UCR
Carolyn Sanford 346 1977-04-23
United States, California, Lake, 0.4 mi north of State Route 20 on the Walker Ridge Road., 39.02811 -122.45322, 640m
UCR
Thomas W. Nelson 3928 1978-04-29
United States, California, Colusa, Along Bear Valley Road c. 2 mi from the junction w/ State Route 20., 39.02 -122.38, 366m
UCR
Ellen Dean 3663 2007-04-07
United States, California, Colusa, BLM Payne Ranch, Craig Canyon, west of Hwy 16, c. 2 road mi south of junction of Hwy 20 and Hwy 16. Along unimproved road, 38.98564 -122.36183, 329m
UCR
Ellen Dean 3672 2007-04-07
United States, California, 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, 38.98064 -122.37383, 366m
NY
3763126 D. W. McNeal 1303 1973-04-28
United States of America, California, Colusa Co., Beside Hwy. #20, just e. of the Colusa-Lake Co. line.
NY
3763124 D. W. McNeal 3068 1985-05-09
United States of America, California, Lake Co., On a bare slope above Walker Ridge Rd, 0,5 mi. n. of Hwy 20., 39.01742 -122.418177
NY
3763127 D. W. McNeal 2028 1977-05-18
United States of America, California, Colusa Co., On a hillside above a small stream beside Hwy. #20, 0.9 mi. w. of the jct. of Hwy. #16.
NY
3763125 A. A. Heller 15579 1940-05-06
United States of America, California, Colusa Co., In open places summit of the grade on State Highway #20, at the Lake County line., 232m
NY
3763128 D. W. McNeal 2318 1980-04-26
United States of America, California, Colusa Co., On an open slope above Bear Valley Rd, 1.4 mi, n. of its jct. with Hwy.#20.
BRY:V
BRYV0067767 D. W. McNeal 2028 1977-05-18
U.S.A., California, Colusa, On a hillside above a small stream beside Hwy. #20, 0.9 mi. w. of the jct. of Hwy. #16.
BRY:V
BRYV0067766 D. L. Goforth 23 1977-04-23
U.S.A., California, Lake, Wilbur Springs Quad. 0.4 miles north of State Route 20 on the Walker Ridge Rd., 640m
BRY:V
BRYV0067759 D. W. McNeal 3068 1985-05-09
U.S.A., California, Lake, Above Walker Ridge Rd, 0.5 mi. n. of Hwy. 20.
BRY:V
BRYV0067771 Thomas Nelson 3972 1978-04-30
U.S.A., California, Colusa, State Route 20 just east of Colusa-Lake county line., 549m
BRY:V
BRYV0067770 D. W. McNeal 2318 1980-04-26
U.S.A., California, Colusa, On an open slope above Bear Valley Rd, 1.4 mi. n. of its jct. with Hwy #20.
BRY:V
BRYV0067769 D. W. McNeal 2317 1980-04-26
U.S.A., California, Colusa, Above Bear Valley Rd. 0.7 mi. nw. of the jct. of Hwy #20.
PUA
48286 G.L. Clifton 1981-04-27
United States, California, Yolo, Local landmark: Little Blue Ridge. Knoxville Quad., 38.864278 -122.362528, 536m
PUA
48378 G.L. Clifton 1981-06-02
United States, California, Yolo, Local landmark: Little Blue Ridge. Knoxville Quad., 38.872333 -122.368889, 536m
PUA
65032 James Jokerst 1985-04-05
United States, California, Colusa, Local landmark: Coyote Peak. Wilbur Springs Quad., 39.048083 -122.431278, 457m
PUA
48272 G.L. Clifton 1981-05-26
United States, California, Yolo, Local landmark: Third Lake. Knoxville Quad., 38.849806 -122.342056, 512m
UT:Botany
UT0013921 D. W. Mcneal 3068 1985-05-09
USA, California, Lake, Moist, heavy serpentine soil on a bare slope above Walker Ridge Rd, 0.5 mi. n. of Hwy. 20. T 14 N, R 5 W, sec. 33. Fls. 1t. lavender
UT:Botany
UT0013920 D. W. McNeal 2317 1980-04-26
USA, California, Colusa, Slope above Bear Valley Rd, 0.7 mi NW of the Jct. of Hwy. 20.
UT:Botany
UT0013919 D. W. Mcneal 2028 1977-05-18
United States, California, Colusa, beside Hwy. #20, 019 mi. w. of the jct. of Hwy. #16.
DAV
DAV342639 G. L. Stebbins, Jr. 6026 1962-05-06
United States, California, Colusa, Colusa County: along Highway No. 20, Bear Creek, between Williams and Lower Lake, at Colusa-Lake County line., 39.01131 -122.40829
DAV
DAV358158 Craig D. Thomsen s.n. 2008-04-27
United States, California, Colusa, Colusa County: 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., 39.0032799913872 -122.367234249729, 452m
DAV
DAV342632 L. K. Mann s.n. 1958-05-03
United States, California, Colusa, Colusa County: about 0.8 mile toward Wilbur Springs from Junction of California Highway #16 and #20., 39.01225 -122.37293
DAV
DAV342630 L. K. Mann s.n. 1958-05-03
United States, California, Colusa, Colusa County: about 0.8 mile toward Wilbur Springs from Junction of California Highway #16 and #20., 39.01225 -122.37293
DAV
DAV342637 K. Esau s.n. 1934-05-05
United States, California, Colusa, Colusa County: Tahoe-Ukiah Highway, west of Williams., 39.10715 -122.30461
DAV
DAV342631 L. K. Mann s.n. 1958-05-03
United States, California, Colusa, Colusa County: California Highway #20 at Lake County - Colusa County Line., 39.01131 -122.40829
DAV
DAV358156 Craig Thomsen 2921 2009-05-14
United States, California, Colusa, Colusa County on Walker Ridge: southeast of Methany flat., 39.051822245923 -122.429924243496, 579m
DAV
DAV358159 Craig D. Thomsen 2536 2001-05-24
United States, California, Colusa, Colusa Co.: 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., 39.0127412838711 -122.377187217662, 325m
DAV
DAV358155 Joseph Schlottman 1 2010-05-02
United States, California, Lake, Lake County: Walker Ridge. Along Walker Ridge Road, ca. 0.5 road miles north of the intersection with Hwy 20. West side of the road where there is a turnaround and remnants of old road on saddle., 39.027778 -122.453889, 653m
DAV
DAV342636 Jake Ruygt 857 1980-04-22
United States, California, Napa, Napa County; 0.7 mile north of Knoxville on Berryessa-Knoxville Rd., 38.826944 -122.360833
DAV
DAV342638 Craig Thomsen 2761 2008-05-31
United States, California, Colusa, Colusa County: Payne Ranch (Bear Creek Ranch) BLM. About 1 mile south of Hwy 20 junction, vicinity of Cowboy Camp., 38.998056 -122.3575
DAV
DAV358160 Ellen Dean 3663 2007-04-07
United States, California, Colusa, Colusa Co.: 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., 38.985639 -122.361833, 329m
DAV
DAV342650 Craig D. Thomsen 2511 2001-05-24
United States, California, Colusa, Colusa Co.: Bear Creek Botanical Management Area. CalTrans right-of-way along Hwy 20 (south side), about 1 mile west of Hwy 20/16 intersection., 39.010833 -122.363611, 345m
DAV
DAV358161 Ellen Dean 3672 2007-04-07
United States, California, Colusa, Colusa Co.: 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., 38.980639 -122.373833, 366m
DAV
DAV358157 Gordon Harrington 33 2007-04-17
United States, California, Colusa, Colusa County: 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., 39.0029668015516 -122.403569522077, 527m
DAV
DAV342628 L. K. Mann s.n. 1958-05-03
United States, California, Colusa, Colusa - Lake County: California Highway #20 at county line., 39.01131 -122.40829
DAV
DAV342634 L. K. Mann s.n. 1958-05-03
United States, California, Colusa, Colusa - Lake County: California Highway #20 at county line., 39.01131 -122.40829
DAV
DAV342652 L. K. Mann s.n. 1963-05-15
United States, California, Colusa, Colusa County: Bear Valley Road (beyond sign to Wilbur Springs) past fenced area on right after leaving junction of California 16 and 20., 39.03345 -122.42649
DAV
DAV342629 L. K. Mann s.n. 1958-05-03
United States, California, Colusa, Colusa - Lake County: California Highway #20 at county line., 39.01131 -122.40829
USF
65316 P. H. Raven 17908 1962-05-31
United States, California, Colusa Co., CA 20; 2.5 mi. E of Lake County line., 39.1041 -122.265
SBBG
128800 Lowell Ahart, J. Dittes, J. Guardino 18641 2013-04-26
United States, California, Colusa, rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams, 39.0114 -122.4081, 567m
CalBG:RSA
Carolyn Sanford 346 1977-04-23
United States, California, Lake, 0.4 miles north of Route 20 on the Walker Ridge Road.; Wilbur Springs, 640m
CalBG:RSA
A. A. Heller s.n. 1942-05-29
United States, California, Colusa, 0.5 miles east of the Lake Co. Line
CalBG:RSA
A. A. Heller s.n. 1940-05-06
United States, California, Colusa, Summit of the grade on Hwy 20, at the Lake Co. line, 232m
CalBG:RSA
D. W. McNeal 3068 1985-05-09
United States, California, Lake, Above Walker Ridge Rd, 0.5 miles north of Hwy 20.
CalBG:RSA
Thomas W. Nelson 3928 1978-04-29
United States, California, Colusa, Along Bear Valley Rd. , 2 miles form jct with Hwy 20., 39.01745 -122.38915, 366m
CalBG:RSA
A. A. Heller s.n. 1937-06-00
United States, California, Colusa, Lake Landing
CalBG:RSA
David D. Keck 2398 1933-05-30
United States, California, Colusa, Colusa/Lake Co. Line west of Wilbur Springs
CalBG:RSA
Carl B. Wolf s.n. 1928-05-07
United States, California, Lake, 6 miles east of Houghs Mineral Springs on the road to Williams.
CalBG:RSA
Peter H. Raven 17908 1962-05-31
United States, California, Colusa, Highway 20, 2.5 miles east of Lake County Line
CalBG:RSA
S. Mashayekhi SM 033 2009-05-30
United States, California, Lake, Inner North Coast Ranges regions, 0.4 miles on Walker Ridge Road, north of Hwy 20, 39.028083 -122.452972, 384m
Harvard:GH
00357261 1883-06-00
United States of America, California, Colusa County, Wilber Springs
WS
299874 D.W. McNeal 1303 1973-04-28
United States, California, Colusa, Beside Highway 20, just east of the Colusa-Lake County line., 39.22722 -122.04028
WS
93546 Marion Ownbey s.n. 1947-06-07
United States, California, Colusa, Greenhouse or garden in Pullman, WA., 39.35944 -120.79806
WS
281713 Marion Ownbey s.n. 1947-06-07
United States, California, Colusa, Greenhouse or garden in Pullman, WA., 39.35944 -120.79806
WS
281716 Marion Ownbey s.n. 1952-06-09
United States, California, Lake-Colusa line, Greenhouse or garden in Pullman, WA., 39.35944 -120.79806
WS
281717 F.W. Hoffman 3775 1951-05-02
United States, California, Lake-Colusa line, Lake-Colusa county line on Williams-Ukiah Highway., 39.18333 -122.26667
WS
150339 A.A. Heller 15579 1940-05-06
United States, California, Lake, Summit of the grade on State Highway 20, at the Lake County line., 39.1 -122.78333
WS
292507 D.W. McNeal 2317 1980-04-26
United States, California, Colusa, Above Bear Valley Road, 0.7 miles northwest of the junction of Highway 20., 39.07639 -122.41528