5 air mi NW of Maxwell, 0.8 mi SE of Funks Reservoir and 1000 ft northeast of Tehama-Colusa Canal. In grassy vernally moist swale which just north of large +- saline/alkaline wetland/marsh, in small vernal pool.
49
Comment
CHSC27812
Trifolium depauperatum var. depauperatum
Jan M. Karaz
1978-4-9
8
Colusa
Ca. 0.3 mi w of jct of Hwys 20 and 16, s side of Bear Creek, 18 mi sw of Williams.
321
Comment
JEPS89584
Trifolium depauperatum var. truncatum
Dean W. Taylor
1992-4-16
12407
Colusa
stony hillside ca. 0.4 mi. due w. from spillway into Little Stony Creek (East Park Reservoir); Inner N. Coast Range, Gilmore Peak Quad.
411
Comment
RSA590142
Trifolium depauperatum var. truncatum
Michael A. Vincent, Robert Rhode, Karl Vincent
1996-3-30
7289
Colusa
Along Bear Valley Rd., 2.5 mi. N jct. Wilbur Springs Rd.
Comment
UCD35562
Trifolium dichotomum
Beecher Crampton
1958-4-21
4736
Colusa
13.8 miles NW of Rumsey, along State Highway 16.
Comment
CHSC59540
Trifolium fucatum
Roberta Walker
1992-4-4
9
Colusa
Ca. 0.3 mi w of jct of Hwys 20 and 16, s side of Bear Creek, ca. 18 mi sw of Williams.
321
Comment
JEPS98411
Trifolium fucatum
Vernon H. Oswald
2000-3-27
9901 B
Colusa
ca. 2 mi S of Stonyford (Lodoga-Stonyford Road)
381
Comment
UCD15420
Trifolium fucatum
Margit Sands
1985-4-13
22
Colusa
In Bear Valley, 3.8 miles north of Wilbur Hot Springs Road.
390
Comment
SEINET12161438
Trifolium fucatum
S. M. Leary
1978-1
4
Colusa
ca .3 mi W of Jct of Hwys 20 & 16, S side of Bear Creek, ca 18 mi SW of Williams. Wilbur >>
322
Comment
UCD35784
Trifolium fucatum
Beecher Crampton
1962-4-17
6221
Colusa
3.3 miles north of College City.
Comment
UC80532
Trifolium gracilentum
Katharine Brandegee
Apr 1889
Colusa
Leesville
Comment
UCD63738
Trifolium hirtum
Craig D. Thomsen
2008-5-23
2744
Colusa
BLM Payne Ranch. Southwest of intersection of Hwy 16 and Hwy 20. About 1 mile south of Hwy 20 (south of Destanella Flat) and 2.5 miles west of Hwy 16.
415
Comment
UCD64277
Trifolium hirtum
Craig D. Thomsen
2000-3-31
2076
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mile west of Hwy 20/16 instersection, Colusa Co. milepost 3.00.
310
Comment
UCR206382
Trifolium hirtum
George K. Helmkamp, E. A. Helmkamp
2009-5-20
14754
Colusa
Inner North Coast Ranges, along CA-16, 1.8 miles north of the Yolo County line
271
Comment
CHSC77931
Trifolium obtusiflorum
Jean Witzman; Beth Hendrickson
1999-5-6
Colusa
Vicinity of Antelope Valley, Huffmaster Road, and Sulphur Gap.
137
Comment
JEPS110476
Trifolium obtusiflorum
Lowell Ahart
2006-8-9
13130
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford
347
Comment
JEPS121122
Trifolium obtusiflorum
Lowell Ahart
2013-5-1
18679
Colusa
On the N side of the wash, N side of Hwy 20, just E of Lake County line, 12.2 air miles ENE of the town of Clear Lake, 17.1 air miles W of Williams.
Comment
RSA0118786
Trifolium obtusiflorum
Lowell A. Ahart
2013-5-1
18679
Colusa
On the north side of the wash, north side of State Highway 20, just east of Lake County Line, 12.2 miles (air) east-northeast of Clear Lake (town), 17.1 miles (air) west of Williams.
567
Comment
SBBG119886
Trifolium obtusiflorum
L. Ahart
2006-8-9
13130
Colusa
N side and under bridge across Stony Crk, just N of Stonyford
347
Comment
UCD80899
Trifolium subterraneum
Ellen Dean; w/ Destanella Flat Tour
2009-3-28
5299
Colusa
BLM Bear Creek (Payne) Ranch, lands to the SW of the jct of Hwys 16 and 20. Destanella Flat, just E of the Lake County border, ca. 3.4 road miles west of Hwy 16 along Hwy 20, south side of Hwy 20.
560
Comment
CHSC94405
Trifolium variegatum
Lowell Ahart
2006-8-9
13131
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
HSC47741
Trifolium variegatum
Thomas W. Nelson, Jane P. Nelson
1978-4-29
3946
Colusa
Along Bear Valley Rd., 2.5 mi. from junction with Hwy. 20
366
Comment
JEPS82351
Trifolium variegatum var. variegatum
L. R. Heckard
1969-5-28
2234
Colusa
ca 6 air mi w Stonyford (along Stony Creek); Four Springs
Comment
UCSC005823
Trifolium willdenovii
Randall Morgan
1996-5-24
2970
Colusa
Bear Valley
Comment
CHSC112003
Trifolium wormskioldii
David Isle; David Toren
2003-6-24
2127
Colusa
Veratrum spring and mdw 1/4 mi E of Goat Mtn Rd 16N03 jct w/Horse Glade rd.
1670
Comment
UCD148048
Trillium chloropetalum
Greg Kareofelas
2014-4-12
s.n.
Colusa
Mendocino National Forest: Mill Valley Campground.
1228
Comment
UCD58100
Triphysaria eriantha
Ellen Dean; C. Thomsen, S. Bledsoe, G. Harrington, D. Hickson
2007-3-25
3477
Colusa
BLM Payne Ranch. Lands to the southwest of the intersection of Hwy. 16 and Hwy. 20. Destinella Flat, just E of the Lake County Border. Ca. 3.4 miles along Hwy. 20 from junction of Hwy. 20 and Hwy. 16.
560
Comment
UCR212332
Triphysaria eriantha
Craig D. Thomsen
2000-3-31
2057
Colusa
Bear Creek Botanical Management Area. On Caltrans right-of-way, south side of Hwy 20, 0.25 mi west of Hwy 20/16 intersection, milepost 3.00
310
Comment
JEPS80812
Trisetum canescens
L. R. Heckard and J. C. Hickman
1981-7-31
5785
Colusa
n side of rocky promontory called Fouts Springs Overlook (e side of Snow Mt.); Snow Mt.
1783
Comment
HSC85828
Triteleia laxa
Jeff Dunk, Tallchief Comet, David Munger
1987-4-11
63
Colusa
Bartlett Springs Rd.
Comment
SEINET3127298
Triteleia laxa
M. A. King
1905-1
sn
Colusa
Near Arbuckle [hand written], collected near College City, Sacramento Valley [printed label
Comment
UCD14274
Triteleia laxa
Gregory Sutton
1974-5-4
78
Colusa
Colusa County; along Highway 20, 8 miles west of Williams.
91
Comment
SEINET3243503
Triteleia peduncularis
Helen K. Sharsmith
1953-1
4274
Colusa
East slope of Snow Mountain on Bonny Doon road, Mendocino National Forest.
671
Comment
CAS-BOT-BC67364
Tropidocarpum gracile
Roxana S. Ferris
1917-4-12
537
Colusa
4 miles east of Williams.
Comment
CHSC90201
Tropidocarpum gracile
A. Francis
1989-4-1
1
Colusa
Salt Canyon, n side of Salt Creek, Hwy 20, 11 mi wsw of Williams.
143
Comment
JEPS118683
Tropidocarpum gracile
David Isle, Ronda Isle
2009-4-1
1910
Colusa
W of Isle barn & field adj garden fence. 2253 Dennis Dr, Stonyford. Gilmore Peak 7.5' quad.
Comment
UCD163866
Typha angustifolia
Craig D. Thomsen
2001-5-31
2554
Colusa
Bear Creek Canyon, south of Bear Valley. About 4 miles north of Hwy 20.
Comment
CHSC94390
Typha domingensis
Lowell Ahart
2006-8-22
13208
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
UCD55448
Typha domingensis
Ellen Dean; Gordon Harrington
2006-10-6
3273
Colusa
Payne Ranch (owned by BLM), lands to the SW of the intersection of State Routes 20 and 16. Ranch can be accessed via north gate which is located on a road on the S side of State Route 20, 2.3 road miles W of jct of State Routes 16 and 20. In Thompson Canyon, along dirt road that parallels ephemeral drainage.
374
Comment
UCD83752
Umbellularia californica
Ellen Dean; G. Harrington, K. Mawdsley, J. Shepard
2010-5-1
5949
Colusa
Walker Ridge. Along Walker Ridge Road. 10 road miles N of intersection with Hwy 20. Just N of radio tower at Cold Spring Mountain on border with Lake County.
971
Comment
CHSC115397
Uropappus lindleyi
Lowell Ahart
2015-4-1
19997
Colusa
Inner North Coast Range. On the north side of State Highway 20, 1/2 mile east of Lake County Line, 12 miles (air) east-northeast of Clear Lake (town), 17 miles (air) west of Williams.
520
Comment
CHSC89856
Uropappus lindleyi
B. Castro; L. P. Janeway
2001-4-18
1237
Colusa
Vicinity of Grapevine Creek, Sites-Lodoga Road, and Scotties Spring. On edges of low terrace just above riparian corridor paralleling dirt road, adjacent to perennial N-S-trending creek.
268
Comment
UCD163328
Uropappus lindleyi
Craig D. Thomsen
2009-5-3
2794
Colusa
Walker Ridge. Vicinity of Walker Ridge Rd., 0.25 miles north of Hwy 20.
Comment
UCD82163
Uropappus lindleyi
Ellen Dean; G. Harrington, C. Thomsen,R. Wilmarth,Chiao-Yi Cheng
2009-5-20
5695
Colusa
Walker Ridge. Til Jones Spring area along Walker Ridge Road.
833
Comment
CHSC94983
Urtica dioica subsp. gracilis
Lowell Ahart
2006-10-31
13535
Colusa
West of a small stream, Big Springs, on the south side of Letts Lake, about 13 miles (air) southwest of Stonyford.
1529
Comment
UCR206690
Urtica urens
George K. Helmkamp, E. A. Helmkamp
2009-1-31
14324
Colusa
Sacramento Valley, along CA-20, 1.6 miles west of the Sacramento River at border with Sutter Co.
9
Comment
UC76664
Valerianella locusta
Peter Ossenbruggen
1905-1
Colusa
near Grimes (Sacramento Valley); Sacramento Valley
Comment
CAS-BOT-BC479711
Velezia rigida
Ann Howald
2003-5-29
2352
Colusa
Inner North Coast Ranges: Indian Valley, east side of East Park Reservoir, c. 3.7 mi N of Lodoga, near Chisolm Cove Group Campground
378
Comment
JEPS81319
Verbascum blattaria
L. R. Heckard and J. C. Hickman
1982-7-6
5934
Colusa
s side Snow Mt. (slope above and e of Summit Springs); s side Snow Mt., e of Summit Springs
1584
Comment
CHSC113036
Verbascum thapsus
Lowell Ahart
2013-10-1
19093
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
POM63857
Verbena lasiostachys
Roxana Stinchfield
1916-7-8
375
Colusa
Stinchfield Ranch, along Sycamore Slough
Comment
UCD169983
Verbena lasiostachys
G. F. Hrusa; Dmitri Geltman
1999-8-18
15250
Colusa
Goat Mtn. summit.
1706
Comment
CDA14291
Verbena lasiostachys var. lasiostachys
G. F. Hrusa
1998-6-19
14639
Colusa
North Coast Ranges; Where Candy Bucket Spring crosses Fouts Springs - Stonyford Rd. ~ 4.5 mi. E of Stonyford.
Comment
CHSC113134
Verbena lasiostachys var. scabrida
Lowell Ahart
2013-10-1
19091 A
Colusa
Inner North Coast Range. Strand of East Park Reservoir, about 2 1/2 miles (air) southeast of Stonyford, about 2 1/2 miles northwest of Lodoga, about 10 miles (air) northwest of Sites.
364
Comment
SEINET10743598
Verbena lasiostachys var. scabrida
Andrew Townesmith, Karen M. Meyer
2007-8-7
Townesmith 913
Colusa
Mendocino National Forest, Grindstone Ranger District. Lily Pond, off Forest Service road 17N02, 1.7 miles SW ofinteresection with Forest Service route M10. T17N R8W S24.
1264
Comment
UCR205142
Verbena litoralis
George K. Helmkamp, E. A. Helmkamp
2008-10-14
14247
Colusa
Sacramento Valley, along CA-20, 0.2 mile east of the Sutter County line
9
Comment
RSA794841
Veronica anagallis-aquatica
D. Isle
2008-4-17
1935
Colusa
5 miles north of Maxwell; south of Delevan Road; 0.6 miles west of I-5 Overpass; in irrigation ditch water on west side of 10 rice checks on Ruesser Moore property.
30
Comment
CHSC110846
Veronica catenata
David Isle
1989-5-14
1998
Colusa
Stony Creek Watershed. Pendell Ranch--2 miles W of CO. Rd. 306 Jct. w/Fouts Springs Road; In black adobe soil--150 yds south of Pendell home.
384
Comment
CHSC94481
Veronica catenata
Lowell Ahart
2006-8-9
13127
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
347
Comment
RSA725015
Veronica catenata
L. Ahart
2006-8-9
13127
Colusa
North side and under the bridge across Stony Creek, just north of Stonyford.
348
Comment
CHSC115625
Veronica catenata
D. Isle; Rhonda Isle
2014-9-27
2142
Colusa
Northern Sacramento Valley Foothills: W side East Park Resservoir, 0.3 mi S of boatlaunch, 100 yds E of normal lake edge in muddy clay soil. 10S-0541629E, 435525N.
354
Comment
JEPS16487
Veronica peregrina subsp. xalapensis
W. L. Jepson
1934-5-3
16599
Colusa
n of Colusa (Stegeman Station); Stegeman Station
Comment
UCD18840
Veronica peregrina subsp. xalapensis
Vernal Pool Team 2001; Carol Witham and Jennifer Buck
2001-4-30
147
Colusa
2 mi. south of the town of Colusa along Hwy 20, east of Hwy 20 and the Colusa Airport, Dolan Ranch site, pool # DOL001, UTMs: 10S0587786; 4336302.
Comment
UCD67078
Veronica peregrina subsp. xalapensis
Ellen Dean; G. Harrington, J. Alderson, E. Bayon, R. Willmarth
2008-6-8
5102
Colusa
BLM Payne Ranch, lands to the SW of jct of Hwys 16 and 20. Western edge of ranch on ridge above Cache Creek Canyon. Spring-fed stock pond at base of uphill climb east side of ridge trail.
510
Comment
JEPS80120
Veronica serpyllifolia subsp. humifusa
L. R. Heckard with J. Hickman
1980-7-1
5276
Colusa
10 mi w of Stonyford (Cirque between East and West Peaks of Snow Mountain); Snow Mountain
2042
Comment
UCD67034
Vicia americana
Ellen Dean; Davis Botanical Society
2008-5-31
5015
Colusa
west of I-5 at Maxwell, Goat Mountain, ridge below summit off of Goat Mountain Road.
1734
Comment
CHSC80384
Vicia benghalensis
Caroline Warren; Jenny Marr, Heidi West, Natalie Wight
1998-6-11
Colusa
Vicinity of Funks Creek and Logan Ridge.
106
Comment
UCR233295
Vicia villosa subsp. varia
George K. Helmkamp, E. A. Helmkamp
2011-4-1
17126
Colusa
Eastern Foothills North Coast Ranges, Antelope Valley, along Maxwell-Sites Road, 0.4 miles southeast of Sites
93
Comment
CHSC86014
Vicia villosa subsp. villosa
Jenny Marr; H. West, J. Lacey, C. Warren, N. Wight
1998-4-14
Colusa
Vicinity of Grapevine Creek, Antelope Valley, and Sites-Lodoga Road.
121
Comment
UC1761574
Viola adunca
Hoffman
1948-6-17
2618
Colusa
Upper Letts Valley
1310
Comment Read comments May 8 2018
UCD67122
Viola adunca subsp. adunca
Ellen Dean; Davis Botanical Society
2008-5-31
5054
Colusa
West of I-5 at Maxwell, north slope of Goat Mountain, along Letts Valley Rd. between Goat Mountain Summit and Fouts Springs, east side of road.
Comment
CHSC57529
Viola douglasii
Barbara Adams
1991-4-6
12
Colusa
Ca. 0.3 mi w of jct of Hwys 20 and 16, s side of Bear Creek, ca. 18 mi sw of Williams.
321
Comment
HSC21779
Viola douglasii
Charles Belshaw
1937-4-25
2820
Colusa
North Coast Ranges: Cooks Springs
Comment
JEPS15269
Viola douglasii
Rimo Bacigalupi with G. T. Robbins, G. L. Stebbins, C. McMillan, S. Galen Smith and Peter Kamb
1950-4-16
3115
Colusa
4 mi s of Ladoga (and 6 mi nnw of Leesville, along Little Indian Creek); Indian Valley, Little Indian Creek
396
Comment
JEPS50291
Viola douglasii
Alice King
1906-4-1
Colusa
College City
Comment
JEPS73518
Viola douglasii
L. R. Heckard
1972-7-10
3137
Colusa
between Foutch Camp and Trout Creek crossing; Snow Mountain
1889
Comment
RSA10951
Viola douglasii
Victor Duran
1933-4-2
3379
Colusa
Stonyford.
305
Comment
UCD67093
Viola douglasii
Ellen Dean; Davis Botanical Society
2008-5-31
5023
Colusa
West of I-5 at Maxwell, Goat Mountain, ridge below summit off of Goat Mountain Road.
1734
Comment
UCR261729
Viola douglasii
Ann Howald
2003-3-26
2291 B
Colusa
Inner North Coast Ranges, Indian Valley, East Park Reservoir, Catholic Point peninsula, near Coppermine Road, c. 0.2 mi northwest of intersection with East Ruby King Road
417
Comment
SEINET5728583
Viola douglasii
Gene R. Williams
1961-1
31
Colusa
Road to Bear Valley, 7.5 mi. N of jct. of State Hwys 16 and 20.
Comment
JEPS81336
Viola purpurea subsp. integrifolia
L. R. Heckard and J. C. Hickman
1982-7-6
5950
Colusa
s side of Snow Mountain, West Peak ridge Snow Mountain; , West Peak ridge
2103
Comment
HSC72215
Viola purpurea subsp. quercetorum
Thomas W. Nelson, Jane P. Nelson
1980-6-24
5873
Colusa
Colusa-Lake County line, along trail to Snow Mtn., 0.5 mi. from trailhead
1616
Comment
CAS-BOT-BC199948
Vulpia microstachys var. ciliata
T. C. Fuller
1958-5-27
3671
Colusa
S/Hwy 20, 1 mi. W/Jct. Hwy 16
Comment
UCD56660
Vulpia microstachys var. ciliata
Sam Bledsoe
2007-3-25
7
Colusa
BLM Payne Ranch. Destinella Flat area, just E of the Lake County border, ca. 3.4 road miles along Hwy 20 from the junction of Hwy 16 and Hwy 20. ca. 500 ft south of Hwy 20.
576
Comment
UCD82505
Vulpia microstachys var. ciliata
Craig Thomsen; G. Harrington
2009-5-12
2866
Colusa
Colusa County on Walker Ridge. Eaton Springs, about 1 mile east of Walker Ridge Rd.
710
Comment
UC766752
Vulpia microstachys var. confusa
R. F. Hoover
1938-4-23
3208
Colusa
Upper Sand Creek
Comment
CAS-BOT-BC183935
Vulpia microstachys var. microstachys
Roxana S. Ferris
1926-4-23
6577
Colusa
Stonyford
Comment
CDA33005
Vulpia microstachys var. pauciflora
T. C. Fuller
1958-5-27
Colusa
South of Highway 20, 1 mile west of junction with Highway 16.
0
Comment
RSA783321
Vulpia myuros
R. R. Halse
2011-3-20
8133
Colusa
Williams. By junction of 5th Street and B Street.
25
Comment
CAS-BOT-BC184669
Vulpia myuros subsp. megalura
Roxana S. Ferris
1917-4-12
494
Colusa
4 miles East of Williams
Comment
CHSC107944
Vulpia myuros var. myuros
B. Castro; Robin Carter, Jessica Boyt
2011-4-25
1850
Colusa
Sacramento Valley. Extreme west edge of Sacramento Valley; 5 air mi NW of Maxwell, 1 mi southeast of Funks Reservoir and 170 ft northeast of Tehama-Colusa Canal. Ca 0.15 mi S of large +- saline/alkaline wetland/ marsh, on dry grassy hillside just downslope from canal.
59
Comment
CHSC79968
Wyethia glabra
L. P. Janeway; B. Castro
2000-5-4
6708
Colusa
Vicinity of Grapevine Creek and Sites-Lodoga Road.
274
Comment
RSA589934
Wyethia glabra
Michael A. Vincent, Robert M. Rhode
1996-3-30
7271
Colusa
Along St Hwy 16, near mile marker 6/65, a little N of the Yolo Co. line; 6.65 mi S jct St Hwy 20.
Comment
UC36807
Xanthium spinosum
J. Burtt Davy
May, 1898
4277
Colusa
near Willows
Comment
CDA11418
Yabea microcarpa
G. F. Hrusa, K. van Katwyk
1995-4-22
12139
Colusa
Inner North Coast Ranges; S side of Leesville Rd. approx. 3 m. N of Hwy 20.
Comment
JEPS87670
Yabea microcarpa
Vernon H. Oswald and Lowell Ahart
1994-4-6
6063
Colusa
1.2 mi sw Digger Pine Flat (Goat Mtn Rd at Sullivan Creek, s of Stonyford); Sullivan Creek
469
Comment
CDA38554
Yabea microcarpa
Vernon H. Oswald & Lowell Ahart
1998-5-7
8993
Colusa
Bartlett Springs Road 1.6 miles west of Bear Valley Road.
Comment
CHSC89288
Zeltnera trichantha
G. F. Hrusa; Dmitri Geltman
1999-8-18
15243
Colusa
North Coast Ranges. Along Leesville Rd., +- 1 mi S of Lodoga. Creekbed.
320
Comment
UCD121476
Zeltnera trichantha
Vernon H. Oswald; Lowell Ahart
1998-7-15
9267 B
Colusa
Bartlett Springs Rd. 1.6 mi west of Bear Valley Rd.
487
Comment
RSA262383
Zigadenus fremontii
Rosalie B. Lopopolo
1967-4-29
34
Colusa
Ca. 8 miles northwest of junction of Highway 16 and Highway 20, Bear Valley
402
Comment