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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
UCR64818
Abies concolor
Frank C. Vasek
1976-9-3
760903- 02
Lassen
5 mi west of Susanville, north of State Hwy 44 at a point 0.25 mi north of junction with State Hwy 36
Comment
CDA23835
Abronia turbinata
S. E. Piper
1943-7-2
Lassen
0.5 mile east of Herlong.
0
Comment
RSA0025839
Abronia turbinata
Marcus E. Jones
1897-6-22
s.n.
Lassen
10 miles south of Amedee.
Comment
CHSC13640
Achillea millefolium
M. S. Taylor
1974-7-10
286
Lassen
Abundant in meadow ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville.
1524
Comment
UC74065
Achillea millefolium
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Chat; Long Valley
Comment Read comments Jan 7 2012
CAS-BOT-BC260402
Achnatherum hymenoides
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-11
16335
Lassen
13.5 miles E of Susanville
Comment
CAS-BOT-BC260403
Achnatherum hymenoides
P. Monnet
1913-7-1
799
Lassen
Hot Springs Peak
1828
Comment
CHSC52909
Achnatherum hymenoides
L. P. Janeway
1990-7-4
3769
Lassen
Near the east-side of saddle ca 0.8 mi NE of Meadowview Peak.
1981
Comment
SEINET249775
Achnatherum lemmonii
Beecher Crampton
1954-7-5
2054
Lassen
4.5 miles west of Susanville, along state highway 36.
1433
Comment
CAS-BOT-BC216850
Achnatherum occidentale
David D. Keck
1944-7-8
5451
Lassen
1.5 miles W of Susanville on rim of plateau overlooking Susan River Canyon
1341
Comment
UC1024835
Achnatherum occidentale subsp. californicum
Leo Whitney
1935-6-10
3221
Lassen
Camp 10, Fruit Grower's Supply Company Lassen National Forest
Comment
UC773979
Achnatherum occidentale subsp. californicum
L. R. Short and Wm. Gansberg
1936-6-2
S- 366
Lassen
Burgess Spring Experiment Range Lassen Forest
1858
Comment
UC1133257
Achnatherum occidentale subsp. occidentale
H. P. Hagge
1929-9-17
38
Lassen
Logan Mtn. Eagle Lake Quadrangle, Logan Mtn.
Comment
UC1137662
Achnatherum occidentale subsp. occidentale
George A. Fisher and Irwin H. Johnson
1933-7-12
F 215
Lassen
Lassen National Forest
1706
Comment
UC1137656
Achnatherum occidentale subsp. pubescens
George A. Fischer and Irwin H. Johnson
1933-7-12
F 199
Lassen
Grass Valley Lassen National Forest
1696
Comment
UCD18960
Achnatherum occidentale subsp. pubescens
Raymond D. Ratliff
1965-7-12
16
Lassen
Lassen National Forest, Harvey Valley Allotment (HV-81-76 and 21-15).
1737
Comment
UCD51194
Achnatherum occidentale subsp. pubescens
L. Whitney
1935-6-24
s.n.
Lassen
Squaw Valley.
Comment
UCD51228
Achnatherum occidentale subsp. pubescens
George A. Fischer; Irwin H. Johnson
1933-7-12
F 218
Lassen
Lassen County.
1722
Comment
CHSC93701
Achnatherum thurberianum
Lowell Ahart; John Dittes
2005-6-2
11946
Lassen
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, about 7.5 miles (air) northwest of Hallelujah Junction.
1601
Comment
JEPS107797
Achnatherum thurberianum
Lowell Ahart, John Dittes
2005-6-2
11946
Lassen
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, about 7.5 miles (air) northwest of Hallelujah Junction
1601
Comment
RSA647558
Achnatherum thurberianum
Marion P. Harthill
1972-6-17
832
Lassen
Madeline.
1677
Comment
UC584332
Achnatherum thurberianum
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-8
2226
Lassen
6 mi s Ravendale
1660
Comment
UC593456
Achnatherum thurberianum
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1744
Lassen
gully on mountain above Red Rock
1420
Comment
UCD32677
Achnatherum thurberianum
Beecher Crampton
1954-7-6
2082
Lassen
Lassen County, 7 miles north of Madeline, along US highway 395, roadside.
1524
Comment
UCD51444
Achnatherum thurberianum
R. Tofsrud
1947-7-1
223
Lassen
Between Ravendale and Thermos.
Comment
UCD32671
Achnatherum webberi
Beecher Crampton
1954-7-6
2074
Lassen
Lassen County, 15 miles south of Ravendale, along US highway 395.
1676
Comment
UCD51302
Achnatherum webberi
L. Whitney
1935-7-31
3587
Lassen
Ashurst Mt.
Comment
CAS-BOT-BC391364
Aconitum columbianum subsp. columbianum
Alice Eastwood
1912-8-22
1770
Lassen
Trail from Morgans Springs to Sulphur Works, Lassen Butte Region
Comment
CHSC117525
Acroptilon repens
Lowell Ahart; John Dittes
2016-7-13
21103
Lassen
Sides of the overflow, about 50 yards north of the dam, 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.
1289
Comment
CHSC68867
Actaea rubra
Vernon Oswald; Lowell Ahart
1997-6-24
8612
Lassen
South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary.
1889
Comment
JEPS31589
Adonis aestivalis
J. R. Sweeney
1962-7-5
2653
Lassen
1/2 mi n of Willow Creek Guard Station (16 mi n of Susanville, Modoc National Forest, on State Highway 139, 54 mi s of Adin); Modoc National Forest, State Highway 139
1219
Comment
JEPS35591
Adonis aestivalis
Wayne Savage
1964-7-1
339
Lassen
1/2 mi n of Willow Creek Guard Station (16 mi n of Susanville, on State Highway 139, 54 mi s of Adin); State Highway 139
1219
Comment
UC1220355
Adonis aestivalis
J. R. Sweeney
1962-6-5
2653
Lassen
1/2 mi n ow Willow Creek Guard Station (16 mi n of Susanville on State Highway 139, 54 mi s of Adin); State Highway 139
1219
Comment
POM1922B
Ageratina occidentalis
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CHSC93704
Agoseris glauca var. glauca
Lowell Ahart; John Dittes
2005-6-1
11849
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
UC1567420
Agoseris glauca var. glauca
G. Schoolcraft
1989-6-6
1902
Lassen
n end Secret Valley ((w of Hwy 395))
1350
Comment
UC1609115
Agoseris glauca var. glauca
Vernon H. Oswald and Lowell Ahart
1993-6-14
5530
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
UC76006
Agoseris grandiflora var. grandiflora
Milo S. Baker
Lassen
s side Dixie Mt.
Comment
UC1048141
Agoseris heterophylla var. heterophylla
unknown
1937-1
475
Lassen
Red Rock
Comment
UC1125451
Agoseris parviflora
A. Simontacchi
1940-6-8
838
Lassen
1.2 mi ne Ebey Lake; Halls Flat Quad.
1699
Comment
UC1136777
Agoseris parviflora
L. R. Short and J. Warren
1936-6-5
S- 372
Lassen
Burgess Spr. Exp. Range Lassen National Forest
1798
Comment
UC585114
Agoseris parviflora
E. B. Babcock, G. L. Stebbins Jr.
1936-6-8
1793
Lassen
about 2 mi n Madeline
1363
Comment
UC773952
Agoseris parviflora
L. R. Short and J. Warren
1936-6-5
S- 372
Lassen
Burgess Spring Experiment Range Burgess Spring Experiment Range
1798
Comment
CAS-BOT-BC13412
Agoseris retrorsa
A. A. Heller
1940-5-22
15644
Lassen
Hill above Westwood Cemetary
1524
Comment
CHSC23552
Agoseris retrorsa
W. O. Baum
1971-6-28
19
Lassen
S slope of Gallatin Peak.
2042
Comment
UCD149818
Agropyron cristatum subsp. pectinatum
Harry George
1965-6-1
s.n.
Lassen
Susanville Airport.
Comment
SEINET10509717
Agropyron desertorum
Douglas G. LeDoux, David B. Dunn
1973-5-24
LeDoux 859
Lassen
Collected at jct of hwy 70 & 395 at arco station.
Comment
UCD52428
Agrostis exarata
L. Whitney
1933-8-2
2152
Lassen
Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest.
1920
Comment
RSA299277
Agrostis idahoensis
J. T. Howell, Gordon H. True
1973-8-1
50232
Lassen
Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville
2134
Comment
CHSC58860
Agrostis pallens
Vernon H. Oswald; Lowell Ahart
1992-7-16
5107
Lassen
Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21.
1745
Comment
JEPS71138
Agrostis pallens
Brown and Wieslander
73
Lassen
Comment
CAS-BOT-BC138624
Agrostis stolonifera
Margaret Williams; Steven Williams
1974-7-26
74 -L-40
Lassen
Sierra Nevada. Near Hallelujah Junction, west of Highway 395 and south of Highway 70.
1493
Comment
UCSC000092
Agrostis stolonifera
August L. Hormay
1932-7-20
s.n.
Lassen
Bogard Ranger Station - Lassen National Forest
Comment
JEPS28055
Agrostis thurberiana
George W. Gillett
1957-7-28
925 -a
Lassen
upper end Butte Lake (trail to Widow Lake above junction with Snag Lake trail, 100 yds above trail junction); Lassen Volcanic National Park
1859
Comment
CAS-BOT-BC138570
Agrostis variabilis
John Thomas Howell
1959-9-23
34890
Lassen
North end of Juniper Lake, Lassen Park.
2057
Comment
CAS-BOT-BC267061
Alisma
John Thomas Howell
1974-7-10
50546
Lassen
Elysian Valley
1325
Comment
UC978578
Alisma gramineum
Verne Grant and Irving Schneider
1947-7-31
8204
Lassen
irrigation ditch ne quarter George Williams section 19; Madeline Plain
Comment
UC985649
Alisma plantago-aquatica
Verne Grant and Irving Schneider
1947-9-6
8394
Lassen
near Wendel (w of Fleming Ranch Headquarters)
Comment
JEPS124714
Alisma triviale
P. Matteson
1968-7-9
86
Lassen
1.6 mi N of intersection of HWY 139 and Horse Lake Rd.
Comment
UCD150402
Alisma triviale
William Anderson
1963-7-10
s.n.
Lassen
Honey Lake Valley.
Comment
HSC81650
Allium acuminatum
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6026
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
CAS-BOT-BC461096
Allium anceps
B. Bartholomew; M. Gilbert; L. Skog
1993-5-13
6553
Lassen
Just S of Ravendale
1580
Comment
HSC47285
Allium anceps
Dale McNeal
1978-5-30
2127
Lassen
Beside Hwy. 395, 3 mi. S of Ravendale
Comment
NY247822
Allium bidwelliae
R. M. Austin
06 1879
s.n.
Lassen
Pine Creek Meadows.
Comment
UC1133790
Allium campanulatum
A. Simontacchi
1940-7-1
935
Lassen
2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle
Comment
HSC84127
Allium lemmonii
Dale McNeal
1983-6-5
2840
Lassen
Beside Eagle Lake Rd., 0.5 mi. N of Hwy. 36
Comment
POM110069
Allium lemmonii
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville.
1524
Comment
CAS-BOT-BC470922
Allium lemmonii
G. Schoolcraft
1993-6-10
2287
Lassen
Approx. 9.5 miles east of Madaline on Clark Valley Road
1828
Comment
CAS-BOT-BC470923
Allium lemmonii
B. Bartholomew; B. Anderson
1988-6-25
4371
Lassen
Long Valley, southern end of the Warner Mountains
2080
Comment
HSC47288
Allium lemmonii
Dale McNeal
1978-5-30
2129
Lassen
Beside Hwy. 395, 1.9 mi. S of Ravendale
Comment
POM260464
Allium lemmonii
C. L. Hitchcock
1940-5-26
6640
Lassen
Overflow of Pitt River, 1 mile W of Bieber
Comment
RSA27674
Allium lemmonii
C. L. Hitchock
1940-5-26
6640
Lassen
Overflow of Pitt River, 1 mile west of Bieber, in adobe soil
Comment
SEINET3884710
Allium lemmonii
D. W. McNeal
1983-6-6
2846
Lassen
Beside Highway $395, 4.5 miles South of the Modoc Co. line.; 0
Comment
HSC63955
Allium platycaule
Teresa Prendusi
1980-5-30
1123
Lassen
Mapes Spring, 11 mi. W of 395 and 19 mi. S Ravendale, near spring outflow
1585
Comment
UC1299751
Allium tolmiei var. tolmiei
Freed W. Hoffman
1946-6-9
731
Lassen
on Highway 395 about 10 mi s Alturas; Dry Creek
Comment
CHSC68894
Allophyllum integrifolium
Vernon Oswald; Lowell Ahart
1997-6-24
8604
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. (29N10). Bordering the stream.
1655
Comment
UC106708
Allophyllum integrifolium
T. S. Brandegee
1892-7-2
Lassen
Susanville
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
CHSC117285
Alopecurus carolinianus
Lowell Ahart; John Dittes
2016-7-15
21214
Lassen
About 300b yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) mortheast of Bieber, Big Valley.
1261
Comment
CHSC101019
Alyssum desertorum
John Dittes
2008-5-22
1538
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
JEPS118269
Alyssum minus subsp. micranthum
Lowell Ahart, John Dittes
2011-6-20
17493
Lassen
About 20 yards east 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
CDA42845
Alyssum minus var. micranthum
L. Ahart, John Dittes
2011-6-2
17493
Lassen
About 20 yards east 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.
Comment
CHSC27717
Amaranthus blitoides
Robert A. Schlising
1978-7-27
3319
Lassen
E of Eagle Lake and NE of Eagle L. Field Station.
1578
Comment
HSC31339
Amaranthus blitoides
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19304
Lassen
Along Hwy. 395 about 4 mi. E of Standish
Comment
JEPS123852
Amaranthus blitoides
Lowell Ahart, John Dittes
2015-7-14
20324
Lassen
About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment
JEPS78111
Amaranthus blitoides
Gary W. Zamzow
1972-7-18
86
Lassen
beside Highway 395, 3 mi n Hallelujah Junction
1371
Comment
HSC18512
Amelanchier alnifolia var. semiintegrifolia
H. E. Parks, S. T. Parks
1928-6-16
261
Lassen
Lassen National Park, Drakesbad
1677
Comment
UC12072
Amelanchier utahensis
Mrs. R. M. Austin and Bruce
Jun 1898
2338
Lassen
Comment
UC12108
Amelanchier utahensis
Mrs. R. M. Austin
Jun 1894
Lassen
Willow Creek Valley
Comment
UC773882
Amelanchier utahensis
L. R. Short
1936-5-22
S- 349
Lassen
Burgess Spring Experiment Range; Forest Lassen
1859
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
SEINET3872064
Amphiscirpus nevadensis
Richard 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.; 0
1559
Comment
JEPS114650
Amsinckia intermedia
Lowell Ahart, John Dittes
2008-6-20
14935
Lassen
On the levee road, about 100 yards south 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
HSC97154
Amsinckia menziesii
L. Ahart, John Dittes
2005-6-1
11899
Lassen
N side of Scott Rd., E of the railroad underpass, Long Valley, about 4.75 mi. N of the intersection of Scott Rd. and Hwy. 70, 6.2 mi. NW of Hallelujah Jct.
1460
Comment
RSA0089911
Amsinckia menziesii
L. Ahart
2005-6-1
11899
Lassen
North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction.
1460
Comment
JEPS124575
Amsinckia menziesii
Rechen
1964-6-30
84
Lassen
5 miles north of boundary edge of Modoc Nat. Forest on Lassen A-2 Road.
Comment
CDA40473
Amsinckia menziesii var. menziesii
L. Ahart, John Dittes
2005-6-1
11899
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.
Comment
HSC28822
Amsinckia tessellata
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19277
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
CHSC71073
Amsinckia tessellata var. tessellata
Vernon H. Oswald; Lowell Ahart
1998-5-22
9091
Lassen
Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford.
1255
Comment
UC1061762
Amsinckia tessellata var. tessellata
E. Sawyer
1935-6-27
236
Lassen
Long Valley
1310
Comment
RSA622142
Amsinckia tessellata var. tessellata
B. J. Cox, D. B. Dunn
1971-6-2
2574
Lassen
3 mi. S. of Hallelujah Jct., on U.S. Hwy. 395, Jct. of U.S. 395 & Calif. 70.
Comment
SEINET6734941
Anaphalis margaritacea
C. G. Gulling
1905-1
s.n.
Lassen
Big Meadows
Comment
CHSC71068
Anisocoma acaulis
Vernon H. Oswald; Lowell Ahart
1998-5-22
9134
Lassen
Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle.
1341
Comment
CAS-BOT-BC63953
Antennaria argentea
Clare B. Hardham
1969-8-28
17453 C.
Lassen
West of Janesville
Comment
CHSC5194
Antennaria argentea
A. Santos
1946-6-14
Lassen
Spalding's, Eagle Lake.
1558
Comment
JEPS88514
Antennaria argentea
Vernon H. Oswald and Lowell Ahart
1996-6-24
7837
Lassen
Forest Rd. 31N63 ca. 0.2 mi s spur road to the cabins at Papoose Meadow (ca. 0.5 mi e of Eagle Lake Rd. (A1) and 2.5 mi s of Eagle Lake); Modoc Plateau
1644
Comment
CAS-BOT-BC59217
Antennaria dimorpha
Doris Kildale Gillespie
1930-5-13
9392
Lassen
Between Susanville and Janesville
Comment
UC1951075
Antennaria dimorpha
Debra Valov
2009-4-25
2009016
Lassen
Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299
Comment
CAS-BOT-BC69136
Antennaria geyeri
John Thomas Howell
1934-7-8
12492
Lassen
Spalding's, Eagle Lake
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
POM39124
Antennaria geyeri
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
UC506910
Antennaria geyeri
George A. Fischer and Irwin H. Johnson
1933-7-17
F- 267
Lassen
Lassen National Forest
1722
Comment
RSA715539
Antennaria luzuloides
L. Ahart
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 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction.
1449
Comment
UC1137667
Antennaria luzuloides
L. R. Short and J. Warren
1936-6-23
S- 452
Lassen
Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range
1741
Comment
CAS-BOT-BC58695
Antennaria luzuloides
Doris Kildale Gillespie
1930-5-12
9317
Lassen
Fredonia Pass near Susanville
Comment
CAS-BOT-BC26645
Antennaria pyramidata
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat
1524
Comment
POM39272
Antennaria rosea
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt. Susanville. Perkin's Ranch.
2226
Comment
SBBG63415
Antennaria rosea
S. W. Hutchinson, M. N. Ackley
-Jun-1925
214
Lassen
Eagle Lake
1554
Comment
UC1523728
Antennaria rosea
Gary Schoolcraft
1982-7-14
800
Lassen
w of Constantia
1524
Comment
UC584289
Antennaria rosea
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2308
Lassen
w of, crest of range head of Stony Ridge Milford; Stony Ridge
1930
Comment
UCD128940
Antennaria rosea
Beecher Crampton
1960-6-18
5712
Lassen
Southern Warner Mtns., vicinity of Blue Lake Ranch.
1981
Comment
UCR18725
Antennaria rosea
Frank C. Vasek
1975-7-11
750711- 20
Lassen
Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd.
1650
Comment
JEPS49800
Apocynum androsaemifolium
Brown and Wieslander
1922-7-17
3
Lassen
Eagle Lake, Martin Springs
Comment
UC1037225
Apocynum androsaemifolium
Leo Whitney
1933-8-5
1594
Lassen
near Willow Spring Willow Spring (Bieber)
1645
Comment
CDA39744
Apocynum androsaemifolium
Taylor
1938-7-18
s.n.
Lassen
Susanville.
0
Comment
CHSC75442
Apocynum cannabinum
Vernon H. Oswald; Lowell 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.
1356
Comment
SEINET12319576
Apocynum pumilum
Unknown
1978-1
48
Lassen
Colman Lake, several mi SE of Eagle L., T31N R11E sec27
1963
Comment
SEINET5337698
Aquilegia formosa var. truncata
C. G. Gulling
1905-1
1544
Lassen
Big Meadows
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
NY119576
Arabis arcuata
W. W. Eggleston
1911-5-29
6727
Lassen
Vicinity of Doyle Station
1290
Comment
UC1504479
Arabis rectissima var. rectissima
Reed C. Rollins and Kathryn W. Rollins
1981-5-31
81172
Lassen
2.2 mi n CA Hwy 36 junction with County Hwy A-1
Comment
NY119616
Arabis sparsiflora var. subvillosa
R. C. Rollins
1981-5-31
81181
Lassen
5.3 miles S of junction of California Hwy. 139 and County Road 201
Comment
JEPS107301
Arceuthobium campylopodum
Lowell Ahart, John Dittes
2005-6-1
11894
Lassen
On the west side of Scott Road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.9 miles (air) northwest of Hallelujah Junction
1465
Comment
CAS-BOT-BC45893
Arctostaphylos nevadensis
A. H. Kramer
1929-1-1
s.n
Lassen
Prospect Peak
Comment
CAS-BOT-BC45903
Arctostaphylos nevadensis
Mrs. E. C. Sutliffe
1927-6-1
s.n
Lassen
Drakesbad, Lassen Volcanic Park
Comment
CAS-BOT-BC45910
Arctostaphylos nevadensis
Hans Leschke
1957-7-12
s.n
Lassen
Above Cold Boiling Lake
2316
Comment
CHSC5245
Arctostaphylos nevadensis
M. West
1946-7-12
Lassen
Eagle Lake. Silver Lake.
1981
Comment
HSC7705
Arctostaphylos patula
L. H. Myers
1963-4-14
39
Lassen
Janesville grade road, ca. 3 mi. S of Janesville
Comment
UC1137730
Arctostaphylos patula
L. R. Short
1936-5-7
S- 346
Lassen
Burgess Spr. Exp. Range Lassen <National> Forest
1859
Comment
UC82992
Arctostaphylos patula
T. S. Brandegee
1892-7-26
Lassen
Milford
Comment
CAS-BOT-BC42167
Arctostaphylos patula subsp. patula
C. Hart Merriam
1924-8-5
s.n.
Lassen
Pit River, Ponderosa ride between Big Valley and Pittville
Comment
CHSC36457
Arctostaphylos patula subsp. patula
Susan H. Euing
1982-6-5
11
Lassen
Base of northeast slope, Gallatin Peak, 1000 ft approx. from summit.
Comment
UCR18731
Arenaria congesta
Frank C. Vasek
1975-7-11
750711- 07
Lassen
Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd.
1650
Comment
JEPS46143
Arenaria congesta var. congesta
Duncan Dunning
1921-8-19
Lassen
3 m s Antelope Mountain (south and west of Eagle Lake. East tributary of Pine Creek.); Martin Spring, Pine Creek
Comment
UC465892
Arenaria congesta var. congesta
Franklin P. Nutting
Lassen
Silver Lake
Comment
NY342368
Arenaria congesta var. simulans
A. A. Heller
1938-6-23
15198
Lassen
East of Fredonyer Pass
1645.9
Comment
RSA313571
Arenaria congesta var. simulans
J. R. Shevock
1972-5-20
1816
Lassen
Along Hwy 395; near Ravendale.
1372
Comment
NY430990
Arenaria kingii subsp. plateauensis
G. Schoolcraft
1982-6-23
729
Lassen
Fort Sage Mountains
1920.2
Comment
CAS-BOT-BC401655
Argemone munita subsp. munita
John Thomas Howell
1955-7-19
30816
Lassen
East side of Beckwourth Pass
1493
Comment
RSA152609
Argemone munita subsp. rotundata
I. L. Wiggins, Dorothy B. Wiggins
1961-6-11
16352
Lassen
4.5 mi. e of Susanville
Comment
RSA647527
Argemone munita subsp. rotundata
Marion P. Harthill
1972-6-16
789
Lassen
Doyle.
Comment
CHSC60873
Arnica chamissonis
Vernon H. Oswald; Lowell Ahart
1993-7-8
5665
Lassen
Pittville Rd. (Lassen 111, 36N01) 2.4 mi N of Hwy. 44, on the NE edge of Poison Lake.
1705
Comment
CHSC66713
Arnica chamissonis
Vernon H. Oswald; Lowell Ahart
1996-8-1
8109
Lassen
Mountain Meadows Reservoir SW of Westwood.
1539
Comment
JEPS17745
Arnica chamissonis
Rimo Bacigalupi with G. T. Robbins
1955-7-20
5414
Lassen
Mosquito Creek (along), in Corporation Meadow, s end of Warner Mts. Modoc National Forest, Warner Mts., Corporation Meadow, Mosq
2042
Comment
RSA0115088
Arnica chamissonis subsp. foliosa
Lowell A. Ahart, John Dittes
2008-6-20
14902
Lassen
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 miles (air) northeast of Bieber.
1263
Comment
RSA32851
Arnica cordifolia
A. A. Heller
1938-6-4
15146
Lassen
More or less shaped gravelly slope in the yellow pine forest 1 mile east of Fredonyer Pass, on State Hwy #36
1738
Comment
UC36753
Arnica dealbata
M. S. Baker and Frank Nutting
1894-7-28
Lassen
mts s Eagle Lake
Comment
OBI76979
Arnica sororia
Anthony Baniaga
2011-6-23
389
Lassen
Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW
1675
Comment
CAS-BOT-BC85028
Arnica sororia
Clarence Quick
1963-7-12
63 -37
Lassen
Black Mountain Experimental Forest east of Halls Flat
1859
Comment
JEPS103204
Arnica sororia
G. Schoolcraft
1994-6-9
2346
Lassen
West of Hwy. 139 near Grasshopper valley
1706
Comment
UCD129182
Artemisia arbuscula
A. A. Beetle
1957-8-16
12766
Lassen
15 miles south of Alturas.
Comment Read comments Jul 11 2013
SD117633
Artemisia arbuscula subsp. arbuscula
Jack L. Reveal
1984-8-15
2842
Lassen
Along highway 44, ca. 19 miles north of Susanville
1584
Comment
UC1137582
Artemisia arbuscula subsp. arbuscula
A. Simontacchi
1940-9-16
947
Lassen
1.3 mi ne of Ebey Lake; Lassen National Forest, Halls Flat Quadrangle
1691
Comment
UC217036
Artemisia arbuscula subsp. arbuscula
H. M. Hall
1921-9-10
11674
Lassen
eastern Lassen County
Comment
SDSU6174
Artemisia cana subsp. bolanderi
D. F. Howe
1966-8-25
4302
Lassen
41 miles south of Alturas on #395.
1676
Comment
UC1242648
Artemisia cana subsp. bolanderi
A. A. Beetle
1957-8-16
12910
Lassen
Litchfield
Comment
UC747153
Artemisia cana subsp. bolanderi
G. Thomas Robbins
1945-10-18
2157
Lassen
Harvey Valley Lassen National Forest, Harvey Valley
1676
Comment
UCD129268
Artemisia cana subsp. bolanderi
W. Robert Powell
1985-7-30
3523
Lassen
16 air miles SSE of Adin (Modoc Co.), 0.9 mile SSE of Hayden Hill L.O., 0.4 mile west of Daisy Dean Spring. East slope, 3 percent.
1676
Comment
CAS-BOT-BC90329
Artemisia douglasiana
Clare B. Hardham
1969-8-28
17443
Lassen
slope west of Janesville
Comment
JEPS28717
Artemisia douglasiana
George W. Gillett
1957-7-29
955
Lassen
near Butte Lake Trail (above Snag Lake); Lassen Volcanic National Park
1859
Comment Read comments Aug 23 2012
CAS-BOT-BC90330
Artemisia douglasiana
Clare B. Hardham
1971-8-22
18374
Lassen
North slopes, Diamond Mountain
2133
Comment
CHSC77187
Artemisia dracunculus
G. Schoolcraft
1992-8-11
2248
Lassen
Near inters. of Wingfiled and Bass Hill Roads.
1322
Comment
JEPS37007
Artemisia dracunculus
W. L. Jepson
1918-8-3
7799
Lassen
Honey Lake Valley
1219
Comment
SEINET6775481
Artemisia dracunculus
G. Schoolcraft
1992-8-11
2248
Lassen
Near intersection of Wingfield and Bass Hill Roads
1323
Comment
JEPS124638
Artemisia lindleyana
Laurie Hooker
1965-7-13
119
Lassen
On highway 299 west under 2nd bridge of Pit river overflow.
Comment
SEINET245807
Artemisia nova
Arnold Tiehm, Gary Schoolcraft
2003-9-11
14368
Lassen
2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway
1402
Comment
CDA19747
Artemisia spinescens
D. Tillotson
1942-6-1
s.n.
Lassen
Modoc Plateau; Mud Flat.
0
Comment
CHSC60307
Artemisia tridentata
Mary Ann Showers
1992-6-13
2534
Lassen
Lassen Volcanic Naitonal Park. Trail from Snag Lake jct to Widow Lake.
1828
Comment
CHSC7180
Artemisia tridentata
Lynn R. Thomas
1969-4-17
99
Lassen
Ca. 100 yds down hillside W of Rice Canyon Rd. across small creek, 5 mi N of junction with 'back road to Litchfield', 12 mi E of Susanville.
1310
Comment
CAS-BOT-BC97327
Artemisia tridentata subsp. tridentata
R. K. Gierisch; D. H. Esplin
1969-8-27
3599
Lassen
Lassen National Forest
1706
Comment
CHSC110309
Artemisia tridentata subsp. tridentata
L. P. Janeway; B. Castro
2012-7-2
10927
Lassen
Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road.
1473
Comment
CHSC76080
Artemisia tridentata subsp. tridentata
Lowell Ahart; Vernon H. Oswald
1999-9-13
8202
Lassen
On the west side of the dirt road and 1/4 mile south of the sign-in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish.
1207
Comment
UC1136978
Artemisia tridentata subsp. tridentata
George A. Fisher and Irwin H. Johnson
1933-9-8
F 282
Lassen
Patterson Flat Lassen National Forest, Patterson Flat
1706
Comment
SEINET10580351
Asclepias cordifolia
Alice Eastwood, John Thomas Howell
1940-6-11
Eastwood 7995
Lassen
Nubieber
Comment
UC1096430
Asclepias speciosa
George A. Fischer, Irwin H. Johnson
1933-7-29
F- 276
Lassen
Stringer Lassen National Forest
1694
Comment
RSA401104
Asclepias speciosa
George Willet
1935-6-27
s.n.
Lassen
Susanville
Comment
CAS-BOT-BC478834
Asparagus officinalis
John Thomas Howell
1975-7-23
51397
Lassen
Susanville, Sierra Nevada
1295
Comment
RSA0027352
Astragalus
John F. Emmel
1994-7-17
1327
Lassen
Summit area of Observation Peak.
2378
Comment
RSA624916
Astragalus
B. J. Cox, Paul Gallian
1971-6-2
2599
Lassen
Hallelujah Jct. intersection of U.S. 395 and Hwy 70.
Comment Read comments Jan 15 2016
POM45145
Astragalus accidens var. hendersonii
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat.
1524
Comment
CAS-BOT-BC177440
Astragalus andersonii
G. Schoolcraft
1996-5-13
2520
Lassen
Fort Sage OHV area 3 miles ne of Doyle
1402
Comment
CDA26597
Astragalus andersonii
L. Ahart, J. Dittes
2005-6-1
11917
Lassen
On the east side of a poor road, 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.
Comment
NY791372
Astragalus andersonii
N. H. Holmgren
1970-6-25
4379
Lassen
North end of Petersen Mountain, near US 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction).
1524.0
Comment
CAS-BOT-BC178762
Astragalus canadensis var. brevidens
John Thomas Howell
1934-7-8
12504
Lassen
Spalding's, Eagle Lake
Comment
NY797391
Astragalus canadensis var. brevidens
G. Schoolcraft
1989-6-19
1920
Lassen
Along north shore of Eagle Lake
1554.5
Comment
UC1567413
Astragalus canadensis var. brevidens
G. Schoolcraft
1989-6-19
1920
Lassen
along n shore Eagle Lake; n shore Eagle Lake
1554
Comment
CAS-BOT-BC178763
Astragalus canadensis var. brevidens
John Thomas Howell
1977-8-11
52718
Lassen
EAst of Beckwourth Pass, near Halleluja Junction - Sierra Nevada
1554
Comment
SEINET5323826
Astragalus canadensis var. brevidens
G. Schoolcraft
1999-6-29
2845
Lassen
Along road to Buckhorn Res. East of Madeline Plains
1713
Comment
CDA26649
Astragalus curvicarpus
T. C. Fuller
1965-6-3
13607
Lassen
1.3 miles west-northwest of Janesville.
0
Comment
RSA111041
Astragalus curvicarpus
H. D. Ripley, R. C. Barneby, F. C. Ripley Jr.
1943-6-13
5676
Lassen
N or Doyle.
1265
Comment
RSA152593
Astragalus curvicarpus
I. L. Wiggins, Dorothy B. Wiggins
1961-6-11
16331
Lassen
13.5 mi. E of Susanville.
Comment
RSA60316
Astragalus curvicarpus
E. K. Balls
1950-5-9
15949
Lassen
6 miles south of Doyle, Hwy 395.
1372
Comment
SEINET948261
Astragalus curvicarpus
Ira. L. Wiggins, Dorothy B. Wiggins
1961-1
16331
Lassen
Gravelly slopes at margin of grain field 13.5 mi. E of Susanville, sec 36
Comment
CHSC7676
Astragalus curvicarpus var. curvicarpus
Beverly J. Wise
1969-5-18
53
Lassen
7.7 mi. East of Susanville on the south side of Las. Co. Rd. 215.
1341
Comment
UCD55155
Astragalus curvicarpus var. curvicarpus
Ellen Dean
2006-5-15
3043
Lassen
E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility.
1247
Comment
CAS-BOT-BC177835
Astragalus curvicarpus var. curvicarpus
Alice Eastwood; John Thomas Howell
1940-6-16
8346
Lassen
Buntingville
Comment
CHSC106082
Astragalus filipes
Lowell Ahart; John Dittes
2010-7-31
16976
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
NY813074
Astragalus filipes
R. W. Spellenberg
1996-6-13
12334
Lassen
26 km south of Doyle on U.S. Highway 395
1430
Comment
SEINET5325729
Astragalus filipes
M. J. Williams
1983-7-31
83- 125 -1
Lassen
Ash Valley road, 17 mi from Aden.
1829
Comment
POM24783
Astragalus gibbsii
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1220
Comment
CAS-BOT-BC186911
Astragalus inversus
Leo Whitney
1935-7-21
1931
Lassen
Near Harvey Valley Spring, Lassen N.F.
1737
Comment
CAS-BOT-BC186914
Astragalus inversus
H. D. Ripley; R. C. Barneby
1943-6-14
5740
Lassen
Mesa W. of Susanville
1371
Comment
RSA517314
Astragalus inversus
Barbara Ertter
1987-7-25
7314
Lassen
Ca 27 airmiles NW of Susanville, FR33N02 to Harvey Valley W of jct w/ FR33N04
1737
Comment
UC1561990
Astragalus inversus
Barbara Ertter
1987-7-25
7314
Lassen
ca 27 airmi nw Susanville (FR33N02 to Harvey Valley w of jct w/FR33N04); nw of Susanville
1737
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
CAS-BOT-BC186942
Astragalus iodanthus
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west of Amedee
1219
Comment
CAS-BOT-BC178216
Astragalus kentrophyta
Mike Vasey
1990-6-30
9049
Lassen
Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road, Modoc National Forest
1500
Comment
CHSC115597
Astragalus lemmonii
Lowell Ahart; John Dittes
2015-7-14
20336
Lassen
On the west side 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
POM45790
Astragalus lemmonii
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat.
1616
Comment
UC1128892
Astragalus lentiginosus var. lentiginosus
A. Simontacchi
1940-6-8
844
Lassen
Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest)
Comment
RSA0059601
Astragalus lentiginosus var. salinus
Lowell Ahart, John Dittes
2011-6-20
17510
Lassen
Near edge of the Ash Valley Road, 3,210 feet south of the Ash Creek Campground, about 6.5 (air) southeast of Adin.
1511
Comment
SEINET10486634
Astragalus malacus
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2599
Lassen
Hallalujah jct intersection of us hwy 395 & calif hwy 70; in open waste area Adjacent to artemisia tridentata community.
1433
Comment
UC1128861
Astragalus pulsiferae
E. Sawyer
1935-6-27
237
Lassen
Long Valley Sierraville Quad., Long Valley
Comment
UC1483870
Astragalus pulsiferae
G. Schoolcraft
1980-7-10
301 A
Lassen
near Eagle Lake Campground (at n end of Eagle Lake); n end Eagle Lake, near Eagle Lake campground
1584
Comment
RSA339984
Astragalus pulsiferae var. pulsiferae
Noel Holmgren, Patricia K. Holmgren
1980-7-4
9500
Lassen
Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale.
1890
Comment
CAS-BOT-BC194094
Astragalus purshii var. purshii
Clare B. Hardham
7446
Lassen
Diamond Peak
2286
Comment
CAS-BOT-BC194097
Astragalus purshii var. purshii
Alice Eastwood; John Thomas Howell
1940-6-16
8352
Lassen
Omira
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
JEPS108699
Astragalus purshii var. purshii
H. Chappel, K. Moran, K. Strassman
2002-6-27
ALT- 13
Lassen
Pit River Valley / Beaver Creek
1258
Comment
CAS-BOT-BC194091
Astragalus purshii var. purshii
Ellsworth Bethel
1923-5-24
s.n.
Lassen
Poison Lake
Comment
RSA0006859
Astragalus purshii var. purshii
H. D. Ripley, R. C. Barneby, F. C. Ripley Jr.
1944-5-29
5957
Lassen
Susanville
Comment
JEPS114761
Astragalus purshii var. tinctus
Lowell Ahart, John Dittes
2008-6-19
14888
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
NY694434
Astragalus purshii var. tinctus
W. W. Eggleston
1911-5-29
6711
Lassen
Vicinity of Doyle Station
Comment
RSA38443
Astragalus purshii var. tinctus
P. A. Munz
1947-5-19
12269
Lassen
Hwy 395, 3.5 miles S of Ravendale.
1616
Comment
UC1128897
Astragalus whitneyi
A. Simontacchi
1940-6-6
824
Lassen
9.3 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad.
Comment
CHSC67217
Astragalus whitneyi var. confusus
James D. Jokerst
1991-5-29
3303
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
CHSC68862
Astragalus whitneyi var. confusus
Vernon H. Oswald; Lowell Ahart
1997-6-24
8634
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
JEPS90987
Astragalus whitneyi var. confusus
Dean Wm. Taylor with Glenn Clifton
1990-6-12
10887
Lassen
along creek at crossing of Road 527 (Forest Road 39N08); Modoc Plateau, Ash Valley, Ash Creek
1554
Comment
SD109653
Astragalus whitneyi var. confusus
James Vale, Keith Wagnon, Walter & Irja Knight
1981-5-24
4136
Lassen
3 mi S of Adin on Hwy #139
1372
Comment
UC1567401
Astragalus whitneyi var. whitneyi
G. Schoolcraft
1989-6-19
1915
Lassen
Ash Valley RNA/ACEC
1554
Comment
UC1730231
Astragalus whitneyi var. whitneyi
L. P. Janeway
1998-7-8
5722
Lassen
ridgetop saddle 2.4 mi NW of Red Rock (along road 213, 0.1 mi E of jct of Roads 28N08, 29N10, 213, and 28N55); ; Ridgetop saddle about 2.4 mi northwest of Red Rock; along Road 213, 0.1 mi east of the junction of Roads 28N08, 29N10, 213, and 28N55.
1988
Comment
CHSC107993
Athysanus pusillus
Lowell Ahart; John Dittes
2011-6-20
17491
Lassen
About 40 yards east of the stream, about 70 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
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
CHSC110306
Atriplex confertifolia
L. P. Janeway; B. Castro
2012-7-2
10924
Lassen
Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel.
1221
Comment
UC527347
Atriplex confertifolia
C. B. Wolf
1931-9-5
2402
Lassen
on road to Doyle 1/2 mi from Amedee R.R. station (Honey Lake Valley); , 1/2 mi from Amedee R.R. station
Comment
JEPS94696
Atriplex gmelinii var. gmelinii
Vernon H. Oswald and Lowell Ahart
1998-9-8
9581
Lassen
2.2 mi n of Bieber (on County Road 91 (Bieber-Lookout Road)); Ash Creek and Big Swamp, County Road 91
1258
Comment
UCD50220
Atriplex hortensis
Daniel B. Marcum
2005-6-3
Lassen
Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County.
1005
Comment
RSA518558
Atriplex rosea
George K. Helmkamp
1990-9-23
H- 7
Lassen
N of Ravendale
1677
Comment
CHSC76274
Atriplex triangularis
Lowell Ahart; Vernon Oswald
1999-9-13
8209
Lassen
On the edge of a flooded field just south 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
NY652204
Atriplex truncata
G. Schoolcraft
1998-7-21
2334
Lassen
Near Phone Spring south of Rush Creek
1402.1
Comment
JEPS103182
Balsamorhiza
G. Schoolcraft
2000-4-26
2893
Lassen
West of Grasshopper Valley
1706
Comment
RSA584835
Balsamorhiza hirsuta
Bruce Bartholomew, M. Gilbert, L. Skog
1993-5-13
6557
Lassen
Just S. of Ravendale.
1580
Comment
CAS-BOT-BC106485
Balsamorhiza hookeri
Helen K. Sharsmith
1955-6-22
4501
Lassen
Warner Mountains, Modoc National Forest - Five miles beyond Blue Lake on road to Likely
1767
Comment
CAS-BOT-BC106486
Balsamorhiza hookeri
Elmer I. Applegate
1934-5-4
8919
Lassen
Plains at south end of Secret Valley
Comment
CAS-BOT-BC106488
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-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
UC1137702
Balsamorhiza hookeri
A. Simontacchi
1940-5-27
790
Lassen
1.1 mi sw of Dixie Spring (Halls Flat); Halls Flat
1699
Comment
UC964788
Balsamorhiza hookeri
Milo S. Baker
1952-5-23
12432
Lassen
1/2 mi west of Fredonyer Pass, Highway 36
Comment
UCD159570
Balsamorhiza hookeri
D. S. Park
2011-6-27
307
Lassen
East of Westwood. Growing near Willard Creek.
1471
Comment
SEINET10924971
Balsamorhiza hookeri
Billy Joe Cox
1971-6-2
Cox 3265
Lassen
Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia.
1341
Comment
UC336215
Balsamorhiza hookeri
unknown
Lassen
near Susanville
Comment
CAS-BOT-BC100053
Balsamorhiza lanata
B. Bartholomew; M. Gilbert; L. Skog
1993-5-13
6557
Lassen
Just S of Ravendale
1580
Comment
UCD129528
Balsamorhiza macrolepis
Tom Vestal DVM
2002-5-23
s.n.
Lassen
south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir.
Comment
SEINET10617239
Balsamorhiza sagittata
Billy Joe Cox
1971-6-2
Cox 3216
Lassen
Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia.
1646
Comment
CAS-BOT-BC16435
Barbarea orthoceras
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49464
Lassen
Sierra Nevada. Elysian Valley, west of Janesville.
1325
Comment
CAS-BOT-BC16436
Barbarea orthoceras
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49177
Lassen
Sierra Nevada. Elysian Valley, northwest of Janesville.
1325
Comment
CDA43005
Barbarea orthoceras
L. Ahart, John Dittes
2008-6-2
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.
Comment Read comments Oct 5 2019
HSC26615
Barbarea orthoceras
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19151
Lassen
3 mi. N of Westwood
Comment
JEPS114368
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
NY119712
Barbarea orthoceras var. dolichocarpa
J. T. Howell
1973-6-28
49464
Lassen
Elysian Valley, W of Janesville
1325.9
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
RSA783700
Bassia hyssopifolia
R. R. Halse
2010-8-25
8088
Lassen
Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake.
1559
Comment
UC1191423
Bassia hyssopifolia
Verne Grant and Irving Schneider
1947-9-6
8390
Lassen
near Wendel (irrigation ditch w of Fleming Ranch Headquarters)
Comment
JEPS127216
Beckmannia syzigachne
Lowell Ahart, John Dittes
2016-7-15
21216
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
UC188777
Beckmannia syzigachne
Milo S. Baker
Lassen
Dixey Valley
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
CAS-BOT-BC169400
Betula glandulosa
John Thomas Howell
1934-7-9
12514
Lassen
Bridge Creek Spring
Comment
NY526245
Betula glandulosa
B. M. Bartholomew
1988-7-22
4500
Lassen
Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain.
2080
Comment
UC1135177
Betula glandulosa
D. Dunning
1935-9-5
Lassen
Bridge Creek Lassen National Forest, Eagle Lake Quadrangle
Comment
CAS-BOT-BC413001
Bistorta bistortoides
A. A. Heller
1938-6-4
15141
Lassen
2 miles east of Westwood
1402
Comment
SBBG29153
Bistorta bistortoides
A. A. Heller
1938-6-23
15141
Lassen
2 mi E of Westwood
Comment
CAS-BOT-BC127971
Blepharipappus scaber
David D. Keck; J. Clausen
1935-6-25
3754
Lassen
Susanville, on hills just west of town
1310
Comment
CAS-BOT-BC128014
Blepharipappus scaber
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee
1219
Comment
CAS-BOT-BC128042
Blepharipappus scaber
David D. Keck; J. Clausen
1935-6-24
3733
Lassen
2 mi. S. of Ravendale
1463
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
CHSC4444
Blepharipappus scaber
K. R. Stern
1967-7-1
2444
Lassen
Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station.
1554
Comment
RSA713115
Blepharipappus scaber
L. P. Janeway
2005-7-4
8462
Lassen
Ridge top north above Long Valley; 0.4 km west of Road 34N41. High Cascade Range
1752
Comment
SBBG30617
Blepharipappus scaber
D. Myrick
1968-6-19
1958
Lassen
Hwy 395, 23 mi S of Alturas
1524
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
UC1119057
Blepharipappus scaber
A. Simontacchi
1940-7-8
5575
Lassen
5.1 mi s of Jelly Camp (Halls Flat); Halls Flat
1699
Comment
RSA637596
Blepharipappus scaber
Michael A. Vincent
1999-6-9
8578
Lassen
Bureau of Land Management land, Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), S of BLM road 1614, and southwest of Termo. Along jeep road to Schott Canyon.
Comment
SEINET3132721
Blepharipappus scaber
J. L. Strother
1970-5-13
953
Lassen
ca. 6 mi. N of Honey Lk.
1280
Comment
CAS-BOT-BC14089
Boechera pauciflora
A. Simontacchi
1940-6-6
822
Lassen
10.2 miles SE of Nigger Cabin.
1737
Comment
UC1504460
Boechera pauciflora
Reed C. Rollins and Kathryn W. Rollins
1981-5-31
81178
Lassen
just n Eagle Lake
Comment
CHSC60335
Boechera pinetorum
Mary Ann Showers
1992-6-13
2542
Lassen
Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake.
1828
Comment
CHSC107324
Boechera retrofracta
Lowell Ahart; John Dittes
2011-6-20
17509
Lassen
Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin.
1511
Comment
CHSC60730
Boechera retrofracta
Vernon H. Oswald; Lowell Ahart
1993-6-14
5512
Lassen
Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. Roadside.
1810
Comment
CHSC99133
Boechera retrofracta
Lowell Ahart; John Dittes
2008-6-19
14884
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
JEPS118280
Boechera retrofracta
Lowell Ahart, John Dittes
2011-6-20
17509
Lassen
Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin
1511
Comment
UC1609108
Boechera retrofracta
Vernon H. Oswald and Lowell Ahart
1993-6-14
5512
Lassen
ca 4 mi (air) w Eagle Lake (Lassen A1 (Eagle Lake Rd), 1.0 mi n of its jct with Lassen A21 (32N02), on the w edge of Brockman Flat Lava Beds); Brockman Flat Lava Beds
1810
Comment
CAS-BOT-BC25511
Boechera retrofracta
Clarence Roy Quick
1961-6-21
61 -24
Lassen
Black Mountain Experimental Forest northeast of Lassen Peak. Forest adjacent to Road 21.
1798
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
CAS-BOT-BC25707
Boechera sparsiflora
H. D. Ripley; R. C. Barneby
1943-6-13
5702
Lassen
South of Gifford.
1569
Comment
CAS-BOT-BC25864
Boechera subpinnatifida
Doris Kildale Gillespie
1930-5-14
9382
Lassen
Fredonia [Fredonyer] Pass near Susanville.
Comment
POM253282
Boisduvalia densiflora var. pallescens
A. A. Heller
1938-7-28
15296
Lassen
About a mile east of Westwood
1524
Comment
UC1537621
Bolboschoenus maritimus
Gordon H. True Jr.
1939-7-6
1025
Lassen
George Bailey Ranch Honey Lake Valley
Comment
CAS-BOT-BC127868
Brickellia greenei
Clare B. Hardham
1969-8-28
17430 A
Lassen
Granitic slope west of Janesville
Comment
SD197665
Brickellia microphylla
G. K. Helmkamp
1990-9-23
B 15
Lassen
Modoc Plateau: Susanville.
1189
Comment
UCR202646
Brickellia microphylla
George K. Helmkamp
1990-9-23
B- 15
Lassen
Modoc Plateau, Susanville
1189
Comment
UC1249280
Brodiaea coronaria subsp. coronaria
Arthur Cronquist and Arthur H. Holmgren
1959-6-18
8485
Lassen
5 mi s Adin
Comment
UC60846
Bromus
M. S. Baker and Frank Nutting
1894-7-3
Lassen
Dixie Mountains
Comment
RSA0065492
Bromus breviaristatus
Marion P. Harthill
1971-6-21
208
Lassen
Susanville.
Comment
CHSC63436
Bromus briziformis
Vernon H. Oswald; Beth Corbin, Michael Dolan
1994-6-18
6308
Lassen
Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline.
1767
Comment
SEINET222548
Bromus briziformis
Noel H. Holmgren, Patricia K. Holmgren
1978-6-11
8909
Lassen
Vicinity of spring at fork to Painters Flat on east side of Observation Peak 28 km east of Ravendale and 22.5 km airlin
1680
Comment
SEINET3921578
Bromus briziformis
Noel H. Holmgren, Patricia K. Holmgren
1978-6-11
8909
Lassen
Vicinity of spring at fork to Painters Flat on east side of Oberservation Peak. 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance.; 0
1680
Comment
UC1143035
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
CAS-BOT-BC155276
Bromus inermis
Louella Bass
1980-8-4
s.n.
Lassen
Standish.
Comment
CAS-BOT-BC155324
Bromus inermis
John Thomas Howell
1973-7-10
49766
Lassen
Sierra Nevada. Near Westwood.
1554
Comment
UCD58839
Bromus inermis
M. C. Collins
1926-6-14
s.n.
Lassen
Susanville.
Comment
CDA1827
Bromus japonicus
A. A. Beetle
1941-6-28
2809
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak.
0
Comment
SEINET10717734
Bromus japonicus
Vernon H. Oswald, Lowell Ahart
1999-6-9
Oswald 9750
Lassen
T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area.
Comment
UC1136819
Bromus suksdorfii
George A. Fischer and Irwin H. Johnson
1933-7-14
F 261
Lassen
Lassen National Forest
1783
Comment
CHSC106670
Bromus tectorum
B. Ignacio
2008-5-3
Lassen
Fort Sage Mountains.
1520
Comment
CHSC23519
Bromus tectorum
Wayne O. Baum
1971-7-5
71 -15
Lassen
S. slope of Gallatin Peak.
2042
Comment
HSC79991
Bromus tectorum
William Rothstrom
1975-6-9
Lassen
Johnstonville, 0.25 mi. S of Hwy. 395, W of airport
Comment
RSA715626
Bromus tectorum
L. Ahart, John Dittes
2005-6-1
11909
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.
Comment
UC604684
Bromus tectorum
Farris Farris
1935-6-15
Lassen
Susanville
1310
Comment
RSA128308
Callitriche hermaphroditica
P. H. Raven, Otto T. Solbrig
1958-6-17
13260
Lassen
Along U.S. Hwy 395, 2.1 miles NE of Standish.
Comment
CAS-BOT-BC80346
Calocedrus decurrens
John Thomas Howell
1976-7-19
51964
Lassen
on Gold Run Creek southwest of Susanville
1386
Comment
UCD132943
Calocedrus decurrens
T. E. Weier; Katrina Weier
1946-9-1
s.n.
Lassen
Lassen National Park.
Comment
CAS-BOT-BC487806
Calochortus coeruleus
T. S. Brandegee
1892-7-2
s.n.
Lassen
Susanville, Calif
Comment
UC1523812
Calochortus leichtlinii
Gary Schoolcraft
1983-7-19
1096
Lassen
s slope Fredonyer Peak
2255
Comment
CHSC34600
Calyptridium umbellatum
Cindy Prouty
1978-7-10
17
Lassen
Colman L. area, SE of Eagel L.
1962
Comment
UCD39132
Calyptridium umbellatum
Beecher Crampton
1964-6-25
7074
Lassen
25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest.
1722
Comment
SDSU5718
Calystegia occidentalis subsp. occidentalis
D. F. Howe
1964-8-1
3915
Lassen
Modock National Forest.
1829
Comment
RSA339996
Calystegia polymorpha
Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren
1980-7-9
9581
Lassen
Surprise Valley, 23.7 km (14.7 mi) south of Fort Bidwell.
1402
Comment
CHSC7660
Camassia quamash
Beverly J. Wise
1969-5-18
142
Lassen
Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake.
1554
Comment
OBI75874
Camassia quamash
Anthony Baniaga
2011-6-7
312
Lassen
Lassen Natl Forest. NW area of Grays Valley, just S of intersection of 33N11 and 32N 83Y. Poison Lake quad T32N R7E sec 11 SW of NE
1747
Comment
CHSC99737
Camassia quamash subsp. breviflora
Lowell Ahart; John Dittes
2008-6-20
14905
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
HSC15435
Camassia quamash subsp. breviflora
Jim Vaughn
1956-7-13
Lassen
Drakesbad, Mt. Lassen Natl. Park
1738
Comment
SEINET8197883
Camassia quamash var. breviflora
J. A. Young
1982-6-9
s.n.
Lassen
Meyer's Ranch, Adin.
1372
Comment
RSA339990
Camissonia andina
Noel Holmgren, Patricia K. Holmgren
1980-7-5
9521
Lassen
Lassen County: upper Smoke Creek drainage, 20.4km (12.7miles) from Hwy 395 via Rye Patch Canyon, 24km (15miles) airline distance SE of Ravendale
1585
Comment
NY850967
Camissonia boothii subsp. alyssoides
A. Tiehm
1980-5-29
5754
Lassen
North end of Honey Lake Valley, 2 air miles northwest of Wendel
1231
Comment
SEINET3282784
Camissonia boothii subsp. alyssoides
Marcus E. Jones
1897-6-23
Lassen
Amedee.
1219
Comment
HSC63958
Camissonia claviformis subsp. cruciformis
Teresa Prendusi
1980-5-6
Lassen
Honey Lake area
Comment
POM38501
Camissonia claviformis subsp. cruciformis
Marcus E. Jones
1897-6-23
s.n.
Lassen
Amedee.
1220
Comment
JEPS107981
Camissonia parvula
Lowell Ahart, John Dittes
2005-6-2
11938
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 interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction
1600
Comment
JEPS94108
Camissonia pubens
Vernon H. Oswald and Lowell Ahart
1998-5-22
9136
Lassen
ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.)
1341
Comment
RSA113688
Camissonia tanacetifolia
H. K. Sharsmith
1955-6-27
4511 -B
Lassen
Adjacent to State Highway 299 near Fall River Mills, Lassen National Forest
1220
Comment
CAS-BOT-BC160873
Camissonia tanacetifolia subsp. tanacetifolia
John Thomas Howell
1934-6-10
11883
Lassen
12 miles n. of Susanville on road to Horse Lake
Comment
RSA339989
Camissonia tanacetifolia subsp. tanacetifolia
Noel Holmgren, Patricia K. Holmgren
1980-7-3
9477
Lassen
Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline
1616
Comment
RSA60365
Camissonia tanacetifolia subsp. tanacetifolia
E. K. Balls
1950-5-9
15954
Lassen
0.5 mi. south of Modoc Co. Line, Highway 395
1220
Comment
CAS-BOT-BC282942
Canadanthus modestus
B. Bartholomew; B. Anderson
1988-7-22
4499
Lassen
Mosquito Creek ca 2 km SW of Patterson Meadow, S end of the Warner Mountains
2080
Comment
CAS-BOT-BC37010
Capsella bursa-pastoris
John Thomas Howell
1974-7-8
50514
Lassen
Sierra Nevada. Susanville.
1295
Comment
CHSC116087
Capsella bursa-pastoris
Lowell Ahart; John Dittes
2015-7-13
20308
Lassen
About 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
JEPS124378
Capsella bursa-pastoris
Lowell Ahart, John Dittes
2015-7-13
20308
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
CAS-BOT-BC37252
Cardamine breweri
Louella Bass
1980-5-22
s.n.
Lassen
Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville.
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
CAS-BOT-BC18447
Carex abrupta
George Wilson Gillett
1957-7-21
867
Lassen
Lassen Volcanic National Park. Swale below (north of) summit of trail between Juniper Lake and Cameron Meadow.
2118
Comment
CHSC76790
Carex angustata
L. P. Janeway
1999-9-5
6574
Lassen
High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow.
1900
Comment
JEPS28338
Carex angustata
George W. Gillett
1957-7-22
883
Lassen
campsite near s end of lake; Lassen Volcanic National Park, Snag Lake
1850
Comment
JEPS63614
Carex angustata
Leland S. Smith
1922-7-30
68
Lassen
Martin Spring Meadow Lassen National Forest
Comment
SEINET13327167
Carex aquatilis var. aquatilis
J. Atchley
1993-5-5
1
Lassen
Along willow creek.
1219
Comment
UC1776659
Carex aquatilis var. aquatilis
Jenn Atchley
1993-5-5
1
Lassen
Along willow creek, in watering gap, petroglyphs.
1219
Comment
UC50815
Carex athrostachya
J. Burtt Davy
Jun 17-24 1897
3298
Lassen
Honey Lake Valley, slough near Dr. Witt's
Comment
CHSC77241
Carex aurea
G. Schoolcraft
1998-7-7
2755
Lassen
Along Pine Creek NE. of Fredonyer Peak.
1645
Comment
UC2015835
Carex breweri
Ron Mastrogiuseppe, Joy Mastrogiuseppe
1986-8-2
4446
Lassen
Lassen Volcanic National Park. Lassen Peak.
Comment
HSC95168
Carex cusickii
Gordon Leppig, J. Cromwell
1997-7-26
600
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
SEINET11309924
Carex davyi
D. E. Lepley
2012-1
1
Lassen
On the South flank of Whaleback Mt., about 3.5 air miles NNW of Christie Campground at Eagle Lake and about 500 feet from FS21 (Road 32N02), on the Pikes Point 7.5' quad. UTM (NAD83, Garmin GPSmap 60CS): 0680730 x 4498190 at the northernmost, 0680750 x 4498124 at the southernmost.
Comment
CDA33057
Carex densa
T. C. Fuller
1966-7-2
14963
Lassen
South side of road to Pittsville, 5.4 miles west of Little Valley Post Office. Northwest part of county.
0
Comment
UC1748339
Carex disperma
L. P. Janeway
1999-9-5
6575
Lassen
NW corner of Upper Stephens Meadow (Upper Pine Creek near Stephens Camp); High Cascade Range
1900
Comment
CHSC68770
Carex douglasii
Vernon H. Oswald; Lowell Ahart
1997-5-27
8502
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
POM80614
Carex douglasii
Marcus E. Jones
1897-6-21
s.n.
Lassen
Chat.
1616
Comment
UC1537637
Carex douglasii
Gordon H. True Jr.
1939-6-15
996
Lassen
w Grasshopper Lake; Bullard Lake
Comment
UC1776677
Carex douglasii
G. Schoolcraft
1995-5-22
2486
Lassen
East of Skedaddle Ranch
1554
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
CAS-BOT-BC19776
Carex douglasii
L. P. Janeway
1990-7-4
3766
Lassen
Plumas National Forest. Milford Ranger District. East side of saddle, ca. 0.8 mile northeast of Meadowview Peak.
1981
Comment
CAS-BOT-BC20166
Carex filifolia var. erostrata
John Thomas Howell
1934-7-6
12451
Lassen
Harvey Valley.
Comment
CHSC60783
Carex filifolia var. erostrata
Vernon H. Oswald; Lowell Ahart
1993-6-3
5472
Lassen
Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville.
1749
Comment
CHSC89755
Carex filifolia var. erostrata
L. P. Janeway
2004-6-26
8162
Lassen
High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest.
1767
Comment
JEPS118277
Carex filifolia var. erostrata
Lowell Ahart, John Dittes
2011-6-20
17501
Lassen
About 40 yards west of the stream, about 50 yards northwest 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
SEINET7558601
Carex filifolia var. erostrata
Richard Driscoll
1965-5-31
s.n.
Lassen
Lassen. Bogard Ranger Sta., Harvey Valley, NW of Susanvile.
1707
Comment
CAS-BOT-BC22274
Carex hassei
Ralph K. Gierisch
1968-7-12
3360
Lassen
Hwy. 36 at Goodrich Creek.
1554
Comment
JEPS28381
Carex hoodii
George W. Gillett
1957-7-29
946
Lassen
along trail between Snag Lake and Butte Lake; Lassen Volcanic National Park
1859
Comment
CHSC115041
Carex inops subsp. inops
Stephanie Puentes
2011-7-7
09419
Lassen
Big Foot THP. In the Big Valley Mountains, west of Big Valley. About 5 air miles SW of Lookout and 6 air miles NW of Bieber.
1447
Comment
SEINET4292184
Carex integra
Unknown
2003-1
7916
Lassen
High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7(air) km west of Clover Valley. Swain Mountain 7.5' quad.
Comment
UC1133501
Carex integra
A. Simontacchi
1940-5-14
720
Lassen
4.1 mi wnw Aspen Well; Lassen National Forest, Halls Flat Quadrangle
Comment
CHSC96442
Carex interior
Gordon Leppig
1998-7-12
954
Lassen
Modoc National Forest. Blue Lake Ranch.
1970
Comment
HSC95182
Carex interior
Gordon Leppig
1998-8-17
1055
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
UC1609339
Carex lasiocarpa
Vernon H. Oswald and Lowell Ahart
1993-8-3
5752
Lassen
e Silver Lake (nw part of the swamp, just e of the Caribou Wilderness, ca. 13 mi (air) n of Lake Almanor); Cooper Swamp
1932
Comment
JEPS88667
Carex lenticularis var. impressa
Dean W. Taylor
1975-8-24
5407
Lassen
margin of Everett Lake Thousand Lake Wilderness Area, Magee Peak, Everett Lake
2307
Comment
CHSC114406
Carex microptera
Don Lepley
2014-6-24
Lassen
Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A.
2133
Comment
UC1136940
Carex microptera
George A. Fischer, Irwin H. Johnson
1933-7-12
F 237
Lassen
Patterson Flat Lassen Forest
1737
Comment
CAS-BOT-BC31947
Carex microptera
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50699
Lassen
Steep rocky slope S and SE of Diamond Mt.
2286
Comment
CHSC59187
Carex multicaulis
Vernon H. Oswald; Lowell Ahart
1992-9-15
5217
Lassen
Lassen Volcanic National Park. Ca. 0.3 mi SW of Island Lake, on the NW foot of Bonte Pk., ca. 1.5 mi E of Juniper Lake campgrounds.
2133
Comment
UC1583950
Carex multicaulis
G. Schoolcraft
1990-5-15
2049
Lassen
about 4 mi s Nubieber; John's Valley
1310
Comment
CAS-BOT-BC32195
Carex multicaulis
H. D. Ripley; R. C. Barneby
1943-6-14
5730
Lassen
Fredonyer Pass
1676
Comment
CHSC29957
Carex multicostata
Robin L. Ondricek
1978-6-27
78
Lassen
On Coleman Lake Rd., .7 mi ne of Lassen Co. Rd. A1.
1950
Comment
CHSC85991
Carex nebrascensis
L. P. Janeway
2003-7-24
7913
Lassen
High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit.
1716
Comment
CHSC98668
Carex nebrascensis
Thomas W. Nelson; Jane P. Nelson
1985-8-10
8019
Lassen
In lake side bog along north side of Silver Lake.
1828
Comment
CHSC58857
Carex pellita
Vernon H. Oswald; Lowell Ahart
1992-7-16
5120
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
JEPS106522
Carex petasata
L. P. Janeway
2004-6-26
8139
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
UC506938
Carex petasata
George A. Fischer, Irwin H. Johnson
1933-7-12
Lassen
Patterson Flat Lassen National Forest
1737
Comment
CHSC43570
Carex praegracilis
Lowell Ahart
1974-7-9
540
Lassen
Along the edge of the road, near the south edge of Eagle Lake.
1584
Comment
CHSC91380
Carex praegracilis
Lowell Ahart; John Dittes
2005-6-1
11879
Lassen
Near springs on a small hill, 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
UC1583985
Carex praegracilis
G. Schoolcraft
1990-6-12
2087
Lassen
about 17 mi e Ravendale; Pine Dunes RNA
1706
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
HSC103634
Carex scopulorum var. bracteosa
Thomas W. Nelson, Jane Nelson
1985-8-10
8028
Lassen
Silver Lake, along north side of arm on east side of lake.
1829
Comment
CHSC74311
Carex simulata
James D. Jokerst
1991-5-28
3296
Lassen
Survey for reroute of Hwy. 139 at the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. Modoc Plateau.
1554
Comment
CHSC96453
Carex simulata
Gordon Leppig; J. Cromwell
1997-7-27
619
Lassen
Modoc National Forest. Blue Lake Ranch.
1970
Comment
HSC95325
Carex simulata
Gordon Leppig, Tony LaBanca, L. Arguello
1997-6-28
509
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
HSC97395
Carex straminiformis
L. P. Janeway
2003-7-24
7917
Lassen
High Cascade Range, along FS 30N14, 1.1 km from FS 30N21, upper Susan River, 4.7 mi. W of Clover Valley
1932
Comment
SEINET13715331
Carex straminiformis
G. Schoolcraft
1997-8-6
2669
Lassen
Diamond Mountain, N slope
2317
Comment
CAS-BOT-BC116621
Carex subfusca
Leo David Whitney
1934-8-2
1971
Lassen
Moist stream bank, Bridge Creek Camp.
1737
Comment
CAS-BOT-BC116624
Carex subfusca
John Thomas Howell
1973-7-10
49779
Lassen
Fredonyer Pass.
1737
Comment
CAS-BOT-BC116612
Carex subfusca
Hans Leschke
1957-9-21
1528
Lassen
Trail Butte Lake-Cinder Cove at cold spring.
1859
Comment
CAS-BOT-BC116613
Carex subfusca
Hans Leschke
1958-8-17
1568
Lassen
Reflexion Lake
1792
Comment
JEPS103197
Carex vallicola
B. Corbin
2001-5-30
1002
Lassen
S of Harter Flat, along jeep road 1 mi S of Nelson Corral Res.
1868
Comment
CAS-BOT-BC114881
Carex whitneyi
John Thomas Howell
1959-9-23
s.n.
Lassen
North end of Juniper Lake, Lassen Park.
2057
Comment
HSC48179
Carex whitneyi
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19241
Lassen
2 mi. N of Westwood
Comment
RSA275376
Carex whitneyi
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19241
Lassen
About 2 miles north of Westwood.
Comment
RSA517387
Carex whitneyi
Leland S. Smith
1922-7-23
75
Lassen
Lassen National Forest.
Comment
CAS-BOT-BC114884
Carex whitneyi
Hans Leschke
1958-8-15
s.n.
Lassen
Trail Butte-to Snag Lake near Lava beds.
1920
Comment
CAS-BOT-BC248970
Castilleja
Philip A. Munz
1947-5-19
11866
Lassen
27.7 miles south of Ravendale, on Highway 395
1310
Comment
CHSC106687
Castilleja angustifolia
Zachary Garcia
2008-5-3
Lassen
Fort Sage Mtns. OHV Trailhead and trail to Indian Springs.
1439
Comment
CHSC93559
Castilleja angustifolia
Lowell Ahart; John Dittes
2005-6-2
11978
Lassen
Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the interesection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction.
Comment Read comments Oct 20 2009
UC585181
Castilleja angustifolia
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1759
Lassen
e of Red Rock (nw side of summit of ridge)
1828
Comment
HSC20562
Castilleja angustifolia
M. L. Stuart
1965-5-2
56
Lassen
2 mi. N of Termo. on Hwy. 395
1829
Comment
UC1483848
Castilleja applegatei
G. Schoolcraft
1979-7-5
123
Lassen
se of Observation Mountain Lookout (top of Observation Mountain); Observation Mountain
2407
Comment
CHSC30598
Castilleja applegatei subsp. pinetorum
Marc Held
1972-6-29
19
Lassen
3 miles from Dean's Meadow, towards 5 points, off road side.
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
UC1063040
Castilleja applegatei subsp. pinetorum
H. P. Hagge
1929-9-12
25
Lassen
Logan Mtn.; Eagle Lake Quad.
1828
Comment
UC1184064
Castilleja applegatei subsp. pinetorum
Jean Langenheim
1957-6-26
4394
Lassen
nw Said Valley Said Valley (e Lassen County)
Comment
UC1374836
Castilleja applegatei subsp. pinetorum
Noel H. Holmgren, John J. Fay, and Barton L. Bethers
1970-6-24
4372
Lassen
2 mi w Westwood (at edge of airstrip)
1554
Comment
UC1924581
Castilleja applegatei subsp. pinetorum
Debra Valov
2006-5-28
2006010
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1291
Comment
CAS-BOT-BC249620
Castilleja applegatei subsp. pinetorum
F. Farris
1935-5-15
s.n.
Lassen
Ramsey ranch near Susanville
Comment
UC1609116
Castilleja arachnoidea
Vernon Oswald and Lowell Ahart
1993-6-14
5525
Lassen
2.0 mi ene Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd (Lassen A1), at Sandy Beach, on the w shore of Eagle Lake, on the upper beach between the road and the lake); Eagle Lake
1566
Comment
UC725999
Castilleja campestris subsp. campestris
A. A. Heller
1938-6-23
15218
Lassen
between Termo and Madeline (along U.S. Hwy 395)
1615
Comment
SEINET3159144
Castilleja chromosa
J. L. Strother
1970-5-23
954
Lassen
about 6 mi N of Honey Lake
1280
Comment
UC1924577
Castilleja lacera
Debra Valov
2006-5-29
2006028
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1285
Comment
CAS-BOT-BC226034
Castilleja lacera
Ella D. Cantelow
1940-5-31
4439
Lassen
E of McArthur
Comment
JEPS74942
Castilleja lemmonii
T. I. Chuang and F. M. Chuang
1975-7-23
7555
Lassen
just w Westwood
Comment
OBI75870
Castilleja lemmonii
Anthony Baniaga
2011-8-10
495
Lassen
Lassen Natl Forest. Barnes Flat. Swain Mtn quad. T30N R8E sec 9 SE of SE
1769
Comment
JEPS76163
Castilleja linariifolia
T. I. Chuang with Fei-Mei Chuang
1977-7-25
7660
Lassen
10 mi w Madeline
Comment
CAS-BOT-BC241000
Castilleja pilosa
Michael A. Vincent
1999-6-9
8584
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
CAS-BOT-BC241005
Castilleja pilosa
Margaret Williams; Lyn Wise
1976-5-31
76- 22 -1
Lassen
Near Nervine Aero Service, E of Beckwourth
1524
Comment
CHSC12962
Castilleja pilosa
K. R. Stern
1974-6-26
5871
Lassen
Open sagebrush scrub adjacent to Pine Creek, 3.7 mi n of intersection between County Rd. A-21 to Westwood and Hwy. 44, on e side of Hwy. 44.
Comment
JEPS86248
Castilleja pilosa
L. R. Heckard and T. I. Chuang
1981-6-10
5529
Lassen
about 0.5 mi e Nubieber
1249
Comment
RSA0047057
Castilleja pilosa
L. P. Janeway
2004-6-26
8151
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
HSC103924
Castilleja tenuis
L. Ahart, John Dittes
2008-6-22
15027
Lassen
Big Valley; ~5 mi. (air) NE of Bieber, and ~2.1 mi. (air) NE of the Headquarters at Ash Creek State Wildlife Area
1263
Comment
JEPS121270
Castilleja tenuis
Lowell Ahart
2013-7-22
18840
Lassen
W margin of duck field, about 30 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
JEPS79149
Castilleja tenuis
L. R. Heckard with R. Bacigalupi
1980-6-12
5252
Lassen
about 4.5 mi e Westwood Junction (along Highway 36)
1615
Comment
JEPS96025
Castilleja tenuis
Vernon H. Oswald and Lowell Ahart
1996-6-24
7841
Lassen
2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows
1633
Comment
UC1143036
Castilleja tenuis
L. R. Short and Wm. Gansberg
1936-6-8
S- 394
Lassen
Burgess Spring Experimental Range; Lassen National Forest
1743
Comment
UC1567425
Castilleja tenuis
G. Schoolcraft
1989-6-12
1913
Lassen
Ash Valley RNA/ACEC Ash Valley
1554
Comment
UC27210
Castilleja tenuis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3369
Lassen
Adobe meadows; Honey Lake Valley
Comment
UC717969
Castilleja tenuis
David D. Keck
1944-6-8
5444
Lassen
2 mi e Westwood (near Mountain Meadows Reservoir)
1524
Comment
JEPS103212
Castilleja tenuis
G. Schoolcraft
1993-6-29
2314
Lassen
Ash Valley RNA 16 miles east of Adin, CA
1554
Comment
NY608460
Caulanthus major var. nevadensis
N. H. Holmgren
1978-6-11
8923
Lassen
Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance.
1740
Comment
UC1477727
Caulanthus major var. nevadensis
Teresa Prendusi
1980-7-21
30
Lassen
Fredonyer Peak
2377
Comment
CHSC5069
Ceanothus prostratus
D. L. Stites
1967-7-1
111
Lassen
On Black Mt. 5 mi s of Eagle Lake Biology Station.
1828
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
UC1736108
Ceanothus prostratus var. prostratus
Dean W. Taylor
1974-7-13
4067
Lassen
Lassen National Forest, Thousand Lakes Wilderness, vicinity of Magee Pk, T33N R3E SE1/4 Sect. 27
2484
Comment
CHSC23565
Ceanothus velutinus
W. O. Baum
1971-6-28
46
Lassen
E slope of Gallatin Peak.
1950
Comment
CAS-BOT-BC52436
Ceanothus velutinus var. velutinus
M. S. Jussel
1931-9-6
s.n.
Lassen
On the road to Mt. Lassen, five miles from Westwood
1828
Comment
CAS-BOT-BC106028
Centaurea virgata subsp. squarrosa
Loring White
1950-8-9
12
Lassen
Roadside and fields Cramer Ranch, Big Valley
Comment
JEPS121264
Centaurea virgata subsp. squarrosa
Lowell Ahart, John Dittes
2013-7-23
18910
Lassen
Near the summit on the N side of Hwy 299, at entrance road to quarry site, Big Valley Mountain, just E of Big Valley Summit, 2.8 air miles SW of Nubieber.
Comment
UC1533151
Centaurea virgata subsp. squarrosa
G. Schoolcraft
1986-7-28
1666
Lassen
about 3.5 mi SW of Nubieber (along Hwy 299)
1402
Comment
CAS-BOT-BC106029
Centaurea virgata subsp. squarrosa
T. C. Fuller
1966-7-20
14961
Lassen
On both sides of the road from 0.1 to 0.9 mi. s. of the bridge at Pittville
Comment
RSA186838
Centaurea virgata subsp. squarrosa
T. C. Fuller
1966-7-20
14961
Lassen
Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville
Comment
SEINET13331057
Centaurea virgata subsp. squarrosa
T. C. Fuller
unknown
s.n.
Lassen
Big Valley
Comment
CHSC99981
Centromadia pungens subsp. pungens
L. P. Janeway
2008-8-2
9523
Lassen
Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane.
1222
Comment
JEPS114633
Cerastium glomeratum
Lowell Ahart, John Dittes
2008-6-20
14966
Lassen
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 7.0 miles (air) northeast of Bieber
1263
Comment
UC8815
Ceratophyllum demersum
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3324
Lassen
Honey Lake Valley; near DeWitt's
1219
Comment
UC956834
Ceratophyllum demersum
Herbert L. Mason and Verne Grant
1947-7-9
13295
Lassen
irrigation ditch 5 mi e Bieber
Comment
CDA25720
Cercocarpus ledifolius
T. C. Fuller
1963-7-15
10899
Lassen
Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin.
0
Comment
CHSC68761
Cercocarpus ledifolius var. intermontanus
Vernon Oswald; Lowell Ahart
1997-5-27
8513
Lassen
North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 1.4 mi east of Hwy. 139.
1645
Comment
CHSC42210
Cercocarpus ledifolius var. ledifolius
C. E. Iaver
1985-7-20
Lassen
Ca. 8 mi se of Hayden Hill and 1 mi nw of Said Valley Reservoir.
1584
Comment
CHSC80142
Chaenactis douglasii
Jeanne Boze
1981-6-11
102
Lassen
Along roadside, 5.5 mi from Hwy 139 on Horse Lake Road.
1676
Comment
RSA637572
Chaenactis douglasii
Michael A. Vincent
1999-6-9
8582
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
CHSC13859
Chaenactis douglasii var. douglasii
George Ellmore
1973-6-25
731
Lassen
West Eagle Lake on Pelican Point.
1560
Comment
RSA30268
Chaenactis xantiana
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
UC31043
Chaenactis xantiana
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3411
Lassen
Amedee Honey Lake Valley
Comment
CAS-BOT-BC279643
Chaenactis xantiana
H. D. Ripley; R. C. Barneby
1943-6-15
5754
Lassen
N.-E. of Litchfield
1234
Comment
CHSC36474
Chamaesaracha nana
Jeffrey R. Peek
1982-6-4
35
Lassen
Jct of rd e of Murrers Upper Meadow and road going to Dry Lakes.
Comment
CHSC5919
Chamaesaracha nana
M. West
1946-6-18
Lassen
Spalding's, Eagle Lake.
1554
Comment
UC1523765
Chamaesaracha nana
Gary Schoolcraft
1981-7-1
493
Lassen
e slopes Roop Mountain
2133
Comment
UC1542162
Chamaesaracha nana
Paul Covel
1986-6-6
Lassen
e of Chester (Lake Almanor dike); Lake Almanor
Comment
CHSC31977
Chamaesyce serpillifolia subsp. serpillifolia
L. Ahart; J. T. Howell
1974-7-9
532
Lassen
Along edge of rd, 4 mi w of Susanville.
1584
Comment
SJSU10817
Chamaesyce serpyllifolia
C. L. Kline
1965-7-12
190
Lassen
8.3 mi NE of Susanville by Hwy 139
1036
Comment
CHSC6188
Chamerion angustifolium subsp. circumvagum
P. Balch
1955-7-23
Lassen
Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville.
Comment
CAS-BOT-BC426342
Chenopodium
John Thomas Howell
1975-7-23
51389
Lassen
Susanville, south edge of town on highway to Janesville
1295
Comment
JEPS95909
Chenopodium album
Lowell Ahart
1999-9-13
8222
Lassen
about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish
1210
Comment
POM312487
Chenopodium berlandieri var. zschackei
Irving Schneider
1947-8-1
8229
Lassen
Irrigation ditch running SW into State Fish and Game nesting area on west end of Section 19, Madeline Plain.
Comment
UC1745664
Chenopodium chenopodioides
Annetta M. Carter
1945-9-30
1726
Lassen
Sam Webb place near end of Eagle Lake.
1554
Comment
UCD54572
Chenopodium glaucum
Ellen Dean; Dawn Cunningham
2005-10-25
2755
Lassen
E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond.
1248
Comment
CHSC25311
Chenopodium leptophyllum
Pauleen Broyles
1977-6-14
158
Lassen
Skedaddle Ranch Road at South Fork Reservoir turn-off, ca 8 km ne of Herlong.
1660
Comment
CDA23382
Chenopodium leptophyllum
M. K. Bellue
1938-8-1
Lassen
Butte Lake.
0
Comment
CAS-BOT-BC260781
Chenopodium rubrum var. humile
Malcom A. Nobs; S. Galen Smith
1949-7-22
1071
Lassen
Northeast shore of Eagle Lake
Comment
CAS-BOT-BC451356
Chimaphila menziesii
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain: Susanville. Perkin's Ranch
2133
Comment
CAS-BOT-BC451355
Chimaphila menziesii
Clare B. Hardham
1971-8-22
18388
Lassen
Diamond Mountain: North slopes
2133
Comment
CAS-BOT-BC247864
Chorizanthe watsonii
John Thomas Howell
1934-6-10
11854
Lassen
4 miles south of Omira
Comment
JEPS57772
Chorizanthe watsonii
W. L. Jepson
1918-8-2
7766
Lassen
Beckwith Pass
1463
Comment
RSA79230
Chrysothamnus nauseosus subsp. albicaulis
E. K. Balls, Percy C. Everett
1952-10-10
18135
Lassen
4 miles east of Susan River Bridge, Hwy. 36
1372
Comment
SJSU3013
Chrysothamnus viscidiflorus
J. W. Tilden
1967-8-23
1772
Lassen
Litchfield, southeastern Lassen County
1402
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
UC761845
Chrysothamnus viscidiflorus subsp. viscidiflorus
R. F. Hoover
1940-10-5
4664
Lassen
Wendel
Comment
JEPS103168
Chylismia claviformis subsp. cruciformis
Beth Corbin
2002-5-1
1065
Lassen
Honey Lake Valley, about 2 mi SE of Wendel.
1234
Comment
JEPS29747
Chylismia claviformis subsp. cruciformis
Rimo Bacigalupi, and L. R. Heckard
1962-5-28
8502
Lassen
2 mi e Wendel junction (on road past Flanagan to Pyramid Lake, Nevada, in low areas n of Honey Lake)
1219
Comment
CDA38206
Cicuta douglasii
T. C. Fuller
1965-8-26
14041
Lassen
North side of old highway to Johnstonville, 5 miles east of Susanville.
0
Comment
UC1035883
Cirsium andersonii
Annie M. Alexander and Louise Kellogg
1946-8-13
5156
Lassen
w side of Eagle Lake Eagle Lake
Comment
SD61012
Cirsium andersonii
Darley F. Howe
1964-8-1
3911
Lassen
3.3 miles on ridge road above Harvey Creek, Warner Mountains; Modoc National Forest.
1950
Comment
UCD159575
Cirsium arvense
D. S. Park
2011-6-27
311 -2
Lassen
East of Westwood. Growing near Willard Creek.
Comment
CDA1124
Cirsium canescens
T. C. Fuller
1966-7-22
14981
Lassen
Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains .
Comment
CDA1128
Cirsium canescens
G. D. Barbe
1982-7-13
3881
Lassen
Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd.
0
Comment
CAS-BOT-BC278012
Cirsium cymosum
Peter H. Raven; Otto T. Solbrig
1958-6-17
13303
Lassen
8.0 miles north of Madeline along United States Highway 395
Comment
CDA1172
Cirsium cymosum
T. C. Fuller
1963-7-16
10921 -C
Lassen
West of Hwy 395; 14.3 miles south of Ravendale.
0
Comment
CDA1174
Cirsium cymosum
G. D. Barbe
1982-7-13
3882
Lassen
Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd.
0
Comment
SD113205
Cirsium cymosum
Darley F. Howe
1964-7-31
3947
Lassen
Near east bank of Blue Lake, Warner Mountains, Modoc National Forest.
1890
Comment
JEPS30797
Cirsium cymosum var. cymosum
Peter H. Raven and Otto T. Solbrig
1958-6-17
13303
Lassen
along US Hwy 395 8.0 mi n Madeline
Comment
CAS-BOT-BC280058
Cirsium neomexicanum
T. C. Fuller
1980-8-5
20312
Lassen
0.4 km. east of the campground, east shore of Dodge Reservoir, 28 km. (17.5 mi.) northeast of Ravendale
Comment
SEINET3082769
Cirsium occidentale var. candidissimum
N. H. Holmgren, John J. Fay & Barton L. Bethers
1970-6-25
4377
Lassen
North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction).
1524
Comment
CDA1526
Cirsium ochrocentrum
T. C. Fuller
1966-7-22
14980
Lassen
Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains .
Comment
CAS-BOT-BC286311
Cirsium scariosum
B. Bartholomew; B. Anderson
1988-6-25
4370
Lassen
Long Valley, southern end of the Warner Mountains
2080
Comment
UC1037273
Cirsium scariosum var. americanum
Leo Whitney
1934-7-8
1765
Lassen
meadow near Harvey Spring (ca. 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley
1737
Comment
CDA1560
Cirsium scariosum var. americanum
T. C. Fuller
1959-7-6
2979 -A
Lassen
Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5)
0
Comment
CAS-BOT-BC286515
Cirsium undulatum
T. C. Fuller
1965-10-13
14201
Lassen
E. of rd. at the e. base of Dry Valley Ridge, Madelaine Plains, 3 mi. n. of paved road, 10 mi. w. of Termo
Comment
CAS-BOT-BC162636
Clarkia
John Thomas Howell
1974-7-30
s.n.
Lassen
Diamond Mountain - Sierra Nevada
2286
Comment
LA202501
Clarkia gracilis subsp. gracilis
Brian Le Neve;
1996-7-4
84
Lassen
between Lake Almanor and Susanville on State Highway 36
Comment
CHSC4876
Clarkia lassenensis
R. Carter
1967-6-23
546
Lassen
Growing 10 yds. off S side of road.
Comment
NY999400
Clarkia lassenensis
N. H. Holmgren
1980-7-4
9517
Lassen
Observation Peak, south slope of mountain, 18 km (11 mi) airline distance east of Ravendale
1890
Comment
UC1924236
Clarkia lassenensis
Debra Valov
2004-6-9
2004256
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1270
Comment
UC930759
Clarkia lassenensis
C. L. Hitchcock
1940-5-26
6610
Lassen
ca. 12 mi n Fall River Mills; Fall River
1371
Comment
UCD55291
Clarkia lassenensis
Ellen Dean; Gary Schoolcraft
2006-5-16
3112
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.
1274
Comment
CAS-BOT-BC163410
Clarkia purpurea subsp. quadrivulnera
H. D. Ripley; R. C. Barneby
1943-6-13
5718
Lassen
South of Johnstonville
1325
Comment
CHSC6185
Clarkia purpurea subsp. viminea
1944-7-1
Lassen
Eagle Lake.
1584
Comment
RSA122142
Clarkia rhomboidea
L. R. Short, Wm. Gansberg
1936-7-3
S- 358
Lassen
MDM. Burgess Spr. Exp. Range. Lassen National Forest
1848
Comment
UC773908
Clarkia rhomboidea
L. R. Short and Wm. Gansberg
1936-7-3
S- 358
Lassen
Burgess Spring Experiment Range Lassen Forest
1847
Comment
JEPS94123
Claytonia rubra subsp. depressa
Vernon H. Oswald and Lowell Ahart
1998-5-22
9124
Lassen
ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts.
1463
Comment
CHSC108022
Claytonia rubra subsp. rubra
Lowell Ahart; John Dittes
2011-6-20
17486
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
CHSC117188
Claytonia rubra subsp. rubra
Lowell Ahart; John Dittes
2016-6-7
21012
Lassen
5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber.
1397
Comment
JEPS126532
Claytonia rubra subsp. rubra
Lowell Ahart, John Dittes
2016-6-7
21012
Lassen
5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber.
Comment
CHSC5225
Cleome platycarpa
J. B. Kimsey
1946-6-17
Lassen
Eagle Lake. Horse Lake.
1554
Comment
NY222755
Cleome platycarpa
H. D. D. Ripley
1943-6-15
5757
Lassen
Near Viewland.
1310.6
Comment
SEINET11986415
Cleome platycarpa
N. H. Holmgren, Holmgrn, P. K.
1978-1
8928
Lassen
Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi.) NE of Rye Patch Canyon summit,
1700
Comment
NY242101
Cleomella hillmanii
G. Schoolcraft
1989-5-31
1883
Lassen
3 mi. N. Wendel Rd. along Skedaddle Ranch Rd.
1463.0
Comment
UC1567444
Cleomella hillmanii
G. Schoolcraft
1989-5-31
1883
Lassen
3 mi n Wendel Rd. (along Skedaddle Ranch Rd)
1463
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
JEPS42688
Cleomella parviflora
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3352
Lassen
Amedee Honey Lake Vally
Comment
RSA93741B
Cleomella plocasperma
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1220
Comment
SBBG66408
Collinsia childii
E. Rockwell
-Jun-1925
1023
Lassen
Eagle Lake
1554
Comment
CHSC36452
Collinsia greenei
Susan H. Euing
1982-6-6
6
Lassen
Pine Creek below fish trap. Flood plain-dry lake bed area.
Comment Read comments Jun 18 2018
CHSC112413
Collinsia parviflora
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18737
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
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
CHSC64809
Collinsia parviflora
Vernon H. Oswald
1995-5-31
6811
Lassen
Modoc Plateau. Smoke Creek Ranch Rd. 1.7 mi e of Hwy. 395, between Litchfield and Ravendale.
1353
Comment
CHSC68769
Collinsia parviflora
Vernon H. Oswald; Lowell Ahart
1997-5-27
8500
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
JEPS107462
Collinsia parviflora
Lowell Ahart, John Dittes
2005-6-1
11858
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
SEINET10315318
Collinsia parviflora
Jeffrey Huber
1971-6-2
127
Lassen
Approximately 30 miles north of Susanville, on California Hwy 139
1646
Comment
UC1032574
Collinsia parviflora
K. Bradshaw
1939-5-27
229
Lassen
Lassen National Forest, s end of Black Mountain Experimental Forest Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest
1752
Comment
UC1137686
Collinsia parviflora
L. R. Short
1936-5-7
S 344
Lassen
Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range
1737
Comment
UCD55268
Collinsia parviflora
Ellen Dean
2006-5-15
3066
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.
1249
Comment
HSC63776
Collinsia parviflora
Teresa Prendusi
1980-4-30
Lassen
Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale
1616
Comment
RSA152668
Collinsia parviflora
I. L. Wiggins, Dorothy Wiggins
1961-6-10
16322
Lassen
Along California Highway 36 abut 6 miles W of Sussanville.
Comment
RSA60368
Collinsia parviflora
E. K. Balls
1950-5-9
15951
Lassen
6 miles south of Milford, Hwy 395.
1296
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
UC2016544
Collinsia parviflora
Richard Olmstead
1984-6-26
578
Lassen
3.5 miles east of junction of Forest Service Road and Red Rock Lookout Road (28N02), on Red Rock Lookout Road. Near small stream lined with alders.
Comment
UC2016541
Collinsia torreyi
Richard Olmstead
1984-6-26
577
Lassen
2.5 miles east of junction of Forest Service Road and Red Rock Lookout Road (28N02).
Comment
CHSC4440
Collomia grandiflora
K. R. Stern
1967-6-30
2450
Lassen
West central side of Eagle Lake.
1554
Comment
CHSC4860
Collomia grandiflora
R. Carter
1967-7-13
585
Lassen
On s side of rd. On the rd to Eagle Lake Biology Station and Willow Creek.
1584
Comment
CHSC7767
Collomia grandiflora
Beverley J. Wise
1969-6-1
75
Lassen
N.E. city limits of Susanville, on Chestnut, at intersection with Hwy 139.
1310
Comment
POM146293
Collomia grandiflora
J. B. Feudge
1740
Lassen
Bank of Susan River. Susanville
Comment
UCD18964
Collomia grandiflora
R. E. Francis
1965-7-7
6
Lassen
Lassen National Forest, Harvey Valley Allotment.
1737
Comment
UC1981729
Collomia linearis
Debra Valov
2010-7-17
2010102
Lassen
Bieber, Lassen Co., CA;; off County Rs A2 c. 8.7 km east of Hwy 299.
Comment
UC23683
Collomia linearis
M. S. Baker and Frank Nutting
1894-7-12
Lassen
Pine Creek
Comment
CHSC92760
Collomia tinctoria
L. P. Janeway
2005-7-4
8468
Lassen
High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41.
1752
Comment
CDA3699
Conringia orientalis
E. E. Fix
1961-6-1
Lassen
E. Williams ranch, Termo.
0
Comment
CAS-BOT-BC286112
Conyza canadensis
John Thomas Howell; Gordon H. True
1973-8-1
50154
Lassen
Gold Run Creek road south of Susanville, Diamond Range
1584
Comment
CAS-BOT-BC286113
Conyza canadensis
John Thomas Howell
1974-7-10
50532
Lassen
Elysian Valley
1325
Comment
POM33286
Conyza canadensis
Marcus E. Jones
1897-6-23
s.n.
Lassen
Amedee.
1220
Comment
POM107536
Corallorhiza maculata
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkins Ranch.
1829
Comment
POM107535
Corallorhiza striata
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkins Ranch.
1829
Comment
CHSC21233
Crepis acuminata
Robert A. Schlising
1974-6-25
3148
Lassen
East side of Eagle Lake, just south of Eagle Lake Field Station. Near Bly Tunnel.
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
CHSC60813
Crepis bakeri
Vernon H. Oswald; Lowell Ahart
1993-6-28
5614
Lassen
N of Hwy 44 on Rd. 33N06, on the flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In woods bordering the road. A drying vernal pool is located in a forest opening nearby.
1798
Comment
CAS-BOT-BC291547
Crepis intermedia
Margaret Williams
1974-8-4
74 -L-76
Lassen
Near Hallelujah Junction west of Hwy 395 and south of Hwy 70, Sierra Nevada
1493
Comment
UC1136843
Crepis occidentalis
L. R. Short and W. Gansberg
S- 361
Lassen
Burgess Spr. Exp. Range Lassen <National> Forest
1871
Comment
UC581195
Crepis occidentalis
E. B. Babcock and G. L. Stebbins Jr.
1936-6-7
1749
Lassen
nw facing slope of ridge e Red Rock
1600
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
UC581314
Crepis occidentalis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2318
Lassen
sw-facing slope about 1 mi below summit; Black Mountain
1940
Comment
CAS-BOT-BC376489
Crepis occidentalis subsp. conjuncta
G. L. Stebbins, Jr.; J. A. Jenkins
1937-7-10
2319
Lassen
Black Mountain about a mile below the summit
1940
Comment
HSC81647
Crepis occidentalis subsp. pumila
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6031
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
CDA4444
Crepis occidentalis subsp. pumila
T. C. Fuller
1963-6-1
10619
Lassen
West side of road to Susanville, 2.0 mi. south of Pittville.
0
Comment
CDA1925
Crypsis schoenoides
Lee Wheeler
1963-9-17
Lassen
State Fish & Game
0
Comment
HSC63831
Crypsis vaginiflora
Teresa Prendusi
1980-8-27
Lassen
Reservoir just NE of Susanville
1280
Comment
UC767881
Crypsis vaginiflora
R. F. Hoover
1940-10-10
4680
Lassen
Johnstonville
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
CHSC57350
Cryptantha
K. R. Stern
1974-6-26
5860
Lassen
Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, ca. 1.8 mi nw of intersection with Hwy. 44.
Comment
UC1951064
Cryptantha
Debra Valov
2007-5-22
2007076
Lassen
Bieber, ca. 12 km east of Hwy 299 via County Rd A2.
Comment
JEPS94987
Cryptantha ambigua
Vernon Oswald and Lowell Ahart
1997-6-24
8593
Lassen
s of Susanville (1.2 mi e of Gold Run Road (29N10), on n side of Diamond Mountain on Forest Road 29N43); Diamond Mountain, Forest Road 29N43
1685
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
CHSC93236
Cryptantha circumscissa
John Dittes; Scott Chamberlain
2004-6-28
1010
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
JEPS107310
Cryptantha circumscissa
Lowell Ahart, John Dittes
2005-6-1
11890
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
SJSU11363
Cryptantha glomeriflora
J. W. Tilden
1960-6-27
1494
Lassen
Westwood
1524
Comment
NY1111960
Cryptantha gracilis
G. Schoolcraft
1984-6-4
1193
Lassen
Wendel Canyon
1524
Comment
GMDRC6449
Cryptantha humilis
J. M. Andre, Glenn Clifton
1993-6-14
30004
Lassen
northeast base of Shaffer Mtn near Secret Creek, about 20 miles ENE of Susanville
1646
Comment
UC78722
Cryptantha intermedia
T. S. Brandegee
1892-6-26
Lassen
Milford
Comment
SDSU20598
Cryptantha intermedia var. hendersonii
Ronald B. Kelley
2005-6-30
897
Lassen
Western end of Skedaddle Mountains along BLM road from Wendel to Smoky Ranch Rd., 5.1 miles north of paved road junction, north of Wendel.
1538
Comment
CDA40508
Cryptantha muricata
Gary Schoolcraft
2000-6-19
2903
Lassen
West of Cold Spring Velley.
Comment
JEPS94832
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
UC78602
Cryptantha pterocarya
T. S. Brandegee
1892-6-22
Lassen
Honey Lake
Comment
CHSC106073
Cryptantha torreyana
Lowell Ahart; John Dittes
2010-7-31
17028
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
UC1037249
Cryptantha torreyana
Leo Whitney
1934-7-5
1787
Lassen
ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley
1737
Comment
HSC68930
Cryptantha watsonii
Gary Schoolcraft
1980-5-7
219
Lassen
On Honey Lake Island
1220
Comment
UCD126237
Cuscuta approximata
Lee Smith
1975-9-4
s.n.
Lassen
Al Blickenstaff Farm, near Honey Lake, 3 miles south of Janesville.
Comment
SEINET7897188
Cuscuta californica var. californica
B. L. Wilson, D. Lytjen, N. Otting
2005-7-25
11445
Lassen
Along Highway 395 at Mud Flat, north of Susanville
1347
Comment
CAS-BOT-BC70565
Cystopteris fragilis
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-11
16356
Lassen
near NE end of Eagle lake
Comment
CHSC59574
Damasonium californicum
Mary Meyer
1980-6-1
559
Lassen
Along creek off Champs Flat Road.
1677
Comment
RSA8224
Damasonium californicum
Elmer I. Applegate
1929-6-24
5882
Lassen
Near Bieber.
Comment
UC1130605
Damasonium californicum
Robert W. Gardner
1937-6-26
G- 25
Lassen
Poison Lake Halls Flat Quad., Poison Lake
Comment
CAS-BOT-BC445520
Damasonium californicum
Clarence R. Quick
1962-6-17
62 23 A
Lassen
Swains Hole, south of Blacks Mountain Experimental Station
1554
Comment
RSA323646
Damasonium californicum
A. 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.
1699
Comment
SEINET3828852
Damasonium californicum
R. F. Thorne, Larry E. De Buhr
1975-1
46995
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 iles south of Modoc county line.
1615
Comment
JEPS88511
Danthonia californica var. americana
Vernon H. Oswald and Lowell Ahart
1996-6-24
7839
Lassen
Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1),on w side of meadow just s of cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows
1633
Comment
HSC69064
Danthonia unispicata
Gary Schoolcraft
1980-7-28
332
Lassen
Meadow E of Tule Mountain.
2043
Comment
UCD61347
Danthonia unispicata
L. Whitney
1935-6-24
Lassen
Squaw Valley.
Comment
CAS-BOT-BC291777
Deinandra lobbii
John Thomas Howell
1934-7-3
12380
Lassen
Big Valley near Bieber
Comment
SD51285
Deinandra lobbii
Darley F. Howe
1961-8-4
3135
Lassen
11.5 miles east of McArthur on U. S. Highway 299.
Comment
JEPS79214
Delphinium
L. R. Heckard with R. C. Bacigalupi
1980-6-12
5254
Lassen
ne Westwood (near golf course)
1554
Comment
CHSC4983
Delphinium andersonii
R. Clicquennoi
1967-6-24
38
Lassen
Meadow. 4 mi e of Eagle Lake Biology Station at Murrer's Upper Meadow.
1524
Comment
UCD55273
Delphinium andersonii
Ellen Dean
2006-5-15
3083
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. Northern part of Johnston property near sandy wash.
1249
Comment
UC726247
Delphinium armeniacum
A. A. Heller
1938-6-4
15149
Lassen
1 mile east of Fredonyer Pass east of Westwood.
1706
Comment
UC1609175
Delphinium depauperatum
Vernon H. Oswald and Lowell Ahart
1993-6-28
5601
Lassen
Rd. 35NO4 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley
1725
Comment
HSC79826
Delphinium depauperatum
William Rothstrom
1975-6-9
Lassen
Near Day, 1.0 mi. E of large cinder pit mine
1280
Comment
UC726275
Delphinium nudicaule
A. A. Heller
1940-5-22
15663
Lassen
hill back of Westwood Cemetery (station several mi w of type station)
Comment
CAS-BOT-BC9944
Delphinium nudicaule
Mrs. H. C. Cantelow
1949-6-11
8
Lassen
East slope of Fredonyer Pass
Comment
CHSC7732
Delphinium nuttallianum
Beverley J. Wise
1969-5-9
85
Lassen
11.7 mi. west of Susanville on Forest Serv. 8246 off Hwy. 36.
1524
Comment
UCD61119
Deschampsia cespitosa
A. L. Hormay
1941-6-23
13
Lassen
Lassen National Forest. Burgess Spring.
1676
Comment
CDA31657
Deschampsia cespitosa subsp. cespitosa
Gordon Leppig, T. LaBanca
1997-6-28
511
Lassen
Modoc National Forest, Blue Lake Ranch, peatland in large meadow complex.
Comment
RSA126933
Deschampsia cespitosa subsp. cespitosa
G. A. Fischer, I. H. Johnson
1933-7-14
F- 244
Lassen
Patterson Flat
1738
Comment
UC1037093
Deschampsia cespitosa subsp. cespitosa
Leo Whitney
1934-7-15
2211
Lassen
ca. 15 mi. w. Eagle lake (Crater Lake, Lassen Nat'l Forest); Lassen Nat'l Forest, Crater Lake
2133
Comment
CAS-BOT-BC192741
Deschampsia danthonioides
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49499
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC192744
Deschampsia danthonioides
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-10
16328
Lassen
Along southern shore of Eagle Lake
Comment
UCD61873
Deschampsia danthonioides
A. A. Beetle
1941-6-28
2816
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak.
Comment
UCD62514
Deschampsia danthonioides
L. Whitney
1935-6-20
3251
Lassen
Camp 10, Fruit Grower's Supply Company, Lassen National Forest.
Comment
RSA268159
Deschampsia danthonioides
J. R. Reeder, C. G. Reeder
1972-6-1
5630
Lassen
2 miles S. of Nubieber.
1037
Comment
JEPS28056
Deschampsia elongata
George W. Gillett
1957-7-28
925
Lassen
trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake (dry wash 100 yds. above trail junction); Lassen Volcanic Nat'l Park
1859
Comment
UC38006
Deschampsia elongata
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3317
Lassen
Honey Lake Valley
Comment
CAS-BOT-BC43089
Descurainia nelsonii
John Thomas Howell
1934-7-7
12476
Lassen
Harvey Valley.
Comment
CDA42999
Descurainia nelsonii
L. Ahart, John Dittes
2008-6-19
14891
Lassen
West bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber.
Comment
UC402624
Descurainia nelsonii
Franklin P. Nutting
Lassen
Dixey Mts.
Comment
CHSC25061
Descurainia pinnata
L. B. Barlow
1967-6-23
7
Lassen
Vic. Eagle Lake Biological Station, east central side of Eagle Lake.
1554
Comment
UC1143030
Descurainia pinnata
L. R. Short and W. McNulty
1936-6-15
S- 435
Lassen
Burgess Spring Experimental Range; Lassen National Forest
1833
Comment
CAS-BOT-BC43485
Descurainia sophia
Al Simontacchi
1940-6-8
828
Lassen
Lassen Forest. Halls Flat Ranger Station.
1706
Comment
CAS-BOT-BC43486
Descurainia sophia
James Jokerst
1983-5-31
1790
Lassen
Near Madeline Plains.
1583
Comment
CHSC504
Descurainia sophia
J. Wakeman
1963-5-11
Lassen
Six mi. east of Bieber on Hiway 89.
Comment
CHSC61163
Dicentra uniflora
Vernon H. Oswald; Lowell Ahart
1993-5-12
5374
Lassen
SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in forest.
1737
Comment
CHSC7664
Dichelostemma multiflorum
Beverley J. Wise
1969-6-1
141
Lassen
2 mi. north of Susanville on Hwy 139.
1341
Comment
CAS-BOT-BC299812
Dieteria canescens var. canescens
Elmer I. Applegate
1923-9-30
4031
Lassen
Doyle
Comment
UC1523714
Dieteria canescens var. canescens
Gary Schoolcraft
1981-7-21
542
Lassen
1524
Comment
CHSC60820
Dieteria canescens var. shastensis
Vernon H. Oswald; Lowell Ahart
1993-6-28
5596
Lassen
Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, between Grays Valley and Harvey Valley, E of Poison Lake.
1734
Comment
HSC42427
Dieteria canescens var. shastensis
Barbara Kelly
1977-8-9
562
Lassen
16 1/4 miles E of Madeline
Comment
CHSC36479
Diplacus mephiticus
Margaret E. Halloran
1982-6-6
10
Lassen
Pine Creek just below fish trap where Pine Creek empties into Eagle lake.
Comment
CHSC67069
Diplacus mephiticus
Willis Ball
1969-6-19
10
Lassen
Found in old dry Eagle Lake basin about 1/2 mile N.E. of E.L.B.S.
1554
Comment
CHSC71133
Diplacus mephiticus
Vernon H. Oswald; Lowell Ahart
1998-5-22
9118
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
OBI76990
Diplacus mephiticus
Anthony Baniaga
2011-7-5
418
Lassen
Lassen Natl Forest. E of Willard Crk. Fredonyer Pass quad. T29N R10E sec 25 NE of NW
1503
Comment
CHSC13507
Distichlis spicata
J. Pitts
1972-6-22
251
Lassen
150 yds. n of Eagle Lake Biology Station.
Comment
CHSC67075
Distichlis spicata
Willis Ball
1969-6-19
11
Lassen
Found in dry Eagle Lake basin about 1/2 mile N.E. of E.L.B.S.
1554
Comment
HSC9639
Distichlis spicata
M. T. Milligan
1964-8-6
199
Lassen
Eagle Lake, near shore at Eagle Lake General Store.
1677
Comment
CAS-BOT-BC136181
Dodecatheon alpinum
John Thomas Howell
1934-6-14
12114
Lassen
Near Lost Lake - Warner Mountains
2438
Comment
UC1553397
Dodecatheon conjugens
G. Schoolcraft
1988-4-25
1783
Lassen
Ash Valley RNA/ACEC 16 mi e Adin; Ash Valley RNA/ACEC e of Adin
1554
Comment
UC773868
Dodecatheon conjugens
L. R. Short
1936-4-28
S- 331
Lassen
Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest)
1767
Comment
CHSC4919
Dodecatheon pulchellum
L. G. Bennett
1967-7-14
147
Lassen
Immediate vicinity of Silver Lake.
1975
Comment
CHSC60825
Downingia bacigalupii
Vernon H. Oswald; Lowell Ahart
1993-6-28
5612
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
JEPS96026
Downingia bacigalupii
Vernon H. Oswald and Lowell Ahart
1996-6-24
7845
Lassen
2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins); Modoc Plateau, Papoose Meadows
1633
Comment
UC2047850
Downingia bacigalupii
Debra Valov
2016-6-21
1296
Lassen
Bieber; off County Rd. A2 c. 8 km east of Hwy 299; 100 m up private driveway; in dry vernal pool/ditch.
Comment
JEPS108450
Downingia bacigalupii
Lisa Schultheis
1995-6-27
227 -95
Lassen
About 3.5 mi S of Madeline, W side of Hwy 395.
Comment
RSA292990
Downingia bacigalupii
Stanton A. Cook
1958-7-19
824
Lassen
7.4 miles N of Ravendale on route 395.
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
JEPS14500
Downingia bicornuta var. bicornuta
Joseph Grinnell
1928-6-26
Lassen
Poison Lake
1737
Comment
UC1037336
Downingia bicornuta var. bicornuta
Leo Whitney
1933-8-20
1693
Lassen
ca 25 mi w upper end of Eagle Lake (near Halls Flat); Lassen National Forest
1737
Comment
UC1143175
Downingia bicornuta var. bicornuta
Robert W. Gardner
1937-6-26
G- 24
Lassen
Poison Lake Halls Flat Quad.
1706
Comment
UC890609
Downingia bicornuta var. bicornuta
Elmer I. Applegate
1929-6-24
5883
Lassen
just n Bieber (nw corner of Lassen County)
Comment
JEPS108508
Downingia bicornuta var. bicornuta
Lisa Schultheis
1995-6-27
228 -95
Lassen
W sie of Rt. 395, 3.5 mi S of Madeline.
Comment
UCD58787
Downingia elegans
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
RSA128294
Downingia insignis
P. H. Raven, Otto T. Solbrig
1958-6-17
13282
Lassen
Along U.S. Hwy 395, 1.9 miles S of Ravendale.
Comment
RSA298985
Downingia insignis
Helen-Mar Wheeler
1952-7-11
s.n.
Lassen
South of Madeline.
Comment
SJSU3174
Downingia insignis
J. W. Tilden
1958-6-27
1290
Lassen
Madeline
Comment
UC1188739
Downingia insignis
John H. Weiler, L. Constance, and E. Molseed
1960-6-13
60163
Lassen
1.7 mi s Ravendale (w side of U.S. Highway 395)
Comment
RSA293375
Downingia insignis
Reino Alava
1957-7-5
1144
Lassen
Along Highway 395, 10 miles N of Madeline.
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
POM68166
Downingia laeta
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1220
Comment
CHSC508
Draba verna
J. Wakeman
1963-5-11
Lassen
6 mi. east of Bieber on hiway 299.
Comment
CHSC61140
Draba verna var. aestivalis
Vernon H. Oswald; Lowell Ahart
1993-5-12
5391
Lassen
Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road.
1652
Comment
CAS-BOT-BC159342
Drymocallis lactea var. lactea
Louella Bass
1973-6-14
106
Lassen
Elysian Valley - Sierra Nevada
1325
Comment
CAS-BOT-BC159343
Drymocallis lactea var. lactea
John Thomas Howell; Gordon H. True
1973-8-1
50224
Lassen
East slope of Diamond Range south of Susanville - Sierra Nevada
2133
Comment
CHSC76099
Elaeagnus angustifolia
Lowell Ahart; Vernon H. Oswald
1999-9-13
8223
Lassen
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
CHSC107341
Elatine californica
Lowell Ahart; John Dittes
2011-6-21
17527
Lassen
Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley.
1268
Comment
CHSC116198
Elatine californica
Lowell Ahart; John Dittes
2015-7-13
20300
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
JEPS123970
Elatine californica
Lowell Ahart, John Dittes
2015-7-13
20296
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
CHSC60975
Elatine chilensis
Lowell Ahart
1993-5-17
6954
Lassen
On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville.
Comment
CAS-BOT-BC113617
Eleocharis acicularis
George Wilson Gillett
1957-7-22
878
Lassen
Snag Lake. Margin of gravel bars along south shore.
1844
Comment
CHSC60449
Eleocharis acicularis var. acicularis
Mary Ann Showers
1992-6-13
2548
Lassen
Lassen Volcanic National Park. Shoreline at western end of Widow Lake.
2072
Comment
JEPS87445
Eleocharis bella
Vernon H. Oswald and Lowell Ahart
1993-6-28
5599
Lassen
n.e. Poison Lake (n. of Hwy. 44 at n.w. edge of Harvey Valley, Rd. 35N04 at Aspen Well); Harvey Valley, Aspen Well
1725
Comment
CAS-BOT-BC112847
Eleocharis macrostachya
Hans Leschke
1959-8-2
1588
Lassen
Manzanita Lake
1781
Comment
RSA252444
Eleocharis parishii
Robert F. Thorne, C. W. Tilforth
1969-9-6
39258
Lassen
along Long Valley Creek, c. 14 mi. SE of Milford.
1311
Comment
UCD62904
Elymus X saundersii
Lester J. Berry
1960-7-8
Lassen
Burgess Springs Road, floor of Harvey Valley, ca. 7 miles S of Black's Mtn. Exper. Station, USDA.
Comment
CHSC100134
Elymus cinereus
L. P. Janeway
2008-8-2
9527
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
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
CHSC67076
Elymus cinereus
Willis Ball
1969-6-25
39
Lassen
Found in Upper Murrer's Mdw.
1584
Comment
JEPS123502
Elymus cinereus
Wilson Collison, Jaileen Merced
2015-10-26
CA 320 -149
Lassen
Head south on US-395 for 31.4 mi towards Madeline, turn left on Clarks Valley Road. Drive 10.5 mi on Clark Valley Road; take a right on Blue Lake Road.
Comment
CHSC7700
Elymus condensatus
Beverley J. Wise
1969-5-23
130
Lassen
35 mi. S.E. of Susanville on Las. Co. Rd. 320.
1249
Comment
CAS-BOT-BC227490
Elymus elymoides
Gary Schoolcraft
1983-6-29
1053
Lassen
Ash Valley
1554
Comment
UCD61485
Elymus elymoides
Beecher Crampton
1954-7-6
2075
Lassen
Along US Hwy 395, 15 miles south of Ravendale.
1676
Comment
UCD61621
Elymus elymoides
R. Tofsrud
1947-7-1
217
Lassen
East of Madeline.
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
JEPS128171
Elymus elymoides var. californicus
M. C. Mahoney, J. A. Nash
2017-7-31
CA 350 -86
Lassen
On Fredonyer Peak. From Susanville take Highway 139 N towards Eagle Lake and turn right following signs for Fredonyer Peak Fire Lookout. Towards the top, stay right at both forks in the road. Follow the road past the last fork for two miles. Population is on both sides of the road.
Comment
CAS-BOT-BC234094
Elymus multisetus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49447
Lassen
Elysian Valley west of Janesville, Sierra Nevada
1325
Comment
CHSC117482
Elymus spicatus
L. P. Janeway; B. Castro
2015-6-5
11761
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
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
UC70687
Elymus trachycaulus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Honey Lake Valley
Comment
UCD32662
Elymus trachycaulus
Beecher Crampton
1954-7-5
2058
Lassen
Lassen County, 4.5 miles west of Susanville, along state highway 36.
1432
Comment
CHSC76104
Elytrigia elongata
Lowell Ahart; Vernon H. Oswald
1999-9-13
8212
Lassen
On the edge of a canal, just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish.
1207
Comment
CHSC23330
Ephedra viridis
Mark Stopher
1976-1-11
29
Lassen
Ca. 52 miles south of Susanville on Hwy. 395 then two miles east on Red Rock Road.
1328
Comment
CHSC60268
Ephedra viridis
P. V. Caldwell
1972-6-30
299
Lassen
22 mi from Hwy 139, 7 mi w of Ravensdale (turnoff 15 mi from Susanville).
Comment
CHSC64747
Ephedra viridis
Vernon H. Oswald
1995-6-7
6832
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 9.5, 4.1 mi e of Wendel, ne of Susanville.
1231
Comment
CHSC7704
Ephedra viridis
Beverly J. Wise
1969-5-18
44
Lassen
13.4 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215.
Comment Read comments Dec 31 2006
HSC1311
Ephedra viridis
L. H. Myers
1963-4-14
35
Lassen
2 mi. S of Hwy. 395, Doyle
1372
Comment
JEPS94829
Ephedra viridis
Vernon H. Oswald and Lowell Ahart
1998-5-22
9103
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
UCD14623
Ephedra viridis
Nathan Horn
1989-5-18
14
Lassen
Great Basin, along Highway 70.
1487
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
RSA252401
Epilobium brachycarpum
Robert F. Thorne, C. W. Tilforth
1969-9-6
39263
Lassen
C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake).
1280
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
UC1594621
Epilobium campestre
Vernon H. Oswald and Lowell Ahart
1992-7-16
5110
Lassen
between Old Station and Susanville (s side of Hwy 44); McCoy Flat Reservoir, Bridge Creek
1691
Comment
CHSC113008
Epilobium ciliatum subsp. ciliatum
Lowell Ahart; John Dittes
2013-7-22
18856
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
HSC95173
Epilobium ciliatum subsp. ciliatum
Gordon Leppig, J. Cromwell
1997-7-27
617
Lassen
Modoc National Forest, Blue Lake Ranch.
1970
Comment
JEPS121238
Epilobium ciliatum subsp. ciliatum
Lowell Ahart, John Dittes
2013-7-22
18856
Lassen
30 yards S of the man-made pond, about 120 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
POM46399
Epilobium ciliatum subsp. ciliatum
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1220
Comment
NY1001467
Epilobium ciliatum var. ciliatum
M. A. Nobs
1949-8-20
1471
Lassen
Honey Lake Valley, 1 mile south of Milford
Comment
CHSC113082
Epilobium densiflorum
Lowell Ahart; John Dittes
2013-7-22
18878
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
NY1000301
Epilobium glaberrimum var. fastigiatum
C. B. Hardham
1969-8-28
17438
Lassen
Granitic slope west of Janesville
Comment
RSA123006
Epilobium hallianum
L. R. Short, J. Warren
1936-6-11
S- 429
Lassen
Burgess Spr. Exp. Range
1738
Comment
CHSC77220
Epilobium oregonense
G. Schoolcraft
1993-7-20
2330
Lassen
About 1 mile s. of Boot Lake. Along creek.
1950
Comment
CHSC96725
Epilobium oregonense
Gordon Leppig; T. LaBanca, L. Arguello
1997-6-29
527
Lassen
Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex.
1970
Comment
HSC95331
Epilobium oregonense
Gordon Leppig, J. Cromwell
1997-7-27
605
Lassen
Modoc National Forest, Blue Lake Ranch.
1970
Comment
SEINET3271522
Epilobium oregonense
Marcus E. Jones
1897-6-30
Lassen
4 mi. below Eagle Lake
1524
Comment
SEINET194973
Epilobium pallidum
A. A. Heller
1938-7-28
15295
Lassen
Edge of swamp about mile east of Westwood
1524
Comment
CHSC96704
Epilobium palustre
Gordon Leppig; T. LaBanca, L. Arguello
1997-6-29
538
Lassen
Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex.
1970
Comment
HSC95345
Epilobium palustre
Gordon Leppig
1998-8-17
1049
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CHSC117524
Epilobium torreyi
Lowell Ahart; John Dittes
2016-7-13
21126
Lassen
West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miless (air) southwest of Adin, hills at the southern slope of Big Valley.
1289
Comment
CHSC66368
Equisetum arvense
Vernon H. Oswald; Lowell Ahart
1996-6-17
7821
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of a pool at the 6.0 mile post E of Devils Corral Trailhead.
1420
Comment
CHSC61944
Equisetum laevigatum
Eenam Sin
1992-6-2
18
Lassen
Murrers Meadow.
1524
Comment
JEPS94837
Eragrostis pectinacea var. pectinacea
Vernon H. Oswald and Lowell Ahart
1998-9-8
9578
Lassen
Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber; , Highway 299
1255
Comment
SEINET8267478
Eremogone congesta
L. E. Detling
1936-6-28
1757
Lassen
near Susanville.
Comment
CHSC68856
Eremogone congesta var. subcongesta
Vernon Oswald; Lowell Ahart
1997-6-24
8632
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
SJSU3559
Eremogone congesta var. subcongesta
V. Hardham
1965-7-12
129
Lassen
Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139, Modoc National Forest
1463
Comment
CAS-BOT-BC174308
Eremogone congesta var. suffrutescens
George W. Gillett
1957-7-29
945
Lassen
Along trail between Butte Lake and Snag Lake. Lassen Volcanic National Park
1859
Comment
UC1483875
Eremothera boothii subsp. alyssoides
G. Schoolcraft
1980-5-16
234
Lassen
on Wendell Hwy n kiln
1280
Comment
UC1483823
Eremothera minor
G. Schoolcraft
1980-6-11
267
Lassen
w Wendel
1219
Comment
CHSC5057
Eriastrum signatum
B. Anthony
1967-7-7
253
Lassen
Deans Meadow, 6.8 mi. from Eagle Lake Biological Station.
1920
Comment
JEPS19760
Eriastrum signatum
Rimo Bacigalupi with S. Galen Smith
1957-6-28
6008
Lassen
along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon)
1615
Comment
UC572262
Eriastrum signatum
E. Sawyer
1935-6-29
222
Lassen
LOng Valley Sierraville Quadrangle
1310
Comment
CAS-BOT-BC515172
Eriastrum signatum
Louella Bass
1982-6-20
s.n.
Lassen
At cemetery gate, McKeasick
Comment
CAS-BOT-BC515173
Eriastrum signatum
Gary Schoolcraft
1982-6-22
720
Lassen
Ft. Sage Mtns.
1463
Comment
CDA39986
Eriastrum signatum
T. C. Fuller
1980-8-6
20323
Lassen
0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale.
0
Comment
UCD54567
Eriastrum sparsiflorum
Ellen Dean; Dawn Cunningham
2005-10-25
2750
Lassen
East of the town of Susanville. Property N of California Correctional Facility.
1248
Comment
UC23553
Eriastrum wilcoxii
M. S. Baker and Frank Nutting
1892-7-2
Lassen
s side Dixey Mts.
Comment
CHSC349
Ericameria bloomeri
1944-7-31
Lassen
Westwood.
1549
Comment
CHSC36978
Ericameria bloomeri
M. S. Taylor; B. Hammond
1982-8-27
5054
Lassen
Crystal Peak area, Diamond Mts, ca. 6 air mi sw of Doyle.
2377
Comment
UC1523743
Ericameria bloomeri
Gary Schoolcraft
1981-8-25
565
Lassen
w side of Eagle Lake (along main road)
Comment
CAS-BOT-BC298172
Ericameria nauseosa var. oreophila
C. B. Wolf
1931-9-6
2403
Lassen
Honey Lake Valley, 3 miles from Wendel on the road to Janesville
1219
Comment
CAS-BOT-BC298180
Ericameria nauseosa var. oreophila
Carl B. Wolf
1931-9-6
2403
Lassen
Honey Lake Valley, 3 miles from Wendel, on road to Janesville
1219
Comment
RSA719707
Ericameria nauseosa var. oreophila
Michael A. Vincent, K. Levings
2006-7-29
12921
Lassen
Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line.
Comment
CAS-BOT-BC294180
Ericameria nauseosa var. speciosa
G. Schoolcraft
1987-9-9
1775
Lassen
Ash Valley RNA
1554
Comment
CAS-BOT-BC294185
Ericameria nauseosa var. speciosa
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50696
Lassen
South and southeast of Diamond Mt.
2286
Comment
CAS-BOT-BC294186
Ericameria nauseosa var. speciosa
John Thomas Howell; Gordon H. True
1973-8-1
50216
Lassen
Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville
2164
Comment
JEPS21495
Ericameria nauseosa var. speciosa
R. F. Hoover
1940-9-27
4628
Lassen
Susanville
Comment
UC217115
Ericameria nauseosa var. speciosa
H. M. Hall
1921-9-11
11681
Lassen
s side of Honey Lake Valley
Comment
CAS-BOT-BC294188
Ericameria nauseosa var. speciosa
L. A. Waitzinger
1923-8-16
s.n.
Lassen
Susanville, north slope of Inspiration Pt
Comment
UC527350
Ericameria parryi var. nevadensis
C. B. Wolf
1931-9-6
Lassen
0.5 mi from Janesville (on the road to Wendel, w edge of Honey Lake Valley); Honey Lake Valley
1280
Comment
CDA18270
Erigeron
G. D. Barbe
1974-8-2
1935
Lassen
Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70.
1524
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
UC135492
Erigeron aphanactis var. aphanactis
unknown
1892-6-22
Lassen
Honey Lake
Comment
CAS-BOT-BC294490
Erigeron bloomeri var. bloomeri
David D. Keck; J. Clausen
1935-6-24
3745
Lassen
2 mi. S. of Ravendale
1464
Comment
CHSC64753
Erigeron bloomeri var. bloomeri
Vernon H. Oswald
1995-5-31
6806
Lassen
Modoc Plateau. Smoke Creek Ranch Rd. 0.9 mi e of Hwy. 395, between Litchfield and Ravendale.
1353
Comment
HSC82194
Erigeron bloomeri var. bloomeri
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6048
Lassen
Along Ash Creek at Ash Creek Campground
1494
Comment
SEINET11826499
Erigeron bloomeri var. bloomeri
Unknown
1967-1
545
Lassen
10 yds off S side road
Comment
CHSC93675
Erigeron canadensis
Lowell Ahart; John Dittes
2005-6-2
11974
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
CAS-BOT-BC295980
Erigeron divergens
Clare B. Hardham
1961-6-17
7504
Lassen
Baxter Creek south of Susanville
1524
Comment
CHSC66373
Erigeron divergens
Vernon H. Oswald; Lowell Ahart
1996-6-17
7808
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the Susan River E of Devils Corral Trailhead and W of the 6.0 mile post.
1402
Comment
JEPS88241
Erigeron divergens
Vernon H. Oswald and Lowell Ahart
1996-6-17
7808
Lassen
gravel bar on edge of river e Devils Corral Trailhead (Bizz Johnson Trail) (w of 6.0 milepost, trailhead located off of Hwy 36, ca. 7 mi w of Susanville); Modoc Plateau, Susan River
1402
Comment
SEINET5708466
Erigeron divergens
Lowell E. Urbatsch, Vesna Karaman, Castro
2000-1
7708
Lassen
Along CA 139. Willow Creek.; Willow Creek
1428
Comment
UC1924196
Erigeron divergens
Debra Valov
2005-8-20
2005234
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1274
Comment
RSA78916
Erigeron divergens
E. K. Balls, Percy C. Everett
1952-10-10
18144
Lassen
8 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas.
1280
Comment
SEINET10475564
Erigeron eatonii var. nevadincola
Mary Merello
1993-6-28
Merello 753
Lassen
Lassen National Forest. Along Forest Service Road 33N02 to Harvey Mountain Lookout and Harvey Valley. Open pine scrub and sagebrush woodland.
1740
Comment
UC1609229
Erigeron eatonii var. plantagineus
Vernon H. Oswald and Lowell Ahart
1993-6-14
5505
Lassen
Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley
1728
Comment
CAS-BOT-BC33453
Erigeron elegantulus
Milo Samuel Baker; Franklin P. Nutting
1894-7-5
s.n.
Lassen
Dixey Valley
Comment
UCD131967
Erigeron glacialis var. glacialis
T. I. Storer
1932-7-31
s.n.
Lassen
Upper King Creek Meadows, Lassen Volc. Nat'l Park.
2286
Comment
SBBG8113
Erigeron inornatus
H. and M. Dearing
1938-7-1
2236
Lassen
Susanville
Comment
JEPS97369
Erigeron inornatus var. calidipetris
Vernon H. Oswald and L. Ahart
1995-7-24
7146
Lassen
T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor
1905
Comment
CHSC25547
Erigeron inornatus var. inornatus
Robert A. Schlising
1974-7-19
3153
Lassen
SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station.
Comment
JEPS100464
Erigeron inornatus var. inornatus
Dean W. Taylor
2001-6-28
17820
Lassen
Diamond Mountains, Crystal Peak, along ridgeline at the summit
2377
Comment
RSA712920
Erigeron inornatus var. inornatus
L. P. Janeway
2005-8-27
8521
Lassen
High Cascade Range. Along road 22, 2.1 road km west of its beginning/end at Road 35N05 in Little Valley
1415
Comment
CAS-BOT-BC295237
Erigeron lonchophyllus
G. Schoolcraft
1999-6-29
2848
Lassen
E. edge of Madeline Plains about 9 mi. ne of Ravendale
1615
Comment
CHSC12615
Erigeron philadelphicus
Jannae Pitts
1972-6-23
265
Lassen
On the road to Eagle Lake Field Station, 2 mi se of the station on the e side of the road.
Comment
POM33279
Erigeron pumilus subsp. intermedius
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat. [also Chats, a former settlement]
1524
Comment Read comments Mar 6 2011
CHSC71222
Erigeron pumilus var. intermedius
Vernon H. Oswald; Lowell Ahart
1998-6-4
9139
Lassen
Red Rock Rd at its junction with Hwy. 395 south of Constantia.
1365
Comment
JEPS22799
Erigeron pumilus var. intermedius
George A. Fischer and Irwin H. Johnson
1933-7-12
F 209
Lassen
Grass Valley Lassen Forest, Grass Valley
1700
Comment
JEPS93827
Erigeron pumilus var. intermedius
Vernon H. Oswald and Lowell Ahart
1998-6-4
9139
Lassen
Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road
1365
Comment
CHSC116927
Eriogonum
J. P. Bergmann
3011-04-30
Lassen
Fort Sage OHV Recreation area.
1450
Comment
SEINET530701
Eriogonum baileyi var. baileyi
Paul Opler
2007-7-7
Lassen
N end Turtle Mountain.
1288
Comment
UCR92116
Eriogonum baileyi var. baileyi
G. R. Ballmer
1993-7-31
s.n.
Lassen
Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border
1215
Comment
UC762679
Eriogonum baileyi var. praebens
R. F. Hoover
1940-10-5
4673
Lassen
pass between Shaffer Mt. and Warren Peak
Comment
CHSC64804
Eriogonum caespitosum
Vernon H. Oswald
1995-5-31
6795
Lassen
Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale.
1383
Comment
CAS-BOT-BC241835
Eriogonum caespitosum
Pauleen Broyles
1977-5-30
150
Lassen
Ca. 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Creed [Creek] Road, ca 8 km ne of Herlong
1660
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
OBI48168
Eriogonum caespitosum
Rhonda Riggins
1989-4-27
1634
Lassen
US 395, 8.4 mi N Litchfield, 26.6 mi S Rav endale
1311
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
UC1395152
Eriogonum collinum
James L. Reveal
1971-6-22
2463
Lassen
4.5 mi s, along U.S. Highway 395 Ravendale
Comment
CHSC68899
Eriogonum douglasii var. meridionale
Vernon Oswald; Lowell Ahart
1997-6-24
8639
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
CAS-BOT-BC246510
Eriogonum elatum var. elatum
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50666
Lassen
Summit ridge of Diamond Mt.
2346
Comment
CHSC50839
Eriogonum elatum var. elatum
Vernon Oswald; Lowell Ahart
1990-7-25
4399
Lassen
Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395.
1463
Comment
RSA766386
Eriogonum eximium
Susan Hutchinson
1929-12
857
Lassen
Desert slope of Sierra Nevada, Lassen.
1220
Comment
UC2062573
Eriogonum gracile
Belinda Lo with Alex Randolph-Lowe
2017-10-9
391
Lassen
LASSEN COUNTY: North of Red Rock Road.
Comment
SEINET210992
Eriogonum gracilipes
Noel H. Holmgren, Barton L. Bethe
1970-6-25
4378
Lassen
Northe end if Petersen Mountain, near U.S. 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). T 23N, R 18E. Sec 6.
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
RSA780322
Eriogonum marifolium
Elizabeth A. Kempton
2007-8-15
509
Lassen
Lassen National Forest, Lassen Peak ca. 0.25 mile along trail from trailhead/parking lot.
2678
Comment
CAS-BOT-BC267345
Eriogonum marifolium var. marifolium
John Thomas Howell
1934-7-9
12521
Lassen
Pine Creek Flat
Comment
NY430485
Eriogonum microthecum var. ambiguum
G. Schoolcraft
1999-7-28
2871
Lassen
Ridge on east end of Skedaddle Mountains
2133.6
Comment
UC7867810
Eriogonum microthecum var. ambiguum
R. F. Hoover
1940-9-28
4636
Lassen
canyon n Leavitt
Comment
NY282159
Eriogonum microthecum var. laxiflorum
R. F. Hoover
1940-9-28
4636
Lassen
Canyon north of Leavitt.
Comment
NY803458
Eriogonum microthecum var. schoolcraftii
G. Schoolcraft
2003-8-26
2946
Lassen
Slopes west of The Mark Store 6 miles southeast of Milford, CA - nw1/4
1320
Comment
CAS-BOT-BC266366
Eriogonum nudum var. deductum
John Thomas Howell; Gordon H. True
1973-7-31
50020
Lassen
On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada
1737
Comment
CAS-BOT-BC266368
Eriogonum nudum var. deductum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49514
Lassen
West of Janesville, Elysian Valley, Sierra Nevada
1325
Comment
SEINET530760
Eriogonum nudum var. deductum
Paul Opler
2008-8-6
Lassen
West of Milford, nr. Laufman Campground.
Comment
CAS-BOT-BC266365
Eriogonum nudum var. deductum
H. D. Ripley; R. C. Barneby
1943-6-13
5700
Lassen
South of Milford
1569
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
CHSC87119
Eriogonum nudum var. pubiflorum
L. P. Janeway
2001-6-20
7204
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
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
CAS-BOT-BC266814
Eriogonum nummulare
Arnold Tiehm
1978-10-14
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
SEINET524402
Eriogonum ochrocephalum var. ochrocephalum
Paul A. Opler
2003-6-29
Lassen
Quarry, 5 mi N of Hallelujah Junction, access road to west of US 295.
Comment
CHSC72220
Eriogonum ovalifolium var. depressum
Vernon H. Oswald
1998-9-14
9627
Lassen
Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood).
1737
Comment
UC54767
Eriogonum ovalifolium var. ovalifolium
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Amadee Honey Lake Valley, Amadee
Comment
UC6570
Eriogonum prociduum
Mrs. R. M. Austin
June, 1894
Lassen
Willow Creek Valley
Comment
NY283074
Eriogonum spergulinum var. reddingianum
R. F. Hoover
1940-10-1
4656
Lassen
Janesville
Comment
POM165251
Eriogonum spergulinum var. reddingianum
M. S. Baker
77
Lassen
Pine Creek.
Comment
UC1032335
Eriogonum spergulinum var. reddingianum
A. Simontacchi
1940-6-5
811
Lassen
3.9 mi nw Cone Mt.; Lassen National Forest, Halls Flat Quadrangle
Comment
CHSC25314
Eriogonum sphaerocephalum var. halimioides
Pauleen Broyles
1977-6-1
165
Lassen
Spencer Basin, 8 km n of Herlong.
1770
Comment
CHSC6226
Eriogonum sphaerocephalum var. halimioides
1944-6-30
Lassen
Eagle Lake. Grasshopper Valley.
1624
Comment
NY283113
Eriogonum sphaerocephalum var. halimioides
H. D. D. Ripley
1943-6-13
5710
Lassen
South of Johnstonville
1325.9
Comment
RSA700051
Eriogonum sphaerocephalum var. halimioides
L. P. Janeway
2001-6-20
7190
Lassen
High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. High Cascade Range, South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain.
1560
Comment
RSA702603
Eriogonum sphaerocephalum var. halimioides
L. P. Janeway
2004-6-26
8142
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
UC1032330
Eriogonum sphaerocephalum var. halimioides
A. Simontacchi
1940-7-8
923
Lassen
5.1 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle
Comment
NY283149
Eriogonum sphaerocephalum var. sphaerocephalum
N. H. Holmgren
1980-7-4
9499
Lassen
Observation Peak, south side of mountain, 19 km. (11.5 miles) airline distance east-southeast of Ravendale
1830
Comment
SEINET11261382
Eriogonum sphaerocephalum var. sphaerocephalum
Robert L. Johnson, Mikel R. Stevens
2015-7-10
3921
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
UC85705
Eriogonum sphaerocephalum var. sphaerocephalum
T. S. Brandegee
1892-6-30
Lassen
Susanville
Comment
CHSC12967
Eriogonum strictum var. anserinum
K. R. Stern
1974-6-26
5865
Lassen
E end of Champs flat.
Comment
UCD149821
Eriogonum strictum var. proliferum
William Anderson
1963-6-2
s.n.
Lassen
Lassen County.
Comment
CAS-BOT-BC267890
Eriogonum umbellatum
A. A. Heller
1938-6-23
15202
Lassen
West of Susanville
Comment
CAS-BOT-BC267895
Eriogonum umbellatum
A. M. Vollmer; L. Beane
1953-7-1
46
Lassen
Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur
1554
Comment
CAS-BOT-BC267896
Eriogonum umbellatum
Alice Eastwood; John Thomas Howell
1940-6-11
7981
Lassen
Big Valley Mts.
Comment
CAS-BOT-BC267898
Eriogonum umbellatum
John Thomas Howell
1934-7-6
12436
Lassen
Harvey Valley
Comment
CAS-BOT-BC267899
Eriogonum umbellatum
John Thomas Howell
1976-7-20
52009
Lassen
About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek, Sierra Nevada
1432
Comment
CAS-BOT-BC267815
Eriogonum umbellatum var. covillei
G. Schoolcraft
1997-8-6
2671
Lassen
Diamond Mtn.
2316
Comment
CHSC13632
Eriogonum umbellatum var. modocense
M. S. Taylor
1974-7-13
306
Lassen
Ca. 150 ft w of Mahogany Lake, ca. 5 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville.
1524
Comment
CHSC30618
Eriogonum umbellatum var. modocense
Eric Miller
1975-7-8
7
Lassen
N. E. slope of Gallatin Peak.
2011
Comment
CHSC86946
Eriogonum umbellatum var. modocense
L. P. Janeway
2001-6-20
7189
Lassen
High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain.
1560
Comment
JEPS114751
Eriogonum umbellatum var. modocense
Lowell Ahart, John Dittes
2008-6-19
14882
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
JEPS56179
Eriogonum umbellatum var. modocense
Brown and Wieslander
1922-7-23
7
Lassen
Martin Sprs., Eagle Lake
Comment
JEPS56226
Eriogonum umbellatum var. modocense
W. L. Jepson
1910-6-10
4115
Lassen
King Creek
1676
Comment
CHSC68902
Eriogonum umbellatum var. nevadense
Vernon Oswald; Lowell Ahart
1997-6-24
8640
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
RSA795324
Eriogonum umbellatum var. polyanthum
L. Ahart, John Dittes
2010-7-31
16988
Lassen
About 2300 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.
1511
Comment
UCR208066
Eriogonum umbellatum var. polyanthum
L. P. Janeway
2004-6-26
8157
Lassen
High Cascade Range, about 1.3 km WSW of Patterson Flat, at junction of roads 35N08 and 35N20, in Blacks Mountain Experimental Forest
1750
Comment
CHSC4943
Eriogonum vimineum
W. Lessig
1967-7-11
26
Lassen
3 mi se of Eagle Lake Biology Station on rd to Murrer's Meadow.
1524
Comment
JEPS22038
Eriogonum vimineum
Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr.
1957-6-29
5994
Lassen
about 1 mi n Sage Hen siding on Southern Pacific R.R. line (just e of U.S. Highway No.395, 7.0 mi n of Madeline)
Comment
UC1032093
Eriogonum vimineum
E. Sawyer
1935-6-27
240
Lassen
3.5 mi ne Beckwith Pass; Sierraville Quadrangle
Comment
UC423672
Eriogonum vimineum
David D. Keck
1930-7-23
951
Lassen
Susanville Sierra Nevada, Susanville
1280
Comment
HSC69595
Eriogonum vimineum
J. Walker
1979-7-18
37
Lassen
Near Skedaddle Creek, S portion
1311
Comment
CHSC23514
Eriophyllum lanatum
Wayne O. Baum
1971-7-6
71 -48
Lassen
E. slope of Gallatin Peak.
1950
Comment
CHSC4262
Eriophyllum lanatum
K. R. Stern
1967-6-24
2414
Lassen
Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station.
1554
Comment
CAS-BOT-BC308135
Eriophyllum lanatum var. achilleoides
John Thomas Howell
1934-6-10
11896
Lassen
Horse Lake
Comment
CAS-BOT-BC308136
Eriophyllum lanatum var. achilleoides
John Thomas Howell
1934-7-6
12445
Lassen
Harvey Valley
Comment
CAS-BOT-BC308138
Eriophyllum lanatum var. achilleoides
John Thomas Howell
1934-7-8
12481
Lassen
Spalding's, Eagle Lake
Comment
RSA712892
Eriophyllum lanatum var. achilleoides
L. P. Janeway
2005-7-3
8453
Lassen
High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout.
1536
Comment
UC604680
Eriophyllum lanatum var. achilleoides
Farris Farris
1935-5-30
Lassen
four mi se Susanville
1341
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
CAS-BOT-BC308139
Eriophyllum lanatum var. achilleoides
Clarence R. Quick
1964-7-29
64 -85
Lassen
Blacks Mt. Experivmental Forest
1798
Comment
CAS-BOT-BC301390
Eriophyllum lanatum var. grandiflorum
R. Carter
1967-6-23
538
Lassen
Along rd to Murrer's Meadow
1584
Comment
UC1118288
Eriophyllum lanatum var. integrifolium
H. P. Hagge
1929-9-11
18
Lassen
Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. (Mb.1)
1828
Comment
UC1283706
Eriophyllum lanatum var. integrifolium
Beecher Crampton
1964-6-25
7068
Lassen
State Hwy 44 25 mi nw Susanville; Lassen National Forest, Bogard Ranger Station
1722
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
UC1924572
Erodium cicutarium
Debra Valov
2006-5-29
2006022
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1280
Comment
JEPS124541
Erodium cicutarium
J. Yamanaka
1965-7-12
121
Lassen
Highway 395, 15 miles N. of junction of Calif. 704 and US 395
Comment
CHSC72213
Eryngium alismifolium
Vernon H. Oswald
1998-9-14
9620
Lassen
Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood).
1737
Comment
UC1594637
Eryngium alismifolium
Vernon H. Oswald and Lowell Ahart
1992-7-16
5104 b
Lassen
Long Lake on s. side of Hwy. 44 between Old Station and Susanville (1.2 mi. s.e. of County Rd. A21); Long Lake
1745
Comment
UCD80866
Eryngium mathiasiae
Robert E. Preston
2007-7-8
2569
Lassen
Big Valley Mtns, 0.4 mi NE of Big Valley Summit, along Hwy 299.
1396
Comment
UC1137587
Erysimum capitatum var. capitatum
A. Simontacchi
1940-6-15
868
Lassen
0.6 mi wsw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle
Comment
JEPS79211
Erysimum repandum
L. R. Heckard with R. C. Bacigalupi
1980-6-11
5247
Lassen
11.3 mi. n. Litchfield (along U.S. 395 s. of Deep Creek crossing, between R.R. & hwy.)
1463
Comment
CAS-BOT-BC55197
Erysimum repandum
William Anderson
1963-4-16
s.n.
Lassen
Honey Lake Valley.
Comment
CHSC5904
Erythranthe guttata
M. West
1946-6-15
Lassen
So. end Eagle Lake.
1584
Comment
CHSC60923
Erythranthe inflatula
Vernon H. Oswald; Lowell Ahart
1993-7-8
5652
Lassen
Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake.
1709
Comment
CAS-BOT-BC151473
Erythranthe latidens
James Jokerst
1983-7-23
1872
Lassen
Grasshopper Valley Quad., near Madeline Plains
1614
Comment
SD7093
Erythranthe lewisii
Austin
1880-1
Lassen
Spanish Peak
Comment
CAS-BOT-BC153610
Erythranthe moniliformis
Louella Bass
1973-6-17
124
Lassen
Elysian Valley
Comment
CHSC96726
Erythranthe primuloides
Gordon Leppig; J. Cromwell
1997-7-27
604
Lassen
Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex.
1970
Comment
OBI76994
Erythranthe pulsiferae
Anthony Baniaga
2011-6-30
403
Lassen
Lassen Natl Forest. Fredonyer Pass quad T29N R10E sec 23 NE of SE
1526
Comment
SEINET13754534
Erythranthe pulsiferae
C. L. Hitchcock
1940-1
6611
Lassen
Lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River
1370
Comment
CAS-BOT-BC502813
Erythronium purpurascens
Alice Eastwood
1912-8-22
s.n.
Lassen
Trail from Morgan Spring to Lassen Butte
Comment
CAS-BOT-BC403147
Eschscholzia californica
Alice Eastwood; John Thomas Howell
1940-6-11
7964
Lassen
Eastern Fall River Valley
Comment
UC1562582
Eucephalus breweri
Barbara Ertter
1988-7-25
7865
Lassen
ca 10 airmi due s of, (ridge of Diamond Mts ca 1.5 mi e of Diamond Peak) Susanville; Diamond Mts.
2255
Comment
CHSC54180
Euclidium syriacum
Vernon H. Oswald
1991-5-28
4616
Lassen
Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the east side of the barn.
1264
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
CHSC5248
Euphorbia crenulata
L. Harman
1946-6-23
Lassen
Eagle Lake. Near top of Roop Mt.
2133
Comment
JEPS124752
Euphorbia serpillifolia
Peter Schultz
1967-7-12
76
Lassen
14.9 miles southeast of Adin on state highway 139; 1/4 mile west of Willow Creek Campground.
Comment
CHSC117511
Euphorbia virgata
Lowell Ahart; John Dittes
2016-7-13
21118
Lassen
Along the drainage, about 100 yards south 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 slop of Big Valley.
1289
Comment
UCD142354
Euphorbia virgata
Fay Roberts
1938-8-21
s.n.
Lassen
Bieber.
Comment
JEPS31883
Eurybia integrifolia
Brown and Wieslander
1922-7-30
14
Lassen
Martin Springs Eagle Lake
Comment
CAS-BOT-BC312105
Eurybia integrifolia
Alice Eastwood
1912-8-22
1914
Lassen
Battle Creek Meadows, Lassen Butte Region
Comment
CAS-BOT-BC312106
Eurybia integrifolia
Alice Eastwood
1912-8-22
1883
Lassen
Morgans Springs, Lassen Butte Region
Comment
CHSC71858
Euthamia occidentalis
Vernon H. Oswald; Lowell Ahart
1998-9-8
9579
Lassen
Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.).
1258
Comment
CAS-BOT-BC413870
Fallopia convolvulus
John Thomas Howell
1975-7-23
51398
Lassen
Susanville
1295
Comment
RSA712794
Festuca
L. P. Janeway
2005-7-3
8460
Lassen
High Cascade Range. At junction of road 22 and road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. NAD83.
1523
Comment
CAS-BOT-BC278432
Festuca idahoensis
Clarence R. Quick
1961-6-21
61 -28
Lassen
Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak
1798
Comment
JEPS114855
Festuca idahoensis
Lowell Ahart, John Dittes
2008-6-19
14880
Lassen
about 100 yds E of Willow Creek, about 120 yds NE of Hwy 139, near Forest Road 36N02, about 19.6 mi E-SE of Bieber
1578
Comment
JEPS17718
Festuca idahoensis
Rimo Bacigalupi with G. T. Robbins
1955-7-19
5371
Lassen
10.3 mi se Adin (along Ash Valley road between Adin and Madeline)
1524
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
UC1136814
Festuca idahoensis
George A. Fischer and Irwin H. Johnson
1933-7-12
F 216
Lassen
Lassen National Forest
1722
Comment
UC60788
Festuca idahoensis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Long Valley Honey Lake Valley
Comment
UCD65970
Festuca idahoensis
R. Tofsrud
1947-7-1
219
Lassen
East of Madeline.
Comment
UCD65974
Festuca idahoensis
L. Whitney
1935-6-17
3268
Lassen
Lassen National Forest, Fruit Grower's Supply Company, Camp 10.
Comment
UCR17288
Festuca idahoensis
Frank C. Vasek
1975-7-11
750711- 04
Lassen
Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd.
1650
Comment
CAS-BOT-BC278433
Festuca idahoensis
Clarence R. Quick
1962-6-17
62 -30
Lassen
Western Pacific RR., S. of Halls Flat, Susanville-Pittville road near Blacks Mt. Experimental Station
1706
Comment
CHSC117218
Festuca microstachys var. microstachys
Lowell Ahart; John Dittes
2016-6-7
21002
Lassen
Near Stonebreaker Road, 0.7 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
CAS-BOT-BC282537
Festuca viridula
Parkison
1916-6-16
27231
Lassen
North slope Crater Mountain, Lassen forest
1767
Comment
JEPS95090
Floerkea proserpinacoides
Vernon Oswald and Lowell Ahart
1997-6-24
8650
Lassen
s of Susanville just s of small ond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout Red Rock Lookout; crest of Diamond Mountain
2249
Comment
CHSC6252
Fragaria virginiana
P. Balch
1955-6-1
Lassen
Stephens meadows.
1905
Comment
CAS-BOT-BC459438
Fragaria virginiana subsp. platypetala
Louella Bass
1973-4-13
15
Lassen
Elysian Valley, Sierra Nevada
1325
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
SEINET3886822
Fritillaria recurva
J. P. Smith, J. O. Sawyer
1972-5-6
5235 a
Lassen
Lassen National Forest; Boundary Campground on State Route 89 south of Burney.; 0
1067
Comment
HSC75888
Galium aparine
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19278
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
RSA121072
Galium aparine
L. R. Short, W. Gansberg
1936-6-2
S- 367
Lassen
Lassen forest. MDM, Burgess Spr. Exp. Range.
1851
Comment
JEPS94548
Galium bifolium
Vernon Oswald and Lowell Ahart
1997-6-24
8606
Lassen
s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43
1655
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
CHSC59813
Galium multiflorum
Mary Meyer; Teresa Prendusi
1980-5-8
Lassen
In rocks on lower Balls Canyon wall.
1341
Comment
UC1226043
Galium multiflorum
Arthur Cronquist and Arthur H. Holmgren
1959-6-17
8471
Lassen
50 mi se Susanville
1371
Comment
JEPS6562
Galium trifidum var. pacificum
Brown and Wieslander
1922-7-30
46
Lassen
Martin Sprs. Eagle Lake
Comment
CHSC23503
Gayophytum
Wayne O. Baum
1971-7-12
71 -75
Lassen
S. slope of Gallatin Peak.
2042
Comment
CAS-BOT-BC478878
Gayophytum
John Thomas Howell; Gordon H. True
1973-8-1
50206
Lassen
Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville
2164
Comment
CAS-BOT-BC478879
Gayophytum
John Thomas Howell; Gordon H. True
1973-7-31
50035
Lassen
On road from Janesville to Thompson Peak, Diamond Range
1737
Comment
JEPS117572
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
CDA18258
Gayophytum diffusum subsp. parviflorum
G. D. Barbe
1974-8-2
1920
Lassen
Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70.
1524
Comment
CHSC37686
Gayophytum diffusum subsp. parviflorum
M. S. Taylor
1982-8-19
5023
Lassen
E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct.
1493
Comment
POM38697
Gayophytum diffusum subsp. parviflorum
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat.
1524
Comment
UC1258488
Gayophytum diffusum subsp. parviflorum
G. Schoolcraft
1979-7-3
116
Lassen
up road to Observation Lookout 4.7 mi from Horne Ranch Road intersection
2103
Comment
UC1186544
Gayophytum diffusum subsp. parviflorum
J. W. MacSwain
1959-8-12
59 -148
Lassen
2 mi n Bridge Camp; Hat Creek
Comment
CHSC27712
Gayophytum humile
Robert A. Schlising
1978-7-1
3301
Lassen
S of Eagle Lake; meadow bordering Mahogany Lake.
2060
Comment
CAS-BOT-BC217396
Gentiana affinis var. ovata
Louella Bass; E. Lagel
1976-9-1
s.n.
Lassen
Willard Creek near confluence with Susan River, Sierra Nevada
Comment
CHSC66725
Gentiana calycosa
Vernon H. Oswald; Lowell Ahart
1996-8-1
8119
Lassen
Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood
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
CHSC5011
Geranium viscosissimum var. nervosum
L. G. Bennett
1967-7-4
105
Lassen
Deans Meadow, near Eagle Lake.
1706
Comment
HSC95165
Geum macrophyllum
Gordon Leppig
1998-7-12
951
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CAS-BOT-BC459363
Geum macrophyllum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49425
Lassen
Elysian Valley, west of Janesville, Sierra Nevada
1325
Comment
CHSC99305
Geum triflorum
Lowell Ahart; John Dittes
2008-6-19
14872
Lassen
Along a small wash, 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
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
RSA0086587
Gilia
Bonnie C. Templeton
1938-4-15
s.n.
Lassen
Near Roscoe.
Comment
UC1776672
Gilia capillaris
G. Schoolcraft
1993-6-19
2299
Lassen
Ash Valley RNA/ACEC
1554
Comment
CHSC64798
Gilia inconspicua
Vernon H. Oswald
1995-5-24
6768
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. Flat bordering the road.
1219
Comment
JEPS17737
Gilia leptomeria
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5422
Lassen
17.5 mi e U.S. 395 (1.3 mi w of Nevada State line, s of Smoke Creek Ranch Road, Rush Creek); Rush Creek, s of Smoke Creek Ranch Road
1353
Comment
UC1483794
Gilia leptomeria
G. Schoolcraft
1980-5-7
220
Lassen
n shore Honey Lake Island n shore of Honey Lake Island
1219
Comment
JEPS107831
Gilia modocensis
Lowell Ahart, John Dittes
2005-6-2
11989
Lassen
Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction
1427
Comment
RSA95714
Gilia modocensis
Verne Grant, Alva Grant
1955-6-8
9666 A
Lassen
c. 2 miles north of Doyle.
1311
Comment Read comments May 2 2012
JEPS109641
Gilia sinistra subsp. sinistra
Dean W. Taylor
2002-6-21
18171
Lassen
Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley
1524
Comment
UC1583986
Gilia sinuata
G. Schoolcraft
1990-6-12
2091
Lassen
about 17 mi e Ravendale (in Pine Dunes RNA); Pine Dunes RNA, e of Ravendale
1706
Comment
UC52853
Gilia sinuata
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
near Chat (Honey Lake Valley); , near Chat
Comment
SD135571
Gilia sinuata
John Thomas Howell, Gordon H. True, Margaret Williams
1973-5-12
49156
Lassen
Janesville, in cemetary.
1295
Comment
CHSC66283
Glyceria borealis
Vernon H. Oswald; Lowell Ahart
1996-6-24
7872
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
HSC95215
Glyceria borealis
Gordon Leppig
1998-7-13
974
Lassen
Modoc Natl. Forest, Blue Lake Ranch
1970
Comment
HSC95337
Glyceria borealis
Gordon Leppig, J. Cromwell
1997-7-27
624
Lassen
Modoc Natl. Forest, Blue Lake Ranch
1970
Comment
JEPS123845
Glyceria borealis
Lowell Ahart, John Dittes
2015-7-14
20326
Lassen
About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment
CAS-BOT-BC302593
Gnaphalium palustre
John Thomas Howell
1973-6-28
s.n.
Lassen
Elysian Valley
1325
Comment
CHSC93664
Gnaphalium palustre
Lowell Ahart; John Dittes
2005-6-2
11968
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
CAS-BOT-BC302592
Gnaphalium palustre
George W. Gillett
1957-9-4
1124
Lassen
Lassen Volcanic National Park. Widow Lake
2072
Comment
CHSC65359
Gratiola heterosepala
Vernon H. Oswald; Lowell Ahart
1995-8-14
7200
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville.
1737
Comment
JEPS4213
Gratiola neglecta
Milo S. Baker
1899-8-24
Lassen
Big Valley; Carmichael's Mill
Comment
CDA23423
Grayia spinosa
Robin Breckenridge
2007-5-1
PDR# 1349824
Lassen
Wendel.
0
Comment
CHSC30600
Grayia spinosa
L. J. Dawson
1975-7-7
41
Lassen
Ca. 500 yd e of Horselake, playa lake.
1584
Comment
CHSC36443
Grayia spinosa
Theresa Costa
1982-6-2
24
Lassen
Along Ravendale Rd ca. 10 yd e of Horse Lake.
Comment
CHSC5231
Grayia spinosa
V. Holt
1944-6-28
Lassen
S slope of Rocky Point, w side of Eagle Lake.
1627
Comment
JEPS59821
Grayia spinosa
W. L. Jepson
1918-8-4
7806
Lassen
Horse Lake
1554
Comment
UC1537382
Grayia spinosa
Gordon H. True Jr.
1936-6-26
551
Lassen
flats s.e. Standish; Honey Lake Valley
1219
Comment
CAS-BOT-BC314597
Grindelia hirsutula
John Thomas Howell
1976-7-19
51955
Lassen
Southwest of Susanville on Gold Run Road, Sierra Nevada
1341
Comment
UC87888
Grindelia hirsutula
T. S. Brandegee
1892-6-30
Lassen
Susanville
Comment
UCD132463
Grindelia nana
Dan Marcum
1978-7-3
s.n.
Lassen
exact location unknown.
Comment
SEINET5709433
Grindelia squarrosa
Lowell E. Urbatsch, Vesna Karaman, Castro
2000-1
7709
Lassen
Willow Creek. Collected along CA 139.; Willow Creek
1428
Comment
JEPS87405
Gymnosteris parvula
Vernon H. Oswald and Lowell Ahart
1993-6-3
5485
Lassen
between Susanville and Poison Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi n of its jct w Lassen 21 (32N02) to Eagle Lake, on w edge of Pine Creek Valley); Pine Creek Valley, Champs Flat Road
1731
Comment
UC1220391
Gypsophila paniculata var. paniculata
T. C. Fuller
1963-7-16
11013
Lassen
Janesville; hillslope n of cemetary
Comment
HSC69598
Hackelia californica
Gary Schoolcraft
1980-7-15
310
Lassen
W of Biebes
1799
Comment
SEINET3928294
Hackelia californica
Anthony Baniaga
2011-7-9
440
Lassen
Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0
1720
Comment
UC1137694
Hackelia californica
L. R. Short, J. Warren
1936-6-26
S 458
Lassen
Burgess Spring Experiment Range; Lassen National Forest
1853
Comment
POM126235
Hackelia cusickii
Franklin P. Nutting
s.n.
Lassen
Dixey Mountains
Comment
UC1483791
Hackelia cusickii
Teresa Prendusi
1980-7-9
Lassen
36 m n of Susanville (on Hwy 139 and 4 m w); Grasshopper Ridge
1737
Comment
UC1553392
Hackelia cusickii
G. Schoolcraft
1988-7-7
1810
Lassen
about 14 air mi ne of Ravendale
1798
Comment
SBBG63470
Hackelia velutina
E. Rockwell
-Jun-1925
53
Lassen
Eagle Lake
1554
Comment
CHSC25102
Halogeton glomeratus
Paul Lyman
1970-5-12
19
Lassen
Skeedaddle Mountain, Smoke Creek Desert, Litchfield. Found 200 yards east of Skedaddle Ranch house along Smoke Creek Spring. This area is high desert grassland and about 1/2 mi. west of Nevada Line.
Comment
CDA36354
Halogeton glomeratus
B. Villegas
2011-8-25
Lassen
Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd.
0
Comment
RSA97605
Halogeton glomeratus
Edward Bass
1951-9-19
s.n.
Lassen
Herlong.
Comment
UCD98898
Halogeton glomeratus
Roy V. Parker; M. Ingle, G. Randall
1955-8-29
s.n.
Lassen
About 6 miles east of Amedee (northern fringe of Sierra Ordnance depot).
Comment
SEINET10904891
Haplopappus bloomeri
Taylor
1982-8-27
Taylor 5054
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
SBBG8396
Helianthella californica
H. and M. Dearing
1938-7-1
2246
Lassen
near Westwood
Comment
UC1192217
Helianthus annuus
Verne Grant and Irving Schneider
1947-7-31
8215
Lassen
irrigation ditch ne quarter George Williams section 19; Madeline Plain
Comment
UCR57493
Helianthus annuus
R. D. Goeden, Don W. Ricker
1989-8-22
890822- 9
Lassen
Hwy 395 and Herlong Access Rd
1259
Comment
CDA18385
Helianthus bolanderi
G. D. Barbe
1978-8-31
2424
Lassen
Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.).
Comment
CHSC118791
Helianthus cusickii
L. P. Janeway; B. Castro
2015-6-5
11755
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
CHSC7636
Helianthus cusickii
Beverley J. Wise
1969-5-15
22
Lassen
28.9 mi. East of Susanville on Hwy 395.
1554
Comment
CHSC92142
Heliotropium curassavicum
L. P. Janeway
2005-8-27
8527
Lassen
High Cascade Range. Northwest shore of Eagle Lake; east end of Sandy Beach, west side of Rocky Point. Gently sloping southwest-facing shoreline.
1550
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
JEPS1678
Hesperochiron californicus
G. S. Crew and C. S. Robinson
1927-1
10
Lassen
<Norval> Flat near Westwood Junction; Lassen Forest
1747
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
CHSC4793
Hesperolinon micranthum
R. Carter
1967-6-29
570
Lassen
On rd to Murrer's Meadow. Eagle Lake.
Comment
POM87380
Hesperolinon micranthum
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
HSC68915
Hesperolinon micranthum
Gary Schoolcraft
1980-7-10
302
Lassen
Along Hwy. 139 just N of turn off to Eagle Lake campground.
1585
Comment
RSA127454
Hesperolinon micranthum
Peter H. Raven, Otto T. Solbrig
1958-6-17
13300
Lassen
8.0 miles north of Madeline along Unites States Highway 395.
Comment
POM68265
Heterocodon rariflorum
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat. [also Chats, a former settlement]
1524
Comment
SEINET1910062
Heterotheca villosa var. minor
Barbara Ertter
1987-1
7302
Lassen
Lassen Co.: ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet in sagebrush zone.
1524
Comment
CAS-BOT-BC312418
Hieracium albiflorum
John Thomas Howell; Gordon H. True
1973-8-1
50220
Lassen
Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville
2164
Comment
CAS-BOT-BC312419
Hieracium albiflorum
John Thomas Howell; Gordon H. True
1973-7-31
50025
Lassen
Road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada
1737
Comment
HSC68934
Hieracium albiflorum
Gary Schoolcraft
1980-7-29
345
Lassen
On Big Valley Mtn. Timber sale area W of Bieber
1768
Comment
UC506909
Hieracium albiflorum
George A. Fischer, Irwin H. Johnson
1933-7-14
F 269
Lassen
Lassen National Forest
1737
Comment
UC92024
Hieracium albiflorum
unknown
1892-7-26
Lassen
Milford
Comment
CAS-BOT-BC312415
Hieracium albiflorum
Alice Eastwood
1912-8-22
1781
Lassen
Trail from Morgans Springs to Sulphur Works, Lassen Butte Region
Comment
CAS-BOT-BC312416
Hieracium albiflorum
George W. Gillett
1957-7-24
895
Lassen
Between Cameron Meadow and Snag Lake
1950
Comment
UC1069594
Hieracium argutum
H. P. Hagge
1929-9-18
39
Lassen
Logan Mountain Eagle Lake Quad., Logan Mountain
Comment
UC1069611
Hieracium scouleri
A. Simontacchi
1940-7-2
937
Lassen
6.3 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quad.
1950
Comment
UC1523774
Hieracium scouleri
Gary Schoolcraft
1981-7-8
500
Lassen
w of Eagle Lake; Coulthurst Flat
1828
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
CHSC65312
Hippuris vulgaris
Vernon H. Oswald
1995-8-21
7211
Lassen
Warner Mts. Blue Lake located ca. 13 mi SE of Likely. Localized colony growing in shallow water of a large, marshy area at the SW corner of the lake.
1859
Comment
UCD84898
Holcus lanatus
John Thomas Howell; Gordon H. True, M. Williams
1973-6-28
49501
Lassen
Sierra Nevada. Elysian Valley west of Janesville.
1325
Comment
SD8400
Holodiscus discolor
R. M. Austin
July 1882
Lassen
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
HSC63966
Holodiscus microphyllus var. glabrescens
Teresa Prendusi
1980-7-10
Lassen
N face of Little Fredonyer Peak, above Horse Lake
1768
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
JEPS120865
Holosteum umbellatum subsp. umbellatum
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18728
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
SEINET7297784
Hordeum brachyantherum
A. A. Beetle
1941-1
2818
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak, open meadow.
Comment
UC1024802
Hordeum brachyantherum subsp. brachyantherum
Leo Whitney
1935-6-23
3291
Lassen
Camp 10 Fruit Grower's Supply Company Lassen National Forest
Comment
UCD85755
Hordeum jubatum
August L. Hormay
1932-8-12
s.n.
Lassen
Lassen National Forest. South E edge of Eagle Lake.
Comment
CAS-BOT-BC289574
Hordeum marinum subsp. gussoneanum
John Thomas Howell
1973-7-10
49804
Lassen
Near Susanville on road to Jonesville, Sierra Nevada
1295
Comment
UC538008
Horkelia fusca subsp. tenella
Leo Whitney
1938-7-3
3038
Lassen
Bogard Ranger Station Lassen National Forest
1767
Comment
UC1951069
Hydrophyllum capitatum var. alpinum
Debra Valov
2009-4-27
2009023
Lassen
Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299
Comment
UC19030
Hypericum anagalloides
M. S. Baker and Frank Nutting
1894-7-9
Lassen
Pine Creek
Comment
CHSC66726
Hypericum formosum var. scouleri
Vernon H. Oswald; Lowell Ahart
1996-8-1
8127
Lassen
Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. Common on a wet, open meadowy slope in mixed coniferous forest on the downhill side of the road.
1737
Comment
JEPS88401
Hypericum formosum var. scouleri
Vernon H. Oswald and Lowell Ahart
1996-8-1
8127
Lassen
ca. 2 mi. n. Dyer Mt. Lookout (Forest Rd. 28N56 (D-Line), on downhill side of rd., s.-s.w. of Westwood)
1737
Comment
SD130459
Hypericum formosum var. scouleri
John Thomas Howell, Gordon H. True and Margaret Williams
1973-6-28
49436
Lassen
Elysian Valley, west of Janesville.
1326
Comment
SEINET11991644
Hypericum formosum var. scouleri
Unknown
1978-1
16
Lassen
Papoose Creek, S of Gallatin Beach on Eagle L
1585
Comment
UC124652
Hypericum formosum var. scouleri
W. E. Bryant
Lassen
Comment
UC729644
Ipomopsis aggregata
Carl B. Wolf
1929-9-1
3785
Lassen
betw Grassy and Snag Lakes Mt. Lassen National Park
Comment
POM75265
Ipomopsis aggregata subsp. formosissima
Marcus E. Jones
1897-6-28
10201
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
RSA748951
Ipomopsis congesta
J. R. Shevock, Barbara Ertter
1986-7-20
11741
Lassen
Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles W of Madeline and U.S. Hwy 395.
1550
Comment
UC584300
Ipomopsis congesta
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-9
2269
Lassen
s Susanville (sw of Diamond Mt.)
2164
Comment
CHSC64801
Ipomopsis polycladon
Vernon H. Oswald
1995-5-24
6769
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road.
1219
Comment
JEPS17345
Iris missouriensis
W. L. Jepson
1918-8-4
7811
Lassen
Horse Lake
1554
Comment
POM312929
Iris missouriensis
H. L. Mason
1949-5-30
s.n.
Lassen
Northeast of Burney Falls
1524
Comment
CHSC59160
Isoetes bolanderi
Vernon H. Oswald; Lowell Ahart
1992-9-15
5215
Lassen
Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. Lassen Volcanic National Park.
2164
Comment
CAS-BOT-BC69982
Isoetes bolanderi
John Thomas Howell
1960-8-23
36431
Lassen
Emerald Lake.
2468
Comment
CHSC76086
Iva axillaris subsp. robustior
Lowell Ahart; Vernon H. Oswald
1999-9-13
8227
Lassen
Along a 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
UC177069
Iva axillaris subsp. robustior
T. S. Brandegee
1892-6-25
Lassen
Honey Lake Honey Lake
Comment
CHSC57121
Ivesia paniculata
Mary Meyer
1980-7-1
Lassen
Ash Valley.
1402
Comment Read comments Jan 15 2009
UC1594838
Ivesia paniculata
J. Stephen Shelly and Ginger V. King
1985-6-29
1029
Lassen
Adin-Madeline Rd. Ash Valley (15.4 mi w of U.S. Hwy 395)
1554
Comment
RSA0005627
Ivesia paniculata
B. Kelly
1977-8-9
559
Lassen
Along dirt road from Adin 16 1/4 mi W of Madeline
Comment
CHSC47521
Juncus balticus
Lowell Ahart; John Thomas Howell
1974-7-9
542
Lassen
At the south edge of Eagle Lake.
1584
Comment
JEPS88220
Juncus brachyphyllus
Vernon H. Oswald and Lowell Ahart
1996-6-17
7805
Lassen
n side og Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau
1420
Comment
UC1567409
Juncus bufonius
G. Schoolcraft
1989-7-18
1981
Lassen
near Bucks Spring (s of Clarks Valley Road)
1874
Comment
SEINET11787326
Juncus bufonius
A. Tiehm, Nachlinger, J.; Schoolcraft, G.
1984-1
8824
Lassen
Rodeo Flat, 2.7 road mi W of state line on Buckhorn road from Ravendale to Hwy 81
1829
Comment
JEPS126567
Juncus bufonius var. congestus
Lowell Ahart, John Dittes
2016-6-7
20987
Lassen
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, hill at the southern slope of Big Valley.
Comment
UC1136937
Juncus confusus
L. R. Short and J. Warren
1936-6-10
S- 418
Lassen
Burgess Spr. Exp. Range Lassen Forest
1856
Comment
UCR88026
Juncus confusus
J. T. Howell, G. H. True
1973-8-1
50171
Lassen
Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range
1585
Comment
JEPS96073
Juncus hemiendytus var. abjectus
Vernon H. Oswald and Lowell Ahart
1996-6-24
7852
Lassen
ca 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows
1633
Comment
HSC97877
Juncus hemiendytus var. hemiendytus
Vernon H. Oswald, L. Ahart
1996-6-24
7852
Lassen
Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1), 2.5 mi. S of Eagle Lake, Modoc Plateau
1634
Comment
JEPS28712
Juncus howellii
George W. Gillett
1957-7-29
943
Lassen
along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park
1859
Comment
RSA201304
Juncus howellii
J. T. Howell
1959-9-23
34880
Lassen
Lassen County: N end of Juniper Lake.
2058
Comment
SEINET3507367
Juncus longistylis
Marcus E. Jones
1897-6-30
Lassen
Susanville, 4 miles below Eagle Lake
1524
Comment
CAS-BOT-BC312669
Juncus luciensis
John Thomas Howell; Louella Bass
1974-7-10
50538
Lassen
Elysian Valley
1325
Comment
UC1543894
Juncus luciensis
John Thomas Howell and Louella Bass
1974-7-10
50538
Lassen
Elysian Valley Sierra Nevada
1325
Comment
UC1100950
Juncus mexicanus
Verne Grant and Irving Schneider
1947-7-30
8191
Lassen
s point of w embayment Tule Lake
Comment
UC2488
Juncus mexicanus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3284
Lassen
Tule Confederacy Honey Lake Valley
Comment
CHSC67714
Juncus nevadensis
James D. Jokerst
1983-7-25
1899
Lassen
Madeline Plains W of Termo.
Comment
HSC95202
Juncus nevadensis
Gordon Leppig, Tony LaBanca, Leonel Arguello
1997-6-28
512
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
HSC95328
Juncus nevadensis
Gordon Leppig
1998-7-12
946
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
UC1100991
Juncus nevadensis
Malcolm A. Nobs and S. Galen Smith
1947-8-24
8266
Lassen
nw shore Blue Lake (n Lassen County)
Comment
UC1594640
Juncus nevadensis
Vernon H. Oswald and Lowell Ahart
1992-7-16
5124
Lassen
1.3 mi n of Hwy 44 and McCoy Flat Reservoir (Swamp on Bridge Creek, w of Cinder Pit on the logging road paralleling the e side of Bridge Creek, between Old Station and Susanville)
1719
Comment
JEPS105651
Juncus occidentalis
L. P. Janeway
2001-6-20
7192
Lassen
High Cascade Range. South side of the junction of the ''22'' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain
1560
Comment
JEPS107949
Juncus tiehmii
Lowell Ahart, John Dittes
2005-6-2
11959
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
CHSC87114
Juncus trilocularis
L. P. Janeway
2001-6-20
7192
Lassen
High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain.
1560
Comment
HSC101239
Juncus trilocularis
Peter Zika
2008-7-14
23893
Lassen
South side of Route 44, SE end of Grays Valley near Lodgepole
1730
Comment
HSC95274
Juncus xiphioides
Gordon Leppig
1998-7-12
945
Lassen
Modoc National Forest, Blue Lake Ranch
1970
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
CHSC117195
Juniperus occidentalis
Lowell Ahart; John Dittes
2016-6-7
20974
Lassen
20 yards west of the pond, about 100 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
UC1001953
Juniperus occidentalis
Mrs. B. A. Berry
1954-9-29
7
Lassen
n Westwood
Comment
UC1134311
Juniperus occidentalis
C. G. Albertus
1935-11-1
294
Lassen
2.1 mi ene Chats; Sierraville Quad.
1569
Comment
UCD22742
Juniperus occidentalis
Todd Sloat
1988-6-4
16
Lassen
NE California. Pittville, CA.
1036
Comment Read comments Apr 29 2013
UCR148432
Juniperus occidentalis
David A. Charlet
1994-7-6
1923
Lassen
Great Basin, Susanville, corner of Main and Fair Streets
1271
Comment
SEINET5334961
Juniperus occidentalis
J. Vetter
1956-4-27
s.n.
Lassen
About 2 miles north of Susanville
1524
Comment
SEINET5334982
Juniperus occidentalis
W. Priest
1956-4-22
s.n.
Lassen
about 2 miles north of Susanville
1524
Comment
UCR3634
Juniperus osteosperma
Frank C. Vasek
1964-8-13
640813- 05
Lassen
US Hwy 395, 2.5 mi east of the Sierra Co. line
Comment
SEINET5334994
Juniperus osteosperma
J. T. Howell
1961-9-26
36969
Lassen
East side of Beckwith Pass
1554
Comment
SEINET5335014
Juniperus osteosperma
P. A. Lehenbauer
1937-10-24
s.n.
Lassen
east & south of Hallelujah Sta. 20 miles N of Reno
Comment
CHSC60409
Kelloggia galioides
Mary Ann Showers
1992-6-13
2541
Lassen
Lassen Volcanic National Park. Along trail from Snag Lake jct to Widow Lake.
1828
Comment
CHSC66402
Kelloggia galioides
Vernon H. Oswald; Lowell Ahart
1996-6-17
7768
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 Hwy. 36 ca. 0.2 mi E of the 7 mile post.
1432
Comment
HSC63934
Kelloggia galioides
Teresa Prendusi
1980-7-21
Lassen
Fredonyer Peak
2195
Comment
HSC69049
Kelloggia galioides
Gary Schoolcraft
1979-7-3
111
Lassen
4.3 mi. up the road from Observation Peak
2134
Comment
UC1137699
Kelloggia galioides
A. Simontacchi
1940-6-14
860
Lassen
7.5 mi wsw Schoonamaker Lake; Lassen National Forest, Halls Flat Quad.
1737
Comment
UC1374967
Kelloggia galioides
Noel H. Holmgren, John J. Fay, and Barton L. Bethers
1970-6-24
4374
Lassen
2 mi w Westwood (at edge of airstrip)
1554
Comment
UC1483816
Kelloggia galioides
G. Schoolcraft
1981-7-28
337
Lassen
s of Blue Lake (Bureau of Land Management)
2072
Comment
UC7408
Kochia americana
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3329
Lassen
Honey Lake Valley
1219
Comment
POM113359
Koeleria macrantha
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1616
Comment
RSA702594
Koeleria macrantha
L. P. Janeway
2004-6-26
8149
Lassen
About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest.
1750
Comment
UC1024950
Koeleria macrantha
Leo Whitney
1935-6-28
3316
Lassen
ca 13 mi w of n end Eagle Lake (Squaw Valley); , w of n end Eagle Lake
Comment
UC1132160
Koeleria macrantha
A. Simontacchi
1940-7-8
945
Lassen
5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle
Comment
CAS-BOT-BC271331
Koeleria pyramidata
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1615
Comment
JEPS88425
Kyhosia bolanderi
Vernon H. Oswald and Lowell Ahart
1996-8-1
8116
Lassen
ca. 0.1 mi downstream Indian Ole Dam on Mountain Meadows Reservoir (sw of Westwood); Hamilton Branch of the North Fork of the Feather River
1524
Comment
UCD106192
Ladeania lanceolata
D. P. Browne
1918-5-1
s.n.
Lassen
Hackstaff.
Comment Read comments Jun 30 2012
UC1924230
Lagophylla ramosissima
Debra Valov
2005-8-20
2005216
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1271
Comment
UC33057
Lagophylla ramosissima
M. S. Baker and F. Nutting
1894-7-2
Lassen
Dixey Mts.
Comment
SEINET14188959
Lamium amplexicaule
L. L. Stitt
1984-5-25
s.n.
Lassen
Susanville
Comment
JEPS125806
Lappula redowskii var. cupulata
William Harnach
2010-6-1
1240
Lassen
Approximately 10 miles NE of Doyle on Fort Sage Road then 1 mile N on Cal -Neva Road. Honey Lake Valley.
Comment
SEINET8584733
Lappula redowskii var. cupulata
W. Harnach
2010-6-1
1240
Lassen
Honey Lake Valley, on Fort Sage Road then 1 mile N on Cal-Neva Road, Alturus powerline, ca 10 miles NE of Doyle.
1219
Comment
JEPS89759
Lasthenia glaberrima
Dean Wm. Taylor with Robert A. Price
1988-6-4
9771
Lassen
6 mi e of MacArthur (along Highway 299 at crossing of Frazer Creek, Fall River Valley, Pit River Watershed); Fall River Valley, Pit River Watershed
1036
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
POM29621
Lathyrus
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkins Ranch.
1829
Comment
SEINET11447828
Layia glandulosa
F. B. Headley
1915-5-28
s.n.
Lassen
Honey lake
Comment
RSA164325
Layia glandulosa subsp. glandulosa
Clare B. Hardham
1961-6-16
7486
Lassen
Gold Run Creek, south of Susanville. Plants of the Sierra Nevada Mountains.
Comment
JEPS89219
Lemna minuscula
Mrs. R. M. Austin
June, 1894
Lassen
Cold Springs, Willow Creek Valley Willow Creek Valley; North East California, Cold Springs, Willow Creek Valley
Comment
UC1101286
Lemna turionifera
Malcolm A. Nobs, S. Galen Smith
1949-7-21
1051
Lassen
1 mi e of Madeline
Comment
CAS-BOT-BC88819
Lepidium campestre
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49226
Lassen
Sierra Nevada. Elysian Valley northwest of Janesville.
1325
Comment
CHSC29943
Lepidium campestre
Robin L. Ondricek
1978-6-19
61
Lassen
Outside the lab at ELFS.
1554
Comment
JEPS114944
Lepidium chalepense
Lowell Ahart, John Dittes
2008-6-20
14978 -B
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
NY628139
Lepidium latifolium
M. D. Windham
2001-6-22
2475
Lassen
Northwest of Wendel in Honey Lake Valley near base of Skedaddle Mountains ca. 10.77 km WSW of the summit (7654) of Hot Springs Peak.
1231.4
Comment
UCR67374
Lepidium latifolium
George K. Helmkamp
1990-9-23
A- 4
Lassen
Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36
1345
Comment
CAS-BOT-BC89721
Lepidium latifolium
G. Schoolcraft
1987-9-24
1780
Lassen
Along Riverside Drive in Susanville.
1310
Comment
UCD115696
Lepidium latifolium
T. C. Fuller
1962-8-28
9478
Lassen
75 sq. ft. infestation on east side of road, Hwy 395 to Litchfield, 4.7 miles south of Ravendale, Madelaine Plains.
Comment
CHSC111251
Lepidium perfoliatum
L. P. Janeway; B. Castro
2012-7-2
10936
Lassen
Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395.
1387
Comment
CHSC64873
Lepidium perfoliatum
Vernon H. Oswald; Lowell Ahart
1995-6-19
6899
Lassen
Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Near the road.
1383
Comment
JEPS126526
Lepidium perfoliatum
Lowell Ahart, John Dittes
2016-6-7
21017
Lassen
On the east edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber.
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
UC1126702
Lepidium perfoliatum
E. Sawyer
1935-6-27
235
Lassen
Long Valley Sierraville Quad.
1310
Comment
CHSC13629
Leptosiphon harknessii
M. S. Taylor
1974-6-25
290
Lassen
Vernal pool ca. 4 ft s of road, ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville.
1524
Comment
CHSC4771
Leptosiphon harknessii
R. Carter
1967-6-27
562
Lassen
Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology station.
1584
Comment
CHSC6205
Leptosiphon harknessii
R. Gein
1946-6-25
Lassen
Webbs Camp, Eagle Lake.
1554
Comment
HSC25423
Leptosiphon harknessii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19252
Lassen
Harvey Valley near Cone Springs
Comment
POM74199
Leptosiphon harknessii
Marcus E. Jones
1897-7-2
10394
Lassen
Susanville
1524
Comment
RSA702599
Leptosiphon harknessii
L. P. Janeway
2004-7-26
8147
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
UCD159576
Leucanthemum vulgare
D. S. Park
2011-6-27
313
Lassen
Near Goodrich Mt. Between Rt. 36 and small stream.
1556
Comment
CAS-BOT-BC334596
Leucanthemum vulgare
Louella Bass
1978-7-11
78 -4
Lassen
Elysian Valley
1325
Comment
CAS-BOT-BC334598
Leucanthemum vulgare
G. Schoolcraft
1987-6-17
1746
Lassen
Along Hwy 36 about 3 miles east of Westwood
1554
Comment
OBI83366
Leucocrinum montanum
Rhonda Riggins
1989-4-27
1650
Lassen
US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line
1676
Comment
SEINET6170686
Leucophysalis nana
G. Schoolcraft
1999-6-29
2849
Lassen
E edge of Madeline Plains ca 9 mi NE of Ravendale
1615
Comment
UC1136693
Lewisia nevadensis
A. Simontacchi
1940-5-5
714
Lassen
10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat quadrangle
Comment
CAS-BOT-BC444185
Lewisia nevadensis
Mrs. H. C. Cantelow
1941-5-22
s.n.
Lassen
Fredonyer Pass, 13.5 miles west of Susanville.
Comment
CAS-BOT-BC283770
Leymus cinereus
John Thomas Howell
1973-7-10
49770
Lassen
Near Westwood
1554
Comment
JEPS126490
Leymus cinereus
Alia Johnson, Jocelyn Munoz, Jillian Sarazen
2016-7-14
CA 350 -76
Lassen
Heading north on 395 turn right on to Smoke Creek Road and drive up the Skedaddle Road, head uphill to the end of private property squares.
Comment
UC1037143
Leymus cinereus
Leo Whitney
3335
Lassen
Camp 10 <of> Fruit Grower's Supply Company Lassen National Forest
Comment
UCD64276
Leymus cinereus
J. Earl Coke
1931-6-30
Lassen
Lassen County.
1524
Comment
RSA647531
Leymus triticoides
Marion P. Harthill
1972-6-16
778
Lassen
Doyle
1372
Comment
SEINET239973
Leymus triticoides
G. L. Clifton
1996-6-5
34630
Lassen
East of Herlong close to the railroad.
1230
Comment
UCD65590
Leymus triticoides
R. Tofsrud
1947-7-1
218
Lassen
Near Thermos.
Comment
CAS-BOT-BC436030
Ligusticum grayi
B. C. Cain
1925-8-24
106
Lassen
1 mi. below Drakesbad, Mt. Lassen Natio,al Park
1645
Comment
HSC21517
Ligusticum grayi
M. T. Milligan
1964-7-16
141
Lassen
2 mi. W on the Silver Lake Rd., along Upper Susan River.
1829
Comment
JEPS88528
Lilaea scilloides
Vernon H. Oswald and Lowell Ahart
1996-6-24
7878
Lassen
Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), in Papoose Creek where it leaves the n end of the meadow, Modoc Plateau); Modoc Plateau, Papoose Meadows
1633
Comment
HSC15584
Lilium pardalinum subsp. pardalinum
Fred J. Kindel
1955-7-8
Lassen
Susan River
Comment
CHSC113073
Limosella acaulis
Lowell Ahart; John Dittes
2013-7-23
18889 A
Lassen
Around a man made pond, 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-BC246147
Limosella aquatica
R. F. Thorne; C. W. Tilforth
1969-9-5
39137
Lassen
Said Valley Reservoir
Comment
RSA0037003
Linanthus bolanderi
Lowell A. Ahart, John Dittes
2008-6-19
14892
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
CHSC29952
Linanthus pungens
Robin L. Ondricek
1978-6-27
75
Lassen
At Brockman Flat Lava Beds on the w side of Eagle Lake.
1584
Comment
CHSC60841
Linanthus pungens
Vernon H. Oswald; Lowell Ahart
1993-6-28
5594
Lassen
Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.
1731
Comment
UC106752
Linanthus septentrionalis
T. S. Brandegee
1892-6-30
Lassen
Jonesville
Comment
UC506914
Linum lewisii
George A. Fischer, Irwin H. Johnson
1933-7-14
F 264
Lassen
Lassen National Forest, Mt. Diablo Meridian Lassen National Forest; , Mt. Diablo Meridian
1767
Comment
POM107663
Listera convallarioides
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkins Ranch.
1829
Comment
CHSC13605
Lithophragma
Lynn R Thomas
1969-4-17
96
Lassen
Ca. 200 yds. up hillside e of Rice Canyon Rd., 5 mi n of junction with 'back road to Litchfield'. Ca 12 mi e of Susanville.
1310
Comment
JEPS87440
Lithophragma tenellum
Vernon H. Oswald and Lowell Ahart
1993-6-3
5478
Lassen
Champs Flat Rd (Lassen 21/105, Forest 32N02), 3.7 mi n Hwy 44 at spur rd 32N02E (between Poison Lake and Susanville, se side of Pine Creek Valley); Pine Creek Valley, btw Poison Lake and Susanville
1731
Comment
UC1609478
Lithophragma tenellum
Vernon H. Oswald and Lowell Ahart
1993-6-3
5478
Lassen
Champs Flat Rd (Lassen 21/105, Forest 32N02), 3.7 mi n Hwy 44 at spur rd 32N02E (between Poison Lake and Susanville, se side of Pine Creek Valley); Pine Creek Valley, btw Poison Lake and Susanville
1731
Comment
UC496334
Lithophragma tenellum
Doris Kildale Gillespie
1930-5-13
9369
Lassen
between Susanville and Janesville
Comment
SBBG125299
Lithospermum arvense
L. Ahart, J. Dittes
2012-7-11
18351
Lassen
N edge of a farmed field, S side of hwy, ca. 100 yards E of Cable Rd and Pittville Rd, 2.16 mi NNE of Pittville, 3955 feet E of Lassen-Shasta County Line, Fall River Valley
1205
Comment
JEPS107869
Lithospermum ruderale
Lowell Ahart, John Dittes
2005-6-2
11932
Lassen
Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction
1498
Comment
UC1924235
Lithospermum ruderale
Debra Valov
2004-6-9
2004259
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1274
Comment
UC131185
Loeflingia squarrosa var. artemisiarum
T. S. Brandegee
1892-6-23
Lassen
Honey Lake
Comment
RSA27417
Lomatium bicolor var. leptocarpum
C. L. Hitchcock
1940-5-26
6648
Lassen
Overflow of Pitt River, 1 mile W of Bieber
Comment
HSC21524
Lomatium caruifolium var. denticulatum
B. R. Templeton
1962-4-24
Lassen
2 mi W of Millville
Comment
JEPS100465
Lomatium dissectum var. multifidum
Dean W. Taylor
2001-6-28
17819
Lassen
Diamond Mountains, Crystal Peak, along ridgeline at the summit
2377
Comment
JEPS118183
Lomatium dissectum var. multifidum
Dean W. Taylor
2004-5-11
19059
Lassen
1.5 miles southwest of Constantina along Highway 395
1402
Comment
JEPS94116
Lomatium macrocarpum
Vernon H. Oswald and Lowell Ahart
1998-5-22
9110
Lassen
ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts.
1402
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
UC1567383
Lomatium nevadense var. nevadense
G. Schoolcraft
1989-5-3
1864
Lassen
near Karlo (n.w. corner Secret Valley); Secret Valley
1356
Comment
SEINET5333498
Lomatium nevadense var. nevadense
K. Chambers
2002-4-21
6347
Lassen
Highway 395, 28 mi. S. of Ravendale, n. of Honey Lake.
Comment
UC1123088
Lomatium nudicaule
A. Simontacchi
1940-6-13
857
Lassen
3.3 mi. w.-s.w. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad.
Comment
UC1137735
Lomatium nudicaule
L. R. Short and Wm. Gansberg
1936-6-8
S- 399
Lassen
Lassen Forest, Burgess Spring Exp. Range
1755
Comment
JEPS25531
Lomatium ravenii
Rimo Bacigalupi with Lincoln Constance
1959-6-16
7145
Lassen
2 mi. s. Ravendale
1615
Comment
LA84781
Lomatium ravenii
Tracy Call; Viola Call
1961-5-30
2048
Lassen
about 2 mi. S of Ravendale
1462
Comment
UC1177543
Lomatium ravenii
Peter H. Raven with Otto T. Solbrig
1958-6-17
13287
Lassen
1.8 mi. s. Ravendale (along U.S. Hwy. 395)
Comment
UC1187686
Lomatium ravenii
Tracey and Viola Call
1961-5-30
2048
Lassen
ca. 2 mi. s. Ravendale
1463
Comment
UCR267419
Lomatium ravenii
Jim Andre, Glenn L. Clifton
1993-6-14
30002
Lassen
northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville
1646
Comment
JEPS126472
Lomatium triternatum
Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky
2015-6-15
CA 350 -045
Lassen
Take Ramhorn Road past campsite for approximately 10-15 miles. Turn left as the fork and continue on for about 3 miles.
Comment
CHSC42630
Lomatium triternatum var. macrocarpum
Vernon Oswald
1986-5-28
2059
Lassen
Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville.
1645
Comment
POM78250
Lomatium vaginatum
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin s Ranch.
1463
Comment
UC21281
Lomatium vaginatum
Mrs. C. C. Bruce
June 1898
2286
Lassen
<Madaline> Plains
Comment
UCD55282
Lomatium vaginatum
Ellen Dean; Gary Schoolcraft
2006-5-16
3101
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
SEINET9672826
Lomatium vaginatum
G. Schoolcraft
1979-5-1
13
Lassen
East of Post Camp
1707
Comment
RSA18256
Lonicera conjugialis
C. B. Wolf
1929-9-1
3786
Lassen
Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake.
Comment
RSA99367
Lonicera conjugialis
F. W. Peirson
1926-6-22
6822
Lassen
Drakesbad, trail to Devils Kitchen, Lassen National Park.
Comment Read comments Apr 25 2013
JEPS87400
Lotus corniculatus
Vernon H. Oswald and Lowell Ahart
1993-6-28
5608
Lassen
1.5 mi ne of Aspen Well (n of Hwy 44 on Harvey Rd One (34N27), n of Harvey Valley, ne of Poison Lake); Harvey Rd One
1761
Comment
POM28315
Lotus crassifolius
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CDA27193
Lotus crassifolius
L. E. Allen
1967-6-4
Lassen
Pinecrest Ranch, 0.5 mile south of Susanville.
0
Comment
RSA406186
Lotus humistratus
W. Hutchinson
1925-7-1
s.n.
Lassen
Lassen
Comment
SEINET10452003
Lotus purshianus
Mary Susan Taylor
1974-1
Taylor 281
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
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
UC1544785
Lotus purshianus var. purshianus
Almut G. Jones
1984-8-11
6876
Lassen
near Doyle (along Road 395)
1350
Comment
NY716012
Lotus tenuis
G. Schoolcraft
1988-7-7
1819
Lassen
Near creek crossing northwest of Horne Ranch
1646
Comment
CHSC110911
Ludwigia palustris
Lowell Ahart; John Dittes
2012-7-9
18291
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
SEINET10903629
Lupinus arbustus subsp. arbustus
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2590
Lassen
Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville, assoc.; Purshia, artemisia
1311
Comment
NY732863
Lupinus arbustus subsp. calcaratus
G. Schoolcraft
1982-6-7
689
Lassen
Doyle Grade west of Doyle Ca.
1646
Comment
SEINET10484655
Lupinus arbustus subsp. calcaratus
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
CHSC5285
Lupinus arbustus var. calcaratus
1927-6-1
Lassen
Eagle Lake. Mt. Freedonyer.
2072
Comment
UCD35223
Lupinus argenteus var. argenteus
Beecher Crampton
1954-7-6
2079
Lassen
Madeline.
1524
Comment
CAS-BOT-BC208752
Lupinus argenteus var. heteranthus
Gary Schoolcraft
1983-7-20
1098
Lassen
S. slopes of Fredonyer Peak
2194
Comment
CAS-BOT-BC208753
Lupinus argenteus var. heteranthus
W. A. Archer
1938-6-16
6020
Lassen
5 mi. W of Doyle
Comment
CAS-BOT-BC208763
Lupinus argenteus var. heteranthus
Charles Piper Smith
1947-5-23
47353
Lassen
Johstonville, 1 mile south, Highway 395
Comment
JEPS114624
Lupinus argenteus var. heteranthus
Lowell Ahart, John Dittes
2008-6-19
14873
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
NY736930
Lupinus argenteus var. heteranthus
G. H. True Jr.
1936-6-27
556
Lassen
Near top of Hot Spring Mountain
1829
Comment
SBBG3562
Lupinus argenteus var. heteranthus
H. and M. Dearing
1938-6-30
2228
Lassen
Poison Lake, 40 mi W of Susanville
1219
Comment
UC1191476
Lupinus argenteus var. heteranthus
Verne Grant, Irving Schneider
1947-8-1
8232
Lassen
Madeline Plain; irrigation ditch running sw into State Fish and Game nesting area on w end of S19
Comment
UC727156
Lupinus argenteus var. heteranthus
A. A. Heller
1938-6-23
15203
Lassen
along U.S. Highway #395 just outside Johnstonville; just outside of Johnstonville
Comment
SEINET5328081
Lupinus argenteus var. heteranthus
F. B. Headley
1915-5-28
s.n.
Lassen
Honey Lake
Comment
CHSC106591
Lupinus argenteus var. meionanthus
C. Dow; D. Garrison
2008-5-3
Lassen
Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs.
1439
Comment
HSC28310
Lupinus brevicaulis
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19280
Lassen
Along Hwy. 395 about 4 mi. E of Standish
Comment
RSA160037
Lupinus caudatus
David B. Dunn
1956-7-3
11914
Lassen
At junction of Highway 395 and 36 near Johnstonville. 6 miles east of Susanville.
Comment
SEINET530758
Lupinus caudatus var. caudatus
Paul Opler
2006-6-9
Lassen
Ash Valley Rd., 5.9 mi E of Adin.
1423
Comment
RSA87160
Lupinus confertus
Mary DeDecker
1955-8-25
262
Lassen
Honey Lake: Highway 395.
Comment
JEPS65081
Lupinus lepidus var. confertus
W. L. Jepson
Aug. 1918
7798
Lassen
Raker Ranch near Buntingville; Raker Ranch naer Buntingville
1219
Comment
JEPS81670
Lupinus lepidus var. confertus
L. R. Heckard with T. I. Chuang and R. C. Bacigalupi
1968-8-12
2118
Lassen
around Honey Lake just n Milford; Honey Lake just n of Milford
1310
Comment
NY747209
Lupinus lepidus var. confertus
G. Schoolcraft
1983-6-29
1039
Lassen
Coulthurst Flat
1890
Comment
UC1129510
Lupinus lepidus var. confertus
H. S. Yates
1936-8-11
6071
Lassen
Baxter Creek; Susanville Quadrangle, Baxter Creek
Comment
NY747210
Lupinus lepidus var. confertus
G. Schoolcraft
1982-7-14
782
Lassen
Along Highway 395 near Janesville
1311
Comment
JEPS114625
Lupinus lepidus var. sellulus
Lowell Ahart, John Dittes
2008-6-19
14886
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
UC126929
Lupinus leucophyllus
M. S. Baker and Frank Nutting
1894-7-21
Lassen
near Eagle Lake; near Eagle Lake
1524
Comment
UC1609421
Lupinus leucophyllus
Vernon H. Oswald and Lowell Ahart
1993-6-28
5607
Lassen
Rd 35N04 n Hwy 44 (nw edge of valley, ne of Poison Lake); Harvey Valley, Aspen Well
1725
Comment
UCSC010319
Lupinus microcarpus var. microcarpus
Unknown
2016-6-7
21018
Lassen
West edge of State Highway 299, Big Valley Mountains, 0.4 air miles northeast of Big Valley Summit, 5.0 air miles southwest of Bieber.
1398
Comment
CAS-BOT-BC323945
Lupinus nevadensis
M. S. Taylor
1982-5-29
4567
Lassen
Along dirt road paralleling Hwy 395, on its E side, ca 0.5 mi N of Hwy 395 jct with Scott Rd, ca. 20 mi N of Reno.
Comment
JEPS94110
Lupinus nevadensis
Vernon H. Oswald and Lowell Ahart
1998-5-22
9113
Lassen
ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts.
1402
Comment
SEINET10450707
Lupinus nevadensis
Taylor
1982-5-29
Taylor 4567
Lassen
In sage brush scrub along dirt rd parallelling hwy. 395, On its e side, ca 1/2 Mi n of hwy. 395 Jct with scott rd, ca 20 mi n of reno. With castilleja.
Comment
CHSC5288
Lupinus obtusilobus
1944-7-26
Lassen
Juniper Lake.
2055
Comment
SEINET10871085
Lupinus polycarpus
Marcus E. Jones
1897-6-26
Jones s.n.
Lassen
Susanville, perkin's ranch.
1463
Comment
NY747611
Lupinus polyphyllus var. saxosus
H. D. D. Ripley
1944-5-30
5982
Lassen
2 miles south of Madeline
1707
Comment
HSC28314
Lupinus sellulus var. lobbii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19159
Lassen
3 mi. N of Westwood
Comment
SEINET7949966
Lycopus asper
T. L. Breene, H. Sampson
1937-1
56
Lassen
Honey Lake Valley.
Comment
HSC95306
Lycopus uniflorus
Gordon Leppig, Juli Neander, Kai Neander
1997-7-25
681
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
JEPS127348
Lythrum hyssopifolia
Lowell Ahart, John Dittes
2016-7-13
21125
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
JEPS121287
Lythrum tribracteatum
Lowell Ahart, John Dittes
2013-7-23
18902
Lassen
About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
CAS-BOT-BC342658
Madia citriodora
G. Schoolcraft
1989-6-5
1897
Lassen
Intersection of Hwy. 139 & A2 south of Adin
Comment
CAS-BOT-BC342656
Madia citriodora
David D. Keck; J. Clausen
1935-6-25
3761
Lassen
Susanville
1300
Comment
CHSC30624
Madia elegans
E. C. Taylor
1975-7-19
73
Lassen
Ca. 30 yds nw of ELFS Vesta Holt Hall.
1584
Comment
CHSC4904
Madia elegans
Bill Wilson
1967-7-15
163
Lassen
Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building.
1584
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
CHSC29911
Madia glomerata
Robin L. Ondricek
1978-8-26
126
Lassen
At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139.
1493
Comment
CAS-BOT-BC334688
Madia glomerata
David D. Keck
1930-7-23
955
Lassen
Fifteen miles west of Susan ville, Sierra Nevada
1524
Comment
CAS-BOT-BC334689
Madia glomerata
David D. Keck
1930-7-23
955
Lassen
Fifteen miles west of Susan ville, Sierra Nevada
1524
Comment
CAS-BOT-BC343056
Madia gracilis
John Thomas Howell
1973-7-10
49781
Lassen
Fredonyer Pass
1737
Comment
CAS-BOT-BC343058
Madia gracilis
John Thomas Howell
1973-7-10
49781
Lassen
Fredonyer Pass
1737
Comment
CAS-BOT-BC343059
Madia gracilis
John Thomas Howell
1974-7-10
50552
Lassen
Elysian Valley
1325
Comment
JEPS117590
Madia gracilis
Lowell Ahart, John Dittes
2010-7-31
17006
Lassen
Dry meadow on the bottom of a small wash, 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
Comment
JEPS88244
Madia gracilis
Vernon H. Oswald and Lowell Ahart
1996-6-17
7783
Lassen
bank on n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (trail accessed at Devil's Corral Trailhead located off Hwy, ca. 7 mi w of Susanville); Modoc Plateau
1432
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
CAS-BOT-BC512876
Maianthemum stellatum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49421
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC512878
Maianthemum stellatum
Louella Bass
1973-6-17
120
Lassen
Elysian Valley
1325
Comment
CAS-BOT-BC512879
Maianthemum stellatum
Louella Bass
1973-5-25
37
Lassen
Elysian Valley
1325
Comment
CHSC12436
Malacothrix
Robert W. Severin
1969-6-25
19
Lassen
Murrer's Upper Meadow, 2 mi es e of E.L.B.S. Near west side of meadow.
1584
Comment
RSA164326
Malacothrix floccifera
Clare B. Hardham
1961-6-16
7491
Lassen
Gold Run Creek south of Susanville.
Comment
UC1523757
Malacothrix floccifera
Gary Schoolcraft
1983-7-6
1068
Lassen
w of Susanville (n of Gold Run Road)
1463
Comment
CAS-BOT-BC347439
Malacothrix floccifera
Louella Bass
1974-7-1
EV 153
Lassen
Elysian Valley
1325
Comment
CHSC12430
Malva neglecta
Robert W. Severin
1969-6-25
18
Lassen
1 3/4 mi e E.L.B.S. along road to Murrer's Upper Meadow, 1/2 mi from road to station.
1584
Comment
JEPS121255
Malva neglecta
Lowell Ahart, John Dittes
2013-7-22
18877
Lassen
E of drainage, 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
CHSC106353
Marrubium vulgare
Lowell Ahart; John Dittes
2010-8-30
17087
Lassen
On the north side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley.
1274
Comment
UC1192360
Marsilea
Verne Grant and Irving Schneider
1947-7-31
8219
Lassen
irrigation ditch running sw into State Fish and Game nesting area on w end Section 19 Madeline Plain
Comment
CHSC4807
Marsilea vestita
R. Carter
1967-7-7
579
Lassen
Deans Meadow, 6.3 mi S of Eagle Lake Biology Station.
1828
Comment
CHSC6212
Marsilea vestita
J. B. Kimsey
1946-6-24
Lassen
Pine Creek, Eagle Lake.
1584
Comment
CHSC65287
Marsilea vestita subsp. vestita
Vernon H. Oswald; Lowell Ahart
1995-8-14
7201
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) at BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville.
1737
Comment
JEPS93831
Matricaria discoidea
Vernon H. Oswald and Lowell Ahart
1998-6-4
9138
Lassen
Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road
1365
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
CHSC36282
Matricaria occidentalis
M. S. Taylor
1982-6-12
4651
Lassen
Alkali flats in Hartson Lake Refuge, ca. 1 mi n of Hartson lake on n side of Honey Lake, ca. 13 mi se of Susanville.
1222
Comment
JEPS85745
Melica bulbosa
Roy E. Buck and Robert A. Price
1988-6-26
1033
Lassen
ca 0.5 air km n Fredonyer Peak main summit (on a subsidiary peak, ca 30 air km nne of Susanville); Fredonyer Peak
2377
Comment
UCD86379
Melica bulbosa
L. Whitney
1935-7-11
3226
Lassen
Camp 10, Fruit Grower's Supply Company. Lassen National Forest.
Comment
UC1024648
Melica stricta
Leo Whitney
1933-8-3
2206
Lassen
ca 8 mi nw Eagle Lake (Slate Creek); Lassen National Forest, Slate Creek
1920
Comment
CHSC106171
Mentzelia albicaulis
Lowell Ahart; John Dittes
2010-8-30
17089
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
SD130461
Mentzelia albicaulis
John Thomas Howell
8-9 Jul 1974
50466
Lassen
Susanville
Comment
JEPS107445
Mentzelia congesta
Lowell Ahart, John Dittes
2005-6-1
11887
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
CHSC117298
Mentzelia dispersa
Lowell Ahart; John Dittes
2016-7-13
21124
Lassen
Sides of the overflow, about 50 yards north of the dam, 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.
1289
Comment
CHSC13851
Mentzelia dispersa
J. Grove
1973-7-30
Lassen
At Sugar Pine Basin.
1524
Comment
JEPS107292
Mentzelia dispersa
Lowell Ahart, John Dittes
2005-6-1
11872
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
JEPS88213
Mentzelia dispersa
Vernon H. Oswald and Lowell Ahart
1996-6-17
7772
Lassen
Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville
1432
Comment
JEPS124811
Mentzelia laevicaulis
J. Yamanaka
1965-7-12
120
Lassen
Highway 395, 15 miles N. of junction of Calif. 104 US 395.
Comment
UCR73830
Mentzelia montana
G. L. Webster
1989-5-13
7705
Lassen
2.5 mi. east of Beckworth Pass
1500
Comment
CHSC7719
Mertensia ciliata var. stomatechoides
Clarence Ash
1969-5-21
2
Lassen
Diamond Mountain, distance from Susanville undetermined.
1828
Comment
CAS-BOT-BC231081
Mertensia oblongifolia
Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm
1986-5-14
86- 39 -1
Lassen
1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale
1706
Comment
CHSC61178
Micranthes aprica
Vernon H. Oswald; Lowell Ahart
1993-5-12
5373
Lassen
SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in the forest.
1737
Comment
CHSC96720
Micranthes oregana
Gordon Leppig; T. LaBanca, L. Arguello
1997-6-28
506
Lassen
Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex.
1970
Comment
SEINET5345127
Micromonolepis pusilla
A. Tiehm
1980-1
5757
Lassen
North end of Honey Lake Valley, 2 air miles NW of Wendel
1231
Comment
UC1136772
Microseris laciniata subsp. laciniata
George A. Fischer and Irwin H. Johnson
1933-7-12
F- 195
Lassen
Grass Valley (Dry Lake) Lassen National Forest
1694
Comment
CHSC66235
Microseris nutans
Vernon H. Oswald; Lowell Ahart
1996-6-24
7866 .1
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow ca. 0.2 mi S of the cabins.
1633
Comment
CAS-BOT-BC349302
Microseris nutans
G. Schoolcraft
1993-6-29
2317
Lassen
Ash Valley, 16 mi E. of Adin
1554
Comment
CHSC99150
Microsteris gracilis
Lowell Ahart; John Dittes
2008-6-20
14929
Lassen
Around vernal pools, 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
JEPS120864
Microsteris gracilis
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18741
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
RSA122927
Microsteris gracilis subsp. gracilis
Anonymous
1936-5-7
S- 343
Lassen
Lassen National Forest, MDM, Burgess Spr. Exp. 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
NY963937
Microsteris gracilis var. humilior
V. E. Grant
1956-5-18
9802
Lassen
About 8 miles south of Madeline
1280
Comment
UC1037226
Mimulus breweri
Leo Whitney
1933-8-14
1596 a
Lassen
ca. 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek
1920
Comment
JEPS126529
Mimulus guttatus
Lowell Ahart, John Dittes
2016-6-7
21009
Lassen
About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber.
Comment
UC27028
Mimulus guttatus
Mrs. C. C. Bruce
June 1898
2276
Lassen
Shumway
Comment
UC526139
Mimulus guttatus
John Thomas Howell
1934-7-9
12518
Lassen
Bridge Creek Spring
Comment
UC725552
Mimulus microphyllus
A. A. Heller
1941-6-26
16232
Lassen
ridge w Nieubieber
Comment
UC699729
Mimulus moniliformis
Farris Farris
1936-6-10
Lassen
Diamond Mountain
1828
Comment
HSC20714
Mimulus moschatus
M. T. Milligan
1964-7-16
132
Lassen
2 mi. W on the Silver Lake Rd., along Upper Susan River.
1829
Comment
POM126736A
Mimulus nanus var. nanus
Milo S. Baker
1890-1
s.n.
Lassen
Milford. Honey Lake Valley.
Comment
RSA536401
Mimulus nanus var. nanus
Beth Corbin, Kim Earll, Steve Klukkert
1991-6-18
628
Lassen
Grays Valley, ca. 4 mi NW of USFS Bogard Work Center.
1715
Comment
UC1025076
Mimulus primuloides
Leo Whitney
1933-8-14
1595
Lassen
meadow near Slate Creek (ca 8 mi nw of Eagle Lake); Lassen National Forest
1920
Comment
UC726696
Mimulus pulsiferae
A. A. Heller
1938-6-22
15187
Lassen
one mi e Westwood
1524
Comment
UC1523779
Minuartia douglasii
Gary Schoolcraft
1981-6-9
440
Lassen
s Pittville
1249
Comment
CHSC13637
Monardella odoratissima
M. S. Taylor
1974-7-3
275
Lassen
Abundant along roadsides ca. 5 mi s of Eagle Lake and Gallatin Beach.
1524
Comment
CHSC52767
Monardella odoratissima subsp. glauca
L. P. Janeway
1990-7-4
3771 A
Lassen
Ca 0.9 mi NE of Meadowview Peak.
1981
Comment
UC1037268
Monardella odoratissima subsp. glauca
Leo Whitney
1934-7-4
1783
Lassen
3 miles northwest of Eagle Lake; Lassen National Forest
1584
Comment
CAS-BOT-BC222148
Monardella odoratissima subsp. pallida
Geo. A. Fisher
1928-6-12
27
Lassen
Lassen National Forest
1615
Comment
CHSC23511
Monardella odoratissima subsp. pallida
Wayne O. Baum
1971-7-12
71 -69
Lassen
E. slope of Gallatin Peak.
2011
Comment
CAS-BOT-BC222146
Monardella odoratissima subsp. pallida
A. E. Anderson
1967-7-13
92
Lassen
Eastern slope of Dean's Ridge, 0.6 mi. s of Five Corners on road to Gallatin Beach
1676
Comment
UC1136460
Monolepis nuttalliana
A. Simontacchi
1940-6-8
843
Lassen
Halls Flat Ranger Station Lassen Nat'l Forest, Halls Flat Quad., Halls Flat Ranger Sta
Comment
POM103154
Monolepis spathulata
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1524
Comment
CAS-BOT-BC444692
Montia chamissoi
John Thomas Howell
1934-6-14
s.n.
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
CAS-BOT-BC444693
Montia chamissoi
Lassen 1927 G. S. Crew
1927-6-25
25
Lassen
Lassen National Forest. Norval Flat
2051
Comment
CHSC64849
Montia chamissoi
Vernon H. Oswald
1995-6-26
6924
Lassen
Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally bundant in shallow water in a rocky, roadside streamlet.
1712
Comment
POM312351
Montia chamissoi
Malcolm A. Nobs, S. Galen Smith
1949-7-21
1064
Lassen
Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline
Comment
RSA0011459
Montia chamissoi
R. F. Thorne, Larry E. DeBuhr
1975-8-22
46979
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line.
1616
Comment
CHSC77226
Montia fontana
G. Schoolcraft
1995-5-16
2478
Lassen
2 mi. east of Bull Flat. Growing in spring.
1615
Comment
CAS-BOT-BC445065
Montia linearis
Louella Bass
1973-5-29
55
Lassen
Elysian Valley.
1325
Comment
CHSC99533
Montia linearis
Lowell Ahart; John Dittes
2008-6-20
14938
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 miles (air) northeast of Bieber.
1263
Comment
NY497780
Montia linearis
N. H. Holmgren
1978-6-11
8915
Lassen
Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance.
1680
Comment
OBI77069
Montia linearis
Anthony Baniaga
2011-6-7
314
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
RSA0035909
Montia linearis
Lowell A. Ahart, John Dittes
2008-6-20
14938
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 miles (air) northeast of Bieber.
1263
Comment
CAS-BOT-BC445066
Montia linearis
Louella Bass
1973-4-23
27
Lassen
Elysian Valley.
1325
Comment
CHSC44580
Muhlenbergia asperifolia
Lowell Ahart; John Thomas Howell
1974-7-9
519
Lassen
In a meadow along the south shore of Eagle Lake.
1584
Comment
CAS-BOT-BC260595
Muhlenbergia filiformis
G. Schoolcraft
1997-7-30
2623
Lassen
W slope of Diamond Mountain
1889
Comment
CAS-BOT-BC260596
Muhlenbergia filiformis
George W. Gillett
1957-7-28
940
Lassen
Lassen Volcanic National Park. Near W end of Widow Lake
2072
Comment
CAS-BOT-BC260598
Muhlenbergia filiformis
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49495
Lassen
Elysian Valley, W of Janesville
1325
Comment
UCD86722
Muhlenbergia filiformis
L. Whitney
1933-8-15
s.n.
Lassen
Meadow near Sheepshead.
1889
Comment
RSA268991
Muhlenbergia richardsonis
J. R. Reeder, C. G. Reeder
1972-7-24
5812
Lassen
Lassen National Forest; 17 miles NW of Susanville, along Hwy 44
1128
Comment
UCD86950
Muhlenbergia richardsonis
R. M. Love
1940-7-5
s.n.
Lassen
Madeline Plains.
Comment
UCD86987
Muhlenbergia richardsonis
L. Whitney
1933-8-3
3042
Lassen
Slate Creek. 8 miles northwest of Eagle Lake, Lassen National Forest.
1920
Comment
CHSC57215
Muilla transmontana
Mary Meyer
1980-5-20
523
Lassen
On mesa 1 mi due east of BLM campground and spring, north of Snowstorm Mountain.
1645
Comment
RSA377621
Muilla transmontana
Christopher Davidson
1975-6-7
2762
Lassen
1 mile E of Beckwourth Pass on Hwy 70.
1524
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
UC1924589
Myosurus apetalus
Debra Valov
2006-5-29
2006019
Lassen
Bieber California, Lassen Co., Bieber; off County A2 c. 8 km east of Hwy 299
1271
Comment
NY492651
Myosurus apetalus var. montanus
N. H. Holmgren
1978-6-11
8913
Lassen
Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance
1680
Comment
UC9325
Myosurus minimus
M. S. Baker and Frank Nutting
1894-7-1
Lassen
w side Dixey Mts
Comment
UC1101499
Myriophyllum sibiricum
Verne Grant and Irving Schneider
1947-7-30
8195
Lassen
W end of Tule Lake.
Comment Read comments Aug 12 2008
POM312396
Myriophyllum sibiricum
S. Galen Smith, Malcolm A. Nobs
1949-7-20
1049
Lassen
4 miles west of Adin.
Comment
JEPS79141
Nama aretioides var. multiflora
L. R. Heckard with R. Bacigalupi
1980-6-11
5243
Lassen
11.3 mi n Litchfield (along U.S. 395 s of Deep Creek crossing); s of Deep Creek crossing, n of Litchfield
1463
Comment
CDA40304
Nama aretioides var. multiflora
S. E. Piper
1943-7-2
s.n.
Lassen
0.5 mile east of Herlong.
0
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
SEINET5624608
Nasturtium officinale
L. E. Ray
1967-1
29
Lassen
ca. 3.5 mi SE ELBS Upper Murrer Meadow
1524
Comment
CHSC9067
Navarretia
Silas Carr
1970-6-24
126
Lassen
E. edge of road entering N. portion of Murrers Meadow.
Comment
SD3921
Navarretia breweri
T. S. Brandegee
1892-7-1
Lassen
Susanville
Comment
UC773905
Navarretia breweri
L. R. Short and J. Warren
1936-6-5
S- 374
Lassen
Burgess Spring Experiment Range Lassen Forest
1798
Comment
SJSU8608
Navarretia breweri
P. L. Billings
1965-7-12
Lassen
by Hwy 139 5 mi NE of Susanville
1158
Comment
UC449789
Navarretia capillaris
Franklin P. Nutting
1894-7-9
Lassen
Pine Creek
Comment
CHSC6208
Navarretia divaricata
W. Vinyard
1946-6-12
Lassen
Eagle Lake. Willow Creek.
1371
Comment
UC1124159
Navarretia divaricata
A. Simontacchi
1940-5-28
777
Lassen
3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad.
1767
Comment
UCR119029
Navarretia intertexta
Beecher Crampton
1954-7-6
2072
Lassen
Modoc Plateau, 17 miles south of Ravendale along US highway 395.
1524
Comment
JEPS127278
Navarretia intertexta subsp. intertexta
Lowell Ahart, John Dittes
2016-7-13
21131
Lassen
90 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
UCD37480
Navarretia intertexta subsp. propinqua
Beecher Crampton
1960-6-20
5731
Lassen
Lassen County, Lassen National Forest, 0.5 mile south of Black's Mountain USDA and Forest Service Experimental Station, 11 miles northwest of Bogard Ranger Station.
1706
Comment
UC909095
Navarretia intertexta subsp. propinqua
G. L. Stebbins Jr.
1949-8-6
4001
Lassen
nw of Susanville; Hog Flat
1676
Comment
JEPS19812
Navarretia leucocephala
Rimo Bacigalupi with S. Galen Smith
1957-6-28
6002
Lassen
3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains
1615
Comment
CHSC66253
Navarretia leucocephala subsp. minima
Vernon H. Oswald; Lowell Ahart
1996-6-24
7847
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins.
1633
Comment
UC1112253
Navarretia leucocephala subsp. minima
R. C. Bacigalupi with S. Galen Smith
1957-6-28
6001
Lassen
3.1 mi s Madeline (Highway 395); Madeline Plains
1615
Comment
UC1191630
Navarretia leucocephala subsp. minima
Malcolm A. Nobs and S. Galen Smith
1949-5-29
756
Lassen
Nubieber, on the Great Northern Railway Nubieber
Comment
UC909067
Navarretia leucocephala subsp. minima
G. L. Stebbins Jr.
1949-8-6
4003 c
Lassen
between Susanville and McArthur (edge of Feather Lake); Feather Lake
1676
Comment Read comments Oct 17 2009
UC1184061
Navarretia linearifolia subsp. linearifolia
Jean Langenheim
1957-6-22
4368
Lassen
Said Valley Said Valley (northeastern part Lassen County)
Comment
JEPS120028
Navarretia propinqua
Lowell Ahart, John Dittes
2012-7-9
18303
Lassen
About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
JEPS107402
Nemophila parviflora var. austiniae
Lowell Ahart, John Dittes
2005-6-1
11898
Lassen
On the south 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
RSA38472
Nemophila parviflora var. austiniae
P. A. Munz
1947-5-18
11860
Lassen
Fredonyer Forestry Public Camp Ground. W of Susanville.
1509
Comment
CHSC107325
Nemophila pedunculata
Lowell Ahart; John Dittes
2011-6-20
17481
Lassen
On old gopher mounds, meadow, 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
UC606930
Nemophila pedunculata
L. Constance
1938-6-10
2323
Lassen
2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); sw of Fredonyer Pass, McKenzie Meadows
1524
Comment
HSC30192
Nemophila spatulata
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19156
Lassen
3 mi. N of Westwood
Comment
PASA2124
Nemophila spatulata
Margaret Stason
1932-6-21
439
Lassen
Devil's Kitchen, Lassen National Park
Comment
HSC22942
Nicotiana acuminata
John Pratt
1970-6-27
46
Lassen
0.5 mi. E of Turtle Head
1220
Comment
UC7442
Nitrophila occidentalis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3326
Lassen
Honey Lake Valley
1219
Comment
JEPS94115
Nothocalais troximoides
Vernon H. Oswald and Lowell Ahart
1998-5-22
9097
Lassen
ca. 3 mi. n. Doyle (Hackstaff Rd. 1.0 mi. s. of Laver Crossing Rd., 0.2 mi. n. of Fort Sage Rd.)
1316
Comment
CDA20352
Oenothera alyssoides var. villosa
D. Tillotson
1942-6-1
s.n.
Lassen
Modoc Plateau; Mud Flat Grade.
0
Comment
HSC16519
Oenothera californica
R. G. Means
1962-7-4
64
Lassen
10 mi. N of Doyle, Hwy. 395
1220
Comment
JEPS124824
Oenothera deltoides
B. Wenegrat
1969-7-8
52
Lassen
off H. 395 8 miles S of Milford.
Comment
UC1584022
Oenothera deltoides subsp. cognata
G. Schoolcraft
1990-6-12
2086
Lassen
about 17 mi e Ravendale; Pine Dunes RNA
1706
Comment
SEINET5345661
Oenothera deltoides var. piperi
M. J. Williams
1968-6-1
s.n.
Lassen
Near Doyle
1372
Comment
SEINET5345714
Oenothera deltoides var. piperi
P. B. Kennedy
1901-6-10
s.n.
Lassen
R.R. Station, Constantia
Comment
UC1562804
Oenothera elata subsp. hookeri
Barbara Ertter
1987-7-24
7304
Lassen
ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved rd)
1524
Comment
CDA18274
Onobrychis viciifolia
G. D. Barbe
1974-8-2
1940
Lassen
Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70.
1524
Comment
CAS-BOT-BC350040
Oreostemma alpigenum var. andersonii
M. S. Jussel
1931-9-7
s.n.
Lassen
Bumpas Hell Trail, Mt. Lassen
2133
Comment
CAS-BOT-BC350045
Oreostemma alpigenum var. andersonii
Alice Eastwood
1912-8-22
1899
Lassen
Battle Creek Meadow, Lassen Butte Region
Comment
CAS-BOT-BC350046
Oreostemma alpigenum var. andersonii
John Thomas Howell
1934-7-9
12515
Lassen
Bridges Creek Spring
Comment
JEPS31991
Oreostemma alpigenum var. andersonii
Duncan Dunning
1921-8-15
Lassen
above Westwood
Comment
UCD134723
Oreostemma alpigenum var. andersonii
Ratliff
1966-7-15
9
Lassen
Lassen Forest. Lower Pine Creek - PLDT 49.
1676
Comment
JEPS26569
Orobanche corymbosa subsp. corymbosa
Lauramay T. Dempster
1961-6-17
1676
Lassen
About 8 miles north of Karlo Road junction with Highway 395.
Comment
SEINET10935676
Orobanche uniflora
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 2594
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
HSC24668
Orobanche vallicola
John Pratt
1970-7-5
64
Lassen
1250
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
UC125352
Oxytheca dendroidea subsp. dendroidea
T. S. Brandegee
1892-6-22
Lassen
Honey Lake
Comment
UC1561831
Packera cana
Barbara Ertter with Gary Schoolcraft
1987-6-16
7194
Lassen
Honey Lake Skeedaddle Mountains, Hot Springs Peak (ne side, saddle on e side of peak)
2194
Comment
HSC42421
Packera eurycephala
Barbara Kelly
1977-8-8
548
Lassen
Ash Creek Campground
Comment
CAS-BOT-BC316858
Packera eurycephala var. eurycephala
C. C. (Mrs.) Bruce
1898-6-1
2176
Lassen
Shumway
Comment
UC1037307
Packera pauciflora
Leo Whitney
1934-7-24
1583
Lassen
7-8 mi sw of Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest, Bridge Creek Camp
1737
Comment
UC485217
Packera streptanthifolia
Mrs. Austin
1892-6-26
Lassen
Milford
Comment
UC485769
Paeonia brownii
H. E. and S. T. Parks
June, 1928
223
Lassen
Drakesbad Lassen National Park
Comment
SEINET10537856
Paeonia brownii
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 2604
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
NY1092251
Panicum capillare
A. Tiehm
1980-5-29
5759
Lassen
Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel.
1220
Comment
SEINET4691127
Panicum capillare
A. Tiehm
1980-1
5759
Lassen
Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel
1220
Comment
CAS-BOT-BC259612
Pascopyrum smithii
James Jokerst
1983-7-25
1898
Lassen
Near Madeline Plains
1614
Comment
CDA5491
Pastinaca sativa
T. C. Fuller
1959-7-7
2793
Lassen
North of Cornell Street, west of Foss Street, Susanville.
0
Comment
NY90883
Pedicularis attollens subsp. protogyna
F. W. Pennell
1940-6-10
25771
Lassen
Route 36. Road to Coppervale R. S., E of Westwood.
Comment
POM44032
Pedicularis semibarbata
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
SD6613
Pedicularis semibarbata
Mrs. R. M. Austin
1880-1
Lassen
Dutch Hill
Comment
JEPS27949
Penstemon davidsonii var. davidsonii
Frances D. Payne
1929-7-12
82
Lassen
above Camp 1, N of Lost Lake Warner Range, E slope of southern end
2286
Comment
CHSC80281
Penstemon deustus
Jeanne Boze
1981-6-12
119
Lassen
0.25 mi south of Eagle Lake Field Station.
1615
Comment
HSC68837
Penstemon deustus
Gary Schoolcraft
1979-6-26
97
Lassen
Small peak N of Radeo Flat
1951
Comment
POM203059
Penstemon deustus subsp. sudans
J. T. Howell
1934-6-10
11880
Lassen
12 miles N of Susanville, on road to Horse Lake.
Comment
CHSC5900
Penstemon deustus var. pedicellatus
W. Vinyard
1946-6-10
Lassen
Eagle Lake. Pelican Point.
1554
Comment
CHSC93676
Penstemon deustus var. pedicellatus
Lowell Ahart; John Dittes
2005-6-2
11979
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
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
CHSC25147
Penstemon gracilentus
B. Anthony
1967-7-10
263
Lassen
Deans Meadow, 6.8 mi from Eagle Lake Biological Station.
1920
Comment
CHSC68880
Penstemon gracilentus
Vernon Oswald; Lowell Ahart
1997-6-24
8589
Lassen
South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10).
1685
Comment
JEPS11268
Penstemon gracilentus
Brown and Wieslander
1922-7-25
5
Lassen
Martin Sprs , Martin Sprs (Eagle Lake)
Comment
UC1137680
Penstemon gracilentus
George A. Fischer, Irwin H. Johnson
1933-7-14
F 254
Lassen
Lassen National Forest
1783
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
NY600697
Penstemon gracilentus
K. A. Vincent
1986-7-19
4382
Lassen
Sierra Nevada, Roop Mountain; along CA A1 at Eagle Lake Summit, ca. 7.6 miles north of junction CA 36, ca. 7 air miles northwest of Susanville.
1932.4
Comment
NY627271
Penstemon neotericus
D. D. Keck
1930-7-23
957
Lassen
2 miles east of Westwood
1493.5
Comment
POM252804
Penstemon neotericus
A. A. Heller
1938-7-28
15294
Lassen
West of Westwood.
Comment
SBBG28836
Penstemon neotericus
A. A. Heller
1939-7-28
15294
Lassen
W of Westwood
1524
Comment
UC1036203
Penstemon neotericus
George W. Gillett
1953-7-13
272
Lassen
Westwood Junction Highway 36 , Westwood Junction (Lassen National Forest)
1562
Comment
UC725482
Penstemon neotericus
A. A. Heller
1938-7-28
15294
Lassen
w Westwood; w of Westwood
1524
Comment
SEINET5329199
Penstemon neotericus
J. T. Howell
1973-7-10
49758
Lassen
near Westwood
1554
Comment
POM172676
Penstemon newberryi subsp. newberryi
Franklin Nutting
1894-7-30
s.n.
Lassen
Silver Lake.
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
CHSC118789
Penstemon roezlii
L. P. Janeway; B. Castro
2015-6-5
11757
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
CHSC59571
Penstemon roezlii
Mary Meyer
1980-5-20
524
Lassen
Along ridge above Secret Creek.
1432
Comment
CHSC66407
Penstemon roezlii
Vernon H. Oswald; Lowell Ahart
1996-6-17
7785
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants along the trail on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River.
1432
Comment
NY650094
Penstemon roezlii
N. H. Holmgren
1978-6-11
8920
Lassen
Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance.
1680
Comment
POM44786
Penstemon roezlii
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CDA41987
Penstemon roezlii
T. C. Fuller
1963-6-1
10633
Lassen
East side of road to Hall s Flat, 9.4 miles south of Pittville.
0
Comment
NY650103
Penstemon roezlii
J. T. Howell
1974-7-30
50689
Lassen
Slope south and southeast of Diamond Mountain
2225.0
Comment
CAS-BOT-BC239495
Penstemon rydbergii var. oreocharis
Leland S. Smith
1927-7-1
49
Lassen
Lassen National Forest, at Bogard Ranger Station
Comment
CAS-BOT-BC239496
Penstemon rydbergii var. oreocharis
E. K. Balls
1950-5-22
14830
Lassen
.5 mi. north of turnoff to Heir [Herlong], Hwy 395, between Milford and Doyle
1280
Comment
CAS-BOT-BC239498
Penstemon rydbergii var. oreocharis
John Thomas Howell
1976-7-20
s.n.
Lassen
Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass
1432
Comment
CAS-BOT-BC239499
Penstemon rydbergii var. oreocharis
Francis W. Pennell
1940-6-10
25774
Lassen
Route 36, road to Coppervale R.S., E. of Westwood
1493
Comment
CAS-BOT-BC239503
Penstemon rydbergii var. oreocharis
B. C. Cain
1925-8-24
88
Lassen
1 mi. below Drakesbad, Mt. Lassen Nat. Park
1645
Comment
CHSC12483
Penstemon rydbergii var. oreocharis
Carol Weld
1969-6-20
15
Lassen
Dean's Meadow.
1950
Comment
CHSC13645
Penstemon rydbergii var. oreocharis
M. S. Taylor
1974-6-25
287
Lassen
Abundant in meadow ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville.
1524
Comment
CHSC30583
Penstemon rydbergii var. oreocharis
Leonard Walk
1972-6-29
48
Lassen
Dean's Meadow on S. side of pond.
1981
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
NY650948
Penstemon rydbergii var. oreocharis
H. D. D. Ripley
1943-6-13
5706
Lassen
8 miles south of Milford
1859.3
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
UC696713
Penstemon rydbergii var. oreocharis
A. A. Heller
1938-6-23
15193
Lassen
about 4 mi e Westwood; e of Westwood
1432
Comment
CHSC37347
Penstemon speciosus
J. D. Prouty
1978-7-10
20
Lassen
Roadcut, W slope Dean's Ridge, S of Eagle L.
1889
Comment
HSC81485
Penstemon speciosus
Thomas W. Nelson, Jane Nelson
1980-7-6
6018
Lassen
Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir.
1585
Comment
JEPS89101
Penstemon speciosus
Jos. Grinnell
1928-6-16
Lassen
Eagle Lake
1584
Comment
RSA121810
Penstemon speciosus
L. R. Short, J. Warren
1936-6-26
S- 357
Lassen
Burges Spr. Exp. Range.
1845
Comment
UC1527430
Penstemon speciosus
Gordon H. True Jr.
1936-6-25
529
Lassen
e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station
1767
Comment
UC423512
Penstemon speciosus
David D. Keck
1930-7-23
947
Lassen
Reno Junction Sierra Nevada, Reno Junction (southeastern Lassen County)
1493
Comment
UCR183192
Penstemon speciosus
Jim Andre, G. L. Clifton
1993-5-28
7713
Lassen
Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn
1349
Comment
NY660841
Penstemon speciosus
F. W. Pennell
1940-7-23
26254
Lassen
Route 395, 2 miles north of junction with route #24, northeast of Plumas
1524.0
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-BC239666
Penstemon sudans
John Thomas Howell
1974-7-9
50479
Lassen
Between Susanville and SW end of Eagle Lake
1828
Comment
CAS-BOT-BC243407
Penstemon sudans
A. A. Heller
1938-6-23
15194
Lassen
Slope 2 mile seast of Fredonyer Pass
1645
Comment
CHSC68885
Penstemon sudans
Vernon Oswald; Lowell Ahart
1997-6-24
8599
Lassen
South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10).
1685
Comment
JEPS94561
Penstemon sudans
Vernon Oswald and Lowell Ahart
1997-6-24
8599
Lassen
on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn.
1685
Comment
NY661798
Penstemon sudans
F. W. Pennell
1940-6-9
25768
Lassen
Route 36. Hill, west of Susanville
1371.6
Comment
NY661802
Penstemon sudans
W. W. Eggleston
1911-7-7
7177
Lassen
Secret Valley
1330
Comment
OBI75899
Penstemon sudans
Anthony Baniaga and R. Bomberger, R. Bomberger
2011-7-28
478
Lassen
Lassen Natl Forst. Hwy 36, ca. 1/4 mi E of "Fredonyer Pass Winter OHV Parking Lot" Fredonyer Pass quad T29N R10E sec 2 NW of SW
1950
Comment
UC1012184
Penstemon sudans
Francis W. Pennell
1940-6-9
25768
Lassen
Route 36 hill w Susanville; hill w of Susanville
1371
Comment
UCD55297
Penstemon sudans
Ellen Dean; Gary Schoolcraft
2006-5-16
3118
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
SEINET7356257
Penstemon venustus
Robert L. Johnson, Mikel R. Stevens
2015-7-10
3935
Lassen
E of Freydonyer Pass. 6.2 rd mi west on Hwy 36 after jct with Hwy 44. S side of rd. Ca 11 air mi wsw of Susanville.; 0
1659
Comment
CHSC7723
Peraphyllum ramosissimum
Beverley J. Wise
1969-5-4
193
Lassen
1.5 mi. west of Shaeffer Mtn lookout access road off Hwy 395 (approx. 1 mi. south of Las Co. 338).
1676
Comment
NY850108
Peraphyllum ramosissimum
R. M. Austin
06 1898
2354
Lassen
Comment
RSA594173
Peraphyllum ramosissimum
S. O. Mattoon
1974-6-2
42
Lassen
Cottonwood Mountains: Vicinity of Dodge Res.; Lassen County Road 502.
1829
Comment
RSA59742
Peraphyllum ramosissimum
E. K. Balls
1950-5-19
14789
Lassen
1.6 miles S of Modoc county line, Hwy. 395, between Madeline and Likely.
1463
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
NY1102214
Perideridia bolanderi subsp. bolanderi
G. Schoolcraft
1989-5-31
1889
Lassen
Skedaddle Ranch Rd. about 6 miles north of Wendel Road
1494
Comment
RSA723862
Perideridia bolanderi subsp. bolanderi
David H. French
1968-6-3
2882
Lassen
N of Honey Lake, W side of Highway 395, 7.4 miles NE of Litchfield
Comment
SEINET11153153
Perideridia bolanderi subsp. bolanderi
D. French
1968-6-3
2882
Lassen
N of Honey Lake, W side of Hwy 395, 7.4 miles NE of Litchfield.
Comment
CHSC42653
Perideridia oregana
Vernon Oswald
1986-7-22
2218
Lassen
Hwy 36, 15.0 mi e of the Plumas-Lassen County line, 3.5 mi ne of Freydonyer Pass.
1508
Comment
CAS-BOT-BC423341
Peritoma platycarpa
H. D. Ripley; R. C. Barneby
1943-6-15
5757
Lassen
Nr. Viewland
1310
Comment
CAS-BOT-BC423344
Peritoma platycarpa
Elmer I. Applegate
1934-5-3
8923
Lassen
South of Secret Valley
Comment
HSC23085
Peritoma platycarpa
John Pratt
1970-7-5
63
Lassen
1250
Comment
CAS-BOT-BC419144
Persicaria maculosa
Luella Bass
1980-8-29
s.n.
Lassen
Standish
Comment
RSA75519
Phacelia adenophora
F. W. Peirson
1926-6-24
6851
Lassen
On Madeline Plain.
Comment
SJSU14070
Phacelia adenophora
W. Savage
1964-6-30
337
Lassen
by Hwy 89, 11 mi N of Susanville
Comment
UC1537547
Phacelia adenophora
Gordon H. True Jr.
1938-7-8
905
Lassen
near Termo
1371
Comment
UC614680
Phacelia adenophora
L. Constance
1938-6-11
2329
Lassen
Madeline Plains
1219
Comment
UCR70753
Phacelia adenophora
Arnold Tiehm, Jan Nachlinger
1988-6-2
11701
Lassen
S side of Shaffer Mtn, 3-4 road mi. north of the Wendel Road on Hwy 395 from Susanville to Alturas, west of the highway
1229
Comment
HSC30187
Phacelia hastata
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19262
Lassen
Harvey Valley near Cone Springs
Comment
JEPS118499
Phacelia hastata
A. Holmen
2011-8-23
CA 320 -94
Lassen
South US Hwy 295 to Termo and turn left onto Lassen Co. Rd 508 (Juniper Ridge Rd). Follow this road for 11 miles to Cold Springs Rd and head north for 3.3 miles. Turn left and travel 1.5 miles. Collection site will be to the west heading up draw.
Comment
CHSC93554
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
JEPS107806
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
GMDRC6948
Phacelia hastata subsp. hastata
J. M. Andre, T. La Doux, Senna & Elias Andre
2013-7-12
31421
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
UC773946
Phacelia heterophylla subsp. virgata
L. R. Short
1936-6-30
S- 463
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1816
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
SJSU14069
Phacelia heterophylla subsp. virgata
W. Savage
1964-6-30
335
Lassen
E of Susanville
1310
Comment
CHSC5262
Phacelia humilis
1944-7-9
Lassen
Dow Butte, Eagle Lake.
2042
Comment
JEPS2126
Phacelia humilis
C. S. Robinson
1927-6-25
Lassen
near Westwood Jct. (sw Lassen Co.); Lassen N. F., Norval Flat
1747
Comment
SBBG15797
Phacelia humilis
H. and M. Dearing
1938-6-30
2234
Lassen
20 mi N of Susanville [Hwy 44]
Comment
SEINET5536709
Phacelia humilis
N. H. Holmgren, P. K. Holmgren
1978-6-11
8908
Lassen
Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance.
1680
Comment
UC133065
Phacelia humilis
T. S. Brandegee
1892-6-26
Lassen
Milford
Comment
CHSC68891
Phacelia humilis var. humilis
Vernon H. Oswald; Lowell Ahart
1997-6-24
8620
Lassen
South of susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary.
2036
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
RSA516986
Phacelia humilis var. humilis
Barbara Ertter, Gary Schoolcraft
1987-6-16
7196
Lassen
Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak.
2195
Comment
RSA112694
Phacelia inundata
J. T. Howell
1934-7-8
12510
Lassen
Spaldings Resort; Eagle Lake
Comment
CHSC12442
Phacelia linearis
Robert W. Severin
1969-6-25
33
Lassen
E.L.B.S. 25 feet s of library.
1569
Comment
CHSC5051
Phacelia linearis
L. B. Barlow
1967-6-23
3
Lassen
Vic. Eagle Lake Biological Station, east central side of Eagle Lake.
1554
Comment
CHSC93235
Phacelia linearis
John Dittes; Scott Chamberlain
2004-6-28
1009
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
HSC82245
Phacelia linearis
Thomas W. Nelson, Jane P. Nelson
1980-7-6
5987
Lassen
Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley
1555
Comment
JEPS29742
Phacelia linearis
Rimo Bacigalupi and L. R. Heckard
1962-5-28
8497
Lassen
2.7 mi n of Milford (along U.S. Hwy 395); U.S. Hwy 395
1219
Comment
RSA337277
Phacelia lutea
Noel Holmgren, Patricia K. Holmgren
1980-7-3
9473
Lassen
Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline
1616
Comment
POM203780
Phacelia ramosissima var. eremophila
J. T. Howell
1934-6-10
11873
Lassen
Janesville
Comment
CHSC59552
Phacelia ramosissima var. ramosissima
M> Meyer
1980-7-8
514
Lassen
Amongst rocks (lg.) and junipers on top of Grasshopper Ridge.
1724
Comment
HSC29510
Phacelia thermalis
C. L. Hitchcock
1940-5-26
Lassen
1 mi. W of Bieber, Pitt River
Comment
RSA38633
Phacelia thermalis
P. A. Munz
1947-5-19
11878
Lassen
Highway 395, 4 miles south of Madeline.
Comment
SEINET3091880
Phacelia thermalis
Arnold Tiehm, Raymond Evans, James Young.
1984-6-7
8595
Lassen
Flats on the Northwest side of Shaffer Mountain, 9 air miles North-northwest of Litchfield.
1372
Comment
UC1776695
Phleum pratense
G. Schoolcraft
1994-8-2
2407
Lassen
About 1.5 miles SW of Boot Lake
2011
Comment
CHSC4271
Phlox diffusa
K. R. Stern
1967-6-25
2430
Lassen
On road to Eagle Lake Biological Station, ca. 3 mi. E of Eagle Lake.
1676
Comment
UC2042998
Phlox diffusa
Barbara Ertter
1990-5-13
8964
Lassen
McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood.
Comment
UC1137650
Phlox douglasii subsp. rigida
A. Simontacchi
1940-5-17
744
Lassen
5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quad.
1706
Comment
UC773891
Phlox gracilis
L. R. Short and Wm. Gansberg
1936-6-2
S- 363
Lassen
Burgess Spring Experimental Range Lassen Forest
1859
Comment
UC1567441
Phlox longifolia
G. Schoolcraft
1989-5-16
1878
Lassen
w of Rice Canyon Rd. (at base of Antelope Mtn.); Antelope Mtn.
1280
Comment
RSA469948
Phlox longifolia subsp. brevifolia
Christopher Davidson
1975-6-7
2750
Lassen
1 mile E of Beckwourth Pass on Hwy 70.
1524
Comment
UC1924596
Phlox speciosa
Debra Valov
2006-5-28
2006006
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1305
Comment
UC52648
Phlox speciosa subsp. occidentalis
M. S. Baker and Frank Nutting
1894-7-3
Lassen
Dixie Mts.
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
UC932052
Phlox stansburyi
Verne Grant and Alva Grant
1947-5-5
7979
Lassen
n of Honey Lake Valley
Comment
CHSC48338
Phoenicaulis cheiranthoides
Vernon Oswald
1986-5-28
2061
Lassen
Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville.
1645
Comment
RSA121476
Phoenicaulis cheiranthoides
L. R. Short
1936-4-28
S 335
Lassen
Burgess Spring Experimental Range. Lassen Forest.
1738
Comment
SEINET247771
Phoenicaulis cheiranthoides
Noel H. Holmgren, Patricia K. Holmgren
1980-7-4
9515
Lassen
Observation Peak, near the top of the mountain, 17 km (10.5 mi) air distance east of Ravendale.
2420
Comment
POM94709
Phoenicaulis cheiranthoides
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt. Susanville. Perkin's Ranch.
2226
Comment
UC465863
Phoradendron densum
Milo S. Baker
1900-7-6
Lassen
s. side Dixey Mts.
Comment
CAS-BOT-BC250984
Phragmites australis
G. Schoolcraft
1996-9-11
2581
Lassen
Lower end of Willow Creek near Belfast
1341
Comment
UC1132473
Phragmites australis
H. S. Yates
1936-8-11
6063
Lassen
near Red Rock; Sierraville Quad.
Comment
CAS-BOT-BC58236
Phyllodoce breweri
Ella Dales Cantelow
1941-9-13
3599
Lassen
Mt. Lassen Nat. Park.
Comment
CHSC117194
Pilularia americana
Lowell Ahart; John Dittes
2016-6-7
20973
Lassen
About 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
UC1609393
Pilularia americana
Vernon H. Oswald and Lowell Ahart
1993-7-8
5648
Lassen
near se end Poison Lake (Pittville Rd.(Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi n of Hwy. 44)
1709
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
SEINET10859539
Pinus lambertiana
Paulson
1970-7-21
PAULSON s.n.
Lassen
28N 6 E-19
Comment
SEINET3874938
Pinus washoensis
David A. Charlet
1994-7-6
1924
Lassen
Madelin Mesa foothills above Madeline plains.; 0
1689
Comment
CAS-BOT-BC227994
Plagiobothrys
Ella Dales Cantelow
1941-5-22
3474
Lassen
5 miles W of Susanville, State Highway 36
Comment
CHSC29914
Plagiobothrys cognatus
Robin L. Ondricek
1978-7-5
85
Lassen
Grassy area bordering ne edge of Mahogany Lake.
2057
Comment
SJSU8053
Plagiobothrys cognatus
R. L. Fisher
1958-6-16
Lassen
6 mi S of Madeline
Comment
CHSC112443
Plagiobothrys cusickii
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18772
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
JEPS121292
Plagiobothrys cusickii
Lowell Ahart, John Dittes
2013-7-22
18870
Lassen
10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
RSA0035913
Plagiobothrys cusickii
Lowell A. Ahart, John Dittes
2008-6-20
14914
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
CHSC112431
Plagiobothrys hispidulus
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18776
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
JEPS28658
Plagiobothrys hispidulus
George W. Gillett
1957-7-21
860
Lassen
300 yd n trail summit (Juniper Lake-Cameron Meadow trail); Lassen Volcanic National Park
2118
Comment
JEPS87508
Plagiobothrys hispidus
Vernon H. Oswald and Lowell Ahart
1993-7-8
5655
Lassen
se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake
1709
Comment
JEPS107444
Plagiobothrys kingii var. harknessii
Lowell Ahart, John Dittes
2005-6-1
11891
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
JEPS107963
Plagiobothrys kingii var. harknessii
Lowell Ahart, John Dittes
2005-6-1
11891
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
JEPS118449
Plectritis macrocera
Lowell Ahart, John Dittes
2011-6-20
17494
Lassen
Meadow, about 30 yards east 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
UCD55158
Plectritis macrocera
Ellen Dean
2006-5-15
3046
Lassen
E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility.
1247
Comment
CAS-BOT-BC326713
Pleiacanthus spinosus
Gordon H. True
1973-8-22
7658
Lassen
North shore of Honey Lake ca. 5 miles east of Janesville and just west of Hartson Reservoir
Comment
UC1562342
Pleiacanthus spinosus
Vernon Oswald and Lowell Ahart
1990-7-25
4395
Lassen
2.2 mi w Highway 395 (intersection of Hwy 70 and Scott Rd)
1463
Comment
SEINET10565425
Poa
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17785
Lassen
6 mi N of Hallelujah Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash.
1402
Comment
SACT001821
Poa bulbosa
Herbert Mason
1949-5-29
Lassen
Highway 299. In marsh.
Comment
UCD90699
Poa bulbosa
S. Galen Smith; Malcolm A. Nobs, Herbert L. Mason
1949-5-29
758
Lassen
on Great Northern Railroad, Highway 299, Nubeiber.
Comment
JEPS117621
Poa compressa
Lowell Ahart, John Dittes
2010-7-31
16992
Lassen
On the bottom of a small wash, about 20 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
UC589933
Poa compressa
Leo Whitney
1935-5-26
3147
Lassen
10 mi e Adin (bank of Ash Creek)
Comment Read comments Jun 24 2009
UCD90919
Poa cusickii
Leo Whitney
1935-6-10
3219
Lassen
Camp 10, Fruit Grower's Supply Company, Lassen National Forest.
Comment
JEPS118453
Poa cusickii subsp. epilis
Lowell Ahart, John Dittes
2011-6-20
17507
Lassen
Meadow about 40 yards east of the stream, about 100 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
UC589886
Poa palustris
H. S. Yates
1936-8-12
6079
Lassen
McKenzie Meadow; Susanville Quadrangle
1524
Comment
UC1132873
Poa pratensis subsp. pratensis
Robert W. Gardner
1937-6-18
G- 8
Lassen
Burgess Spring Experimental Range; Halls Flat Quadrangle
Comment
POM203054
Poa secunda
J. T. Howell
1934-7-6
12459
Lassen
Harvey Valley
Comment
SD34480
Poa secunda
A. A. Beetle
1941-6-28
2797
Lassen
10 miles west of Chester, mountain meadow
1524
Comment
SEINET175674
Poa secunda
Marcus E. Jones
1897-6-19
Lassen
Chat, California
1524
Comment
CAS-BOT-BC247052
Poa secunda subsp. juncifolia
Ralph K. Gierisch
1968-7-11
3352
Lassen
Lassen National Forest, Harvey Valley - Dixie Spr.
1706
Comment
CAS-BOT-BC247053
Poa secunda subsp. juncifolia
Marcus E. Jones
1897-6-23
s.n.
Lassen
Amedee
1219
Comment
CAS-BOT-BC251087
Poa secunda subsp. juncifolia
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49460
Lassen
Elysian Valley, west of Janesville
1325
Comment
CHSC100869
Poa secunda subsp. juncifolia
L. P. Janeway
2008-8-2
9529
Lassen
Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line.
1349
Comment
UC1037128
Poa secunda subsp. juncifolia
Leo Whitney
1935-6-19
3259
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UCD18953
Poa secunda subsp. juncifolia
Jack N. Reppert
1965-7-12
28
Lassen
Lassen National Forest, Harvey Valley Allot. (HV 17-11).
1682
Comment
SEINET7855100
Poa secunda subsp. juncifolia
P. B. Kennedy
1901-6-10
s.n.
Lassen
R.R. station, Constantia
Comment
CHSC33317
Poa secunda subsp. secunda
Hank Thompson
1980-4-14
19
Lassen
Ca. 20 mi E of Susanville.
1310
Comment
CHSC91208
Poa secunda subsp. secunda
Lowell Ahart; John Dittes
2005-6-1
11845
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
JEPS107471
Poa secunda subsp. secunda
Lowell Ahart, John Dittes
2005-6-1
11845
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
RSA715613
Poa secunda subsp. secunda
L. Ahart, John Dittes
2005-6-1
11845
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
UC1024836
Poa secunda subsp. secunda
Leo Whitney
1935-6-10
3220
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UC1024933
Poa secunda subsp. secunda
Leo Whitney
1935-6-28
3344
Lassen
Bieber
Comment
UC1567404
Poa secunda subsp. secunda
G. Schoolcraft
1989-7-18
1975
Lassen
near Buck's Spring (s of Clark's Valley Rd)
1874
Comment
UC506987
Poa secunda subsp. secunda
George A. Fischer and Irwin H. Johnson
1933-7-12
F- 219
Lassen
Lassen Nat'l Forest
1722
Comment
UCD91638
Poa secunda subsp. secunda
A. L. Hormay
1941-6-26
37
Lassen
Lassen National Forest. Pine Creek, Bogard Ranger Station.
1706
Comment
UCD92017
Poa secunda subsp. secunda
A. H. Shunk
1923-8-20
s.n.
Lassen
Madeline.
Comment
UC1024807
Poa wheeleri
Leo Whitney
1935-6-23
3286
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
CHSC112409
Polemonium micranthum
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18743
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
JEPS17614
Polemonium occidentale
Rimo Bacigalupi
1955-7-20
5404
Lassen
on grade 2.3 mi s Patterson Ranger Station ([and 0.8 mi s of Lassen-Modoc county line], meadowy spots along East Creek, southern end of the Warner Mountains); Modoc National Forest, Warner Mountains, East Creek
2011
Comment
SD131676
Polyctenium fremontii
Arnold Tiehm, Margaret Williams, Jan Nachlinger
1988-6-2
11703
Lassen
6.6 miles north of the Wendel Road on Highway 395 from Susanville to Alturas.
1349
Comment
SEINET12006546
Polyctenium fremontii
C. C. Parry, Lemmon, J. G.
1878-1
s.n.
Lassen
Madeline Plains
2134
Comment
CHSC4777
Polygonum
R. Carter
1967-6-27
556
Lassen
Ca. 100 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station.
1584
Comment
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
CHSC117541
Polygonum aviculare
Lowell Ahart; John Dittes
2016-7-13
21133
Lassen
20 yards south of the overflow, about 30 yards north of the dam, 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.
1289
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
JEPS31669
Polygonum convolvulus
W. L. Jepson
1939-8-11
19376
Lassen
Milford
1280
Comment
CAS-BOT-BC414490
Polygonum douglasii
John Thomas Howell
1974-7-10
50562
Lassen
Elysian Valley
1325
Comment
RSA104503
Polygonum douglasii
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville
1524
Comment
CHSC105243
Polygonum douglasii subsp. spergulariiforme
Lowell Ahart; John Dittes
2010-7-31
16979
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
CHSC84438
Polygonum douglasii subsp. spergulariiforme
Lowell Ahart
2003-8-17
10515
Lassen
On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville.
1433
Comment
UC773926
Polygonum douglasii subsp. spergulariiforme
L. R. Short
1936-9-30
S- 501
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1767
Comment
CAS-BOT-BC418534
Polygonum minimum
George W. Gillett
1957-7-28
931
Lassen
Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail
1905
Comment
UC1603209
Polygonum polygaloides
J. Guardino
1993-6-9
281 B
Lassen
near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road
1264
Comment
UC1603213
Polygonum polygaloides
J. Guardino
1993-5-22
167
Lassen
near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road
1264
Comment
CAS-BOT-BC419860
Polygonum polygaloides subsp. confertiflorum
Malcom A. Nobs; S. Galen Smith; Herbert L. Mason
1949-5-29
757
Lassen
On Great Northern Railroad, Highway 299, Nubeiber
Comment
JEPS121265
Polygonum polygaloides subsp. confertiflorum
Lowell Ahart, John Dittes
2013-7-23
18905
Lassen
On the NW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
CAS-BOT-BC419859
Polygonum polygaloides subsp. confertiflorum
George W. Gillett
1957-7-22
874
Lassen
Lassen Volcanic National Park. Snag Lake.
1850
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
SBBG128041
Polygonum spergulariiforme
L. Ahart, J. Dittes
2010-7-31
16979
Lassen
ca. 100 yards NE of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin
1520
Comment
CHSC110900
Polypogon monspeliensis
Lowell Ahart; John Dittes
2012-7-9
18300
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles.
1267
Comment
POM107357
Populus trichocarpa
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CHSC66242
Porterella carnosula
Vernon H. Oswald; Lowell Ahart
1996-6-24
7854
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally common on the dry bed of a ditch on the W side of the meadow ca. 0.3 mi S of the cabins.
1633
Comment
JEPS114988
Porterella carnosula
Lowell Ahart, John Dittes
2008-6-20
14963
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
JEPS17746
Porterella carnosula
Rimo Bacigalupi with G. T. Robbins
1955-7-20
5408
Lassen
4.4 mi s Patterson Ranger Station (Long Valley, southern end of Warner Mts., Modoc National Forest); Modoc National Forest, s end of Warner Mts.
2057
Comment
SEINET3795836
Porterella carnosula
Noel H. Holmgren, Patricia K. Holmgren
1980-7-3
9461
Lassen
Madeline plains, along US hwy 395, 5.6 km (3.5 mi) S of Madeline
1615
Comment
SEINET10460760
Porterella carnosula
Eggleston
1927-7-11
EGGLESTON 21476
Lassen
Bogard Ranger Station, Lassen Forest
1500
Comment
SEINET10460827
Porterella carnosula
Hormay
1934-5-14
HORMAY s.n.
Lassen
T32N R9E
1676
Comment
JEPS97315
Potamogeton amplifolius
Vernon H. Oswald
1995-8-26
7218
Lassen
T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely
1859
Comment
CAS-BOT-BC452094
Potamogeton amplifolius
Verne Grant; Irving Schneider
1947-8-24
8269
Lassen
Northwest shore of Blue Lake, Northern Lassen County.
Comment
JEPS109625
Potamogeton diversifolius
Dean W. Taylor
2002-6-21
18177
Lassen
stock pond ca. 1 mile SW of McCleland Reservoir
1584
Comment
UCR228122
Potamogeton diversifolius
R. F. Thorne, Larry E. DeBuhr
1975-8-22
47201
Lassen
Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line
1616
Comment
CAS-BOT-BC452150
Potamogeton diversifolius
R. F. Thorne; Larry E. DeBuhr
1975-8-22
47201
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line.
1616
Comment
UC1100045
Potamogeton foliosus
Malcolm A. Nobs, S. Galen Smith
1949-8-20
1477
Lassen
1 mi n of Doyle (banks of Long Creek); Honey Lake Valley
Comment
POM118979
Potamogeton natans
Marcus E. Jones
1897-6-21
s.n.
Lassen
Chat.
1616
Comment
UC1100078
Potamogeton pectinatus
Verne Grant, Irving Schneider
1947-7-29
8184
Lassen
e end of Tule Lake
Comment
JEPS97316
Potamogeton zosteriformis
Vernon H. Oswald
1995-8-26
7220
Lassen
T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely
1859
Comment
UC60850
Potamogeton zosteriformis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3356
Lassen
near Amedee; Honey Lake Valley
Comment
UC1598197
Potentilla basaltica
G. L. Clifton
1988-7-20
18126
Lassen
near Ash Valley; Likely Quad., near Ash Valley
1541
Comment
CHSC68764
Potentilla biennis
Vernon H. Oswald; Lowell Ahart
1997-5-27
8487
Lassen
East side of Hwy. 139 at a small pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd.
1627
Comment
NY831702
Potentilla biennis
V. E. Grant
1947-7-30
8189
Lassen
South point of west embayment, Tule Lake
Comment
POM312882
Potentilla biennis
Verne Grant
1947-7-30
8189
Lassen
South point of west embayment, Tule Lake.
Comment
CHSC60849
Potentilla glandulosa subsp. ashlandica
Vernon H. Oswald; Lowell Ahart
1993-6-28
5613
Lassen
N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. On the edge of vernal pool.
1798
Comment
POM34025
Potentilla glandulosa subsp. ashlandica
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
CHSC67064
Potentilla gracilis
Willis Ball
1969-6-26
42
Lassen
Found in Papoose Meadows.
1584
Comment
UC1136905
Potentilla gracilis
George A. Fischer and Irwin H. Johnson
1933-7-12
F 208
Lassen
Grass Valley Lassen National Forest, Grass Valley
1700
Comment
CHSC89733
Potentilla gracilis var. fastigiata
L. P. Janeway
2004-6-26
8159
Lassen
High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest.
1767
Comment
JEPS44512
Potentilla gracilis var. fastigiata
Brown and Wieslander
1922-7-30
25
Lassen
Martin Springs , Martin Springs (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
CAS-BOT-BC540362
Potentilla gracilis var. fastigiata
John Thomas Howell
1934-7-6
12440
Lassen
Harvey Valley
Comment
CHSC4889
Potentilla millefolia
L. G. Bennett
1967-7-17
166
Lassen
0.3 mi n of junction of Silver Lake Road and Hwy 44, on Hwy 44.
1975
Comment
CHSC5003
Potentilla millefolia
K. C. Newman
1967-7-14
87
Lassen
Collected in meadow along SH 44 about 15 mi. from the junction of SH 36 going toward Redding.
1828
Comment
CHSC7046
Potentilla millefolia
E. L. Williams
1969-4-28
18
Lassen
Meadow on Highway 32, 58 mi toward Chester.
259
Comment
UC1191492
Potentilla rivalis
Verne Grant, Irving Schneider
1947-8-1
8236
Lassen
e end of Tule Lake
Comment
UC1523752
Prunella vulgaris
Gary Schoolcraft
1981-6-25
482
Lassen
East Fork of Willard Creek
1584
Comment
CAS-BOT-BC159781
Prunus andersonii
Margaret Williams
1974-8-4
74 -L-75
Lassen
Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70
1493
Comment
CDA26124
Prunus andersonii
S. E. Piper
1943-7-14
Lassen
Southwest, south and east edges of Honey Lake Desert. 1 mile east of Herlong.
0
Comment
CHSC118852
Prunus andersonii
L. P. Janeway; B. Castro
2015-6-5
11767
Lassen
Great Basin, Modoc Plateau. Along the road from the south endof Surprise Valley to Tuledad Canyon, 12.1 road-km south of Surprise Valley Road; 1.8 air-km east of Newland Reservoir/Bare Creek.
1959
Comment
CHSC35955
Prunus andersonii
M. S. Taylor
1982-5-7
4424
Lassen
Reno Junction and along old road paralleling Hwy 70 just e of Beckwourth Pass.
1524
Comment
RSA0028244
Prunus andersonii
John F. Emmel
1994-7-18
1335
Lassen
Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle.
1305
Comment
SEINET10542397
Prunus andersonii
Paul Gallian, David B. Dunn
1971-6-2
Gallian 486
Lassen
5 miles s of milford near honey lake on us hwy 395. Along roadside in grass, Artemesia tridentata assoc. Quercus, jeffrey pine on mountain range to w at ca The same altitude
1250
Comment
UCD35732
Prunus emarginata
Beecher Crampton
1960-6-18
5725
Lassen
southern Warner Mtns., vicinity of Blue Lake Ranch.
1981
Comment
HSC63042
Prunus subcordata
J. P. Smith, J. O. Sawyer
1971-5-23
4662
Lassen
Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo
Comment
CHSC6286
Prunus virginiana var. demissa
R. Clicquennoi
1967-7-1
22
Lassen
4 mi s of Eagle Lake Biological Station, on Gallatin Beach Rd.
1554
Comment
UCD113534
Prunus virginiana var. demissa
W. Robert Powell
1985-7-30
3080 c
Lassen
about 3 miles WNW of Susanville on narrow flood plane of Piute Creek.
1402
Comment
CAS-BOT-BC361666
Pseudognaphalium thermale
John Thomas Howell; Gordon H. True
1973-7-31
50022
Lassen
On road from Janesville to Thompson Peak, Diamond Range
1737
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-BC239805
Pseudoroegneria spicata
David D. Keck
1944-7-8
5450
Lassen
1.5 mi. W. of Susanville on rime of plateau overlooking Susan River Canyon
1341
Comment
CAS-BOT-BC239806
Pseudoroegneria spicata
James Moffitt
1941-5-14
s.n.
Lassen
Near Gilman Springs, 6 mi. ssw. of Karlo
1417
Comment
UC1483808
Pseudoroegneria spicata subsp. spicata
P. Bousier
May 1979
Lassen
n of Wendel (ner Brubeck Spring)
1554
Comment
CHSC29919
Pseudostellaria jamesiana
Robin Ondricek
1978-6-27
73
Lassen
On Coleman Lake Rd., 1977 burn area.
1950
Comment
UC120048
Pseudostellaria jamesiana
unknown
1892-7-2
Lassen
Susanville
Comment
CAS-BOT-BC80092
Pseudotsuga menziesii
John Thomas Howell
1976-7-19
51965
Lassen
on Gold Run Creek southwest of Susanville
1386
Comment
RSA0011562
Psilocarphus
R. F. Thorne, Larry E. DeBuhr
1975-8-22
46990
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line.
1616
Comment
CHSC64868
Psilocarphus brevissimus var. brevissimus
Vernon H. Oswald; Lowell Ahart
1995-6-19
6897
Lassen
Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395.
1383
Comment
JEPS121242
Psilocarphus brevissimus var. brevissimus
Lowell Ahart, John Dittes
2013-7-22
18872
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
UC1924584
Psilocarphus brevissimus var. brevissimus
Debra Valov
2006-5-28
2006014
Lassen
Bieber off County Rd A2 c. 8 km east of Hwy 299
1271
Comment
UC35755
Psilocarphus brevissimus var. brevissimus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3381
Lassen
Honey Lake Valley
Comment
CAS-BOT-BC361754
Psilocarphus brevissimus var. brevissimus
H. D. Ripley; R. C. Barneby
1944-5-30
5961
Lassen
North of Viewland
1371
Comment
POM40287
Psilocarphus elatior
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
SBBG63215
Psilocarphus tenellus
E. Rockwell
-Jun-1925
221
Lassen
Eagle Lake
1554
Comment
SJSU10070
Psilocarphus tenellus
L. Hooker
1965-7-12
Lassen
by Hwy 139 c. 8.3 mi NE of Susanville
1645
Comment
CHSC80646
Psoralidium lanceolatum
Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft
2001-6-2
10040
Lassen
North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain.
1828
Comment
NY702519
Psoralidium lanceolatum
J. T. Howell
1934-6-10
11860
Lassen
Doyle
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
UCD136178
Pteridium aquilinum var. pubescens
John Thomas Howell; Gordon H. True
1973-5-12
49175
Lassen
Sierra Nevada, 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
POM253219
Pterospora andromedea
A. A. Heller
1938-7-28
15302
Lassen
About a mile east of Westwood.
1524
Comment
CDA38860
Pterospora andromedea
H. Wilkerson & W. F. Cruickshank
Sep 1964
s.n.
Lassen
Hayden Hill.
0
Comment
HSC22982
Pterospora andromedea
John Pratt
1970-7-10
70
Lassen
1524
Comment
HSC68918
Pterospora andromedea
Gary Schoolcraft
1980-7-28
339
Lassen
N of Clark's Valley
2073
Comment
UCD34874
Puccinellia distans
Beecher Crampton
1964-6-27
7098
Lassen
Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs rec. area.
Comment
RSA0042600
Puccinellia lemmonii
Lowell A. Ahart, John Dittes, Todd Sloat
2013-6-9
18788
Lassen
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.
1008
Comment
UC1128540
Purshia tridentata var. tridentata
C. W. Hanks
1934-9-26
91
Lassen
w side Long Valley (near Plumas National Forest); Sierraville Quad.
1432
Comment
UC1137302
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
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
POM90536
Purshia tridentata var. tridentata
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
UC477495
Pyrola picta
A. G. Brenneis
1928-7-3
11
Lassen
Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley
1463
Comment
UC73543
Pyrola picta
Milo S. Baker
1890-1
Lassen
Milford
Comment
UC1332443
Pyrrocoma carthamoides var. cusickii
Ralph K. Gierisch
1968-7-11
3342
Lassen
Harvey Valley Lassen National Forest, Harvey Valley
1676
Comment
CAS-BOT-BC362262
Pyrrocoma carthamoides var. cusickii
Clarence R. Quick
1964-7-29
64 -91
Lassen
Blacks Mt. Experimental Forest
1798
Comment
CAS-BOT-BC362263
Pyrrocoma carthamoides var. cusickii
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50695
Lassen
Steep rocky slope south and southeast of Diamond Mt.
2286
Comment
SEINET13710357
Pyrrocoma lanceolata
Lowell William Ahart, Lowell William Ahart
1999-1
8231
Lassen
Willow Creek Wildlife Area, Hwy. 139, 4800 Ft (T31N, R12E, sec 4, SW 1/4)
1463
Comment
UCD135332
Pyrrocoma lanceolata var. subviscosa
Richard Alan Mayes
1973-7-23
89
Lassen
43 miles south of Alturas, on US Hwy 395.
Comment
JEPS100333
Pyrrocoma lucida
Dean W. Taylor
2001-7-19
17838
Lassen
meadow 0.5 air mi S of Doyle Grade, along private road in rural residential area Feather River Watershed
1859
Comment
JEPS93954
Pyrrocoma racemosa var. paniculata
Vernon H. Oswald
1998-9-14
9625
Lassen
Windy Hollow on the w side of Highway 44 ca. 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44
1737
Comment Read comments Jun 3 2007
CAS-BOT-BC105245
Quercus kelloggii
John Thomas Howell
1973-7-10
49788
Lassen
3 miles W of Susanville
1371
Comment
CAS-BOT-BC105246
Quercus kelloggii
John Thomas Howell
1976-7-19
51946
Lassen
SW of Susanville on Gold Run Road
1341
Comment
UCD46622
Quercus kelloggii
John Thomas Howell
1973-7-10
49788
Lassen
3 miles west of Susanville.
1371
Comment
UCR67040
Quercus kelloggii
George K. Helmkamp
1990-10-4
M- 8
Lassen
Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass
1463
Comment
UC1136879
Ranunculus alismifolius var. alismifolius
L. R. Short
1936-4-28
S- 339
Lassen
Harvey Valley Lassen National Forest
1706
Comment
HSC18114
Ranunculus alismifolius var. hartwegii
R. J. Vernimen
1963-5-4
49
Lassen
10 mi. N of Mineral on Hwy. 36
Comment
CHSC8743
Ranunculus aquatilis var. capillaceus
S. Chulasmai
1966-5-13
35
Lassen
Vernal pool, (Johnstonville).
Comment
POM98935
Ranunculus aquatilis var. capillaceus
Marcus E. Jones
1897-6-29
s.n.
Lassen
Susanville.
1311
Comment Read comments Jan 10 2016
RSA0011456
Ranunculus aquatilis var. capillaceus
Robert F. Thorne, Larry E. DeBuhr
1975-8-22
46981
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line.
1616
Comment
JEPS77523
Ranunculus aquatilis var. hispidulus
L. R. Heckard, T. I. Chuang and R. Bacigalupi
1978-7-20
4893
Lassen
junction of Blue Lake turn-off with Likely-Patterson Guard Station road; Warner Mts.
1889
Comment
CHSC5020
Ranunculus californicus
L. G. Bennett
1967-6-24
44
Lassen
North end of Murrers Meadow, near Eagle Lake.
1493
Comment
CHSC6246
Ranunculus canus
W. Vinyard
1946-6-13
Lassen
Pine Creek, Eagle Lake.
60
Comment
SEINET10536136
Ranunculus cymbalaria
Mary Susan Taylor
1974-1
Taylor 268
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
RSA293370
Ranunculus cymbalaria var. saximontanus
Reino Alava
1957-7-5
1135
Lassen
Along Highway no. 395, 4.4 miles S of Ravendale.
Comment
CHSC67295
Ranunculus glaberrimus
James D. Jokerst
1991-5-29
3313
Lassen
Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage.
1584
Comment
UC72019
Ranunculus glaberrimus
Milo S. Baker
1890-1
Lassen
Milford
Comment
CHSC14062
Ranunculus glaberrimus var. ellipticus
Tim Manolis
1974-2-16
16
Lassen
2 1/4 mi e of Eagle Lake Field Station.
Comment
CHSC7184
Ranunculus glaberrimus var. ellipticus
Lynn R. Thomas
1969-4-17
100
Lassen
Ca. 100 yds. w of Rice Canyon Rd., down hillside and just across small creek; 5 mi n of junction with 'Back road to Litchfield;' ca. 12 mi e of Susanville.
1310
Comment
UC1951076
Ranunculus glaberrimus var. glaberrimus
Debra Valov
2009-4-25
2009015
Lassen
Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299
Comment
JEPS60696
Ranunculus occidentalis
Frances D. Payne
1929-7-12
99 A
Lassen
Upper Silver Creek; ne Lassen Co.
Comment
UC118184
Ranunculus occidentalis
T. S. Brandegee
1892-6-28
Lassen
Janesville
Comment
UC1523766
Ranunculus occidentalis
Gary Schoolcraft
1981-5-5
371
Lassen
s Adin (e of Hwy 139)
1341
Comment
UCD96933
Ranunculus occidentalis
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
JEPS118446
Ranunculus occidentalis var. occidentalis
Lowell Ahart, John Dittes
2011-6-20
17479
Lassen
Meadow, 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
RSA74352
Ranunculus occidentalis var. ultramontanus
Milo S. Baker
1952-5-23
12409
Lassen
Along Hwy 36, betw Pluster and Fredownyer Pass.
Comment
CDA3487
Ranunculus testiculatus
Lee Wheeler
1963-3-29
Lassen
County fairgrounds, Susanville.
0
Comment
UCD97133
Ranunculus testiculatus
T. C. Fuller
1963-6-12
10666
Lassen
Susanville, county fairgrounds.
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
JEPS114691
Ribes aureum var. aureum
Lowell Ahart, John Dittes
2008-6-20
14950
Lassen
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
CAS-BOT-BC93393
Ribes cereum
Carl B. Wolf
1929-9-1
3780
Lassen
Mount Lassen National Park, between grassy and Snag Lakes.
Comment
CHSC23566
Ribes cereum
W. O. Baum
1971-6-28
40
Lassen
E slope of Gallatin Peak at edge of fire trail.
1920
Comment
HSC95270
Ribes inerme var. inerme
Gordon Leppig
1998-7-12
947
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CAS-BOT-BC212579
Ribes montigenum
Alice Eastwood
1912-8-22
1863
Lassen
Trail from Morgan Springs to Lassen Butte
Comment
CAS-BOT-BC212656
Ribes nevadense
A. A. Heller
1938-6-4
15145
Lassen
1 mile E of Fredonyer Pass
Comment
NY455349
Ribes nevadense
A. A. Heller
1938-6-4
15145
Lassen
1 miles east of Fredonyer Pass
1706.9
Comment
RSA0022881
Ribes nevadense
A. A. Heller
1938-6-4
15145
Lassen
1 mile east of Fredonyer Pass.
1707
Comment
CHSC7761
Ribes roezlii
Beverly J. Wise
1969-5-17
99
Lassen
16.5 mi. N. W. of Susanville on the west side of Gallatin Creek, 1/4 mi. south of Eagle Lake.
1554
Comment
UC1587075
Ribes roezlii
G. Schoolcraft
1991-7-30
2191
Lassen
n side Widow Mountain (Bear Spring)
1780
Comment
RSA0024767
Ribes roezlii
James Henrickson
1969-9-4
4267
Lassen
4 miles S of Westwood along Highway 147.
1390
Comment
SEINET10838520
Ribes roezlii
Mary Susan Taylor
1974-1
Taylor 309
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
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
UC585163
Ribes velutinum
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1738
Lassen
gully on mountain above Red Rock
1420
Comment
UCR17277
Ribes velutinum
Frank C. Vasek
1975-7-11
750711- 29
Lassen
Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139
1829
Comment
CAS-BOT-BC363011
Rigiopappus leptocladus
Arnold Tiehm; Jan Nachlinger; Margaret Williams
1988-6-2
11700
Lassen
South side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway
1386
Comment
JEPS30485
Rigiopappus leptocladus
Peter H. Raven and Otto T. Solbrig
1958-6-17
13302
Lassen
along United States Highway 395 8.0 mi n Madeline
Comment
UC35867
Rigiopappus leptocladus
Milo S. Baker
July 1894
Lassen
s side Dixie Mts.
Comment
UC485203
Rigiopappus leptocladus
Franklin P. Nutting
Lassen
Dixie Valley
Comment
CAS-BOT-BC74532
Rorippa curvisiliqua
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49503
Lassen
Sierra Nevada. Elysian Valley, west of Janesville.
1325
Comment
JEPS53868
Rorippa curvisiliqua
Brown and Wieslander
1922-7-30
24
Lassen
Martin Springs Eagle Lake, Martin Springs
Comment
JEPS121254
Rorippa curvisiliqua var. orientalis
Lowell Ahart
2013-7-22
18855
Lassen
30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
UC1536933
Rorippa nasturtium-aquaticum
Gordon H. True Jr.
1936-6-26
547
Lassen
e Eagle Lake (head of Willow Creek); , e of Eagle Lake
1584
Comment
CHSC117284
Rorippa palustris var. fernaldiana
Lowell Ahart; John Dittes
2016-7-15
21218
Lassen
Along a ditch west of the road, about 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC93661
Rosa californica
Lowell Ahart; John Dittes
2005-6-2
11944
Lassen
Along a small stream, 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, about 7.5 miles (air) northwest of Hallelujah Junction.
1601
Comment
RSA716339
Rosa californica
L. Ahart, J. Dittes
2005-6-2
11944
Lassen
1.5 miles NE of the Anderson Ranch home, Long Valley, 6 miles (air) N of intersection of Scott Road and Hwy 70, 7.5 miles (air) NW of Hallelujah Jct.
1602
Comment
CAS-BOT-BC148259
Rosa woodsii var. ultramontana
John Thomas Howell
1974-7-8
50492
Lassen
Susanville - Sierra Nevada
1295
Comment
JEPS45632
Rosa woodsii var. ultramontana
Brown and Wieslander
1928-6-16
Lassen
Eagle Lake
1584
Comment
RSA647522
Rosa woodsii var. ultramontana
Marion P. Harthill
1972-6-16
803
Lassen
Litchfield
1311
Comment
CHSC60401
Rubus parviflorus
Mary Ann Showers
1992-6-13
2556
Lassen
Lassen Volcanic National Park. Southwest of Widow lake.
2072
Comment
UC1746173
Rumex
Annetta M. Carter
1945-9-30
1720
Lassen
Sam Webb place near end of Eagle Lake.
1554
Comment
RSA768027
Rumex acetosella
L. Ahart, John Dittes
2010-7-31
17001
Lassen
About 50 yards east of the large culvert, 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
1516
Comment
CAS-BOT-BC421956
Rumex acetosella
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49507
Lassen
Elysian Valley, west of Janesville
1325
Comment
SEINET10479394
Rumex acetosella
Jeffrey Huber
1971-6-11
Huber 319
Lassen
3 mi E of Westwood, on CA Hwy 36; in volcanic soils (basalt), in Pinus jeffreyi.
1608
Comment
CHSC112845
Rumex crispus
Lowell Ahart; John Dittes
2013-7-22
18865
Lassen
Drainage filled with dirt from construction of a pond, 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
CHSC76101
Rumex fueginus
Lowell Ahart; Vernon H. Oswald
1999-9-13
8214
Lassen
On the edge of a flooded canal, just 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
CHSC65317
Rumex occidentalis
Vernon H. Oswald
1995-8-21
7210
Lassen
Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the marshy edge of the lake.
1859
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
SDSU9722
Rumex salicifolius var. lacustris
D. F. Howe
1966-8-25
Lassen
41.0 Miles s of Alturas on #3954.2 miles N of juction with #12, on #1.
1676
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
UC748281
Rumex salicifolius var. triangulivalvis
Annie M. Alexander and Louise Kellogg
1946-8-11
5153
Lassen
nw end Grasshopper Valley
Comment
CAS-BOT-BC434075
Rumex transitorius
John Thomas Howell
1976-7-19
51959
Lassen
Southwest of Susanville on Gold Run Road.
1341
Comment
CHSC77225
Rumex venosus
G. Schoolcraft
1993-6-1
2267
Lassen
Along Hwy 395 about 1.5 mi n. of turnoff to Wendel.
1280
Comment
POM203794
Rumex venosus
J. T. Howell
1934-7-8
12486
Lassen
Spaldings Resort; Eagle Lake
Comment
SD61014
Sagina saginoides
D. F. Howe
1964-8-1
Lassen
Parsnip Creek, Warner Mts., Modoc National Forest
1829
Comment
CAS-BOT-BC445671
Sagittaria cuneata
L. S. Smith
1918-7-22
1009
Lassen
Modoc National Forest. Blue Lake
1874
Comment
UC1051438
Sagittaria cuneata
Herbert L. Mason
1955-8-13
14647 a
Lassen
Willow Creek Valley
Comment
CAS-BOT-BC332741
Sagittaria cuneata
R. F. Thorne; Larry E. DeBuhr
1975-8-22
46992
Lassen
Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line
1615
Comment
CAS-BOT-BC445674
Sagittaria cuneata
Clarence R. Quick
1964-8-4
64 -102
Lassen
Reservoir at Long's cabin between Black's Mt. and Experimental Forest
1783
Comment
JEPS124721
Sagittaria cuneata
Joe Ammirati
1964-7-1
76
Lassen
Ca. 1 mi. W. of Beber on H. W. 299- near bridge.
Comment
CHSC65120
Salix eastwoodiae
Vernon H. Oswald; Lowell Ahart
1995-7-24
7140
Lassen
Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor.
1905
Comment
CAS-BOT-BC108055
Salix exigua
John Thomas Howell
1975-7-23
51403
Lassen
Wet ground along Hwy. 395 between Johnstonville and Jonesville - Sierra Nevada
1280
Comment
CAS-BOT-BC108056
Salix exigua
P. Monnet
1919-7-1
823
Lassen
Hot Springs Peak
91
Comment
RSA0035819
Salix exigua
Lowell A. Ahart, John Dittes
2008-6-22
15043
Lassen
In Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber.
1257
Comment
CAS-BOT-BC104044
Salix hindsiana
Mrs. H. P. Bracelin
1931-6-29
485
Lassen
McArthur, at edge of Pit River
950
Comment
CAS-BOT-BC128169
Salix lasiandra var. lasiandra
Lowell Ahart
1974-5-5
911
Lassen
Peter Ahart Ranch, Honcut - Sierra Nevada
45
Comment
CAS-BOT-BC107368
Salix lasiolepis var. lasiolepis
A. G. Brenneis
1928-5-28
2
Lassen
Lassen National Forest, 1/2 mi. East of Willow Springs
1371
Comment
UC1776696
Salix lemmonii
G. Schoolcraft
1994-8-3
2425
Lassen
About 1.5 miles SW of Boot Lake
2011
Comment
CHSC99729
Salix lucida subsp. lasiandra
Lowell Ahart; John Dittes
2008-6-22
15044
Lassen
On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber.
1257
Comment
SEINET11987291
Salix lutea
J. Vale, Wagnon, K.; Knight, W.; Knight, I.
1981-1
4121
Lassen
Willow Creek Campground on road between adin and Said Valley Reservoir
Comment
UCR67403
Salsola gobicola
George K. Helmkamp
1990-9-23
B- 16 -90
Lassen
Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36
1345
Comment
JEPS95904
Salsola tragus
Lowell Ahart and Vernon H. Oswald
1999-9-13
8205
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
UC1136482
Salsola tragus
E. Sawyer
1935-6-27
218
Lassen
Long Valley Sierraville Quad., Long Valley
Comment
CHSC71239
Salvia dorrii var. dorrii
Vernon H. Oswald; Lowell Ahart
1998-6-4
9145
Lassen
Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia.
1389
Comment
CAS-BOT-BC214310
Salvia dorrii var. pilosa
H. D. Ripley; R. C. Barneby
1944-5-30
5966
Lassen
Secret Valley
1524
Comment
CHSC26166
Sambucus mexicana
Detzer; M. Sacks
1977-7-15
5
Lassen
Ca. 3.5 mi SE of Milford, 1 mi SE of Laufman Rngr. Stn. on unimproved USFS road.
1420
Comment
UC1136751
Sambucus mexicana
L. R. Short and J. Warren
1936-7-28
S- 490
Lassen
Burgess Spring Experiment Range Lassen National Forest
1859
Comment
CHSC60347
Sambucus racemosa var. microbotrys
Mary Ann Showers
1992-6-13
2557
Lassen
Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake.
2072
Comment
CHSC68855
Sambucus racemosa var. microbotrys
Vernon Oswald; Lowell Ahart
1997-6-24
8609
Lassen
South of Susanville on the north side 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 boundry.
1889
Comment
JEPS5934
Sambucus racemosa var. microbotrys
Frances D. Payne
1929-7-12
80
Lassen
Lost Lake Warner Mountains (se extremity of mts.)
2286
Comment
JEPS947
Sanicula tuberosa
G. S. Crew, C. S. Robinson
6/1/1927-7/1/1927
12
Lassen
near Westwood Junction (Lassen National Forest, Norval Flat, sw Lassen County); Lassen National Forest, Norval Flat
2051
Comment
POM161480
Sanicula tuberosa
Franklin P. Nutting
1894-7-9
s.n.
Lassen
Pine Creek
Comment
UC1598734
Sanicula tuberosa
M. S. Baker and Frank Nutting
1894-7-9
Lassen
Pine Creek
Comment
CHSC64783
Sarcobatus vermiculatus
Vernon H. Oswald
1995-5-24
6775
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320), 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel).
1219
Comment
UC1136501
Sarcobatus vermiculatus
E. Sawyer
1935-6-27
216
Lassen
Sierraville Quad., Long Valley
Comment
CHSC4972
Sarcodes sanguinea
R. Carter
1967-6-22
536
Lassen
ca 1/4 mi S of Five Corners on Peans Ridge Road.
1584
Comment Read comments Jan 31 2011
JEPS59098
Sarcodes sanguinea
Mary G. Clark
1918-5-24
Lassen
Westwood, Lassen Co.
Comment
JEPS114854
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
SEINET10751251
Scirpus acutus var. occidentalis
Andrew Townesmith, Karen M. Meyer
2007-7-22
Townesmith 842
Lassen
Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10. T31N R7E S35 NW 1/4.
1980
Comment
HSC95197
Scirpus microcarpus
Gordon Leppig
1998-7-12
943
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
JEPS87446
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
SEINET6727388
Sclerolinon digynum
J. T. Howell, G. H. True., Jr.
1973-6-28
49490
Lassen
Sierra Nevada, Elysian Valley
1326
Comment
JEPS11413
Scrophularia desertorum
R. F. Hoover
1940-9-28
4632
Lassen
Susanville
Comment
NY415691
Scutellaria holmgreniorum
N. H. Holmgren
1980-7-5
9524
Lassen
21.9 km (13.6 mi.) from U.S. Hwy. 395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale
1580
Comment
JEPS62885
Scutellaria nana
L. S. Smith
C. 1918
Lassen
Bieber Range, nw Lassen County Bieber Range
1371
Comment
JEPS88204
Scutellaria nana
Vernon H. Oswald and Lowell Ahart
1996-6-24
7863
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
RSA719468
Scutellaria nana
L. P. Janeway
2005-4-7
84614
Lassen
High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41.
534
Comment
UC1609176
Scutellaria nana
Vernon H. Oswald and Lowell Ahart
1993-6-28
5595
Lassen
e of Poison Lake (Harvey Valley Rd. (33N02), 2.0 mi n of Hwy 44, between Grays Valley and Harvey Valley); Harvey Valley Rd.
1734
Comment
CDA28589
Secale cereale
D. Haskelle
2000-2-7
s.n.
Lassen
Doyle.
0
Comment
SEINET4891272
Secale cereale
M. J. Williams
1974-7-26
74 -I-38
Lassen
2 miles west of Hallelujah Junction, south of HWY 70
1494
Comment
UCR244035
Secale cereale
Jim Andre
1993-6-5
19705
Lassen
Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport
1256
Comment
UC506921
Senecio aronicoides
George A. Fischer and Irwin H. Johnson
1933-7-14
F- 253
Lassen
Lassen Forest
1783
Comment
CHSC114299
Senecio eurycephalus var. lewisrosei
B. Villegas
2010-6-17
Lassen
South of Adin; Hwy. 139 at Milepost 58. On both sides of the road.
Comment
JEPS109870
Senecio hydrophiloides
Dean W. Taylor
2007-6-14
20129
Lassen
between Gordon Lake and Bullard Lake, along Forest Road 31N31 0.3 miles NE of junction with Forest Road 34N25 (this the junction at the northwest end of Gordon Lake)
1828
Comment
JEPS17740
Senecio hydrophiloides
Rimo Bacigalupi with G. Thomas Robbins
1955-7-20
5413
Lassen
4.4 mi s Patterson Ranger Station (in meadow e edge of Long Valley, s end of the Warner Mountains); Modoc National Forest, Warner Mountains, Long Valley
2057
Comment
UC1609237
Senecio hydrophiloides
Vernon H. Oswald and Lowell Ahart
1993-6-28
5600
Lassen
Rd 35N04 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley
1725
Comment
UC1142925
Senecio hydrophilus
A. L. Hormay
1941-6-23
12
Lassen
Burgess Spring Lassen National Forest, Burgess Spring
1676
Comment
UC1594646
Senecio hydrophilus
Vernon H. Oswald and Lowell Ahart
1992-7-16
5128
Lassen
Feather Lake on s side Bridge Creek Spring Rd. ((County Rd. 112, Forest Rd. 31N06), ca 0.4 mi e of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02) between Old Station and Susanville); Feather Lake
1749
Comment
SEINET10534709
Senecio integerrimus
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 3111
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-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
CAS-BOT-BC363856
Senecio integerrimus var. exaltatus
Doris Kildale Gillespie
1930-5-13
9388
Lassen
Between Susanville and Janesville
Comment
UC1063253
Senecio integerrimus var. exaltatus
A. Simontacchi
1940-5-15
712
Lassen
10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quad.
1699
Comment
UCD55305
Senecio integerrimus var. exaltatus
Ellen Dean; Gary Schoolcraft
2006-5-16
3134
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
RSA0124944
Senecio integerrimus var. exaltatus
E. K. Balls
1950-5-19
14 .772
Lassen
Above Ash Creek Public Camp, off rd. from Adin to Madeline.
1616
Comment
RSA0124971
Senecio integerrimus var. exaltatus
E. K. Balls
1950-5-19
14776
Lassen
By E. end Maul Reservoir, on rd. from Adin to Madeline.
1524
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
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
CDA2461
Setaria verticillata
Willis Wheeler
Oct 1930
Lassen
0
Comment
CHSC104781
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
CAS-BOT-BC213324
Sidalcea
G. D. Hanna
1958-9-22
s.n.
Lassen
Road from Caribou Lake to Cone Lake
Comment
HSC82190
Sidalcea glaucescens
Thomas W. Nelson, Jane Nelson
1980-7-6
6039
Lassen
Along Ash Creek at Ash Creek Campground
1494
Comment
POM84765
Sidalcea oregana subsp. oregana
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville
1524
Comment
UC506975
Sidalcea oregana subsp. oregana
George A. Fischer, Irwin H. Johnson
1933-7-12
F- 227
Lassen
Lassen Forest , Patterson Flat
1737
Comment
UC579721
Sidalcea oregana subsp. oregana
David D. Keck and J. Clausen
1935-6-24
3740
Lassen
2 mi s Ravendale; s of Ravendale
1464
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
UC1125817
Silene bernardina
A. Simontacchi
1940-7-3
928
Lassen
2.3 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad.
1844
Comment
UC1136874
Silene bernardina
George A. Fischer and Irwin H. Johnson
1933-7-14
F- 257
Lassen
Lassen National Forest
1783
Comment
UC585109
Silene bernardina
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1765
Lassen
rocky ne slope of ridge near summit e Red Rock; summit e of Red Rock
1828
Comment
CAS-BOT-BC384310
Silene bernardina
George W. Gillett
1957-7-24
896
Lassen
Lassen Volcanic National Park. Flats between Cameron Meadow and Snag Lake
1950
Comment
SDSU4478
Silene menziesii
D. F. Howe
1964-8-1
3908
Lassen
Parsnip Creek, Warner Mts., Modoc National Forest.
1829
Comment
CHSC4836
Silene nuda
R. Carter
1967-7-16
616
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
CHSC91925
Silene nuda
L. P. Janeway
2005-7-31
8511
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
UC120167
Silene nuda
unknown
1892-6-24
Lassen
Honey Lake
Comment
UC569941
Silene nuda
E. Sawyer
1935-6-27
223
Lassen
Long Valley Sierraville Quad., Long Valley
Comment
NY813531
Silene nuda subsp. insectivora
G. Schoolcraft
1988-7-7
1818
Lassen
Southeast corner of Madeline Plains ca. 1 mile south of Horne Ranch
1646
Comment
HSC4227
Silene verecunda
Fred J. Kindel
1955-7-9
Lassen
Susan River
Comment
CHSC116070
Sisymbrium altissimum
Lowell Ahart; John Dittes
2015-7-13
20316 -A
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
HSC27354
Sisymbrium altissimum
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19283
Lassen
Along Hwy. 395, 4 mi. E of Standish
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
RSA0045631
Sisymbrium orientale
Lowell A. Ahart, John Dittes
2008-6-20
14900
Lassen
About 100 yards south 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
CHSC5932
Sisyrinchium bellum
M. West
1946-6-20
Lassen
Eagle Lake. Grasshopper Valley.
1624
Comment
JEPS88552
Sisyrinchium bellum
Vernon H. Oswald and Lowell Ahart
1996-6-24
7875 .1
Lassen
ca 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, in meadow bordering Papoose Creek where it leaves the n end of the meadow); Modoc Plateau, Papoose Meadows, Papoose Creek
1633
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
UC1542917
Solanum triflorum
G. Schoolcraft
1987-9-1
1774
Lassen
Ash Valley, along Ash Valley road Ash Valley
1548
Comment
JEPS103173
Solidago velutina subsp. californica
G. Schoolcraft
1994-8-29
2426
Lassen
About 1 mile west of Susanville up Piute Creek
1341
Comment
SEINET11170749
Sphenosciadium capitellatum
C. G. Gulling
1905-1
1562
Lassen
Big Meadows.
Comment
RSA18166
Spiraea douglasii
Carl B. Wolf
1929-9-1
3779
Lassen
Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake.
Comment
JEPS64515
Spiranthes romanzoffiana
Brown and Wieslander
1922-7-30
49
Lassen
Martin Sprs. Eagle Lake
Comment
SEINET10700599
Stachys ajugoides var. rigida
Karen M. Meyer, Andrew Townesmith
2007-7-21
Meyer 142
Lassen
Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21.
1821
Comment
SEINET11604939
Stanleya viridiflora
L. Bass
1982-7-25
10 -82
Lassen
Near Karlo, ca 12 miles N of Litchfield.
1356
Comment
JEPS95038
Stellaria crispa
Vernon Oswald and Lowell Ahart
1997-6-24
8610
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 (29N10)); Diamond Mountain, Forest Road 29N43
1889
Comment
CHSC4785
Stellaria longipes var. longipes
R. Carter
1967-6-29
574
Lassen
In Murrer's Meadow, 100 yds. SE of dam.
Comment
JEPS51139
Stellaria longipes var. longipes
Brown and Wieslander
1922-7-18
52
Lassen
Martin Springs; Eagle Lake
Comment
CHSC77201
Stenotus lanuginosus
G. Schoolcraft
1993-6-10
2294
Lassen
Along Clark's Valley Rd. s. of Red Rock Lake.
1828
Comment
JEPS36876
Stephanomeria lactucina
Brown and Wieslander
1922-7-19
40
Lassen
Martin Springs Eagle Lake
Comment
CAS-BOT-BC205201
Stephanomeria pauciflora
James R. Shevock; Barbara Ertter
1986-7-20
11738
Lassen
Northern Sierra Nevada. Along U.S. highway 395 at Red Rock Road
1500
Comment
UCR57502
Stephanomeria spinosa
R. D. Goeden, Don W. Ricker
1989-8-22
890822- 10
Lassen
Modoc Plateau, Horse Lake Road, just east of Hansen Road, SW of Ravendale
1567
Comment
CHSC66853
Stephanomeria virgata subsp. pleurocarpa
Vernon H. Oswald
1996-10-3
8296
Lassen
Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 13.4 mi N of Smoke Creek Ranch Rd. Roadside.
1524
Comment
SEINET10524630
Stipa comata var. comata
Douglas G. LeDoux, David B. Dunn
1973-5-25
LeDoux 884
Lassen
Coll 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds.
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
GMDRC7738
Stipa thurberiana
J. M. Andre, G. Clifton
1993-6-1
33417
Lassen
Modoc Plateau: along US Hwy 395 approx 5 mi. SSE of Ravendale, between Spanish Spring and heliport site.
1661
Comment
SEINET10940334
Streptanthus cordatus
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 2606
Lassen
6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon juniper pine, jeffrey pine along high ridge & in sandy wash.
1402
Comment
UCD149957
Stuckenia filiformis subsp. alpina
William Anderson
1963-6-24
s.n.
Lassen
Hartson Reservoir.
Comment
UC7240
Suaeda moquinii
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3325
Lassen
Honey Lake Valley
1828
Comment
JEPS95901
Suaeda occidentalis
Lowell Ahart
1999-9-13
8211 A
Lassen
just south 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
JEPS117485
Swertia albicaulis var. albicaulis
Lowell Ahart, John Dittes
2010-7-31
16987
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
CAS-BOT-BC269699
Symphoricarpos mollis
G. Schoolcraft
1997-6-24
2604
Lassen
Doyle Grade W of Doyle
1706
Comment
CHSC64841
Symphoricarpos rotundifolius var. rotundifolius
Vernon H. Oswald
1995-6-26
6932
Lassen
Modoc Plateau. Ash Valley Rd. (Lassen 527), 9.9 mi W of Madeline, ca 0.5 mi W of the reservoir at Fleming Sheep Camp and along the stream coming from the same.
1609
Comment
CHSC79146
Symphoricarpos rotundifolius var. rotundifolius
L. P. Janeway
2000-6-24
6839
Lassen
Northern High Sierra Nevada. Volcanic promontory on south edge of the top of Crystal Peak.
2371
Comment
CHSC5024
Symphoricarpos vaccinioides
L. G. Bennett
1967-7-17
182
Lassen
20 yards from shore of Mahogany Lake, near entrance rd.
2060
Comment
CAS-BOT-BC98930
Symphyotrichum foliaceum var. parryi
B. C. Cain
1925-8-24
111
Lassen
1 mi. below Drakesbad, Mt. Lassen Nat. Park
1645
Comment
UC1745661
Symphyotrichum frondosum
Annetta M. Carter
1945-9-30
1724
Lassen
Sam Webb place near end of Eagle Lake.
1554
Comment
UCD54543
Symphyotrichum frondosum
Ellen Dean; Petra Unger, Dawn Cunningham
2005-10-10
2726
Lassen
E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area.
1246
Comment
UCR67451
Symphyotrichum lanceolatum var. hesperium
George K. Helmkamp
1990-9-23
A- 9
Lassen
Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36
1345
Comment
CAS-BOT-BC98541
Symphyotrichum spathulatum
B. C. Cain
1925-8-24
82
Lassen
1 mi. below Drakesbad, Mt. Lassen Nat. Park
1645
Comment
CHSC113936
Symphyotrichum spathulatum
Lowell Ahart
2014-8-20
19720
Lassen
All over the meadow, 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.
1894
Comment
UCR270428
Symphyotrichum spathulatum
John F. Emmel
2000-7-30
1673
Lassen
Northern Sierra Nevada Mountains, Bogard Campground, at west end of Pine Creek Valley
1753
Comment
CAS-BOT-BC238510
Synthyris missurica
John Thomas Howell
1934-6-14
12119
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
SEINET10826287
Taraxacum californicum
David B. Dunn, Billy Joe Cox
1971-1
Lassen
Comment
CHSC23557
Taraxacum officinale
W. O. Baum
1971-6-6
33
Lassen
E slope of Gallatin Peak in fire trail.
1920
Comment
CAS-BOT-BC376899
Taraxacum officinale
1927-6-19
17
Lassen
Lassen National Forest. Norval Flat
1747
Comment
CAS-BOT-BC376901
Taraxacum officinale
Louella Bass
1973-4-13
16
Lassen
Elysian Valley
1325
Comment
CHSC36471
Taraxia tanacetifolia
Jeffrey R. Peek
1982-6-4
32
Lassen
Ca. 3/4 mi n Murrers Upper Meadow, ca. 20 yds e of road.
Comment
CHSC4967
Taraxia tanacetifolia
R. Carter
1967-6-23
547
Lassen
In upper part of Murrer's Meadow.
1584
Comment
CHSC6193
Taraxia tanacetifolia
W. Vinyard
1946-6-10
Lassen
Pelican Point, Eagle Lake.
1556
Comment
OBI76926
Taraxia tanacetifolia
Anthony Baniaga
2011-6-10
319
Lassen
Along hwy 395 ca. 6.6 mi S of Karlo Rd quad
1220
Comment
SEINET5345198
Taraxia tanacetifolia
M. J. Williams
1974-7-26
74 -L-24
Lassen
2 mi west of Hallelujah Junction, south of Hwy 70
1494
Comment
SJSU10922
Taraxia tanacetifolia
J. W. Tilden
1958-6-27
1296
Lassen
Madeline
Comment
UC572206
Taraxia tanacetifolia
E. Sawyer
1935-6-27
219
Lassen
Long Valley Sierraville Quadrangle
1310
Comment
CHSC93242
Tetradymia canescens
John Dittes; Scott Chamberlain
2004-6-28
1007
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
JEPS17732
Tetradymia canescens
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5421
Lassen
16.3 mi e U. S. 395 (and 2.5 w of Calif-Nevada State line, tributary of Rush Creek (head of Smoke Creek drainage)); Rush Creek, Smoke Creek
1389
Comment
JEPS38111
Tetradymia glabrata
W. L. Jepson
1918-8-4
7804
Lassen
Horse Lake
1554
Comment
SD87577
Tetradymia glabrata
Frank W. Peirson
1926-6-24
6854
Lassen
Madeline Plains.
Comment
UCR244047
Tetradymia spinosa
Jim Andre
1993-6-1
19717
Lassen
Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel
1218
Comment
CAS-BOT-BC392288
Thalictrum fendleri
Alice Eastwood
1912-8-22
1769
Lassen
Trail from Morgans Springs to Sulphur Works, Lassen Butte Region
Comment
CAS-BOT-BC392289
Thalictrum fendleri
Alice Eastwood
1912-8-22
1769
Lassen
Trail from Morgans Springs to Sulphur Works, Lassen Butte Region
Comment
UC9719
Thalictrum sparsiflorum
M. S. Baker and Frank Nutting
1894-7-12
Lassen
Pine Creek
Comment
SEINET3562918
Thelypodium howellii
Arnold Tiehm, Jan Nachlinger, Gary Schoolcraft
1984-1
Lassen
Comment
CAS-BOT-BC88086
Thelypodium howellii subsp. howellii
Arnold Tiehm; Gary Schoolcraft; Jan Nachlinger
1984-6-25
8826
Lassen
Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81.
1828
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
RSA285953
Thelypodium integrifolium subsp. complanatum
T. C. Fuller
1980-9-4
20336
Lassen
0.3 km S of the Smoke Creek Ranch Road, 2 km W of the state line, Rush Creek drainage.
Comment
CAS-BOT-BC88133
Thelypodium milleflorum
Ella Dales Cantelow
1941-5-22
3633
Lassen
3.5 miles south of Secret Valley C.C.C. Camp. U.S. Highway 395 to Alturas from Susanville.
Comment
UC1583956
Thermopsis macrophylla var. argentata
G. Schoolcraft
1990-5-15
2052
Lassen
about 4 mi s Nubieber; John's Valley
1310
Comment
CAS-BOT-BC193472
Thinopyrum ponticum
T. C. Fuller
1963-7-15
10887
Lassen
S. of road to Little Valley 2.9 mi. SE of Pittville
Comment
CAS-BOT-BC193473
Thinopyrum ponticum
T. C. Fuller
1963-7-16
10920
Lassen
Head of Secret Valley, W side of Hwy 395 to Litchfield, 14.1 mi. S of Ravendale
Comment
UCD93337
Thinopyrum ponticum
T. C. Fuller
1963-7-15
10887
Lassen
2.9 miles SE of Pittville. South of road to Little Valley.
Comment
CHSC14173
Thlaspi arvense
K. R. Stern; D. B. Joley, J. G. Geschke
1974-6-23
5838
Lassen
Ca. 1 mi se of Ravendale on w side of Hwy. 395.
1618
Comment
CAS-BOT-BC88165
Thysanocarpus curvipes
C. L. Hitchcock
1940-5-26
6598
Lassen
Ca. 12 miles north of Fall River Mills. (Shasta county) on Fall River.
1371
Comment
JEPS107813
Thysanocarpus curvipes var. curvipes
Lowell Ahart, John Dittes
2005-6-2
11953
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
UCR183237
Tiquilia nuttallii
Jim Andre, G. L. Clifton
1993-6-2
7718
Lassen
Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns
1243
Comment
POM72574
Tiquilia nuttallii
Marcus E. Jones
1897-6-22
s.n.
Lassen
10 miles south of Amedee. [Lassen or Plumas Co.?]
1220
Comment
UCD55265
Toxicoscordion paniculatum
Ellen Dean
2006-5-15
3063
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.
1249
Comment
CHSC58843
Trichostema oblongum
Vernon H. Oswald; Lowell Ahart
1992-7-16
5127
Lassen
Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1.0 mi E of Willow Spring Rd. (Forest Rd. 31N56), between Old Station and Susanville.
1745
Comment
CHSC66247
Trichostema oblongum
Vernon H. Oswald; Lowell Ahart
1996-6-24
7858
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Abundant in a patch of low sagebrush at the interface between meadow and forest on the W side of the meadow ca. 0.4 mi S of the cabins.
1633
Comment
UCSC011036
Trifolium eriocephalum subsp. 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 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber; 41.183167 -121.036972; 41.183167 -121.036972
1268
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
UCSC010316
Trifolium hybridum
Unknown
2016-6-7
21019
Lassen
On the west edge of State Highway 299, Big Valley Mountains, 0.4 air miles northeast of Big Valley Summit, 5.0 air miles southwest of Bieber
1398
Comment
UC1523771
Trifolium longipes
Gary Schoolcraft
1981-6-25
474
Lassen
along east fork Willard Creek
1584
Comment
HSC103929
Trifolium longipes subsp. shastense
L. Ahart, John Dittes
2008-6-20
14923
Lassen
About 7.0 air mi. NE of Bieber, ~4.0 air mi. NE of Headquarters at Ash Creek State Wildlife Area; ~ 10 yds. west of where the levee road crosses Big Valley Canal, in Big Valley.
1264
Comment
JEPS114641
Trifolium longipes var. nevadense
Lowell Ahart, John Dittes
2008-6-20
14955
Lassen
About 200 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
SEINET10936663
Trifolium macrocephalum
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2585
Lassen
6 mi s of adin; along california hwy 139 right of way, in basalt clay grassy Road bank, artemesia juniper assoc.
1372
Comment
UC1025070
Trifolium monanthum var. monanthum
Leo Whitney
1934-7-24
1502
Lassen
ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest
1737
Comment
UCD109948
Trifolium wormskioldii
R. Tofsrud
1951-7-13
s.n.
Lassen
Susanville Area.
Comment
UCR244042
Triglochin concinna var. debilis
Jim Andre
1993-6-1
19712
Lassen
Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel
1218
Comment
CHSC112427
Triglochin scilloides
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18777
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
CAS-BOT-BC199575
Trisetum canescens
John Thomas Howell
1976-7-19
51972
Lassen
On Gold Run Creek southwest of Susanville
1386
Comment
CHSC56824
Triteleia hyacinthina
Jerry Snodgrass
1978-7-8
37
Lassen
Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite.
1499
Comment
CHSC25069
Triteleia montana
L. G. Bennett
1967-7-17
169
Lassen
0.3 miles north of junction of Silver Lake rd. and Highway 44, on Highway 44.
1975
Comment
SD8210
Umbellularia californica
J. M. Hutchings, Cleveland
1881-6-19
Lassen
Eagle Peak.
Comment Read comments May 12 2020
CAS-BOT-BC404115
Urtica dioica subsp. holosericea
John Thomas Howell; Gordon H. True
1973-8-1
50251
Lassen
Gold Run Creek road south of Susanville, Diamond Range
1950
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
UC449974
Utricularia macrorhiza
Franklin P. Nutting
1900-7-23
Lassen
Eagle Lake
Comment
RSA748318
Utricularia vulgaris
K. M. Meyer, A. Townesmith
2007-7-21
148
Lassen
Lassen National Forest. 1.3 mile on Road 10 to Silver Lake off Road 110. Pine forest, lake.
1963
Comment
CAS-BOT-BC194022
Vaccinium cespitosum
M. S. Baker; Frank Nutting
1894-7-30
s.n.
Lassen
Silver Lake
Comment
RSA18170
Veratrum californicum
Carl B. Wolf
1929-9-1
3776
Lassen
Mt. Lassen Natl Park, between Grassy Lake and Snag Lake
Comment
CHSC67070
Verbascum thapsus
Willis Ball
1969-6-28
53
Lassen
Found growing by Eagle Lake about 50 yds. S. of E.L.B.S. Plant.
1554
Comment
SEINET9186959
Verbena bracteata
G. Schoolcraft
1998-8-4
2800
Lassen
Along Hwy 395 berm.
1341
Comment
CHSC4900
Veronica americana
Bill Wilson
1967-6-28
68
Lassen
Collected at Upper Murrer Meadow, 2.5 mi. E of Eagle Lake Biological Station, 10 mi. N of Susanville.
1524
Comment
UC1012181
Veronica americana
Francis W. Pennell
1940-6-10
25775
Lassen
3 mi e of Westwood (Route 36)
1584
Comment
UC1537438
Veronica americana
Gordon H. True Jr.
1936-6-27
554
Lassen
Jenkin's Meadow, Skedaddle Creek Skedaddle Creek; Jenkin's Meadow, Skedaddle Creek
1524
Comment
CHSC99740
Veronica catenata
Lowell Ahart; John Dittes
2008-6-20
14932
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 7.0 miles (air) northeast of Bieber.
1263
Comment
CHSC117533
Veronica peregrina subsp. xalapensis
Lowell Ahart; John Dittes
2016-7-13
21130
Lassen
Along the west edge of the pond, 90 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 Valle.
1289
Comment
UC1583994
Veronica peregrina subsp. xalapensis
G. Schoolcraft
1990-5-15
2045
Lassen
about 3 mi s of Nubieber (John's Valley area); John's Valley area
1402
Comment
CHSC76789
Veronica wormskjoldii
L. P. Janeway
1999-9-5
6557
Lassen
Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow.
1900
Comment
SD61009
Vicia americana subsp. oregana
Darley F. Howe
1964-8-1
3909
Lassen
Warner Mountains, Modoc National Forest, Parsnip Creek
1890
Comment
UC16929
Vicia americana var. americana
M. S. Baker and Frank Nutting
1894-7-2
Lassen
s side Dixie Mts.
Comment
JEPS23987
Viola adunca
W. L. Jepson
1910-6-10
4110
Lassen
East Fork King Creek on Cinder Cone Trail; King Creek
2133
Comment
UC1121558
Viola beckwithii
A. Simontacchi
1940-5-17
731
Lassen
5.7 mi ssw of Patterson Mountain; Lassen National Forest
1706
Comment
UC1137742
Viola beckwithii
L. R. Short
1936-4-28
S 328
Lassen
Harvey Valley; Lassen National Forest
1706
Comment
SEINET6176958
Viola hallii
Leigh A. Johnson
1993-4-23
93 -003
Lassen
Jct. HWY 395 and road to Ramhorn Campground and Painter Flat ca. 60 miles south of Alturis.; 0
1650
Comment
CHSC36466
Viola purpurea subsp. dimorpha
Jeffrey R. Peek
1982-6-3
27
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
RSA412739
Viola purpurea subsp. integrifolia
Christopher Davidson
1975-6-7
2728
Lassen
2.1 mi W of Westwood on Hwy 36.
1555
Comment
POM83922
Viola purpurea subsp. venosa
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
UC1024883
Vulpia bromoides
Leo Whitney
1935-5-26
3138
Lassen
10 mi e Adin; Ash Creek
Comment Read comments Jun 24 2009
SEINET5427977
Vulpia microstachys
J. A. Young
1982-6-9
s.n.
Lassen
M. Meyer's Ranch, Adin.
1372
Comment
CAS-BOT-BC183944
Vulpia microstachys var. microstachys
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49202
Lassen
Elysian Valley northwest of Janesville
1325
Comment
UC43057
Woodsia oregana
Mrs. C. C. Bruce
June 1898
2326
Lassen
Mt range
Comment
CHSC4864
Wyethia
R. Carter
1967-7-7
581
Lassen
Collected ca. 20 yds from E shore of small resevoir, dry forest. Deans Meadow.
Comment
CAS-BOT-BC382872
Wyethia angustifolia
G. Schoolcraft
1989-6-5
1900
Lassen
Near inter. Hwy 299 & Pittville Hwy near Lava Bench Resort
Comment
SEINET10726809
Wyethia helenioides
Paul Gallian, David B. Dunn
1971-6-2
Gallian 488
Lassen
5 mi. S of Milford near Honey Lake on U.S. Hwy. 395.
1250
Comment
CAS-BOT-BC383484
Wyethia mollis
Carl B. Wolf
1929-9-1
3777
Lassen
Mt. Lassen National Park between Grassy and Snag Lakes
Comment
CAS-BOT-BC383487
Wyethia mollis
Clarence R. Quick
1961-6-21
61 -36
Lassen
Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak
1798
Comment
RSA302669
Wyethia mollis
J. R. Shevock
1972-5-20
1820
Lassen
Near Doyle, Hwy 395.
1220
Comment
UC1099972
Zannichellia palustris
Verne Grant and Irving Schneider
1947-8-1
8242
Lassen
e. end Tule Lake
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
HSC30121
Zigadenus paniculatus
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19307
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
HSC15755
Zigadenus paniculatus
R. C. Sanford
1965-4-30
16
Lassen
44mi N of Susanville on Hwy. 395
1372
Comment
HSC15758
Zigadenus paniculatus
R. T. Haase
1965-4-24
49
Lassen
12 mi. E of Susanville on Hwy. 395
Comment
HSC30042
Zigadenus venenosus var. venenosus
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19185
Lassen
Harvey Valley near Cone Springs
Comment