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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
CHSC13792
Abies concolor
Anne Linda Brisk
1969-7-2
33
Lassen
Growing along the shore of Mohogany Lake.
Comment
JEPS94537
Acer glabrum var. torreyi
Vernon Oswald and Lowell Ahart
1997-6-24
8607
Lassen
0.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain, along Forest Road 29N43, 5.4 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43
1889
Comment
CAS-BOT-BC334175
Acer negundo var. californicum
J. T. Howell
1975-7-23
s.n.
Lassen
Susanville, in park
1295
Comment
SEINET10473515
Achillea lanulosa
Mary Susan Taylor
1974-1
Taylor 286
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
CHSC12493
Achillea millefolium
Carol Weld
1969-6-20
20
Lassen
Dean's Meadow.
1950
Comment
CHSC30558
Achillea millefolium
Sori H Shad
1970-6-26
13
Lassen
Dean's Meadow.
1524
Comment
CHSC5191
Achillea millefolium
J. B. Kimsey
1946-6-11
Lassen
Aspen Grove, Pine Creek, Eagle Lake, Lassen Co., California.
1580
Comment
UC1136758
Achillea millefolium
George A. Fischer and Irwin H. Johnson
1933-7-12
F 207
Lassen
Grass Valley
1700
Comment
CAS-BOT-BC260405
Achnatherum hymenoides
P. B. Kennedy
1901-6-10
s.n.
Lassen
Railroad Station, Constantia
Comment
UCD50374
Achnatherum hymenoides
P. B. Kennedy
1901-6-10
s.n.
Lassen
R.R. Station, Constantia, California. Lassen County.
Comment
SEINET249775
Achnatherum lemmonii
Beecher Crampton
1954-7-5
2054
Lassen
4.5 miles west of Susanville, along state highway 36.
1433
Comment
UC40031
Achnatherum lemmonii
M. S. Baker and Frank Nutting
1894-7-3
Lassen
Dixey Mts.
Comment
RSA129475
Achnatherum lemmonii var. lemmonii
G. A. Fischer
1933-7-14
252
Lassen
Lassen Forest
1768
Comment
CAS-BOT-BC216451
Achnatherum occidentale subsp. californicum
John Thomas Howell
1969-8-7
45884
Lassen
Butte Lake, Lassen Park
Comment
CHSC109530
Achnatherum occidentale subsp. californicum
B. Castro; L. P. Janeway
2003-10-5
1459
Lassen
High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail between Cone Lake and Triangle Lake, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A.
2103
Comment
UC1143047
Achnatherum occidentale subsp. californicum
L. R. Short and W. Gansberg
1936-6-2
S- 3666
Lassen
Burgess Spring Experimental Range Lassen National Forest
1858
Comment
UC506985
Achnatherum occidentale subsp. occidentale
George A. Fisher and Irwin H. Johnson
1933-7-12
F- 215
Lassen
Lassen Forest
1706
Comment
UC584331
Achnatherum occidentale subsp. occidentale
G. L. Stebbins Jr.
1937-7-11
2324
Lassen
1 mi below summit; Black Mt.
1940
Comment
CAS-BOT-BC218610
Achnatherum occidentale subsp. pubescens
John Thomas Howell
1976-7-19
51981
Lassen
Gold Run Creek southwest of Susanville, Sierra Nevada
1386
Comment
CAS-BOT-BC218614
Achnatherum occidentale subsp. pubescens
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49191
Lassen
Elysian Valley northwest of Janesville, Sierra Nevada
1325
Comment
UCD32668
Achnatherum occidentale subsp. pubescens
Beecher Crampton
1954-7-6
2069
Lassen
Lassen County, 1 mile east of Johnstonville, along US highway 1395.
1219
Comment
UCD51209
Achnatherum occidentale subsp. pubescens
Beecher Crampton
1954-7-5
2051
Lassen
Along Hwy. 36, 4.5 miles west of Susanville.
1432
Comment
SEINET201660
Achnatherum speciosum
A. Cronquist, AH Holmgren
1992-6-17
8467
Lassen
50 mi SE of Susanville
1372
Comment
RSA700231
Achnatherum thurberianum
L. P. Janeway
2001-6-20
7205
Lassen
High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain.
1402
Comment
SEINET229581
Achnatherum thurberianum
Gary Schoolcraft
1982-6-22
722
Lassen
North end of Fort Sage Mountains
Comment
SEINET235273
Achnatherum thurberianum
CSU Chico
Lassen
unspecified
Comment
UC584327
Achnatherum thurberianum
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-15
2355
Lassen
along highway from McArthur to Bieber; Big Valley Mt.
1100
Comment
UCD32656
Achnatherum thurberianum
Beecher Crampton
1954-7-5
2052
Lassen
Lassen County, 4.5 miles west of Susanville, along state highway 36.
1432
Comment
UCD51423
Achnatherum thurberianum
Beecher Crampton
1964-6-27
7091
Lassen
21 miles north of Susanville, north end of Eagle Lake, B.L.M. Bucks Bay allotment.
1676
Comment
UCD51444
Achnatherum thurberianum
R. Tofsrud
1947-7-1
223
Lassen
Between Ravendale and Thermos.
Comment
UCD51302
Achnatherum webberi
L. Whitney
1935-7-31
3587
Lassen
Ashurst Mt.
Comment
JEPS127283
Acmispon americanus var. americanus
Lowell Ahart, John Dittes
2016-7-13
21119
Lassen
30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
CHSC30612
Acmispon denticulatus
L. Maslin
1975-7-1
12
Lassen
On the road to Lower Dry L. from Eagle Lake Field Station, 2 mi. ELFS.
1524
Comment
CAS-BOT-BC412863
Aconogonon davisiae
Ray Hanson
1954-8-23
s.n.
Lassen
Lassen Park: near Jakey Lake
2112
Comment
CDA3517
Adonis aestivalis
T. C. Fuller
1963-6-1
10641
Lassen
East of Willow Springs Campground, in northeast Lassen Co., ca 15 miles southeast of Pittville.
0
Comment
CAS-BOT-BC383114
Agastache parvifolia
Andrew Townesmith; Karen M. Meyer
2007-7-22
847
Lassen
Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44
1971
Comment
CHSC65107
Agastache parvifolia
Vernon H. Oswald
1995-7-24
7132
Lassen
N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek.
1950
Comment
CHSC67060
Agastache parvifolia
Willis Ball
1969-6-25
27
Lassen
Found in Upper Murrer's Meadow.
1584
Comment
HSC63922
Agastache parvifolia
Teresa Prendusi
1980-7-1
Lassen
McCoy Flat, 4 mi. W of N tip of Eagle Lake- along side of road.
1646
Comment
UCR73167
Agoseris glauca
G. L. Webster
1989-5-13
7704
Lassen
2.5 mi. east of Beckworth Pass
1500
Comment
CHSC60711
Agoseris glauca var. glauca
Vernon H. Oswald; Lowell Ahart
1993-6-14
5530
Lassen
Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518,33N89).
1566
Comment
CHSC101022
Agoseris glauca var. laciniata
John Dittes
2008-5-22
1539
Lassen
Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace on northeast side of Willow Creek.
483
Comment
JEPS100463
Agoseris grandiflora
Dean W. Taylor
2001-6-28
17818
Lassen
Diamond Mountains, Crystal Peak, along ridgeline at the summit
2377
Comment
UC1924573
Agoseris heterophylla var. heterophylla
Debra Valov
2006-5-29
2006023
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1280
Comment
CAS-BOT-BC13231
Agoseris monticola
G. D. Hanna
1958-9-22
s.n.
Lassen
Road from Caribou Lake to Cone Lake
Comment
RSA299167
Agropyron desertorum
J. T. Howell
1974-7-8
50468
Lassen
Susanville
1296
Comment
UC1130661
Agrostis alba
H. S. Yates
1936-8-11
6060
Lassen
near Red Rock; Susanville Quad.
Comment
UC1142988
Agrostis exarata
A. L. Hormay
1941-6-25
21
Lassen
Burgess Spring Lassen Forest
1676
Comment
UCD52428
Agrostis exarata
L. Whitney
1933-8-2
2152
Lassen
Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest.
1920
Comment
UC1483834
Agrostis pallens
G. Schoolcraft
1980-7-28
330
Lassen
rocky meadow area e Tule Mountain (s of Blue Lake)
2042
Comment
CAS-BOT-BC138801
Agrostis scabra
John Thomas Howell
1959-9-23
34882
Lassen
Lassen Park. North end of Juniper Lake.
2057
Comment
CAS-BOT-BC138803
Agrostis scabra
John Thomas Howell; Gordon H. True
1973-8-1
50178
Lassen
Sierra Nevada. Gold Run Creek Road south of Susanville, Diamond Range.
1584
Comment
UC1024796
Agrostis scabra
Leo Whitney
1933-8-4
2228
Lassen
ca 10 mi nw Eagle Lake, n end; Lassen National Forest, Sheepshead
1889
Comment
SEINET10510581
Agrostis scabra
R. Ondricek
1978-8-4
Ondricek 114
Lassen
Near edge of Eagle Lake along grassy shoreline. T32N, R11E, se tip of Sec. 19, Antelope Mtn. Quadrangle,
1554
Comment
CAS-BOT-BC246539
Agrostis stolonifera
Leland S. Smith
1919-8-10
1132
Lassen
Modoc National Forest, Ash Valley - Templeton's Meadow
1463
Comment
SBBG115824
Agrostis variabilis
J. T. Howell, G. H. True
1973-8-1
50234
Lassen
Diamond Range, S of Susanville
Comment
SEINET7594432
Agrostis variabilis
George W. Gillett
1957-1
927
Lassen
Lassen Volcanic National Park, Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake. Dry wash 100 yards above trail junction.
1859
Comment
CAS-BOT-BC267065
Alisma gramineum
Malcom A. Nobs; S. Galen Smith
1949-7-22
1074
Lassen
Marshes along Willow Creek, Willow Creek Valley, 10 miles N of Susanville
Comment
JEPS121269
Alisma lanceolatum
Lowell Ahart
2013-7-22
18841
Lassen
W margin of duck field, about 80 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
UC985649
Alisma plantago-aquatica
Verne Grant and Irving Schneider
1947-9-6
8394
Lassen
near Wendel (w of Fleming Ranch Headquarters)
Comment
CHSC117531
Alisma triviale
Lowell Ahart; John Dittes
2016-7-13
21137
Lassen
South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
1289
Comment
SEINET8193719
Allium
M. J. Williams
1969-6-14
s.n.
Lassen
Ravendale.
1615
Comment
UC1776688
Allium acuminatum
G. Schoolcraft
1993-6-29
2307
Lassen
Ash Valley S of T intersection
1557
Comment
CAS-BOT-BC459568
Allium acuminatum
A. A. Heller
1938-6-23
15196
Lassen
2 miles east of Fredonyer Summit on Highway #36, in the Arid Transition Life Zone.
Comment
CAS-BOT-BC459570
Allium acuminatum
G. Schoolcraft
1989-5-31
1893
Lassen
Along Skedaddle Ranch Road near stateline, Susanville
1584
Comment
UC119964
Allium amplectens
T. S. Brandegee
1892-7-2
Lassen
Susanville
Comment
RSA367043
Allium amplectens
Anstruther Davidson
s.n.
Lassen
[No locality information provided]
Comment
CHSC7663
Allium anceps
Beverley J. Wise
1969-5-4
140
Lassen
23.4 mi. east of Susanville on Hwy 395.
1615
Comment
SD6424
Allium anceps
Mrs. R. M. Austin
1879-1
Lassen
No further location information given on label.
Comment
UC1133790
Allium campanulatum
A. Simontacchi
1940-7-1
935
Lassen
2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle
Comment
CAS-BOT-BC470924
Allium lemmonii
D. B. Dunn; B. J. Cox
1971-6-2
17786
Lassen
6 miles north of Hallelujah Junction on U.S. Hwy 395
1402
Comment
SEINET10532723
Allium lemmonii
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17786
Lassen
6 miles n of hallelujah jct. On u.s. Hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge & in sandy wash
1402
Comment
JEPS103209
Allium parvum
G. Schoolcraft
1993-4-27
2256
Lassen
Ash Valley RNA between Adin and Madeline, CA
1554
Comment
UCD138589
Allium parvum
Geo. C. Wood
1940-4-25
s.n.
Lassen
Coffin Ranch near Susanville.
Comment
CHSC68887
Allium platycaule
Vernon Oswald; Lowell Ahart
1997-6-24
8624
Lassen
South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43.
2164
Comment
CAS-BOT-BC474073
Allium platycaule
H. D. Ripley; R. C. Barneby
1943-6-14
5733
Lassen
Fredonyer Pass
1676
Comment
CAS-BOT-BC332746
Alopecurus
R. F. Thorne; Larry E. DeBuhr
1975-8-22
46987
Lassen
Along Hwy 395 ca 6 miles N of Madeline and 4.5 miles S of Modoc county line
1615
Comment
CHSC65366
Alopecurus aequalis
Vernon H. Oswald; Lowell Ahart
1995-8-14
7194
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittant stream, N of Susanville.
1676
Comment
HSC22949
Alopecurus aequalis
John Pratt
1970-6-21
35
Lassen
1707
Comment
SEINET7295647
Alopecurus aequalis
A. A. Beetle
1941-1
2795
Lassen
10 miles west of Chester, rte 36
Comment
UCD55848
Alopecurus aequalis
L. Whitney
1933-8-4
s.n.
Lassen
8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest.
1889
Comment
RSA772750
Alopecurus aequalis var. aequalis
R. F. Thorne, Larry E. DeBuhr
1975-8-22
47211
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line
1616
Comment
CHSC112469
Alopecurus carolinianus
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18731
Lassen
About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CDA43006
Alopecurus geniculatus
L. Ahart, John Dittes
2008-6-2
14960
Lassen
About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment Read comments Oct 5 2019
JEPS114770
Alopecurus geniculatus
Lowell Ahart, John Dittes
2008-6-20
14960
Lassen
About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
UCD55918
Alopecurus saccatus
P. B. Kennedy
1927-6-13
s.n.
Lassen
Pit River.
Comment
CHSC63387
Alyssum desertorum
Vernon H. Oswald; Beth Corbin, Michael Dolan
1994-6-18
6310
Lassen
Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. On the edge of the road.
1767
Comment
CHSC68738
Alyssum minus subsp. micranthum
Vernon H. Oswald; Lowell Ahart
1997-5-27
8496
Lassen
North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of a creek paralleling the road.
1546
Comment
CHSC106172
Amaranthus blitoides
Lowell Ahart; John Dittes
2010-8-30
17090
Lassen
North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley.
1274
Comment
CDA23690
Amaranthus blitoides
T. C. Fuller
1971-7-13
19898
Lassen
North base of Skeedaddle Mountain.
0
Comment
CHSC116090
Amaranthus californicus
Lowell Ahart; John Dittes
2015-7-13
20317
Lassen
About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
JEPS41028
Ambrosia acanthicarpa
W. L. Jepson
1939-8-11
19379
Lassen
Milford
1280
Comment
SJSU13939
Ambrosia acanthicarpa
N. A. Hopkins
1986-8-28
1378
Lassen
by County Road 33 (Scott Road), lower Long Valley, N of Highway 70 & E of Beckwourth Pass
Comment
SEINET6190435
Amelanchier alnifolia var. semiintegrifolia
C. Gulling
1905-1
s.n.
Lassen
Big Meadows
Comment
POM253370
Amelanchier pallida
A. A. Heller
1938-6-4
15144
Lassen
1 mile east of Fredonyer Pass on hwy 36.
1707
Comment
UCR139398
Amelanchier utahensis
P. A. Munz
1947-5-20
11886
Lassen
Eastern Sierra Nevada Mtns., Laufman Forestry Public Camp Ground, above Milford
1524
Comment
CHSC76307
Amphiscirpus nevadensis
Lowell Ahart; Vernon H. Oswald
1999-9-13
8228
Lassen
Along a small slough, on the south side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish.
1210
Comment
SEINET9183301
Amphiscirpus nevadensis
R. R. Halse
2010-8-25
8087
Lassen
Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake.
1559
Comment
CHSC91309
Amsinckia menziesii
Lowell Ahart; John Dittes
2005-6-1
11899
Lassen
Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
Comment
SEINET12492784
Amsinckia tessellata
F. B. Headley
1915-5-28
s.n.
Lassen
Honey Lake.
Comment
SEINET10939652
Amsinckia tessellata
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 2574
Lassen
3 mi S of Hallelujah Jct, on US Hwy 395, Jct of US 395 & CA 70; along roadside and in Artemesia-grassland field.
Comment
UCD72518
Amsinckia tessellata
Joe DiTomaso
2008-5-15
s. n.
Lassen
Modoc Plateau, just inside California (from Nevada) on Smoke Creek Road near Ravendale.
Comment
CAS-BOT-BC45258
Ancistrocarphus filagineus
H. D. Ripley; R. C. Barneby
1944-5-30
5862
Lassen
North of Viewland
137
Comment
CHSC12433
Antennaria
Robert Severin
1969-6-26
22
Lassen
Papoose Meadow, 4 mi s of E.L.B.S.; 1/4 mi n of Cow Camp.
1630
Comment
CAS-BOT-BC63953
Antennaria argentea
Clare B. Hardham
1969-8-28
17453 C.
Lassen
West of Janesville
Comment
CHSC23527
Antennaria argentea
Wayne O. Baum
1971-7-12
71 -54
Lassen
E. slope of Gallatin Peak.
1950
Comment
UC1125575
Antennaria argentea
A. Simontacchi
1940-6-23
886
Lassen
3.2 mi sw Schoonamaker Lake; Halls Flat Quad.
1920
Comment
UC891493
Antennaria argentea
C. L. Hitchcock
1940-5-26
6616
Lassen
ca 12 mi n of, at lava beds Fall River Mills (Shasta Co.); Fall River
1371
Comment
CAS-BOT-BC63875
Antennaria argentea
C. L. Hitchcock
1940-5-26
6616
Lassen
Ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River
1371
Comment
CAS-BOT-BC59220
Antennaria dimorpha
James Jokerst
1983-5-31
1792
Lassen
Grasshopper Valley Quad. Near Madeline Plains
1583
Comment
CHSC54170
Antennaria dimorpha
Vernon H. Oswald
1991-5-28
4624
Lassen
Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber.
1264
Comment
CHSC60808
Antennaria geyeri
Vernon H. Oswald; Lowell Ahart
1993-6-28
5584
Lassen
Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.
1731
Comment
CHSC60809
Antennaria geyeri
Vernon H. Oswald; Lowell Ahart
1993-6-28
5614 .1
Lassen
N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake.
1798
Comment
JEPS117487
Antennaria geyeri
Lowell Ahart, John Dittes
2010-7-31
16974
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1520
Comment
JEPS94559
Antennaria geyeri
Vernon Oswald and Lowell Ahart
1997-6-24
8591
Lassen
s of Susanville (on n side of Diamond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43
1685
Comment
JEPS107290
Antennaria luzuloides
Lowell Ahart, John Dittes
2005-6-1
11862
Lassen
On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction
1448
Comment
UC1523734
Antennaria luzuloides
Gary Schoolcraft
1981-7-8
498
Lassen
s of Coulthurst Flat
1920
Comment
UC1609101
Antennaria luzuloides
Vernon H. Oswald and Lowell Ahart
1993-6-14
5527
Lassen
Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake
1566
Comment
CHSC54171
Antennaria luzuloides subsp. luzuloides
Vernon H. Oswald
1991-5-28
4625
Lassen
Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber.
1264
Comment
POM39272
Antennaria rosea
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt. Susanville. Perkin's Ranch.
2226
Comment
UC1523723
Antennaria rosea
Gary Schoolcraft
1982-8-10
865
Lassen
se of, along Hwy 139 Adin
1584
Comment
UC1583976
Antennaria rosea
G. Schoolcraft
1990-7-2
2103
Lassen
w of Cold Spring Mtn.
1645
Comment
CHSC60304
Antennaria rosea subsp. confinis
Mary Ann Showers
1992-6-13
2558
Lassen
Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake.
2072
Comment
CHSC60714
Antennaria rosea subsp. rosea
Vernon H. Oswald; Lowell Ahart
1993-6-14
5506
Lassen
Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. .
1728
Comment
HSC28853
Antennaria rosea subsp. rosea
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19180
Lassen
Harvey Valley near Cone Springs
Comment
CHSC99146
Apera interrupta
Lowell Ahart; John Dittes
2008-6-19
14868
Lassen
About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber.
1578
Comment
JEPS114859
Apera interrupta
Lowell Ahart, John Dittes
2008-6-19
14868
Lassen
About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber
1578
Comment
UC1035982
Apocynum androsaemifolium
Helen K. Sharsmith
1955-6-27
4516
Lassen
adjacent to Hwy. 89 n. of Hat Creek Ranger Station; Lassen Nat'l Forest
1158
Comment
JEPS95872
Apocynum cannabinum
Vernon H. Oswald and L. Ahart
1999-6-9
9739
Lassen
Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395: T31N R15E NE1/4 Sect. 3, 4450 ft elevation, sagebrush scrub, volcanic rock substrate
1356
Comment
CAS-BOT-BC392212
Aquilegia formosa
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mt. Susanville, Perkin's Ranch
2133
Comment
CHSC6240
Aquilegia formosa
M. West
1946-6-17
Lassen
Aspen Grove on Mt. Fredonyer
2133
Comment
UC773880
Aquilegia formosa
L. R. Short
1936-6-26
S- 407
Lassen
Lassen National Forest, Burgess Spr. Exp. Range
1837
Comment
CHSC4814
Aquilegia formosa var. truncata
R. Carter
1967-7-29
573
Lassen
Found in Murrer's meadow, W side where canal runs.
1584
Comment
SEINET10866232
Arabis
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2601
Lassen
Hallelujah jct intersection of u.s. 395 And state hwy 70; in open waste area adjacent to artemisia tridentata comm.
1433
Comment
CHSC29891
Arabis holboellii var. retrofracta
Robin L. Ondricek
1978-5-25
29
Lassen
.4 mi N of Lake Forest Development on Co. Rd. A1.
1828
Comment
POM316895
Arabis rectissima
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain. Susanville. Perkin s Ranch.
1829
Comment
NY119422
Arabis rectissima
R. C. Rollins
1983-7-5
83227
Lassen
2 miles S of Eagle Lake Summit
Comment
NY119565
Arabis sparsiflora
H. D. D. Ripley
1944-5-29
5948
Lassen
South of Constantia
1447.8
Comment
SEINET1912095
Arceuthobium abietinum
R. L. Mathiasen
2010-1
1062
Lassen
3.8 km N of jct. of Routes 89 and 36 on Rte. 89. Ca. 3 km S of S entrance to Lassen Nat. Park
1900
Comment
CAS-BOT-BC409988
Arceuthobium campylopodum
Louella Bass
1973-5-29
EU 48
Lassen
Elysian Valley
1325
Comment
UC1584019
Arceuthobium campylopodum
G. Schoolcraft
1990-8-1
2120
Lassen
betw Cleghorn and Heath Reservoirs
1828
Comment
POM339728
Arctostaphylos manzanita subsp. manzanita
F. R. Fosberg
1969-8-16
51425
Lassen
(California Registered Historical Landmark 678) 10 mi. west of Susanville.
Comment
RSA38477
Arctostaphylos manzanita subsp. manzanita
P. A. Munz
1947-5-18
11865
Lassen
Fredonyer Forestry Public Camp Ground, west of Susanville.
1509
Comment
CAS-BOT-BC45896
Arctostaphylos nevadensis
A. H. Kramer
1929-1-1
s.n
Lassen
Prospect Peak
Comment
CAS-BOT-BC45898
Arctostaphylos nevadensis
A. H. Kramer
1930-7-1
s.n
Lassen
Prospect Peak, Lassen National Park
Comment
CAS-BOT-BC45900
Arctostaphylos nevadensis
A. H. Kramer
1930-6-9
s.n
Lassen
Prospect Pk, Lassen National Park
Comment
CAS-BOT-BC45907
Arctostaphylos nevadensis
Bill Wilson
1967-7-14
205
Lassen
Silver Lake, 20 mi. NW of Susanville
1889
Comment
CHSC5245
Arctostaphylos nevadensis
M. West
1946-7-12
Lassen
Eagle Lake. Silver Lake.
1981
Comment
RSA46474
Arctostaphylos nevadensis
Doris K. Kildale
1926-9-11
2764
Lassen
Juniper Lake.
2055
Comment
CAS-BOT-BC45894
Arctostaphylos nevadensis
Clare B. Hardham
1971-8-22
18386
Lassen
North slopes
2133
Comment
UC82992
Arctostaphylos patula
T. S. Brandegee
1892-7-26
Lassen
Milford
Comment
SEINET10537551
Arenaria aculeata
Mary Susan Taylor
1982-8-27
Taylor 5056 A
Lassen
T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft.
Comment
UC506974
Arenaria congesta var. congesta
George A. Fischer, Irwin H. Johnson
1933-7-12
f 223
Lassen
Lassen Forest
1728
Comment
RSA152609
Argemone munita subsp. rotundata
I. L. Wiggins, Dorothy B. Wiggins
1961-6-11
16352
Lassen
4.5 mi. e of Susanville
Comment
JEPS35887
Arnica chamissonis
Brown and Wieslander
1922-7-30
26
Lassen
Martin Springs , Eagle Lake
Comment
UC1136826
Arnica chamissonis
George A. Fischer and Irwin H. Johnson
1933-7-12
F 184
Lassen
(Dry Lake) Grass Valley Grass Valley, Thompson Meadow
1694
Comment
UC1533139
Arnica chamissonis
Gary Schoolcraft
1986-8-19
1667
Lassen
Said Valley Res.
1630
Comment
CHSC99739
Arnica chamissonis subsp. foliosa
Lowell Ahart; John Dittes
2008-6-20
14902
Lassen
In a wet meadow, about 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber.
1263
Comment
UC2027205
Arnica dealbata
Anthony Baniaga
2011-8-4
489
Lassen
Lassen National Forest. About 1/2 mile WNW of Griffith Hill, ca 30 ft N of 30N21. Swain Mountain quadrangle
Comment
CHSC66715
Arnica mollis
Vernon H. Oswald; Lowell Ahart
1996-8-1
8123
Lassen
Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood.
1737
Comment
JEPS35883
Arnica mollis
Frances D. Payne
1929-7-12
99
Lassen
Upper Silver Creek, se extremity of Warner Mts Warner Mountains, Upper Silver Creek
2499
Comment
CAS-BOT-BC85030
Arnica sororia
E. B. Babcock; G. L. Stebbins
1936-6-8
1788
Lassen
Gentle north facing slope of hillside, 2 miles north of Madeline.
1371
Comment
JEPS103219
Arnica sororia
G. Schoolcraft
1993-6-19
2298
Lassen
Ash Valley RNA between Adin and Madeline, CA.
1600
Comment
UC1136977
Artemisia arbuscula subsp. arbuscula
L. R. Short
1936-9-30
S- 506
Lassen
Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range
1746
Comment
UC747143
Artemisia arbuscula subsp. arbuscula
G. Thomas Robbins
1945-10-18
2156
Lassen
Harvey Valley Lassen National Forest, Harvey Valley
1676
Comment
CHSC118471
Artemisia arbuscula subsp. thermopola
Don Leply
2016-7-31
Lassen
Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile northeast of railroad crossing on Highway 44. 40N31:46.7 x 121W01:35.9.
1743
Comment
RSA233757
Artemisia biennis
R. F. Thorne, C. W. Tilforth
1969-9-6
39254
Lassen
Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford
1311
Comment
UC1119577
Artemisia cana subsp. bolanderi
A. Simontacchi
1940-9-16
948
Lassen
1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle
Comment
UCD159580
Artemisia douglasiana
D. S. Park
2011-8-24
317
Lassen
East of Westwood. Near Goodrich Creek.
319
Comment
CHSC77187
Artemisia dracunculus
G. Schoolcraft
1992-8-11
2248
Lassen
Near inters. of Wingfiled and Bass Hill Roads.
1322
Comment
CAS-BOT-BC93741
Artemisia ludoviciana subsp. incompta
Clare B. Hardham
1969-8-28
17463
Lassen
Sierra Nevada - slope west of Janesville
Comment
CAS-BOT-BC90766
Artemisia ludoviciana subsp. ludoviciana
G. H. True
1937-7-10
783
Lassen
Bull Flat (n. of Honey Lake)
Comment
CHSC30627
Artemisia tridentata
M. A. Dubin
1975-7-20
8
Lassen
Eagle Lake Field Station by Turkey Roll Hill.
1569
Comment
CAS-BOT-BC97324
Artemisia tridentata subsp. tridentata
Margaret Williams; Steven Williams
1974-7-26
74 -L-4
Lassen
area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70
1493
Comment
CAS-BOT-BC97326
Artemisia tridentata subsp. tridentata
Clare B. Hardham
1971-8-22
18395
Lassen
Diamond Mountain
2346
Comment
CAS-BOT-BC97328
Artemisia tridentata subsp. tridentata
L. S. Smith
1918-8-11
1026
Lassen
Modoc National Forest, Camp One
2529
Comment
RSA0092309
Artemisia tridentata subsp. tridentata
Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre
2013-7-12
31432
Lassen
Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville.
1732
Comment
RSA758317
Artemisia tridentata subsp. tridentata
Doug Goldman
2004-11-5
2935
Lassen
To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake
1256
Comment
CHSC115816
Asclepias fascicularis
Lowell Ahart; John Dittes
2015-7-14
20325
Lassen
On the edge of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1269
Comment
SEINET178457
Asclepias fascicularis
Unknown
1897-6-25
Lassen
Susanville
1341
Comment
UC1037219
Asclepias fascicularis
Leo Whitney
1933-8-10
1580
Lassen
near Hall's Flat (ca. 25 mi w of upper end of Eagle Lake); Lassen National Forest
1737
Comment
JEPS124872
Asclepias speciosa
Lynne C. Carter
1967-7-11
81
Lassen
1.1 mi. South of Millford on Hwy 395. West of Honey Lake.
Comment
CHSC25906
Astragalus
K. R. Stern
1967-7-1
2468
Lassen
Roadside, Murrer Ranch, ca. 17 mi. NE of Susanville.
Comment
POM204051
Astragalus accidens var. hendersonii
J. T. Howell
1934-6-10
11875
Lassen
Janesville
Comment
NY791371
Astragalus andersonii
D. B. Dunn
1971-6-2
17802
Lassen
6 miles north of Hallelujah Jct. on U.S. Highway 395
1402.1
Comment
HSC61704
Astragalus anxius
Thomas W. Nelson, Jane P. Nelson
1980-7-6
5988
Lassen
In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin.
Comment
CAS-BOT-BC178762
Astragalus canadensis var. brevidens
John Thomas Howell
1934-7-8
12504
Lassen
Spalding's, Eagle Lake
Comment
NY674058
Astragalus canadensis var. brevidens
G. Schoolcraft
1988-7-7
1821
Lassen
Madeline Plains north of Observation Peak and Horne Ranch Road
1646
Comment
UC1553369
Astragalus canadensis var. brevidens
Gary Schoolcraft
1988-7-7
1821
Lassen
Madeline Plains n of Observation Peak and Horne Ranch Rd.; Madeline Plains n of Observation Peak
1645
Comment
HSC69613
Astragalus curvicarpus
Gary Schoolcraft
1979-6-19
77
Lassen
Just N of West Painter Flat Rd. intersection.
1720
Comment
RSA111043
Astragalus curvicarpus
H. D. Ripley, R. C. Barneby, F. C. Ripley Jr.
1943-6-15
5752
Lassen
NE of Litchfield.
1234
Comment
SEINET5325001
Astragalus curvicarpus
M. J. Williams, J. T. Howell
1973-5-12
73 C-16
Lassen
Near Herlong turn-off, Hwy. 395.
1250
Comment
CAS-BOT-BC177845
Astragalus curvicarpus var. curvicarpus
Alice Eastwood; John Thomas Howell
1940-6-16
8336
Lassen
Near Susanville
Comment
NY803539
Astragalus curvicarpus var. curvicarpus
N. H. Holmgren
1980-7-4
9504
Lassen
Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale
1890
Comment
UC372641
Astragalus curvicarpus var. curvicarpus
Marcus E. Jones, A. M.
1897-6-24
Lassen
10 to 15 mi w from Amedee; w from Amedee
1219
Comment
RSA59356
Astragalus curvicarpus var. curvicarpus
E. K. Balls
1950-5-21
14825
Lassen
Near Standish, Hwy 395, 7 miles from jct of Hwy 36 and 395.
1250
Comment
SEINET5325006
Astragalus curvicarpus var. curvicarpus
G. Schoolcraft
1993-6-10
2286
Lassen
Along US Highway 395 near road to Clark Ranch.
1280
Comment
UC13367
Astragalus filipes
M. S. Baker and Frank Nutting
1894-6-20
Lassen
Big Valley
Comment
RSA415413
Astragalus gibbsii
Rockwell
1925-7-1
s.n.
Lassen
Eagle Lake
Comment
UC1128797
Astragalus gibbsii
E. Sawyer
1935-6-27
234
Lassen
Long Valley Sierraville Quad., Long Valley
Comment
CDA26675
Astragalus gibbsii
Taylor
Jun 1938
Lassen
Susanville.
0
Comment
NY674272
Astragalus gibbsii
J. T. Howell
1974-7-10
50515
Lassen
Sagebrush flat at the cemetery, Janesville
1295
Comment
SD43503
Astragalus gibbsii
Philip A. Munz
1947-5-20
11889
Lassen
Milford, dry silty flats
1260
Comment
RSA110067
Astragalus gilensis
H. D. Ripley, R. C. Barneby
1944-5-29
5951
Lassen
Container
1372
Comment
CAS-BOT-BC186911
Astragalus inversus
Leo Whitney
1935-7-21
1931
Lassen
Near Harvey Valley Spring, Lassen N.F.
1737
Comment
CAS-BOT-BC186913
Astragalus inversus
H. D. Ripley; R. C. Barneby
1943-6-14
5749
Lassen
W. of Susanville
1310
Comment
POM180437
Astragalus inversus
T. S. Brandegee
1892-7-1
s.n.
Lassen
Susanville
Comment
RSA111016
Astragalus inversus
H. D. Ripley, R. C. Barneby
1943-6-14
5749
Lassen
West of Susanville
1311
Comment
CAS-BOT-BC186943
Astragalus iodanthus
Arnold Tiehm
1980-5-29
5755
Lassen
North end of Honey Lake Valley, 2 air miles NW of Wendel
1231
Comment
POM23660
Astragalus iodanthus
Jos. Burtt Davy
s.n.
Lassen
Amadee
Comment
CAS-BOT-BC229047
Astragalus lemmonii
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1615
Comment
UCD35735
Astragalus lentiginosus
Beecher Crampton
1960-6-20
5738
Lassen
Harvey Valley, 6 miles north of Bogard Ranger Station.
1676
Comment
RSA109609
Astragalus lentiginosus var. chartaceus
H. D. Ripley, R. C. Barneby
1943-6-14
5744
Lassen
West of Susanville
1311
Comment
JEPS118160
Astragalus lentiginosus var. floribundus
Dean W. Taylor
2009-5-20
20605
Lassen
Widow Valley; Big Valley Mountains, logging road ca. 1 air mi NW of Brown Cabin (USGS map, site)
1478
Comment
NY675579
Astragalus lentiginosus var. floribundus
A. Tiehm
1980-5-29
5751
Lassen
North end of Honey Lake Valley, 1 mile north of Wendel
1231
Comment
POM25710
Astragalus lentiginosus var. floribundus
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat.
1616
Comment
UC1537105
Astragalus lentiginosus var. floribundus
Gordon H. True Jr.
1938-7-8
903
Lassen
n Hot Spring Mountain (Mud Flat); n of Hot Spring Mountains, Mud Flat
1371
Comment
JEPS114628
Astragalus lentiginosus var. lentiginosus
Lowell Ahart, John Dittes
2008-6-22
15046
Lassen
Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber
1268
Comment
POM26417
Astragalus lentiginosus var. lentiginosus
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat. [also Chats, a former settlement]
1524
Comment Read comments Mar 6 2011
UC13403
Astragalus lentiginosus var. lentiginosus
M. S. Baker and Frank Nutting
1894-7-5
Lassen
Dixey Valley
Comment
CHSC99122
Astragalus lentiginosus var. salinus
Lowell Ahart; John Dittes
2008-6-19
14889
Lassen
Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber.
1578
Comment
POM280735
Astragalus lentiginosus var. salinus
Alice Eastwood, John T. Howell
1940-6-16
8335
Lassen
Near Susanville.
Comment
NY676224
Astragalus malacus
B. M. Bartholomew
1993-5-13
6551
Lassen
Just south of Ravendale
1580
Comment
SD107330
Astragalus malacus
Christopher Davidson
1975-6-7
2748
Lassen
1 mile east of Beckwourth Pass on Hwy 70, high steppe or rolling grassland, unfenced on south side of road, in dry channel at lower end of gentle slope
1524
Comment
UCD55300
Astragalus malacus
Ellen Dean; Gary Schoolcraft
2006-5-16
3121
Lassen
East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields.
1251
Comment
JEPS54791
Astragalus pulsiferae
J. B. Davy
June 1897
Lassen
Chat Long Valley, Chat
Comment
SEINET4853425
Astragalus pulsiferae var. coronensis
Unknown
2001-6-14
28158
Lassen
E of Hwy 395, rd to Rams Horn Spring campground.
1540
Comment
JEPS107291
Astragalus pulsiferae var. pulsiferae
Lowell Ahart, John Dittes
2005-6-1
11871
Lassen
On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction
1448
Comment
NY694125
Astragalus pulsiferae var. pulsiferae
H. D. D. Ripley
1943-6-7
5499
Lassen
East side of Beckworth Pass, south Lassen Co.
1494
Comment
SEINET10452237
Astragalus purshii
Mary Susan Taylor
1974-1
Taylor 257
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
SEINET6654255
Astragalus purshii var. lagopinus
Stanley L. Welsh, N. Duane Atwood
2001-6-14
28157
Lassen
E of Hwy 395, rd to Rams Horn Spring campground.; 0
1539
Comment
CHSC48504
Astragalus purshii var. purshii
Vernon Oswald
1986-5-28
2052
Lassen
Rd. 201 on the west side of Eagle Lake, 22.1 mi n of Hwy 36, 9.2 mi n of Gallatin Beach Road.
1615
Comment
CHSC60739
Astragalus purshii var. purshii
Vernon H. Oswald; Lowell Ahart
1993-6-14
5520
Lassen
Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89).
1566
Comment
UC1137765
Astragalus purshii var. tinctus
August L. Hormay
1934-5-9
Lassen
Lassen National Forest , Black's Mt Headquarters (Black's Mt. Headquarters)
1706
Comment
UC1299224
Astragalus purshii var. tinctus
Freed W. Hoffman
1946-6-8
913
Lassen
Highway 395 Dry Creek (Dry Creek)
Comment
RSA339987
Astragalus whitneyi
Noel Holmgren
1980-7-4
9514
Lassen
Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale.
2195
Comment
UC584308
Astragalus whitneyi
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-9
2275
Lassen
sw Diamond Mt. (s of Susanville); sw of Diamond Mt., s of Susanville
2164
Comment
SEINET10490007
Astragalus whitneyi var. confusus
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17770
Lassen
Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc.
1372
Comment
CAS-BOT-BC200876
Astragalus whitneyi var. lenophyllus
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susnaville. Perkin's Ranch
2225
Comment
JEPS108557
Astragalus whitneyi var. siskiyouensis
L. P. Janeway
2005-7-4
8469
Lassen
High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41
1752
Comment
NY701850
Astragalus whitneyi var. siskiyouensis
B. J. Ertter
1987-6-16
7183
Lassen
Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM
2134
Comment
SEINET3025898
Astragalus whitneyi var. sonneanus
Marcus E. Jones
1897-6-28
Lassen
Top of Diamond Peak, Susanville. Perkin's Ranch.
2230
Comment
CAS-BOT-BC17410
Athysanus pusillus
Doris Kildale Gillespie
1930-5-12
9342
Lassen
2 miles north of Susanville on road to Alturas.
Comment
CHSC64780
Atriplex argentea var. hillmanii
Vernon H. Oswald
1995-6-7
6842
Lassen
Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road near milepost 19.5 just e of Skedaddle Creek, e of Wendel, ne of Susanville.
1231
Comment
CHSC76091
Atriplex argentea var. mohavensis
Lowell Ahart; Vernon Oswald
1999-9-13
8207
Lassen
On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish.
1207
Comment
SEINET5344853
Atriplex canescens
S. Massed, Jared Jaggers, D. Mathews
2011-10-24
Seeds of Success. NV 030 . Carson
Lassen
Northeast of Doyle. On the Northern slopes of Fort Sage Mountains.
1291
Comment
CHSC109990
Atriplex canescens var. canescens
L. P. Janeway; B. Castro
2012-7-2
10920 B
Lassen
Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel.
1241
Comment
JEPS120466
Atriplex canescens var. canescens
L. P. Janeway, B. Castro
2012-7-2
10920 A
Lassen
Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel.
Comment
RSA3150
Atriplex confertifolia
C. B. Wolf
1931-9-5
1278 -1279
Lassen
Honey Lake Valley, 1/2 mile from Amedee R.R. Station on road to Doyle.
Comment
UC768839
Atriplex gardneri var. falcata
R. F. Hoover
1940-10-5
4677
Lassen
alkali plain s Secret Valley; s of Secret Valley
Comment
UCR244045
Atriplex gardneri var. falcata
Jim Andre
1993-6-1
19715
Lassen
Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel
1218
Comment
UC88459
Balsamorhiza
T. S. Brandegee
1892-6-30
Lassen
Susanville
Comment
POM35967
Balsamorhiza deltoidea
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CHSC68609
Balsamorhiza hirsuta
Vernon H. Oswald; Lowell Ahart
1997-5-7
8402
Lassen
Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line.
1420
Comment
CAS-BOT-BC106489
Balsamorhiza hookeri
David D. Keck; J. Clausen
1935-6-24
3747
Lassen
2 mi. S. of Ravendale, in light sandy clay soil with some rock.
1463
Comment
CAS-BOT-BC106494
Balsamorhiza hookeri
Clarence Quick
1963-7-12
63 -38
Lassen
Blacks Mountain Experimental Forest east of Halls Flat
1859
Comment
CAS-BOT-BC106497
Balsamorhiza hookeri
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49167
Lassen
In open yellow pine forest, Elysian Valley northwest of Janesville - Sierra Nevada
1325
Comment
CHSC7646
Balsamorhiza hookeri
Beverly J. Wise
1969-4-17
14
Lassen
1 mi north on Hwy 139.
1341
Comment
UC1035988
Balsamorhiza hookeri
Helen K. Sharsmith
1955-6-22
4501
Lassen
5 miles beyond Blue Lake on road to Likely. Warner Mountains, Modoc National Forest
Comment
JEPS103175
Balsamorhiza hookeri
G. Schoolcraft
2000-4-26
2891
Lassen
1.8 miles W of Highway 395 on Shaffer Mountain Road
1554
Comment
UC1137703
Balsamorhiza sagittata
A. Simontacchi
1940-6-4
802
Lassen
7.0 mi sw of Jacks Lake (Halls Flat); Halls Flat
1828
Comment
CHSC114353
Balsamorhiza sagittata
B. Villegas
2011-5-20
Lassen
Susanville.
Comment
CHSC5234
Barbarea orthoceras
A. Santos
1946-6-12
Lassen
Eagle Lake. Pine Creek.
1584
Comment
CHSC99151
Barbarea orthoceras
Lowell Ahart; John Dittes
2008-6-20
14949
Lassen
In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
CHSC76094
Bassia hyssopifolia
Lowell Ahart
1999-9-13
8206
Lassen
On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish.
1207
Comment
RSA79262
Bassia hyssopifolia
E. K. Balls
1952-10-10
18137
Lassen
0.7 miles E of Standish, Hwy 395, between Susanville and Alturas.
1250
Comment
JEPS121240
Beckmannia syzigachne
Lowell Ahart, John Dittes
2013-7-22
18843
Lassen
West margin of duckfield, about 40 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley.
Comment
JEPS121246
Beckmannia syzigachne
Lowell Ahart, John Dittes
2013-7-22
18871
Lassen
40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
SJSU4353
Beckmannia syzigachne
J. W. Tilden
1960-6-27
1526
Lassen
5 mi E of Westwood on Moonlight Rd
1524
Comment
UC1100216
Beckmannia syzigachne
Herbert L. Mason
1947-7-9
13299
Lassen
5 mi e Bieber
Comment
UC573777
Beckmannia syzigachne
H. S. Yates
1936-8-11
6078
Lassen
2 mi ese Susanville; Susanville Quadrangle
1280
Comment
UCD56782
Beckmannia syzigachne
Leo Whitney
1934-8-6
2210
Lassen
Honey Lake Valley. Bank of Susan River.
1371
Comment
UC1790750
Berteroa incana
Arnold Tiehm
2005-7-14
15023
Lassen
Long Valley, Anderson (Saralegui) Ranch, 2.2 road mi W of Hwy 395 on Hwy 70, then 5.5 road mi N on Scott Road
1493
Comment
UCR182884
Berteroa incana
D. Mcdonald
2005-7-18
PDR 1307852
Lassen
Modoc Plateau, Hallelujah Junction
Comment
UCR182957
Berteroa incana
C. Battis
2005-8-2
s.n.
Lassen
Modoc Plateau, Anderson Ranch in southern part of county [c. 5.5 miles north of Hwy 70 on Scott Road]
1479
Comment Read comments May 25 2012
CHSC58833
Betula pumila var. glandulifera
Vernon H. Oswald; Lowell Ahart
1992-7-16
5116
Lassen
On Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville.
1719
Comment
CDA10495
Bidens cernua var. cernua
Gordon Leppig
1998-8-17
1047
Lassen
Northern California Peatlands; Modoc National Forest. Blue Lake Ranch.
Comment
CAS-BOT-BC413001
Bistorta bistortoides
A. A. Heller
1938-6-4
15141
Lassen
2 miles east of Westwood
1402
Comment
CAS-BOT-BC413003
Bistorta bistortoides
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-13
49225
Lassen
Elysian Valley northwest of Janesville
1325
Comment
HSC22872
Bistorta bistortoides
John Pratt
1970-6-13
8
Lassen
1677
Comment
CAS-BOT-BC127951
Blepharipappus scaber
John Thomas Howell
1934-6-10
11894
Lassen
Horse Lake
Comment
CAS-BOT-BC127956
Blepharipappus scaber
David D. Keck; J. Clausen
1935-6-25
3754
Lassen
Susanville, on hills just west of town
1310
Comment
CAS-BOT-BC128041
Blepharipappus scaber
Farris Farris
1935-5-20
s.n.
Lassen
Three miles southwest of Susanville
1341
Comment
CAS-BOT-BC128046
Blepharipappus scaber
David D. Keck; J. Clausen
1935-6-25
3754
Lassen
Susanville, on hills just west of town
1310
Comment
CDA19752
Blepharipappus scaber
D. Tillotson
1942-6-9
s.n.
Lassen
Modoc Plateau; Mud Flat.
0
Comment
CHSC13477
Blepharipappus scaber
J. Pitts
1967-6-23
266
Lassen
2 mi s of Eagle Lake Field Station, on the e side of the road.
Comment
CHSC48131
Blepharipappus scaber
Vernon H. Oswald
1986-6-15
2112
Lassen
Hwy 36, 15.0 mi E of Plumas-Lassen Co. line, 3.5 mi E of Fredonyer Pass.
1508
Comment
CHSC68732
Blepharipappus scaber
Vernon H. Oswald; Lowell Ahart
1997-5-27
8484
Lassen
East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd.
1627
Comment
HSC81800
Blepharipappus scaber
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6030
Lassen
Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road
1555
Comment
JEPS94612
Blepharipappus scaber
Vernon H. Oswald and Lowell Ahart
1997-5-27
8484
Lassen
e side of Hwy 139 at a small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.)
1627
Comment
SEINET11261380
Blepharipappus scaber
Robert L. Johnson, Mikel R. Stevens
2015-7-10
3922
Lassen
1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0
1545
Comment
SFV3785
Blepharipappus scaber
I. L. Wiggins, D. B. Wiggins
1961-6-11
16355
Lassen
East of Eagle Lake, 2 miles north of Susanville. Roadside.
1340
Comment
UC604683
Blepharipappus scaber
Farris Farris
1935-5-20
Lassen
Susanville
1341
Comment
UC773892
Blepharipappus scaber
L. R. Short
1936-6-10
S- 415
Lassen
Burgess Spr. Exp. Range
1798
Comment
CAS-BOT-BC127953
Blepharipappus scaber
B. J. Hammerly
1941-6-20
s.n.
Lassen
On dry plateau of lava boulders 8 mi S.-E. of Likely on Blue Lake
1676
Comment
CAS-BOT-BC128035
Blepharipappus scaber
Margaret Williams
1974-8-4
74 - L. - 73
Lassen
Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70
1493
Comment
RSA152683
Blepharipappus scaber
I. L. Wiggins, Dorothy Wiggins
1961-6-11
16355
Lassen
Roadside east of Eagle Lake, 2 miles north of Susanville.
Comment
SEINET10945354
Blepharipappus scaber
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2584
Lassen
6 mi. S of Adin; along CA Hwy. 139 right-of-way; in basalt-clay, grassy road bank; Artemisia-Juniper assoc.
1372
Comment
UC1181375
Blepharipappus scaber
R. W. Thorp and G. I. Stage
1960-6-11
60 -63
Lassen
6.5 mi north of Termo
Comment
UCD129601
Blepharipappus scaber
Bob Powell; Vic Claussen
1986-7-17
3274
Lassen
6 air miles south - southwest of Nubieber, within 100 feet of gate across main north-south trending road.
1402
Comment
CHSC13946
Boechera pinetorum
M. S. Taylor
1974-7-12
313
Lassen
Above road bank by Clear Lake in Lassen National Forest.
Comment
CAS-BOT-BC14294
Boechera platysperma
John Thomas Howell; Gordon H. True
1973-7-31
50040
Lassen
Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak.
1737
Comment
JEPS114362
Boechera puberula
Lowell Ahart, John Dittes
2008-6-19
14883
Lassen
Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber
1578
Comment
CAS-BOT-BC25510
Boechera retrofracta
G. Schoolcraft
1988-6-20
1815
Lassen
Ash Valley RNA, 16 miles west of Madeline.
1584
Comment
JEPS84940
Boechera retrofracta
Barbara Ertter with Gary Schoolcraft
1987-7-16
7174
Lassen
n.e. side Honey Lake (e. of road over saddle on w. side of Skeedaddle Mountains); Skeedaddle Mountains
1645
Comment
SEINET3165698
Boechera retrofracta
R. W. Spellenberg
2006-6-19
13743
Lassen
along a USFS access road 2 km E of Calif. Hwy 139, the junction of road and highway 31 km SE of Modoc Co. line (just S of Adin)
1715
Comment
CHSC66380
Boechera sparsiflora
Vernon H. Oswald; Lowell Ahart
1996-6-17
7774
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At the bridge spanning the Susan River on the N side of Hwy. 36.
1432
Comment
JEPS88209
Boechera sparsiflora
Vernon H. Oswald and Lowell Ahart
1996-6-17
7774
Lassen
ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, slope at the bridge spanning the Susan R. on n. side of Hwy 36); Modoc Plateau, Bizz Johnson Trail
1432
Comment
JEPS90262
Boechera sparsiflora
Dean Wm. Taylor with Glenn L. Clifton
1992-5-7
12542
Lassen
1.5 mi sw of Ash Valley Cemetery (Modoc Plateau, Ash Valley); Modoc Plateau, Ash Valley
Comment
CAS-BOT-BC25706
Boechera sparsiflora
Reed Clark Rollins; Kathryn W. Rollins; Aileen Roads
1983-7-5
83226
Lassen
Plumas National Forest. Above Laufman Ranger Station. 4.5 miles east of US Highway 395.
Comment
JEPS103163
Bolboschoenus maritimus
B. Corbin and D. Armentrout
2002-9-4
1098
Lassen
Biscar Reservoir, upper pond.
1357
Comment
SEINET8193957
Brodiaea congesta
J. A. Young
1978-4-13
s.n.
Lassen
Meyers Ranch.
Comment
CHSC60929
Brodiaea coronaria subsp. coronaria
Vernon H. Oswald; Lowell Ahart
1993-7-8
5676
Lassen
N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake.
1737
Comment
HSC82193
Brodiaea coronaria subsp. coronaria
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6047
Lassen
Along Ash Creek at Ash Creek Campground
1494
Comment
CAS-BOT-BC149499
Bromus briziformis
B. Bartholomew; M. Gilbert; L. Skog
1993-5-13
6572
Lassen
U.S. Highway 395 1.3 km south of railroad crossing and 12. 9 km north of Litchfield.
1330
Comment
JEPS26570
Bromus briziformis
Lauramay T. Dempster
1961-6-17
1675
Lassen
about 8 mi n of Karlo Road junction with Hwy 395, w of highway Karlo Road
1584
Comment
UCD57490
Bromus briziformis
R. M. Love
1944-7-10
s.n.
Lassen
South of Ravendale.
Comment
UC1130972
Bromus carinatus var. carinatus
H. P. Hagge
1929-8-12
29
Lassen
Logan Mountain
1828
Comment
UC773968
Bromus carinatus var. carinatus
L. R. Short and J. Warren
1936-6-29
S 460
Lassen
Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range
1820
Comment
UCD59099
Bromus carinatus var. marginatus
R. Tofsrud
1947-7-1
224
Lassen
Between Ravendale and Thermo.
Comment
CDA1827
Bromus japonicus
A. A. Beetle
1941-6-28
2809
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak.
0
Comment
JEPS97404
Bromus japonicus
Vernon H. Oswald and L. Ahart
1995-6-19
6874
Lassen
T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395
1383
Comment
UC506916
Bromus orcuttianus
George A. Fischer, Irwin H. Johnson
1933-7-14
F 261
Lassen
Lassen National Forest
1783
Comment
UC1024701
Bromus racemosus
L. Whitney
1934-7-18
2143
Lassen
Lassen National Forest
1371
Comment
POM112560
Bromus secalinus
Marcus E. Jones
1897-6-21
s.n.
Lassen
Chat.
1616
Comment
CHSC106670
Bromus tectorum
B. Ignacio
2008-5-3
Lassen
Fort Sage Mountains.
1520
Comment
CHSC12421
Bromus tectorum
Anne Linda Brisk
1969-6-19
4
Lassen
1/4 mi NE of ELBS.
1554
Comment
CHSC23519
Bromus tectorum
Wayne O. Baum
1971-7-5
71 -15
Lassen
S. slope of Gallatin Peak.
2042
Comment
CHSC36476
Bromus tectorum
Margaret E. Halloran
1982-6-6
13
Lassen
N of Eagle Lake Field Station on a point directly e of Pelican Pt.
Comment
HSC9348
Bromus tectorum
C. S. Chavez
1965-5-1
60
Lassen
20 mi. N of Susanville on Hwy. 395.
1220
Comment
UC1024827
Bromus tectorum
Leo Whitney
1935-7-12
3233
Lassen
Lassen National Forest, Camp 10, Fruit Grower's Supply Company Lassen National Forest; , Camp 10, Fruit Grower's Supply Compa
Comment
UC1131326
Bromus tectorum
A. Simontacchi
1940-6-8
835
Lassen
Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station
1706
Comment
SEINET10515057
Bromus tectorum
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 3117
Lassen
6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash.
1402
Comment
CAS-BOT-BC185530
Bromus vulgaris
John Thomas Howell; Gordon H. True
1973-7-31
50056
Lassen
Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range.
1783
Comment
CAS-BOT-BC438313
Calandrinia ciliata
H. D. Ripley; R. C. Barneby
1942-6-14
5736
Lassen
Westwood
1554
Comment
CHSC112410
Callitriche heterophylla
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18750
Lassen
Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
POM312337
Callitriche verna
Verne Grant, H. L. Mason
1947-7-9
13294
Lassen
5 miles E of Bieber.
Comment
SEINET3828391
Callitriche verna
R. F. Thorne, Larry E. De Buhr
1975-1
46986
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line.
1616
Comment
CHSC27601
Calocedrus decurrens
George Deniso
1978-7-24
99
Lassen
Roadside between Gallatin Peak and Miners Bay, SE side of Eagle L.
1597
Comment
CHSC71
Calocedrus decurrens
K. McKenzie
1928-4-10
Lassen
Big Valley Mountain.
914
Comment
CAS-BOT-BC487806
Calochortus coeruleus
T. S. Brandegee
1892-7-2
s.n.
Lassen
Susanville, Calif
Comment
UC119897
Calochortus macrocarpus
T. S. Brandegee
1892-7-1
Lassen
Susanville
Comment
HSC63946
Calyptridium monospermum
Teresa Prendusi
1980-7-14
Lassen
Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd.
1524
Comment
CHSC30571
Calyptridium umbellatum
Sori H Shad
1970-6-25
32
Lassen
Found E. 2 mile past Murrer's Meadow on N. side of road in rocky soil.
1524
Comment
CHSC6233
Calyptridium umbellatum
L. Harman
1946-6-23
Lassen
Roop mountain.
2133
Comment
UC72577
Calyptridium umbellatum
Milo S. Baker
1890-1
Lassen
Milford
Comment
SD52147
Calyptridium umbellatum
Unknown
1894-7-2
Lassen
Robin's Creek
1370
Comment
SEINET188321
Calyptridium umbellatum
C. L. Hitchcock
1940-5-26
6608
Lassen
Ca 12 mi N of Fall River Mills (Shasta Co) on Fall River
1372
Comment
RSA0017409
Calystegia occidentalis subsp. occidentalis
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin's Ranch.
1463
Comment
HSC22954
Camassia quamash subsp. breviflora
John Pratt
1970-6-21
32
Lassen
Seasonally flooded lake edge
1707
Comment
JEPS61547
Camassia quamash subsp. quamash
Leland S. Smith
1927-6-10
14
Lassen
Lassen National Forest, Norvell Flat Norvell Flat; Lassen National Forest, Norvell Flat
1747
Comment
UC2027336
Camelina microcarpa
Anthony Baniaga
2011-6-10
321
Lassen
Along Highway 395 ca. 6.6 m S of Karlo Road. quadrangle.
Comment
POM38358
Camissonia andina
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
RSA38438
Camissonia boothii subsp. alyssoides
P. A. Munz
1947-5-19
11869
Lassen
19 miles south of Ravendale, on Hwy 395.
1341
Comment
NY851231
Camissonia claviformis var. cruciformis
P. A. Munz
1947-5-19
11870
Lassen
19 miles south of Ravendale, on Highway 395
Comment
SEINET5343990
Camissonia contorta
M. J. Williams
1974-7-26
74 -L-22
Lassen
2 mi west of Hallelujah Junction, south of Hwy. 70
1494
Comment
UC180090
Camissonia contorta
Milo S. Baker
1890-1
Lassen
Milford
Comment
UC69560
Camissonia contorta
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Chat Honey Lake Valley, Long Valley
Comment
JEPS107466
Camissonia parvula
Lowell Ahart, John Dittes
2005-6-1
11852
Lassen
On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction
1448
Comment
HSC30037
Camissonia tanacetifolia
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19153
Lassen
3 mi. N of Westwood
Comment
NY852073
Camissonia tanacetifolia
J. T. Howell
1973-8-1
50209
Lassen
Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville
2164
Comment
CAS-BOT-BC160833
Camissonia tanacetifolia subsp. quadriperforata
James Jokerst
1983-5-31
1787
Lassen
Near Madeline Plains
1583
Comment
CAS-BOT-BC160868
Camissonia tanacetifolia subsp. tanacetifolia
M. S. Baker; Frank Nutting
1894-8-21
s.n.
Lassen
Near Eagle Lake
1524
Comment
CAS-BOT-BC160877
Camissonia tanacetifolia subsp. tanacetifolia
R. K. Gierisch; D. H. Esplin
1969-7-18
3550
Lassen
Near Modoc National Forest. Madeline Plains
Comment
CAS-BOT-BC160865
Camissonia tanacetifolia subsp. tanacetifolia
Peter H. Raven
1963-5-29
18426
Lassen
Along U. S. Highway 395, 0.9 miles north of Ravendale
Comment
CAS-BOT-BC160874
Camissonia tanacetifolia subsp. tanacetifolia
Peter H. Raven
1962-5-28
17875
Lassen
11.6 miles north of Litchfield
Comment
NY119877
Cardamine breweri
R. C. Rollins
1981-5-30
81168
Lassen
Gold Run Road, toward Ski Line Drive, 10 miles S of Susanville
Comment
UC10332
Cardamine breweri
M. S. Baker and Frank Nutting
1894-7-9
Lassen
Pine Creek
Comment
CHSC99732
Cardamine oligosperma
Lowell Ahart; John Dittes
2008-6-20
14942
Lassen
On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber.
1263
Comment
CDA3662
Cardaria chalepensis
T. C. Fuller
1964-10-7
12695
Lassen
Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 1 mile southwest of Nubieber.
0
Comment
UC1137782
Carex
August L. Hormay
1934-5-14
Lassen
Gray's Flat Well Lassen National Forest
1706
Comment
UCD163081
Carex
Jack Major
1966-6-24
Lassen
Modoc National Forest. Long Valley. 3 airline miles southwest of Patterson Guard Station. (Exact location unknown. Coordinates estimated by label maker.)
1981
Comment
CHSC112416
Carex angustata
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18769
Lassen
300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC58858
Carex angustata
Vernon H. Oswald; Lowell Ahart
1992-7-16
5115
Lassen
Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville.
1719
Comment
JEPS96097
Carex aquatilis var. aquatilis
Vernon H. Oswald and Lowell Ahart
1996-6-17
7813
Lassen
Bizz Johnson Trail at milepost 6.0 e Devils Corral Trailhead (<trailhead> located off Hwy 36 w of Susanville); Modoc Plateau
1420
Comment
CAS-BOT-BC18105
Carex athrostachya
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49456
Lassen
Sierra Nevada. Elysian Valley, west of Janesville.
1325
Comment
UC1100437
Carex athrostachya
Herbert L. Mason
1947-7-9
13300
Lassen
5 mi E of Bieber
Comment
UC2031878
Carex bolanderi
Nick Otting
2003-7-17
701
Lassen
Cascade Mountains, Susan River,3.25 air miles west of Susanville.
Comment
UC2015834
Carex breweri
Ron Mastrogiuseppe, Joy Mastrogiuseppe
1986-8-2
4443
Lassen
Lassen Volcanic National Park. Lassen Peak, near parking area.
Comment
CHSC96431
Carex cusickii
Gordon Leppig; J. Cromwell
1997-7-27
620
Lassen
Modoc National Forest. Blue Lake Ranch.
1970
Comment
HSC95168
Carex cusickii
Gordon Leppig, J. Cromwell
1997-7-26
600
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CHSC113778
Carex davyi
Barbara L. Wilson; Peter Zika
2011-8-7
16805
Lassen
Highwy 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley.
1740
Comment
POM80803
Carex densa
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin s Ranch.
1463
Comment
RSA298354
Carex douglasii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19245
Lassen
About 2 miles north of Westwood.
Comment
UC190412
Carex douglasii
M. S. Baker and Frank Nutting
1894-7-5
Lassen
Mts. s Dixey Valley
Comment
UC1924590
Carex douglasii
Debra Valov
2006-5-28
2006020
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1285
Comment
UC773860
Carex douglasii
L. R. Short and Wm. Gansberg
June 1936
S- 419
Lassen
Burgess Spring Experiment Range
1856
Comment
CDA33049
Carex douglasii
T. C. Fuller
1963-7-15
10890
Lassen
South side of road to Little Valley, 2.9 miles southeast of Pittville.
0
Comment
SEINET7485203
Carex filifolia
Barbara L. Wilson, Danna Lytjen and Nick Otting
2005-1
11494
Lassen
Blue Door Flat, seven or eight miles east of Highway 295 on county road 510
1774
Comment
CAS-BOT-BC20166
Carex filifolia var. erostrata
John Thomas Howell
1934-7-6
12451
Lassen
Harvey Valley.
Comment
HSC48223
Carex filifolia var. erostrata
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19171
Lassen
Harvey Valley near Cone Springs
Comment
UC1133498
Carex filifolia var. erostrata
Robert W. Gardner
1939-7-6
G- 30
Lassen
Grass Valley Halls Flat Quadrangle
Comment
CAS-BOT-BC20164
Carex filifolia var. erostrata
Lassen 1927 G. S. Crew
1927-7-15
60
Lassen
Lassen Forest.
1691
Comment
SEINET7559362
Carex fracta
Barbara L. Wilson, Richard Brainerd, Bruce Newhouse
2004-8-28
11194
Lassen
Near Bluff Falls in the Lassen National Forest, approximately 0.7 air mile south of the south boundary of Lassen Volcanic National Park on Highway 89.
1981
Comment
CAS-BOT-BC22275
Carex hassei
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49477
Lassen
Elysian Valley, west of Janesville.
1325
Comment
UC1609196
Carex heteroneura
Vernon H. Oswald and Lowell Ahart
1993-8-3
5744
Lassen
Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor.
1932
Comment
CHSC110898
Carex integra
Lowell Ahart; John Dittes
2012-7-9
18299
Lassen
In the meadow, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
HSC103653
Carex lenticularis var. limnophila
Thomas W. Nelson, Jane Nelson
1985-8-10
8010
Lassen
Along north side of Silver Lake
1829
Comment
JEPS97331
Carex limosa
Vernon H. Oswald
1995-8-26
7217
Lassen
T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely
1859
Comment
UC1133499
Carex microptera
A. Simontacchi
1940-7-3
917
Lassen
3.5 mi wsw Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle
Comment
JEPS103202
Carex microptera
G. Schoolcraft
1994-7-7
2366 A
Lassen
south end of Warner Mountains West of Boot Lake
2194
Comment
CHSC110970
Carex nebrascensis
Lowell Ahart; John Dittes
2012-7-9
18298
Lassen
Scattered along a small drainage, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northest of Bieber, Big Valley.
1267
Comment
CHSC96455
Carex nebrascensis
Gordon Leppig
1998-8-17
1053
Lassen
Modoc National Forest. Blue Lake Ranch.
1970
Comment
UC1536798
Carex nebrascensis
Gordon H. True Jr.
1939-6-15
995
Lassen
near Grasshopper Valley; Bullard Lake
Comment
HSC103614
Carex nebrascensis
Thomas W. Nelson, Jane Nelson
1985-8-10
8005
Lassen
Along north side of Silver Lake
1829
Comment
CAS-BOT-BC119715
Carex nervina
Clare B. Hardham
1961-6-17
7508
Lassen
Baxter Creek south of Susanville.
Comment
UC2031879
Carex pachystachya
Nick Otting and Dick Brainerd
2003-7-17
700
Lassen
Cascade Mountains, Susan River, 4 air miles west of Susanville.
Comment
CHSC66413
Carex pellita
Vernon H. Oswald; Lowell Ahart
1996-6-17
7809
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville.
1420
Comment
SEINET13407108
Carex pellita
G. Schoolcraft
1995-7-11
2504
Lassen
Along Silver Creek
1768
Comment
SEINET7571315
Carex petasata
L. P. Janeway
2004-6-26
8153
Lassen
Poison Lake 7.5' quad, High Cascade Range, about 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest.
1750
Comment
SEINET10817202
Carex phaeocephala
Willard W. Eggleston
1927-7-11
Eggleston 21474
Lassen
Bogard Ranger Station, Lassen Forest.
1500
Comment
SEINET7572131
Carex praegracilis
Lowell Ahart, John Dittes
2005-6-1
11879
Lassen
About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction.
1470
Comment
UC1133503
Carex praegracilis
Robert W. Gardner
1939-6-15
G- 37
Lassen
Little Harvey Valley Halls Flat Quadrangle
Comment
CAS-BOT-BC118400
Carex praegracilis
John Thomas Howell
1975-7-23
51407
Lassen
Wet ground along Hwy 395 between Johnstonville and Jonesville
1280
Comment
CHSC118476
Carex praegracilis
Don Lepley
2015-6-16
Lassen
Lassen National Forest. Eagle Lake Ranger District. Sandy Beach of Eagle Lake, ~1.6 air miles north of Spalding marina.
1559
Comment
SEINET7573104
Carex raynoldsii
George W. Gillett
1957-7-29
948
Lassen
Lassen Volcanic National Park, along trail between Butte Lake and Snag Lake.
1859
Comment
CAS-BOT-BC118027
Carex rossii
John Thomas Howell; Gordon H. True
1973-8-1
s.n.
Lassen
Headwater of Baxter Creek, Diamond Mts.
2164
Comment
JEPS118161
Carex rossii
Dean W. Taylor
2009-5-20
20604
Lassen
Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site]
1478
Comment
CAS-BOT-BC118229
Carex scopulorum var. bracteosa
John Thomas Howell
1934-6-14
12162
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
CAS-BOT-BC117700
Carex simulata
Alice Eastwood; John Thomas Howell
1940-6-15
8305
Lassen
Willow Creek near Hayden Hill.
Comment
HSC95305
Carex simulata
Gordon Leppig, Tony LaBanca, L. Arguello
1997-6-28
514
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
UC2031886
Carex simulata
Nick Otting
2003-7-16
686
Lassen
Modoc Plateau, Smoke Creek, at Big Spring, 13 air miles east-southeast of Ravendale.
Comment
CAS-BOT-BC117018
Carex straminiformis
Clare B. Hardham
1971-8-22
18423
Lassen
Diamond mountain.
Comment
SEINET13715331
Carex straminiformis
G. Schoolcraft
1997-8-6
2669
Lassen
Diamond Mountain, N slope
2317
Comment
CAS-BOT-BC116611
Carex subfusca
Hans Leschke
1954-7-5
s.n.
Lassen
Hat Lake
1965
Comment
CAS-BOT-BC116613
Carex subfusca
Hans Leschke
1958-8-17
1568
Lassen
Reflexion Lake
1792
Comment
HSC95272
Carex vesicaria
Gordon Leppig, Kai Neander, Juli Neander
1997-7-26
695
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
HSC103632
Carex vesicaria
Thomas W. Nelson, Jane Nelson
1985-8-10
8027
Lassen
Silver Lake, along north side of arm on east side of lake.
1829
Comment
SEINET7579960
Carex vesicaria
George W. Gillett
1957-7-22
879
Lassen
Lassen Volcanic National Par, Snag Lake, matin of gravel bars along south shore.
1850
Comment
RSA517387
Carex whitneyi
Leland S. Smith
1922-7-23
75
Lassen
Lassen National Forest.
Comment
CAS-BOT-BC248971
Castilleja
Margaret M. Hanna
1956-6-3
943
Lassen
2 mi. West of Nubieber
Comment
HSC20562
Castilleja angustifolia
M. L. Stuart
1965-5-2
56
Lassen
2 mi. N of Termo. on Hwy. 395
1829
Comment
CAS-BOT-BC249615
Castilleja applegatei subsp. pinetorum
A. M. Vollmer; L. Beane
1953-7-1
39
Lassen
Along Halls Flat road, beginning 6 miles west of Susanville to McArthur
1554
Comment
CAS-BOT-BC249618
Castilleja applegatei subsp. pinetorum
B. J. Hammerly
1941-6-20
44
Lassen
8 mi. S.-E. of Likely on Blue Lake road
1676
Comment
CHSC12459
Castilleja applegatei subsp. pinetorum
Robert W. Severin
1969-7-6
5
Lassen
1 mile e E.L.B.S. on road to Five Points.
Comment
CHSC13732
Castilleja applegatei subsp. pinetorum
Cornell Freeman
1973-7-11
5
Lassen
Found on Gallatin Pk. on the east side of Eagle Lake.
Comment
CHSC60412
Castilleja applegatei subsp. pinetorum
Mary Ann Showers
1992-6-13
2538
Lassen
Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake.
1828
Comment
JEPS117583
Castilleja applegatei subsp. pinetorum
Lowell Ahart, John Dittes
2010-7-31
17009
Lassen
About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1510
Comment
JEPS85742
Castilleja applegatei subsp. pinetorum
Roy E. Buck and Robert A. Price
1988-6-26
1030
Lassen
ca 0.5 air mi n Fredonyer Peak main summit (on subsidiary peak, ca 30 air mi nne of Susanville); Fredonyer Peak
2377
Comment
UC1484795
Castilleja campestris subsp. campestris
Noel H. Holmgren and Patricia K. Holmgren
1978-6-10
8903
Lassen
9 mi ene Termo (and 8 air distance); Madeline Plains, Coyote Flat
1630
Comment
SEINET10549093
Castilleja chromosa
Mary Susan Taylor
1982-5-29
Taylor 4568
Lassen
T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft.
1524
Comment
CHSC23901
Castilleja lacera
A. W. Harvilik
1967-7-8
39
Lassen
Collected in Murrer's Meadow ca. 3 mi se of Eagle Lake Biological Station.
1524
Comment
CHSC66262
Castilleja lacera
Vernon H. Oswald; Lowell Ahart
1996-6-24
7842
Lassen
Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow.
1633
Comment
CHSC92738
Castilleja lacera
L. P. Janeway
2005-7-3
8454
Lassen
High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout.
1580
Comment
HSC82247
Castilleja lacera
Thomas W. Nelson, Jane P. Nelson
1980-7-6
5985
Lassen
Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley
1555
Comment
JEPS79153
Castilleja lemmonii
L. R. Heckard with R. Bacigalupi
1980-6-12
5260
Lassen
ne Westwood (near golf course)
1554
Comment
HSC69066
Castilleja linariifolia
Gary Schoolcraft
1979-7-5
124
Lassen
Near top of Observation Peak
2134
Comment
UC1523790
Castilleja miniata
Gary Schoolcraft
Aug 1979
Lassen
Goodrich Meadow
1554
Comment
CAS-BOT-BC244889
Castilleja miniata
Alice Eastwood
1912-8-22
1893
Lassen
Battle Creek meadows. Lassen Butte Region.
Comment
CAS-BOT-BC244890
Castilleja miniata
Alice Eastwood
1912-8-22
1808
Lassen
Foot of Lassen Butte
Comment
CHSC5901
Castilleja miniata subsp. miniata
R. Gein
1946-6-22
Lassen
Webb's Camp, Eagle lake.
1557
Comment
JEPS86248
Castilleja pilosa
L. R. Heckard and T. I. Chuang
1981-6-10
5529
Lassen
about 0.5 mi e Nubieber
1249
Comment
SBBG7071
Castilleja pilosa
H. and M. Dearing
1939-6-6
3566
Lassen
Pitt River, near Bieber
Comment
UC1012185
Castilleja pilosa
Francis W. Pennell
1940-6-9
25761
Lassen
5 mi s Ravendale (Route 395)
1645
Comment
RSA505409
Castilleja psittacina
R. C. Bacigalupi, S. Galen Smith
1957-6-28
6004
Lassen
5.9 miles south of Madeline.
1616
Comment
CHSC116102
Castilleja tenuis
Lowell Ahart; John Dittes
2015-7-13
20314
Lassen
About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
JEPS88198
Castilleja tenuis
Vernon H. Oswald and Lowell Ahart
1996-6-17
7802
Lassen
7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy 36, n side of trail between Devils Corral Trailhead and the 6.0 mi post); Modoc Plateau, Bizz Johnson Trail
1420
Comment
RSA0037002
Castilleja tenuis
Lowell A. Ahart, John Dittes
2008-6-19
14874
Lassen
About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber.
1578
Comment
RSA0035394
Caulanthus major var. nevadensis
Lowell Ahart, John Dittes
2008-6-20
14920
Lassen
About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
CAS-BOT-BC48530
Ceanothus cordulatus
A. M. Vollmer; L. Beane
1953-7-1
31
Lassen
Along Halls Flat road, beginning 6 miles west of Susanville, to MacArthur
1554
Comment
CHSC46505
Ceanothus cordulatus
Lowell Ahart
1974-7-9
514
Lassen
Growing along the edge of Eagle Lake Road on dry stony soil, about 4 miles west of Susanville.
1584
Comment
SEINET196483
Ceanothus cordulatus
C. B. Heisser
1947-7-13
s.n.
Lassen
Near Westwood
Comment
CAS-BOT-BC52047
Ceanothus prostratus
A. M. Vollmer; L. Beane
1953-7-1
88
Lassen
Along Halls Flat Road, beinning 6 miles West of Susanville to McArthur
1554
Comment
CAS-BOT-BC52053
Ceanothus prostratus
A. A. Heller
1941-6-26
16230
Lassen
on the ridge West of Nieubieber
Comment
SEINET10493654
Ceanothus prostratus
Mary Merello
1993-6-28
Merello 748
Lassen
Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils.
1700
Comment
UC727092
Ceanothus prostratus
A. A. Heller
1941-6-26
16230
Lassen
on roadside banks on the ridge w Nieubieber; w of Nieubierber
Comment
SEINET5339354
Ceanothus prostratus
W. Priest
1956-4-27
s.n.
Lassen
2 miles north of Susanville on US 395
1524
Comment
UC1071532
Ceanothus velutinus
A. Simontacchi
1940-6-15
866
Lassen
1.0 mi ssw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle
Comment
RSA747546
Ceanothus velutinus var. velutinus
K. M. Meyer, A. Townesmith
2007-7-23
153
Lassen
Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36.
1993
Comment
CAS-BOT-BC272110
Centaurea cyanus
Margaret Williams; Steven Williams
1974-7-26
74 -L-9
Lassen
Near Hallelujah Junction west of Why 395 and south of Hwy 70, Sierra Nevada
1493
Comment
UCD130022
Centaurea diffusa
T. C. Fuller
1962-8-28
9481
Lassen
east side of Highway 395 to Madelaine, 1.9 mile north of Termo.
Comment
CDA7345
Centaurea squarrosa
Loring White
1950-8-9
Lassen
Cramer Ranch. Big Valley
0
Comment
UCD130124
Centaurea virgata subsp. squarrosa
Dan Marcum
1980-8-24
s.n.
Lassen
Big Valley.
Comment
JEPS46972
Centaurium exaltatum
W. L. Jepson
1918-8-2
7759
Lassen
Beckwith Pass
1463
Comment
JEPS84967
Centaurium exaltatum
Barbara Ertter
1987-7-24
7305
Lassen
ca 0.75 mi ene Beckwourth Pass (at the end of old crumbling paved road)
1524
Comment
NY187215
Centaurium exaltatum
B. J. Ertter
1987-7-24
7305
Lassen
Ca. 3/4 mi ENE of Beckwourth Pass at end of crumbling paved road.
1524.0
Comment
SEINET7379749
Centromadia pungens
M. J. Williams, G. Smith
1983-1
83- 155 -1
Lassen
5 mi E of Hwy 395 on A-3 which joins the road to Alturas
1372
Comment
HSC23531
Ceratophyllum demersum
R. Carter
1967-7-13
593
Lassen
5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek
1561
Comment
CAS-BOT-BC400181
Ceratophyllum demersum
Milo S. Baker
July 25
3644 a
Lassen
Eagle Lake
Comment
CAS-BOT-BC400183
Ceratophyllum demersum
D. Toren; B. Trowbridge
1975-6-19
5183
Lassen
Blue Lake
1828
Comment
SDSU8985
Cercocarpus betuloides
D. F. Howe
1961-8-4
3134
Lassen
11.5 miles east of McArthur on US 299.
1372
Comment
CAS-BOT-BC136988
Cercocarpus betuloides var. betuloides
Alice Eastwood; John Thomas Howell
1940-6-11
7965
Lassen
Eastern Fall River Valley
Comment
UCD22434
Cercocarpus betuloides var. betuloides
Brian Vanden Heuvel
2003-4-10
196
Lassen
Shasta National Forest. East slope of Big Valley Mountains. 0.7 miles north of CA 299 on Foothill Road (Four Corners Road), just east of the road.
Comment
UCD35729
Cercocarpus ledifolius
Beecher Crampton
1960-6-18
5710
Lassen
Southern Warner Mountains, vicinity of Blue Lake Ranch.
1981
Comment
SEINET10543177
Cercocarpus ledifolius
Katherine L. Morris
1973-5-25
Morris 218
Lassen
2.6 miles w of susanville, on us 36, in an area of pinus jeffreyi and purshia
Comment
JEPS126504
Cercocarpus ledifolius var. intermontanus
Alia Johnson, Jocelyn Munoz, Jillian Sarazen
2016-7-22
CA 350 -77
Lassen
Take Horse Lake road and drive north of Horse Lake to the unnamed 6500 ft peak with a metal rod on top.
Comment
CHSC29948
Cercocarpus ledifolius var. ledifolius
Robin L. Ondricek
1978-6-8
45
Lassen
Ridge E of Lower Dry Lake.
1767
Comment
CAS-BOT-BC276619
Chaenactis douglasii var. douglasii
John Thomas Howell; Gordon H. True
1973-8-1
50208
Lassen
Headwaters of Baxter Creek, E slope of Diamond Range S of Susanville
2164
Comment
CHSC4855
Chaenactis douglasii var. douglasii
R. Carter
1967-7-13
586
Lassen
On s side of rd. On the rd to Eagle Lake Biology Station and Willow Creek.
1584
Comment
CDA10717
Chaenactis glabriuscula var. megacephala
T. C. Fuller
1963-6-1
10628
Lassen
East side of road to Hall s Flat, 4.9 miles south of Pittville.
0
Comment
UCD19699
Chaenactis nevadensis
Donald W. Kyhos
1967-9-1
67 -87
Lassen
Mount Lassen National Park, in the devastated area within 1/2 mile north of Hat Lake.
Comment
SEINET7450297
Chaenactis stevioides
F. B. Headley
1915-5-28
s.n.
Lassen
Honeylake
Comment
CHSC30593
Chamaebatiaria millefolium
Leonard Walk
1972-7-5
40
Lassen
On Rd. 5.16 Belowe Eagle Lake Biology Station water tank.
1554
Comment
CHSC5919
Chamaesaracha nana
M. West
1946-6-18
Lassen
Spalding's, Eagle Lake.
1554
Comment
CHSC65310
Chamaesyce serpillifolia subsp. serpillifolia
Vernon H. Oswald; Lowell Ahart
1995-8-14
7178
Lassen
Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville.
1348
Comment
UC1130434
Chamaesyce serpyllifolia
A. Simontacchi
1940-7-7
943
Lassen
Halls Flat Ranger Station
1706
Comment
UC1191330
Chenopodium chenopodioides
Malcolm A. Nobs and S. Galen Smith
1949-7-22
1071
Lassen
Eagle Lake; ne shore
Comment
SEINET4171909
Chenopodium leptophyllum
M. J. Williams
1974-7-26
74 -L-36
Lassen
2 miles west of Hallelujah Junction, south of HWY 70
1494
Comment
CDA23383
Chenopodium leptophyllum
M. K. Bellue
1938-8-1
Lassen
Near Butte Lake.
0
Comment Read comments Nov 1 2014
NY652205
Chenopodium leptophyllum
B. Corbin
2002-10-2
1114
Lassen
East of Highway 139, southeast of Eagle Lake
1731.3
Comment
CHSC68860
Chenopodium simplex
Vernon Oswald; Lowell Ahart
1997-6-24
8602
Lassen
South of Susanville on the north side of Diamond Mtn., at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd.
1655
Comment
CAS-BOT-BC39671
Chorispora tenella
William Anderson
1963-5-7
s.n.
Lassen
Milford.
Comment
CHSC23506
Chrysolepis sempervirens
Wayne O. Baum
1971-7-8
71 -64
Lassen
E. slope of Gallatin Peak.
1920
Comment
JEPS28679
Chrysolepis sempervirens
George W. Gillett
1957-7-26
905
Lassen
point of rocks w Butte Lake outlet (and above trail); Lassen Volcanic National Park
1844
Comment
UCSB62935
Chrysolepis sempervirens
Sarr, Dan
1995-7-31
Lassen
within crater of Crater Mountain
670
Comment
UC1137594
Chrysothamnus humilis
George A. Fischer and Irwin H. Johnson
1933-9-8
F- 281
Lassen
w end of Patterson Flat; Lassen Forest, Patterson Flat
1706
Comment
UCD38333
Chrysothamnus viscidiflorus
Beecher Crampton
1954-5-11
1883
Lassen
Beckwourth Pass.
1588
Comment
UC1483877
Chrysothamnus viscidiflorus subsp. lanceolatus
G. Schoolcraft
1979-8-23
182
Lassen
Painter Flat
Comment
CHSC42146
Chrysothamnus viscidiflorus subsp. viscidiflorus
C. E. Laver
1985-8-14
Lassen
Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. Along roadsides.
2194
Comment
HSC103551
Chrysothamnus viscidiflorus subsp. viscidiflorus
Thomas W. Nelson, Jane Nelson
1985-8-10
8030
Lassen
Along north side of Silver Lake
1829
Comment
JEPS97319
Chrysothamnus viscidiflorus subsp. viscidiflorus
Vernon H. Oswald and L. Ahart
1995-8-14
7183
Lassen
T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Shrub to ca. 5 dm tall growing at roadside. Leaves spirally twisted.
1645
Comment
SEINET5727104
Chrysothamnus viscidiflorus subsp. viscidiflorus
Lowell E. Urbatsch, Vesna Karaman, Castro
2000-1
7713
Lassen
Collected along Forest Road 37N11, off CA Hwy 139.; Modoc National Forest
1555
Comment
UC1776665
Chrysothamnus viscidiflorus subsp. viscidiflorus
G. Schoolcraft
1994-9-13
2430
Lassen
Just above gate along road to Fredonyer Pk. lookout
2255
Comment
UC747217
Chrysothamnus viscidiflorus subsp. viscidiflorus
G. Thomas Robbins
1945-10-7
2154
Lassen
2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt.
1828
Comment
CAS-BOT-BC162755
Chylismia claviformis subsp. cruciformis
A. A. Heller
1938-6-23
15211
Lassen
On an extensive flat north of Balls Canyon on U.S. Highway #395
Comment
UC1602277
Chylismia claviformis subsp. cruciformis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3399
Lassen
Amedee Honey Lake Valley
Comment
SEINET10725178
Cichorium intybus
Karen M. Meyer, Andrew Townesmith
2007-7-19
Meyer 133
Lassen
Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek.
1459
Comment
CAS-BOT-BC184829
Cinna latifolia
John Thomas Howell; Gordon H. True
1973-8-1
50246
Lassen
Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range.
1950
Comment
UCD59781
Cinna latifolia
John Thomas Howell; G. H. True
1973-8-1
50346
Lassen
Gold Run Creek road south of Susanville, Diamond Range.
1950
Comment
UC1136774
Cirsium andersonii
L. R. Short and D. Gish
1936-7-15
S- 489
Lassen
Burgess Spr. Exp. Range Lassen Forest
1825
Comment
UCD18968
Cirsium andersonii
Raymond D. Ratliff
1965-8-5
45
Lassen
Lassen National Forest, Harvey Valley Allotment (HV 20-14).
1725
Comment
SDSU3763
Cirsium andersonii
D. F. Howe
1964-8-1
3911
Lassen
3.3 miles on ridge road from Harvey Creek, Warner Mts., Modoc National Forest.
1951
Comment
CAS-BOT-BC277936
Cirsium canovirens
T. C. Fuller
1959-7-7
2739
Lassen
Hwy. 395, 6 miles north/road to Karlo
Comment
CAS-BOT-BC278008
Cirsium cymosum
Alice Eastwood; John Thomas Howell
1940-6-15
8307
Lassen
Willow Creek near Hayden Hill
Comment
CAS-BOT-BC278010
Cirsium cymosum
Arnold Tiehm; James Young; Raymond Evans
1984-6-7
8596
Lassen
Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield
1386
Comment
CAS-BOT-BC278005
Cirsium cymosum
Mrs. H. C. Cantelow
1940-5-31
s.n.
Lassen
5 miles east of McArthur, on highway 299
Comment
RSA0070594
Cirsium cymosum
Arnold Tiehm, Raymond Evans, James Young
1984-6-7
8596
Lassen
Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield.
1387
Comment
UCD20369
Cirsium cymosum
Joe DiTomaso
2002-6-5
s.n.
Lassen
about 3 miles northwest of the junction between Nevada, Modoc, and Lassen counties.
Comment
CDA1259
Cirsium inamoenum
T. C. Fuller
1980-8-5
20312 -A
Lassen
28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground.
Comment
JEPS59279
Cirsium occidentale var. californicum
W. L. Jepson
1918-8-4
7807
Lassen
Horse Lake
1554
Comment
CDA1489
Cirsium ochrocentrum
Lee Wheeler
1959-7-23
s.n.
Lassen
Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.)
Comment
CAS-BOT-BC280440
Cirsium ochrocentrum
T. C. Fuller
1966-7-22
14983
Lassen
E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo
Comment
CDA1523
Cirsium ochrocentrum var. ochrocentrum
T. C. Fuller
1959-7-7
2737
Lassen
Honey Lake; M.A. Mallory prop. Richmond Rd., about 4 mi. SE of Susanville.
0
Comment
RSA186831
Cirsium undulatum
T. C. Fuller
1966-7-22
14981
Lassen
East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo.
Comment
CHSC7631
Cirsium vulgare
Beverley J. Wise
1968-8-23
16
Lassen
10 mi. N.W. of Susanville on the Las. Co. Rd. 201.
1798
Comment
CHSC92753
Clarkia gracilis subsp. gracilis
L. P. Janeway
2005-7-4
8465
Lassen
High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41.
1752
Comment
CHSC99129
Clarkia gracilis subsp. gracilis
Lowell Ahart; John Dittes
2008-6-19
14887
Lassen
Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber.
1578
Comment
JEPS88247
Clarkia gracilis subsp. gracilis
Vernon H. Oswald and Lowell Ahart
1996-6-17
7792
Lassen
ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, just sw of parking area at Devils Corral Trailhead); Modoc Plateau
1420
Comment
CHSC4876
Clarkia lassenensis
R. Carter
1967-6-23
546
Lassen
Growing 10 yds. off S side of road.
Comment
JEPS107812
Clarkia lassenensis
Lowell Ahart, John Dittes
2005-6-2
11951
Lassen
Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction
1512
Comment
POM260406
Clarkia lassenensis
C. L. Hitchcock
1940-5-26
6610
Lassen
Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River.
1372
Comment
JEPS90014
Clarkia purpurea subsp. quadrivulnera
Dean Wm. Taylor with Robert A. Price
1988-6-4
9770
Lassen
6 mi e of MacArthur (Fall River Valley along Highway 299 at crossing of Frazer Creek, Pit River Watershed); Fall River Valley, Highway 299
1036
Comment
CAS-BOT-BC164866
Clarkia rhomboidea
Louella Bass
1973-5-29
EV 63
Lassen
Elysian Valley
1325
Comment
CAS-BOT-BC440042
Claytonia perfoliata subsp. perfoliata
Louella Bass
1973-4-23
25
Lassen
Elysian Valley.
1325
Comment
JEPS83688
Cleome platycarpa
Staria S. Vanderpool and Richard Vanderpool
1986-6-8
1237 d
Lassen
3.5 mi n Hwy. 395 jct. with highway to Wendel (at Noble Emigrant Trail Historical Monument, Hwy 395)
1341
Comment
NY222746
Cleome platycarpa
N. H. Holmgren
1978-6-11
8928
Lassen
Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale.
1700
Comment
NY222826
Cleome platycarpa
G. Schoolcraft
1989-5-31
1891
Lassen
East end of Skedaddle Mtns. near stateline.
Comment
UC1393119
Cleome platycarpa
John L. Strother
1970-5-23
951
Lassen
about 6 mi n Honey Lake
1280
Comment
NY242101
Cleomella hillmanii
G. Schoolcraft
1989-5-31
1883
Lassen
3 mi. N. Wendel Rd. along Skedaddle Ranch Rd.
1463.0
Comment
CAS-BOT-BC423197
Cleomella parviflora
Arnold Tiehm
1980-5-29
5748
Lassen
North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel
1231
Comment
JEPS83689
Cleomella plocasperma
Staria S. Vanderpool and Richard Vanderpool
1986-6-8
1236 a
Lassen
0.5 mi w Wendel (on paved county road)
1196
Comment
RSA739646
Cleomella plocasperma
L. P. Janeway, Linus Gog
2008-8-2
9530
Lassen
Modoc Plateau just above th flats along the S side of Rusch Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line.
1349
Comment
CAS-BOT-BC423222
Cleomella plocasperma
Luella Bass
1980-6-16
s.n.
Lassen
Wendel
1221
Comment
SBBG66408
Collinsia childii
E. Rockwell
-Jun-1925
1023
Lassen
Eagle Lake
1554
Comment
CHSC36465
Collinsia parviflora
Heffrey R. Peek
1982-6-3
26
Lassen
Ca. .9 mi w of jct of forest service roads 5.16 and 5.17 over Black Mountain. Ca. 20 yds e of 5.16.
Comment
CHSC99505
Collinsia parviflora
Lowell Ahart; John Dittes
2008-6-20
14916
Lassen
About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
JEPS17613
Collinsia parviflora
Rimo Bacigalupi with G. Thomas Robbins
1955-7-20
5406
Lassen
4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadows, s end of Warner Mtns); Warner Mts., Modoc National Forest, Long Valley Meadows
2057
Comment
JEPS94700
Collinsia parviflora
Vernon H. Oswald and Lowell Ahart
1998-5-22
9126
Lassen
5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road)
1463
Comment
JEPS94834
Collinsia parviflora
Vernon H. Oswald and Lowell Ahart
1998-5-22
9126
Lassen
5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road)
1463
Comment
UC1023722
Collinsia parviflora
Francis W. Pennell
1940-6-9
25752
Lassen
7 mi n of Madeline (Route 395); Route 395
1615
Comment
CDA34520
Collinsia parviflora
B. Villegas
2011-5-26
s.n.
Lassen
Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139.
0
Comment
SBBG12810
Collinsia parviflora
A. I. Richardson
1961-5-30
5
Lassen
9 mi S of Eagle Lake
1402
Comment
SEINET10548283
Collinsia parviflora
Jeffrey Huber
1971-6-2
Huber 127
Lassen
Approx 30 mi n of susanville, on calif hwy 139, in basalt, pinus artemesia Juniper assoc.
1646
Comment
UC1032607
Collinsia torreyi var. torreyi
A. Simontacchi
1940-6-15
864
Lassen
1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest
1920
Comment
SBBG58193
Collomia grandiflora
E. Rockwell
-Jun-1925
802
Lassen
Eagle Lake
1554
Comment
SEINET12319536
Collomia grandiflora
N. E. Heiken
1978-1
87
Lassen
Lower Dry Lakes, E of Eagle L
1573
Comment
UCD18964
Collomia grandiflora
R. E. Francis
1965-7-7
6
Lassen
Lassen National Forest, Harvey Valley Allotment.
1737
Comment
UC1037277
Collomia tinctoria
Leo Whitney
1934-7-22
1749
Lassen
6 mi w lower end of Eagle Lake; Lassen National Forest, Antelope Mountain
1981
Comment
CAS-BOT-BC179604
Comandra umbellata subsp. pallida
G. Schoolcraft
1989-6-7
1908
Lassen
NW slope of Shaffer Mtn. near top
2011
Comment
CAS-BOT-BC286116
Conyza canadensis
John Thomas Howell
1974-7-8
50503
Lassen
Susanville
1295
Comment
UC1483855
Corallorhiza striata
G. Schoolcraft
1980-7-15
309
Lassen
w Bieber; Big Valley Mountain Timber Sale area
1798
Comment
JEPS74351
Cordylanthus maritimus subsp. canescens
L. R. Heckard, T. I. Chuang and R. Bacigalupi
1974-7-25
3769
Lassen
4.6 mi n U. S. 395 (along County route A-3 (near old school house, several mi w of Honey Lake); Honey Lake
1219
Comment
UC762620
Cordylanthus ramosus
R. F. Hoover
1940-10-5
4678
Lassen
Secret Valley
Comment
CAS-BOT-BC383108
Cornus sericea subsp. sericea
Andrew Townesmith; Karen M. Meyer
2007-7-20
839
Lassen
Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River
1429
Comment
CHSC68861
Cornus sericea subsp. sericea
Vernon Oswald; Lowell Ahart
1997-6-24
8611
Lassen
South of Susanville on the north of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary.
1889
Comment
CHSC83603
Crepis acuminata
L. P. Janeway
2001-6-28
7234
Lassen
High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD.
1955
Comment
CHSC93564
Crepis acuminata
Lowell Ahart; John Dittes
2005-6-2
11933
Lassen
Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction.
1498
Comment
JEPS107790
Crepis acuminata
Lowell Ahart, John Dittes
2005-6-2
11933
Lassen
Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction
1498
Comment
RSA699966
Crepis acuminata
L. P. Janeway
2001-6-20
7197
Lassen
Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain.
1510
Comment
UC581283
Crepis acuminata
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2314
Lassen
about a mi below summit; Black Mountain
1940
Comment
OBI75880
Crepis bakeri
Anthony Baniaga
2011-6-30
404
Lassen
Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE
1470
Comment
SEINET10474584
Crepis bakeri subsp. cusickii
Mary Susan Taylor
1982-5-29
Taylor 4562
Lassen
T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft.
1493
Comment
CAS-BOT-BC291552
Crepis intermedia
G. L. Stebbins; J. A. Jenkins
1937-7-10
2297
Lassen
Crest of range head of Stony Ridge west of Milford
1950
Comment
CHSC93561
Crepis intermedia
Lowell Ahart; John Dittes
2005-6-1
11918
Lassen
Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction.
1425
Comment
JEPS107848
Crepis intermedia
Lowell Ahart, John Dittes
2005-6-1
11918
Lassen
Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction
1425
Comment
UC581208
Crepis intermedia
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-8
2216
Lassen
just w ridge crest between Willow Creek Valley and Horse Lake
524
Comment Read comments Jul 18 2007
JEPS87521
Crepis modocensis
Vernon H. Oswald and Lowell Ahart
1993-6-28
5614
Lassen
on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn.
1798
Comment
UC581246
Crepis modocensis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2298
Lassen
w Milford (crest of range head of ridge); Stony Ridge
1930
Comment
CAS-BOT-BC291572
Crepis modocensis subsp. modocensis
G. L. Stebbins; J. A. Jenkins
1937-7-10
2277
Lassen
Diamond Mt.
2286
Comment
UC581270
Crepis modocensis subsp. subacaulis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2276
Lassen
Diamond Mt.; summit and e slope
Comment
CAS-BOT-BC376532
Crepis monticola
G. L. Stebbins, Jr.; J. A. Jenkins
1937-7-6
2193
Lassen
Susanville, just west of the town, on Inspiration Point
Comment
JEPS36426
Crepis monticola
W. L. Jepson
1910-6-10
4108
Lassen
King Creek
1524
Comment
UC76004
Crepis monticola
Milo S. Baker
July, 1894
Lassen
near Bieber; Big Valley, Vicker's Ranch
Comment
UC1136842
Crepis occidentalis
George A. Fischer and Irwin H. Johnson
1933-7-14
F 271
Lassen
Lassen <National> Forest
1752
Comment
UC31338
Crepis occidentalis
M. S. Baker and Frank Nutting
1894-7-2
Lassen
Dixey Mts.; s side
Comment
UC540880
Crepis occidentalis
David D. Keck and J. Clausen
1935-6-25
3759
Lassen
Susanville; just w of town
1340
Comment
UC581194
Crepis occidentalis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2303
Lassen
w Milford (crest of range head of ridge); Stony Ridge
1930
Comment
UC581198
Crepis occidentalis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-7
2197
Lassen
Inspiration Point Susanville (just w of town)
Comment
UC773984
Crepis occidentalis
L. R. Short and Wm. Gansberg
1936-7-7
S- 476
Lassen
Burgess Spring Experiment Station Lassen <National> Forest
1764
Comment
RSA647829
Crepis occidentalis
Marion P. Harthill
1971-6-21
209
Lassen
Noble Emigrant Trail Monument, Susanville
Comment
UC581289
Crepis occidentalis subsp. occidentalis
E. B. Babcock and G. L. Stebbins Jr.
1936-6-7
1748
Lassen
nw-facing slope of ridge e Red Rock
1600
Comment
CAS-BOT-BC290821
Crepis occidentalis subsp. pumila
G. L. Stebbins, Jr.; J. A. Jenkins
1937-7-15
2362 A
Lassen
In Big Valley 2 miles west of Adin
1060
Comment
CAS-BOT-BC290823
Crepis occidentalis subsp. pumila
Elmer I. Applegate
1934-5-4
8915
Lassen
South of Secret Valley
Comment
POM203850
Crepis occidentalis subsp. pumila
J. T. Howell
1934-6-10
11872
Lassen
Janesville
Comment
UC1542943
Crocidium multicaule
G. Schoolcraft
1987-4-29
1686
Lassen
Ash Valley RNA
1554
Comment
CHSC23441
Cryptantha
K. R. Stern; D. B. Joley, J. G. Geschke
1974-6-23
5840
Lassen
Ca. 1 mi se of Ravendale on w side of Hwy. 395.
1618
Comment
UC1537698
Cryptantha
Gordon H. True Jr.
1938-7-9
909
Lassen
near Termo
1524
Comment
CAS-BOT-BC189240
Cryptantha
John Thomas Howell
1977-6-22
52403
Lassen
N end of Eagle Lake
1584
Comment
SBBG19764
Cryptantha affinis
C. B. Hardham
1961-6-17
7505
Lassen
Baxter Crk, S of Susanville
Comment
UC526167
Cryptantha affinis
John Thomas Howell
1934-7-10
12545
Lassen
Long's Well
Comment
SEINET8518912
Cryptantha ambigua
R. R. Halse
2004-7-8
6616
Lassen
Along State Highway 139, ca 6 miles N of Eagle Lake.
1710
Comment
UCD55276
Cryptantha circumscissa
Ellen Dean
2006-5-15
3091
Lassen
East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields.
1245
Comment
SDSU20525
Cryptantha echinella
Nuri Benet-Pierce, John P. Pierce
2012-7-14
526
Lassen
Diamond Mountain.
2023
Comment
UC1063944
Cryptantha echinella
H. P. Hagge
1929-9-11
24
Lassen
Logon Mtn. Eagle Lake Quad.
1828
Comment
CHSC75468
Cryptantha humilis
Vernon H. Oswald; Lowell Ahart
1999-6-19
9743
Lassen
Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo.
1353
Comment
CHSC47980
Cryptantha intermedia
Vernon Oswald
1986-6-15
2113
Lassen
Hwy 36, 15.0 mi e of Plumas-Lassen Co. line, 3.5 mi e of Fredonyer Pass.
1508
Comment
UC1249274
Cryptantha intermedia
Arthur Cronquist and Arthur H. Holmgren
1959-6-17
8480
Lassen
1 mi s Ravendale (40 mi ne of Susanville)
1615
Comment
JEPS124571
Cryptantha intermedia var. grandiflora
1964-7-1
67
Lassen
Collected 17.6 mi. north of Susanville on highway 139 near ditch. about 4 meters on west side of road from pavement.
Comment
UCD119960
Cryptantha muricata
G. Schoolcraft
2000-6-19
2903
Lassen
West of Cold Springs Valley.
Comment
JEPS94701
Cryptantha pterocarya
Vernon H. Oswald and Lowell Ahart
1998-5-22
9112
Lassen
5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0;.6 mi e of Fort Sage Road); Fort Sage Mountains
1402
Comment
CHSC71075
Cryptantha pterocarya var. pterocarya
Vernon H. Oswald; Lowell Ahart
1998-5-22
9112
Lassen
Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle.
1402
Comment
NY1111892
Cryptantha pterocarya var. pterocarya
G. Schoolcraft
1982-4-29
635
Lassen
Amedee Canyon
1280
Comment
UC1587053
Cryptantha torreyana
G. Schoolcraft
1991-7-30
2193
Lassen
e side Widow Mountain
1889
Comment
CHSC27582
Cryptantha watsonii
N. E. Heiken
1978-6-27
54
Lassen
SE end of Eagle Lake, near Eagle Lake Field Station.
1554
Comment
RSA262506
Cuscuta approximata
Lee Smith
1975-9-4
s.n.
Lassen
A1 Blickenstaff Farm, near Honey Lake, 3 miles south of Janesville.
Comment
JEPS124897
Cuscuta pentagona
Peter Schultz
1967-7-11
67
Lassen
2 miles north of Doyle.
Comment
CHSC112187
Cymopterus terebinthinus var. californicus
Dean Wm. Taylor
2012-6-7
f 21237
Lassen
Diamond Mountains; Gold Run Road 0.3 miles North of the Crest.
1950
Comment
RSA0049616
Cymopterus terebinthinus var. californicus
Dean Wm. Taylor
2012-6-7
21237
Lassen
Diamond Mountains; Gold Run Road 0.3 miles North of the crest
1950
Comment
UC1587038
Cynoglossum occidentale
G. Schoolcraft
1991-7-30
2192
Lassen
Bear <Sring> on n. side of widow Mt.
1780
Comment
CHSC60861
Cyperus squarrosus
Vernon H. Oswald; Lowell Ahart
1993-6-28
5624
Lassen
N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. On the bed of a small branch of Pine Creek
1737
Comment
SEINET3895836
Damasonium californicum
Arnold Tiehm, Gary Schoolcraft
1984-8-14
9245
Lassen
Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0
1698
Comment
UC1731161
Damasonium californicum
Dean W. Taylor
1974-6-14
3714
Lassen
on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd. Poison Lake; Modoc Plateau
1615
Comment
UC527
Damasonium californicum
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3335
Lassen
Honey Lake Valley, Susan R.
1219
Comment
UCD169624
Damasonium californicum
R. F. Thorne; Larry E. DeBuhr
1975-8-22
46995
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line.
1615
Comment
CAS-BOT-BC445519
Damasonium californicum
C. L. Hitchcock
1940-5-26
6646
Lassen
Overflow of Pitt River, 1 mile west of Bieber.
Comment
POM260301
Damasonium californicum
C. L. Hitchcock
1940-5-26
6646
Lassen
Overflow of Pitt River, 1 mile W of Bieber
Comment
UCD21047
Damasonium californicum
E. Bortiri
2002-7-19
WFC 83
Lassen
Bear Valley Reservoir, Rd 35N08 to Long Valley from Hwy 44, Lassen Co.
Comment
UC53341
Danthonia californica
M. S. Baker and Frank Nutting
1894-7-2
Lassen
Pine Creek
Comment
UC506937
Danthonia californica var. americana
George A. Fischer and Irwin H. Johnson
1933-7-12
F 236
Lassen
Patterson Flat Lassen National Forest
1737
Comment
UCD60727
Danthonia californica var. americana
F. C. Raney
1966-6-25
s. n.
Lassen
Harvey Valley, Lassen National Forest.
Comment
UCD60868
Danthonia californica var. americana
Mrs. Austin
1894-6-1
295
Lassen
Lassen Creek.
Comment Read comments Jul 11 2013
CAS-BOT-BC192327
Danthonia unispicata
Parkison
1916-6-10
15
Lassen
Lassen National Forest. Harvey Valley
1676
Comment
UC1567411
Deinandra lobbii
G. Schoolcraft
1989-7-24
1997
Lassen
w Hayden Hill Mine (along road); Susanville
1737
Comment
CAS-BOT-BC291777
Deinandra lobbii
John Thomas Howell
1934-7-3
12380
Lassen
Big Valley near Bieber
Comment
RSA0005299
Delphinium armeniacum
A. A. Heller
1938-6-4
15149
Lassen
1 mile east of Fredonyer Pass on hwy 36.
1707
Comment
HSC79826
Delphinium depauperatum
William Rothstrom
1975-6-9
Lassen
Near Day, 1.0 mi. E of large cinder pit mine
1280
Comment
CAS-BOT-BC9946
Delphinium nudicaule
Mrs. Baldwin
1928-5-10
N. S.
Lassen
Coyote Flat.
Comment
UC1143008
Delphinium nudicaule
August L. Hormay
1934-5-11
Lassen
4 mi nw Hall's Flat; Lassen National Forest
1676
Comment
CAS-BOT-BC116054
Delphinium nuttallianum
Elmer Ivan Applegate
1929-6-21
5780
Lassen
Kelley's Camp, Warner Valley, Mt. Lassen region
Comment
JEPS107808
Delphinium nuttallianum
Lowell Ahart, John Dittes
2005-6-2
11955
Lassen
Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction
1425
Comment
RSA716264
Delphinium nuttallianum
L. Ahart
2005-6-2
11955
Lassen
Along poor dirt road, 1 mile E of Anderson Ranch home, Long Valley, 4.5 miles air N of the intersection of Scott Road and Hwy 70, 6 miles NW of Hallelujah jct.
1426
Comment
CAS-BOT-BC116050
Delphinium nuttallianum
Mrs. E. C. Sutliffe
1957-7-21
863
Lassen
Drakesbad, Lassen Volcanic Park
Comment
HSC27055
Delphinium nuttallianum
John Pratt
1970-6-11
5
Lassen
Fredonyer Pass
1738
Comment
OBI75897
Deschampsia cespitosa
Anthony Baniaga
2011-8-17
508
Lassen
Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW
1978
Comment
CAS-BOT-BC194259
Deschampsia cespitosa subsp. cespitosa
Ray Hanson
1954-8-23
s.n.
Lassen
Near Jackey Lake
2112
Comment
CAS-BOT-BC194262
Deschampsia cespitosa subsp. cespitosa
John Thomas Howell
1959-9-23
34888
Lassen
Juniper Lake north end, Lassen Park
2057
Comment
HSC95293
Deschampsia cespitosa subsp. cespitosa
Gordon Leppig, Tony LaBanca
1997-6-28
511
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
RSA126933
Deschampsia cespitosa subsp. cespitosa
G. A. Fischer, I. H. Johnson
1933-7-14
F- 244
Lassen
Patterson Flat
1738
Comment
UC60239
Deschampsia cespitosa subsp. cespitosa
M. S. Baker and F. Nutting
July 1894
Lassen
Eagle Lake
1524
Comment
CAS-BOT-BC192740
Deschampsia danthonioides
A. A. Beetle
1941-6-28
2799
Lassen
10 miles west of Chester
Comment
CAS-BOT-BC192744
Deschampsia danthonioides
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-10
16328
Lassen
Along southern shore of Eagle Lake
Comment
UC1024890
Deschampsia danthonioides
Leo Whitney
1935-5-27
3124
Lassen
Bieber
Comment
UCD62516
Deschampsia danthonioides
L. Whitney
1935-5-27
3124
Lassen
Bieber.
Comment
CAS-BOT-BC201812
Deschampsia elongata
Clare B. Hardham
1971-8-22
18375
Lassen
Diamond Mountain
2346
Comment
POM313167
Deschampsia elongata
Malcolm A. Nobs, S. Galen Smith
1949-7-21
1058
Lassen
4 miles north of Madeline
Comment
UC1131561
Deschampsia elongata
A. Simontacchi
1940-7-3
919
Lassen
3.5 mi. w.-s.w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad.
Comment
UCD63522
Deschampsia elongata
Malcolm A. Knobs; S. Galen Smith
1949-7-21
1058
Lassen
4 miles N of Madeline.
Comment
POM203960
Descurainia incana subsp. incisa
J. T. Howell
1934-7-7
12476
Lassen
Harvey Valley.
Comment
UC1143009
Descurainia richardsonii
August L. Hormay
1934-5-11
Lassen
2.5 mi nw Hall's Flat; Lassen National Forest
1676
Comment
CAS-BOT-BC43486
Descurainia sophia
James Jokerst
1983-5-31
1790
Lassen
Near Madeline Plains.
1583
Comment
CHSC99284
Descurainia sophia
Lowell Ahart; John Dittes
2008-6-20
14912
Lassen
On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
CAS-BOT-BC43484
Descurainia sophia
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-11
16334
Lassen
13.5 miles east of Susanville.
Comment
CAS-BOT-BC299811
Dieteria canescens var. canescens
Mrs. H. C. Cantelow
1940-10-5
s.n.
Lassen
About 1 1/2 mi. N.W. of Johnstonville, east of Sierra Nevada Mts.
Comment
HSC82268
Dieteria canescens var. canescens
Thomas W. Nelson, Jane P. Nelson
1980-7-6
5996
Lassen
Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley
1555
Comment
CHSC98341
Dieteria canescens var. shastensis
B. Castro; L. P. Janeway
2005-7-10
1504
Lassen
Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location.
1566
Comment
JEPS30487
Dieteria canescens var. shastensis
Peter H. Raven with Otto T. Solbrig
1958-6-15
13244
Lassen
5.7 mi w Westwood (on State Highway 36)
Comment
JEPS87533
Dieteria canescens var. shastensis
Vernon H. Oswald and Lowell Ahart
1993-6-28
5596
Lassen
Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake)
1734
Comment
UC86846
Dieteria canescens var. shastensis
T. S. Brandegee
Lassen
Comment
CAS-BOT-BC153679
Diplacus mephiticus
H. D. Ripley; R. C. Barneby
1943-6-13
5698
Lassen
South of Milford
1569
Comment
CAS-BOT-BC153682
Diplacus mephiticus
Margaret Williams; Steven Williams
1974-7-26
74 - L - 35
Lassen
Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70
1493
Comment
CHSC35128
Diplacus mephiticus
N. E. Heiken
1978-6-27
53
Lassen
SE side of Eagle L.
1554
Comment
SBBG22269
Diplacus mephiticus
C. B. Hardham
1961-6-16
Lassen
Gold Run Crk, S of Susanville
Comment
CAS-BOT-BC151428
Diplacus nanus
Doris Kildale Gillespie
1930-5-12
9354
Lassen
Between Susanville and Leavitt Lake
Comment
CHSC91302
Distichlis spicata
Lowell Ahart; John Dittes
2005-6-2
11922
Lassen
Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
Comment
UCD64387
Distichlis spicata
A. A. Beetle
1941-6-28
2807
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak.
Comment
SACT001016
Distichlis spicata var. stricta
Verne Grant, Irving Schneider
1947-9-5
Lassen
Rhizomatous, northwest shore of Eagle Lake
Comment
SEINET10929826
Distichlis spicata var. stricta
Alan A. Beetle
1941-6-28
Beetle 2807
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak, open meadow. Assoc. Stipa pulchra, Hordeum, Koeleria cristata.
Comment
UC444833
Dodecatheon alpinum
Franklin P. Nutting
Lassen
Pine Creek Northern California, Pine Creek
Comment
UC1951073
Dodecatheon conjugens
Debra Valov
2009-4-25
2009018
Lassen
Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299
Comment
UC1951077
Dodecatheon conjugens
Debra Valov
2009-4-25
2009014
Lassen
Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299
Comment
CHSC6281
Dodecatheon pulchellum
B. Anthony
1967-7-14
277
Lassen
One mi e of Silver Lake.
1950
Comment
CHSC12415
Downingia bacigalupii
Anne Linda Brisk
1969-6-26
30
Lassen
Growing in Papoose Meadow, 13.5 mi SW of ELBS.
1658
Comment
POM312397
Downingia bacigalupii
Verne Grant, Irving Schneider
1947-7-31
8209
Lassen
Irrigation ditch NE quarter of George Williams section 19, Madeline Plain.
Comment
JEPS124625
Downingia bacigalupii
Laurel Loeblich
1964-7-1
65
Lassen
Collected 17.6 mi. North of Susanville on Highway 1 in ditch on west side of road about 2 meters from road.
Comment
RSA505399
Downingia bacigalupii
Rimo Bacigalupi
1957-6-28
5999
Lassen
Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline.
1616
Comment
CHSC30606
Downingia bicornuta
T. M. Lane
1975-6-23
28
Lassen
50 m n of spring headwaters of Willow Cr; 3.2 km ese of Eagle Lake Field Station; 22.4 km n of Susanville.
1589
Comment
UCD149940
Downingia bicornuta
William Anderson
1963-6-21
s.n.
Lassen
Honey Lake Valley.
Comment
CHSC60887
Downingia bicornuta var. bicornuta
Vernon H. Oswald; Lowell Ahart
1993-7-8
5649
Lassen
Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake.
1709
Comment
UC1101473
Downingia bicornuta var. bicornuta
Herbert L. Mason and Verne Grant
1947-7-9
13291
Lassen
5 mi e Bieber
Comment
JEPS108502
Downingia bicornuta var. bicornuta
Lisa Schultheis
1995-6-27
221 -95
Lassen
E edge of Poison Lake. N on Pittville Rd. off of Rt. 44. E of Shasta/Lassen county line.
Comment
JEPS108509
Downingia bicornuta var. bicornuta
Lisa Schultheis
1995-6-27
223 -95
Lassen
Large vernal pool W of Champs Flat (W of Eagle Lake). Corner of 33N56Y and 33N06.
Comment
JEPS120848
Downingia cuspidata
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18727
Lassen
About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
JEPS19680
Downingia insignis
Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr.
1957-6-28
6000
Lassen
3.1 mi s Madeline (ditches along U.S. Highway 395); Madeline Plains
1615
Comment
RSA298985
Downingia insignis
Helen-Mar Wheeler
1952-7-11
s.n.
Lassen
South of Madeline.
Comment
SJSU3191
Downingia insignis
R. L. Fisher
1958-6-16
Lassen
6 mi S of Madeline, Madeline Plains
1615
Comment
HSC63957
Downingia insignis
Teresa Prendusi
1980-7-1
1124
Lassen
Champs Flat, 8 mi. W of N Eagle Lake.
1677
Comment
RSA574802
Downingia insignis
R. R. Halse
1975-6-20
1200
Lassen
Along county road 502, 2.3 miles N of Ravendale.
1614
Comment
SEINET10702760
Downingia insignis
David B. Dunn
1956-7-3
Dunn 11924
Lassen
Alkaline sink by roadside, extra runoff from Hwy. 395. 11 mi. S of Madeline.
Comment
CHSC23440
Downingia laeta
K. R. Stern; D. B. Joley, J. G. Geschke
1974-6-22
5805
Lassen
E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville.
Comment
POM222067
Downingia pulchella
W. C. Merrill
1892-08
s.n.
Lassen
Bieber.
Comment
JEPS97330
Drosera anglica
Vernon H. Oswald
1995-8-21
7216
Lassen
T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely
1859
Comment
CAS-BOT-BC401538
Drosera rotundifolia
G. Schoolcraft
1997-8-5
2648
Lassen
Along Robbers Creek near Robbers Spring
1798
Comment
UC1028268
Drymocallis lactea var. austiniae
A. Simontacchi
1940-6-6
825
Lassen
9.3 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad.
Comment Read comments Oct 7 2008
CHSC112411
Elatine
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18752 A
Lassen
Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC116195
Elatine
Lowell Ahart; John Dittes
2015-7-13
20295
Lassen
About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
JEPS123974
Elatine
Lowell Ahart, John Dittes
2015-7-13
20295
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
RSA772751
Elatine californica
R. F. Thorne, Larry E. DeBuhr
1975-8-22
47212
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line.
1616
Comment
CAS-BOT-BC113619
Eleocharis acicularis
George Wilson Gillett
1957-9-4
1128
Lassen
Widow Lake. East margin of lower lake, near inlet; in drying mud.
2072
Comment
UC1567360
Eleocharis bella
G. Schoolcraft
1989-7-18
1982
Lassen
S of Clarks Valley Road near Bucks Spring
1874
Comment
CAS-BOT-BC113563
Eleocharis bolanderi
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville.
Comment
CHSC112798
Eleocharis macrostachya
Lowell Ahart; John Dittes
2013-7-22
18848
Lassen
West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
JEPS121268
Eleocharis macrostachya
Lowell Ahart
2013-7-22
18848
Lassen
W margin of duck field, about 30 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
UC190417
Eleocharis macrostachya
M. S. Baker and Frank Nutting
1894-7-6
Lassen
Adobe Meadow, Dixey Valley
Comment
UC1142965
Eleocharis quinqueflora
A. L. Hormay
1941-6-25
19
Lassen
Burgess Spring Lassen National Forest
1676
Comment
UC1776676
Eleocharis quinqueflora
G. Schoolcraft
1995-5-23
2488
Lassen
Three Springs
1554
Comment
JEPS103218
Eleocharis quinqueflora
G. Schoolcraft
1995-5-22
2483
Lassen
Morgan Spring N of Skedaddle Mountains
1524
Comment
UCD62907
Elymus X saundersii
Beecher Crampton
1954-7-5
2061
Lassen
Along Hwy 36, 4.5 miles west of Susanville.
1432
Comment
SD71040
Elymus caput-medusae
Leo E. Wheeler
1960-6-15
Lassen
edge of valley plain, ca. 4 mi. se. of Susanville
Comment
CHSC60798
Elymus cinereus
Vernon H. Oswald; Lowell Ahart
1993-6-14
5543
Lassen
Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road.
1566
Comment
SEINET10521741
Elymus cinereus
Paul Gallian, David B. Dunn
1971-6-2
Gallian 490
Lassen
5 mi. S. of Milford near Honey Lake on U.S. Hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - Jeffrey Pine on mountain range to west at approximately the same altitude.
1250
Comment
SEINET10527886
Elymus elymoides
Paul Gallian, David B. Dunn
1971-6-2
Gallian 515
Lassen
6 mi N of Hallelujah Jct on US hwy 395, in Artemesia tridentata, Jeffery pine, along high ridge & in sandy wash.
1402
Comment
UC1133050
Elymus elymoides subsp. elymoides
A. Simontacchi
1940-6-13
858
Lassen
3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle
Comment
UC1136930
Elymus elymoides subsp. elymoides
George A. Fischer and Irwin H. Johnson
1933-7-12
F 214
Lassen
Lassen <National> Forest
1722
Comment
UC1136931
Elymus elymoides subsp. elymoides
L. R. Short and J. Warren
1936-6-29
S- 461
Lassen
Burgess Spr. Exp. Range Lassen <National> Forest
1820
Comment
UC773975
Elymus elymoides subsp. elymoides
L. R. Short and Wm. Gansberg
1936-7-9
S- 477
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1783
Comment
CHSC118823
Elymus elymoides var. californicus
L. P. Janeway; B Castro
2015-6-5
11762
Lassen
Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn.
1731
Comment
HSC22391
Elymus elymoides var. californicus
D. E. Anderson
1969-7-5
4996
Lassen
Freedonyer Pass, 15 mi. W of Susanville
1752
Comment
UC7793970
Elymus glaucus
L. R. Short and Wm. Gansberg
1936-7-3
S- 470
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1859
Comment Read comments Aug 1 2007
SEINET10554356
Elymus glaucus
R. Ondricek
1978-7-22
Ondricek 107
Lassen
1.2 mi e of paved road to the marina on Black Mt. road. T31N, R11E, sw quarter of Sec. 8, Antelope Peak Quadrangle.
1585
Comment
CAS-BOT-BC206732
Elymus glaucus subsp. glaucus
John Thomas Howell
1976-7-19
51977
Lassen
Gold Run Creek southwest of Susanville - Sierra Nevada
1386
Comment
UCD62368
Elymus glaucus subsp. glaucus
John Thomas Howell
1976-7-19
51976
Lassen
On Gold Run Creek southwest of Susanville.
1386
Comment
JEPS121262
Elymus repens
Lowell Ahart, John Dittes
2013-7-23
18894
Lassen
About 20 feet SW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
UCD62565
Elymus repens
J. V. Langdon
1957-7-1
Lassen
Susanville.
Comment
UCR7791
Elymus salinus
Marilyn Malin
1968-7-10
260
Lassen
Great Basin, south side of Hwy 395 at the Hurlong turnoff
1235
Comment Read comments Mar 9 2010
CDA31738
Elymus trachycaulus
T. C. Fuller
1963-7-15
10888
Lassen
2.9 miles southeast of Pittville, south of road to Little Valley
0
Comment
UC1037145
Elymus trachycaulus
Leo Whitney
1935-6-24
3306
Lassen
ca 13 mi w north end of Eagle Lake; Squaw Valley
Comment
UC60832
Elymus trachycaulus
M. S. Baker and Frank Nutting
1894-7-5
Lassen
mts. s Dixey Valley
Comment
UC70687
Elymus trachycaulus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Honey Lake Valley
Comment
CAS-BOT-BC204359
Elymus trachycaulus subsp. trachycaulus
G. Schoolcraft
1994-8-2
2396
Lassen
About 2 miles NW of Boot Lake
2438
Comment
CHSC29894
Elymus trachycaulus subsp. trachycaulus
Robin L. Ondricek
1978-8-2
113
Lassen
North edge of dam at Murrers Upper Meadow.
1548
Comment
UCD62671
Elymus trachycaulus subsp. trachycaulus
August L. Hormay
1929-5-30
Lassen
Forest Office in front of Susanville.
Comment
SEINET12755568
Elymus triticoides
F. H. Hillman
1897-7-12
s.n.
Lassen
Chat.
Comment
SEINET6657093
Elymus triticoides
Leo Whitney
1934-8-4
2128
Lassen
Sheepshead, ca. 10 miles northwest of north end of Eagle Lake, Lassen National Forest.; 0
1890
Comment
CHSC71123
Ephedra viridis
Vernon H. Oswald; Lowell Ahart
1998-5-22
9103
Lassen
Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle.
1371
Comment
HSC1311
Ephedra viridis
L. H. Myers
1963-4-14
35
Lassen
2 mi. S of Hwy. 395, Doyle
1372
Comment
UCR67446
Ephedra viridis
George K. Helmkamp
1990-9-23
B- 17
Lassen
Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36
1345
Comment
SEINET10738966
Epilobium angustifolium subsp. circumvagum
Andrew Townesmith, Karen M. Meyer
2007-7-20
Townesmith 838
Lassen
Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4.
1429
Comment
CHSC14185
Epilobium brachycarpum
M. S. Taylor
1974-7-10
279
Lassen
Ca. 50 ft w of road to Gallatin Beach, ca. 5 mi s of Gallatin Beach on Eagle Lake, ca. 10 mi nw of Susanville.
1524
Comment
CHSC25092
Epilobium brachycarpum
K. R. Stern
1967-7-1
2441
Lassen
Murrer Meadow Road, ca. 2.5 mi. SE of Eagle Lake Biology Station.
1554
Comment
JEPS121253
Epilobium brachycarpum
Lowell Ahart
2013-7-22
18845
Lassen
W margin of duck field, about 10 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
UC773909
Epilobium brachycarpum
L. R. Short and Wm. Gansberg
1936-8-11
S- 493
Lassen
Burgess Spring Experiment Range Lassen National Forest
1746
Comment
RSA0105583
Epilobium campestre
Lowell Ahart, John Dittes
2013-7-22
18850
Lassen
About 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
UC764398
Epilobium campestre
R. F. Hoover
1940-9-21
4602
Lassen
4 mi w Susanville
Comment
CDA20353
Epilobium densiflorum
H. Leach
August 1949
s.n.
Lassen
Modoc Plateau; Madeline Plain.
0
Comment
NY1000301
Epilobium glaberrimum var. fastigiatum
C. B. Hardham
1969-8-28
17438
Lassen
Granitic slope west of Janesville
Comment
JEPS87408
Epilobium oregonense
Vernon H. Oswald and Lowell Ahart
1993-8-3
5741
Lassen
just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp
1932
Comment
JEPS127276
Epilobium pallidum
Lowell Ahart, John Dittes
2016-7-13
21127
Lassen
60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
JEPS87409
Epilobium pallidum
Vernon H. Oswald and Lowell Ahart
1993-7-8
5673
Lassen
Halls Flat Rd (33N18) 1.4 mi ssw Pittville Rd (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, bed of vernal pool on e side of rd)
1694
Comment
JEPS127270
Epilobium torreyi
Lowell Ahart, John Dittes
2016-7-13
21126
Lassen
60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
CAS-BOT-BC57305
Equisetum laevigatum
Clare B. Hardham
1969-8-28
17458
Lassen
west of Janesville
Comment
CAS-BOT-BC174119
Eremogone aculeata
B. J. Hammerly
1941-6-20
50
Lassen
8 mi. S.-E. of Likely on Blue Lake road
1676
Comment
CAS-BOT-BC174121
Eremogone aculeata
M. S. Taylor; B. Hammond
1982-8-27
5056 A
Lassen
On ridge between Crystal and Adams Peaks, Diamond Mts, ca. 4 air mi sw of Constantia
2225
Comment
CAS-BOT-BC174189
Eremogone congesta var. congesta
Mrs. R. M. Austin; Mrs. Bruce
1898-6-1
2156
Lassen
[Madaline] Madeline Plains
Comment
CAS-BOT-BC174203
Eremogone congesta var. congesta
Louella Bass
1973-6-14
103
Lassen
Elysian Valley
1325
Comment
CAS-BOT-BC174201
Eremogone congesta var. congesta
Clarence R. Quick
1964-7-29
64 -88
Lassen
Blacks Mt. Experimental Forest
1798
Comment
SEINET12875575
Eremogone congesta var. subcongesta
John Thomas Howell
1977-1
52401
Lassen
North end of Eagle Lake
1585
Comment
CAS-BOT-BC159991
Eremothera boothii subsp. alyssoides
Arnold Tiehm
1980-5-29
5754
Lassen
North end of Honey Lake Valley, 2 air miles NW of Wendel
1231
Comment
CAS-BOT-BC159993
Eremothera boothii subsp. alyssoides
A. A. Heller
1938-6-23
15212
Lassen
North of Balls Canyon on U. S. Highway #395
Comment
CAS-BOT-BC159996
Eremothera boothii subsp. alyssoides
P. Monnet
1913-7-4
7951
Lassen
Hot Springs Peak, S.E. of Lassen County
1800
Comment
CHSC27718
Eremothera boothii subsp. alyssoides
Robert A. Schlising
1978-7-2
3308
Lassen
SE of Horse Lake, 15.5 mi SW of jct Hwy 395 and Horse L. Road, along the latter.
1545
Comment
UC1483823
Eremothera minor
G. Schoolcraft
1980-6-11
267
Lassen
w Wendel
1219
Comment
CHSC34596
Eriastrum signatum
Robert A. Schlising
1978-7-1
3298
Lassen
E of Eagle Lake, NE of Eagle L. Field Station. On lava flow from Black Mt.
1584
Comment
JEPS14047
Eriastrum signatum
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5417
Lassen
along Smoke Creek rd 6.8 mi e Highway 395 (s edge of valley); Secret Valley
Comment
JEPS69075
Eriastrum signatum
W. L. Jepson
1918-8-2
7757
Lassen
Beckwith Pass
1463
Comment
RSA0124148
Eriastrum signatum
R. R. Halse
2004-7-21
6669
Lassen
At junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford.
1274
Comment
CAS-BOT-BC515175
Eriastrum signatum
Rimo Bacigalupi; G. T. Robbins
1955-7-21
5417
Lassen
Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395
Comment
RSA0124149
Eriastrum signatum
Christopher Davidson
1975-6-7
2763
Lassen
1 mile E of Beckwourth Pass on Hwy 70.
1524
Comment
JEPS124583
Eriastrum sparsiflorum
J. Yamanaka
1965-7-12
123
Lassen
Highway 395, 2.6 miles No. of Milford Habitat.
Comment
UC1136849
Ericameria bloomeri
L. R. Short and J. Warren
1936-8-17
S- 497
Lassen
Burgess Spr. Exp. Range Lassen Forest
1767
Comment
CHSC12420
Ericameria nauseosa
Anne Linda Brisk
1969-6-19
3
Lassen
1/4 mi NE ELBS.
1554
Comment
CHSC23484
Ericameria nauseosa
Wayne O. Baum
1971-7-29
71 -57
Lassen
Slope of Gallatin Peak.
1981
Comment
CHSC30574
Ericameria nauseosa
Sori H. Shad
1970-6-19
37
Lassen
Found north of E.L.B.S. in front of the Library.
1524
Comment
CAS-BOT-BC298179
Ericameria nauseosa var. oreophila
John Thomas Howell
1924-8-13
s.n.
Lassen
Near Doyle
Comment
CAS-BOT-BC298182
Ericameria nauseosa var. oreophila
C. B. Wolf
1931-9-5
2401
Lassen
0.75 mile E of Termo
1645
Comment
CHSC65293
Ericameria nauseosa var. oreophila
Vernon H. Oswald; Lowell Ahart
1995-8-14
7181
Lassen
Modoc Plateau. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville. Along this section of highway.
1359
Comment
UC527346
Ericameria nauseosa var. oreophila
C. B. Wolf
1931-9-5
Lassen
3/4 mi e Termo
1645
Comment
CHSC66849
Ericameria nauseosa var. speciosa
Vernon H. Oswald
1996-10-3
8295
Lassen
Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. On the edge of highway at Secret Creek.
1402
Comment
UC1483819
Ericameria nauseosa var. speciosa
G. Schoolcraft
1980-10-8
359
Lassen
w side of Painters Flat
1716
Comment
CAS-BOT-BC293206
Ericameria suffruticosa
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50665
Lassen
Summit ridge of Diamond Mt.
2346
Comment
CHSC93247
Erigeron aphanactis var. aphanactis
John Dittes; Scott Chamberlain
2004-6-28
1008
Lassen
Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line.
1460
Comment
UC1561814
Erigeron aphanactis var. aphanactis
Barbara Ertter with Gary Schoolcraft
1987-6-16
7176
Lassen
on ne side Honey Lake (e of road over saddle on w side of range); Skeedaddle Mountains
1645
Comment
CHSC112184
Erigeron aphanactis var. congestus
Dean Wm. Taylor
2012-6-7
21229
Lassen
Flora of the Modoc Plateau. Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139.
1635
Comment
CAS-BOT-BC33472
Erigeron barbellulatus
Milo Samuel Baker; Franklin P. Nutting
1895-7-30
s.n.
Lassen
Silver Lake
Comment
JEPS94521
Erigeron bloomeri
Vernon H. Oswald and Lowell Ahart
1997-5-27
8486
Lassen
38.2 mi n of Susanville (e side of Highway 139 at a small farm pond,, 7.4 mi n of Eagle Lake Road); Highway 139
1627
Comment
SEINET10617398
Erigeron bloomeri
Billy Joe Cox
1971-6-2
Cox 2994
Lassen
6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon Pine, Jeffrey Pine along high ridge & in sandy wash.
1402
Comment
CHSC92714
Erigeron bloomeri var. bloomeri
L. P. Janeway; B. Castro
2005-7-10
8486
Lassen
Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge.
1993
Comment
GMDRC6952
Erigeron bloomeri var. bloomeri
J. M. Andre, T. La Doux, Senna & Elias Andre
2013-7-12
31427
Lassen
along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville.
1733
Comment
JEPS80680
Erigeron bloomeri var. bloomeri
L. R. Heckard and T. I. Chuang
1981-6-10
5532
Lassen
North Eagle Lake Campground Eagle Lake (nw corner of lake)
1524
Comment
HSC63773
Erigeron bloomeri var. bloomeri
Teresa Prendusi
1980-5-22
1128
Lassen
Shafer Mtn, near top
1982
Comment
RSA636042
Erigeron bloomeri var. bloomeri
Michael A. Vincent
1999-6-9
8583 b
Lassen
Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield.
1524
Comment
SEINET11826499
Erigeron bloomeri var. bloomeri
Unknown
1967-1
545
Lassen
10 yds off S side road
Comment
CAS-BOT-BC297146
Erigeron concinnus var. concinnus
John Thomas Howell
1934-7-6
12439
Lassen
Harvey Valley
Comment
CAS-BOT-BC295979
Erigeron divergens
Clare B. Hardham
1969-8-28
17421
Lassen
West of Janesville, Sierra Nevada
Comment
CHSC65297
Erigeron divergens
Vernon H. Oswald; Lowell Ahart
1995-8-14
7193
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small stream, N of Susanville.
1676
Comment
CHSC91207
Erigeron divergens
Lowell Ahart; John Dittes
2005-6-2
11924
Lassen
Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
Comment
JEPS127271
Erigeron divergens
Lowell Ahart, John Dittes
2016-7-13
21106
Lassen
200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
JEPS97306
Erigeron divergens
Vernon H. Oswald and L. Ahart
1995-8-14
7193
Lassen
T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville
1676
Comment
UC1924196
Erigeron divergens
Debra Valov
2005-8-20
2005234
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1274
Comment
CAS-BOT-BC296846
Erigeron divergens
John Thomas Howell
1973-7-10
49773
Lassen
Near Westwood, Sierra Nevada
1554
Comment
RSA339143
Erigeron divergens
Margaret J. Williams
1984-6-16
84- 31 -1
Lassen
Doyle Grade, County Hwy. 331, 2.6 miles W of Doyle.
Comment
SEINET8667206
Erigeron divergens
M. J. Williams
1984-6-16
84- 31 -1
Lassen
Doyle grade, County Hwy 331, 2.6 mi W of Doyle
Comment
CHSC60816
Erigeron eatonii var. plantagineus
Vernon H. Oswald; Lowell Ahart
1993-6-14
5505
Lassen
Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake.
1728
Comment
RSA0049606
Erigeron eatonii var. plantagineus
Dean Wm. Taylor
2012-6-6
21226
Lassen
ca. 5 air miles West of Susanville, site is 1 mile due north of the junction of Highway 44 and Highway 36
1877
Comment
UCD131889
Erigeron eatonii var. plantagineus
Jack Major
1966-6-24
s.n.
Lassen
Long Valley, 3 miles airline southwest of Patterson Guard Station, northeastern county.
2087
Comment
UC584370
Erigeron elegantulus
E. B. Babcock, G. L. Stebbins Jr.
1936-6-8
1787
Lassen
roadside about 5 mi n Termo
1371
Comment
POM32996
Erigeron filifolius
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville.
1524
Comment
UC87694
Erigeron filifolius
T. S. Brandegee
1892-6-26
Lassen
Milford
Comment
UCR244069
Erigeron filifolius var. filifolius
Jim Andre, G. L. Clifton
1993-6-9
19695
Lassen
Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary
1631
Comment
CAS-BOT-BC295180
Erigeron inornatus
Clarence R. Quick
1964-8-5
64 -97
Lassen
Cal Mt. east of Poison Lake
1767
Comment
CAS-BOT-BC295184
Erigeron inornatus
John Thomas Howell; Gordon H. True
1973-8-1
50157
Lassen
Gold Run Creek road south of Susanville, Diamond Range
1584
Comment
UC584244
Erigeron lassenianus var. lassenianus
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-9
2264
Lassen
bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties)
Comment
CAS-BOT-BC295472
Erigeron lassenianus var. lassenianus
Parkison
1916-6-21
40
Lassen
Lassen National Forest. Near Patterson Cabin
1706
Comment
JEPS41565
Erigeron linearis
F. W. Peirson
1926-6-24
6855
Lassen
Madeline Plain
Comment
RSA0049610
Erigeron linearis
Dean Wm. Taylor
2012-6-7
21231
Lassen
Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139
1635
Comment
RSA713117
Erigeron linearis
L. P. Janeway, B. Castro
2005-7-10
8485
Lassen
Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge.
1993
Comment
CAS-BOT-BC295959
Erigeron philadelphicus
Marcus E. Jones
1897-6-30
s.n.
Lassen
Susanville, 4 miles below Eagle Lake
1524
Comment
RSA768024
Erigeron pumilus subsp. intermedius
L. Ahart, John Dittes
2010-7-31
16986
Lassen
About 3300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin.
1521
Comment
CHSC89730
Erigeron pumilus var. intermedius
L. P. Janeway
2004-6-26
8163
Lassen
High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest.
1767
Comment
JEPS89669
Erigeron pumilus var. intermedius
Dean Wm. Taylor with Glenn Clifton
1990-6-12
10883
Lassen
Ash Valley along Ash Creek at the crossing of Road 527 (Forest Road 39N08), Modoc Plateau Ash Creek; Modoc Plateau, Ash Valley, Ash Creek
1554
Comment
UC1118181
Erigeron pumilus var. intermedius
A. Simontacchi
1940-6-30
906
Lassen
2.2 mi ene of Ebey Lake; Halls Flat Quad.
1699
Comment
UC1536739
Erigeron pumilus var. intermedius
G. H. True Jr.
1936-6-27
558
Lassen
near top of Hot Spring Mountain
1828
Comment
UC468919
Erigeron pumilus var. intermedius
Franklin P. Nutting
Lassen
Big Valley Northern California, Big Valley
Comment
UC506996
Erigeron pumilus var. intermedius
George A. Fischer and Irwin H. Johnson
1933-7-12
F 209
Lassen
Grass Valley
1700
Comment
UC762677
Eriogonum baileyi
R. F. Hoover
1940-10-1
4649
Lassen
Johnstonville
Comment
SEINET3836451
Eriogonum baileyi var. baileyi
W. L. Jepson
1918-8-2
7772
Lassen
Beckwith Pass
1463
Comment
NY399607
Eriogonum baileyi var. baileyi
E. K. Balls
1952-10-10
18139
Lassen
5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas
1280.2
Comment
CAS-BOT-BC244039
Eriogonum baileyi var. praebens
R. F. Hoover
1940-10-5
4673
Lassen
Between Shaffer Mt. and Warren Peak
Comment
NY242909
Eriogonum caespitosum
A. A. Heller
1938-6-23
15216
Lassen
Between Secret Valley and Ravendale. U.S. Highway #395.
1524.0
Comment
CAS-BOT-BC241831
Eriogonum caespitosum
A. A. Heller
1938-6-23
15216
Lassen
On U. S. Highway #395, south of Ravendale
Comment
CAS-BOT-BC241833
Eriogonum caespitosum
Elmer I. Applegate
1897-6-3
894
Lassen
South of Madeline Plains
Comment
CAS-BOT-BC241836
Eriogonum caespitosum
A. A. Heller
1938-6-23
15216
Lassen
Between Secret Valley and Ravendale, on U. S. Highway #395
1524
Comment
RSA616540
Eriogonum cernuum var. cernuum
G. R. Ballmer
1993-7-31
s.n.
Lassen
Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border
Comment
RSA176183
Eriogonum collinum
Noel Holmgren, James L. Reveal
1964-8-22
1723
Lassen
48 miles northeast of Susanville, 4 miles south of Ravendale
Comment
RSA236684
Eriogonum collinum
A. J. Cronquist, A. H. Holmgren
1959-6-17
8478
Lassen
1 mile south of Ravendale, 40 miles NE of Susanville
1616
Comment
SEINET5328978
Eriogonum collinum
N. H. Holmgren, James Lauritz Reveal
1964-8-22
1723
Lassen
48 miles northeast of Susanville, 4 iles south of Ravendale,
Comment
UCD99875
Eriogonum douglasii
John Thomas Howell; Gordon H. True, Wayne Dakan
1974-7-30
50662
Lassen
summit ridge of Diamond Mt.
2286
Comment
CAS-BOT-BC246498
Eriogonum douglasii var. meridionale
H. D. Ripley; R. C. Barneby
1943-6-13
5712
Lassen
South of Johnstonville
1325
Comment
SEINET5330338
Eriogonum inflatum var. inflatum
F. B. Headley
1915-5-28
s.n.
Lassen
Honey Lake.
Comment
NY281810
Eriogonum maculatum
N. H. Holmgren
1964-8-22
1724
Lassen
35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395.
Comment
OBI76908
Eriogonum marifolium
Anthony Baniaga
2011-7-9
438
Lassen
Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE
1723
Comment
NY572524
Eriogonum microthecum var. schoolcraftii
G. Schoolcraft
1982-7-20
807
Lassen
Lower slopes of Wagner Canyon
1402.1
Comment
NY803459
Eriogonum microthecum var. schoolcraftii
G. Schoolcraft
2003-9-8
2947
Lassen
About 1 mile south of Constantia, CA west of Highway 395
1421
Comment
JEPS127634
Eriogonum nudum
Alejandro Brambila, Michael Dolan
2016-7-28
CA 320 -154
Lassen
Likely Mtn. on road 171. Collecting site is a 100-300 m before reaching the Forest Service Boundary.
Comment
JEPS128413
Eriogonum nudum
Catherine Bauer with Ellen Bauer Benson
2017-8-16
19
Lassen
South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground.
Comment
CHSC105258
Eriogonum nudum var. nudum
Lowell Ahart; John Dittes
2010-7-31
16983
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
JEPS117570
Eriogonum nudum var. nudum
Lowell Ahart, John Dittes
2010-7-31
16983
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1520
Comment
OBI76957
Eriogonum nudum var. nudum
Anthony Baniaga
2011-7-5
420
Lassen
Lassen Natl Forest, e of Willard Crk. Fredonyer Pass quad. T29NR10E sec 25 NE of NW
1485
Comment
CHSC27645
Eriogonum nudum var. pubiflorum
Jerry Snodgrass
1978-7-10
47
Lassen
Coleman L., SE of Eagle L.
1962
Comment
CHSC67061
Eriogonum nudum var. pubiflorum
Willis Ball
1969-6-27
50
Lassen
Found about 50 yds. S. of Gallatin Beach. Growing beside Gallatin Beach Parking Lot.
1561
Comment
JEPS126464
Eriogonum nudum var. pubiflorum
Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky
2015-8-27
CA 350 -070
Lassen
North on Highway 139 to Antelope Grade.
Comment
UC1137674
Eriogonum nudum var. pubiflorum
L. R. Short and Wm. Gansberg
1936-7-3
S- 474
Lassen
Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range
1798
Comment
CAS-BOT-BC269925
Eriogonum nudum var. pubiflorum
Barrett Anderson
1986-7-9
3129
Lassen
Road to Day, about 2.4 km N of Rte 299
1065
Comment
RSA0030655
Eriogonum nudum var. pubiflorum
Anthony Baniaga
2011-8-3
484
Lassen
Lassen National Forest. Along Highway 44, S of 31N21
1800
Comment
CAS-BOT-BC266813
Eriogonum nummulare
John Thomas Howell
1951-8-20
28228
Lassen
Honey Lake Valley near Hurlong
1280
Comment
SEINET5330981
Eriogonum nummulare
A. Tiehm
1978-1
4767
Lassen
7.2 road miles NE of Doyle on road 327 to Flanigan. About 1.7 miles W of the Nevada line
1524
Comment
SBBG65173
Eriogonum ovalifolium
S. W. Hutchinson
-Jun-1925
Lassen
Eagle Lake to Caribou Lake
1828
Comment
CHSC64886
Eriogonum ovalifolium var. ovalifolium
Vernon H. Oswald; Lowell Ahart
1995-6-19
6889
Lassen
Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. On a slope on the s side of the road at Mud Flat.
1350
Comment
UC1523800
Eriogonum prociduum
Gary Schoolcraft
1982-6-29
745
Lassen
Ash Valley
1554
Comment
RSA713122
Eriogonum spergulinum var. reddingianum
L. P. Janeway, B. Castro
2005-7-10
8483
Lassen
Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 and 28N02) and Road 28N01.
1859
Comment
POM105202
Eriogonum sphaerocephalum
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CHSC57304
Eriogonum sphaerocephalum var. halimioides
Mary Meyer
1980-7-9
Lassen
One mile northwest of Horse Camp Spring. Meadow.
1706
Comment
CHSC64846
Eriogonum sphaerocephalum var. halimioides
Vernon H. Oswald
1995-6-26
6927
Lassen
Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp.
1670
Comment
UC1924212
Eriogonum sphaerocephalum var. halimioides
Debra Valov
2004-6-9
2004271
Lassen
Hwy 139 c. Mile marker 37
1650
Comment
CHSC6225
Eriogonum sphaerocephalum var. sphaerocephalum
A. Santos
1946-6-17
Lassen
Eagle Lake. Mt. Fredonyer summit.
2319
Comment
RSA0029191
Eriogonum strictum
John F. Emmel
1997-6-8
1491
Lassen
At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction.
1448
Comment
CAS-BOT-BC262742
Eriogonum strictum var. anserinum
H. D. Ripley; R. C. Barneby
1944-5-30
5965
Lassen
Secret Valley
1554
Comment
CHSC106067
Eriogonum strictum var. anserinum
Lowell Ahart; John Dittes
2010-7-31
16989
Lassen
About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1510
Comment
CHSC13455
Eriogonum strictum var. anserinum
J. Pitts
1972-6-22
248
Lassen
70 yds. n of Eagle Lake Biology Station.
Comment
CHSC93663
Eriogonum strictum var. anserinum
Lowell Ahart; John Dittes
2005-6-2
11984
Lassen
North side of the poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.8 miles (air) northwest of Hallelujah Junction.
1430
Comment
JEPS117571
Eriogonum strictum var. anserinum
Lowell Ahart, John Dittes
2010-7-31
16989
Lassen
About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1510
Comment
UC85813
Eriogonum strictum var. proliferum
T. S. Brandegee
1892-6-30
Lassen
Janesville
Comment
CAS-BOT-BC267816
Eriogonum umbellatum var. covillei
Annie M. Alexander; Louise Kellogg
1942-8-21
3356
Lassen
Below Golden Trout Resort, Cottonwood Creek, Cottonwood Lakes, southwest of Lone Pine, Sierra Nevada
Comment
JEPS85788
Eriogonum umbellatum var. modocense
Roy E. Buck, Robert A. Price
1988-6-26
1029
Lassen
subsidiary peak ca. 0.5 air km n main summit (ca. 30 air km nne of Susanville); Fredonyer Peak
2377
Comment
UC725728
Eriogonum umbellatum var. modocense
A. A. Heller
1938-6-23
15202
Lassen
w Susanville
Comment
UCD101457
Eriogonum umbellatum var. modocense
John Thomas Howell
1973-7-10
49772
Lassen
near Westwood.
1554
Comment
HSC17447
Eriogonum umbellatum var. modocense
J. Wendell Howe
1934-7-9
1295
Lassen
Cinder Cone, Lassen NP
Comment
CHSC93680
Eriogonum umbellatum var. nevadense
Lowell Ahart; John Dittes
2005-6-2
11980
Lassen
North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction.
1410
Comment
RSA65960
Eriogonum umbellatum var. nevadense
F. W. Peirson
1926-6-24
6848
Lassen
On Madeline Plain.
Comment
UC1137291
Eriogonum umbellatum var. nevadense
K. E. Bradshaw
1939-5-27
237
Lassen
Black Mt. Experimental Forest Plot 39-1 Lassen National Forest, Halls Flat Quadrangle
1752
Comment
UC85974
Eriogonum umbellatum var. nevadense
T. S. Brandegee
1892-6-25
Lassen
Honey Lake
Comment
POM105077
Eriogonum umbellatum var. polyanthum
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CHSC30597
Eriogonum vimineum
Marc Held
1972-6-22
5
Lassen
Approx. 500 yrds. north-east of E. L. B. S.
Comment
CHSC4953
Eriogonum vimineum
R. Carter
1967-6-27
561
Lassen
Growing ca. 10 yds off n side of rd., 1.75 mi w of Eagle Lake Biology Station.
1584
Comment
JEPS127353
Eriogonum vimineum
Lowell Ahart, John Dittes
2016-7-13
21132
Lassen
180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
RSA125290
Eriogonum vimineum
Peter H. Raven, Otto T. Solbrig
1958-6-17
13272
Lassen
Along Hwy 395, 19.0 miles south of Ravendale
Comment
SEINET11933856
Eriogonum vimineum
N. H. Holmgren, Holmgren, P. K.
1980-1
9493
Lassen
Rye Patch Canyon Rd, 3.4 km (2.1m) E of US Hwy 395, 14.5 km (9mi) airline distance SE of Ravendale
1700
Comment
HSC97608
Eriophorum gracile
Vernon H. Oswald, L. Ahart
1996-6-24
7888
Lassen
Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1) and 2.5 mi. S of Eagle Lake, Modoc Plateau
1634
Comment
CAS-BOT-BC300341
Eriophyllum
Ella Dales Cantelow
1941-5-22
s.n.
Lassen
N. of Litchfield. U.S. Hy 395. Lava Country
Comment
UC1136991
Eriophyllum lanatum var. achilleoides
L. R. Short and J. Warren
1936-6-29
S 459
Lassen
Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range
1822
Comment
UC1393123
Eriophyllum lanatum var. achilleoides
John L. Strother
1970-5-23
956
Lassen
about 6 mi n of Honey Lake
1280
Comment
UCR244036
Eriophyllum lanatum var. achilleoides
Jim Andre
1993-6-5
19706
Lassen
Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport
1256
Comment
OBI75879
Eriophyllum lanatum var. croceum
Anthony Baniaga
2011-6-29
402
Lassen
Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW
1500
Comment
CAS-BOT-BC301390
Eriophyllum lanatum var. grandiflorum
R. Carter
1967-6-23
538
Lassen
Along rd to Murrer's Meadow
1584
Comment
CAS-BOT-BC301528
Eriophyllum lanatum var. integrifolium
Ralph K. Gierisch
1968-7-11
3355
Lassen
Lassen National Forest. Highway 44
1737
Comment
SEINET3132728
Eriophyllum lanatum var. integrifolium
J. L. Strother
1970-5-23
956
Lassen
ca. 6 mi. N of Honey Lk.
1280
Comment
UC90245
Eriophyllum lanatum var. integrifolium
T. S. Brandegee
1892-7-26
Lassen
Milford
Comment
JEPS107866
Erodium cicutarium
Lowell Ahart, John Dittes
2005-6-2
11923
Lassen
Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction
1459
Comment
UC1487305
Eryngium alismifolium
Yusuf Sheikh and Lincoln Constance
1973-6-27
549
Lassen
4.3 mi S of Ravendale (on State Highway 395)
Comment
UC1508836
Eryngium alismifolium
Gary Schoolcraft
1984-7-31
1329
Lassen
ca. 1 mi. n. Ravendale Fire Station
1615
Comment
UC21010
Eryngium articulatum
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3374
Lassen
Honey Lake Valley
Comment
CAS-BOT-BC41510
Erysimum asperum
Geo. A. Fisher
1928-6-21
28
Lassen
Lassen Forest.
1615
Comment
SEINET8340800
Erythranthe floribunda
Unknown
2005-6-2
11970
Lassen
Long Valley, about 4 1/2 miles (air) northweast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction.
1408
Comment
CHSC106222
Erythranthe guttata
Arthur C. Barrett
1915-6-3
14
Lassen
Laufman Ranger Station.
1463
Comment
CAS-BOT-BC153609
Erythranthe moniliformis
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49410
Lassen
Elysian Valley, west of Janesville
1325
Comment
CHSC66268
Erythranthe pulsiferae
Vernon H. Oswald; Lowell Ahart
1996-6-24
7865
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In open woods on the W side of the meadow ca. 0.2 mi S of the cabins.
1633
Comment
CHSC60775
Erythranthe suksdorfii
Vernon H. Oswald; Lowell Ahart
1993-6-14
5523
Lassen
Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89).
1566
Comment
CAS-BOT-BC403146
Eschscholzia californica
Alice Eastwood; John Thomas Howell
1940-6-16
8344
Lassen
Janesville
Comment
UC1561401
Eschscholzia californica
Barbara Ertter
1987-7-24
7297
Lassen
ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved road)
1524
Comment
CDA3708
Euclidium syriacum
June McCaskill
1966-6-5
712
Lassen
Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin)
Comment
JEPS124751
Euphorbia serpillifolia
L. Fleckenstein
1967-7-12
71
Lassen
Collected 14.9 mi. south-east of Adin on Hwy 139.
Comment
UCD142787
Euphorbia serpillifolia
J. M. Tucker
1950-7-25
1974
Lassen
Road from Pittville, 35 miles northwest of Susanville.
Comment
NY1001166
Euphorbia spathulata
A. Tiehm
1984-6-7
8594
Lassen
Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield
1387
Comment
UC29863
Eurybia integrifolia
Milo S. Baker
1894-7-30
Lassen
Silver Lake
Comment
POM112027
Festuca idahoensis
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville.
1524
Comment
RSA0092308
Festuca idahoensis
Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre
2013-7-12
31434
Lassen
Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville.
1732
Comment
RSA647539
Festuca idahoensis
Marion P. Harthill
1972-6-17
822
Lassen
Madeline.
1677
Comment
UC1024704
Festuca idahoensis
Leo Whitney
1933-7-10
2140
Lassen
ca 25 mi w Eagle Lake (upper end); Lassen National Forest, Halls Flat
1737
Comment
UC1024834
Festuca idahoensis
Leo Whitney
1935-6-11
3224
Lassen
Camp 10, Fruit Grower's Supply Company Lassen National Forest
Comment
UC1026711
Festuca idahoensis
Leo Whitney
1935-6-23
3295
Lassen
Camp 10, Fruit Grower's Supply Company
Comment
UC60788
Festuca idahoensis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Long Valley Honey Lake Valley
Comment
UCD66162
Festuca occidentalis
L. Whitney
1935-6-27
3337
Lassen
Lassen National Forest. Camp 10, Fruit Grower's Supply Company.
Comment
CAS-BOT-BC278932
Festuca rubra
John Thomas Howell
1934-7-6
12458
Lassen
Harvey Valley
Comment
JEPS28299
Festuca rubra
George W. Gillett
1957-7-29
947
Lassen
between Butte Lake and Snag Lake; Lassen Volcanic National Park
1859
Comment
UCD66339
Festuca rubra
A. A. Beetle
1941-6-28
2801
Lassen
10 miles W of Chester.
1524
Comment
UC1130345
Floerkea proserpinacoides
Robert W. Gardner
1937-6-14
G 4
Lassen
Burgess Spring Experiment Range
1798
Comment
UC1523731
Fraxinus latifolia
Gary Schoolcraft
1981-7-14
508
Lassen
s of Pittville; Beaver Creek Area
1158
Comment
CHSC36488
Fritillaria atropurpurea
Theresa Costa
1982-6-5
39
Lassen
Along e slope Gallatin Mountain.
Comment
CAS-BOT-BC506180
Fritillaria pudica
E. K. Balls
1950-5-18
14768
Lassen
Ash Creek, above Ash Creek Public Camp, off road from Adin to Madeline
1615
Comment
RSA59761
Fritillaria pudica
E. K. Balls
1950-5-18
14768
Lassen
Above Ash Creek Public Camp., off rd. from Adin to Madeline.
1616
Comment
SEINET11615980
Galium boreale
C. G. Gulling
1905-1
1542
Lassen
Big Meadows
Comment
CDA42121
Galium boreale subsp. septentrionale
L. Ahart, John Dittes
2005-6-2
11981
Lassen
North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction.
Comment
POM68457
Galium mexicanum subsp. asperulum
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
UC585184
Galium multiflorum
E. B. Babcock and G. L. Stebbins Jr.
1936-6-7
1740
Lassen
e-facing slope of gully on mountain above Red Rock
1420
Comment
CDA42206
Galium trifidum
Gordon Leppig and T. LaBanca
1997-6-29
540
Lassen
Blue Lake Ranch; Modoc National Forest.
Comment
CHSC113000
Galium trifidum subsp. columbianum
Lowell Ahart; John Dittes
2013-7-23
18895
Lassen
Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC105244
Gayophytum diffusum subsp. diffusum
Lowell Ahart; John Dittes
2010-7-31
17020 A
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
JEPS117576
Gayophytum heterozygum
Lowell Ahart, John Dittes
2010-7-31
17025
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1520
Comment
UC1122567
Gayophytum heterozygum
H. P. Hagge
1929-9-12
26
Lassen
Logan Mtn. Eagle Lake Quadrangle
Comment
UC1122616
Gayophytum heterozygum
A. Simontacchi
1940-6-30
897
Lassen
2.6 mi s Ladder Butte; Lassen National Forest, Hall's Flat Quadrangle
Comment
UC20253
Gayophytum heterozygum
M. S. Baker and Frank Nutting
1894-7-12
Lassen
Pine Creek
Comment
HSC63969
Gayophytum humile
Teresa Prendusi
1980-7-1
1121
Lassen
Champs Flat, 8 mi. W of N Eagle Lake.
1677
Comment
RSA74475
Gayophytum ramosissimum
Milo S. Baker
1936-6-16
8364
Lassen
About 30 miles north of Susanville
Comment
POM204159
Gayophytum ramosissimum
J. T. Howell
1934-6-10
11843
Lassen
Near Plumas Junction
Comment
JEPS88543
Gentiana calycosa
Vernon H. Oswald and Lowell Ahart
1996-8-1
8119
Lassen
Forest Rd, 28N56 (D-Line) ca. 2 mi N of Cyer Mtn. Lookout SSW of Westwood
1737
Comment
JEPS31405
Gentiana newberryi
G. S. Crew and C. S. Robinson
1927-7-15
68
Lassen
Bogard Ranger Station, sw Lassen Co. Lassen Forest
1737
Comment
UC1037290
Gentianella amarella subsp. acuta
Leo Whitney
1934-7-24
1690
Lassen
ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest
1737
Comment
CHSC59088
Gentianopsis simplex
Vernon H. Oswald; Lowell Ahart
1992-8-25
5186
Lassen
Lassen Volcanic National Park. Grassy Creek on the S end of Snag Lake.
1851
Comment
CHSC92757
Geranium viscosissimum
L. P. Janeway
2005-7-4
8472
Lassen
High Cascade Range. Gap/saddle 3.8 air km west of Harvey Mountain, at junction of Roads 35N04, 33N08, and 33N85.
1852
Comment
JEPS61452
Geranium viscosissimum
Brown and Wieslander
1922-7-24
11
Lassen
Martin Springs Eagle Lake
Comment
RSA122288
Geum canescens
L. R. Short, J. Warren
1936-6-23
s.n.
Lassen
Burgess Spring Exp Range.
1765
Comment
CAS-BOT-BC143569
Geum triflorum
Clarence Quick
1963-7-12
63 -34
Lassen
Blacks Mountain Experimental Forest east of Halls Flat
1859
Comment
CHSC60847
Geum triflorum
Vernon H. Oswald; Lowell Ahart
1993-6-28
5603
Lassen
Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake.
1725
Comment
CHSC64851
Geum triflorum
Vernon H. Oswald
1995-6-26
6943
Lassen
Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley.
1542
Comment
CHSC89723
Geum triflorum
L. P. Janeway
2004-6-26
8155
Lassen
High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest.
1750
Comment
UC1127984
Geum triflorum
K. E. Bradshaw
1939-5-27
243
Lassen
Lassen National Forest, Black Mountain Experimental Forest, s end of Plot 39-4 Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest
1737
Comment
RSA122289
Geum triflorum var. ciliatum
K. e. Bradshaw
1939-5-27
25210
Lassen
Near S end of Black Mtn EF Plot 39-4.
1738
Comment
SBBG70512
Geum triflorum var. ciliatum
E. Rockwell
-Jun-1925
934
Lassen
Eagle Lake
1554
Comment
RSA0086587
Gilia
Bonnie C. Templeton
1938-4-15
s.n.
Lassen
Near Roscoe.
Comment
RSA91465
Gilia brecciarum
Verne Grant
1955-6-8
9669
Lassen
3.6 mi n of Halleluja Jct. on hwy 395.
1311
Comment
CHSC106676
Gilia inconspicua
B. Ignacio
2008-5-3
Lassen
Fort Sage Mountains.
1520
Comment
JEPS94830
Gilia inconspicua
Vernon H. Oswald and Lowell Ahart
1998-5-22
9107
Lassen
5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains
1371
Comment
CHSC11771
Gilia modocensis
Wayne O. Baum
1971-6-28
71 -4
Lassen
S. slope of Gallatin Peak.
2042
Comment
CAS-BOT-BC523867
Gilia modocensis
Doris Kildale Gillespie
1930-5-12
9326
Lassen
2 mi N of Susanville on road to Alturas
Comment
UC1562812
Gilia salticola
Barbara Ertter with Gary Schoolcraft
1987-6-16
7189
Lassen
on s side Hot Springs VABM (ne side Honey Lake, Skeedaddle Mountains); Skeedaddle Mountains, s side Hot Springs VABM
2286
Comment
JEPS96135
Glyceria borealis
Vernon H. Oswald and Lowell Ahart
1996-6-24
7872
Lassen
Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek
1633
Comment
UC1776715
Glyceria elata
G. Schoolcraft
1994-7-6
2354
Lassen
About 2 miles west of Boot Lake
2072
Comment
CHSC60922
Gratiola ebracteata
Vernon H. Oswald; Lowell Ahart
1993-7-8
5650
Lassen
Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake.
1709
Comment
CHSC64781
Grayia spinosa
Vernon H. Oswald
1995-5-24
6764
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of Amedee Mtns.
1249
Comment
HSC104131
Grayia spinosa
H. Chappel, J. Goldhammer
2002-5-30
- 2
Lassen
Southeast of Susanville.
1248
Comment
UC1136429
Grayia spinosa
C. W. Hanks
1934-9-25
88
Lassen
near the Plumas Nat'l Forest Long Valley; Sierraville Quad., Long Valley
Comment
CHSC60757
Gymnosteris parvula
Vernon H. Oswald; Lowell Ahart
1993-6-3
5485
Lassen
Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. In a meadow.
1731
Comment
SEINET3928294
Hackelia californica
Anthony Baniaga
2011-7-9
440
Lassen
Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0
1720
Comment
UC1587098
Hackelia californica
G. Schoolcraft
1991-7-30
2197
Lassen
e slope of Widow Mountain
1859
Comment
UC699734
Hackelia californica
Farris Farris
1936-6-15
Lassen
Eagle Lake Summit
1981
Comment
CAS-BOT-BC231154
Hackelia cusickii
G. Schoolcraft
1988-7-7
1810
Lassen
About 14 air miles NE of Ravendale
1798
Comment
CAS-BOT-BC231157
Hackelia cusickii
Mrs. A S. Baldwin
1927-5-19
s.n.
Lassen
Lava beds
Comment
CHSC98245
Hackelia cusickii
Allison Sanger
2003-6-25
Lassen
Near Road 33N13 in Halls Flat, approximately 8 air miles east-northeast of Old Station.
1706
Comment
CDA3149
Halogeton glomeratus
E. E. Fix
Jun 1949
Lassen
Western Pacific Railroad right-of-way on Nevada-California line. Near Herlong.
0
Comment
CHSC7712
Halogeton glomeratus
Jesse Langdon
1969-5-23
8
Lassen
Stacey - 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320.
1249
Comment
OBI4720
Halogeton glomeratus
T. C. Fuller
1962-8-28
9475
Lassen
Herlong Siding, Hoeny Lake Valley
Comment
UCD98893
Halogeton glomeratus
Les Berry; J. L. Myler, Beecher Crampton
1954-8-17
s.n.
Lassen
near Karlo.
Comment
UCD98902
Halogeton glomeratus
R. Tofsrud; J. M. Tucker
1950-7-26
1978
Lassen
Herlong Army Ordnance Depot, southeastern Lassen County.
Comment
GMDRC7736
Helianthus cusickii
J. M. Andre, G. Clifton
1993-6-1
33413
Lassen
Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn
1399
Comment
CHSC76090
Heliotropium curassavicum
Lowell Ahart; Vernon H. Oswald
1999-9-13
8219
Lassen
In a field, about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish.
1207
Comment
UC1483827
Heliotropium curassavicum
G. Schoolcraft
1980-7-10
303
Lassen
e. shore Eagle Lake
1554
Comment
JEPS107809
Hemizonella minima
Lowell Ahart, John Dittes
2005-6-2
11940
Lassen
Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction
1600
Comment
NY1082476
Hesperochiron californicus
A. Tiehm
1986-5-12
10348
Lassen
1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek.
1341.1
Comment
POM73736
Hesperochiron californicus
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat.
1524
Comment
SBBG6101
Hesperochiron californicus
H. and M. Dearing
1938-6-30
2230
Lassen
20 mi N of Susanville [Hwy 44]
Comment
UC124518
Hesperochiron californicus
T. S. Brandegee
1892-6-22
Lassen
Honey Lake
Comment
UC773897
Hesperochiron californicus
L. R. Short
1936-4-28
S- 330
Lassen
Harvey Valley Lassen Forest, Harvey Valley
1706
Comment
SEINET5498645
Hesperochiron californicus
D. E. Brix
1962-5-2
s.n.
Lassen
Spring 2 miles from Junction of Red Rock Rd. and Hwy 395
1433
Comment
JEPS1670
Hesperochiron pumilus
G. S. Crew and C. S. Robinson
1927-6-10
11
Lassen
<Norval> Flat near Westwood Junction; Lassen Forest
1747
Comment
UC1523712
Hesperolinon micranthum
Gary Schoolcraft
1981-6-25
478
Lassen
East Fork of Wellard Creek
1584
Comment
UC1601275
Hesperolinon micranthum
Leo Whitney
1934-7-8
1793
Lassen
open flat near Harvey Valley Spring (ca 14 mi w of Eagle Lake); Lassen National Forest
Comment
SJSU7861
Hesperolinon micranthum
V. Hardham
1965-7-12
127
Lassen
Willow Cr c. 13 mi SE of Adin (Siskiyou County) on State Rt 139
1463
Comment
UC1609506
Hesperostipa comata
Vernon H. Oswald and Lowell Ahart
1993-6-14
5542
Lassen
n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake
1566
Comment
UC593455
Hesperostipa comata
E. B. Babcock and G. L. Stebbins Jr.
1936-6-7
1743
Lassen
e-facing slope of gully on mountain above Red Rock
1420
Comment
CAS-BOT-BC310910
Heterotheca villosa
Margaret Williams
1974-7-27
74- 61 -61
Lassen
West of Hwy 395 and south of Hwy 70. Near Hallelujah Junction
1493
Comment
POM34557
Heterotheca villosa var. minor
F. H. Hillman
1897-7-12
s.n.
Lassen
Chat
Comment
CAS-BOT-BC312311
Hieracium
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville
1341
Comment
CHSC5213
Hieracium horridum
M. West
1946-7-12
Lassen
Silver Lake.
1981
Comment
HSC40172
Hieracium horridum
Thomas W. Nelson, Jane P. Nelson
1976-8-1
3124
Lassen
Lassen Volcanic National Park at Devestated Area
Comment
CAS-BOT-BC316040
Hieracium scouleri
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49465
Lassen
Elysian Valley west of Janesville, Sierra Nevada
1325
Comment
JEPS97327
Hieracium scouleri
Vernon H. Oswald
1995-8-21
7206
Lassen
T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely
1859
Comment
CHSC105247
Hieracium scouleri var. nudicaule
Lowell Ahart; John Dittes
2010-7-31
16973
Lassen
About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) southeast of Adin.
1508
Comment
CHSC66720
Hieracium scouleri var. nudicaule
Vernon H. Oswald; Lowell Ahart
1996-8-1
8129
Lassen
Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road.
2011
Comment
CHSC66245
Hippuris vulgaris
Vernon H. Oswald; Lowell Ahart
1996-6-24
7885
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Localized colony in shallow water in marshy meadow on the E side of Papoose Creek N of the springs.
1633
Comment
UC1191967
Hippuris vulgaris
Malcolm A. Nobs and S. Galen Smith
1949-8-20
1471 a
Lassen
1 mi. s. Milford (Honey Lake Valley); Honey Lake Valley
Comment
UCD170233
Holodiscus discolor var. glabrescens
K. M. Meyer; A. Townesmith
2007-7-23
150
Lassen
Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36.
1993
Comment
CHSC112406
Holosteum umbellatum subsp. umbellatum
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18728
Lassen
Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
POM352505
Hordeum arizonicum
A. A. Beetle
1941-6-28
s.n.
Lassen
6 mi south of Ravendale, Lower slopes of Observation Peak
Comment
JEPS28320
Hordeum brachyantherum subsp. brachyantherum
George W. Gillett
1957-7-29
951
Lassen
trail between Butte Lake and Snag Lake; Lassen Volcanic National Park, Butte Lake, Snag Lake
1859
Comment
SEINET10663525
Hordeum brachyantherum subsp. brachyantherum
Vernon H. Oswald, Lowell Ahart
1999-6-9
Oswald 9751
Lassen
T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area.
Comment
UC1136934
Hordeum brachyantherum subsp. californicum
George A. Fischer and Irwin H. Johnson
1933-7-12
F 232
Lassen
Patterson Flat Lassen National Forest, Patterson Flat
1737
Comment
UCD85908
Hordeum marinum subsp. gussoneanum
L. Whitney
1933-8-12
s.n.
Lassen
Black's Lake.
Comment
JEPS44570
Horkelia fusca subsp. tenella
Brown & Wieslander
1922-7-23
30
Lassen
Martin Sprs., Eagle Lake
Comment
HSC25727
Horkelia fusca var. tenella
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19181
Lassen
Harvey Valley near Cone Springs
Comment
CAS-BOT-BC537968
Horkelia tridentata var. flavescens
Alice Eastwood
1912-8-22
1872
Lassen
Morgan Spring, Butte Region
Comment
CAS-BOT-BC55478
Hornungia procumbens
Arnold Tiehm
1980-5-29
5749
Lassen
North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north northwest of Wendel.
1231
Comment
POM95279
Hornungia procumbens
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1524
Comment
CHSC30619
Hydrophyllum capitatum var. alpinum
Eric Miller
1975-6-24
10
Lassen
N. E. corner of Deans Meadow, 15 ft. off dirt road.
1956
Comment
JEPS87416
Hydrophyllum capitatum var. alpinum
Vernon H. Oswald and Lowell Ahart
1993-5-12
5378
Lassen
3.5 mi nw of A21 to Westwood (on n side of road and on e side of Canal crossing Hwy 44)
1729
Comment
UC1069096
Hydrophyllum capitatum var. alpinum
A. Simontacchi
1940-5-10
692
Lassen
4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad.
1752
Comment
RSA370316
Hymenolobus procumbens
A. Tiehm, Margaret J. Williams, Gary Schoolcraft
1986-5-12
10350
Lassen
1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek.
1341
Comment
POM95280
Hymenolobus procumbens
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1616
Comment
SJSU8059
Hypericum anagalloides
J. W. Tilden
1960-6-27
1523
Lassen
5 mi E of Westwood via Moonlight Rd
1524
Comment
CHSC5007
Hypericum formosum var. scouleri
L. G. Bennett
1967-7-8
123
Lassen
Murrers Meadow, near Eagle Lake.
1493
Comment
UC117500
Idahoa scapigera
T. S. Brandegee
1892-6-30
Lassen
Susanville
Comment
SEINET8887136
Iliamna bakeri
R. R. Halse
2004-1
6615
Lassen
Along State Hwy 139, ca 6 miles N of Eagle Lake
1710
Comment
UC1037223
Ipomopsis aggregata
Leo Whitney
1934-7-6
1591
Lassen
ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley
Comment
CHSC13883
Ipomopsis aggregata subsp. formosissima
S. Villard
1973-7-12
65
Lassen
Gallatin Peak.
1066
Comment
CHSC63410
Ipomopsis congesta subsp. congesta
V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin
1994-6-26
6354
Lassen
Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline.
1554
Comment
UC773903
Ipomopsis tenuituba
L. R. Short
1936-6-25
S- 412
Lassen
Burgess Spring Experiment Range
1865
Comment
CAS-BOT-BC69982
Isoetes bolanderi
John Thomas Howell
1960-8-23
36431
Lassen
Emerald Lake.
2468
Comment
UCD135760
Isoetes bolanderi
John Thomas Howell
1959-9-23
34891
Lassen
Juniper Lake campground, Lassen Park.
2057
Comment
RSA0025413
Isoetes nuttallii
Forrest Freund
2013-5-23
194
Lassen
HWY 44. Near pond on the south west side of the road, in open patches.
1716
Comment
CAS-BOT-BC324777
Iva axillaris
John Thomas Howell
1975-7-23
51394
Lassen
Susanville, Sierra Nevada
1295
Comment
HSC28862
Iva axillaris
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19298
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
SD64329
Iva axillaris
Darley F. Howe
1966-8-25
Lassen
41 miles south of Alturas on Highway 395.
1675
Comment
UC2062433
Ivesia baileyi var. baileyi
Barbara Ertter with Gary Schoolcraft
1987-6-16
7200
Lassen
Skeedaddle Mountains on NE side of Honey Lake; tuffaceous at head of Wendel Canyon.
Comment
CAS-BOT-BC148542
Ivesia paniculata
Barbara Kelly
1977-8-9
559
Lassen
Along dirt road from Adin 16 1/4 miles west of Madeline.
Comment
HSC75599
Ivesia paniculata
Thomas W. Nelson, Jane Nelson
1980-7-6
5984
Lassen
Ash Valley along Adin-Madeline Rd., 16 mi. E of Adin
1555
Comment
HSC77272
Ivesia paniculata
Barbara Kelly
1977-8-9
559
Lassen
Along dirt road from Adin, 16.25 mi. W of Madeline
Comment
RSA614443
Ivesia paniculata
M. L. Carlson
1996-6-11
s.n.
Lassen
16 miles southeast of Adin on County Road 527
Comment
SEINET3877716
Juncus bufonius
Arnold Tiehm, Jan Nachlinger; Gary Schoolcraft
1984-6-25
8824
Lassen
Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81.; 0
1829
Comment
UC1583258
Juncus bufonius
Noel H. Holmgren and Patricia K. Holmgren
1980-7-3
9467
Lassen
5.6 km (3.5 mi) s Madeline (along Highway 395); Madeline Plains
1620
Comment
CHSC99280
Juncus bufonius var. congestus
Lowell Ahart; John Dittes
2008-6-20
14958
Lassen
In meadow, around a new pond, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
UC1137590
Juncus confusus
A. Simontacchi
1940-7-3
918
Lassen
3.4 mi wsw Harvey Mtn. Lookout; Halls Flat Quad.
1828
Comment
RSA129410
Juncus dubius
H. S. Yates
1936-8-12
6080
Lassen
McKenzie Meadow.
1524
Comment
CHSC117203
Juncus hemiendytus var. hemiendytus
Lowell Ahart; John Dittes
2016-6-7
20991
Lassen
West edge of pond, 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
1289
Comment
CHSC114407
Juncus laccatus
Don Lepley
2014-6-17
Lassen
Lassen National Forest; Eagle Lake Ranger District. Location uncertain; near one of the forks of Baxter Cfreek, probably the northernmost one, along either Road 29N07 or downslope at the A-spur. SE1/4 of NE1/4 of Sec 5 of SW1/4 of NW1/4 of Sec 4.
1767
Comment
RSA325011
Juncus luciensis
A. Tiehm, Jan Nachlinger
1984-6-25
8824
Lassen
Rodeo Flat, 2.7 miles west of the state line on Buckhorn road from Ravendale to Hwy 81
1829
Comment
UC2489
Juncus mexicanus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3278
Lassen
Tule Confederacy Honey Lake Valley
Comment
CHSC29855
Juncus nevadensis
Kyle Brown
1978-7-10
95
Lassen
In meadow at the base of the dam in Murrers Upper Meadow.
1548
Comment
HSC95312
Juncus nevadensis
Gordon Leppig
1998-8-17
1041
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
RSA201265
Juncus nevadensis
J. T. Howell
1959-9-23
34884
Lassen
Lassen County: N end of Juniper Lake.
2058
Comment
UC1142942
Juncus nevadensis
A. L. Hormay
1941-6-18
3
Lassen
Little Harvey Valley Lassen National Forest
1676
Comment
UC1601784
Juncus nevadensis
Baker and Nutting
1894-7-3
Lassen
Dixie Creek
Comment
UCD108039
Juncus occidentalis
Tim Kuhn
2006-7-26
76
Lassen
Eagle Lake Ranger District.
Comment
SEINET3881686
Juncus sphaerocarpus
Alice Eastwood, John Thomas Howell
1940-6-16
8339
Lassen
Janesville.; 0
Comment
CHSC106359
Juncus trilocularis
Lowell Ahart; John Dittes
2010-7-31
17026
Lassen
About 20 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
CHSC66417
Juncus trilocularis
Vernon H. Oswald; Lowell Ahart
1996-6-17
7805
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post.
1420
Comment
RSA0035254
Juncus trilocularis
Peter F. Zika
2008-7-14
23893
Lassen
S side of Route 44, SE end of Grays Valley near Lodgepole, Cascade Range Highlands.
1730
Comment
CHSC3494
Juniperus californica
Roger Jaegel
1966-5-14
152
Lassen
Located twenty-two miles north of Susanville, along the bank of Eagle Lake at C. S. C. Biological Station.
Comment
UCD133732
Juniperus californica
Grady L. Webster; with Bot. 102 class
1989-5-13
7703
Lassen
Scattered in sagebrush scrub on rolling slopes 2.5 mi E of Beckworth Pass.
1493
Comment
CHSC13798
Juniperus occidentalis
Cathy Crittenden
1970-7-8
26
Lassen
About 300 yds. From five corners on road to Mahogany Lake.
1767
Comment
CHSC66
Juniperus occidentalis
K. McKenzie
1928-4-10
Lassen
Near Bieber in Big Valley.
Comment
HSC1267
Juniperus occidentalis
L. H. Myers
1963-4-10
40
Lassen
1.0 mi. S of Janesville
1280
Comment
UCD133775
Juniperus occidentalis
John Thomas Howell; Gordon H. True
1973-8-1
50252
Lassen
5 miles from Susanville; dry hills on Gold Run Creek.
1310
Comment
UCD22742
Juniperus occidentalis
Todd Sloat
1988-6-4
16
Lassen
NE California. Pittville, CA.
1036
Comment Read comments Apr 29 2013
UCR1818
Juniperus occidentalis subsp. australis
Frank C. Vasek
1962-9-3
620903- 04
Lassen
Calif. Hwy 36, 3.6 mi west of the Ranger Station, west of Susanville
1524
Comment
RSA597842
Juniperus occidentalis var. australis
F. C. Vasek
1962-9-3
620903 -1
Lassen
State Highway 36, 3.6 miles west of Ranger Station, west of Susanville
1524
Comment
RSA302156
Juniperus occidentalis var. occidentalis
J. R. Shevock
1971-4-9
943
Lassen
Hwy 299
1372
Comment
UCR4284
Juniperus occidentalis var. occidentalis
Frank C. Vasek
1965-9-1
650901- 01
Lassen
On Karlo Road 3.6 mi north of the junction of Karlo Road & Litchfield Road, north of Susanville
1355
Comment
CHSC23328
Juniperus osteosperma
Mark Stopher
1976-1-11
30
Lassen
Ca. 52 miles south of Susanville on Hwy 395 then two miles east on Red Rock Road.
1328
Comment
UCR148843
Juniperus osteosperma
David A. Charlet
1993-7-13
1581
Lassen
Great Basin, Fort Sage Mountains at O.H.V. trailhead
1491
Comment
UCR3784
Juniperus osteosperma
Frank C. Vasek
1964-9-12
640912- 03
Lassen
Calif. Hwy 70 (alt. US Hwy 40), 1.6 mi west of its junction w/ US Hwy 395
Comment
CHSC77232
Kelloggia galioides
G. Schoolcraft
1997-6-26
2605
Lassen
Large knob W of Hwy 395 between Janesville and Milford.
1706
Comment
HSC69049
Kelloggia galioides
Gary Schoolcraft
1979-7-3
111
Lassen
4.3 mi. up the road from Observation Peak
2134
Comment
POM68596
Kelloggia galioides
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin's Ranch.
1463
Comment
RSA121074
Kelloggia galioides
G. A. Fischer, Irwin H. Johnson
1933-7-14
F- 255
Lassen
Lassen Forest.
1784
Comment
SJSU11548
Kelloggia galioides
J. W. Tilden
1960-6-27
1496
Lassen
Westwood
1554
Comment
UC1136752
Kelloggia galioides
George A. Fischer and Irwin H. Johnson
1933-7-14
255
Lassen
Lassen National Forest
1783
Comment
UC7408
Kochia americana
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3329
Lassen
Honey Lake Valley
1219
Comment
JEPS97318
Kochia scoparia
Vernon H. Oswald and L. Ahart
1995-8-14
7172
Lassen
T30N R15E center N side Sec. 15, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville
1348
Comment
JEPS107461
Koeleria macrantha
Lowell Ahart, John Dittes
2005-6-1
11860
Lassen
On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction
1448
Comment
CAS-BOT-BC271331
Koeleria pyramidata
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1615
Comment
UC891450
Kyhosia bolanderi
A. A. Heller
1937-9-1
15342
Lassen
about a mile e of Westwood
Comment
JEPS94084
Lactuca saligna
Vernon H. Oswald and Lowell Ahart
1998-9-8
9574
Lassen
Hwy. 299 at the R.R. overpass on e. side of Nubieber (near the hwy.)
1255
Comment
CHSC113011
Lactuca serriola
Lowell Ahart; John Dittes
2013-7-23
18887
Lassen
Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CAS-BOT-BC349842
Lactuca tatarica subsp. pulchella
Gary Schoolcraft
1986-9-4
1669
Lassen
Along n. shore of Eagle Lake 33-12-30
1554
Comment
CAS-BOT-BC341485
Lagophylla ramosissima
John Thomas Howell
1974-7-10
50527
Lassen
Elysian Valley
1325
Comment
POM204133
Lagophylla ramosissima
J. T. Howell
1934-6-10
11863
Lassen
Honey Lake Valley, 37 miles S of Susanville.
Comment
CDA8086
Lagophylla ramosissima
T. C. Fuller
1964-10-7
12692
Lassen
Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber.
0
Comment
CHSC71865
Lagophylla ramosissima subsp. ramosissima
Vernon H. Oswald; Lowell Ahart
1998-9-8
9575
Lassen
Hwy. 299 at the RR overpass on the east side of Nubieber.
1255
Comment
CHSC99304
Lamium amplexicaule
Lowell Ahart; John Dittes
2008-6-20
14962
Lassen
In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
CHSC64767
Lappula redowskii var. cupulata
Vernon H. Oswald
1995-5-24
6767
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road.
1219
Comment
JEPS114637
Lasthenia glaberrima
Lowell Ahart, John Dittes
2008-6-20
14901
Lassen
Sides of a vernal pool, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
JEPS120809
Lasthenia glaberrima
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18739
Lassen
Near a drainage filled with dirt from construction of a pond, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley
Comment
SBBG128882
Lasthenia glaberrima
L. Ahart, J. Dittes
2008-6-20
14901
Lassen
sides of a vernal pool, ca. 100 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber
1263
Comment
CHSC7669
Lathyrus brownii
Beverley J. Wise
1969-5-9
58
Lassen
10.5 mi West of Susanville on Forest service rd. no. 8246 off Hwy 36.
1615
Comment
SEINET11447828
Layia glandulosa
F. B. Headley
1915-5-28
s.n.
Lassen
Honey lake
Comment
UC1609230
Layia glandulosa
Vernon H. Oswald and Lowell Ahart
1993-6-14
5535
Lassen
Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake
1566
Comment
UC30620
Layia glandulosa
M. S. Baker and F. Nutting
1894-7-2
Lassen
Dixey Mts.
Comment
UCD55163
Layia glandulosa
Ellen Dean
2006-5-15
3051
Lassen
E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility.
1248
Comment
CDA42959
Lepidium chalepense
L. Ahart, John Dittes, Todd Sloat
2013-6-9
18786
Lassen
On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp.
Comment
UCD55157
Lepidium dictyotum
Ellen Dean
2006-5-15
3045
Lassen
E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility.
1247
Comment
NY76543
Lepidium latifolium
J. T. Howell
1975-7-23
51384
Lassen
Eagle Lake Lumber Company yard, Susanville
1295.4
Comment
CAS-BOT-BC89720
Lepidium latifolium
T. C. Fuller
1962-8-28
9478
Lassen
On east side of road, Highway 395 to Lichtenfield, 4.7 miles south of Ravendale, Madelaine Plains.
Comment
CHSC5238
Lepidium perfoliatum
L. Martin
1953-6-30
Lassen
Eagle Lake. E side of Honey Lake near Doyle.
1299
Comment
JEPS107842
Lepidium perfoliatum
Lowell Ahart, John Dittes
2005-6-2
11920
Lassen
Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction
1459
Comment
JEPS95756
Lepidium perfoliatum
Vernon H. Oswald and L. Ahart
1995-6-19
6899
Lassen
T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395
1383
Comment
SFV1490
Lepidium perfoliatum
I. L. Wiggins, D. B. Wiggins
1961-6-11
16332
Lassen
13.5 miles east of Susanville.
1240
Comment
UC1126714
Lepidium perfoliatum
A. Simontacchi
1940-6-8
829
Lassen
Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad.
1706
Comment
UC1924234
Lepidium perfoliatum
Debra Valov
2004-6-9
2004260
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1274
Comment
RSA0092312
Leptosiphon harknessii
Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre
2013-7-12
31424
Lassen
Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville.
1732
Comment
CHSC59839
Leucocrinum montanum
Mary Meyer
1980-5-6
Lassen
Left side of Hwy 395, along barbed-wire fence, 1/4 mi from old gas station.
1615
Comment
CHSC61192
Leucocrinum montanum
Vernon H. Oswald; Lowell Ahart
1993-5-12
5375
Lassen
NE side of Hwy. 44, 1.6 mi NW of its intersection with A21 (to Westwood).
1737
Comment
JEPS87460
Leucocrinum montanum
Vernon H. Oswald and Lowell Ahart
1993-5-12
5375
Lassen
Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44)
1737
Comment
CAS-BOT-BC508366
Leucocrinum montanum
Rhonda Riggins
1989-4-27
1650
Lassen
US 395, 1.1 mile north Madeline, 8.8 mile south Modoc Co. line
1676
Comment
NY962818
Leucophysalis nana
N. H. Holmgren
1980-7-4
9510
Lassen
Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale
2190
Comment
UCD64227
Leymus cinereus
Beecher Crampton
1960-6-18
5718
Lassen
Southern Warner Mtns., vicinity of Blue Lake Ranch.
1981
Comment
UC1037100
Leymus triticoides
Leo Whitney
1933-8-4
2128
Lassen
ca 10 mi nw north end of Eagle Lake; Lassen National Forest, Sheepshead
1889
Comment
UCD65590
Leymus triticoides
R. Tofsrud
1947-7-1
218
Lassen
Near Thermos.
Comment
UCD86642
Leymus triticoides
J. Earl Coke
1931-6-1
s.n.
Lassen
Lassen County.
1524
Comment
UCD87762
Leymus triticoides
L. G. Stiles
1927-6-2
s.n.
Lassen
Milford.
Comment
UC1142948
Lilaea scilloides
A. L. Hormay
1941-6-18
5 a
Lassen
Little Harvey Valley; Lassen National Forest
1676
Comment
POM109716
Lilium pardalinum
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkins Ranch.
1463
Comment
JEPS120860
Limosella aquatica
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18755
Lassen
About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
UC1101431
Limosella aquatica
Malcolm A. Nobs and S. Galen Smith
1949-7-20
1046
Lassen
Bieber
Comment
CAS-BOT-BC332738
Linanthus
R. F. Thorne; Larry E. DeBuhr
1975-8-22
46973
Lassen
Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line
1615
Comment
JEPS114858
Linanthus bolanderi
Lowell Ahart, John Dittes
2008-6-19
14892
Lassen
Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber
1578
Comment
JEPS94989
Linanthus ciliatus
Vernon Oswald and Lowell Ahart
1997-6-24
8605 .1
Lassen
s of Susanville (3.5 mi e of Gold Run Road (29N10), on n side of Diamond Mountain at a stream on Forest Road 29N43); Diamond Mountain, Forest Road 29N43
1655
Comment
JEPS58441
Linanthus harknessii
G. S. Crew and C. S. Robinson
1927-7-15
76
Lassen
Feather Lake, sw Lassen County Feather Lake
1737
Comment
UC1025096
Linanthus harknessii
Leo Whitney
1934-5-27
1639
Lassen
near Crater Lake
1828
Comment
UC106752
Linanthus septentrionalis
T. S. Brandegee
1892-6-30
Lassen
Jonesville
Comment
RSA715980
Linum lewisii
L. Ahart, John Dittes
2005-6-2
11935
Lassen
Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct.
1499
Comment
CHSC106064
Linum lewisii var. lewisii
Lowell Ahart; John Dittes
2010-7-31
16981
Lassen
Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1516
Comment
CHSC36448
Linum lewisii var. lewisii
Susan H. Euing
1982-6-3
2
Lassen
Ca. 0.8 mi s jct forest service roads 5.16 and 5.17 heading towards 5-Corners.
Comment
SD43499
Lithophragma parviflorum
Philip A. Munz
1947-5-18
11862
Lassen
Fredonyer Forestry Public Camp Ground, west of Susanville
1509
Comment
CAS-BOT-BC428415
Lithophragma tenellum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49165
Lassen
Elysian Valley northwest of Janesville.
1325
Comment
CHSC68766
Lithophragma tenellum
Vernon H. Oswald
1997-5-27
8503
Lassen
North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139.
1546
Comment
CHSC71099
Lithophragma tenellum
Vernon H. Oswald; Lowell Ahart
1998-5-22
9127
Lassen
Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle.
1463
Comment
POM72685
Lithospermum ruderale
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin s Ranch.
1463
Comment
HSC69589
Lithospermum ruderale
Gary Schoolcraft
1979-6-19
67
Lassen
W of Post Camp on N side of main road
1829
Comment
SEINET10456166
Lithospermum ruderale
Paul Gallian, David B. Dunn
1971-6-2
Gallian 463
Lassen
6 mi. N of Hallelujah Jct. on US Hwy 395.
1402
Comment
JEPS15825
Lomatium bicolor var. leptocarpum
M. S. Baker and Franklin P. Nutting
1894-6-20
Lassen
near Bieber (Big Valley); Big Valley
Comment
UC1123077
Lomatium bicolor var. leptocarpum
Robert W. Gardner
1939-6-6
G- 28
Lassen
Harvey Valley Halls Flat Quad., Harvey Valley
Comment
UC1609378
Lomatium bicolor var. leptocarpum
Vernon H. Oswald and Lowell Ahart
1993-6-28
5620
Lassen
e. Poison Lake (n. of Hwy. 44 along Rd. 33N47 at n.e. end of Little Harvey Valley, between Champs Flat and Harvey Valley, meadow bordering a drying branch of Pine Creek); Little Harvey Valley
1737
Comment
HSC81652
Lomatium macrocarpum
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6028
Lassen
Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road.
1555
Comment
UC1479579
Lomatium macrocarpum
G. Schoolcraft
1980-4-8
204
Lassen
just n. Viewland (w. side of Hwy. 395)
1371
Comment
UCD127690
Lomatium macrocarpum
Richard R. Halse
1977-5-22
1549
Lassen
U.S. Highway 395, 9.5 miles north of Madeline.
1490
Comment
CHSC106671
Lomatium nevadense
B. Ignacio
2008-5-3
Lassen
Fort Sage Mountains.
1520
Comment
UC1523794
Lomatium nevadense
Gary Schoolcraft
1981-4-23
365
Lassen
Ash Valley
1524
Comment
OBI48160
Lomatium nevadense
Rhonda Riggins
1989-4-27
1651
Lassen
U.S. 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line.
1676
Comment
CHSC101028
Lomatium nevadense var. nevadense
John Dittes
2008-5-22
1540
Lassen
Modoc Plateau; ca 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca. 465 feet east of intersection of Hwy 139 and FS Road 36N02.
483
Comment
UC1483796
Lomatium nevadense var. nevadense
G. Schoolcraft
1979-4-18
10
Lassen
n. Skedaddle Ranch
1554
Comment
UC1567383
Lomatium nevadense var. nevadense
G. Schoolcraft
1989-5-3
1864
Lassen
near Karlo (n.w. corner Secret Valley); Secret Valley
1356
Comment
UCD127700
Lomatium nevadense var. parishii
Grady L. Webster
1989-5-13
7718
Lassen
2.5 mi east of Beckworth Pass.
Comment
CHSC89727
Lomatium nudicaule
L. P. Janeway
2004-6-26
8150
Lassen
High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18.
1714
Comment
RSA125874
Lomatium nudicaule
P. H. Raven, Otto T. Solbrig
1958-6-16
13250
Lassen
4.5 miles east of Westwood on Hwy 36
Comment
CHSC60710
Lomatium piperi
Vernon H. Oswald; Lowell Ahart
1993-6-3
5471
Lassen
Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville.
1749
Comment
CAS-BOT-BC217797
Lomatium ravenii
Lincoln Constance; E. DiFulvio
1962-4-16
3747
Lassen
1 mile S of Ravendale
1615
Comment
UC1483812
Lomatium ravenii
T. Prendusi, M. Meyer
1980-5-1
Lassen
S of Ravendale
1615
Comment
UCR183195
Lomatium ravenii
Jim Andre, G. L. Clifton
1993-6-2
7716
Lassen
Along Hwy 395 c. 25 mi NE of Susanville at Viewland exit, east of Shaffer Mtn
1349
Comment
POM78598
Lomatium triternatum
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin s Ranch.
1463
Comment
CHSC29890
Lomatium triternatum var. macrocarpum
Robin L. Ondricek
1978-6-8
50
Lassen
.6 mi e of jct. With main road to ELFS on road to Murrers Upper Meadow.
1554
Comment
UCD55281
Lomatium vaginatum
Ellen Dean; Gary Schoolcraft
2006-5-16
3100
Lassen
East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields.
1207
Comment
OBI81598
Lomatium vaginatum
Tracy Call, Viola Call
1961-5-30
2047
Lassen
About 2 miles south of Ravendale
1463
Comment
RSA18256
Lonicera conjugialis
C. B. Wolf
1929-9-1
3786
Lassen
Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake.
Comment
UC1249270
Lotus corniculatus
Arthur Cronquist and Arthur H. Holmgren
1959-6-17
8474
Lassen
1 mi se Milford (near Honey Lake, 26 mi se of Susanville)
1310
Comment
UC726744
Lotus denticulatus
A. A. Heller
1941-6-24
16191
Lassen
1 mi e Sieber (along US Hwy 299)
Comment
SEINET10452003
Lotus purshianus
Mary Susan Taylor
1974-1
Taylor 281
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
JEPS107457
Lotus purshianus var. purshianus
Lowell Ahart, John Dittes
2005-6-2
11970 -A
Lassen
Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction
1408
Comment
JEPS117484
Lotus purshianus var. purshianus
Lowell Ahart, John Dittes
2010-7-31
16999
Lassen
On the north side of the road, about 15 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1516
Comment
JEPS55772
Lotus purshianus var. purshianus
Brown and Wieslander
1922-8-19
89
Lassen
Martin Springs Eagle Lake
Comment
UC1129240
Lotus purshianus var. purshianus
A. Simontacchi
1940-6-30
903
Lassen
2.6 mi w Ladder Butte; Lassen National Forest, Halls Flat Quad.
1684
Comment
NY716011
Lotus tenuis
A. J. Cronquist
1959-6-17
8474
Lassen
Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville
1311
Comment
RSA519408
Lupinus
Rockwell
1925-7-1
s.n.
Lassen
Beckwith
Comment
CHSC29949
Lupinus arbustus
Robin Ondricek
1978-6-6
30
Lassen
Approx. 1 mi from ELFS where lines corss road.
1584
Comment
CHSC67218
Lupinus arbustus
James D. Jokerst
1991-5-29
3302
Lassen
Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road.
1737
Comment
JEPS28489
Lupinus arbustus
George W. Gillett
1957-7-29
956
Lassen
near the Butte Lake Trail (above Snag Lake); , near the Butte Lake Trail
1859
Comment
SEINET10841274
Lupinus arbustus subsp. silvicola
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2577
Lassen
6 miles s of adin; along cal hwy 139 right-of-way; in basalt-clay, grassy road Bank; artemisia juniper assoc
1372
Comment
UC1542916
Lupinus argenteus
G. Schoolcraft
1987-9-1
1773
Lassen
Ash Valley RNA
1554
Comment
CAS-BOT-BC196338
Lupinus argenteus var. argenteus
H. D. Ripley; R. C. Barneby
1944-5-30
5975
Lassen
Ravendale
1676
Comment
CAS-BOT-BC208731
Lupinus argenteus var. heteranthus
M. S. Taylor
1982-6-12
4653
Lassen
Doyle, ca. 0.5 mi E of Hwy 395
Comment
CAS-BOT-BC208733
Lupinus argenteus var. heteranthus
E. K. Balls
1950-5-21
14824
Lassen
Standish, 7 mi. from junction of Hwy. 36 and 395.
1249
Comment
CAS-BOT-BC208748
Lupinus argenteus var. heteranthus
Alice Eastwood; John Thomas Howell
1940-6-16
8334
Lassen
Near Susanville.
Comment
CAS-BOT-BC208750
Lupinus argenteus var. heteranthus
Alice Eastwood; John Thomas Howell
1940-6-15
8317
Lassen
Upper Willow Creek east of Hayden Hill
Comment
CAS-BOT-BC208754
Lupinus argenteus var. heteranthus
W. W. Eggleston
1927-7-14
21512
Lassen
Willow Creek, near Hayden Hill, Modoc Forest
1500
Comment
CAS-BOT-BC208757
Lupinus argenteus var. heteranthus
Doris Kildale Gillespie
1930-5-13
9372
Lassen
Between Susanville and Janesville.
Comment
CAS-BOT-BC208765
Lupinus argenteus var. heteranthus
Margaret Williams; Steven Williams
1974-7-26
74 -L-13
Lassen
Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 - Sierra Nevada
1493
Comment
CAS-BOT-BC208768
Lupinus argenteus var. heteranthus
A. B. Clawson
1935-7-13
C- 213
Lassen
3 mi. SW of Madeline
Comment
NY736922
Lupinus argenteus var. heteranthus
N. H. Holmgren
1978-6-11
8925
Lassen
Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance
1800
Comment
NY736927
Lupinus argenteus var. heteranthus
J. T. Howell
1974-7-8
50461
Lassen
Susanville
1295
Comment
NY736931
Lupinus argenteus var. heteranthus
J. H. Christ
1949-5-22
18218
Lassen
8 miles southeast of Doyle, along Highway 395
Comment
RSA160042
Lupinus argenteus var. heteranthus
David B. Dunn
1956-7-3
11919
Lassen
On Highway 395.
Comment
SEINET11261487
Lupinus argenteus var. heteranthus
Robert L. Johnson, Mikel R. Stevens
2015-7-10
3926
Lassen
5.5 rd miles west of jct with Hwy 395 on Dawn Dr then rd to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0
1899
Comment
UC865087
Lupinus argenteus var. heteranthus
A. A. Heller
1938-6-23
Lassen
just outside of Johnstonville ( along U.S. Hwy 395)
Comment
UCD106809
Lupinus argenteus var. heteranthus
R. N. Raynor
1939-6-3
s.n.
Lassen
Susanville.
Comment
CHSC93547
Lupinus argenteus var. meionanthus
Lowell Ahart; John Dittes
2005-6-2
11937
Lassen
Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction.
1600
Comment
SEINET10484833
Lupinus aridus
Billy Joe Cox
1971-6-11
Cox 3190
Lassen
6 mi w. Of susanville on calif. Hwy 36; in volcanic soil; association with Pinus ponderosa forest.
1615
Comment
JEPS79209
Lupinus brevicaulis
L. R. Heckard with R. C. Bacigalupi
1980-6-11
5246
Lassen
along US 395, 11.3 mi n Litchfield (s of Deep Creek crossing); , n of Litchfield
1463
Comment
SEINET10484990
Lupinus brevicaulis
Gary Schoolcraft
1980-5-30
Schoolcraft 246
Lassen
Lassen co. T31n, r15e, se1/4, sec. 11. Elev. 4460'. On s side of rd. Into Diaz ranch at n end of mud flat. Associated with artemisia tridentata, Chrysothamnus spp., Sitanion hystrix.
1359
Comment
CAS-BOT-BC196639
Lupinus breweri var. breweri
Marcus E. Jones
1897-6-21
s.n.
Lassen
Chat
1615
Comment
HSC81486
Lupinus caudatus
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6015
Lassen
Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir
1585
Comment
SD43491
Lupinus caudatus
Philip A. Munz
1947-5-20
11888
Lassen
Milford
1264
Comment
SEINET10490714
Lupinus caudatus subsp. caudatus
Paul Gallian, David B. Dunn
1971-6-2
Gallian 481
Lassen
5 mi. S of milford near honey lake on us hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - jeffery pine on mountain range to w at Approx. The same altitude.
1250
Comment
POM23529
Lupinus confertus
Marcus E. Jones
1897-6-16
s.n.
Lassen
Susanville, Perkin's Ranch.
1463
Comment
RSA0029190
Lupinus confertus
John F. Emmel
1997-6-8
1490
Lassen
At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction.
1448
Comment
UCD108200
Lupinus latifolius var. columbianus
Jack Major
1966-6-24
s.n.
Lassen
above Blue Lake, Warner Mounains, Modoc National Forest, northeastern part of county (ca. 18. miles airline southeast of Likely).
Comment
SEINET6655529
Lupinus laxiflorus var. calcaratus
Noel H. Holmgren, Patricia K. Holmgren
1978-6-11
8932
Lassen
2.4 km (1.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale.; 0
1830
Comment
CHSC4818
Lupinus lepidus var. confertus
R. Carter
1967-7-16
618
Lassen
Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca. 12 mi n of Susanville, on s side of rd.
Comment
JEPS65081
Lupinus lepidus var. confertus
W. L. Jepson
Aug. 1918
7798
Lassen
Raker Ranch near Buntingville; Raker Ranch naer Buntingville
1219
Comment
SEINET249342
Lupinus lepidus var. confertus
Richard R. Halse
2004-7-22
6670
Lassen
Along U.S. Hwy. 395 ca. 7.8 miles southeast of Susanville.
1293
Comment
CHSC99135
Lupinus lepidus var. lobbii
Lowell Ahart; John Dittes
2008-6-19
14886 -A
Lassen
Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber.
1578
Comment
CHSC91526
Lupinus lepidus var. sellulus
L. P. Janeway
2005-7-4
8474
Lassen
High Cascade Range. Along Road 33N02 in Windy Gap; meadow between Harvey Valley and Grays Valley.
1696
Comment
UCD18975
Lupinus lepidus var. sellulus
Jack N. Reppert
1964-8-5
29
Lassen
Lassen National Forest, Harvey Valley Allotment (HV 80-75).
1719
Comment
SEINET10870671
Lupinus leucophyllus
Duane Isely
1971-7-12
Isely 11386
Lassen
Open sagebrush plains, lassen natl forest, adjacent eo state #44, 29 mi east Jct state #89. Dense, conspicuous clusters; fls white, rapidly turningtan-ochroleucous; standard reflexed to 120 degrees; wings upturned 90 degrees; long-petioled basal leaves evident.
1676
Comment
UC1713549
Lupinus polyphyllus var. burkei
M. S. Baker and Frank Nutting
1894-1
Lassen
Comment
SEINET7949966
Lycopus asper
T. L. Breene, H. Sampson
1937-1
56
Lassen
Honey Lake Valley.
Comment
CHSC93681
Lythrum hyssopifolia
Lowell Ahart; John Dittes
2005-6-2
11969
Lassen
Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction.
1408
Comment
JEPS107819
Lythrum hyssopifolia
Lowell Ahart, John Dittes
2005-6-2
11969
Lassen
Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction
1408
Comment
RSA0105576
Lythrum tribracteatum
Lowell Ahart, John Dittes
2013-7-23
18902
Lassen
About 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CAS-BOT-BC342645
Madia citrigracilis
John Thomas Howell
1934-7-8
12494
Lassen
Spalding's, Eagle Lake
1584
Comment
UC579789
Madia citriodora
David D. Keck and J. Clausen
1935-6-25
3761
Lassen
just w Susanville
1310
Comment
CAS-BOT-BC342657
Madia citriodora
David D. Keck; J. Clausen
1935-6-25
3761
Lassen
Susanville
1300
Comment
UCR67469
Madia elegans
George K. Helmkamp
1990-10-4
M 11
Lassen
Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass
1463
Comment
CAS-BOT-BC334687
Madia glomerata
David D. Keck
1930-7-23
955
Lassen
Fifteen miles west of Susan ville, Sierra Nevada
1524
Comment
OBI55501
Madia glomerata
David J. Keil, Kathleen Keil
1992-7-25
23607
Lassen
Along hwy 36, 9.1 mi E of Plumas County line, W of Susanville
Comment
CAS-BOT-BC343058
Madia gracilis
John Thomas Howell
1973-7-10
49781
Lassen
Fredonyer Pass
1737
Comment
CAS-BOT-BC343055
Madia gracilis
David D. Keck
1930-7-23
949
Lassen
Susanville
1280
Comment
CAS-BOT-BC343060
Madia gracilis
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50653
Lassen
Slope south and southeast of Diamond Mt.
2286
Comment
RSA164326
Malacothrix floccifera
Clare B. Hardham
1961-6-16
7491
Lassen
Gold Run Creek south of Susanville.
Comment
HSC63963
Malacothrix sonchoides
Teresa Prendusi
1980-5-30
Lassen
Mapes Spring on hillside
1555
Comment
UC1567438
Malacothrix torreyi
G. Schoolcraft
1989-5-31
1885
Lassen
About 4 mi N Wendel Road, along Skedaddle Ranch Rdoad.
1493
Comment
CAS-BOT-BC348031
Malacothrix torreyi
Louella Bass
1982-6-20
s.n.
Lassen
About 1 mile west of Karlo
Comment
HSC23508
Marrubium vulgare
A. E. Anderson
1967-7-11
78
Lassen
Around Bly Tunnel outlet, 1 mi. E of rd. to Eagle Lake Biological Station
1555
Comment
HSC25433
Marsilea vestita
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19177
Lassen
Harvey Valley near Cone Springs
Comment
RSA252423
Marsilea vestita
R. F. Thorne, C. W. Tilforth
1969-9-5
39139
Lassen
Said Valley Reservoir.
Comment
SEINET3816871
Matricaria discoidea
Noel H. Holmgren, Patricia K. Holmgren
1980-7-5
9522
Lassen
Upper smoke creek drainage, 20.4 km from U.S. highway 395 via Rye Patch Canyon, 24 km airline distance southeast of Ravendale,
1580
Comment
RSA647538
Matricaria matricarioides
Marion P. Harthill
1972-6-16
783
Lassen
Doyle
1372
Comment
CHSC29877
Matricaria occidentalis
Robin L. Ondricek
1978-8-26
127
Lassen
At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139.
1493
Comment
CAS-BOT-BC282042
Melica fugax
John Thomas Howell
1934-6-14
12167
Lassen
Near Lost Lake, Warner Mountains
2438
Comment
UC972185
Melica fugax
Milo S. Baker
1952-5-23
12427
Lassen
e of Chester (Highway 36)
Comment
CHSC80722
Melica stricta
V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft
2001-6-2
10037
Lassen
Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road.
1828
Comment
UCD88630
Melica subulata
John Thomas Howell; Gordon H. True and Margaret Williams
1973-6-28
49438
Lassen
Sierra Nevada. Elysian Valley west of Janesville.
1325
Comment
SCFS2161
Melilotus albus
C. Meek
1969-7-8
77
Lassen
On roadside along Hwy 139, 2 mi E of Ravenville Rd.
1524
Comment
CHSC106683
Mentzelia albicaulis
B. Ignacio
2008-5-3
Lassen
Fort Sage Mountains.
1520
Comment
CHSC25305
Mentzelia albicaulis
Pauleen Broyles
1977-6-1
152
Lassen
Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong.
1660
Comment
JEPS94107
Mentzelia albicaulis
Vernon H. Oswald and Lowell Ahart
1998-5-22
9137
Lassen
ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.)
1341
Comment
SFV12339
Mentzelia albicaulis
J. Major
1966-6-24
s. n.
Lassen
Warner Mountains Above Blue Lake, about 18 miles (airline) southeast of Likely.
1905
Comment
SFV2374
Mentzelia albicaulis
I. L. Wiggins, D. B. Wiggins
1961-6-11
16340
Lassen
13.5 miles east of Susanville.
1240
Comment
CDA36651
Mentzelia albicaulis
S. E. Piper
1943-7-2
Lassen
0.5 mile east of Herlong.
0
Comment
CHSC5299
Mentzelia congesta
R. Gein
1946-6-25
Lassen
Webb's Camp, Eagle Lake.
1554
Comment
HSC31748
Mentzelia congesta
Donald Spalinger
1974-5-16
61
Lassen
300 yds. S of intersection of Rd. A3 and H 395
1250
Comment
POM83650
Mentzelia congesta
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat.
1524
Comment
RSA715551
Mentzelia congesta
L. Ahart, John Dittes
2005-6-1
11887
Lassen
On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction.
1434
Comment
UC124778
Mentzelia congesta
T. S. Brandegee
1893-6-23
Lassen
Honey Lake
Comment
UC1609444
Mentzelia congesta
Vernon H. Oswald and Lowell Ahart
1993-6-14
5537
Lassen
ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake
1566
Comment
CHSC92643
Mentzelia dispersa
L. P. Janeway
2005-7-4
8470
Lassen
High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41.
1752
Comment
JEPS127346
Mentzelia dispersa
Lowell Ahart, John Dittes
2016-7-13
21124
Lassen
200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
CHSC20266
Mentzelia laevicaulis
J. Pitts
1972-7-20
334
Lassen
Found on hwy 139, 10 mi n of Susanville.
Comment
JEPS42757
Mentzelia montana
W. L. Jepson
1918-8-2
7773
Lassen
Beckwith Pass
1463
Comment
RSA202434
Mentzelia montana
Jack Major
1966-6-24
s.n.
Lassen
Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of Likely)
1905
Comment
HSC95201
Menyanthes trifoliata
Gordon Leppig, Tony LaBanca
1997-6-28
510
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
JEPS95001
Mertensia ciliata
Vernon Oswald and Lowell Ahart
1997-6-24
8617
Lassen
2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43
2036
Comment
JEPS95161
Mertensia ciliata
Vernon Oswald and Lowell Ahart
1997-6-24
8617
Lassen
2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43
2036
Comment
CHSC7717
Mertensia longiflora
Beverley J. Wise
1969-5-3
3
Lassen
12 mi. N.E. of Susanville on Lass. Co. Rd. 216 off Las. Co. Rd. 215. On bank of Willow Creek.
1554
Comment
CAS-BOT-BC429183
Micranthes oregana
John Thomas Howell
1934-7-9
12516
Lassen
Bridges Creek Spring
Comment
OBI76931
Microseris laciniata
Anthony Baniaga
2011-7-9
434
Lassen
Lassen Natl forest. SW Pine Crk Valley. Pine Crk valley quad T31N R8E sec 10 NE of NE
1715
Comment
JEPS118157
Microseris laciniata subsp. laciniata
Dean W. Taylor
2009-5-21
20606
Lassen
Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir
1706
Comment
JEPS88326
Microseris laciniata subsp. laciniata
Vernon H. Oswald and Lowell Ahart
1996-6-24
7843
Lassen
Papoose Meados located ca.0/5 mi E of Eagle Lake Road (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau.
1633
Comment
POM34993
Microseris nutans
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
RSA702595
Microseris nutans
L. P. Janeway
2004-6-26
8152
Lassen
High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18.
1714
Comment
UC1136771
Microseris nutans
L. R. Short
1936-6-1
S- 353
Lassen
Lassen Forest
1859
Comment
CHSC61166
Microsteris gracilis
Vernon H. Oswald; Lowell Ahart
1993-5-12
5376
Lassen
Canal crossing Hwy. 44, 3.5 mi NW of A21 ( to Westwood).
1729
Comment
RSA122924
Microsteris gracilis subsp. humilis
L. R. Short
1936-5-7
S- 343
Lassen
MDM, Burgess Spring Experiment Range.
1738
Comment
RSA104220
Microsteris gracilis subsp. humilis
Verne Grant, Alva Grant
1956-5-18
21757
Lassen
Sage brush flat about Lassen County: 8 miles S of Madeline
1280
Comment
RSA104221
Microsteris gracilis subsp. humilis
Verne Grant, Alva Grant
1956-5-18
9801
Lassen
4 miles S of Ravendale.
1280
Comment
CDA41658
Mimulus breviflorus
S. E. Schoenig
1998-7-5
98 -71
Lassen
East side of Poison Lake, 50 meters west of Pitville Road, 1.8 miles northwest of Highway 44, east of railroad track and wet ditch.
Comment
UC1778584
Mimulus breviflorus
S. E. Schoenig
1998-7-5
98 -71
Lassen
Moist clayey soil. East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track and wet ditch.
1749
Comment
HSC95336
Mimulus guttatus
Gordon Leppig, J. Cromwell
1997-7-27
618
Lassen
Modoc National Forest, Blue Lake Ranch.
1970
Comment
CDA41794
Mimulus guttatus
T. C. Fuller
1961-5-17
6961
Lassen
Hot springs, Wendell.
0
Comment
UCD122727
Mimulus kelloggii
K. Lui
1998-5-24
29
Lassen
Lassen National Forest, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River.
463
Comment
UC27139
Mimulus layneae
M. S. Baker and Frank Nutting
Lassen
Big Valley
Comment
JEPS94552
Mimulus lewisii
Vernon Oswald and Lowell Ahart
1997-6-24
8616
Lassen
0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43
1889
Comment
JEPS10777
Mimulus moniliformis
Brown and Wieslander
1922-7-30
17
Lassen
Martin Springs
Comment Read comments Jun 4 2007
RSA411323
Mimulus nanus var. jepsonii
Christopher Davidson
1974-7-25
2499
Lassen
Lassen Volcanic Nat. Park. At Juniper Lake.
2134
Comment
RSA715546
Mimulus nanus var. mephiticus
L. Ahart, John Dittes
2005-6-1
11869
Lassen
On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction.
1449
Comment
UC1561980
Mimulus nanus var. mephiticus
Barbara Ertter with Gary Schoolcraft
1987-6-16
7197
Lassen
saddle on e side Hot Springs Peak (on ne side of lake); Skeedaddle Mountains, Honey Lake
2194
Comment
POM126736A
Mimulus nanus var. nanus
Milo S. Baker
1890-1
s.n.
Lassen
Milford. Honey Lake Valley.
Comment
RSA434702
Mimulus primuloides
Christopher Davidson
1974-7-25
2495
Lassen
Lassen Volcanic Nat. Park. On rd to Juniper Lake.
1982
Comment
RSA152664
Mimulus torreyi
I. L. Wiggins, Dorothy B. Wiggins
1961-6-10
16316
Lassen
2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood.
Comment
CHSC5272
Monardella odoratissima subsp. glauca
J. B. Kimsey
1946-6-11
Lassen
Pine Creek, near Eagle Lake.
1580
Comment
CHSC65314
Monardella odoratissima subsp. glauca
Vernon H. Oswald; Lowell Ahart
1995-8-14
7192
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville.
1676
Comment
UC1137693
Monardella odoratissima subsp. glauca
George A. Fischer, Irwin H. Johnson
1933-7-12
F 225
Lassen
Lassen National Forest
1722
Comment
CHSC29873
Monardella odoratissima subsp. pallida
Robin L. Ondricek
1978-6-27
74
Lassen
1977 Burn, .1 mi w of intersection with road which passes Colman Lake.
1889
Comment
CAS-BOT-BC444695
Montia chamissoi
Louella Bass
1973-6-17
123
Lassen
Elysian Valley.
1325
Comment
CHSC68757
Montia chamissoi
Vernon H. Oswald; Lowell Ahart
1997-5-27
8498
Lassen
North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. In wet gravel on the flood plain of a small creek paralleling the road.
1546
Comment
UC1567410
Montia chamissoi
G. Schoolcraft
1989-7-18
1983
Lassen
near Buck's Spring (s of Clark's Valley Road)
1874
Comment
CHSC64850
Montia linearis
Vernon H. Oswald
1995-6-26
6941
Lassen
Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. Common in moist, ashy soil of small openings on a flat of sagebrush.
1542
Comment
CHSC93667
Muhlenbergia asperifolia
Lowell Ahart; John Dittes
2005-6-2
11972
Lassen
Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction.
1408
Comment
CHSC60477
Muhlenbergia filiformis
Mary Ann Showers
1992-6-12
2519
Lassen
Lassen Volcanic National Park. Meadow, Butte Lake.
1859
Comment
UC589840
Muhlenbergia filiformis
H. S. Yates
1936-8-12
6081
Lassen
McKenzie Meadow Susanville Quadrangle
1524
Comment
RSA256304
Muhlenbergia jonesii
J. R. Reeder, C. G. Reeder
1973-6-5
6237
Lassen
25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest
1768
Comment
CAS-BOT-BC275082
Muhlenbergia richardsonis
Malcom A. Nobs; S. Galen Smith
1949-7-21
1060
Lassen
4 miles N of Madeline
Comment
RSA0115568
Muhlenbergia richardsonis
Jim M. Andre, G. Clifton
1993-6-11
33424
Lassen
Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale.
1545
Comment
UCD86988
Muhlenbergia richardsonis
L. Whitney
1933-8-15
s.n.
Lassen
Near Slate Creek.
1905
Comment
CHSC64813
Muilla transmontana
Vernon H. Oswald
1995-5-31
6810
Lassen
Modoc Plateau. Smoke Creek Ranch Rd. 1.7 mi e of Hwy. 395, between Litchfield and Ravendale.
1353
Comment
CHSC71134
Muilla transmontana
Vernon H. Oswald; Lowell Ahart
1998-5-22
9133
Lassen
Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle.
1737
Comment
CHSC7657
Muilla transmontana
Beverley J. Wise
1969-5-3
145
Lassen
4.7 mi. east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road).
1615
Comment
CHSC66236
Myosotis micrantha
Vernon H. Oswald; Lowell Ahart
1996-6-24
7880
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Along Papoose Creek where it leaves the N end of the meadow.
1633
Comment
NY492641
Myosurus apetalus
M. J. Williams
1986-5-14
8638- 3
Lassen
Tuledad Canyon Road, from Duck Flat to Ravendale. 0.1 mile west of California-Nevada line.
Comment
CHSC60917
Myosurus apetalus var. borealis
Vernon H. Oswald; Lowell Ahart
1993-7-8
5651
Lassen
Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along the edge of a wet pool on the E side of the railroad, which parallels the lake shore at this point.
1709
Comment
CHSC54193
Myosurus minimus
Vernon H. Oswald
1991-5-28
4621
Lassen
Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the beds of vernal pools east of the barn.
1264
Comment
JEPS114645
Myosurus minimus
Lowell Ahart, John Dittes
2008-6-20
14940
Lassen
In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
JEPS94606
Myosurus minimus
Vernon H. Oswald and Lowell Ahart
1997-5-27
8518
Lassen
on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir
1682
Comment
UC72894
Myosurus minimus
Milo S. Baker
1894-7-1
Lassen
Dixie Mts
Comment
UC1101505
Myriophyllum sibiricum
Malcolm A. Nobs and S. Galen Smith
1949-7-20
1049
Lassen
Irrigation canal, ca. 4 mi W of Adin.
Comment
RSA0084057
Nama aretioides var. californica
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat.
1524
Comment
HSC30194
Nama aretioides var. multiflora
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19299
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
CHSC7683
Nama demissa
Berverly J. Wise
1969-5-18
48
Lassen
7.7 mi. E. of Susanville on Co. Rd. 215 on the south side of the road.
1341
Comment
SEINET5520826
Nama densa var. densa
M. J. Williams
1974-7-26
74 -L-18
Lassen
2 mi west of Hallelujah Junction, south of Hwy 70
1494
Comment
RSA508616
Narthecium californicum
Mrs. R. M. Austin
1880-8-3
s.n.
Lassen
Mount Dyer
1829
Comment
CHSC89734
Navarretia breweri
L. P. Janeway
2004-6-26
8143
Lassen
High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18.
1714
Comment
SD3921
Navarretia breweri
T. S. Brandegee
1892-7-1
Lassen
Susanville
Comment
UCD32675
Navarretia breweri
Beecher Crampton
1954-7-6
2080
Lassen
Lassen County, 3 miles north of Madeline, along US highway 395.
Comment
UCR119029
Navarretia intertexta
Beecher Crampton
1954-7-6
2072
Lassen
Modoc Plateau, 17 miles south of Ravendale along US highway 395.
1524
Comment
CHSC113069
Navarretia intertexta subsp. intertexta
Lowell Ahart; John Dittes
2013-7-22
18869
Lassen
Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
UC1008717
Navarretia intertexta subsp. propinqua
Laura E. Mills
1940-7-8
Lassen
about 2 mi s Susanville; Sierra Nevada Mountains
1524
Comment
UC1594649
Navarretia intertexta subsp. propinqua
Vernon H. Oswald and Lowell Ahart
1992-7-16
5111
Lassen
s side Hwy. 44 (Bridge Creek entering McCoy Flat Reservoir, between Old Station and Susanville); McCoy Flat Reservoir, Bridge Creek
1691
Comment
UCD48605
Navarretia intertexta subsp. propinqua
John M. Tucker
1950-7-25
1977
Lassen
On road from Pittville, 33 miles northwest of Susanville, Lassen County, California.
Comment
CHSC1252
Navarretia leptalea
K. Chew
1951-7-8
Lassen
Stephens Meadows, Pine Creek.
1706
Comment
CAS-BOT-BC230335
Navarretia leucocephala
Mrs. H. C. Cantelow
1940-5-31
4144
Lassen
E of Bieber
Comment
CHSC34344
Navarretia leucocephala subsp. minima
K. R. Stern
1974-6-26
5868
Lassen
E end of Champs Flat.
Comment
JEPS88516
Navarretia leucocephala subsp. minima
Vernon H. Oswald and Lowell Ahart
1996-6-24
7847
Lassen
Papoose Meadows located ca. 0.5 mi. e. of Eagle lake Rd. (A1) and 2.5 mi. s. of Eagle Lake (on w. side of the meadow just s. of the cabins); Modoc Plateau, Papoose Meadows
1633
Comment
UC1058208
Navarretia leucocephala subsp. minima
C. McMillan
1949-6-15
1542
Lassen
5 mi w Bieber
Comment
UC23714
Navarretia leucocephala subsp. minima
M. S. Baker and F. Nutting
1894-7-21
Lassen
Eagle Lake
Comment
RSA293374
Navarretia leucocephala subsp. minima
Reino Alava
1957-7-5
1143
Lassen
Along Highway 395, 10 miles N of Madeline.
Comment
SEINET2440301
Navarretia linearifolia subsp. linearifolia
Leigh A. Johnson
2006-7-2
06 -138
Lassen
Lassen Nat. Forest, Long Lake vicinity. Off Hwy 44 at mile marker 20.74 (just E of jct between 44 and county road A21). Along shore between trees and water's edge, particularly at point where spur from Hwy 44 connects with road next to lake.; 0
1736
Comment
SEINET10496833
Navarretia propinqua
Mary Susan Taylor
1974-1
Taylor 277
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
SEINET10972223
Nemacladus capillaris
Hardham
1961-6-16
HARDHAM 7450
Lassen
Gold Run Creek south of Susanville
Comment
UCSB30253
Nemacladus interior
Hardham, Clare
1961-6-16
Lassen
Gold Run Creek south of Susanville
Comment
CAS-BOT-BC219366
Nemophila
Louella Bass
1973-4-15
26
Lassen
Elysian Valley
1325
Comment
RSA38472
Nemophila parviflora var. austiniae
P. A. Munz
1947-5-18
11860
Lassen
Fredonyer Forestry Public Camp Ground. W of Susanville.
1509
Comment
CHSC61157
Nemophila pedunculata
Vernon H. Oswald; Lowell Ahart
1993-5-12
5389
Lassen
Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. In a sagebrush scrub meadow on the S side of the road.
1719
Comment
UC791038
Nemophila pedunculata
Calvin McMillan and Malcolm A. Nobs
1949-6-15
1539
Lassen
5 mi w Nubieber; w of Nubieber
Comment
POM73805B
Nemophila pedunculata
Marcus E. Jones
1897-7-1
s.n.
Lassen
Susanville at Perkin s Ranch.
1524
Comment
JEPS19729
Neoholmgrenia andina
Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr.
1957-6-28
5992
Lassen
about 1 mi n Sage Hen siding on S.P. Railway (along U.S. Hwy 395, and 7.0 mi n of Madeline)
1676
Comment
CHSC5920
Nicotiana attenuata
J. B. Kimsey
1946-6-17
Lassen
Eagle Lake. Horse Lake.
1554
Comment
CDA41136
Nicotiana attenuata
T. C. Fuller
1959-7-7
4734
Lassen
Highway 395, 2.4 miles south of road to Karlo.
0
Comment
HSC21267
Nicotiana attenuata
M. T. Milligan
1964-8-23
238
Lassen
400 yards E of Siad Valley Reservoir on Termo Rd.
1524
Comment
UC1111001
Nuphar lutea subsp. polysepala
Herbert L. Mason
1957-7-7
14727
Lassen
Valley s of Eagle Lake
Comment
RSA0009448
Nuphar lutea subsp. polysepala
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
CAS-BOT-BC171462
Oenothera boothii
Louella Bass
1978-5-18
s.n.
Lassen
Amedee
Comment
JEPS124827
Oenothera cespitosa
M. L. Wheelis
1964-6-30
125
Lassen
16 miles north of Hallelujah Junction, highway 395.
Comment
UCD33605
Oenothera deltoides
Beecher Crampton
1970-6-26
8638
Lassen
Lassen County, 10 miles north of Milford.
Comment
SEINET10453107
Oenothera deltoides
Mary Susan Taylor
1982-6-12
Taylor 4652
Lassen
T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft.
1280
Comment
UC1186579
Oenothera deltoides subsp. piperi
G. I. Stage and R. W. Thorp
1959-6-19
59 -113
Lassen
7.2 mi se Milford
Comment
UC66124
Oenothera deltoides subsp. piperi
P. B. Kennedy
1901-6-10
Lassen
R.R. station Constantia
Comment
SEINET5345714
Oenothera deltoides var. piperi
P. B. Kennedy
1901-6-10
s.n.
Lassen
R.R. Station, Constantia
Comment
SEINET3150416
Oenothera tanacetifolia
E. K. Balls
1950-5-9
15954
Lassen
5 mi. S of Modoc Co. line, Hwy 395
1219
Comment
CAS-BOT-BC349944
Onopordum acanthium
T. C. Fuller
1958-7-8
898 -58
Lassen
Highway 299, 0.1 mi. S. of Lassen County Line
Comment
CDA36768
Onopordum acanthium
D. B. Joley
1976-6-16
1
Lassen
Grasshopper Lake, on Highway 139, 33 miles north of Susanville.
0
Comment
RSA0049669
Onopordum acanthium subsp. acanthium
Dean Wm. Taylor
2012-5-15
21197
Lassen
Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley)
1676
Comment
CAS-BOT-BC350039
Oreostemma alpigenum var. andersonii
A. A. Heller
1937-9-1
15343
Lassen
About a mile east of Westwood
1524
Comment
HSC93313
Oreostemma alpigenum var. andersonii
Vernon H. Oswald, L. Ahart
1996-8-1
8121
Lassen
FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood
1738
Comment
HSC97139
Oreostemma elatum
Martin J. Lenz
2005-7-20
2042
Lassen
N slope od Dryer Mtn.; approx. 1.4 air mi. N of summit: Roseburg Resources Co.
1822
Comment
CHSC105235
Orobanche californica subsp. jepsonii
Lowell Ahart; John Dittes
2010-7-31
16985 A
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
UC1137776
Orobanche corymbosa subsp. corymbosa
August L. Hormay
1934-7-2
Lassen
Lassen National Forest, 1/4 mile NW of Black's Mountains, Headquarters.
Comment
UC773942
Orobanche corymbosa subsp. corymbosa
L. R. Short and J. Warren
1936-6-30
S- 465
Lassen
NW of Eagle Lake, Burgess Spring Experiment Range.
Comment
RSA0077927
Orobanche corymbosa subsp. corymbosa
Clare B. Hardham
1961-6-17
7530
Lassen
Route 395 between Alturas and Susanville.
Comment
CAS-BOT-BC500270
Orobanche uniflora subsp. occidentalis
Doris Kildale Gillespie
1930-5-13
9368
Lassen
Between Susanville and Janesville
Comment
RSA516524
Orthocarpus campestris
Helen-Mar Wheeler
1952-7-11
s.n.
Lassen
South of Madeline.
Comment
SD52193
Orthocarpus copelandii var. cryptanthus
F. Stephens
1894-7-15
8115
Lassen
Bunch Grass Spring
Comment
UCD18956
Orthocarpus cuspidatus subsp. copelandii
Raymond D. Ratliff
1965-7-17
21
Lassen
Lassen National Forest, Lyon's hgd., Harvey Valley Allot.
1706
Comment
UC1484779
Orthocarpus cuspidatus subsp. cryptanthus
Noel H. Holmgren and Patricia K. Holmgren
1978-6-12
8933
Lassen
17 km (10.5 mi) airline distance ese Ravendale (s of Observation Peak, upper Smoke Creek); Upper Smoke Creek, just s of Observation Peak
1770
Comment
UC1537445
Orthocarpus cuspidatus subsp. cryptanthus
Gordon H. True Jr.
1936-6-25
526
Lassen
e Harvey Ranger Station (Harvey Valley); Harvey Valley
1706
Comment
RSA165526
Orthocarpus hispidus
Clare B. Hardham
1961-6-17
7501
Lassen
Baxter Creek S of Susanville.
Comment
CHSC13864
Oxypolis occidentalis
Mary Meyer
1973-7-7
20
Lassen
Located at NE end of Murrer's Upper Meadow.
1572
Comment
RSA616541
Oxytheca dendroidea
G. R. Ballmer
1993-7-31
s.n.
Lassen
Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border
Comment
UC35987
Packera eurycephala var. eurycephala
M. S. Baker and Frank Nutting
1894-7-2
Lassen
Dixie Mts.
Comment
CAS-BOT-BC317058
Packera multilobata
Elmer Ivan Applegate
1897-6-3
867
Lassen
south of Madeline plains
Comment
CDA24372
Paeonia brownii
T. C. Fuller
1962-6-13
8997 d
Lassen
0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood.
0
Comment
SEINET10537847
Paeonia brownii
Mary Susan Taylor
1982-8-27
Taylor 5053
Lassen
T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft.
Comment
UCD102581
Paeonia brownii
F. H. Taylor
1932-5-1
s.n.
Lassen
Indian Valley.
Comment
SEINET229883
Pappostipa speciosa
G. Schoolcraft
1982-6-22
721
Lassen
N end of Fort Sage Mts.
1524
Comment
RSA294197
Pectocarya penicillata
A. Tiehm
1980-5-29
5753
Lassen
North end of Honey Lake Valley, 2 air miles NW of Wendel.
1232
Comment
SEINET13352677
Pectocarya penicillata
A. Tiehm
1980-1
5753
Lassen
N end of Honey Lake Valley, 2 air miles NW of Wendel.
1231
Comment
JEPS10727
Pedicularis groenlandica
Chesnut and Drew
Lassen
Lassen Peak
Comment
UC1125741
Pedicularis semibarbata
A. Simontacchi
1940-5-27
727
Lassen
9.3 mi nw of Crater Lake; Lassen National Forest
1752
Comment
SEINET10547960
Penstemon confusus
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 2607
Lassen
6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along ridge and in sandy wash.
1402
Comment
SD77352
Penstemon deustus
Francis W. Pennell
1940-6-7
25722
Lassen
Route 299, 11 miles west of Nubieber
1096
Comment
POM203062
Penstemon deustus subsp. heterander
J. T. Howell
1934-7-9
12523
Lassen
Pine Creek Flat
Comment
JEPS29103
Penstemon deustus var. pedicellatus
Lauramay T. Dempster
1961-6-17
1679
Lassen
Highway 395 just w Tule Mt.; just w of Tule Mt.
1645
Comment
CHSC29258
Penstemon gracilentus
J. D. Prouty
1978-6-28
11
Lassen
E of Eagle L., at W shore of Lower Dy L.
Comment
CHSC57205
Penstemon gracilentus
Mary Meyer
1980-7-23
Lassen
Along Cleghorn Creek.
1645
Comment
JEPS11268
Penstemon gracilentus
Brown and Wieslander
1922-7-25
5
Lassen
Martin Sprs , Martin Sprs (Eagle Lake)
Comment
JEPS27801
Penstemon gracilentus
Frances D. Payne
1929-7-12
81
Lassen
Lost Lake e drainage..Warner Range, Skunkcabbage and Silver Creeks... (watersheds of Skunkcabbage and Silver Creeks, eastern drainage of the s end of the Warner Range)
2286
Comment
RSA408033
Penstemon gracilentus
Rockwell
1925-7-1
s.n.
Lassen
Eagle Lake
Comment
UC1063167
Penstemon gracilentus
H. P. Hagge
1935-9-12
27
Lassen
Logan Mtn. Eagle Lake Quad., Logan Mtn.
Comment
UC1537436
Penstemon gracilentus
Gordon H. True Jr.
1938-7-14
959
Lassen
summit on Milford Grade , just on n slope (just on n slope)
1676
Comment
HSC21014
Penstemon gracilentus
M. T. Milligan
1964-7-16
142
Lassen
2 mi. W on the Silver Lake Rd., along Upper Susan River.
1829
Comment
CAS-BOT-BC245656
Penstemon janishiae
G. Schoolcraft
1997-8-6
2660
Lassen
Diamond Mtn.
2316
Comment
UCD124278
Penstemon laetus
Beecher Crampton
1964-6-26
7082
Lassen
ca. 32 miles northwest of Susanville west end of Harvey Valley.
Comment
CHSC66733
Penstemon neotericus
Vernon H. Oswald; Lowell Ahart
1996-8-1
8118
Lassen
Junction of Forest Rd. 28N56 (D-line) and the spure road to Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood.
1536
Comment
NY627263
Penstemon neotericus
A. A. Heller
1938-7-28
15294
Lassen
Pinus Ponderosa forest west of Westwood.
Comment
HSC93439
Penstemon neotericus
Vernon H. Oswald, L. Ahart
1996-8-1
8118
Lassen
Junction of FS Rd. 28N56 (D-Line) and the spur road to Indian Ole Dam on Mtn. Meadows Reservoir, SW of Westwood
1537
Comment
NY627269
Penstemon neotericus
C. B. Wolf
1937-8-7
9068
Lassen
Northern Sierra Nevada, Red Bluff-Susanville Road, 11.5 miles east of Chester
1493.5
Comment
RSA21708
Penstemon neotericus
Carl B. Wolf
1937-8-7
9068
Lassen
Northern Sierra Nevada. Red Bluff -Susanville Road, 11.5 mi E of Chester.
1494
Comment
UC887182
Penstemon neotericus
A. A. Heller
1938-7-28
15294
Lassen
between Chester and Westwood; between Chester and Westwood
1524
Comment
SEINET3836566
Penstemon newberryi subsp. newberryi
Marcus E. Jones
1897-7-7
Lassen
Lassen's Peak
1829
Comment
CAS-BOT-BC239220
Penstemon newberryi var. berryi
Hans Leschke
1957-7-12
s.n.
Lassen
Lassen Volcanic National Park, above Cold Boiling Lake
2377
Comment
CHSC36449
Penstemon roezlii
Susan H. Euing
1982-6-4
3
Lassen
Ca. 0.5 mi e of Murrers Upper Meadow on road leading to meadow.
Comment
CHSC37349
Penstemon roezlii
Jennifer Estep
1978-6-27
19
Lassen
Dry L., E of Eagle L.
1645
Comment
CHSC4267
Penstemon roezlii
K. R. Stern
1967-6-24
2417
Lassen
Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station.
1554
Comment
CHSC5913
Penstemon roezlii
R. Gein
1946-6-26
Lassen
Eagle Lake. Pine Creek bridge.
1584
Comment
POM44786
Penstemon roezlii
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
SEINET12326936
Penstemon rydbergii
L. E. Ray
1967-1
100
Lassen
8 mi S ELBS, Deans Meadow
1951
Comment
CAS-BOT-BC239495
Penstemon rydbergii var. oreocharis
Leland S. Smith
1927-7-1
49
Lassen
Lassen National Forest, at Bogard Ranger Station
Comment
CHSC12939
Penstemon rydbergii var. oreocharis
K. R. Stern
1974-6-26
5869
Lassen
E end of Champs flat.
Comment
CHSC1878
Penstemon rydbergii var. oreocharis
K. Chew
1954-7-6
Lassen
Along Pine Creek, 1 mi. below Stephens meadows.
1828
Comment
CHSC99300
Penstemon rydbergii var. oreocharis
Lowell Ahart; John Dittes
2008-6-20
14919
Lassen
About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
NY651296
Penstemon rydbergii var. oreocharis
L. Constance
1938-6-10
2322
Lassen
1.5 miles northeast of Robber Creek, near Westwood
1219.2
Comment
RSA0115350
Penstemon rydbergii var. oreocharis
Lowell A. Ahart, John Dittes
2008-6-20
14919
Lassen
About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
UC1142926
Penstemon rydbergii var. oreocharis
A. L. Hormay
1941-6-25
22
Lassen
Burgess Spring Lassen National Forest, Burgess Spring
1676
Comment
UC506978
Penstemon rydbergii var. oreocharis
George A. Fischer and Irwin H. Johnson
1933-7-12
F 228
Lassen
Patterson Flat Lassen National Forest, Patterson Flat
1737
Comment
CHSC12458
Penstemon speciosus
Robert W. Severin
1969-6-20
2
Lassen
4 miles s of E. L. B. S. in Dean's Meadow.
1950
Comment
NY660816
Penstemon speciosus
G. Schoolcraft
1990-7-2
2100
Lassen
Southwest slopes of Cold Springs Mountain
1890
Comment
NY660832
Penstemon speciosus
F. W. Pennell
1940-6-9
25753
Lassen
Route 395, 5 miles north of Madeline
1676.4
Comment
NY661007
Penstemon speciosus
A. J. Cronquist
1959-6-16
8455
Lassen
26 miles northwest of Reno
Comment
CAS-BOT-BC239665
Penstemon sudans
John Thomas Howell; Gordon H. True
1973-8-1
50153
Lassen
Gold Run Creek road south of Susanville, Diamond Range
1584
Comment
CAS-BOT-BC243406
Penstemon sudans
G. Schoolcraft
1998-7-14
2761
Lassen
NE of Shaffer Mtn.
1356
Comment
CHSC13647
Penstemon sudans
M. S. Taylor
1974-7-13
310
Lassen
Ca 15 ft w of Mohagany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville.
1524
Comment
NY661802
Penstemon sudans
W. W. Eggleston
1911-7-7
7177
Lassen
Secret Valley
1330
Comment
NY661807
Penstemon sudans
B. J. Ertter
1987-6-16
7178
Lassen
Skeedaddle Mountains on northeast side of Honey Lake, ca. 1 mile west of Hot Springs VABM
1828.8
Comment
UC423647
Penstemon sudans
David D. Keck
1930-7-23
953
Lassen
4 mi w Susanville; Sierra Nevada
1463
Comment
CDA26041
Peraphyllum ramosissimum
T. C. Fuller, R. C. Bechtel, R. Bradley
1981-7-9
20382
Lassen
On slope above the west side of Smoke Creek Reservoir.
0
Comment
CHSC29907
Perideridia bolanderi
Robin Ondricek; Wesley Dempsey
1978-6-7
43
Lassen
Ridge E of Lower Dry Lake, 12.5 mi N of Susanville.
1706
Comment
RSA0065395
Perideridia bolanderi
M. P. Harthill
1971-6-21
230
Lassen
Ravendale.
Comment
CHSC42647
Perideridia bolanderi subsp. bolanderi
Vernon Oswald
1986-5-28
2049
Lassen
Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass.
1691
Comment
CHSC85820
Perideridia bolanderi subsp. bolanderi
David French
1968-6-2
2881
Lassen
Near State Hwy. 36, 13.8 mi E of Westwood, 5.1 mi E of Fredonyer Pass; roughly 8 mi W of Susanville.
Comment
UC1523773
Perideridia oregana
Gary Schoolcraft
1971-7-13
503
Lassen
near Silva Flat
1719
Comment
SEINET3088961
Peritoma platycarpa
N. H. Holmgren, Patricia K. Holmgren
1978-6-11
8928
Lassen
Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale.
1700
Comment
CAS-BOT-BC423345
Peritoma platycarpa
Roxana S. Ferris; Rena Duthie
1919-6-11
13
Lassen
Murry on N.C.O. line
Comment
OBI48093
Peritoma platycarpa
Rhonda Riggins
1989-4-27
1638
Lassen
Wash through volcanic boulder pavement, US395, 8.4 mi N. Litchfield, 26.6 mi S Rav endale
1311
Comment
JEPS1608
Phacelia adenophora
Mrs. C. C. Bruce
June 1898
2198
Lassen
Madeline Plains
Comment
JEPS79216
Phacelia adenophora
L. R. Heckard with R. C. Bacigalupi
1980-6-11
5264
Lassen
along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy)
1463
Comment
RSA293371
Phacelia adenophora
Reino Alava
1957-7-5
1136
Lassen
4.8 miles south of Ravendale on Highway 395.
Comment
RSA38632
Phacelia adenophora
P. A. Munz
1947-5-19
11872
Lassen
19 miles south of Ravendale.
1341
Comment
RSA715550
Phacelia bicolor
L. Ahart, John Dittes
2005-6-1
11886
Lassen
On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction.
1434
Comment
CHSC91316
Phacelia bicolor var. bicolor
Lowell Ahart; John Dittes
2005-6-1
11886
Lassen
On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction.
1433
Comment
JEPS29745
Phacelia bicolor var. bicolor
Rimo Bacigalupi and L. R. Heckard
1962-5-28
8500
Lassen
junction of cut-off road to Standish and Litchfield (Lassen Co. A3) with U.S. highway 395
1219
Comment
JEPS94704
Phacelia bicolor var. bicolor
Vernon H. Oswald and Lowell Ahart
1998-5-22
9132
Lassen
6 mi ne of Doyle (3.5 mi e of Fort Sage Road, near the summit of the dirt road in the Fort Sage Mountains); Fort Sage Mountains
1737
Comment
UC1924219
Phacelia hastata
Debra Valov
2004-6-9
2004257
Lassen
Hwy 139 c. 1 km S of Junction of County A2
1356
Comment
JEPS107796
Phacelia hastata subsp. compacta
Lowell Ahart, John Dittes
2005-6-2
11950
Lassen
Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction
1498
Comment
CHSC14060
Phacelia hastata subsp. hastata
K. R. Stern; D. B. Joley, J. G. Geschke
1974-6-22
5818
Lassen
Patch of dark volcanic ash in sagebrush area, ca. 16.5 mi w of Madeline, on Madeline-Adin Road.
1548
Comment
CHSC59550
Phacelia hastata subsp. hastata
Mary Meyer
1980-7-22
519
Lassen
Top of Fredonyer Peak, north of sharp bend in road at top, in rock outcrops.
2346
Comment
UC773947
Phacelia heterophylla subsp. virgata
L. R. Short and Wm. Gansberg
1936-7-9
S- 478
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1795
Comment
RSA638996
Phacelia heterophylla subsp. virgata
Michael A. Vincent
1999-6-9
8585
Lassen
Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield.
1524
Comment
JEPS2119
Phacelia humilis
Brown and Wieslander
1922-7-18
63
Lassen
Martin Sprs. Eagle Lake
Comment
JEPS2120
Phacelia humilis
Franklin P. Nutting
1894-7-12
Lassen
Pine Creek
Comment
POM73344
Phacelia humilis var. humilis
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
UC764434
Phacelia inundata
Verne Grant
1947-9-5
8374
Lassen
nw shore of lake by Sam Webb's place (Spaldings); Eagle Lake
Comment
CHSC26176
Phacelia linearis
J. P. Kroessig
1977-5-23
36
Lassen
Eagle Lake Biological Station ca 37 km nnw of Susanville.
1570
Comment
CHSC59551
Phacelia linearis
Mary Meyer
1980-5-20
Lassen
Common along ridges above Secret Creek.
1432
Comment
JEPS2134
Phacelia linearis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
near Chat; Honey Lake Valley
Comment
JEPS94103
Phacelia linearis
Vernon H. Oswald and Lowell Ahart
1998-5-22
9106
Lassen
ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts.
1371
Comment
SFV3020
Phacelia linearis
I. L. Wiggins, D. B. Wiggins
1961-6-16
16530
Lassen
Big Valley Mountains. South-facing road-cut slope, 0.8 miles west of summit of Big Velley Pass.
1380
Comment
RSA303850
Phacelia linearis
Jim R. Shevock
1972-5-20
1819
Lassen
Highway 395, Honey Lake.
1311
Comment
UCD20363
Phacelia linearis
Joe DiTomaso
2002-6-4
s.n.
Lassen
Lassen County, about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville.
Comment
NY1056435
Phacelia lutea var. glandulifera
R. R. Halse
1974-6-27
1055
Lassen
In a road cut along U.S. Highway 395, 5.4 miles south of Ravendale
1620
Comment
HSC13645
Phacelia mutabilis
M. T. Milligan
1964-7-16
134
Lassen
2 mi. N on the Silver Lake Rd., along Upper Susan River.
1829
Comment
JEPS17909
Phacelia procera
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5433
Lassen
along upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Cr.
1767
Comment
SEINET7926036
Phacelia ramosissima var. eremophila
Robert L. Johnson, Mikel R. Stevens
2015-7-10
3931
Lassen
0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0
1261
Comment
UC107342
Phacelia ramosissima var. eremophila
T. S. Brandegee
1892-6-29
Lassen
Janesville
Comment
CHSC27604
Phacelia ramosissima var. ramosissima
N. E. Heiken
1978-7-27
51
Lassen
SE side of Eagle Lake.
1554
Comment
CHSC64879
Phacelia thermalis
Vernon H. Oswald; Lowell Ahart
1995-6-19
6902
Lassen
Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395.
1444
Comment
JEPS109642
Phacelia thermalis
Dean W. Taylor
2002-6-21
18170
Lassen
Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley
1524
Comment
RSA40730
Phacelia thermalis
C. L. Hitchcock
1940-5-26
6641
Lassen
Overflow of Pitt River, 1 mile W of Bieber
Comment
CAS-BOT-BC250847
Phleum pratense
John Thomas Howell; Gordon H. True; Margaret Williams; Louella Bass
1973-6-28
49504
Lassen
Elysian Valley, west of Janesville
1325
Comment
CHSC41845
Phleum pratense
P. V. Caldwell
1972-7-12
272
Lassen
Eagle Lake. On banks from Eagle Lake to Papoose Meadows on Papoose Creek.
Comment
UC1100415
Phleum pratense
Herbert L. Mason and Verne Grant
1947-7-9
13303
Lassen
5 mi e Bieber (irrigation ditch)
Comment
CHSC35954
Phlox diffusa
M. S. Taylor
1982-5-7
4430
Lassen
Reno Junction and along old road parralleling Hwy 70, just e of Beckwourth Pass.
1676
Comment
UC1124221
Phlox gracilis
A. Simontacchi
1940-5-10
690
Lassen
7.3 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad.
1752
Comment
OBI77067
Phlox hoodii subsp. canescens
Anthony Baniaga
2011-6-7
311
Lassen
Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE
1747
Comment
CHSC4772
Phlox speciosa
R. Carter
1967-6-27
563
Lassen
Ca. 5 yds. off N side of Rd.
Comment
CHSC1306
Phlox speciosa subsp. occidentalis
M. Anthony
1953-4-27
Lassen
Susanville.
1280
Comment
JEPS69990
Phlox speciosa subsp. occidentalis
Leland S. Smith
1918-5-12
922
Lassen
Hayden Hill, s end of Modoc National Forest Modoc National Forest
Comment
OBI76927
Phlox speciosa subsp. occidentalis
Anthony Baniaga
2011-6-11
333
Lassen
Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21
1623
Comment
RSA715614
Phlox speciosa subsp. occidentalis
L. Ahart, John Dittes
2005-6-1
11846
Lassen
On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction.
1449
Comment
RSA104310
Phlox speciosa subsp. occidentalis
Verne Grant, Alva Grant
1956-5-17
9797
Lassen
Just north of Milford on Highway 395
1311
Comment
NY963724
Phlox speciosa var. occidentalis
W. W. Eggleston
1911-5-29
6733
Lassen
Vicinity of Doyle Station
1290
Comment
CHSC36482
Phlox stansburyi
Margaret E. Halloran
1982-6-4
7
Lassen
3 1/2 mi s of jct of 5.17 and 5.16 on 5.17.
Comment
CHSC71130
Phlox stansburyi
Vernon H. Oswald; Lowell Ahart
1998-5-22
9114
Lassen
Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca 5 mi NNE of Doyle.
1402
Comment
UC465863
Phoradendron densum
Milo S. Baker
1900-7-6
Lassen
s. side Dixey Mts.
Comment
CDA19731
Phyllodoce breweri
J. Chattin
August 1947
s.n.
Lassen
Northern California; Silver Lake.
0
Comment
UC1037196
Phyllodoce breweri
Leo Whitney
1934-9-16
1518
Lassen
Lassen National Park, nw edge of Bumpass Hell Bumpass Hell; Lassen National Park, Bumpass Hell
2560
Comment
HSC1474
Pinus contorta
R. A. Magie
1964-5-1
61
Lassen
15 mi. W of Susanville on Hwy. 44
1524
Comment
NY61587
Pinus jeffreyi
K. Morris
1973-5-25
219
Lassen
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
SEINET10530757
Pinus jeffreyi
Jeffrey Huber
1971-6-2
Huber 141
Lassen
6 mi N of Halleluja Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash.
1402
Comment
CHSC12502
Pinus lambertiana
Carol Weld
1969-6-20
13
Lassen
Road between Five Corners and Dean's Meadow.
1889
Comment
SEINET12521273
Pinus ponderosa var. ponderosa
J. Mapes
s.n.
Lassen
Susanville Peak Area. NW corner of Township
Comment
RSA123889
Plagiobothrys bracteatus
A. Simontacchi
1940-5-14
715
Lassen
10.2 miles east of Coyote Springs
1700
Comment
UC1594603
Plagiobothrys cognatus
Vernon H. Oswald and Lowell Ahart
1992-7-16
5113
Lassen
between Old Station and Susanville (on s side of Hwy 44, Bridge Creek entering McCoy Flat Reservoir); Bridge Cree, McCoy Flat Reservoir
1691
Comment
UC526162
Plagiobothrys cognatus
John Thomas Howell
1934-6-10
11890
Lassen
15 mi. n. Susanville (on rd. to Horse Lake)
Comment
CHSC58837
Plagiobothrys cusickii
Vernon H. Oswald; Lowell Ahart
1992-7-16
5113
Lassen
Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville.
1691
Comment
JEPS120895
Plagiobothrys cusickii
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18772
Lassen
About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
JEPS127173
Plagiobothrys cusickii
Lowell Ahart, John Dittes
2016-7-15
21212
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
SJSU8035
Plagiobothrys cusickii
J. W. Tilden
1960-6-27
1518
Lassen
5 mi E of Westwood by Moonlight Rd
1524
Comment
CAS-BOT-BC224976
Plagiobothrys hispidulus
Clarence R. Quick
1962-6-17
62 27 C
Lassen
Swains Hole, S of Blacks Mountains Experimental Station
1615
Comment
CHSC59082
Plagiobothrys hispidus
Vernon H. Oswald; Lowell Ahart
1992-8-25
5193
Lassen
Lassen Volcanic National Park. West shore of Snag Lake SW of the islands.
1851
Comment
UC1618198
Plagiobothrys hispidus
Barbara Ertter
1987-7-25
7318
Lassen
Hwy. 44 ca. 1 mi. e. Shasta Co. line (s. of hwy.)
1645
Comment
CHSC64872
Plagiobothrys leptocladus
Vernon H. Oswald; Lowell Ahart
1995-6-19
6896
Lassen
Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395.
1383
Comment
UC1191065
Plagiobothrys mollis
Robert Ornduff
1959-7-18
5060
Lassen
1 mi e Madeline (on road from Madeline to the Patterson Ranger Station); Modoc National Forest
Comment
CHSC116091
Plagiobothrys mollis var. mollis
Lowell Ahart; John Dittes
2015-7-13
20306
Lassen
About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC66721
Plagiobothrys mollis var. mollis
Vernon H. Oswald; Lowell Ahart
1996-8-1
8112
Lassen
Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam.
1539
Comment
RSA39738
Plagiobothrys scouleri var. hispidulus
P. A. Munz
1947-5-20
11891
Lassen
Milford.
1265
Comment
JEPS107448
Plagiobothrys tenellus
Lowell Ahart, John Dittes
2005-6-1
11883
Lassen
Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction
1438
Comment
POM89198
Plagiobothrys tenellus
Milo S. Baker
1890-1
s.n.
Lassen
Milford.
Comment
SEINET10972868
Plagiobothrys tenellus
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17760
Lassen
Approx. 12 mi S of Adin on CA Hwy 139.
1372
Comment
SBBG19323
Plagiobothrys torreyi
C. B. Hardham
1961-6-17
7509
Lassen
Baxter Crk, S of Susanville
1676
Comment
SJSU9125
Platanthera dilatata var. leucostachys
H. L. Buckalew
1961-7-2
Lassen
Blue Lake near Blue Lake Road
Comment
UC845587
Platanthera leucostachys
A. A. Heller
1938-7-28
15298
Lassen
about 1 mi e Westwood
1524
Comment
CHSC99738
Plectritis macrocera
Lowell Ahart; John Dittes
2008-6-20
14971
Lassen
About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber.
1263
Comment
RSA433737
Plectritis macrocera
Christopher Davidson
1975-6-7
2754
Lassen
1 mile E of Beckwourth Pass on Hwy 70.
1524
Comment
SEINET8658736
Plectritis macrocera
C. G. Gulling
1905-1
s.n.
Lassen
Big Meadows.
Comment
CHSC36850
Pleiacanthus spinosus
M. S. Taylor
1982-8-19
5020
Lassen
Along old RR grade, s of and paralleling Hwy 70, just se of Beckwourth Pass on Plumas-Lassen county line.
1584
Comment
CHSC50824
Pleiacanthus spinosus
Vernon Oswald; Lowell Ahart
1990-7-25
4395
Lassen
Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. Roadside bank.
1463
Comment
CHSC7736
Pleiacanthus spinosus
Beverley J. Wise
1969-5-23
79
Lassen
33.5 mi. S.E. of Susanville on Las. Co. Rd. 320.
1249
Comment
UC1924231
Poa bulbosa
Debra Valov
2004-6-9
2004261
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1274
Comment
UCD54537
Poa bulbosa
Ellen Dean; Petra Unger, Dawn Cunningham
2005-10-10
2722
Lassen
E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area.
1247
Comment
CHSC112468
Poa bulbosa subsp. vivipara
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18748
Lassen
About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
UC1024877
Poa compressa
Leo Whitney
1935-5-26
3147
Lassen
10 mi e Adin (Ash Creek)
Comment Read comments Jun 24 2009
UC1533157
Poa cusickii subsp. cusickii
G. Schoolcraft
1986-6-25
1644
Lassen
3 mi nw Termo
1615
Comment
CAS-BOT-BC247319
Poa pratensis
Louella Bass
1973-5-29
EU 67
Lassen
Elysian Valley
1325
Comment
UC1024691
Poa pratensis subsp. pratensis
Leo Whitney
1933-8-2
2154
Lassen
ca 8 mi nw Eagle Lake (Slate Creek); Lassen Nat'l Forest
1920
Comment
RSA647525
Poa secunda
Marion P. Harthill
1972-6-17
824
Lassen
Madeline.
1677
Comment
UC1924591
Poa secunda
Debra Valov
2006-5-28
2006001
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1284
Comment
UCD90323
Poa secunda
A. A. Beetle; G. L. Stebbins Jr.
1942-5-29
3367
Lassen
5.2 miles E of Bieber, Big Valley.
Comment
UCD90454
Poa secunda
L. Whitney
1933-8-1
s.n.
Lassen
Harvey Mountain.
Comment
CHSC33318
Poa secunda subsp. juncifolia
P. Reynolds
1979-7-4
18
Lassen
3 mi. NE of Wendel, Wendel Canyon in the Skedaddle Mtn. Range.
1371
Comment
UC1024690
Poa secunda subsp. juncifolia
Leo Whitney
1933-7-15
2155
Lassen
ca 16 mi w of upper end Eagle Lake (Harvey Mt); Lassen Nat'l Forest
1981
Comment
UC1024831
Poa secunda subsp. juncifolia
Leo Whitney
1935-6-12
3229
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UC1024949
Poa secunda subsp. juncifolia
Leo Whitney
1935-6-27
3317
Lassen
ca 13 mi w of n end Eagle Lake; Squaw Valley
Comment
UCD92157
Poa secunda subsp. juncifolia
A. A. Beetle; G. L. Stebbins Jr.
1942-5-29
3370
Lassen
5.2 miles E of Bieber, Big Valley.
Comment
JEPS127637
Poa secunda subsp. nevadensis
Alejandro Brambila, Michael Dolan
2016-6-27
CA 320 -151
Lassen
Northwest of Madeline Plains up Anderson Canyon to Spooner Reservoir.
Comment
CAS-BOT-BC236177
Poa secunda subsp. secunda
Doris Kildale Gillespie
1930-5-14
9379
Lassen
Fredonia Pass near Susanville
Comment
HSC38602
Poa secunda subsp. secunda
J. P. Smith, J. O. Sawyer
1971-5-23
4660
Lassen
Along Hwy. 139, 23 miles south of junction with road to Thermo.
Comment
UC1024818
Poa secunda subsp. secunda
Leo Whitney
1935-6-19
3261 a
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UC1132876
Poa secunda subsp. secunda
A. Simontacchi
1940-5-17
737
Lassen
5.9 mi s Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle
Comment
UC1132882
Poa secunda subsp. secunda
A. Simontacchi
1940-5-17
747
Lassen
1.1 mi ssw Dixie Spring; Lassen Nat'l Forest, Halls Flat Quadrangle
Comment
UC1024806
Poa wheeleri
Leo Whitney
1935-6-23
3287
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UC1024823
Poa wheeleri
Leo Whitney
1935-6-13
3241
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UC1024873
Poa wheeleri
Leo Whitney
1935-5-26
3154
Lassen
10 mi e Adin (Ash Creek)
Comment
RSA0036995
Polemonium micranthum
Lowell A. Ahart, John Dittes, Todd Sloat
2013-6-8
18743
Lassen
About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
UC449772
Polemonium occidentale
Franklin P. Nutting
1894-7-28
Lassen
Bridge Creek Bridge Creek (Northern California)
Comment
POM74373
Polemonium occidentale
Marcus E. Jones
1897-6-30
s.n.
Lassen
Susanville, 4 miles below Eagle Lake.
1524
Comment
SEINET258241
Polyctenium fremontii var. confertum
Arnold Tiehm, Jan Nachlinger, Margaret Williams
1988-6-2
11703
Lassen
6.6 road miles north of the Wendel Road on Hwy. 295 from Susanville to Alturas. T30N R15E Sec 15
1350
Comment
CHSC117618
Polygala subspinosa
L. P. Janeway and B. Castro
2015-6-5
11765
Lassen
Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn.
1731
Comment
NY1002472
Polygala subspinosa
H. D. D. Ripley
1943-6-15
5760
Lassen
East of Viewland
1311
Comment
UC726504
Polygala subspinosa
A. A. Heller
1938-6-23
15213
Lassen
stony wash s Secret Valley; ; S of Secret Valley, Shasta [=Lassen] Co.
Comment Read comments Oct 19 2007
UC1136918
Polygonum
George A. Fischer, Irwin H. Johnson
1933-7-12
F 192
Lassen
Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley
1694
Comment
CHSC76287
Polygonum aviculare
Lowell Ahart; Vernon H. Oswald
1999-9-13
8225
Lassen
Along a small slough, on the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish.
1210
Comment
SEINET10479337
Polygonum aviculare
Mary Susan Taylor
1982-8-19
Taylor 5021
Lassen
T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft.
1493
Comment
JEPS81643
Polygonum aviculare subsp. neglectum
M. S. Taylor
1982-8-19
5021
Lassen
e side of Hwy 395 ca 4 mi n jct with Hwy 70 at Hallalujah Junction; Beckwourth Pass quad.
1493
Comment
UC1136194
Polygonum bistortoides
Robert W. Gardner
1937-6-20
G- 20
Lassen
Burgess Spring Halls Flat Quadrangle
Comment
UC1562677
Polygonum davisiae
Barbara Ertter
1988-7-25
7863
Lassen
ridge ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville); Diamond Mts.
2286
Comment
UC1136177
Polygonum douglasii subsp. douglasii
E. Sawyer
1935-6-27
215
Lassen
Long Valley Sierraville Quadrangle
Comment
JEPS51271
Polygonum douglasii subsp. spergulariiforme
Brown and Wieslander
1922-7-20
88
Lassen
Martin Sprs. Eagle Lake
Comment
UC773926
Polygonum douglasii subsp. spergulariiforme
L. R. Short
1936-9-30
S- 501
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1767
Comment
UC850047
Polygonum douglasii subsp. spergulariiforme
M. S. Baker and F. Nutting
1894-1
Lassen
Lassen Co.
Comment
UC1101117
Polygonum persicaria
Malcolm A. Nobs and S. Galen Smith
1949-8-20
1472
Lassen
1 mi s Milford; Honey Lake Valley
Comment
CHSC58506
Polygonum polygaloides subsp. confertiflorum
Vernon H. Oswald
1992-7-3
5049
Lassen
Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1 mi N of Cameron Meadow.
1950
Comment
CHSC61055
Polygonum polygaloides subsp. confertiflorum
Vernon H. Oswald; Lowell Ahart
1993-8-3
5748
Lassen
Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Locally abundant in small patches of more or less bare ground along the E side of the swamp.
1932
Comment
UC1258493
Polygonum polygaloides subsp. confertiflorum
G. Schoolcraft
1980-7-16
313 B
Lassen
Nelson Corral Reservoir area; Bureau of Land Management
1804
Comment
UC1520661
Polygonum polygaloides subsp. confertiflorum
Noel H. Holmgren and Patricia K. Holmgren
1980-7-3
9466
Lassen
along US 395 5.6 km (3.5 mi) s Madeline; Madeline Plains
1620
Comment
CHSC27120
Polygonum polygaloides subsp. kelloggii
Robert A. Schlising
1978-6-29
3297
Lassen
E of Eagle Lake; dry creek bed just N of Murrers Meadow and Spring. In area of Pinus jeffreyi forest.
1536
Comment
UC1136191
Polygonum polygaloides subsp. kelloggii
A. Simontacchi
1940-5-21
760
Lassen
4.1 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle
Comment
RSA122836
Polygonum sawatchense
L. R. Short, J. Warren
1936-06
s 420
Lassen
Burgess Spring, Exp Range.
1857
Comment
RSA122845
Polygonum sawatchense
L. R. Short
1936-5-22
6025
Lassen
Burgess Spring, Exp Range.
1837
Comment
RSA466330
Polygonum sawatchense
J. T. Howell
1934-7-6
12528
Lassen
Harvey Valley
Comment
UC6701
Polygonum sawatchense subsp. sawatchense
M. S. Baker and Frank Nutting
1894-7-3
Lassen
Dixey Valley
Comment
UC465764
Polygonum shastense
Franklin P. Nutting
Lassen
Silver Lake
Comment
SBBG119830
Polygonum spergulariiforme
L. Ahart
2003-8-17
10515
Lassen
E side of Hwy 36, ca. 0.25 air mi SW of the Susan River, ca. 8 air mi SW of Susanville
1433
Comment
CAS-BOT-BC420977
Polygonum spergulariiforme
Clarence R. Quick
1964-7-29
64 -87
Lassen
Blacks Mt. Experimental Forest
1798
Comment
CHSC112799
Polypogon monspeliensis
Lowell Ahart; John Dittes
2013-7-22
18874
Lassen
Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
UC1100382
Polypogon monspeliensis
Malcolm A. Nobs and S. Galen Smith
1949-7-20
1052
Lassen
four mi w Adin
Comment Read comments Jun 24 2009
JEPS23859
Porterella carnosula
Peter H. Raven with Otto T. Solbrig
1958-6-17
13294
Lassen
along United States Highway 395, 4.8 mi s Madeline
Comment
JEPS96122
Porterella carnosula
Vernon H. Oswald and Lowell Ahart
1996-6-24
7854
Lassen
2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), w side Papoose Meadows, ca 0.3 mi s of the cabins); Modoc Plateau, Papoose Meadows
1633
Comment
UC1483818
Porterella carnosula
G. Schoolcraft
1980-7-16
318
Lassen
Nelson Corral Reservoir
1804
Comment
UC1573183
Porterella carnosula
Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck
1988-6-6
9007
Lassen
road from Bieber to Lookout 0.5 mi s Modoc County Line (Big Valley, Pit River Watershed); Pit River Watershed, Big Valley
1249
Comment
UC526144
Porterella carnosula
John Thomas Howell
1934-7-7
12466
Lassen
near Feather Lake; near Feather Lake
Comment
SEINET10460820
Porterella carnosula
Taylor
1988-6-6
Taylor 9007
Lassen
Road from Bieber to Lookout, 0.5 miles south of the Modoc County Line
1250
Comment
CHSC4839
Potamogeton
R. Carter
1967-7-13
595
Lassen
Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek.
1560
Comment
JEPS103225
Potamogeton alpinus subsp. tenuifolius
G. Schoolcraft
1996-9-11
2564
Lassen
Willow Creek below petroglyphs and above dam
1432
Comment
JEPS109625
Potamogeton diversifolius
Dean W. Taylor
2002-6-21
18177
Lassen
stock pond ca. 1 mile SW of McCleland Reservoir
1584
Comment
CHSC4840
Potamogeton filiformis
R. Carter
1967-7-13
594
Lassen
Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek.
1560
Comment
SEINET3892719
Potamogeton foliosus
Daniel B. Marcum
2007-7-25
s.n.
Lassen
6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field.; 0
1280
Comment
UC2046022
Potamogeton natans
Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting
2004-8-24
11167
Lassen
Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way.
Comment
UC1099819
Potamogeton pectinatus
Malcolm A. Nobs, S. Galen Smith
1949-8-20
1491
Lassen
1 mi s Doyle; Long Creek
Comment
UC1100077
Potamogeton pectinatus
Verne Grant, Irving Schneider
1947-7-30
8196
Lassen
w end of Tule Lake
Comment
UC60851
Potamogeton striatus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3357
Lassen
marsh near Amedee; Honey Lake Valley
Comment
CAS-BOT-BC540031
Potentilla biennis
Verne Grant; Irving Schneider
1947-7-30
8189
Lassen
South point of west embayment, Tule Lake
Comment
CAS-BOT-BC143111
Potentilla breweri
M. S. Baker; Frank Nutting
1894-7-28
s.n.
Lassen
Bridge Creek
Comment
JEPS44188
Potentilla fruticosa
Brown and Wieslander
1922-7-25
4
Lassen
Martin Sprs , Martin Sprs (Eagle Lake)
Comment
POM366534
Potentilla glandulosa subsp. ashlandica
Rockwell
1925-7-1
s.n.
Lassen
Eagle Lake
Comment
UC1136906
Potentilla gracilis var. fastigiata
L. R. Short and W. McNulty
1936-6-17
S- 443
Lassen
Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range
1767
Comment
UC1136994
Potentilla millefolia
George A. Fischer, Irwin H. Johnson
1933-7-14
F 240
Lassen
Patterson R. S. Lassen National Forest, Patterson R. S.
1737
Comment
CAS-BOT-BC158516
Potentilla millefolia
1927-6-10
7
Lassen
Lassen National Forest, Norval Flat
1747
Comment
JEPS126563
Poterium sanguisorba
Lowell Ahart, John Dittes
2016-6-7
20998
Lassen
On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
CHSC30570
Prunella vulgaris
Sori H. Shad
1970-6-24
31
Lassen
Collected in upper Murrer's Meadow.
1524
Comment
CAS-BOT-BC159778
Prunus andersonii
Paul Gallian; B. J. Cox
1971-6-2
486
Lassen
5 miles South of Milford near Honey Lake on U.S. Hwy. 395
1249
Comment
CHSC71098
Prunus andersonii
Vernon H. Oswald; Lowell Ahart
1998-5-22
9119
Lassen
Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle.
1447
Comment
OBI77048
Prunus andersonii
Anthony Baniaga
2011-7-1
412
Lassen
Ownership unk. E of Doyle, alongrd to Fort Sage Mts.
1288
Comment
SEINET3157217
Prunus andersonii
E. K. Balls
1950-5-9
15947
Lassen
6 mi S of Doyle, hwy 395
1372
Comment
CDA34466
Prunus andersonii
B. Villegas
2011-3-26
s.n.
Lassen
Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection.
0
Comment
SEINET3850947
Prunus virginiana
Dwayne Estes
2004-1
06028
Lassen
SE side of Horse Lake along E roadside
1554
Comment
UC1128504
Prunus virginiana var. demissa
A. Simontacchi
1940-6-4
800
Lassen
7.1 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest
1836
Comment
CAS-BOT-BC357282
Pseudognaphalium microcephalum
Margaret Williams
1974-7-27
74 -L-54
Lassen
Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70
1493
Comment
CAS-BOT-BC239800
Pseudoroegneria spicata
John Thomas Howell
1976-7-20
51997
Lassen
About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek
1432
Comment
CAS-BOT-BC239804
Pseudoroegneria spicata
David D. Keck
1944-7-8
5450
Lassen
1.5 mi. W. of Susanville on rim of plateau overlooking Susan River Canyon
1341
Comment
UC1143002
Pseudoroegneria spicata subsp. spicata
August L. Hormay
1934-5-15
Lassen
15 mi n of Hall's Flat (Lassen Forest and Range Experiment Station, Lassen National Forest); Lassen Forest and Range Experiment Station, Lassen National
1524
Comment
UC718009
Pseudoroegneria spicata subsp. spicata
David D. Keck
1944-7-8
5450
Lassen
1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada
1341
Comment
JEPS51149
Pseudostellaria jamesiana
Brown and Wieslander
1922-7-28
51
Lassen
Martin Sprs. Eagle Lake; , Martin Sprs
Comment
UC1136876
Pseudostellaria jamesiana
L. R. Short and Wm. Gansberg
1936-6-16
S- 438
Lassen
Burgess Spring Experimental Range; Lassen Forest
1883
Comment
CAS-BOT-BC174802
Pseudostellaria jamesiana
Mrs. H. C. Cantelow
1949-6-11
7
Lassen
Summit of Fredonyer Pass
Comment
CHSC112453
Psilocarphus brevissimus var. brevissimus
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18756
Lassen
About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC27600
Psilocarphus brevissimus var. brevissimus
J. D. Prouty
1978-6-28
4
Lassen
Lower Dry Lakes, SE of Eagle L.
Comment
POM27927
Psoralidium lanceolatum
Marcus E. Jones
1897-6-22
s.n.
Lassen
10 miles south of Amedee. [Lassen or Plumas Co.]
1220
Comment
CAS-BOT-BC72538
Pteridium aquilinum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49175
Lassen
Elysian Valley northwest of Janesville
1325
Comment
HSC89839
Pteridium aquilinum var. pubescens
Gary Schoolcraft
1980-8-13
353
Lassen
N side of Diamond Mtn. on timber sale site
189
Comment
CHSC105259
Pterospora andromedea
Lowell Ahart; John Dittes
2010-7-31
17007
Lassen
On the sout side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1516
Comment
RSA32005
Pterospora andromedea
A. A. Heller
1938-7-28
15302
Lassen
About 2 miles E of Westwood
1524
Comment
UCD91531
Puccinellia distans
Beecher Crampton
1964-6-27
7098
Lassen
Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area.
1981
Comment
CHSC112789
Puccinellia lemmonii
Lowell Ahart; John Dittes, Todd Sloat
2013-6-9
18788
Lassen
Depression, on the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp.
1007
Comment
CHSC93243
Puccinellia lemmonii
John Dittes; Scott Chamberlain
2004-6-28
1015
Lassen
Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow.
1445
Comment
CHSC99494
Puccinellia lemmonii
Lowell Ahart; John Dittes
2008-6-20
14967
Lassen
Saline area, about 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
JEPS114875
Puccinellia lemmonii
Lowell Ahart, John Dittes
2008-6-20
14967
Lassen
Saline area, about 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
CDA32666
Puccinellia lemmonii
Gary Schoolcraft
2000-6-19
2906
Lassen
Flat southeast of Ravendale BLM Fire Station.
0
Comment
NY848524
Purshia tridentata
D. B. Dunn
1971-6-2
17784
Lassen
6 miles north of Hallelujah junction on U.S. Hwy 395
1402
Comment
UCR17285
Purshia tridentata
Frank C. Vasek
1975-7-11
750711- 36
Lassen
Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139
1829
Comment
CAS-BOT-BC147819
Purshia tridentata var. tridentata
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-10
16321
Lassen
Along California Highway 36, about 6 miles W of Susanville
Comment
CAS-BOT-BC147821
Purshia tridentata var. tridentata
Alice Eastwood; John Thomas Howell
1940-6-16
8341
Lassen
Janesville
Comment
CAS-BOT-BC147823
Purshia tridentata var. tridentata
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49161
Lassen
Elysian Valley northwest of Janesville
1325
Comment
RSA252505
Purshia tridentata var. tridentata
Robert F. Thorne, C. W. Tilforth
1969-9-6
39253
Lassen
Ca 14 miles SE of Milford along Long Valley Creek.
1311
Comment
UC12421
Purshia tridentata var. tridentata
M. S. Baker and Frank Nutting
1894-7-9
Lassen
Pine Creek
Comment
UC773873
Purshia tridentata var. tridentata
L. R. Short and Wm. Gansberg
1936-7-9
S- 482
Lassen
Burgess Spring Experimental Range; Lassen National Forest
1792
Comment
UC73543
Pyrola picta
Milo S. Baker
1890-1
Lassen
Milford
Comment
OBI75873
Pyrola picta
Anthony Baniaga
2011-8-10
496
Lassen
Lassen Natl Forest. About 1/4 mi SE of Swain Mdw, S of Robbers Ck. Swain Mtn quad T29N R8E sec 35 NE of SW
1721
Comment
UC412673
Pyrola picta
Franklin P. Nutting
Jul 1928
Lassen
Mts. S of Eagle Lake
Comment
HSC81545
Pyrrocoma carthamoides var. cusickii
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6049
Lassen
Along Ash Creek at Ash Creek Campground
1494
Comment
UC35837
Pyrrocoma carthamoides var. cusickii
M. S. Baker and Frank Nutting
1894-7-21
Lassen
near Eagle Lake
1524
Comment
CAS-BOT-BC362262
Pyrrocoma carthamoides var. cusickii
Clarence R. Quick
1964-7-29
64 -91
Lassen
Blacks Mt. Experimental Forest
1798
Comment
POM39972
Pyrrocoma carthamoides var. cusickii
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
UC1584018
Pyrrocoma hirta var. lanulosa
G. Schoolcraft
1990-8-1
2119
Lassen
about 1 mi s Heath Reservoir
1737
Comment
CHSC52666
Pyrrocoma lanceolata var. lanceolata
James Jokerst
1983-7-24
1881
Lassen
Near Madeline Plains.
1614
Comment
CHSC91924
Pyrrocoma lucida
L. P. Janeway
2005-7-31
8512
Lassen
Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak.
1960
Comment
CHSC5250
Quercus kelloggii
P. Balch
1955-7-25
Lassen
Eagle Lake. Roop Mt. Rd., 5 mi from Susanville.
1828
Comment
UCD46729
Quercus kelloggii
Verne Grant
1947-9-7
8400
Lassen
Along Highway 395 west of Honey Lake, several miles south of Janesville, Lassen County, California.
Comment
UC1187154
Quercus vacciniifolia
Jean Langenheim
1957-6-22
4371
Lassen
nw Said Valley, ne part of Lassen County Said Valley
Comment
CAS-BOT-BC104477
Quercus vacciniifolia
C. Hart Merriam
1925-8-22
s.n.
Lassen
Summit, between Butte Creek Meadows and Lake Almanor
Comment
CHSC23897
Ranunculus aquatilis var. capillaceus
George Ellmore
1973-7-7
7318
Lassen
In bottom of Dixie Springs.
1581
Comment
CHSC8742
Ranunculus aquatilis var. capillaceus
S. Chulasmai
1966-5-13
34
Lassen
Vernal pool, (Johnstonville).
Comment
UC1537334
Ranunculus aquatilis var. capillaceus
Gordon H. True Jr.
1936-6-21
515
Lassen
Honey Lake Valley; in deeper sloughs
1219
Comment
NY493017
Ranunculus aquatilis var. diffusus
B. M. Bartholomew
1988-7-22
4504
Lassen
Mosquito Creek ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain.
2080
Comment
CHSC4982
Ranunculus cymbalaria
R. Clicquennoi
1967-6-24
53
Lassen
In meadow, 4 mi e of Eagle Lake Biological Station at Murrer's Upper Meadow.
1524
Comment
CDA24319
Ranunculus cymbalaria var. saximontanus
T. C. Fuller
1980-8-6
20317
Lassen
North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale.
0
Comment
CHSC27662
Ranunculus cymbalaria var. saximontanus
Robert A. Schlising
1978-7-27
3320
Lassen
E side of Eagle Lake. Pasture.
Comment
JEPS97783
Ranunculus cymbalaria var. saximontanus
Annetta M. Carter
1945-9-30
1723
Lassen
Sam Webb place near end of Eagle Lake.
1554
Comment
RSA293370
Ranunculus cymbalaria var. saximontanus
Reino Alava
1957-7-5
1135
Lassen
Along Highway no. 395, 4.4 miles S of Ravendale.
Comment
UC1537331
Ranunculus cymbalaria var. saximontanus
Gordon H. True Jr.
1936-6-26
544
Lassen
Honey Lake Valley-Willow Creek Valley Road
1524
Comment
CHSC61175
Ranunculus glaberrimus var. ellipticus
Vernon H. Oswald; Lowell Ahart
1993-5-12
5383
Lassen
Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, along Pine Creek.
1737
Comment
UC118184
Ranunculus occidentalis
T. S. Brandegee
1892-6-28
Lassen
Janesville
Comment
JEPS107460
Ranunculus occidentalis var. occidentalis
Lowell Ahart, John Dittes
2005-6-1
11857
Lassen
On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction
1448
Comment
RSA0062308
Ranunculus occidentalis var. occidentalis
Lowell A. Ahart, John Dittes
2011-6-20
17479
Lassen
About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
CHSC101037
Ranunculus populago
John Dittes
2008-5-22
1526
Lassen
Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek.
482
Comment
SEINET10871347
Ribes
Mary Susan Taylor
1974-5-4
Taylor 223
Lassen
Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville.
Comment
JEPS28678
Ribes cereum
George W. Gillett
1957-7-26
916
Lassen
e shore Butte Lake; Lassen Volcanic National Park
1844
Comment
JEPS94487
Ribes cereum var. cereum
Vernon H. Oswald and Lowell Ahart
1997-5-27
8515
Lassen
2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir on Forest Route 38N04
1682
Comment
UC75460
Ribes inerme var. inerme
Milo S. Baker
1894-7-12
Lassen
Pine Creek
Comment
CAS-BOT-BC212579
Ribes montigenum
Alice Eastwood
1912-8-22
1863
Lassen
Trail from Morgan Springs to Lassen Butte
Comment
UC1587075
Ribes roezlii
G. Schoolcraft
1991-7-30
2191
Lassen
n side Widow Mountain (Bear Spring)
1780
Comment
CHSC12424
Ribes velutinum
Anne Linda Brisk
1969-6-19
1
Lassen
1/4 mi NE of ELBS.
1554
Comment
CHSC7760
Ribes velutinum
Beverly J. Wise
1969-4-21
100
Lassen
2.6 mi south of Susanville on Old Dump Rd.
1341
Comment
UC1609463
Ribes velutinum
Vernon H. Oswald and Lowell Ahart
1993-6-14
5547
Lassen
ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake
1566
Comment
RSA0023959
Ribes viscosissimum
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
JEPS88202
Rigiopappus leptocladus
Vernon H. Oswald and Lowell Ahart
1996-6-17
7795
Lassen
s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau
1420
Comment
UC1924227
Rorippa curvipes
Debra Valov
2004-6-8
2004247
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1271
Comment
UC1126739
Rorippa curvisiliqua
A. Simontacchi
1940-6-4
806
Lassen
14.8 mi w Harvey Mountain Lookout; Halls Flat Quad., Lassen National Forest
Comment
POM312442
Rorippa sinuata
Verne Grant, Irving Schneider
1947-8-1
8226
Lassen
Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain.
Comment
NY182185
Rorippa sinuata
G. Schoolcraft
1983-6-28
1025
Lassen
1341.1
Comment
CHSC5002
Rosa woodsii subsp. ultramontana
K. C. Newman
1967-6-30
27
Lassen
Collected ca. 2 mi. NW of ELBS on the other side of the lake in the Merrill Burn area.
1554
Comment
JEPS114901
Rosa woodsii var. ultramontana
Lowell Ahart, John Dittes
2008-6-20
14972
Lassen
About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
CAS-BOT-BC148391
Rubus leucodermis
John Thomas Howell; Gordon H. True
1973-8-1
50248
Lassen
Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada
1950
Comment
CHSC23481
Rubus leucodermis
Wayne O. Baum
1971-7-5
71 -84
Lassen
E. slope of Gallatin Peak.
2072
Comment
CHSC6261
Rubus leucodermis
P. Balch
1955-7-20
Lassen
Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville.
1615
Comment
CAS-BOT-BC147172
Rubus parviflorus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49479
Lassen
Elysian Valley, west of Janesville
1325
Comment
HSC19712
Rubus parviflorus
M. S. Baker
1890-1
Lassen
Milford
Comment
POM91623
Rubus parviflorus var. bifarius
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
UC465808
Rumex crispus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3378
Lassen
Honey Lake Valley
Comment
CAS-BOT-BC433245
Rumex crispus
Louella Bass
1973-6-15
EV- 108
Lassen
Elysian Valley
1325
Comment
CAS-BOT-BC433632
Rumex lacustris
Peter H. Raven; Otto T. Solbrig
1958-6-17
13266
Lassen
Along United States Highway 395, 11.8 miles north-east of Litchfield
Comment
UC1594642
Rumex occidentalis
Vernon H. Oswald and Lowell Ahart
1992-7-16
5122
Lassen
1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on logging road paralleling the e side Bridge Creek); Bridge Creek
1719
Comment
UCR67452
Rumex salicifolius
George K. Helmkamp
1990-9-23
G- 14
Lassen
north of Ravendale
1677
Comment
CHSC113068
Rumex salicifolius subsp. triangulivalvis
Lowell Ahart; John Dittes
2013-7-22
18867
Lassen
Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC58852
Rumex salicifolius var. triangulivalvis
Vernon H. Oswald; Lowell Ahart
1992-7-16
5123
Lassen
Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. Common on drier parts of a marshy meadow.
1719
Comment
CAS-BOT-BC434261
Rumex triangulivalvis
John Thomas Howell
1975-7-23
51404
Lassen
Along Hwy. 395 between Johnstonville and Janesville
1280
Comment
CAS-BOT-BC434263
Rumex triangulivalvis
Annie M. Alexander; Louise Kellogg
1946-8-11
5153
Lassen
Northwest end Grasshopper Valley.
Comment
CAS-BOT-BC109419
Rumex venosus
John Thomas Howell
1978-4-19
52865
Lassen
Sierra Nevada. Along Highway 395 between Doyle and Milford.
Comment
JEPS87461
Sagittaria cuneata
Vernon H. Oswald and Lowell Ahart
1993-8-3
5753
Lassen
n edge Cooper Swamp Cooper Swamp (e of Silver Lake just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); e of Caribou Wilderness, , e of Silver La
1932
Comment
CAS-BOT-BC445707
Sagittaria latifolia
B. Anthony
1967-7-8
s.n.
Lassen
Murrer's Meadow, ca 3 mi. from Eagle Lake Biological Station
1493
Comment
CHSC96714
Salix eastwoodiae
Gordon Leppig; J. Cromwell
1997-7-27
608
Lassen
Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex.
1970
Comment
HSC26528
Salix lasiandra
J. P. Smith, J. O. Sawyer
1972-5-6
5239
Lassen
Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney
1067
Comment Read comments Apr 29 2013
CAS-BOT-BC128170
Salix lasiandra var. lasiandra
John Thomas Howell; Gordon H. True
1973-8-1
50149
Lassen
Transition Zone forest in areas of granitic rock, Gold Run Creek road south of Susanville, Diamond Range - Sierra Nevada
1584
Comment
CAS-BOT-BC124634
Salix lemmonii
John Thomas Howell
1976-7-20
52016
Lassen
along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass
1432
Comment
CAS-BOT-BC124637
Salix lemmonii
M. B. Kildale
1926-9-11
2788
Lassen
Susanville
1524
Comment
JEPS78095
Salsola tragus
Gary W. Zamzow
1972-7-18
84
Lassen
beside Highway 395, 3 mi n Hallelujah Junction; n of Hallelujah Junction
1371
Comment
UC104453
Salvia aethiopis
T. Brandegee
1892-6-30
Lassen
streets of Susanville
Comment
UC585164
Salvia dorrii var. dorrii
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1739
Lassen
mountain above Red Rock
1432
Comment
UC1523804
Sambucus mexicana
Gary Schoolcraft
1982-8-4
850
Lassen
on road to Hayden Hill about 1/2 mi s Hwy 139 (37-10-29)
1524
Comment
JEPS5934
Sambucus racemosa var. microbotrys
Frances D. Payne
1929-7-12
80
Lassen
Lost Lake Warner Mountains (se extremity of mts.)
2286
Comment
RSA74137
Sanicula tuberosa
M. S. Baker
1952-5-23
12426
Lassen
Hwy 36 E of Chester
Comment
CAS-BOT-BC110336
Sarcobatus vermiculatus
Louella Bass
1982-6-20
s.n.
Lassen
West of Karlo.
Comment
UC1136501
Sarcobatus vermiculatus
E. Sawyer
1935-6-27
216
Lassen
Sierraville Quad., Long Valley
Comment
SEINET10532872
Sarcobatus vermiculatus
Mary Susan Taylor
1982-6-12
Taylor 4650
Lassen
4010 ft. T28N R14E se sec 3. Standish quad. Alkali flats in Hartson Lake Refuge, 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville.
1222
Comment
HSC17990
Sarcodes sanguinea
M. S. Baker
1890-3
Lassen
Honey Lake Valley
Comment
CAS-BOT-BC466320
Sarcodes sanguinea
R. Carter
1967-6-22
536
Lassen
1/4 mi S of Corners on Peans Ridge Rd., on way to Mahogany Lake
1950
Comment
UC1609185
Saxifraga aprica
Vernon H. Oswald and Lowell Ahart
1993-5-12
5373
Lassen
sw side of Hwy 44 (0.9 mi nw of its intersection with A21 (to Westwood))
1737
Comment
JEPS47551
Saxifraga oregana
Milo S. Baker
1894-7-9
Lassen
Pine Creek
Comment
UC1567432
Schoenoplectus acutus var. occidentalis
G. Schoolcraft
1989-7-31
1998
Lassen
along A27 about 8 mi e Susanville; e of Susanville
1243
Comment
POM123064
Schoenoplectus maritimus
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
CHSC99154
Scirpus acutus var. occidentalis
Lowell Ahart; John Dittes
2008-6-22
15018
Lassen
On the east end of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber.
1260
Comment
UC1100867
Scirpus americanus
Malcolm A. Nobs, S. Galen Smith
1949-8-20
1470
Lassen
1 mi s Milford (Honey Lake Valley); , s of Milford
Comment
UC2119
Scirpus maritimus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3291
Lassen
beside sloughs Honey Lake Valley, beside sloughs Tule Confederacy (Tule Confederacy, Honey Lake Valley)
Comment
UC1100881
Scirpus nevadensis
Verne Grant and Irving Schneider
1947-9-5
8376
Lassen
nw shore Eagle Lake (by Sam Webb's place; Spaulding); nw shore Eagle Lake by Sam Webb's place
Comment
UC1609484
Scirpus nevadensis
Vernon H. Oswald and Lowell Ahart
1993-6-14
5521
Lassen
ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake
1566
Comment
CAS-BOT-BC240002
Scribneria bolanderi
Alice Eastwood; John Thomas Howell
1940-6-11
7974
Lassen
Big Valley Mts.
Comment
CHSC66422
Scribneria bolanderi
Vernon H. Oswald; Lowell Ahart
1996-6-17
7804
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On a flat on the N side of the trail between Devils Corral Trailhead and the 6.0 mile post.
1420
Comment
JEPS88199
Scribneria bolanderi
Vernon H. Oswald and Lowell Ahart
1996-6-17
7804
Lassen
ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side of trail between Devils Corral Trailhead and the 6.0 mi. post); Modoc Plateau, Bizz Johnson Trail
1420
Comment
JEPS11413
Scrophularia desertorum
R. F. Hoover
1940-9-28
4632
Lassen
Susanville
Comment
RSA165466
Scrophularia lanceolata
Clare B. Hardham
1961-6-17
7531 a
Lassen
Rte 395 Alturas Susanville Road
1524
Comment
SEINET3861523
Scutellaria holmgreniorum
Noel H. Holmgren, Patricia K. Holmgren
1980-7-5
9524
Lassen
Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy-395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale.; 0
1585
Comment
CAS-BOT-BC214262
Scutellaria nana
G. Schoolcraft
1986-6-18
1630
Lassen
S. side of Smoke Creek between Shinn & Smoke Creek Ranches
1493
Comment
HSC82199
Scutellaria nana
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6054
Lassen
Along Ash Creek at Ash Creek Campground
1494
Comment
POM252832
Scutellaria nana
A. A. Heller
1938-6-23
15186
Lassen
1 mile south of Westwood.
1524
Comment
SBBG125002
Scutellaria nana
C. B. Hardham
-Jun-2000
Lassen
Gold Run Crk, S of Susanville
Comment
SEINET13947826
Scutellaria nana
Clarence R. Quick
1964-1
64 -92
Lassen
Cal Mt. E of Poison Lake; ca 5800 ft alt.
1768
Comment
CDA2409
Secale cereale
T. C. Fuller
1969-5-22
18481
Lassen
Northeast corner of Rair Drive & Main Street, Susanville.
0
Comment
SEINET10517203
Secale cereale
Douglas G. LeDoux, David B. Dunn
1973-5-25
LeDoux 887
Lassen
Collected 3 mi N of Milford. On Hwy 395 at Honey Lake Campgrounds.
Comment
NY758141
Sedum lanceolatum
J. T. Howell
1974-7-30
50670
Lassen
Summit ridge of Diamond Mountain
2286
Comment
UC506921
Senecio aronicoides
George A. Fischer and Irwin H. Johnson
1933-7-14
F- 253
Lassen
Lassen Forest
1783
Comment
CHSC108003
Senecio hydrophiloides
Lowell Ahart; John Dittes
2011-6-20
17503
Lassen
About 10 yards west of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
UCD135528
Senecio hydrophiloides
Raymond D. Ratliff
1966-6-28
8
Lassen
Lassen National Forest, Gooch Valley - Plot 70.
1828
Comment
HSC95277
Senecio hydrophilus
Gordon Leppig
1998-8-17
1057
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
SEINET10799223
Senecio integerrimus
Billy Joe Cox
1971-6-2
Cox 2993
Lassen
6 mi. N of Hallelujah Jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon Pine, Jeffery Pine along high ridge & in sandy wash.
1402
Comment
CAS-BOT-BC363810
Senecio integerrimus var. exaltatus
John Thomas Howell
1934-6-14
12158
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
CAS-BOT-BC363855
Senecio integerrimus var. exaltatus
A. M. Vollmer; L. Beane
1953-7-1
71
Lassen
Along Halls Flat road, beginning 6 miles west of Susanville to McArthur
1554
Comment
CDA8643
Senecio integerrimus var. exaltatus
G. D. Barbe, P. Hiatt, M. Keffer
1980-6-4
2800
Lassen
2.0 miles (3.2 km) north of Grasshopper Road on Westside Road. Dry Valley Ridge, west side of Madeline Plains.
Comment
RSA0125038
Senecio integerrimus var. exaltatus
A. A. Heller
1938-6-4
15143
Lassen
In the yellow pine forest west of Fredonyer pass on State Highway #36.
1737
Comment
CAS-BOT-BC364153
Senecio serra
B. Bartholomew; B. Anderson
1988-7-22
4496
Lassen
Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain
2080
Comment
CDA8680
Senecio serra
T. C. Fuller
1959-7-7
4726
Lassen
Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo.
0
Comment
CHSC26149
Senecio triangularis
Detzer; Sacks
1977-7-24
1
Lassen
Along streambank, ca. 3 mi se of Milford, .5 mi. se of Laufman Ranger Station on unimproved USFS road.
1481
Comment
RSA518886
Senecio triangularis
Barbara Ertter
1988-7-25
7870
Lassen
ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville.
2256
Comment
CHSC76260
Sesuvium verrucosum
Lowell Ahart; Vernon H. Oswald
1999-9-13
8217
Lassen
Field about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife area, 5 1/2 miles (air) southeast of Standish.
1207
Comment
JEPS117478
Setaria viridis
Lowell Ahart, John Dittes
2010-8-31
17139
Lassen
On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley
1276
Comment
CHSC100133
Shepherdia argentea
L. P. Janeway
2008-8-2
9526
Lassen
Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Tanch Road 1.8 km west of the CA-NV line.
1349
Comment
HSC100806
Sidalcea glaucescens
Lowell Ahart, John Dittes
2010-7-31
17016
Lassen
S side of road, ~50 yd. E of culvert, where road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin.
1516
Comment
JEPS117494
Sidalcea glaucescens
Lowell Ahart, John Dittes
2010-7-31
17016
Lassen
On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1516
Comment
UC1143016
Sidalcea glaucescens
August L. Hormay
1934-7-2
Lassen
1/4 mi nw Black's Mtn; Lassen National Forest, nw of Black's Mtn
1706
Comment
CHSC83236
Sidalcea oregana
Raymond D. Ratliff
1965-8-6
53
Lassen
Lassen National Forest, Harvey Valley Allotment (Ashurst Well). Streambed.
1950
Comment
JEPS15485
Sidalcea oregana subsp. oregana
Joseph and Hilda Grinnell
1938-6-13
1099 a
Lassen
on a sage flat near Ravensdale; near Ravensdale
1554
Comment
UC619263
Sidalcea oregana subsp. oregana
J. and H. W. Grinnell
1938-7-13
1099
Lassen
near Ravensdale; near Ravensdale
1554
Comment
UC871446
Sidalcea oregana subsp. oregana
C. L. Hitchcock
1940-5-26
6644
Lassen
1 mi w Bieber (overflow of Pit River); Pit River
Comment
POM260336
Sidalcea oregana subsp. oregana
C. L. Hitchcock
1940-5-26
6644
Lassen
Overflow of Pitt River, 1 mile W of Bieber
Comment
RSA25322
Sidalcea oregana subsp. oregana
C. L. Hitchcock
1940-5-26
6644
Lassen
Overflow of Pitt River, 1 mile W of Bieber
Comment
UC1537657
Sidalcea oregana subsp. oregana
Gordon H. True Jr.
1937-7-10
789
Lassen
rocky mesa near Skeedaddle; near Skeedaddle
1493
Comment
UC18864
Sidalcea oregana subsp. spicata
M. S. Baker and Frank Nutting
1894-7-9
Lassen
Pine Creek
Comment
SCFS927
Sidalcea oregana subsp. spicata
L. Loeblich
1964-7-1
72
Lassen
Along Hwy 299 going W, 0.5 mi W of jct of A-2 and Hwy 139
1250
Comment
UC1125817
Silene bernardina
A. Simontacchi
1940-7-3
928
Lassen
2.3 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad.
1844
Comment
CDA24107
Silene douglasii
T. C. Fuller
1963-7-15
10898
Lassen
Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin.
0
Comment
JEPS51005
Silene lemmonii
Brown and Wieslander
1922-7-18
34
Lassen
Martin Sprs Eagle Lake, Martin Sprs
Comment
CHSC59709
Silene menziesii
Mary Meyer
1980-7-28
Lassen
2148
Comment
SD61034
Silene menziesii
Darley F. Howe
1964-8-1
3908
Lassen
Parsnip Creek, Warner Mountains, Modoc National Forest.
1830
Comment
CHSC106846
Silene nuda
Barbara Ertter
1988-7-25
7867
Lassen
Ridge of Diamond Mts ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville.
2255
Comment
UC1137897
Silene nuda
E. Sawyer
1935-7-8
274
Lassen
7 3/4 mi ene Loyalton; Sierraville Quad., ene of Loyalton
Comment
CAS-BOT-BC389544
Silene nuda
Paul F. Covel
1937-7-19
755
Lassen
Westwood Airport
Comment
SJSU10112
Silene nuda
J. W. Tilden
1960-6-27
1502
Lassen
foot of Moonlight Rd near Westwood
1524
Comment
UC8482
Silene occidentalis subsp. occidentalis
Milo S. Baker
1896-7-30
Lassen
Silver Lake
Comment Read comments Sep 9 2015
CDA18271
Silene verecunda subsp. andersonii
G. D. Barbe
1974-8-2
1936
Lassen
Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70.
1524
Comment
UC1126792
Sisymbrium altissimum
E. Sawyer
1935-6-27
224
Lassen
Long Valley
1310
Comment
SEINET11987253
Sisymbrium altissimum
J. Vale, Wagnon, K.; Knight, W.; Knight, I.
1981-1
4135
Lassen
65 mi S of Alturas, along edge of hwy #395
Comment
UC1032501
Sisyrinchium bellum
A. Simontacchi
1940-6-15
863
Lassen
2.3 mi ssw of Black Mountain; Lassen National Forest
1798
Comment
SBBG128753
Sisyrinchium bellum
L. Ahart, J. Dittes
2008-6-20
14964
Lassen
ca. 10 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber
1263
Comment
UC1542947
Sisyrinchium idahoense var. idahoense
G. Schoolcraft
1987-6-23
1749
Lassen
along Ash Valley Rd. Ash Valley
1554
Comment
POM82470
Sium suave
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
UC21380
Sium suave
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3363
Lassen
Honey Lake Valley
Comment
CDA38568
Sium suave
T. C. Fuller
1959-7-7
4732
Lassen
Highway 395, 7.5 miles east of Susanville.
0
Comment
CAS-BOT-BC34688
Solanum lycopersicum
J. H. Thomas
1969-9-7
15468
Lassen
Susanville. Near center of town in disturbed fields, near a drivein.
Comment
JEPS117479
Solanum sarrachoides
Lowell Ahart, John Dittes
2010-8-31
17138
Lassen
On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley
1276
Comment
CHSC4987
Solanum triflorum
R. Clicquennoi
1967-7-1
56
Lassen
2 mi w of Murrer's Ranch turnoff, 14.9 mi w of Murrer's Ranch turnoff [sic], 14.9 mi from Susanville, highway 139.
1463
Comment
CDA8717
Solidago californica
Gary Schoolcraft
1994-8-29
2426
Lassen
About 1 mile west of Susanville up Piute Creek.
Comment
CHSC116096
Sonchus asper subsp. asper
Lowell Ahart; John Dittes
2015-7-13
20304
Lassen
About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CDA37488
Sparganium emersum subsp. emersum
Gordon Leppig
1998-8-17
1052
Lassen
Northern California Peatlands; Modoc National Forest. Blue Lake Ranch.
Comment
CHSC66285
Sparganium emersum subsp. emersum
Vernon H. Oswald; Lowell Ahart
1996-6-24
7871
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow.
1633
Comment
POM119382
Sparganium eurycarpum
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
NY482319
Spergularia diandra
G. Schoolcraft
1998-6-8
2734
Lassen
N. base of Ft. Sage Mtns.
1249.7
Comment
CAS-BOT-BC149623
Spiraea douglasii
Louella Bass
1973-6-17
EV - 118
Lassen
Elysian Valley
1325
Comment
UC729643
Spiraea douglasii
Carl B. Wolf
1929-9-1
3779
Lassen
between Grassy Lake and Snag Lake; Mt. Lassen National Park
Comment
UC845562
Spiranthes romanzoffiana
A. A. Heller
1938-7-28
15297
Lassen
meadow about 1 mi e Westwood
1524
Comment
CHSC5277
Stachys ajugoides var. rigida
P. Balch
1955-7-17
Lassen
Papoose Creek, near Gallatin's. Eagle Lake.
1615
Comment
JEPS63054
Stachys ajugoides var. rigida
Brown and Wieslander
ca. 1914
57
Lassen
near Eagle Lake; Martin Sprs.
Comment
CDA25155
Stanleya viridiflora
L. Bass
1982-7-25
Oct- 82
Lassen
Near Karlo, about 12 miles north of Litchfield.
Comment
SEINET5337330
Stellaria longipes
C. G. Gulling
1905-1
1551
Lassen
Big Meadows
Comment
HSC95299
Stellaria longipes subsp. longipes
Gordon Leppig, Tony LaBanca, Leonel Arguello
1997-6-29
544
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CHSC229
Stellaria longipes var. longipes
1944-6-30
Lassen
Grasshopper Valley near Eagle Lake.
1615
Comment
CDA8837
Stephanomeria exigua
S. E. Piper
1943-7-3
Lassen
Sierra Ordnance Depot, Herlong.
0
Comment
UC768667
Stephanomeria exigua subsp. coronaria
Robert F. Hoover
1940-10-1
4651
Lassen
Johnstonville
Comment
HSC83372
Stephanomeria lactucina
R. W. Becking
1987-7-29
Lassen
Lassen National Forest, Caribou Wilderness, Gem Lake
Comment
CDA18266
Stephanomeria spinosa
G. D. Barbe
1974-8-2
1929
Lassen
Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70.
1524
Comment
CAS-BOT-BC322924
Stephanomeria tenuifolia
Louella Bass
No date on label.
s.n.
Lassen
Elysian Valley, Sierra Nevada
Comment
HSC79992
Stipa comata
William Rothstrom
1975-6-9
Lassen
Johnstonville, 0.25 mi. S of Hwy. 395, W of airport
Comment
UCR119159
Stipa nevadensis
Beecher Crampton
1960-6-18
5729
Lassen
Warner Mountains, Southern edge of mountains, 1.25 miles north of Blue Lake in vicinity of Blue Lake Ranch.
1982
Comment
JEPS102871
Streptanthella longirostris
Vernon H. Oswald
2001-6-2
10039
Lassen
North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain.
1828
Comment
CAS-BOT-BC519057
Streptopus amplexifolius
Alice Eastwood
1912-8-22
1765
Lassen
Trail to Sulphur Mine from Morgans, Lassen Butte Region
Comment
HSC22877
Stuckenia pectinata
John Pratt
1970-6-14
13
Lassen
Comment
CHSC64784
Suaeda moquinii
Vernon H. Oswald
1995-6-7
6835
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. Flat near the railroad.
1231
Comment
JEPS114622
Swertia albicaulis var. albicaulis
Lowell Ahart, John Dittes
2008-6-19
14881
Lassen
Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber
1578
Comment
UC1123452
Swertia albicaulis var. albicaulis
A. Simontacchi
1940-6-6
823
Lassen
3.6 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad.
1737
Comment
CHSC27669
Swertia albicaulis var. nitida
Robert A. Schlising
1978-7-9
3312
Lassen
S of Eagle Lake; forested area between Papoose Meadows and Eagle Lake Road.
Comment
JEPS126467
Symphoricarpos albus
Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky
2015-8-11
CA 350 -057
Lassen
North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road.
Comment
CAS-BOT-BC269700
Symphoricarpos mollis
Louella Bass
1973-6-23
132
Lassen
Elysian Valley
1325
Comment
UC1120025
Symphoricarpos mollis
A. Simontacchi
1940-6-24
890
Lassen
6.4 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad.
1950
Comment
CHSC36147
Symphoricarpos rotundifolius var. rotundifolius
George Deniso
1978-7-21
95
Lassen
Several meters S of Colman Lake, SE of Eagle L.,
1962
Comment
CHSC66381
Symphoricarpos rotundifolius var. rotundifolius
Vernon H. Oswald; Lowell Ahart
1996-6-17
7801
Lassen
Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau.
1420
Comment
CHSC5024
Symphoricarpos vaccinioides
L. G. Bennett
1967-7-17
182
Lassen
20 yards from shore of Mahogany Lake, near entrance rd.
2060
Comment
UC773956
Symphyotrichum ascendens
L. R. Short
1936-8-24
S- 498
Lassen
Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range
1792
Comment
CHSC72216
Symphyotrichum campestre
Vernon H. Oswald
1998-9-14
9623
Lassen
Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood).
1737
Comment
CAS-BOT-BC97917
Symphyotrichum frondosum
John Thomas Howell
1934-7-8
12508
Lassen
[Spalding's] Spalding, Eagle Lake
Comment
CHSC59076
Symphyotrichum frondosum
Vernon H. Oswald; Lowell Ahart
1992-8-25
5185
Lassen
Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake.
1851
Comment
CHSC66848
Symphyotrichum frondosum
Vernon H. Oswald
1996-9-21
8286
Lassen
Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. On the S edge of Willow Creek ca. 1 mi E of the parking area on the highway.
1490
Comment
JEPS95902
Symphyotrichum frondosum
Lowell Ahart and Vernon H. Oswald
1999-9-13
8210
Lassen
just S of the parking area, about 1 mi S of the sign in station, Honey Lake Wildlife Area, 5 1/2 mi (air) SE of Standish
1207
Comment
CHSC92950
Symphyotrichum spathulatum var. spathulatum
L. P. Janeway
2005-7-31
8513
Lassen
Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak.
1960
Comment
JEPS122175
Symphyotrichum spathulatum var. spathulatum
Lowell Ahart
2014-8-20
19720
Lassen
0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44.
Comment
UCD136663
Symphyotrichum spathulatum var. yosemitanum
Barbara L. Wilson; R. Brainerd, D. Lytjen, et al.
2004-8-24
11184
Lassen
Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way.
1463
Comment
CAS-BOT-BC238510
Synthyris missurica
John Thomas Howell
1934-6-14
12119
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
RSA324710
Taeniatherum caput-medusae
A. Tiehm, James Young, Raymond Evans
1984-6-7
8597
Lassen
Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield.
1387
Comment
UCD86203
Taeniatherum caput-medusae
Lee E. Wheeler
1960-6-15
Lassen
open hillside, edge of valley plain, ca. 4 mi SE/Susanville, Lassen Co.
Comment
SEINET10617707
Taraxacum californicum
David B. Dunn, Billy Joe Cox
1971-1
Lassen
Comment
SEINET10826287
Taraxacum californicum
David B. Dunn, Billy Joe Cox
1971-1
Lassen
Comment
CHSC5219
Taraxacum officinale
J. Wolf
1946-6-23
Lassen
Pine Creek Slough, Eagle Lake.
1584
Comment
UC1136807
Taraxacum officinale
L. R. Short and W. McNulty
1936-6-17
Lassen
Burgess Spr. Exp. Range Lassen Forest
1795
Comment
CHSC68753
Taraxia subacaulis
Vernon H. Oswald; Lowell Ahart
1997-5-27
8521
Lassen
Small impoundment on Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi northeast of Hwy. 139.
1731
Comment
JEPS94483
Taraxia subacaulis
Vernon H. Oswald and Lowell Ahart
1997-5-27
8521
Lassen
3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04
1731
Comment
CHSC4967
Taraxia tanacetifolia
R. Carter
1967-6-23
547
Lassen
In upper part of Murrer's Meadow.
1584
Comment
CHSC7773
Taraxia tanacetifolia
Beverley J. Wise
1969-5-18
70
Lassen
18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On the east side of Willow Creek.
1524
Comment
UC1523755
Taraxia tanacetifolia
Gary Schoolcraft
1981-8-11
557
Lassen
Said Valley Reservoir
1615
Comment
CDA37990
Taraxia tanacetifolia
T. C. Fuller
1959-7-7
s.n.
Lassen
Highway 395, 0.8 mile south of Termo.
0
Comment
CAS-BOT-BC329049
Tetradymia canescens
John Thomas Howell
1961-9-25
36972
Lassen
East side of Beckwourth Pass
1554
Comment
RSA252490
Tetradymia canescens
R. F. Thorne, C. W. Tilforth
1969-9-6
39265
Lassen
C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake).
1280
Comment
UC1136973
Tetradymia canescens
L. R. Short
1936-9-13
S 503
Lassen
Burgess Spring Experimental Range Lassen Forest
1761
Comment
CDA20359
Tetradymia glabrata
D. Tillotson
1942-6-9
s.n.
Lassen
Modoc Plateau; Mud Flat.
0
Comment
CHSC33334
Tetradymia glabrata
Hank Thompson
1980-4-14
20
Lassen
Ca. 24 mi E of Susanville.
1402
Comment
CHSC5220
Tetradymia glabrata
J. B. Kimsey
1946-6-17
Lassen
Horse Lake.
1554
Comment
JEPS17744
Tetradymia glabrata
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5415
Lassen
4.3 mi e junction with U. S. 395 (along the Smoke Creek Ranch road, s edge of Secret Valley); Secret Valley
1441
Comment
POM252875
Tetradymia glabrata
A. A. Heller
1938-6-23
15205
Lassen
near Mapes on US Highway 395
1311
Comment Read comments Jun 1 2009
SD87577
Tetradymia glabrata
Frank W. Peirson
1926-6-24
6854
Lassen
Madeline Plains.
Comment
SFV11003
Tetradymia glabrata
J. Turner, F. M. Ball (1191)
1962-7-12
s. n.
Lassen
Highway 395 near Ravendale. 57 miles south of Alturas.
1616
Comment
UC1567439
Tetradymia glabrata
G. Schoolcraft
1989-5-31
1881
Lassen
near Skedaddle Creek crossing (Sand Pass Rd)
1249
Comment
UC91602
Tetradymia glabrata
T. S. Brandegee
1892-7-22
Lassen
Honey Lake
Comment
RSA94936
Tetradymia glabrata
F. W. Peirson
1926-6-24
6854
Lassen
On Madeline Plain
Comment
JEPS28448
Thalictrum sparsiflorum
George W. Gillett
1957-7-24
897
Lassen
Cameron Meadow Lassen Volcanic National Park
1950
Comment
CAS-BOT-BC88084
Thelypodium flexuosum
G. Schoolcraft
1980-5-16
s.n.
Lassen
Southeast of Wendel.
1219
Comment
UC1479578
Thelypodium flexuosum
Gary Schoolcraft
1980-5-16
233
Lassen
e. side Honey Lake (n.e. of Amedee Hot Springs)
1219
Comment
CDA25198
Thelypodium integrifolium subsp. complanatum
T. C. Fuller
1980-8-6
20321
Lassen
0.3 km south of Smoke Creek Ranch Road, 2 km west of the state line, Rush Creek drainage.
0
Comment
CAS-BOT-BC207182
Thinopyrum intermedium subsp. intermedium
John Thomas Howell
1975-7-23
551396
Lassen
Susanville - Sierra Nevada
1295
Comment
JEPS114452
Thlaspi arvense
Lowell Ahart, John Dittes
2008-6-20
14961
Lassen
Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
JEPS94831
Thysanocarpus curvipes
Vernon H. Oswald and Lowell Ahart
1998-5-22
9129
Lassen
5 mi ne of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road)
1463
Comment
NY732815
Thysanocarpus curvipes
N. H. Holmgren
1980-7-4
9505
Lassen
Observation Peak, south side of the mountain, 18 km (11 mi) air distance east of Ravendale
1890
Comment
POM95124
Thysanocarpus curvipes var. curvipes
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin s Ranch.
1463
Comment
HSC28503
Tiquilia nuttallii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19287
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
UC303063
Tofieldia occidentalis subsp. occidentalis
Pearl Safford
Lassen
Susanville [uncertain locality]
Comment
CHSC6276
Toxicoscordion venenosum var. venenosum
J. B. Kimsey
1946-6-1
Lassen
Aspen Grove, Pine Creek.
1584
Comment
JEPS117497
Tragopogon dubius
Lowell Ahart, John Dittes
2010-7-31
16998
Lassen
About 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1516
Comment
CAS-BOT-BC377076
Tragopogon dubius
Louella Bass
1973-5-29
83
Lassen
Elysian Valley
1325
Comment
CHSC5028
Tragopogon pratensis
L. B. Barlow
1967-7-6
103
Lassen
2 mi. west of Murrer's Ranch turn off, 14.9 mi. north of Susanville, Highway 139.
1463
Comment
CHSC117523
Trichostema oblongum
Lowell Ahart; John Dittes
2016-7-13
21122
Lassen
West edge of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwesst of Adin, hills at the southern slope of Big Valley.
1289
Comment
JEPS88216
Trichostema oblongum
Vernon H. Oswald and Lowell Ahart
1996-6-24
7858
Lassen
2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, on w side of Papoose Meadows 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows
1633
Comment
SBBG119831
Trichostema simulatum
L. Ahart
2003-8-17
10514
Lassen
E side of Hwy 36, ca. 0.25 air mi SW of the Susan River, ca. 8 air mi SW of Susanville
1433
Comment
UCD125893
Trichostema simulatum
Lowell Ahart
1974-7-9
526
Lassen
along Eagle Lake Road, about 3 miles west of Susanville.
1584
Comment
UCD117583
Trientalis latifolia
W. W. Robbins
1926-4-17
517
Lassen
Grass Valley.
Comment
UC1184054
Trifolium andersonii var. andersonii
Jean Langenheim
1957-6-26
Lassen
NW Said Valley Lassen County, northeastern part
Comment
CHSC77214
Trifolium beckwithii
G. Schoolcraft
1993-6-10
2289
Lassen
N of Clark's Valley Rd. e of Red Rock Lake.
1828
Comment
CHSC110888
Trifolium cyathiferum
Lowell Ahart; John Dittes
2012-7-9
18304
Lassen
About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
POM260739
Trifolium cyathiferum
Alice Eastwood, John T. Howell
1940-6-11
7990
Lassen
Big Valley Mountains.
Comment
JEPS127180
Trifolium eriocephalum subsp. cusickii
Lowell Ahart, John Dittes
2016-7-15
21231
Lassen
In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment
CHSC117267
Trifolium eriocephalum var. cusickii
Lowell Ahart; John Dittes
2016-7-15
21231
Lassen
About 80 yards west of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1267
Comment
CHSC66724
Trifolium hybridum
Vernon H. Oswald; Lowell Ahart
1996-8-1
8115
Lassen
N. shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Da on Mountain Meadows Reservoir, SW of Westwood.
1524
Comment
UCSC011016
Trifolium longipes subsp. hansenii
Lowell Ahart, John Dittes
2016-7-15
21230
Lassen
About 80 yards west of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber; 41.183167 -121.036972
1268
Comment
CHSC67223
Trifolium macrocephalum
James D. Jokerst
1991-5-29
3304
Lassen
Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road.
1737
Comment
CHSC71127
Trifolium macrocephalum
Vernon H. Oswald; Lowell Ahart
1998-5-22
9090
Lassen
Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail.
1417
Comment
JEPS94126
Trifolium macrocephalum
Vernon H. Oswald and Lowell Ahart
1998-5-22
9090
Lassen
Hwy. 36 between Fredonyer Summit and Susanville (0.4 mi. w. of the Susan R. and Bizz Johnston Trail)
1417
Comment
UCD111322
Trifolium macrocephalum
Brad D. Schafer
2003-5-24
124
Lassen
Two miles southeast of Red Rock Valley.
1889
Comment
POM313551
Trifolium macrocephalum
A. Hormay
1929-5-20
10337
Lassen
Lassen National Forest
Comment
CHSC68864
Trifolium productum
Vernon Oswald; Lowell Ahart
1997-6-24
8636
Lassen
South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout.
2249
Comment
CHSC5293
Trifolium repens
P. Collett
1946-6-19
Lassen
Willow Creek valley.
1463
Comment
NY717607
Trifolium variegatum
H. D. D. Ripley
1943-6-13
5690
Lassen
Near Milford
1265
Comment
UC1025069
Trifolium wormskioldii
Leo Whitney
1933-8-9
1501
Lassen
ca 8 mi nw Eagle Lake (spring at head of Slate Creek); Lassen National Froest
1920
Comment
CAS-BOT-BC451769
Triglochin maritima
Alice Eastwood
1912-8-22
1800
Lassen
Morgans Springs, Lassen Butte Region
Comment
CHSC117530
Triglochin scilloides
Lowell Ahart; John Dittes
2016-7-13
21141
Lassen
Scattered along the southwest edge of the pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
1289
Comment
CHSC60928
Triglochin scilloides
Vernon H. Oswald; Lowell Ahart
1993-7-8
5645
Lassen
Pittville Rd. (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. Beds of drainages and pools in meadow.
1709
Comment
HSC81712
Tripterocalyx crux-maltae
Diane Williams
1986-5-25
Lassen
E of Honey Lake at Winterfat Flat
Comment Read comments Jan 27 2013
CAS-BOT-BC199574
Trisetum canescens
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49437
Lassen
Elysian Valley, west of Janesville
1325
Comment
POM114350
Trisetum canescens
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
RSA79411
Triteleia bridgesii
E. K. Balls
1952-5-24
17251
Lassen
Ash Creek Public Camp, along Ash Creek, off road from Adin to Madeline.
1524
Comment
JEPS64211
Triteleia hyacinthina
Brown and Wieslander
1922-7-18
56
Lassen
near Susanville (Martin Sprs); Martin Springs
Comment
JEPS64214
Triteleia hyacinthina
C. S. Robinson, G. S. Crew
1927-7-15
55810
Lassen
Feather Lake Lassen National Forest, Feather Lake (sw Lassen County)
1737
Comment
UC421857
Triteleia hyacinthina
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3386
Lassen
Adobe Meadows Honey Lake Valley
Comment
CAS-BOT-BC522004
Triteleia hyacinthina
Alice Eastwood; John Thomas Howell
1940-6-11
7970
Lassen
Big Valley
Comment
CAS-BOT-BC522007
Triteleia hyacinthina
Arnold Tiehm; Jan Nachlinger; Margaret Williams
1988-6-2
11705
Lassen
East side of Snowstorm Mountain, 18.1 road miles north of the Wendel Road on highway 395 from Susanville to Alturas
1402
Comment
RSA0008977
Triteleia hyacinthina
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin s Ranch.
1463
Comment
SEINET10872223
Triteleia montana
Mary Merello
1993-6-28
Merello 757
Lassen
Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland.
1740
Comment
RSA722571
Triticum aestivum
R. R. Halse
2006-8-3
6991
Lassen
Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely.
1860
Comment
SEINET3125312
Triticum aestivum
Richard R. Halse
2006-1
6991
Lassen
Modoc National Forest, along Blue Lake Road north of Blue Lake, about 15 miles ESE of Likely.
1860
Comment
UC1241787
Typha latifolia
Malcolm A. Nobs and S. Galen Smith
1949-8-20
1474
Lassen
nw shore Honey Lake (Honey Lake Valley, one mi s of Milford); Honey Lake Valley
Comment
UC1924206
Urtica dioica
Debra Valov
2005-8-19
2005217
Lassen
Eagle Lake; Hwy 139. Mi. marker 25
1554
Comment
CAS-BOT-BC404118
Urtica dioica subsp. holosericea
John Thomas Howell
1976-7-19
51991
Lassen
On Gold Run Creek southwest of Susanville
1386
Comment
JEPS9178
Utricularia macrorhiza
J. B. Davy
June, 1897
3339
Lassen
Honey Lake
Comment
UC35006
Utricularia macrorhiza
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3339
Lassen
w. end of lake Honey Lake Valley
1219
Comment
HSC95175
Utricularia minor
Gordon Leppig, J. Cromwell
1997-7-27
614
Lassen
Modoc National Forest, Blue Lake Ranch.
1970
Comment
JEPS87182
Utricularia minor
Vernon H. Oswald and Lowell Ahart
1992-7-16
5117
Lassen
betw. Old Station and Susanville (w. of Cinder Pit on logging rd. paralleling e. side of Bridge Creek, 1.3 mi. n. of Hwy. 44 & McCoy Flat Reservoir, swamp on Bridge Creek)
1719
Comment
JEPS51165
Vaccaria hispanica
W. L. Jepson
1918-8-2
7797
Lassen
Honey Lake Valley; Raker Ranch
1219
Comment
CHSC77275
Vaccinium cespitosum
Loren Gehrung
1999-10-9
133
Lassen
Caribou Wilderness. East shore of Jewel Lake.
2100
Comment
SD7779
Vaccinium uliginosum
Mrs. R. M. Austin
1882-1
Lassen
Willow Lake
Comment
CAS-BOT-BC530502
Veratrum californicum
Clare B. Hardham
1971-8-22
18371
Lassen
near snow banks
2346
Comment
CDA6408
Verbascum thapsus
Yeager
1929-8-29
Lassen
Honey Lake.
0
Comment
CHSC36442
Veronica americana
Theresa Coasta
1982-6-4
37
Lassen
Along Willow Creek in Murrers Upper Meadow.
Comment
CHSC60423
Veronica americana
Mary Ann Showers
1992-6-28
2649
Lassen
Lassen Volcanic National Park. Pond below Windy Point, west of Mill Creek.
1950
Comment
CHSC91308
Veronica arvensis
Lowell Ahart; John Dittes
2005-6-1
11903
Lassen
On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
Comment
RSA715625
Veronica arvensis
L. Ahart, John Dittes
2005-6-1
11903
Lassen
On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction.
1460
Comment
CDA6486
Veronica catenata
Vernon Oswald
1994-9-6
6470
Lassen
Willow Creek Wildlife Area on Highway 139, ca. 10 miles (air) north of Susanville.
Comment
CDA6488
Veronica catenata
Vernon Oswald
1994-9-6
6470
Lassen
Willow Creek Wildlife Area on Highway 139, ca. 10 miles (air) north of Susanville.
Comment
RSA0039526
Veronica catenata
Lowell A. Ahart, John Dittes
2012-7-9
18286
Lassen
About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
SEINET10499925
Veronica peregrina
David B. Dunn
1956-7-3
Dunn 11924 A
Lassen
Alkaline sink by roadside, extra runoff from hwy 395. 11 Mi s of madeline.
Comment
CHSC60860
Veronica peregrina subsp. xalapensis
Vernon H. Oswald; Lowell Ahart
1993-6-28
5590
Lassen
Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.
1719
Comment
CHSC66269
Veronica peregrina subsp. xalapensis
Vernon H. Oswald; Lowell Ahart
1996-6-24
7874
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake.
1633
Comment
CHSC77238
Veronica peregrina subsp. xalapensis
G. Schoolcraft
1998-6-10
2292
Lassen
East of Red Rock Lake N. of County Rd 512.
1828
Comment
JEPS28646
Veronica peregrina subsp. xalapensis
George W. Gillett
1957-7-22
875
Lassen
Snag Lake, near the south shore, Lassen Volcanic National Park Snag Lake; Lassen Volcanic National Park, Snag Lake
1850
Comment
JEPS28987
Veronica serpyllifolia subsp. humifusa
Frances D. Payne
1929-7-12
96
Lassen
e side and at southern end of Warner Range (in Upper Silver Creek); , Upper Silver Creek
2438
Comment
CHSC83990
Vicia americana var. americana
K. R. Stern
1967-6-24
2407
Lassen
Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station.
1554
Comment
HSC97155
Vicia americana var. americana
L. Ahart
2005-6-1
11866
Lassen
1/2 mile west of Scott Rd., Long Valley, about 2 air miles NW of the intersection of Scott Rd. and Hwy. 70. 3.9 air miles NW of Hallelujah Junction
1449
Comment
NY716241
Vicia americana var. americana
G. Schoolcraft
1982-7-6
761
Lassen
Fort Sage Mountains
1920
Comment
UC1731085
Vicia americana var. americana
Dean W. Taylor
1974-6-14
3709
Lassen
Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road
1615
Comment
POM28600
Vicia americana var. americana
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkins Ranch.
1829
Comment
CHSC4833
Viola bakeri
R. Carter
1967-7-14
598
Lassen
S side of rd. 3.5 mi e of Silver Lake between rd (31NO7) and Susan River.
1828
Comment
CHSC12746
Viola beckwithii
P. Fehr
1974-4-14
2
Lassen
860 Cherry Terrace, Susanville.
1389
Comment
CHSC7181
Viola beckwithii
Lynn R, Thomas
1969-4-17
95
Lassen
Ca. 200 yds. up hillside e of Rice Canyon Rd., 5 mi n of junction with 'back road to Litchfiend'. Ca. 12 mi e of Susanville.
1310
Comment
UC1137742
Viola beckwithii
L. R. Short
1936-4-28
S 328
Lassen
Harvey Valley; Lassen National Forest
1706
Comment
UC1567387
Viola lobata subsp. integrifolia
G. Schoolcraft
1989-5-8
1869
Lassen
SW slope of Hayden Hill.
1798
Comment
CDA34519
Viola purpurea
B. Villegas
2011-5-26
s.n.
Lassen
Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139.
0
Comment
CHSC23555
Viola purpurea subsp. dimorpha
W. O. Baum
1971-6-21
22
Lassen
E slope of Gallatin Peak.
1920
Comment
CHSC7741
Viola purpurea subsp. dimorpha
Beverley J. Wise
1969-4-21
121
Lassen
4 mi. south of Susanville on Las. Co. Rd. 204 (Gold Run Road).
1310
Comment
CHSC58047
Viola purpurea subsp. integrifolia
Vernon H. Oswald
1992-6-1
4962
Lassen
Lassen Volcanic National Park. Juniper Lake Rd., 2.1 mi N of the park boundary, at the western-most of three ponds and swales along this section of road.
2084
Comment
POM85345
Viola purpurea subsp. venosa
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
UCD164663
Viola purpurea subsp. venosa
R. John Little; Cynthia Little
1991-7-4
6616 -b
Lassen
Lassen National Forest. R8E T33N 0.9 mile from jct of 35N04 and 33N02 on 33N02. Prob. S28. (Exact location unknown. Coordinates estimated by label maker).
1676
Comment
JEPS107303
Vulpia microstachys var. pauciflora
Lowell Ahart, John Dittes
2005-6-1
11876
Lassen
On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, about 3.7 miles (air) northwest of Hallelujah Junction
1461
Comment
UCD55298
Vulpia myuros var. hirsuta
Ellen Dean; Gary Schoolcraft
2006-5-16
3119
Lassen
East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields.
1283
Comment
SDSU13739
Wyethia mollis
D. F. Howe
1964-8-2
3922
Lassen
East Creek, Warner Mts., Modoc National Forest.
1981
Comment
UC506932
Wyethia mollis
George A. Fischer and Irwin N. Jolinson
1933-7-12
F- 239
Lassen
Lassen Forest
1737
Comment
UC89850
Wyethia mollis
T. S. Brandegee
1882-6-26
Lassen
Milford
Comment
CAS-BOT-BC383489
Wyethia mollis
David D. Keck; J. Clausen
1935-6-25
3765
Lassen
2 mi. W. of Fredonia Pass, between Susanville and Westwood
1524
Comment
CAS-BOT-BC383490
Wyethia mollis
George W. Gillett
1957-7-29
957
Lassen
Lassen Volcanic National Park. Snag Lake. Dry slopes near the Butte Lake trail above Snag Lake
1859
Comment
SEINET10914998
Wyethia mollis
Jeffrey Huber
1971-6-2
Huber 109
Lassen
4 mi. S of Adin along Calif. Hwy. 139 in basalt-clay; valley floor in Artemisia.
1341
Comment
UCD32664
X Pseudelymus saxicola
Beecher Crampton
1954-7-5
2062
Lassen
Lassen County, 4.5 miles west of Susanville, along state highway 36.
1432
Comment
CAS-BOT-BC454212
Zannichellia palustris
Peter H. Raven; Otto T. Solbrig
1958-6-17
13257
Lassen
Along United States Highway 395, 7.1 miles west of Standish
Comment
UCD58789
Zannichellia palustris
Daniel B. Marcum
2007-7-25
s.n.
Lassen
6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field.
1280
Comment
CAS-BOT-BC533048
Zigadenus paniculatus
Doris Kildale Gillespie
1930-5-15
9384
Lassen
5 miles west of Susanville
Comment
CAS-BOT-BC533050
Zigadenus paniculatus
Louella Bass
1980-1-1
s.n.
Lassen
Sierra Nevada, Lassen College Campus, Susanville
Comment