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Specimen ID
Determination *
Collector
Collection Date
Collection Number
County
Locality
Elevation in meters
Feedback
CAS-BOT-BC78035
Abies concolor
Clare B. Hardham
1969-8-28
s.n.
Lassen
west of Janesville
Comment
CAS-BOT-BC78036
Abies concolor
John Thomas Howell
1976-7-19
51966
Lassen
Gold Run Creek southwest of Susanville
1386
Comment
CDA19039
Abies concolor
Mark Lubinski
2000-10-12
PDR 070105
Lassen
Sierra Nevada; 1 mi W on State Route 44 and 36.
0
Comment
CHSC13792
Abies concolor
Anne Linda Brisk
1969-7-2
33
Lassen
Growing along the shore of Mohogany Lake.
Comment
RSA518546
Abies concolor
F. C. Vasek
1976-9-3
760903 -A
Lassen
5 miles W of Susanville, N of State Highway 44 at a point 1/4 mile N of junction with State Highway 36.
Comment
CHSC13794
Abies magnifica
Cathy Crittenden
1970-7-9
39
Lassen
2 1/2 miles east of Antelope Mtn. lookout on road to Eagle Lake Resort.
1981
Comment
CAS-BOT-BC330610
Acer glabrum var. glabrum
Clare B. Hardham
1969-8-28
17438
Lassen
Sierra Nevada. West of Janesville.
Comment
CHSC68838
Acer glabrum var. torreyi
Vernon Oswald; Lowell Ahart
1997-6-24
8607
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 boundary
1889
Comment
CAS-BOT-BC28646
Achillea millefolium
Margaret Williams
1974-7-27
74 -L-70
Lassen
Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70.
1493
Comment
CAS-BOT-BC28650
Achillea millefolium
Albert Michael Vollmer; L. Beane
1953-7-1
97
Lassen
Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur.
1554
Comment
UC1125421
Achillea millefolium
A. Simontacchi
1940-6-13
826
Lassen
3.3 mi wsw Patterson Mtn.; Halls Flat Quad.
1752
Comment
CHSC93660
Achnatherum hymenoides
Lowell Ahart; John Dittes
2005-6-2
11996
Lassen
Along a small wash, east 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
CAS-BOT-BC216444
Achnatherum occidentale subsp. californicum
1927-6-25
29
Lassen
Unspecified
1706
Comment
POM115575
Achnatherum occidentale subsp. occidentale
Marcus E. Jones
1897-6-21
s.n.
Lassen
Chat.
1616
Comment
RSA582082
Achnatherum occidentale subsp. occidentale
J. T. Howell
1934-7-6
12431
Lassen
Hall's Flat.
Comment
UC1024688
Achnatherum occidentale subsp. occidentale
Leo Whitney
1933-7-15
2157
Lassen
16 mi w of upper end of Eagle Lake; Lassen National Forest, Harvey Montain
Comment
UC1133257
Achnatherum occidentale subsp. occidentale
H. P. Hagge
1929-9-17
38
Lassen
Logan Mtn. Eagle Lake Quadrangle, Logan Mtn.
Comment
UC717977
Achnatherum occidentale subsp. occidentale
David D. Keck
1944-7-8
5451
Lassen
1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada, Susan River
1341
Comment
UC1137654
Achnatherum occidentale subsp. pubescens
George A. Fischer and Irwin H. Johnson
1933-7-12
218
Lassen
1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest
1722
Comment
UC1143012
Achnatherum occidentale subsp. pubescens
August L. Hormay
1934-6-30
Lassen
Harvey Mtn. Lassen National Forest
2133
Comment
UCD51194
Achnatherum occidentale subsp. pubescens
L. Whitney
1935-6-24
s.n.
Lassen
Squaw Valley.
Comment
CHSC29880
Achnatherum thurberianum
Robin L. Ondricek
1978-6-8
47
Lassen
Ridge E of Lower Dry Lake.
1798
Comment
SEINET229581
Achnatherum thurberianum
Gary Schoolcraft
1982-6-22
722
Lassen
North end of Fort Sage Mountains
Comment
UCD51444
Achnatherum thurberianum
R. Tofsrud
1947-7-1
223
Lassen
Between Ravendale and Thermos.
Comment
UC1037345
Achnatherum webberi
Leo Whitney
1935-7-3
3587
Lassen
Ashurst Mt.
Comment
JEPS120844
Acmispon denticulatus
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18746
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
JEPS121257
Acmispon denticulatus
Lowell Ahart, John Dittes
2013-7-23
18888
Lassen
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
CAS-BOT-BC412873
Aconogonon davisiae
Lassen 1927 G. S. Crew
1927-6-25
31
Lassen
Lassen National Forest. Norval Flat
1747
Comment
CAS-BOT-BC412871
Aconogonon davisiae
Brighton C. Cain
1925-8-25
127
Lassen
Horse trail from summit of Mt. Lassen to Drakesbad, Mt. Lassen Volcanic National Park
Comment
CAS-BOT-BC391608
Actaea rubra
Louella Bass
1973-6-17
119
Lassen
Elysian Valley
1325
Comment
SEINET4339237
Aegilops triuncialis
G. Schoolcraft
1997-6-26
2603
Lassen
1.2 mile north of Susanville, west of Highway 395
1326
Comment
CHSC21954
Agastache parvifolia
Robert A. Schlising
1974-7-19
3152
Lassen
SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station along dirt road.
Comment
CHSC26987
Agastache parvifolia
J. D. Prouty
1978-9-17
Lassen
Bald Hills, North Shore Eagle Lake.
Comment
CHSC9544
Agastache parvifolia
L. E. Ray
1967-6-25
53
Lassen
Coll. ca. 2 mi. w ELBS Pellican Point.
1524
Comment
JEPS28682
Agastache parvifolia
George W. Gillett
1957-7-26
909
Lassen
along e shore Butte Lake (Butte Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Butte Lake
1859
Comment
JEPS87414
Agastache parvifolia
Vernon H. Oswald and Lowell Ahart
1993-6-28
5619
Lassen
e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering Pine Creek); ne end of Little Harvey Valley, Pine Creek
1737
Comment
OBI77068
Agastache urticifolia
Anthony Baniaga
2011-7-5
417
Lassen
Lassen NF. E of Willard Crk Fredonyer Pass quad T29N R10E sec 25 NE of NW
1473
Comment
UC1483811
Agastache urticifolia
G. Schoolcraft
1979-7-5
122
Lassen
n face Observatioin Peak; n face of Observation Peak
1828
Comment
POM147886
Agastache urticifolia
J. B. Feudge
1927-7-20
1754
Lassen
Westwood
Comment
POM1922B
Ageratina occidentalis
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
UC1483833
Ageratina occidentalis
G. Schoolcraft
1979-8-15
180
Lassen
Tule Mountain area Tule Mountain
2042
Comment
CAS-BOT-BC30233
Ageratina occidentalis
Hans Leschke
1964-9-4
1894
Lassen
Lassen Highway near Diamond Point
Comment
CHSC60711
Agoseris glauca var. glauca
Vernon H. Oswald; Lowell Ahart
1993-6-14
5530
Lassen
Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518,33N89).
1566
Comment
CHSC59071
Agoseris glauca var. monticola
Vernon Oswald; Lowell Ahart
1992-8-25
5181
Lassen
Lassen Volcanic National Park. Near Grassy Creek at the S end of Snag Lake, at the junction of Snag Lake-Butte Lake and Snag Lake-Horseshoe Lake trails.
1865
Comment
UCD128593
Agoseris grandiflora
G. Schoolcraft
2000-6-19
2904
Lassen
Susanville; west of Cold Spring Valley.
1706
Comment
CHSC66231
Agoseris heterophylla
Vernon Oswald; Lowell Ahart
1996-6-24
7860
Lassen
Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau.
1633
Comment
POM34510
Agoseris heterophylla
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat.
1524
Comment
UC585117
Agoseris heterophylla var. heterophylla
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1774
Lassen
dry sandy wash Red Rock
1280
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
SEINET10789617
Agropyron cristatum
John Thomas Howell
1961-9-25
Howell 36970
Lassen
East side of Beckwourth Pass. Sierra Nevada.
1554
Comment
SEINET10551977
Agropyron elongatum
John Thomas Howell
1975-7-23
Howell 51409
Lassen
Along Hwy 395 between Johnstonville and Janesville. Densely cespitose.
1280
Comment
SEINET7297772
Agrositanion
John Thomas Howell
1976-1
52002
Lassen
Open juniper-Jeffrey pine woodland on basaltic rock, about 5 miles west of Fredonyer Pass near confluecne of Susan River and Willard Creek.
1433
Comment
UC1130648
Agrostis alba
H. S. Yates
1936-8-11
6069
Lassen
Baxter Creek Susanville Quadrangle
Comment
CAS-BOT-BC127237
Agrostis exarata
John Thomas Howell; Gordon H. True
1973-7-31
50021
Lassen
Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range.
1737
Comment
CAS-BOT-BC127239
Agrostis exarata
John Thomas Howell; Gordon H. True
1973-8-1
50182
Lassen
Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range.
1584
Comment
RSA0105582
Agrostis exarata
Lowell Ahart, John Dittes
2013-7-22
18858
Lassen
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
RSA129563
Agrostis exarata
L. R. Short
1936-8-21
499
Lassen
Burgess Spr. Exp. Range.
1799
Comment
UC53515
Agrostis exarata
M. S. Baker and Frank Nutting
1894-7-6
Lassen
Dixie Valley
Comment
UC589901
Agrostis exarata
H. S. Yates
1936-8-11
6067
Lassen
Baxter Creek Susanville Quad., Baxter Creek
Comment
CAS-BOT-BC139450
Agrostis hyemalis
Leo Whitney
1933-8-4
2228
Lassen
Meadow near Sheepshead.
1889
Comment
UC725737
Agrostis idahoensis
A. A. Heller
1942-9-7
16534
Lassen
edge Echo Lake; edge Echo Lake
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
CAS-BOT-BC138801
Agrostis scabra
John Thomas Howell
1959-9-23
34882
Lassen
Lassen Park. North end of Juniper Lake.
2057
Comment
CAS-BOT-BC138803
Agrostis scabra
John Thomas Howell; Gordon H. True
1973-8-1
50178
Lassen
Sierra Nevada. Gold Run Creek Road south of Susanville, Diamond Range.
1584
Comment
RSA129202
Agrostis stolonifera
H. S. Yates
1936-8-11
6069
Lassen
Bexter Creek [Baxter? creek]. Susanville.
1280
Comment
UC53478
Agrostis variabilis
M. S. Baker and F. Nutting
1894-7-21
Lassen
Eagle Lake
Comment
POM313032
Alisma gramineum
Malcolm A. Nobs, S. Galen Smith
1949-7-22
1074
Lassen
Along Willow Creek, Willow Creek Valley, 10 miles north of Susanville
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
UCD137906
Alisma gramineum
Malcolm A. Nobs; S. Galen Smith
1949-7-22
1074
Lassen
along Willow Creek, Willow Creek Valley, 10 miles north of Susanville.
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
CHSC7661
Allium acuminatum
Beverley J. Wise
1969-5-18
138
Lassen
17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215.
1524
Comment
UC1483842
Allium acuminatum
G. Schoolcraft
1980-6-5
250
Lassen
ne side of Snowstorm Mountain Snowstorm Mountain
1584
Comment
HSC69609
Allium anceps
Gary Schoolcraft
1980-4-30
215
Lassen
N base of Shaffer Mtn. near Shaffer Well
1354
Comment
UC3055
Allium anceps
Mrs. C. C. Bruce
June, 1898
Lassen
Madeline Plains
Comment
SEINET222604
Allium anceps
D. W. 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
CHSC27592
Allium campanulatum
Jennifer Estep
1978-7-5
22
Lassen
E side of Mahogany Lake, S of Eagle L.
2060
Comment
CHSC30581
Allium campanulatum
Sori H. Shad
1970-7-25
48
Lassen
Found on the way to Papoose Valley, about 9 miles south of E. L. B. S.
1653
Comment
HSC69593
Allium campanulatum
Gary Schoolcraft
1980-7-28
340
Lassen
S of Blue Lake
2043
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
HSC67118
Allium lemmonii
Dale McNeal
1980-6-1
2338
Lassen
Beside Hwy. 139, 32.4 mi. S of junction with Hwy. 299 in Adin
Comment
SEINET10532723
Allium lemmonii
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17786
Lassen
6 miles n of hallelujah jct. On u.s. Hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge & in sandy wash
1402
Comment
JEPS103165
Allium parvum
Beth Corbin
2002-4-11
1055
Lassen
Near Skedaddle Ranch Rd, ca 1/2 mi ENE of East Side Reservoir.
1493
Comment
CHSC68887
Allium platycaule
Vernon Oswald; Lowell Ahart
1997-6-24
8624
Lassen
South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43.
2164
Comment
JEPS94546
Allium platycaule
Vernon Oswald and Lowell Ahart
1997-6-24
8624
Lassen
s of Susanville (on n side of Diamond Mountain on Forest Road 21N52, 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52
2164
Comment
POM110002
Allium platycaule
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain. Susanville. Perkin s Ranch.
1829
Comment
CAS-BOT-BC474073
Allium platycaule
H. D. Ripley; R. C. Barneby
1943-6-14
5733
Lassen
Fredonyer Pass
1676
Comment
CAS-BOT-BC476625
Allium tolmiei
B. Bartholomew; M. Gilbert; L. Skog
1993-5-13
6563
Lassen
U.S. Hwy. 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield.
1330
Comment
CHSC26169
Alnus incana subsp. tenuifolia
Detzer; Sacks
1977-7-24
2
Lassen
Ca. 3 mi se Milford, .5 mi se Laufman Ranger Stn., on unimproved USFS road.
1481
Comment
JEPS88576
Alopecurus aequalis
Vernon H. Oswald and Lowell Ahart
1996-6-24
7873
Lassen
Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), along Papoose Creek where it leaves the n end of the meadow, Modoc Plateau); Modoc Plateau, Papoose Meadows, Papoose Creek
1633
Comment
UCD55845
Alopecurus aequalis
A. A. Beetle
1941-6-28
2795
Lassen
10 miles W of Chester, rte 36.
Comment
CAS-BOT-BC138010
Alopecurus geniculatus
Stuart K. Harris
1960-6-23
21410
Lassen
Bed of Poison Lake.
1645
Comment
UC1136824
Alopecurus geniculatus
George A. Fischer and Irwin H. Johnson
1933-7-11
F 190
Lassen
Dry Lake Lassen Nat'l Forest, Grass Valley, Dry Lake
1694
Comment
CHSC68738
Alyssum minus subsp. micranthum
Vernon H. Oswald; Lowell Ahart
1997-5-27
8496
Lassen
North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of a creek paralleling the road.
1546
Comment
JEPS93815
Alyssum simplex
Vernon H. Oswald and Lowell Ahart
1998-6-4
9144
Lassen
s of Constantia (at parking area at end of spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road
1389
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
CAS-BOT-BC42890
Ambrosia acanthicarpa
John Thomas Howell
1961-9-25
36973
Lassen
East side of Beckwourth Pass
1554
Comment
CHSC66845
Ambrosia acanthicarpa
Vernon Oswald
1996-10-3
8298
Lassen
North of Susanville on Horse Lake Road (Lassen 546) 3.6 mi E of Hwy. 139. Modoc Plateau.
1554
Comment
JEPS95745
Ambrosia acanthicarpa
Vernon H. Oswald and L. Ahart
1995-8-14
7191
Lassen
T33N R14E SW1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville
1645
Comment
UC1118423
Ambrosia acanthicarpa
C. W. Hanks
1934-9-25
86
Lassen
floor of, (near Plumas National Forest) Long Valley; Sierraville Quad., Plumas National Forest
1371
Comment
RSA38464
Amelanchier pallida
Philip A. Munz
1947-5-20
11886
Lassen
Laufman Forestry Public Camp Ground, above Milford.
1524
Comment
UC1924571
Amelanchier utahensis
Debra Valov
2006-5-29
2006021
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1285
Comment
UC726025
Amelanchier utahensis
A. A. Heller
1938-6-4
15144
Lassen
about 1 mi e Fredonyer Pass
1706
Comment
CAS-BOT-BC142538
Amelanchier utahensis
Philip A. Munz
1947-5-20
11886
Lassen
Laufman Forestry Public Camp Ground, above Milford
1524
Comment
CHSC109980
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.
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
SEINET10455819
Amsinckia menziesii
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2582
Lassen
6 mi S of Adin; along CA Hwy 139 right-of-way; in basalt-clay, grassy road bank; Artemesia-Juniper assoc.
1372
Comment
UCD119818
Amsinckia tessellata
John Thomas Howell
1934-6-10
11842
Lassen
Near Plumas Junction.
Comment
UC585123
Amsinckia tessellata var. tessellata
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1747
Lassen
e facing slope of gully on mountain above Red Rock
1432
Comment
CHSC5040
Anaphalis
L. B. Barlow
1967-7-4
95
Lassen
5 mi. south of Eagle Lake Biological Station on Gallatin Beach Road.
1737
Comment
CAS-BOT-BC45257
Ancistrocarphus filagineus
B. Bartholomew; M. Gilbert; L. Skog
1993-5-13
6562
Lassen
US Highway 395, 6.0 km N of railroad crossing and 20.1 km N of Litchfield.
1330
Comment
POM36284
Ancistrocarphus filagineus
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat. [also Chats, a former settlement]
1524
Comment
UC1523709
Antennaria argentea
Gary Schoolcraft
1981-7-8
501
Lassen
north of Coulthurst Flat
1828
Comment
CHSC5193
Antennaria dimorpha
1945-6-1
Lassen
Eagle Lake.
1584
Comment
CHSC52381
Antennaria dimorpha
B. G. Clark
1987-4-15
24
Lassen
100 ft from NE corner of undeveloped field adjacent to east of 705 Hall St, Susanville. Northern edge of city limits.
1297
Comment
CHSC7640
Antennaria dimorpha
Beverley J. Wise
1969-4-13
11
Lassen
5.6 mi east of junction of Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road).
1463
Comment
HSC28309
Antennaria dimorpha
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19266
Lassen
Harvey Valley near Cone Springs
Comment
JEPS107971
Antennaria dimorpha
Lowell Ahart, John Dittes
2005-6-1
11915
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
1425
Comment
UC773914
Antennaria dimorpha
L. R. Short
1936-6-8
S- 386
Lassen
Burgess Sp. Exp. Range Thompson Meadow
1743
Comment
SEINET10671600
Antennaria dimorpha
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17794
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-BC69138
Antennaria geyeri
Milo S. Baker
1894-7-12
s.n.
Lassen
Pine Creek
Comment
CAS-BOT-BC69143
Antennaria geyeri
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49517
Lassen
Elysian Valley, west of Janesville
1325
Comment
CHSC68841
Antennaria geyeri
Vernon H. Oswald; Lowell Ahart
1997-7-24
8591
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
JEPS19756
Antennaria luzuloides
Rimo Bacigalupi with S. Galen Smith
1957-6-28
5996
Lassen
3.6 mi n of Madeline
1645
Comment
UC380912
Antennaria luzuloides
Marcus E. Jones, A. M.
1897-6-18
Lassen
Chat
1524
Comment
UC585069
Antennaria luzuloides
E. B. Babcock, G. L. Stebbins Jr.
1936-6-8
1791
Lassen
about 2 mi n Madeline
1363
Comment
UCD169450
Antennaria luzuloides
Lowell Ahart; John Dittes
2005-6-1
11862
Lassen
Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. About 1/2 mile west of Scott Road, on the east side of the poor dirt road.
1448
Comment
CHSC60811
Antennaria luzuloides subsp. aberrans
Vernon H. Oswald; Lowell Ahart
1993-6-28
5589
Lassen
Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.
1719
Comment
CHSC60304
Antennaria rosea subsp. confinis
Mary Ann Showers
1992-6-13
2558
Lassen
Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake.
2072
Comment
CHSC65289
Anthemis cotula
Vernon H. Oswald; Lowell Ahart
1995-8-14
7175
Lassen
Modoc Plateau. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville.
1348
Comment
RSA125375
Anthoxanthum aristatum
P. H. Raven, Otto T. Solbrig
1958-6-16
13228
Lassen
4.5 miles east of Westwood on Hwy 36
Comment
CDA42997
Apera interrupta
L. Ahart, John Dittes
2008-6-19
14868
Lassen
About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber.
Comment
CHSC117198
Aphyllon fasciculatum
Lowell Ahart; John Dittes
2016-6-7
20997
Lassen
On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
1289
Comment
UC1123464
Apocynum androsaemifolium
H. P. Hagge
1929-9-12
28
Lassen
Logan Mt. Eagle Lake Quad., Logan Mt.
Comment
POM75751
Apocynum pumilum var. rhomboideum
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain. Susanville. Perkin s Ranch.
1829
Comment
NY119422
Arabis rectissima
R. C. Rollins
1983-7-5
83227
Lassen
2 miles S of Eagle Lake Summit
Comment
JEPS53155
Arabis rectissima var. rectissima
Jos. Grinnell
1928-6-16
Lassen
Eagle Lake Lassen Peak Region
1584
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
SEINET2471272
Arceuthobium abietinum
R. L. Mathiasen
2008-9-15
2008 -27
Lassen
12.8 km S. of jct. of Westwood Road on State Route 44
1720
Comment
CDA6787
Arctium minus
T. C. Fuller
1959-7-7
4725
Lassen
Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo.
0
Comment
CDA6788
Arctium minus
T. C. Fuller
1959-7-7
4725
Lassen
Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo.
0
Comment
RSA38477
Arctostaphylos manzanita subsp. manzanita
P. A. Munz
1947-5-18
11865
Lassen
Fredonyer Forestry Public Camp Ground, west of Susanville.
1509
Comment
CAS-BOT-BC45897
Arctostaphylos nevadensis
A. H. Kramer
1930-6-9
s.n
Lassen
Prospect Peak, Lassen National Park
Comment
CAS-BOT-BC45904
Arctostaphylos nevadensis
M. S. Jussel
1931-9-6
s.n
Lassen
Sulphur Works, Mt. Lassen
2133
Comment
CAS-BOT-BC45909
Arctostaphylos nevadensis
Marcus E. Jones
1897-7-7
s.n
Lassen
Lassen's Peak
1828
Comment
SD43498
Arctostaphylos patula
Philip A. Munz
1947-5-18
11865
Lassen
Fredoyner Forestry Public Campground, W of Susanville
1509
Comment
UC549429
Arctostaphylos patula
F. Farris
1934-12-30
Lassen
Diamond Mt.
1524
Comment
CAS-BOT-BC42165
Arctostaphylos patula subsp. patula
Ida M. Gifford
1933-12-27
s.n.
Lassen
Near Susanville
1310
Comment
CAS-BOT-BC42166
Arctostaphylos patula subsp. patula
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-10
16319
Lassen
2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood
Comment
CHSC25747
Arctostaphylos patula subsp. patula
John Steiner
1977-6-14
73
Lassen
Lassen Volcanic National Park. 250 m NE Manzanita Lake and 250 m E Lassen Park boundry.
1768
Comment
JEPS28438
Arenaria congesta var. congesta
George W. Gillett
1957-7-29
945
Lassen
Along trail between Butte Lake Snag Lake; Lassen Volcanic National Park
1859
Comment
SEINET530729
Arenaria congesta var. lithophila
Paul Opler
2006-6-9
Lassen
Ash Valley Rd., 5.9 mi E of Adin.
1423
Comment
POM101442
Arenaria congesta var. simulans
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville.
1524
Comment
RSA59890
Arenaria congesta var. simulans
E. K. Balls
1950-5-19
14775
Lassen
21 miles W of Madeline on road to Adin.
1372
Comment
UC852268
Arenaria congesta var. subcongesta
A. A. Heller
1938-6-23
15198
Lassen
e Fredonyer Pss
1645
Comment
NY430990
Arenaria kingii subsp. plateauensis
G. Schoolcraft
1982-6-23
729
Lassen
Fort Sage Mountains
1920.2
Comment
JEPS126466
Argemone munita
Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky
2015-7-7
CA 350 -061
Lassen
395 S to Laver Crossing, turn right immediately after kiosk, keep straight at intersection near the railroad crossing.
Comment
JEPS124518
Argemone munita
Himayat H. Naqvi
1965-7-12
144
Lassen
2.6 miles from Milford, highway 139
Comment
UC1037334
Argemone rotundata
Leo Whitney
1934-8-5
1959
Lassen
10 mi se of Susanville (Harvey Lake Valley); Harvey Lake Valley
1402
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
POM253188
Arnica cordifolia
A. A. Heller
1938-6-4
15146
Lassen
1 mile east of Fredonyer Pass on hwy 36
1707
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
CHSC27166
Arnica dealbata
J. D. Prouty
1978-7-27
31
Lassen
2.4 mi w of jct with road A-1 on n side of Merrill Flat Rd, s of Eagle Lake.
1740
Comment
JEPS21729
Arnica dealbata
Franklin P. Nutting
Lassen
mts s Eagle Lake Eagle Lake
Comment
CHSC77183
Arnica parryi subsp. sonnei
G. Schoolcraft
1994-8-2
2400
Lassen
About 2 miles west of Boot Lake.
2286
Comment
JEPS109852
Arnica sororia
Dean W. Taylor
2006-6-29
19559
Lassen
Longs Cabin (ca. 12 air miles NE of Old Station)
1783
Comment
JEPS103204
Arnica sororia
G. Schoolcraft
1994-6-9
2346
Lassen
West of Hwy. 139 near Grasshopper valley
1706
Comment
JEPS103219
Arnica sororia
G. Schoolcraft
1993-6-19
2298
Lassen
Ash Valley RNA between Adin and Madeline, CA.
1600
Comment
UCD129188
Artemisia arbuscula
F. C. Raney
1966-6-25
s. n.
Lassen
Harvey Valley, Lassen National Forest.
Comment
CAS-BOT-BC85002
Artemisia arbuscula subsp. arbuscula
James Vale; Keith Wagnon; Walter Knight; Irja Knight
1981-5-20
4117
Lassen
81 miles south of Alturas in Lassen County.
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
UC773844
Artemisia arbuscula subsp. arbuscula
L. R. Short
1936-9-30
S- 506
Lassen
Burgess Spring Experimental Range Lassen National Forest, Burgess Spring Experimental Range
1746
Comment
CHSC118472
Artemisia arbuscula subsp. thermopola
Don Lepley
2016-7-31
Lassen
Between Feather Lakes and Highway 44, approximately 5 air miles southeast of Bogard Rest Area; a little less than a third of a mile north of railroad crossing on Highway 44. 40N31:50.1 x 121W01:51.8.
1748
Comment
UC1119576
Artemisia cana subsp. bolanderi
A. Simontacchi
1940-9-16
950
Lassen
1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle
Comment
UCD159571
Artemisia douglasiana
D. S. Park
2011-6-27
308
Lassen
East of Westwood. Growing near Willard Creek.
1471
Comment
SEINET6775481
Artemisia dracunculus
G. Schoolcraft
1992-8-11
2248
Lassen
Near intersection of Wingfield and Bass Hill Roads
1323
Comment
JEPS127351
Artemisia ludoviciana subsp. ludoviciana
Lowell Ahart, John Dittes
2016-7-13
21105
Lassen
200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
RSA523927
Artemisia ludoviciana subsp. ludoviciana
G. H. True
1937-7-10
783
Lassen
Bull Flat, Refuge 1Q
1524
Comment
RSA719608
Artemisia nova
A. Tiehm, Gary Schoolcraft
2003-9-11
14368
Lassen
2.9 miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of highway
1402
Comment
SEINET251695
Artemisia nova
Arnold Tiehm, Gary Schoolcraft
2003-9-11
14368
Lassen
2.9 Rd miles N of Karlo Rd. on highway 395 from Litchfield to Alturas, Just E of the highway.
1402
Comment
RSA758317
Artemisia tridentata subsp. tridentata
Doug Goldman
2004-11-5
2935
Lassen
To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake
1256
Comment
SEINET195654
Artemisia tridentata subsp. vaseyana
G. Thomas Robbins
1945-10-7
2155
Lassen
Lassen National Forest; Harvey Mountain, 2-3 miles northeast of burgess Spring, Harvey Valley
1676
Comment
HSC3295
Asclepias cordifolia
H. E. Parks, S. T. Parks
Jun 1928
226
Lassen
Lassen National Park, Drakesbad
1982
Comment
CHSC117492
Asclepias fascicularis
Lowell Ahart; John Dittes
2016-7-13
21150
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 of the southern slope of Big Valley.
1289
Comment
CHSC6222
Asclepias fascicularis
M. West
1946-7-10
Lassen
Pine Creek, Eagle Lake.
1584
Comment
JEPS127355
Asclepias fascicularis
Lowell Ahart, John Dittes
2016-7-13
21150
Lassen
200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
UC1537161
Asclepias fascicularis
Gordon H. True Jr.
1937-7-10
787
Lassen
between Bull Flat and Skeedaddle
1493
Comment
JEPS124871
Asclepias speciosa
Peter Schultz
1967-7-11
71
Lassen
1 mile south of Milford on U. S. 395.
Comment
POM261533
Aster eatonii
Alice Eastwood
1912-8-22
1918
Lassen
Battle Creek Meadows, Lassen Butte Region
Comment
CHSC66718
Aster elatus
Vernon H. Oswald; Lowell Ahart
1996-8-1
8120 B
Lassen
Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood.
1737
Comment
POM45145
Astragalus accidens var. hendersonii
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat.
1524
Comment
RSA0006691
Astragalus accidens var. hendersonii
H. D. Ripley, R. C. Barneby, F. C. Ripley Jr.
1943-6-13
108749
Lassen
South of Constantia.
1463
Comment
RSA0006693
Astragalus agrestis
H. D. Ripley, R. C. Barneby
1944-5-30
5976
Lassen
North of Termo;
1662
Comment
NY791373
Astragalus andersonii
G. Schoolcraft
1982-6-22
725
Lassen
North end of Ft. Sage Mountains
1585.0
Comment
POM45143
Astragalus andersonii
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat.
1524
Comment
NY791369
Astragalus andersonii
M. J. Williams
1974-8-4
74-L- 83
Lassen
About 2 miles west of Highway 395, near Highway 70
1493.5
Comment
HSC42428
Astragalus anxius
Barbara Kelly
1977-8-9
558
Lassen
16 1/4 mi. E of Madeline on the dirt road from Adin
Comment
NY790602
Astragalus argophyllus var. argophyllus
A. Tiehm
1986-5-12
10347
Lassen
1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek.
1341.1
Comment
CAS-BOT-BC178762
Astragalus canadensis var. brevidens
John Thomas Howell
1934-7-8
12504
Lassen
Spalding's, Eagle Lake
Comment
RSA0028049
Astragalus curvicarpus
John F. Emmel
1996-7-14
1423
Lassen
North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn.
1280
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
CAS-BOT-BC177847
Astragalus curvicarpus var. curvicarpus
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-11
16331
Lassen
13.5 mi. E of Susanville
Comment
CHSC64875
Astragalus curvicarpus var. curvicarpus
Vernon H. Oswald
1995-6-26
6923
Lassen
Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline.
1652
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
CAS-BOT-BC177842
Astragalus curvicarpus var. curvicarpus
M. E. Jones
1897-6-24
s.n.
Lassen
10 to 15 mi. w. of Amedee
1219
Comment
CDA26665
Astragalus filipes
G. D. Barbe
1982-7-12
3873
Lassen
East base of Dry Valley Ridge along Westside Road, 3 miles north of Dry Valley Gap (Thermo-Grasshopper Road), Madeline Plains.
Comment
CHSC5279
Astragalus filipes
L. Harman
1946-6-20
Lassen
Eagle Lake. Grasshopper Valley.
1624
Comment
HSC100805
Astragalus filipes
Lowell Ahart, John Dittes
2010-7-31
16976
Lassen
100 yd. NE of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin.
1521
Comment
SEINET225940
Astragalus filipes
M. Lavin, K Lavin
1982-5-16
4069
Lassen
1.5 mi E of Halleujah Jct. (US 395), 22 air mi 325 degrees from Reno, W side of Peterson Mts
1676
Comment
UC13367
Astragalus filipes
M. S. Baker and Frank Nutting
1894-6-20
Lassen
Big Valley
Comment
UCD104697
Astragalus filipes
Ellen Dean
2006-5-15
3061
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
SEINET10903957
Astragalus filipes
Williams
1983-7-31
Williams 83 -125-1
Lassen
Ash valley road, 17 mi from aden.
1829
Comment
UCD104699
Astragalus filipes
Michael A. Vincent
1999-6-9
8579
Lassen
Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon.
Comment
CDA19718
Astragalus gibbsii
D. Tillotson
1942-6-1
s.n.
Lassen
Modoc Plateau; Mud Flat.
1341
Comment
NY674268
Astragalus gibbsii
G. Schoolcraft
1993-6-8
2285
Lassen
US Highway 395 at Airport Road
1274
Comment
SEINET3142990
Astragalus gibbsii
E. K. Balls
1950-5-9
15949
Lassen
6 mi S of Doyle, Hwy 395
1372
Comment
POM24782
Astragalus gibbsii
Marcus E. Jones
1897-6-30
s.n.
Lassen
Susanville, 6 miles below Eagle Lake.
Comment
RSA110069
Astragalus gibbsii
H. D. Ripley, R. C. Barneby, F. C. Ripley Jr.
1943-6-13
5692
Lassen
South of Milford.
1433
Comment
RSA110067
Astragalus gilensis
H. D. Ripley, R. C. Barneby
1944-5-29
5951
Lassen
Container
1372
Comment
CAS-BOT-BC186912
Astragalus inversus
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville
1341
Comment
CHSC98246
Astragalus inversus
Allison Sanger
2003-6-25
Lassen
Halls Flat, west of Road 33N13, roughly 3 air miles north-northwest of Swains Hole and 8 miles east-northeast of Old Station.
1676
Comment
POM180437
Astragalus inversus
T. S. Brandegee
1892-7-1
s.n.
Lassen
Susanville
Comment
CHSC64785
Astragalus iodanthus var. diaphanoides
Vernon H. Oswald
1995-5-24
6763
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel.
1249
Comment
CAS-BOT-BC229045
Astragalus lemmonii
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1615
Comment
CAS-BOT-BC229048
Astragalus lemmonii
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1615
Comment
CAS-BOT-BC229052
Astragalus lemmonii
Alice Eastwood; John Thomas Howell
1940-6-11
7962
Lassen
Eastern Fall River Valley
Comment
JEPS123847
Astragalus lemmonii
Lowell Ahart, John Dittes
2015-7-14
20336
Lassen
About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment
JEPS87395
Astragalus lentiginosus var. floribundus
Vernon H. Oswald and Lowell Ahart
1993-7-8
5663
Lassen
Pittville Rd. (Lassen 111, 36N01) 1.9 mi n Hwy 44 (se edge Poison Lake); se edge Poison Lake
1709
Comment
RSA109610
Astragalus lentiginosus var. platyphyllidius
H. D. Ripley, R. C. Barneby
1943-6-14
5744
Lassen
Hidden Valley E of Susanville
1311
Comment
CAS-BOT-BC187331
Astragalus lentiginosus var. salinus
Alice Eastwood; John Thomas Howell
1940-6-16
8335
Lassen
Near Susanville
Comment
SBBG128879
Astragalus lentiginosus var. salinus
L. Ahart
2011-6-20
17510
Lassen
near edge of Ash Valley Rd, 3120 feet S of Ash Crk Cmpgrd, ca. 6.5 mi (air) SE of Adin
1511
Comment
HSC63126
Astragalus malacus
Teresa Prendusi
1980-4-28
1101
Lassen
Rice Canyon
1341
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
UC1128893
Astragalus obscurus
A. Simontacchi
1940-5-17
748
Lassen
1.1 mi ssw Dixie Spring (Lassen National Forest); Halls Flat Quad., , ssw of Dixie Sprin
Comment
UC1128861
Astragalus pulsiferae
E. Sawyer
1935-6-27
237
Lassen
Long Valley Sierraville Quad., Long Valley
Comment
CHSC91331
Astragalus pulsiferae var. pulsiferae
Lowell Ahart; John Dittes
2005-6-1
11871
Lassen
On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction.
1448
Comment
UCD105194
Astragalus pulsiferae var. pulsiferae
John Thomas Howell
1955-7-19
30818
Lassen
East side of Bechwourth Pass, Sierra Nevada.
1493
Comment
HSC28311
Astragalus purshii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19269
Lassen
Harvey Valley near Cone Springs
Comment
SEINET10452237
Astragalus purshii
Mary Susan Taylor
1974-1
Taylor 257
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
CHSC57280
Astragalus purshii var. lagopinus
Mary Meyer
1980-7-14
Lassen
Ash Valley.
1524
Comment
RSA0007957
Astragalus purshii var. lectulus
H. D. Ripley, R. C. Barneby
1944-5-30
5983
Lassen
2 miles N of Madeline.
1707
Comment
CAS-BOT-BC194088
Astragalus purshii var. purshii
Marcus E. Jones
1897-6-28
s.n.
Lassen
Perkin's Ranch, top of Diamond Mt., Susanville
2225
Comment
RSA121820
Astragalus purshii var. purshii
K. e. Bradshaw
1939-5-27
235
Lassen
Black Mountain Experimental Forest, Plot 39-1.
1753
Comment
UC1601984
Astragalus purshii var. tinctus
Mrs. R. M. Austin
1879-1
Lassen
Comment
NY701850
Astragalus whitneyi var. siskiyouensis
B. J. Ertter
1987-6-16
7183
Lassen
Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM
2134
Comment
RSA517335
Astragalus whitneyi var. siskiyouensis
Barbara J. Ertter, Gary Schoolcraft
1987-6-16
7183
Lassen
Skeedaddle Mountains on NE side of Honey Lake
2134
Comment
UC1567401
Astragalus whitneyi var. whitneyi
G. Schoolcraft
1989-6-19
1915
Lassen
Ash Valley RNA/ACEC
1554
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
JEPS29746
Atriplex confertifolia
Rimo Bacigalupi and L. R. Heckard
1962-5-28
8501
Lassen
along road from U.S. 395 past Wendel and Flanagan to Pyramid Lake, Nevada, 2 mi e Wendel junction (n of Honey Lake); , e of Wendel junction
1219
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
UCR183190
Balsamorhiza deltoidea
Jim Andre, G. L. Clifton
1993-5-28
7711
Lassen
Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn
1349
Comment
CDA10419
Balsamorhiza hirsuta
T. C. Fuller
1963-6-11
10663
Lassen
West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale.
0
Comment
JEPS94113
Balsamorhiza hookeri
Vernon H. Oswald and Lowell Ahart
1998-5-22
90889
Lassen
Hwy. 36 between Fredonyer Summit and Susanville (0.4 mi. w. of the Susan R. & Bizz Johnston Trail)
1417
Comment
CAS-BOT-BC106490
Balsamorhiza hookeri
Ella Dales Cantelow
1941-5-22
3550
Lassen
Fredonyer Pass, 13 1/2 mi. w. of Susanville Hwy #36
Comment
CHSC31967
Balsamorhiza sagittata
Wayne O. Baum
1971-6-21
71 -30
Lassen
S. slope of Gallatin Peak.
2042
Comment
UC1119027
Balsamorhiza sagittata
H. P. Hagge
1929-9-11
20
Lassen
Logan Mtn. Eagle Lake Quad.
1828
Comment
CAS-BOT-BC16437
Barbarea orthoceras
George Wilson Gillett
1957-7-21
868
Lassen
Lassen Volcanic National Park. Juniper Lake - Cameron Meadow trail. 300 yards north of trail summit.
2118
Comment
NY119710
Barbarea orthoceras
N. H. Holmgren
1978-6-11
8919
Lassen
Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi.) E of Ravendale and 22.5 km (14 mi.) airline distance
1680
Comment
RSA79262
Bassia hyssopifolia
E. K. Balls
1952-10-10
18137
Lassen
0.7 miles E of Standish, Hwy 395, between Susanville and Alturas.
1250
Comment
JEPS121246
Beckmannia syzigachne
Lowell Ahart, John Dittes
2013-7-22
18871
Lassen
40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
SEINET10661222
Beckmannia syzigachne
Lowell Ahart, John Dittes
2008-6-20
Ahart 14946
Lassen
T39N, R8E, northeast 1/4 Section 34. 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
SJSU9993
Beckmannia syzigachne
C. L. Kline
1965-7-13
195
Lassen
1.8 mi E of Nubieber on Highway 299
2493
Comment
JEPS113921
Berteroa incana
William Harnach
2006-5-31
1229
Lassen
Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch).
Comment
CHSC29876
Berula erecta
Robin L. Ondericek
1978-8-8
119
Lassen
In water above the dam at Murrers Upper Meadow.
1548
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
CHSC5031
Bistorta bistortoides
L. B. Barlow
1967-7-14
121
Lassen
Along Susan River, W. side Calif. State Highway 44. 5 mi. S. Silver Lake Rd.
1828
Comment
CHSC117222
Blepharipappus scaber
Lowell Ahart; John Dittes
2016-6-7
20977
Lassen
20 yards west of the pond, along the road to 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
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
CHSC4779
Blepharipappus scaber
R. Carter
1967-6-27
555
Lassen
Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology station.
1584
Comment
JEPS108588
Blepharipappus scaber
L. P. Janeway
2005-7-4
8462
Lassen
High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41
1752
Comment
JEPS126561
Blepharipappus scaber
Lowell Ahart, John Dittes
2016-6-7
20977
Lassen
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 (air) southwest of Adin, hills at the southern slope of Big Valley.
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
UC577280
Blepharipappus scaber
David D. Keck and J. Clausen
1935-6-24
3733
Lassen
2 mi s of Ravendale
1463
Comment
OBI48164
Blepharipappus scaber
Rhonda Riggins
1989-4-27
1640
Lassen
US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale
1311
Comment
RSA647521
Blepharipappus scaber
Marion P. Harthill
1972-6-17
806
Lassen
Ravendale.
1646
Comment
SFV7758
Blepharipappus scaber
T. Gordon, K. Kimbrough
1975-8-15
1210
Lassen
16 miles south of Adin.
1402
Comment
SEINET7379359
Blepharipappus scaber subsp. scaber
J. A. Young
1982-6-9
s.n.
Lassen
Myers Ranch, Adin
1372
Comment
JEPS53205
Boechera
Leland S. Smith
1918-5-11
924
Lassen
Hayden Hill Modoc Forest
Comment
UC2046023
Boechera lincolnensis
Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting
2004-8-24
11189
Lassen
Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way.
Comment
JEPS53091
Boechera pauciflora
Jos. Grinnell
1928-6-16
Lassen
Eagle Lake
1584
Comment
UC1608995
Boechera pinetorum
Vernon H. Oswald and Lowell Ahart
1993-6-3
5488
Lassen
between Poison Lake and Susanville (Champs Flat Rd (Lassen 105, Forest 32N28Y), 7.0 mi n of its junction with Lassen 21 (32N02) to Eagle Lake, just s of ford over Pine Cr.)
1688
Comment
CHSC75356
Boechera puberula
Vernon H. Oswald
1999-5-7
9725
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead.
1420
Comment
CAS-BOT-BC14637
Boechera rectissima
John Thomas Howell; Gordon H. True
1973-7-31
50063
Lassen
Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range.
1783
Comment
CHSC91294
Boechera retrofracta
Lowell Ahart; John Dittes
2005-6-2
11926
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
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
JEPS111471
Boechera retrofracta
B. A. Roy, J. W. Kirchner
1996-5-11
Lassen
SE of Susanville, off highway 36. 9.8 miles up Gold Run Road (follow Richmond Rd. (E) to Gold Run Road (E) on side of Diamond Mtn.
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
UC1126562
Boechera sparsiflora
H. P. Hagge
1929-9-19
40
Lassen
Logan Mtn. Eagle Lake Quad.
1828
Comment
UC1542746
Boechera sparsiflora
Barbara Ertter with Gary Schoolcraft
1987-6-16
7180
Lassen
ca 1 mi w Hot Springs VABM (ne side of Honey Lake); Skeedaddle Mountains
1828
Comment
JEPS111475
Boechera sparsiflora
B. A. Roy, J. W. Kirchner
1996-5-11
Lassen
At intersection of Yellow Pine and Pine Needle. Drives up Jaynesville Grade, near Jaynesville (off highway 395 about 1 mile).
Comment
RSA166295
Boisduvalia glabella
Peter H. Raven, Otto T. Solbrig
1958-6-17
13289
Lassen
U. S. Highway 395, 1.8 miles south of Ravendale.
Comment
RSA0011460
Boisduvalia macrantha
Robert F. Thorne, Larry E. DeBuhr
1975-8-22
46980
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line.
1616
Comment
JEPS103163
Bolboschoenus maritimus
B. Corbin and D. Armentrout
2002-9-4
1098
Lassen
Biscar Reservoir, upper pond.
1357
Comment
CHSC76305
Bolboschoenus maritimus subsp. paludosus
Lowell Ahart; Vernon H. Oswald
1999-9-13
8221
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
SD197665
Brickellia microphylla
G. K. Helmkamp
1990-9-23
B 15
Lassen
Modoc Plateau: Susanville.
1189
Comment
UCD57489
Bromus briziformis
A. A. Beetle
1944-8-16
3017
Lassen
On east side of Horse Lake.
Comment
CAS-BOT-BC149585
Bromus carinatus var. carinatus
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville. Perkin's Ranch.
1463
Comment
CDA31386
Bromus carinatus var. carinatus
D. R. Hill
1968-7-8
Lassen
James R. Reynolds ranch, Revendale.
0
Comment
CAS-BOT-BC149158
Bromus carinatus var. marginatus
John Thomas Howell; Gordon H. True
1973-8-1
50199
Lassen
Sierra Nevada. Ca. 3 miles southeast of Disamond Mountain. East slope of Diamond Range south of Susanville.
2194
Comment
UCD59149
Bromus carinatus var. marginatus
H. P. Hagge
1929-9-16
s.n.
Lassen
Logan Mtn.
1828
Comment
POM115036
Bromus catharticus
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin's Ranch.
1463
Comment
CAS-BOT-BC155941
Bromus commutatus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49519
Lassen
Sierra Nevada. Elysian Valley, west of Janesville.
1325
Comment
JEPS109643
Bromus commutatus
Dean W. Taylor
2002-6-21
18169
Lassen
Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley
1310
Comment
JEPS96125
Bromus commutatus
Vernon H. Oswald and Lowell Ahart
1996-6-17
7788
Lassen
7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, trail at hwy 36 bridge spanning Susan River); Modoc Plateau, Bizz Johnson Trail
1402
Comment
UC1024715
Bromus hordeaceus
Leo Whitney
1935-5-20
3098
Lassen
14 mi w of Eagle Lake (Lassen National Forest, Harvey Valley, near dam); Lassen National Forest, Harvey Valley
1737
Comment
JEPS103200
Bromus japonicus
G. Schoolcraft
1995-6-6
2492
Lassen
Antelope Spring N of Skedaddle Mountains
1524
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
UC1024947
Bromus madritensis subsp. rubens
Leo Whitney
1935-6-21
3322
Lassen
13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley
Comment
RSA126867
Bromus marginatus
G. A. Fischer, I. H. Johnson
1933-7-12
F 231
Lassen
Patterson Flat. Lassen Forest.
Comment
UCD59065
Bromus orcuttianus
L. Whitney
1935-6-25
s.n.
Lassen
Ashurst Mt.
Comment
CHSC112781
Bromus tectorum
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18751
Lassen
Drainage filled with dirt from the 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
HSC79991
Bromus tectorum
William Rothstrom
1975-6-9
Lassen
Johnstonville, 0.25 mi. S of Hwy. 395, W of airport
Comment
UCD59756
Bromus tectorum
August L. Hormay
1932-5-20
s.n.
Lassen
Lassen National Forest. Hat Creek.
Comment
SEINET10515057
Bromus tectorum
Billy Joe Cox, David B. Dunn
1971-6-2
Cox 3117
Lassen
6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash.
1402
Comment
CAS-BOT-BC438313
Calandrinia ciliata
H. D. Ripley; R. C. Barneby
1942-6-14
5736
Lassen
Westwood
1554
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
JEPS120868
Callitriche heterophylla
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18750
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
RSA233787
Callitriche verna
R. F. Thorne, C. W. Tilforth
1969-9-5
39133
Lassen
Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139.
1433
Comment
SEINET3828391
Callitriche verna
R. F. Thorne, Larry E. De Buhr
1975-1
46986
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line.
1616
Comment
CAS-BOT-BC332740
Callitriche verna
R. F. Thorne; Larry E. DeBuhr
1975-8-22
46986
Lassen
Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line
1615
Comment
RSA67251
Calocedrus decurrens
Philip A. Munz
1951-9-15
16965
Lassen
On dry flats, 6 mi west of Bieber.
1341
Comment
SEINET8196128
Calochortus coeruleus
C. G. Gulling
1905-1
1535
Lassen
Big Meadows.
Comment
CHSC4921
Calochortus leichtlinii
L. G. Bennett
1967-6-24
24
Lassen
0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake.
1493
Comment
SBBG15290
Calochortus leichtlinii
H. and M. Dearing
1938-7-1
2237
Lassen
top of pass W of Susanville
1762
Comment
UC1523812
Calochortus leichtlinii
Gary Schoolcraft
1983-7-19
1096
Lassen
s slope Fredonyer Peak
2255
Comment
UC423015
Calochortus leichtlinii
Franklin P. Nutting
Lassen
Pine Creek
Comment
CAS-BOT-BC487965
Calochortus leichtlinii
Louella Bass
1973-6-3
93
Lassen
Elysian Valley
1325
Comment
CAS-BOT-BC487968
Calochortus leichtlinii
Marcus E. A M Jones
1897-7-8
s.n.
Lassen
Lassen's Peak
1828
Comment
JEPS124668
Calochortus leichtlinii
Laurel Loeblich
1964-6-30
59
Lassen
Highway 139 8.7 miles north of Susanville.
Comment
SD52068
Calochortus nuttallii
F. Stephens
1894-7-2
10337
Lassen
Robbins Creek.
Comment
HSC63826
Calyptridium monospermum
Teresa Prendusi
1980-7-1
Lassen
Champs Flat, 7 mi. W of northern tip of Eagle Lake
1677
Comment
CHSC30571
Calyptridium umbellatum
Sori H Shad
1970-6-25
32
Lassen
Found E. 2 mile past Murrer's Meadow on N. side of road in rocky soil.
1524
Comment
CHSC36436
Calyptridium umbellatum
Dave Lueck
1981-6-13
18
Lassen
Dirt road at base of N. E. side of Galletin Peak.
1584
Comment
CDA39903
Calystegia occidentalis subsp. occidentalis
T. C. Fuller
1965-6-3
13606
Lassen
Chemically treated railroad right of way, Susanville.
0
Comment
RSA0017409
Calystegia occidentalis subsp. occidentalis
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin's Ranch.
1463
Comment
UC1134560
Camassia quamash subsp. breviflora
A. Simontacchi
1940-5-17
736
Lassen
5.9 mi s of Patterson Mountain (Lassen National Forest); Lassen National Forest
1706
Comment
CAS-BOT-BC497554
Camassia quamash subsp. breviflora
Doris Kildale Gillespie
1930-5-13
9390
Lassen
Between Susanville and Janesville
Comment
HSC15435
Camassia quamash subsp. breviflora
Jim Vaughn
1956-7-13
Lassen
Drakesbad, Mt. Lassen Natl. Park
1738
Comment
SFV17867
Camassia quamash subsp. quamash
J. D. Dilley
1998-7-14
367
Lassen
Sierra Nevada Along CA-44, 1 mile west of Bogard Work Center; 29 miles northwest of Susanville.
1707
Comment
SEINET8197883
Camassia quamash var. breviflora
J. A. Young
1982-6-9
s.n.
Lassen
Meyer's Ranch, Adin.
1372
Comment
SEINET10480825
Camelina microcarpa
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17759
Lassen
Approx 12 mi s of adin on state hwy 139, in basalt and clay; along edge of rd on rolling knoll, in artemisia-juniper assoc.
1372
Comment
HSC69078
Camissonia boothii subsp. alyssoides
Gary Schoolcraft
1980-5-16
234
Lassen
N of Kiln on Wendel Hwy.
1280
Comment
NY851232
Camissonia claviformis var. cruciformis
A. A. Heller
1938-6-23
15211
Lassen
U.S. Highway #395, about midway between Mapes and Secret Valley
1372
Comment
HSC24653
Camissonia contorta
John Pratt
1970-6-14
18
Lassen
Comment
RSA17675
Camissonia parvula
Elmer I. Applegate
1934-5-4
8930
Lassen
Secret Valley
Comment
NY852074
Camissonia tanacetifolia
Mrs. C. C. Bruce
06 1898
2203
Lassen
Susanville
Comment
RSA74348
Camissonia tanacetifolia
Milo S. Baker
1952-5-23
12420
Lassen
Wet Spot, E of Chester, Hwy 36.
Comment
HSC63834
Camissonia tanacetifolia
Teresa Prendusi
1980-5-16
Lassen
6 mi. S of Ravendale and 1 mi. W of Hwy. 395
Comment
RSA125385
Camissonia tanacetifolia
Arthur R. Kruckeberg
1954-6-22
3322
Lassen
6 miles south of Likely along Highway 395
Comment
CAS-BOT-BC160863
Camissonia tanacetifolia subsp. tanacetifolia
John Thomas Howell
1934-7-8
12505
Lassen
Spalding's, Eagle Lake
Comment
RSA18258
Camissonia tanacetifolia subsp. tanacetifolia
Carl B. Wolf
1929-9-1
3784
Lassen
Mt. Lassen Nat l Park, between Grassy Lake and Snag Lake.
Comment
RSA512846
Camissonia tanacetifolia subsp. tanacetifolia
J. T. Howell, Gordon H. True
1973-8-1
50209
Lassen
Sierra Nevada: Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville.
2165
Comment
CAS-BOT-BC160861
Camissonia tanacetifolia subsp. tanacetifolia
Raymond Nelson
1962-8-25
s.n.
Lassen
Lassen Volcanic National Park. On the east shore of Snag Lake
Comment
UC773929
Capsella bursa-pastoris
L. R. Short and J. Warren
1936-6-9
S 408
Lassen
Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range
1844
Comment
RSA592547
Cardamine breweri var. breweri
S. O. Mattoon
1978-7-10
24
Lassen
Lassen County, Blue Lake Camp Ground: 17 miles E of Likely, Southern Warner Mtns, Modoc N Fork.
1890
Comment
UC1494954
Cardamine nuttallii
Reed C. Rollins and Kathryn W. Rollins
1981-5-30
81166
Lassen
Gold Run Road toward Sky Line Drive 10 mi s Susanville; s of Susanville
Comment
RSA149125
Cardaria pubescens
I. L. Wiggins, Dorothy Wiggins
1961-6-16
16529
Lassen
4.1 miles E of Bieber.
Comment
JEPS63614
Carex angustata
Leland S. Smith
1922-7-30
68
Lassen
Martin Spring Meadow Lassen National Forest
Comment
CHSC89754
Carex athrostachya
L. P. Janeway
2004-6-26
8158
Lassen
High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest.
1767
Comment
UC50815
Carex athrostachya
J. Burtt Davy
Jun 17-24 1897
3298
Lassen
Honey Lake Valley, slough near Dr. Witt's
Comment
CDA33034
Carex barbarae
T. C. Fuller
1963-7-15
10892
Lassen
South of road to Pittsville, 5.4 miles northwest of Little Valley.
0
Comment
UC2015834
Carex breweri
Ron Mastrogiuseppe, Joy Mastrogiuseppe
1986-8-2
4443
Lassen
Lassen Volcanic National Park. Lassen Peak, near parking area.
Comment
UC1537637
Carex douglasii
Gordon H. True Jr.
1939-6-15
996
Lassen
w Grasshopper Lake; Bullard Lake
Comment
CAS-BOT-BC19780
Carex douglasii
H. D. Ripley; R. C. Barneby
1943-6-14
5145
Lassen
Hidden Valley, E of Susanville.
1584
Comment
UC1609197
Carex filifolia var. erostrata
Vernon H. Oswald and Lowell Ahart
1993-6-3
5472
Lassen
Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville)
1725
Comment
CAS-BOT-BC20164
Carex filifolia var. erostrata
Lassen 1927 G. S. Crew
1927-7-15
60
Lassen
Lassen Forest.
1691
Comment
SEINET7558599
Carex filifolia var. erostrata
John Thomas Howell
1934-7-6
12451
Lassen
Harvey Valley.
Comment
JEPS28382
Carex heteroneura
George W. Gillett
1957-7-28
937
Lassen
along s margin, Widow Lake Lassen Volcanic National Park, Widow Lake
2072
Comment
SEINET7561726
Carex hoodii
L. P. Janeway
2003-7-24
7917
Lassen
Swain Mountain 7.5' quad. 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.
1932
Comment
SEINET7561698
Carex hoodii
George W. Gillet
1957-7-29
946
Lassen
Lassen Volcanic National Park, along trail between Snag Lake and Butte Lake.
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
JEPS120111
Carex integra
Lowell Ahart, John Dittes
2012-7-9
18299
Lassen
About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
HSC95182
Carex interior
Gordon Leppig
1998-8-17
1055
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
UC1594638
Carex lenticularis var. impressa
Vernon H. Oswald and Lowell Ahart
1992-7-16
5115
Lassen
swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek
1719
Comment
HSC103598
Carex leporinella
Thomas W. Nelson, Jane Nelson
1985-8-10
8012
Lassen
Along north side of Silver Lake campground
1829
Comment
CDA33106
Carex limosa
Gordon Leppig, J. Cromwell
1997-7-27
610
Lassen
Modoc National Forest. Blue Lake Ranch.
Comment
UC1609199
Carex livida
Vernon H. Oswald and Lowell Ahart
1993-8-3
5742
Lassen
e Silver Lake (just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp
1932
Comment Read comments May 19 2014
UC2015854
Carex microptera
Ron Mastrogiuseppe, Joy Mastrogiuseppe
1986-8-2
4447
Lassen
Lassen Volcanic National Park. Lassen Peak, above parking area.
Comment
CHSC87113
Carex multicaulis
L. P. Janeway
2001-6-20
7207
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
SEINET7568737
Carex nebrascensis
L. P. Janeway
2003-7-24
7913
Lassen
Pegleg Mountain 7.5' quad. 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
UC1133502
Carex nebrascensis
Robert W. Gardner
1939-6-6
G- 29
Lassen
Little Harvey Valley Halls Flat Quadrangle
Comment
UC1142949
Carex nebrascensis
A. L. Hormay
1941-6-18
7
Lassen
Little Harvey Valley Lassen National Forest
1676
Comment
CHSC66413
Carex pellita
Vernon H. Oswald; Lowell Ahart
1996-6-17
7809
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville.
1420
Comment
CHSC75552
Carex pellita
Vernon H. Oswald; Lowell Ahart
1999-6-9
9738
Lassen
Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395.
1353
Comment
SEINET10817202
Carex phaeocephala
Willard W. Eggleston
1927-7-11
Eggleston 21474
Lassen
Bogard Ranger Station, Lassen Forest.
1500
Comment
CHSC108016
Carex praegracilis
Lowell Ahart; John Dittes
2011-6-20
17477
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
CDA33131
Carex praegracilis
T. C. Fuller
1980-8-6
20319
Lassen
North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale.
0
Comment
CHSC54424
Carex raynoldsii
Vernon H. Oswald
1991-6-25
4695
Lassen
Lassen Volcanic National Park. Butte Lake-Snag Lake Trail, just south of its junction with Butte Lake-Widow Lake Trail, in the northeast corner of the park.
1842
Comment
CHSC53538
Carex rossii
L. P. Janeway; Gary Benson, Randy Harrison
1984-8-23
1057 B
Lassen
On southwest side of Blue Lake.
1889
Comment
HSC48183
Carex rossii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19243
Lassen
2 mi. N of Westwood
Comment
HSC48221
Carex rossii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19176
Lassen
Harvey Valley near Cone Springs
Comment
HSC48339
Carex rossii
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19176
Lassen
Harvey Valley near Cone Springs
Comment
CAS-BOT-BC117700
Carex simulata
Alice Eastwood; John Thomas Howell
1940-6-15
8305
Lassen
Willow Creek near Hayden Hill.
Comment
UC1142962
Carex straminiformis
A. L. Hormay
1941-6-19
25
Lassen
Squaw Valley Lassen National Forest
1737
Comment
JEPS28384
Carex subfusca
George W. Gillett
1957-7-26
911
Lassen
lake shore near ne arm of Butte Lake; Lassen Volcanic National Park, Butte Lake
1844
Comment
CAS-BOT-BC116608
Carex subfusca
Hans Leschke
1959-8-10
1641
Lassen
Above Emerald Lake
2438
Comment
CAS-BOT-BC116614
Carex subfusca
Hans Leschke
1954-7-3
s.n.
Lassen
Border of swamp north of Willow Lake.
1661
Comment
CAS-BOT-BC116616
Carex subfusca
B. Clear
1938-7-13
s.n.
Lassen
Dersch Meadows, Lassen Park.
2016
Comment
JEPS28336
Carex utriculata
George W. Gillett
1957-7-22
885
Lassen
near campsite at s end of lake; Lassen Volcanic National Park, Snag Lake
1850
Comment
CAS-BOT-BC115281
Carex utriculata
L. S. Smith
1918-8-11
1020
Lassen
Lost Lake.
Comment
CAS-BOT-BC115283
Carex utriculata
Ray Hanson
1954-8-23
s.n.
Lassen
Lassen Park, near Jackey Lake.
Comment
HSC103651
Carex utriculata
Thomas W. Nelson, Jane Nelson
1985-8-10
8009
Lassen
Along north side of Silver Lake
1829
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-BC248971
Castilleja
Margaret M. Hanna
1956-6-3
943
Lassen
2 mi. West of Nubieber
Comment
CHSC106570
Castilleja angustifolia
K. Schierenbeck
2008-5-3
Lassen
Fort Sage Mtns.
1439
Comment
HSC20562
Castilleja angustifolia
M. L. Stuart
1965-5-2
56
Lassen
2 mi. N of Termo. on Hwy. 395
1829
Comment
CAS-BOT-BC249611
Castilleja applegatei subsp. pinetorum
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50645
Lassen
South and southeast of Diamond Mt.
2286
Comment
CAS-BOT-BC249613
Castilleja applegatei subsp. pinetorum
G. Schoolcraft
1987-5-6
1699
Lassen
North end of Eagle Lake near Stone Ranch
1554
Comment
CHSC106084
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
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
CHSC36484
Castilleja applegatei subsp. pinetorum
Margaret E. Halloran
1982-6-3
5
Lassen
3 1/2 mi s of jct of forest service roads 5.16 and 5.17.
Comment
CHSC60412
Castilleja applegatei subsp. pinetorum
Mary Ann Showers
1992-6-13
2538
Lassen
Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake.
1828
Comment
CHSC7750
Castilleja applegatei subsp. pinetorum
Beverley J. Wise
1969-5-4
105
Lassen
4 mi. north of Susanville on Hwy 139 (Antelope Grade).
1371
Comment
RSA747544
Castilleja applegatei subsp. pinetorum
K. M. Meyer, A. Townesmith
2007-7-23
152
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
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-BC243710
Castilleja applegatei var. pinetorum
Clarence R. Quick
1961-6-21
61 -31
Lassen
Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak
1798
Comment
UC1563850
Castilleja arachnoidea
Barbara Ertter
1988-7-25
7861
Lassen
ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville, ridge of Diamond Mts); Diamond Mts.
2286
Comment
JEPS3595
Castilleja campestris subsp. campestris
Helen-Mar Wheeler
1952-7-11
Lassen
s of Madeline
Comment
UC604559
Castilleja campestris subsp. campestris
C. W. Sharsmith
1938-7-18
3631
Lassen
2 mi s Madeline; Madeline Plains
Comment
SEINET3159144
Castilleja chromosa
J. L. Strother
1970-5-23
954
Lassen
about 6 mi N of Honey Lake
1280
Comment
JEPS81867
Castilleja lacera
L. R. Heckard with J. C. Hickman
1982-5-11
5841
Lassen
about 2.5 mi w Paynes Creek (along Highway 36 to Mt Lassen (6.5 mi ne of Dales))
518
Comment
HSC63893
Castilleja linariifolia
Teresa Prendusi
1980-7-1
Lassen
McCoy Flat, 5 mi. E of northern tip of Eagle Lake
1646
Comment
CAS-BOT-BC244886
Castilleja miniata
Louella Bass
1973-6-17
116
Lassen
Elysian Valley. Plants of the Sierra Nevada
1325
Comment
JEPS9846
Castilleja miniata
W. L. Jepson
1918-8-2
7793
Lassen
Honey Lake Valley
1219
Comment
CAS-BOT-BC240999
Castilleja pilosa
Alice Eastwood
1940-6-15
8318
Lassen
Said Valley
Comment
HSC26597
Castilleja pilosa
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19190
Lassen
Harvey Valley near Cone Springs
Comment
HSC82214
Castilleja pilosa
Thomas W. Nelson, Jane P. Nelson
1980-7-6
5995
Lassen
Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley
1555
Comment
SBBG7071
Castilleja pilosa
H. and M. Dearing
1939-6-6
3566
Lassen
Pitt River, near Bieber
Comment
UC1483790
Castilleja pilosa
Mary Meyer
1980-7-1
Lassen
Champs Flat
1677
Comment
CHSC99526
Castilleja tenuis
Lowell Ahart; John Dittes
2008-6-20
14944
Lassen
In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
JEPS107313
Castilleja tenuis
Lowell Ahart, John Dittes
2005-6-1
11902
Lassen
On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction
1459
Comment
RSA0059451
Castilleja tenuis
Lowell Ahart, John Dittes
2011-6-20
17499
Lassen
About 15 yards west 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
UC1483853
Castilleja tenuis
G. Schoolcraft
1980-7-16
316
Lassen
near Nelson Corral Reservoir
1804
Comment
JEPS103212
Castilleja tenuis
G. Schoolcraft
1993-6-29
2314
Lassen
Ash Valley RNA 16 miles east of Adin, CA
1554
Comment
RSA339727
Ceanothus cordulatus
F. R. Fosberg
1969-8-16
51426
Lassen
(California Registered Historical Landmark 678) 10 mi. west of Susanville.
Comment
CHSC4984
Ceanothus prostratus
R. Clicquennoi
1967-7-4
5
Lassen
5 mi s of Eagle Lake Biology Station on Gallatin Beach Rd.
Comment
JEPS118451
Ceanothus prostratus
Lowell Ahart, John Dittes
2011-6-20
17496
Lassen
Forest floor, about 40 yards west of the stream, about 300 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
RSA38478
Ceanothus prostratus
P. A. Munz
1947-5-18
11864
Lassen
Fredonyer Forestry Public Camp Ground, west of Susanville.
1509
Comment
UC727092
Ceanothus prostratus
A. A. Heller
1941-6-26
16230
Lassen
on roadside banks on the ridge w Nieubieber; w of Nieubierber
Comment
CHSC5047
Ceanothus velutinus
L. B. Barlow
1967-7-1
64
Lassen
5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road.
1554
Comment
CHSC6287
Ceanothus velutinus
R. Clicquennoi
1967-7-1
37
Lassen
Four miles s of Eagle Lake Biology Station off Gallatin Beach Road.
1554
Comment
HSC22955
Ceanothus velutinus
John Pratt
1970-6-21
28
Lassen
1738
Comment
UC1071531
Ceanothus velutinus
A. Simontacchi
1940-6-4
797
Lassen
7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle
Comment
UCD130022
Centaurea diffusa
T. C. Fuller
1962-8-28
9481
Lassen
east side of Highway 395 to Madelaine, 1.9 mile north of Termo.
Comment
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
RSA516348
Centaurium exaltatum
Barbara Ertter
1987-7-24
7305
Lassen
ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road.
1524
Comment
CHSC99741
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
HSC23531
Ceratophyllum demersum
R. Carter
1967-7-13
593
Lassen
5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek
1561
Comment
UC8815
Ceratophyllum demersum
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3324
Lassen
Honey Lake Valley; near DeWitt's
1219
Comment
SEINET10483778
Cercocarpus ledifolius
Mary Susan Taylor
1974-5-4
Taylor 226
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
UC452575
Cercocarpus ledifolius var. ledifolius
Mrs. R. M. Austin
1879-1
Lassen
Comment
JEPS96027
Chaenactis douglasii
Vernon H. Oswald and Lowell Ahart
1996-6-17
7775
Lassen
ca. 7 mi w Susanville (at bridge spanning river on n side of Hwy 36, and along the Bizz Johnson Trail, accessed at Devils Corral Trailhead off hwy); Modoc Plateau, Susan River
1432
Comment
CDA19743
Chaenactis douglasii
D. Tillotson
1942-6-1
s.n.
Lassen
Modoc Plateau; Between Ravendale and Secret Valley.
0
Comment
CAS-BOT-BC276614
Chaenactis douglasii var. douglasii
Louella Bass
1978-7-11
78 -10
Lassen
Elysian Valley
1325
Comment
CAS-BOT-BC276616
Chaenactis douglasii var. douglasii
John Thomas Howell
1955-7-19
30813
Lassen
E side of Beckwourth Pass
1493
Comment
CHSC105256
Chaenactis douglasii var. douglasii
Lowell Ahart; John Dittes
2010-7-31
16984
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
CHSC4432
Chaenactis douglasii var. douglasii
K. R. Stern
1967-7-1
2457
Lassen
Ca. 14 mi. NE of Susanville. State Hwy. 139.
Comment
SEINET7450297
Chaenactis stevioides
F. B. Headley
1915-5-28
s.n.
Lassen
Honeylake
Comment
CAS-BOT-BC141744
Chamaebatiaria millefolium
John Thomas Howell
1934-7-9
12519
Lassen
Pine Creek Flat
Comment
CHSC19727
Chamaebatiaria millefolium
Mary E. Meyer
1973-7-7
14
Lassen
Located west of ELBS water tower.
Comment
CHSC4857
Chamaebatiaria millefolium
R. Carter
1967-7-13
588
Lassen
On the rd to Eagle Lake, Biology Station and Willow Creek.
1584
Comment
CHSC4937
Chamaebatiaria millefolium
W. Lessig
1967-7-15
30
Lassen
1/8 mi se of Eagle Lake Biology Station.
1554
Comment
CHSC117544
Chamaesyce serpillifolia subsp. serpillifolia
Lowell Ahart; John Dittes
2016-7-13
21130 A
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 Valley.
1289
Comment
CHSC66385
Chamaesyce serpillifolia subsp. serpillifolia
Vernon H. Oswald; Lowell Ahart
1996-6-17
7771
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post.
1432
Comment
UC62593
Cheilanthes intertexta
Baker and Nutting
1894-7-3
Lassen
Dixey Mts
Comment
SD211585
Chenopodium berlandieri
Barbara Ertter
1987-7-24
7301
Lassen
Circa 3/4 mile East-Northeast of Beckwourth Pass at end of old crumbling paved road.
1524
Comment
UC1587041
Chenopodium fremontii
G. Schoolcraft
1991-7-31
2206
Lassen
just s of Shinn Peak
2103
Comment
CAS-BOT-BC451355
Chimaphila menziesii
Clare B. Hardham
1971-8-22
18388
Lassen
Diamond Mountain: North slopes
2133
Comment
CAS-BOT-BC39672
Chorispora tenella
Gary Schoolcraft
1982-3-24
624
Lassen
Lower end of Amedee Canyon.
1280
Comment
SBBG18321
Chorizanthe watsonii
C. B. Hardham
1961-6-17
7499
Lassen
Baxter Crk, S of Susanville
1524
Comment
UC1137593
Chrysothamnus humilis
L. R. Short and J. Warren
1936-8-17
S- 495
Lassen
Burgess Spr. Exp. Range Lassen Forest
1760
Comment
RSA3395
Chrysothamnus nauseosus subsp. consimilis
C. B. Wolf
1931-9-5
2401
Lassen
0.75 mile east of Termo
1646
Comment
SEINET4671623
Chrysothamnus nauseosus subsp. consimilis
Carl B. Wolf
1932-7-18
Lassen
Big Valley, 2 6/10 miles from Bieber on road to; Alturas.
1268
Comment
JEPS21409
Chrysothamnus viscidiflorus subsp. viscidiflorus
W. L. Jepson
1918-8-4
7813
Lassen
e of Eagle Lake; Horse Lake
1554
Comment
OBI5967
Chrysothamnus viscidiflorus subsp. viscidiflorus
Carl B. Wolf
1931-9-4
2396
Lassen
Big Valley, 2.6 mi from Bieber on the road to Alturas
1268
Comment
SEINET5727104
Chrysothamnus viscidiflorus subsp. viscidiflorus
Lowell E. Urbatsch, Vesna Karaman, Castro
2000-1
7713
Lassen
Collected along Forest Road 37N11, off CA Hwy 139.; Modoc National Forest
1555
Comment
CAS-BOT-BC162753
Chylismia claviformis subsp. cruciformis
G. H. True
1937-7-10
791
Lassen
Skeedaddle
Comment
CHSC64794
Chylismia claviformis subsp. cruciformis
Vernon H. Oswald
1995-5-24
6759
Lassen
Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of the Amedee Mtns.
1280
Comment
SEINET10725178
Cichorium intybus
Karen M. Meyer, Andrew Townesmith
2007-7-19
Meyer 133
Lassen
Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek.
1459
Comment
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
CDA1166
Cirsium cymosum
T. C. Fuller
1959-7-7
2762
Lassen
Hwy 395; 1.7 mi. south of Ravendale.
0
Comment
JEPS30610
Cirsium cymosum var. cymosum
Peter H. Raven with Otto T. Solbrig
1958-6-17
13279
Lassen
13.1 mi s Ravendale (along U.S. Highway 395)
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
JEPS30608
Cirsium douglasii var. breweri
Peter H. Raven and Otto T. Solbrig
1958-6-17
13280
Lassen
13.1 mi s Ravendale (along U.S. Highway 395)
Comment
CHSC116356
Cirsium inamoenum
J. R. Keck Jr.; D. L. Haws
1980-7-22
PDR 330194
Lassen
Ravendale, BLM rangeland.
1625
Comment
CAS-BOT-BC280057
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
CDA1527
Cirsium ochrocentrum
T. C. Fuller
1966-7-22
14982
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
CDA1528
Cirsium ochrocentrum
T. C. Fuller
1966-7-22
14983
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-BC280422
Cirsium ochrocentrum
Lee Wheeler
1950-10-1
s.n.
Lassen
Clarence Hoffman Ranch
Comment
CAS-BOT-BC280429
Cirsium ochrocentrum
T. C. Fuller
1965-10-13
14199
Lassen
E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo
Comment
CDA37705
Cirsium ochrocentrum
Robin Breckenridge
2006-8-15
s.n.
Lassen
Madeline Plains, Westside Road, old Basque homestead.
0
Comment
CDA37712
Cirsium ochrocentrum
Breckenridge/Filippini
2007-6-13
s.n.
Lassen
Madeline Plains, western edge, along Westside Road, old Basque homestead.
0
Comment
CAS-BOT-BC286307
Cirsium scariosum
John Thomas Howell
1976-7-20
52025
Lassen
Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass
1432
Comment
CAS-BOT-BC286309
Cirsium scariosum
Louella Bass
1973-6-17
117
Lassen
Elysian Valley
1325
Comment
JEPS109645
Cirsium scariosum
Dean W. Taylor
2002-6-21
18176
Lassen
Windmill Flat (lying ca. 1.5 mi NW of Snider Lake), north end of the flat near the base of the windmill
1706
Comment
CDA1562
Cirsium scariosum var. americanum
D. Chambers, M. Carstens
1979-8-22
s.n.
Lassen
Modoc National Forest, private inholding, south side of Juniper Creek.
0
Comment
CDA20242
Cirsium undulatum
G. D. Barbe
1984-8-2
4186
Lassen
Madeline Plains; Just e of Westside Rd, 3 mi no f Termo-Grasshopper Rd., Madeline Plains, along e base of Dry Valley Ridge.
1615
Comment
CHSC7631
Cirsium vulgare
Beverley J. Wise
1968-8-23
16
Lassen
10 mi. N.W. of Susanville on the Las. Co. Rd. 201.
1798
Comment
CAS-BOT-BC163164
Clarkia lassenensis
A. M. Vollmer; L. Beane
1953-7-1
98
Lassen
Along Halls Flat road, beginning 6 mi. W of Susanville to McArthur
1554
Comment
JEPS108559
Clarkia lassenensis
L. P. Janeway
2005-7-3
8452
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
CAS-BOT-BC163166
Clarkia lassenensis
G. Schoolcraft
1993-6-29
2308
Lassen
Ash Valley RNA between Adin & Madeline
1554
Comment
POM260406
Clarkia lassenensis
C. L. Hitchcock
1940-5-26
6610
Lassen
Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River.
1372
Comment
CHSC66394
Clarkia rhomboidea
Vernon H. Oswald; Lowell Ahart
1996-6-17
7780
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 between the trail and highway bridges spanning the Susan River.
1432
Comment
UC1122437
Clarkia rhomboidea
A. Simontacchi
1940-6-23
885
Lassen
3.2 mi sw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle
Comment
CHSC59559
Clarkia stellata
Mary Meyer
1980-7-1
Lassen
Along road traversing southern end of McCoy Flat.
1645
Comment
CAS-BOT-BC440042
Claytonia perfoliata subsp. perfoliata
Louella Bass
1973-4-23
25
Lassen
Elysian Valley.
1325
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
JEPS118455
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
NY242101
Cleomella hillmanii
G. Schoolcraft
1989-5-31
1883
Lassen
3 mi. N. Wendel Rd. along Skedaddle Ranch Rd.
1463.0
Comment
UC1587089
Cleomella parviflora
G. Schoolcraft
1991-7-22
2178
Lassen
s of Smoke Creek Road (just w of CA/NV line)
1341
Comment
NY242362
Cleomella plocasperma
G. Schoolcraft
1986-6-11
1620
Lassen
About 1 mile west of CA-NV stateline along Smoke Creek Road.
1341.1
Comment
UC1533121
Cleomella plocasperma
G. Schoolcraft
1986-6-11
1620
Lassen
about 1 mi w CA-NV stateline (along Smoke Creek Road)
1341
Comment
CHSC7757
Collinsia parviflora
Beverley J. Wise
1969-4-26
102
Lassen
2 mi. north of Susanville on Hwy 139.
1341
Comment
RSA0035917
Collinsia parviflora
Lowell A. Ahart, John Dittes
2008-6-20
14916
Lassen
About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
UC1032573
Collinsia parviflora
A. Simontacchi
1940-5-10
691
Lassen
7.3 mi w of Harvey Mountain Lookout (Lassen National Forest); Lassen National 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
RSA0117240
Collinsia parviflora
L. R. Short
1936-5-7
S- 344
Lassen
MDM, Burgess Spring Experiment Range.
1738
Comment
CHSC5903
Collinsia torreyi
M. West
1946-6-24
Lassen
Dow Butte Road. Eagle Lake.
1828
Comment
HSC75886
Collinsia torreyi
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19258
Lassen
Harvey Valley near Cone Springs
Comment
OBI77560
Collomia grandiflora
Anthony Baniaga
2011-7-5
419
Lassen
Lassen Natl Forest. E of Willard Ck. Fredonyer Pass quad T29N R10e sec 25 NE of NW
Comment
SEINET12326975
Collomia grandiflora
Unknown
1978-1
57
Lassen
Lower Dry Lakes, E of Eagle L
1646
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
CHSC6200
Collomia tinctoria
1946-6-13
Lassen
Eagle Lake.
1584
Comment
UC1601297
Collomia tinctoria
Franklin P. Nutting
Lassen
Pine Creek
Comment
UC1567424
Comandra umbellata subsp. californica
G. Schoolcraft
1989-6-7
1908
Lassen
Shaffer Mountain near top Shaffer Mountain
2011
Comment
CHSC66260
Comarum palustre
Vernon H. Oswald; Lowell Ahart
1996-6-24
7891
Lassen
Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the springs on the E side of the meadow.
1633
Comment
HSC95148
Comarum palustre
Gordon Leppig
1998-7-12
934
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
UC1483855
Corallorhiza striata
G. Schoolcraft
1980-7-15
309
Lassen
w Bieber; Big Valley Mountain Timber Sale area
1798
Comment
UC761815
Cordylanthus ramosus
R. F. Hoover
1940-10-1
4655
Lassen
Jonesville
Comment
CAS-BOT-BC401848
Corydalis caseana subsp. caseana
John Thomas Howell; Gordon H. True
1973-8-1
50237
Lassen
Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville
2133
Comment
CHSC93564
Crepis acuminata
Lowell Ahart; John Dittes
2005-6-2
11933
Lassen
Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction.
1498
Comment
UC581280
Crepis acuminata
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-14
2344
Lassen
1 mi sw Grasshopper Valley
1645
Comment
CAS-BOT-BC290392
Crepis acuminata
G. L. Stebbins, Jr.; J. A. Jenkins
1937-7-10
2294
Lassen
South slope Thompson Peak, south of Janesville
2133
Comment
CHSC118479
Crepis acuminata
Don Lepley
2016-6-21
Lassen
Lassen National Forest. Hat Creek Ranger District. Flat west of Blacks Mt., 0.2 mile west of junction of Roads 34N07 and 34N05Y. UTM 648055.1 E x 4515134.8N.
1726
Comment
SEINET10474584
Crepis bakeri subsp. cusickii
Mary Susan Taylor
1982-5-29
Taylor 4562
Lassen
T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft.
1493
Comment
UC581207
Crepis intermedia
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-14
2340
Lassen
s-facing slope 3 mi e Champs
1780
Comment
UC581208
Crepis intermedia
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-8
2216
Lassen
just w ridge crest between Willow Creek Valley and Horse Lake
524
Comment Read comments Jul 18 2007
UC581246
Crepis modocensis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2298
Lassen
w Milford (crest of range head of ridge); Stony Ridge
1930
Comment
POM17694
Crepis modocensis subsp. subacaulis
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt. Susanville. Perkin's Ranch.
2226
Comment
UC581270
Crepis modocensis subsp. subacaulis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2276
Lassen
Diamond Mt.; summit and e slope
Comment
UC581194
Crepis occidentalis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2303
Lassen
w Milford (crest of range head of ridge); Stony Ridge
1930
Comment
UC581242
Crepis occidentalis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-9
2259
Lassen
bare summit ridge and ridges sw Diamond Mt. (s of Susanville)
Comment
UC581277
Crepis occidentalis
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2319
Lassen
about a mi below summit; Black Mountain
1940
Comment
CAS-BOT-BC376460
Crepis occidentalis subsp. pumila
James Jokerst
1983-7-23
1868
Lassen
Near Madeline Plains
1614
Comment
POM70805
Cressa truxillensis
Marcus E. Jones
1897-6-23
s.n.
Lassen
Amedee.
1220
Comment
CHSC60650
Crocidium multicaule
Vernon H. Oswald; Lowell Ahart
1993-4-17
5275
Lassen
Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber.
1264
Comment
UCD54541
Crypsis schoenoides
Ellen Dean; Petra Unger, Dawn Cunningham
2005-10-10
2725
Lassen
E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area.
1246
Comment
RSA233758
Crypsis vaginiflora
R. F. Thorne, C. W. Tilforth
1969-9-6
39255
Lassen
along Long Valley Creek, c. 14 mi. SE of Milford.
1311
Comment
CAS-BOT-BC189240
Cryptantha
John Thomas Howell
1977-6-22
52403
Lassen
N end of Eagle Lake
1584
Comment
CHSC29917
Cryptantha affinis
Robin L. Ondricek
1978-7-22
108
Lassen
1977 Burn area, 1.8 mi e of Coleman Rd. on Lassen Co. Road A1.
1950
Comment
CHSC64840
Cryptantha ambigua
Vernon H. Oswald
1995-6-26
6918
Lassen
Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline.
1652
Comment
SDSU20523
Cryptantha ambigua
Nuri Benet-Pierce, John P. Pierce
2012-7-14
523
Lassen
Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08.
1724
Comment
SEINET10972821
Cryptantha ambigua
Jeffrey Huber
1971-6-2
Huber 126
Lassen
Approx. 30 mi N of Susanville, on CA Hwy 139, in basalt; Pinus-Artemesia-Juniper Assoc.
1646
Comment
UCD119054
Cryptantha ambigua
Robbins; Raynor
1943-6-1
s.n.
Lassen
Madeline.
Comment
CHSC7765
Cryptantha circumscissa
Beverly J. Wise
1969-5-18
77
Lassen
17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215.
1524
Comment
CHSC91313
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
UCD54568
Cryptantha circumscissa
Ellen Dean; Dawn Cunningham
2005-10-25
2751
Lassen
East of the town of Susanville. Property N of California Correctional Facility.
1248
Comment
POM73157
Cryptantha crassisepala var. elachantha
Marcus E. Jones
1897-6-22
s.n.
Lassen
10 miles south of Amedee. [Lassen or Plumas Co.?]
1220
Comment
SDSU20525
Cryptantha echinella
Nuri Benet-Pierce, John P. Pierce
2012-7-14
526
Lassen
Diamond Mountain.
2023
Comment
NY1111960
Cryptantha gracilis
G. Schoolcraft
1984-6-4
1193
Lassen
Wendel Canyon
1524
Comment
JEPS95974
Cryptantha humilis
Vernon H. Oswald and L. Ahart
1999-6-9
9743
Lassen
Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate
1353
Comment
SEINET8545983
Cryptantha intermedia var. grandiflora
J. A. Young
1982-6-7
s.n.
Lassen
Redlands.
1676
Comment
SDSU20202
Cryptantha schoolcraftii
Ronald B. Kelley
2005-5-26
886
Lassen
South end of Coppersmith Hills, on top edge of north-to-south running canyon of west facing steep slopes, 0.75 miles north of Tuledad Valley Road (CR506), T37N R17E sec.35 NE1/4 of NW1/4. Also found at 41 deg. 02.022'N, 120 deg. 0.529'W (WGS64), 5540' elev.
1715
Comment
CHSC92722
Cryptantha torreyana
L. P. Janeway
2005-7-3
8449
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
HSC68930
Cryptantha watsonii
Gary Schoolcraft
1980-5-7
219
Lassen
On Honey Lake Island
1220
Comment
JEPS47106
Cuscuta californica
Brown and Wieslander
1922-8-20
85
Lassen
Martin Springs Eagle Lake
Comment
CDA39916
Cuscuta californica var. breviflora
T. C. Fuller
1963-7-16
10922
Lassen
Hwy 395 to Ravendale, 10 miles north of Litchfield.
0
Comment
JEPS124897
Cuscuta pentagona
Peter Schultz
1967-7-11
67
Lassen
2 miles north of Doyle.
Comment
UC22937
Cycladenia humilis var. humilis
Milo S. Baker
1894-7-30
Lassen
Silver Lake
Comment
CHSC43469
Cynoglossum occidentale
Lowell Ahart; John Thomas Howell
1974-7-9
515
Lassen
Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville.
1584
Comment
UC1587038
Cynoglossum occidentale
G. Schoolcraft
1991-7-30
2192
Lassen
Bear <Sring> on n. side of widow Mt.
1780
Comment
JEPS127269
Cyperus squarrosus
Lowell Ahart, John Dittes
2016-7-13
21139
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
UC569547
Cyperus squarrosus
H. S. Yates
1936-8-11
6065
Lassen
Baxter Creek Susanville Quad., Baxter Creek
1280
Comment
CAS-BOT-BC208395
Dalea ornata
Gary Schoolcraft
1984-6-28
1280
Lassen
NW of Shaffer Mtn., on the tablelands
1402
Comment
CAS-BOT-BC445517
Damasonium californicum
Arnold Tiehm; Gary Schoolcraft
1984-8-14
9245
Lassen
Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line
1698
Comment
JEPS32207
Damasonium californicum
J. B. Davy
Jun 17 1897-Jun 24 1897
3335
Lassen
Honey Lake Valley, Susan R.
1219
Comment
CAS-BOT-BC445519
Damasonium californicum
C. L. Hitchcock
1940-5-26
6646
Lassen
Overflow of Pitt River, 1 mile west of Bieber.
Comment
UCD138002
Damasonium californicum
Calvin McMillan; Malcom A. Nobs
1949-6-15
784
Lassen
Nubieber.
Comment
GMDRC7740
Danthonia californica
J. M. Andre, G. Clifton
1993-6-11
33421
Lassen
Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale
1545
Comment
HSC68921
Danthonia californica
Gary Schoolcraft
1980-7-28
329
Lassen
E of Tule Mountain and S of Blue Lake.
2043
Comment
POM115072
Danthonia californica
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville.
1524
Comment
POM172479
Danthonia californica var. americana
Franklin P. Nutting
1894-7-12
s.n.
Lassen
Pine Creek
Comment
CHSC66420
Danthonia unispicata
Vernon H. Oswald; Lowell Ahart
1996-6-17
7803
Lassen
Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post.
1420
Comment
HSC69064
Danthonia unispicata
Gary Schoolcraft
1980-7-28
332
Lassen
Meadow E of Tule Mountain.
2043
Comment
UC1024799
Danthonia unispicata
Leo Whitney
1935-6-24
3298
Lassen
ca 13 mi w north end of Eagle Lake; Squaw Valley
Comment
CHSC106590
Delphinium andersonii
C. Dow; D. Garrison
2008-5-3
Lassen
Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs.
1439
Comment
CAS-BOT-BC33220
Delphinium armeniacum
Amos Arthur Heller
1938-6-4
15149
Lassen
1 mile E of Fredonyer Pass.
1706
Comment
CAS-BOT-BC116044
Delphinium nuttallianum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49180
Lassen
Sierra Nevada, Elysian Valley northwest of Janesville.
1325
Comment
UC773881
Delphinium nuttallianum
L. R. Short
1936-5-12
S- 347
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1834
Comment
CAS-BOT-BC116046
Delphinium nuttallianum
F. W. Pierson
1926-6-22
6820
Lassen
Trail to Devil's Kitchen, Drakesbad, Lassen National Park.
Comment
HSC27054
Delphinium nuttallianum
John Pratt
1970-6-11
5
Lassen
Fredonyer Pass
1738
Comment
UC1131416
Deschampsia cespitosa
H. S. Yates
1936-8-12
6087
Lassen
Westwood Susanville Quad., Westwood
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
POM203128
Deschampsia cespitosa subsp. cespitosa
J. T. Howell
1934-7-9
12517
Lassen
Bridges Creek Spring.
Comment
UC1137794
Deschampsia cespitosa subsp. cespitosa
George A. Fischer and Irwin H. Johnson
1933-7-15
F 244
Lassen
Patterson Flat Lassen Forest, Patterson Flat
1737
Comment
CAS-BOT-BC192744
Deschampsia danthonioides
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-10
16328
Lassen
Along southern shore of Eagle Lake
Comment
CHSC112783
Deschampsia danthonioides
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18754
Lassen
Drainage filled with dirt from the 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
POM313171
Deschampsia danthonioides
Malcolm A. Nobs, S. Galen Smith
1949-7-21
1059
Lassen
4 miles north of Madeline
Comment
CAS-BOT-BC192746
Deschampsia danthonioides
Clarence R. Quick
1962-6-17
62 25 A
Lassen
Swains Hole, a manmade pond in sagebrush flat south of Blacks Experimental Station
1554
Comment
CAS-BOT-BC201807
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
1859
Comment
CAS-BOT-BC201809
Deschampsia elongata
Malcom A. Nobs; S. Galen Smith
1949-7-21
1058
Lassen
4 miles north of Madeline
Comment
HSC23170
Deschampsia elongata
D. E. Anderson
1969-7-5
4993
Lassen
Freedonyer Pass, 15 mi. W of Susanville
1752
Comment
UC1131561
Deschampsia elongata
A. Simontacchi
1940-7-3
919
Lassen
3.5 mi. w.-s.w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad.
Comment
CAS-BOT-BC42987
Descurainia incisa subsp. incisa
A. M. Vollmer; L. Beane
1953-7-1
13
Lassen
Along Halls Flat road, beginning 6 miles west of Susanville to McArthur.
1554
Comment
CHSC4811
Descurainia pinnata
R. Carter
1967-7-7
578
Lassen
Collected at Eagle Lake Biology Station, e central shore of Eagle Lake.
1524
Comment
UC1126907
Descurainia pinnata
A. Simontacchi
1940-6-4
808
Lassen
14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad.
1783
Comment
UC1136915
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-BC43163
Descurainia pinnata subsp. brachycarpa
John Thomas Howell
1934-6-10
11902
Lassen
3 miles south of Ravendale.
Comment
UC1143009
Descurainia richardsonii
August L. Hormay
1934-5-11
Lassen
2.5 mi nw Hall's Flat; Lassen National Forest
1676
Comment
CHSC64773
Descurainia sophia
Vernon H. Oswald
1995-6-7
6840
Lassen
Modoc Plateau. Ridge on the n side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi e of Wendel, ne of Susanville. Near the road.
1231
Comment
NY694154
Descurainia sophia
G. Schoolcraft
1993-5-25
2268
Lassen
North and South of Smoke Creek Road
1463
Comment
RSA0035397
Descurainia sophia
Lowell Ahart, John Dittes
2008-6-20
14912
Lassen
On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1263
Comment
CAS-BOT-BC500983
Dichelostemma multiflorum
T. S. Brandegee
1892-7-30
s. n.
Lassen
Susanville
Comment
CAS-BOT-BC292260
Dieteria canescens
Margaret Williams; Steven Williams
1974-7-26
74 -L-21
Lassen
Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70
1493
Comment
CAS-BOT-BC299811
Dieteria canescens var. canescens
Mrs. H. C. Cantelow
1940-10-5
s.n.
Lassen
About 1 1/2 mi. N.W. of Johnstonville, east of Sierra Nevada Mts.
Comment
UC1523714
Dieteria canescens var. canescens
Gary Schoolcraft
1981-7-21
542
Lassen
1524
Comment
HSC42427
Dieteria canescens var. shastensis
Barbara Kelly
1977-8-9
562
Lassen
16 1/4 miles E of Madeline
Comment
UC1536890
Dieteria canescens var. shastensis
G. H. True Jr.
1936-6-25
532
Lassen
flats e of Harvey Ranger Station; Harvey Valley
1706
Comment
UC506907
Dieteria canescens var. shastensis
George A. Fischer and Irwin H. Johnson
1933-7-14
F- 268
Lassen
Lassen Forest
1752
Comment
CAS-BOT-BC153632
Diplacus jepsonii
Lassen 1927 G. S. Crew
1927-6-25
23
Lassen
Norval Flat, Lassen National Forest
1747
Comment
CHSC68877
Diplacus mephiticus
Vernon Oswald; Lowell Ahart
1997-6-24
8597
Lassen
South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd.
1685
Comment
CAS-BOT-BC154007
Diplacus torreyi
A. M. Vollmer; L. Beane
1953-7-1
48
Lassen
Along Halls Flat road, beginning 6 miles west of Susanville to McArthur
1554
Comment
CDA31694
Distichlis spicata
T. C. Fuller
1959-7-7
4733
Lassen
Hwy 395 just east of Standish.
0
Comment
UCD64387
Distichlis spicata
A. A. Beetle
1941-6-28
2807
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak.
Comment
UCD64451
Distichlis spicata
H. S. Yates
1936-8-11
6056
Lassen
Near Red Rock.
1341
Comment
SACT001015
Distichlis spicata var. stricta
Malcolm Nobs, S. Smith
1949-7-22
Lassen
Both staminate and pistillate, forming a dense turf around high water mark, alkaline.
Comment
CHSC36450
Dodecatheon alpinum
Susan H. Euing
1982-6-4
4
Lassen
Murrers Upper Meadow.
Comment
CHSC7735
Dodecatheon alpinum
Beverley J. Wise
1969-4-20
82
Lassen
14.7 mi. north of Susanville on Hwy 139.
1463
Comment
SD61013
Dodecatheon alpinum subsp. majus
Darley F. Howe
1964-7-31
3899
Lassen
Meadow above Blue Lake, Warner Mts., Modoc National Forest
1890
Comment
UC1137728
Dodecatheon conjugens
L. R. Short
1936-4-28
S- 331
Lassen
Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range
1767
Comment
CHSC6234
Dodecatheon jeffreyi
M. West
1946-6-20
Lassen
Meadow above Grasshopper Valley.
1828
Comment
CHSC113007
Downingia bacigalupii
Lowell Ahart; John Dittes
2013-7-22
18875
Lassen
Around a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC4763
Downingia bacigalupii
R. Carter
1967-7-16
622
Lassen
Growing in drying vernal pool along side rd.
Comment
CHSC79144
Downingia bacigalupii
Beecher Crampton
1970-6-26
8637 a
Lassen
Ca. 5 miles west of Susanville.
Comment
CHSC95386
Downingia bacigalupii
H. Chappel; J. Goldhammer, K. Moran, K. Strassman
2002-7-9
ALT- 018
Lassen
Ecoregion 4. Muck Valley (at top of mountain pass).
1386
Comment
JEPS120905
Downingia bacigalupii
Lowell Ahart, John Dittes, Todd Sloat
2013-6-8
18738
Lassen
About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
UC1609311
Downingia bacigalupii
Vernon H. Oswald and Lowell Ahart
1993-7-8
5677
Lassen
ca 11 air mi nnw Poison Lake (n side of Rd 34N12, just e of the railroad at Halls Flat Well)
1737
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
UCD127933
Downingia bacigalupii
Louis K. Mann; M. Pat Mann
1963-6-18
s.n.
Lassen
On State Highway 139 from Susanville to Adin, 42 miles north of Susanville.
Comment
JEPS114876
Downingia bicornuta var. bicornuta
Lowell Ahart, John Dittes
2008-6-20
14945
Lassen
In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
RSA0035911
Downingia bicornuta var. bicornuta
Lowell A. Ahart, John Dittes
2008-6-20
14945
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
UC1143175
Downingia bicornuta var. bicornuta
Robert W. Gardner
1937-6-26
G- 24
Lassen
Poison Lake Halls Flat Quad.
1706
Comment
UC803945
Downingia bicornuta var. bicornuta
G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan
1949-8-6
4005
Lassen
between Susanville and McArthur (edge of Feather Lake); Feather Lake
1676
Comment
UC890609
Downingia bicornuta var. bicornuta
Elmer I. Applegate
1929-6-24
5883
Lassen
just n Bieber (nw corner of Lassen County)
Comment
SEINET12329657
Downingia elegans
N. H. Holmgren, Holmgren, P. K.
1978-1
8902
Lassen
Madeline Plains, Coyote flat, 14.5 km (9 mi.) east-northeast of Termo and 13 km (8 mi.) airline
1630
Comment
RSA298985
Downingia insignis
Helen-Mar Wheeler
1952-7-11
s.n.
Lassen
South of Madeline.
Comment
CHSC65304
Downingia laeta
Vernon H. Oswald; Lowell Ahart
1995-8-14
7199
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville.
1737
Comment
CHSC99496
Downingia laeta
Lowell Ahart; John Dittes
2008-6-20
14928
Lassen
Bottom of 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
JEPS24763
Downingia laeta
John H. Weiler, L. Constance, E. Molseed
1960-6-13
60164
Lassen
1.7 mi. s. Ravendale (w. side of U.S. 395)
1615
Comment
SEINET10539558
Draba
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17801
Lassen
6 mi. N of hallelujah jct. On u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash.
1402
Comment
SEINET10481008
Draba aurea
John G. Lemmon
Lemmon s.n.
Lassen
Lassen's peak in volcanic ashes, CA.
Comment
CHSC508
Draba verna
J. Wakeman
1963-5-11
Lassen
6 mi. east of Bieber on hiway 299.
Comment
CHSC108018
Draba verna var. aestivalis
Lowell Ahart; John Dittes
2011-6-20
17489
Lassen
About 3 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
CHSC91326
Draba verna var. aestivalis
Lowell Ahart; John Dittes
2005-6-1
11901
Lassen
On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
Comment
CAS-BOT-BC159342
Drymocallis lactea var. lactea
Louella Bass
1973-6-14
106
Lassen
Elysian Valley - Sierra Nevada
1325
Comment
CHSC27594
Dysphania botrys
George Deniso
1978-7-22
85
Lassen
E shore of Eagle L., in basalt rock and cattle manure, several ft S of Little Traxel Pt.
1584
Comment
CHSC112749
Elatine californica
Lowell Ahart; John Dittes
2013-7-22
18881
Lassen
Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
CHSC60896
Elatine californica
Vernon H. Oswald; Lowell Ahart
1993-7-8
5646
Lassen
Pittville Rd (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake.
1709
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
UCD58788
Elatine chilensis
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
RSA0011453
Eleocharis
Robert F. Thorne, Larry E. DeBuhr
1975-8-22
46985
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line
1616
Comment
JEPS28330
Eleocharis acicularis
George W. Gillett
1957-7-29
952
Lassen
Snag Lake, shoreline near the E inlet Lassen Volcanic National Park
1850
Comment
CHSC117180
Eleocharis bella
Lowell Ahart; John Dittes
2016-6-7
21015
Lassen
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.
1397
Comment
POM11415
Eleocharis montevidensis var. montevidensis
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville.
1524
Comment
CAS-BOT-BC113202
Eleocharis parishii
R. F. Thorne; C. W. Tilforth
1969-9-6
39258
Lassen
Sandy flats along Long Valley Creek, ca. 14 mi SE of Milford.
1310
Comment
UC1776676
Eleocharis quinqueflora
G. Schoolcraft
1995-5-23
2488
Lassen
Three Springs
1554
Comment
CHSC115611
Elymus cinereus
Lowell Ahart; John Dittes
2015-7-14
20327
Lassen
On the north side of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
1271
Comment
JEPS121785
Elymus cinereus
B. Castro and L. P. Janeway
2012-7-2
1937
Lassen
Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at Skedaddle Ranch.
Comment
CAS-BOT-BC227488
Elymus elymoides
John Thomas Howell
1934-7-10
12533
Lassen
Between Harvey Valley and Patterson Flats
Comment
UCD61621
Elymus elymoides
R. Tofsrud
1947-7-1
217
Lassen
East of Madeline.
Comment
UC1136931
Elymus elymoides subsp. elymoides
L. R. Short and J. Warren
1936-6-29
S- 461
Lassen
Burgess Spr. Exp. Range Lassen <National> Forest
1820
Comment
JEPS126503
Elymus elymoides var. californicus
Jocelyn Munoz
2016-8-17
CA 350 -80
Lassen
Heading north on 139, turn right onto Horse Lake Road. Continue east on Horse Lake Road passed lake. Take a left on an unnamed road about 3.5 miles east of lake. Then turn right on the first unnamed road with a NW aspect.
Comment
JEPS128170
Elymus elymoides var. californicus
M. C. Mahoney, J. A. Nash
2017-7-20
CA 350 -84
Lassen
On Snowstorm Mt. From Susanville take Highway 395 N. Turn left onto an unnamed road that heads west onto Snowstorm Mt. Follow thus rough road for ~5 miles before taking a right onto a road going SE towards Snowstorm Mt. summit. About 1 mile up, the population is on either side of this road.
Comment
CHSC29902
Elymus glaucus
Robin L. Ondricek
1978-7-22
107
Lassen
1.2 mi e of paved road to the marina on Black Mt. road.
1584
Comment
CAS-BOT-BC234093
Elymus multisetus
John Thomas Howell
1976-7-20
52001
Lassen
About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek
1432
Comment
JEPS127708
Elymus spicatus
Alejandro Brambila, Michael Dolan
2016-7-13
CA 320 -161
Lassen
Juniper Ridge Road, before split with Juniper Tree Road. Population North of road.
Comment
UCR17291
Elymus spicatus
Frank C. Vasek
1975-7-11
750711- 02
Lassen
Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd.
1650
Comment
JEPS119960
Elymus trachycaulus
Lowell Ahart, John Dittes
2012-7-9
18297
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
UCR119182
Elymus trachycaulus
Beecher Crampton
1954-7-5
2058
Lassen
Modoc Plateau, 4.5 miles west of Susanville along state highway 36.
1433
Comment
CAS-BOT-BC204359
Elymus trachycaulus subsp. trachycaulus
G. Schoolcraft
1994-8-2
2396
Lassen
About 2 miles NW of Boot Lake
2438
Comment
HSC69080
Elymus trachycaulus subsp. trachycaulus
Gary Schoolcraft
1980-7-28
333
Lassen
Meadow E of Tule Mountain.
2043
Comment
SEINET12757019
Elymus triticoides
B. L. Wilson, D. Lytjen, N. Otting
2005-7-29
11527
Lassen
Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat.
1692
Comment
POM119924
Ephedra californica
Marcus E. Jones
1897-6-23
s.n.
Lassen
Amedee
1220
Comment
CAS-BOT-BC81880
Ephedra viridis
P. Monnet
1913-7-1
839
Lassen
Hot Springs Peak
2133
Comment
HSC1308
Ephedra viridis
K. P. St. John
1965-5-6
17
Lassen
13 mi. N of Litchfield on Hwy. 395
Comment
NY70786
Ephedra viridis
A. J. Cronquist
1959-6-17
8477
Lassen
6 miles northeast of Susanville
1828.8
Comment
UC281
Ephedra viridis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3342
Lassen
Honey Lake Valley Honey Lake Valley (on slopes of lava hills)
Comment
CHSC14185
Epilobium brachycarpum
M. S. Taylor
1974-7-10
279
Lassen
Ca. 50 ft w of road to Gallatin Beach, ca. 5 mi s of Gallatin Beach on Eagle Lake, ca. 10 mi nw of Susanville.
1524
Comment
JEPS121253
Epilobium brachycarpum
Lowell Ahart
2013-7-22
18845
Lassen
W margin of duck field, about 10 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
SEINET12539665
Epilobium brachycarpum
C. G. Gulling
1905-1
s.n.
Lassen
Big Meadows.
Comment
JEPS121248
Epilobium campestre
Lowell Ahart, John Dittes
2013-7-22
18850
Lassen
About 30 yards S of the man-made pond, about 120 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley.
Comment
UC764398
Epilobium campestre
R. F. Hoover
1940-9-21
4602
Lassen
4 mi w Susanville
Comment
CHSC6189
Epilobium ciliatum subsp. ciliatum
J. B. Kimsey
1946-6-26
Lassen
Pine Creek, Eagle Lake.
1584
Comment
HSC95176
Epilobium ciliatum subsp. ciliatum
Gordon Leppig, Kai Neander, Juli Neander
1997-7-26
690
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
NY1001467
Epilobium ciliatum var. ciliatum
M. A. Nobs
1949-8-20
1471
Lassen
Honey Lake Valley, 1 mile south of Milford
Comment
CHSC66251
Epilobium hallianum
Vernon H. Oswald; Lowell Ahart
1996-6-24
7849
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
CHSC27074
Epilobium oregonense
Robert A. Schlising
1978-8-1
3333
Lassen
SE of Eagle Lake in Murrers Upper Meadow.
1645
Comment
HSC95331
Epilobium oregonense
Gordon Leppig, J. Cromwell
1997-7-27
605
Lassen
Modoc National Forest, Blue Lake Ranch.
1970
Comment
UC1609447
Epilobium oregonense
Vernon H. Oswald and Lowell Ahart
1993-8-3
5741
Lassen
just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp
1932
Comment
SEINET3271522
Epilobium oregonense
Marcus E. Jones
1897-6-30
Lassen
4 mi. below Eagle Lake
1524
Comment
JEPS87409
Epilobium pallidum
Vernon H. Oswald and Lowell Ahart
1993-7-8
5673
Lassen
Halls Flat Rd (33N18) 1.4 mi ssw Pittville Rd (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, bed of vernal pool on e side of rd)
1694
Comment
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
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
NY1000570
Epilobium torreyi
N. H. Holmgren
1980-7-3
9492
Lassen
Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale
1700
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
RSA719899
Equisetum laevigatum
Michael A. Vincent, K. Levings
2006-7-29
12905
Lassen
Along Rt. 36, 14.3 miles west of Susanville.
Comment
SEINET10530241
Equisetum laevigatum
Mary Susan Taylor
1982-5-29
Taylor 4566
Lassen
4900 ft. T22N R17E sw/sw sec 23. Loyalton quad. In sandy rd embankment at jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno.
1493
Comment
CHSC91598
Eragrostis cilianensis
G. Douglas Barbe
1978-8-31
2425
Lassen
Modoc National Forest. Roadside, 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.).
1417
Comment
CAS-BOT-BC213625
Eragrostis mexicana subsp. virescens
John Thomas Howell; G. H. True
1973-7-31
50145
Lassen
Susanville
1295
Comment
CHSC4879
Eremogone congesta
R. Carter
1967-6-23
544
Lassen
Growing ca. 5 yds. off N side road.
Comment
CHSC118851
Eremogone congesta var. subcongesta
L. P. Janeway; B. Castro
2015-6-5
11763
Lassen
Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley toTuledad Canyon, 7.4 road-km south ofSurprise Valley Road; 1.4 air-km northwest of Mahogany Mtn.
1731
Comment
CHSC72310
Eremogone congesta var. subcongesta
L. P. Janeway; Glenn Clifton
1998-7-9
5730
Lassen
Ridgetop saddle, 1.0 mi east of Diamond Mtn.
2215
Comment
SEINET12875577
Eremogone congesta var. suffrutescens
George W. Gillett
1957-1
945
Lassen
Along trail between Butte Lake and Snag Lake.
1859
Comment
UCD150407
Eremothera boothii subsp. alyssoides
William Anderson
1963-6-2
s.n.
Lassen
Wendel.
Comment
JEPS14047
Eriastrum signatum
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5417
Lassen
along Smoke Creek rd 6.8 mi e Highway 395 (s edge of valley); Secret Valley
Comment
UC572262
Eriastrum signatum
E. Sawyer
1935-6-29
222
Lassen
LOng Valley Sierraville Quadrangle
1310
Comment
CAS-BOT-BC515175
Eriastrum signatum
Rimo Bacigalupi; G. T. Robbins
1955-7-21
5417
Lassen
Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395
Comment
JEPS103167
Eriastrum signatum
Beth Corbin
2002-10-2
1115
Lassen
Grasshopper Valley, S of Termo-Grasshopper Road.
1633
Comment
RSA0124149
Eriastrum signatum
Christopher Davidson
1975-6-7
2763
Lassen
1 mile E of Beckwourth Pass on Hwy 70.
1524
Comment
RSA0125158
Eriastrum signatum
Marcus E. Jones
1897-6-22
9972
Lassen
10 miles south of Amedee. [Lassen or Plumas Co.]
1220
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
JEPS124583
Eriastrum sparsiflorum
J. Yamanaka
1965-7-12
123
Lassen
Highway 395, 2.6 miles No. of Milford Habitat.
Comment
JEPS124585
Eriastrum sparsiflorum
Dixie Funnell
1965-7-12
127
Lassen
2.6 miles north of MIlford.
Comment
SJSU8732
Eriastrum wilcoxii
M. D. Fleschner
1965-7-12
Lassen
by Hwy 395, 1 mi N of Milburn
1158
Comment
UCD149881
Eriastrum wilcoxii
William Anderson
1963-6-26
s.n.
Lassen
Honey Lake.
Comment
CAS-BOT-BC286605
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
HSC69070
Ericameria bloomeri
Gary Schoolcraft
1979-8-15
176
Lassen
Tule Mtn. Area
2043
Comment
SEINET5741365
Ericameria bloomeri
Lowell E. Urbatsch, Vensa Karaman
2000-1
7714
Lassen
Collected along Forest Road 37N11, off of CA 139.
1220
Comment
UC1136849
Ericameria bloomeri
L. R. Short and J. Warren
1936-8-17
S- 497
Lassen
Burgess Spr. Exp. Range Lassen Forest
1767
Comment
CAS-BOT-BC298174
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-BC298176
Ericameria nauseosa var. oreophila
C. B. Wolf
1931-9-4
2397
Lassen
Big Valley, 2.6 miles from Bieber on road to Alturas
1267
Comment
SJSU3012
Ericameria nauseosa var. oreophila
J. W. Tilden
1967-8-23
1771
Lassen
Litchfield, southeastern Lassen County
Comment
HSC68556
Ericameria nauseosa var. speciosa
Gary Schoolcraft
1980-8-10
359
Lassen
Along Post Camp Rd. N of Shinn Peaks
1890
Comment
JEPS21518
Ericameria nauseosa var. speciosa
R. F. Hoover
1940-9-29
4646
Lassen
pass between Shaffer Mt. and Warren Peak
Comment
UC221388
Ericameria nauseosa var. speciosa
H. M. Hall
1921-9-11
11680
Lassen
21 mi from Susanville (along roadside, s side of Honey Lake Valley); Honey Lake Valley
Comment
CAS-BOT-BC293009
Ericameria parryi var. nevadensis
C. B. Wolf
1931-9-6
2405
Lassen
1/2 mile from Janesville on the road to Wendel - Western edge of Honey Lake Valley
1280
Comment
UC87724
Erigeron aphanactis var. aphanactis
unknown
1892-6-22
Lassen
Honey Lake
Comment
CAS-BOT-BC293527
Erigeron aphanactis var. aphanactis
P. Monnet
1913-7-6
809
Lassen
Hot Springs Peak, S.E. of Lassen County
1828
Comment
JEPS80681
Erigeron bloomeri
L. R. Heckard and T. I. Chuang
1981-6-10
5532
Lassen
North Eagle Lake Campground Eagle Lake (nw corner of lake)
1524
Comment
RSA713118
Erigeron bloomeri
L. P. Janeway, B. Castro
2005-7-10
8486
Lassen
Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge.
1993
Comment
SEINET8513002
Erigeron bloomeri
A. Rosenblum, A. Ortega, O. Schilling, M. Gray
2015-5-28
s.n.
Lassen
Costantia Allotment. West of Peterson's
1490
Comment
CAS-BOT-BC294485
Erigeron bloomeri var. bloomeri
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50676
Lassen
Summit ridge of Diamond Mt.
2346
Comment
CAS-BOT-BC294488
Erigeron bloomeri var. bloomeri
John Thomas Howell
1934-7-8
12513
Lassen
Harvey Valley
Comment
CHSC48146
Erigeron bloomeri var. bloomeri
Vernon Oswald
1986-6-15
2115
Lassen
Road between Hwy 139 and Eagle Lake Biological Station, near Black Mtn.
1584
Comment
UC1368785
Erigeron bloomeri var. bloomeri
John L. Strother
1970-5-23
952
Lassen
about 6 mi n Honey Lake
1280
Comment
UCR268961
Erigeron bloomeri var. bloomeri
Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre
2013-7-12
31427
Lassen
along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville
1733
Comment
CAS-BOT-BC296848
Erigeron divergens
John Thomas Howell; Alice Eastwood
1940-6-11
7979
Lassen
Big Valley Mts.
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
JEPS127271
Erigeron divergens
Lowell Ahart, John Dittes
2016-7-13
21106
Lassen
200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
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
UC1924196
Erigeron divergens
Debra Valov
2005-8-20
2005234
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1274
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
CHSC77194
Erigeron eatonii var. plantagineus
G. Schoolcraft
1993-6-29
Lassen
Ash Valley RNA 16 mi. E. of Adin.
1554
Comment
CHSC89752
Erigeron eatonii var. plantagineus
L. P. Janeway
2004-6-26
8156
Lassen
High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest.
1750
Comment
SBBG8127
Erigeron eatonii var. plantagineus
H. and M. Dearing
1938-6-30
2233
Lassen
N of Susanville [Hwy 44]
Comment
UC1587058
Erigeron eatonii var. plantagineus
G. Schoolcraft
1991-6-18
2162
Lassen
along Hwy 139 4 mi w Said Valley Res.
1706
Comment
UC1776680
Erigeron eatonii var. plantagineus
G. Schoolcraft
1993-6-29
2313
Lassen
Ash Valley RNA 16 miles E of Adin
1554
Comment
UC87584
Erigeron eatonii var. plantagineus
T. S. Brandegee
1892-7-2
Lassen
Susanville
Comment
UC87591
Erigeron eatonii var. plantagineus
T. S. Brandegee
1892-7-2
Lassen
Susanville
Comment
CAS-BOT-BC300425
Erigeron elegantulus
Roxana S. Ferris; Rena Duthie
1919-6-12
20
Lassen
Madeline
Comment
CHSC101040
Erigeron elegantulus
John Dittes
2008-5-22
1523
Lassen
Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 300 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, rocky volcanic toe-slope on northeast side of Willow Creek.
482
Comment
UC31465
Erigeron elegantulus
Mrs. C. C. Bruce
1892-6-1
2182
Lassen
Madaline Plains
Comment
RSA93190
Erigeron elegantulus
F. W. Peirson
1926-6-24
6855
Lassen
On Madeline Plain
Comment
POM36253
Erigeron filifolius
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat.
1524
Comment
CAS-BOT-BC295182
Erigeron inornatus
John Thomas Howell
1974-7-10
50561
Lassen
Elysian Valley
1325
Comment
CHSC88611
Erigeron inornatus var. calidipetris
Linnea Hanson
1998-8-11
378
Lassen
Lassen National Forest. Off Hwy. A21 north of Westwood.
1524
Comment
CHSC92960
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
POM41676
Erigeron inornatus var. inornatus
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CAS-BOT-BC295505
Erigeron linearis
John Thomas Howell
1934-6-14
12137
Lassen
Near Lost Lake, Warner Mts.
2438
Comment
JEPS41565
Erigeron linearis
F. W. Peirson
1926-6-24
6855
Lassen
Madeline Plain
Comment
UC585085
Erigeron linearis
E. B. Babcock, G. L. Stebbins Jr.
1936-6-8
1792
Lassen
about 5 mi N of Terno
1371
Comment
CHSC13846
Erigeron peregrinus var. callianthemus
A. W. Harilik
1967-7-11
58
Lassen
Collected on road 5.19 ca. 5 mi from Eagle Lake Biology Station.
1524
Comment
CAS-BOT-BC295959
Erigeron philadelphicus
Marcus E. Jones
1897-6-30
s.n.
Lassen
Susanville, 4 miles below Eagle Lake
1524
Comment
CHSC5209
Erigeron philadelphicus
M. West
1946-7-10
Lassen
Pine Creek, Eagle Lake.
1584
Comment
CDA34230
Erigeron pumilus subsp. intermedius
L. Ahart, J. Dittes
2010-7-31
16986
Lassen
About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
Comment
CHSC105241
Erigeron pumilus subsp. intermedius
Lowell Ahart; John Dittes
2010-7-31
16986
Lassen
About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
HSC100803
Erigeron pumilus var. intermedius
Lowell Ahart, John Dittes
2010-7-31
16986
Lassen
3,330 ft. N of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin.
1521
Comment
UC31450
Erigeron pumilus var. intermedius
M. S. Baker and Frank Nutting
1894-7-6
Lassen
Adobe Meadow Dixey Valley, Adobe meadow
Comment
UC76016
Erigeron pumilus var. intermedius
Milo S. Baker
1894-7-1
Lassen
Dixey Valley
Comment
NY243318
Eriogonum baileyi
G. Schoolcraft
1985-7-29
1490
Lassen
Western slopes of Ft. Sage Mtns.
1402.1
Comment
UC762677
Eriogonum baileyi
R. F. Hoover
1940-10-1
4649
Lassen
Johnstonville
Comment
SEINET5333913
Eriogonum baileyi
D. Tonenna
2007-8-20
s.n.
Lassen
Hwy 395, 6 mi. north of Halellujah Junction, west of road
1450
Comment
UCR67382
Eriogonum baileyi var. baileyi
George K. Helmkamp
1990-10-4
M 9 A
Lassen
Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass
1463
Comment
CAS-BOT-BC244039
Eriogonum baileyi var. praebens
R. F. Hoover
1940-10-5
4673
Lassen
Between Shaffer Mt. and Warren Peak
Comment
CHSC25312
Eriogonum caespitosum
Pauleen Broyles
1977-6-1
159
Lassen
Lava flow ca 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Ranch Road, ca 10 km ne of Herlong.
1660
Comment
JEPS19795
Eriogonum collinum
Rimo Bacigalupi with S. Galen Smith
1957-6-28
6009
Lassen
ne along US Highway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek
1615
Comment
NY242504
Eriogonum collinum
A. J. Cronquist
1959-6-17
8478
Lassen
1 mile south of Ravendale, 40 miles northeast of Susanville.
1615.4
Comment
POM105835
Eriogonum collinum
R. M. Austin
1883-09
s.n.
Lassen
Madaline Plains
Comment
RSA338584
Eriogonum collinum
Noel Holmgren, Patricia K. Holmgren
1980-7-3
9485
Lassen
Hwy 395, 7.4 km (4.6 mi) south of Ravendale.
1620
Comment
CHSC64805
Eriogonum maculatum
Vernon H. Oswald
1995-6-7
6833
Lassen
Wendel Rd. (Lassen 320) at milepost 9.5, 4.1 mi e of Wendel, ne of Susanville.
1231
Comment
CHSC65157
Eriogonum maculatum
Vernon H. Oswald; Lowell Ahart
1995-7-5
6961
Lassen
North of Honey Lake on Smoke Creek Ranch Rd., 1.2 mi w of the Nevada-California state line.
1335
Comment
UC1305802
Eriogonum maculatum
Noel H. Holmgren, James L. Reveal
1964-8-22
1724
Lassen
18 mi s along U.S. 395 Ravendale (35 mi ne of Susanville)
Comment
POM203841
Eriogonum marifolium
J. T. Howell
1934-7-9
12521
Lassen
Pine Creek Flat
Comment
NY282208
Eriogonum microthecum var. schoolcraftii
G. Schoolcraft
1982-9-8
912
Lassen
In Robinson Canyon west of Doyle Ca.
1585.0
Comment
NY572524
Eriogonum microthecum var. schoolcraftii
G. Schoolcraft
1982-7-20
807
Lassen
Lower slopes of Wagner Canyon
1402.1
Comment
UC762680
Eriogonum nidularium
R. F. Hoover
1940-9-29
4643
Lassen
pass between Mt. Shaffer and Warren Peak
Comment
POM105409
Eriogonum nudum var. deductum
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat. [also Chats, a former settlement]
1524
Comment
CAS-BOT-BC261445
Eriogonum nudum var. nudum
Clare B. Hardham
1969-8-28
17442
Lassen
West of Janesville
Comment
CHSC105258
Eriogonum nudum var. nudum
Lowell Ahart; John Dittes
2010-7-31
16983
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
SD13333
Eriogonum nudum var. nudum
R. V. Chamberlain
1935-9-8
6584
Lassen
Guernsey Creek
Comment
JEPS126468
Eriogonum nudum var. pubiflorum
Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky
2015-8-27
CA 350 -071
Lassen
Along Rice Canyon Road and into Rice Canyon.
Comment
UCR259107
Eriogonum nummulare
John F. Emmel
1993-7-29
1284
Lassen
Southeast Honey Lake Valley, 4.1 air miles west and 1.3 air miles south of Calneva railroad stop, c. 2 air miles north of peak of Turtle Mountain
1256
Comment
SEINET5333908
Eriogonum ochrocephalum
D. Tonenna
2007-8-20
s.n.
Lassen
Hwy 395, 6 mi north of Halellujah Junction along west side of road.
1450
Comment
UC54767
Eriogonum ovalifolium var. ovalifolium
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Amadee Honey Lake Valley, Amadee
Comment
RSA0030656
Eriogonum ovalifolium var. purpureum
Anthony Baniaga
2011-7-9
439
Lassen
Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.
1716
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
CAS-BOT-BC272623
Eriogonum spergulinum var. reddingianum
M. S. Baker; Frank Nutting
1894-1-1
s.n.
Lassen
Unspecified
Comment
RSA716265
Eriogonum sphaerocephalum
L. Ahart, John Dittes
2005-6-2
11984
Lassen
North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Road and Highway 70; 5.8 mi. (air) northwest of Hallelujah Junction.
1431
Comment Read comments Jun 1 2009
JEPS94611
Eriogonum sphaerocephalum var. halimioides
Vernon H. Oswald and Lowell Ahart
1997-5-27
8491
Lassen
e side of Hwy 139 at small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.)
1627
Comment
CHSC64885
Eriogonum sphaerocephalum var. sphaerocephalum
Vernon H. Oswald; Lowell Ahart
1995-6-19
6875
Lassen
Between Litchfield and Revendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395.
1383
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
CHSC25913
Eriogonum strictum var. anserinum
K. R. Stern
1967-6-24
2438
Lassen
Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station.
1554
Comment
UC1249283
Eriogonum strictum var. anserinum
Arthur Cronquist and Arthur H. Holmgren
1959-6-17
8473
Lassen
50 mi se Susanville
1371
Comment
JEPS85787
Eriogonum strictum var. proliferum
Roy E. Buck, Robert A. Price
1988-6-26
1028
Lassen
on subsidiary peak ca. 0.5 air km n main summit (Fredonyer Peak; ca. 30 air km nne of Susanville); Fredonyer Peak
2377
Comment
CAS-BOT-BC267889
Eriogonum umbellatum
Hans Leschke
1964-9-3
1892
Lassen
Cinder Cone, Lassen Volcanic National Park
Comment
JEPS127724
Eriogonum umbellatum
Alejandro Brambila, Michael Dolan
2016-8-2
CA 320 -181
Lassen
Head north on unnamed road west of Holbrook Reservoir from Ash Valley Road.
Comment
UCR248974
Eriogonum umbellatum
Elizabeth A. Kempton, Tim Tibault
2006-7-29
418
Lassen
town of Chester, vacant lot at intersection of Willow Way and Main Street
1388
Comment
CAS-BOT-BC267887
Eriogonum umbellatum
Clarence R. Quick
1962-8-3
62 -89
Lassen
Delasmutt Ranch, Hw. 44, nr. Susanville-Old Station, along dirt road to Blacks Mt. E.F. Hdqtrs.
1615
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
CHSC4436
Eriogonum umbellatum var. modocense
K. R. Stern
1967-7-1
2461
Lassen
Ca. 16 mi. NE of Susanville. State Hwy 139.
Comment
UC161881
Eriogonum umbellatum var. modocense
T. S. Brandegee
1892-7-1
Lassen
Susanville
Comment
UC773862
Eriogonum umbellatum var. nevadense
L. R. Short and J. Warren
1936-6-12
S- 432
Lassen
Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range
1804
Comment
POM253241
Eriogonum umbellatum var. polyanthum
A. A. Heller
1938-6-23
15190
Lassen
3 mi. east of Westwood.
Comment
RSA766453
Eriogonum ursinum
C. Epling, Wm. Robinson
1935-7-17
s.n.
Lassen
Chaos Crags, Lassen Park
Comment
CAS-BOT-BC262365
Eriogonum vimineum
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat
1524
Comment
CHSC4953
Eriogonum vimineum
R. Carter
1967-6-27
561
Lassen
Growing ca. 10 yds off n side of rd., 1.75 mi w of Eagle Lake Biology Station.
1584
Comment
CHSC56867
Eriogonum vimineum
Mary Meyer
1980-7-3
Lassen
North of Jeep trail going up drainage above camping pullover.
1584
Comment
CHSC61233
Eriogonum vimineum
P. V. Caldwell
1972-6-17
227
Lassen
Eagle Lake B. Station. Outside and around Tom Rodgers Hall.
Comment
HSC63561
Eriogonum vimineum
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6006
Lassen
Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley
1555
Comment
JEPS127353
Eriogonum vimineum
Lowell Ahart, John Dittes
2016-7-13
21132
Lassen
180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
NY399609
Eriogonum vimineum
J. L. Reveal
1971-6-22
2464
Lassen
Along U.S. Highway 395, 4.5 miles south of Ravendale
Comment
SEINET14417545
Eriogonum vimineum
Robert L. Johnson, Mikel R. Stevens
2015-1
3924
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.; South to southwest-facing slope.
1545
Comment
UC1032093
Eriogonum vimineum
E. Sawyer
1935-6-27
240
Lassen
3.5 mi ne Beckwith Pass; Sierraville Quadrangle
Comment
UC1258486
Eriogonum vimineum
G. Schoolcraft
1979-6-19
78 B
Lassen
Painter's Flat
1719
Comment
UC6518
Eriogonum vimineum
M. S. Baker and F. Nutting
1894-7-2
Lassen
Dixey Mts.
Comment
CAS-BOT-BC262355
Eriogonum vimineum
David D. Keck
1930-7-23
951
Lassen
Susanville
1280
Comment
CAS-BOT-BC262358
Eriogonum vimineum
M. S. Jussel
1931-9-6
s.n.
Lassen
On the road to Mt Lassen, five miles from Westwood
1828
Comment
CAS-BOT-BC262368
Eriogonum vimineum
John Thomas Howell
1934-7-8
12493
Lassen
Spalding's, Eagle Lake
Comment
HSC69595
Eriogonum vimineum
J. Walker
1979-7-18
37
Lassen
Near Skedaddle Creek, S portion
1311
Comment
NY399577
Eriogonum vimineum
H. D. D. Ripley
1943-6-15
5763
Lassen
Northeast of Viewland
1341.1
Comment
HSC97608
Eriophorum gracile
Vernon H. Oswald, L. Ahart
1996-6-24
7888
Lassen
Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1) and 2.5 mi. S of Eagle Lake, Modoc Plateau
1634
Comment
SEINET10672052
Eriophyllum lanatum
Paul Gallian, David B. Dunn
1971-6-2
Gallian 517
Lassen
6 mi. N of Hallelujah Jct., on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash.
1402
Comment
UC1393123
Eriophyllum lanatum var. achilleoides
John L. Strother
1970-5-23
956
Lassen
about 6 mi n of Honey Lake
1280
Comment
UC1249275
Eriophyllum lanatum var. achilleoides
Arthur Cronquist and Arthur H. Holmgren
1959-6-17
8469
Lassen
50 mi se Susanville
Comment
CHSC106076
Eriophyllum lanatum var. grandiflorum
Lowell Ahart; John Dittes
2010-7-31
17024
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
UC1118288
Eriophyllum lanatum var. integrifolium
H. P. Hagge
1929-9-11
18
Lassen
Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. (Mb.1)
1828
Comment
CHSC116092
Erodium cicutarium
Lowell Ahart; John Dittes
2015-7-13
20320
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
RSA715976
Erodium cicutarium
L. Ahart, John Dittes
2005-6-2
11923
Lassen
Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction.
1460
Comment
UC1130283
Erodium cicutarium
E. Sawyer
1935-6-27
241
Lassen
3.5 mi ne Beckwith Pass; Sierraville Quad.
1524
Comment
UC1487304
Eryngium alismifolium
Yusuf Sheikh and Lincoln Constance
1973-6-27
549
Lassen
4.3 mi S of Ravendale (on State Highway 395)
Comment
UC1508837
Eryngium alismifolium
Gary Schoolcraft
1981-8-11
558
Lassen
Silva Flat Reservoir
1706
Comment
SEINET8673757
Eryngium alismifolium
G. L. Stebbins Jr., Dansereau, P.; McMillan, C.; Narayan, K.
1949-8-6
4000
Lassen
Hog Flat, n.w. of Susanville.
1676
Comment
UC585097
Erysimum capitatum var. capitatum
E. B. Babcock and G. L. Stebbins Jr.
1936-6-7
1766
Lassen
ne slope of ridge near summit east of Red Rock
1818
Comment
POM203959
Erysimum repandum
J. T. Howell
1934-6-10
11904
Lassen
3 miles S of Ravendale.
Comment
CHSC66266
Erythranthe breweri
Vernon Oswald; Lowell Ahart
1996-6-24
7850
Lassen
Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau.
1633
Comment
SBBG15427
Erythranthe breweri
H. and M. Dearing
1939-7-1
2244
Lassen
17 mi W of Susanville
Comment
CHSC43496
Erythranthe primuloides
Lowell Ahart
1974-7-9
521
Lassen
In a meadow along the south shore of Eagle Lake.
1584
Comment
CHSC4974
Erythranthe primuloides
D. L. Stites
1967-7-14
168
Lassen
3 mi e of turnoff to Silver Lake on highway 44.
1524
Comment
SEINET3836923
Erythranthe primuloides
Marcus E. Jones
1897-1
Lassen
Near Pratville, Clear Creek
1524
Comment
SEINET10528918
Erythronium purpurascens
Marcus E. Jones
1897-7-7
Jones s.n. 1897
Lassen
Lassen's Peak 6000 feet.
1830
Comment
UC1561401
Eschscholzia californica
Barbara Ertter
1987-7-24
7297
Lassen
ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved road)
1524
Comment
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
SEINET9594781
Euphorbia crenulata
D. W. Taylor
2012-7-18
21273
Lassen
Along Hwy 44, pumice flat nestled in the cones ca 2 miles S of the S end of Poison Lke.
1783
Comment
UCD39131
Euphorbia crenulata
Beecher Crampton
1964-6-25
7072
Lassen
25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest.
1722
Comment
UCD142787
Euphorbia serpillifolia
J. M. Tucker
1950-7-25
1974
Lassen
Road from Pittville, 35 miles northwest of Susanville.
Comment
UC29863
Eurybia integrifolia
Milo S. Baker
1894-7-30
Lassen
Silver Lake
Comment
SD112378
Eurybia integrifolia
Darley F. Howe
1964-8-2
3919
Lassen
East Creek, Warner Mountains, Modoc National Forest.
2010
Comment
CAS-BOT-BC458296
Euthamia occidentalis
Louella Bass
1980-8-1
s.n.
Lassen
Sierra Nevada: Standish
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
CAS-BOT-BC278437
Festuca idahoensis
John Thomas Howell
1934-7-6
12430
Lassen
Hall's Flat
Comment
CHSC27575
Festuca idahoensis
Robert Schlising
1978-7-11
3316
Lassen
S of Eagle Lake at Papoose Creek.
1584
Comment
CHSC42184
Festuca idahoensis
C. E. Laver
1985-8-12
Lassen
Ca. 8.5 mi se of Madeline and 9 mi ne of Termo.
2194
Comment
CHSC60867
Festuca idahoensis
Vernon H. Oswald; Lowell Ahart
1993-6-28
5585
Lassen
Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. In a meadow.
1731
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
UC60788
Festuca idahoensis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Long Valley Honey Lake Valley
Comment
UCD65974
Festuca idahoensis
L. Whitney
1935-6-17
3268
Lassen
Lassen National Forest, Fruit Grower's Supply Company, Camp 10.
Comment
UCR244064
Festuca microstachys
Jim Andre, G. L. Clifton
1993-6-9
19690
Lassen
Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary
1631
Comment
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
UC53777
Festuca pratensis
M. S. Baker and Frank Nutting
1894-6-30
Lassen
near Bieber; Big Valley
Comment
JEPS71219
Festuca rubra
Brown and Wieslander
1922-7-23
80
Lassen
Comment
UCD66364
Festuca rubra
A. H. Shunk
1923-1
13
Lassen
Hayden Hill.
Comment
UCD66393
Festuca rubra
A. L. Hormay
1941-6-26
27
Lassen
Lassen National Forest. Westwood Junction.
1737
Comment
CHSC60393
Fragaria virginiana
Mary Ann Showers
1992-6-12
2521
Lassen
Lassen Volcanic National Park. Meadow, Butte Lake.
1859
Comment
CHSC61058
Fragaria virginiana
Vernon H. Oswald; Lowell Ahart
1993-8-3
5756
Lassen
Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the margin of the swamp.
1932
Comment
SJSU6086
Frasera albicaulis var. nitida
J. W. Tilden
1960-6-27
1509
Lassen
outskirts of Westwood at foot of Moonlight Rd
1524
Comment
UC1523707
Fraxinus latifolia
Gregg Riegel
1981-6-17
1128
Lassen
in and along Beaver Creek Beaver Creek
1280
Comment
HSC26684
Fritillaria atropurpurea
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19220
Lassen
3 mi. N of Westwood
Comment
CAS-BOT-BC504437
Fritillaria atropurpurea
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49174
Lassen
Elysian Valley northwest of Janesville, Sierra Nevada
1325
Comment
POM109791
Fritillaria pudica
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkins Ranch.
1463
Comment
JEPS126534
Galium aparine
Lowell Ahart, John Dittes
2016-6-7
21020
Lassen
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
JEPS127170
Galium aparine
Lowell Ahart, John Dittes
2016-7-15
21223
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
RSA647556
Galium aparine
Marion P. Harthill
1972-6-16
s.n.
Lassen
Doyle.
Comment
CHSC59565
Galium bifolium
Mary Meyer
1980-7-20
518
Lassen
On west side of Fredonyer Peak.
2377
Comment
POM203777
Galium bolanderi
J. T. Howell
1934-7-3
12381
Lassen
Near Dry Lake. Mtns. SE of Bieber.
Comment
HSC95186
Galium trifidum
Gordon Leppig, Tony LaBanca
1997-6-29
540
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CHSC60407
Galium trifidum var. pacificum
Mary Ann Showers
1992-6-13
2552
Lassen
Lassen Volcanic National Park. Shoreline at western end of Widow Lake.
2072
Comment
RSA201314
Galium trifidum var. pusillum
J. T. Howell
1959-9-23
34886
Lassen
N end of Juniper Lake.
2058
Comment
CHSC36176
Gayophytum diffusum
Jerry Snodgrass
1978-6-28
1
Lassen
Lower Dry Lakes e of Eagle Lake.
1645
Comment
RSA0004469
Gayophytum helleri var. erosulatum
W. L. Jepson
1918-8-2
7754
Lassen
Beckwith Pass
1463
Comment
CHSC105245
Gayophytum heterozygum
Lowell Ahart; John Dittes
2010-7-31
17025
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
POM38695
Gayophytum heterozygum
Marcus E. Jones
1897-6-21
s.n.
Lassen
Chat.
1616
Comment
RSA768780
Gayophytum heterozygum
L. Ahart, John Dittes
2010-7-31
17025
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin.
1521
Comment
HSC63969
Gayophytum humile
Teresa Prendusi
1980-7-1
1121
Lassen
Champs Flat, 8 mi. W of N Eagle Lake.
1677
Comment
UC1122618
Gayophytum racemosum
A. Simontacchi
1940-6-6
821
Lassen
10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle
Comment
UCD150409
Gayophytum racemosum
Harry A. George
1967-6-15
s.n.
Lassen
Willow Creek Ranch.
Comment
RSA74475
Gayophytum ramosissimum
Milo S. Baker
1936-6-16
8364
Lassen
About 30 miles north of Susanville
Comment
UC725738
Gentianopsis simplex
A. A. Heller
1942-9-7
16536
Lassen
shore of Summit Lake, Lassen Volcanic Nat'l Park Lassen Volcanic Nat'l Park, Summit Lake
Comment
CHSC30615
Geranium viscosissimum var. nervosum
L. Maslin
1975-7-1
2
Lassen
Corn lily mdw. over the ridge s of Deans mdw.
1920
Comment
RSA0029585
Geranium viscosissimum var. nervosum
Bruce Bartholomew, B. Anderson
1988-6-25
4372
Lassen
Long Valley, southern end of the Warner Mountains
2080
Comment
UC1037208
Geum macrophyllum var. perincisum
Leo Whitney
1933-8-14
1568
Lassen
8 mi nw of Eagle Lake (Lassen National Forest, Slate Creek); Lassen National Forest, Slate Creek
1920
Comment
JEPS94471
Geum triflorum
Vernon H. Oswald and Lowell Ahart
1997-5-27
8504
Lassen
0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling the road); Forest Route 38N04
1546
Comment
RSA91873
Geum triflorum var. ciliatum
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
RSA0086587
Gilia
Bonnie C. Templeton
1938-4-15
s.n.
Lassen
Near Roscoe.
Comment
RSA470172
Gilia brecciarum
Christopher Davidson
1975-6-7
2757
Lassen
1 mile E of Beckwourth Pass on Hwy 70.
1524
Comment
POM72193
Gilia congesta
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
JEPS94702
Gilia inconspicua
Vernon H. Oswald and Lowell Ahart
1998-5-22
9107
Lassen
5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains
1371
Comment
JEPS94830
Gilia inconspicua
Vernon H. Oswald and Lowell Ahart
1998-5-22
9107
Lassen
5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains
1371
Comment
UC604679
Gilia modocensis
Farris Farris
1935-6-15
Lassen
Susanville
1310
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
CHSC93697
Gilia ochroleuca
Lowell Ahart; John Dittes
2005-6-2
11990
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
CHSC25309
Gilia salticola
Pauleen Broyles
1977-6-1
156
Lassen
Skedaddle Ranch Road at South Fork Reservoir turn-off, ca 8 km ne of Herlong.
1660
Comment
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
CHSC25915
Gilia sinuata
K. R. Stern
1967-7-1
2437
Lassen
Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station.
1554
Comment
CHSC71242
Gilia sinuata
Vernon H. Oswald; Lowell Ahart
1998-6-4
9146
Lassen
Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia.
1389
Comment
SBBG52268
Gilia sinuata
C. Davidson
1975-6-7
2756
Lassen
1 mi E of Beckwourth Pass on Hwy 70
Comment
UC1609120
Gilia sinuata
Vernon H. Oswald and Lowell Ahart
1993-6-14
5545
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); w shore Eagle Lake, at Sandy Beach
1566
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
OBI77053
Glyceria borealis
Anthony Baniaga
2011-7-23
463
Lassen
Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4
1700
Comment
CAS-BOT-BC280597
Glyceria elata
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49473
Lassen
Elysian Valley, west of Janesville
1325
Comment
CAS-BOT-BC280599
Glyceria elata
John Thomas Howell; Gordon H. True
1973-8-1
50184 A
Lassen
Gold Run Creek road south of Susanville, Diamond Range
1584
Comment
CHSC113079
Gnaphalium palustre
Lowell Ahart; John Dittes
2013-7-22
18861
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
CHSC99290
Gnaphalium palustre
Lowell Ahart; John Dittes
2008-6-22
15032
Lassen
About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber.
1262
Comment
UC1483835
Gnaphalium palustre
G. Schoolcraft
1980-7-22
Lassen
nw of BLM fire station (along Hwy 395)
1630
Comment
CHSC106078
Gratiola ebracteata
Lowell Ahart; John Dittes
2010-7-31
17012
Lassen
Bottom of small wash, 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
CHSC60414
Gratiola ebracteata
Mary Ann Showers
1992-6-13
2543
Lassen
Shoreline at western end of Widow Lake. Lassen Volcania National Park.
2072
Comment
CHSC117760
Gratiola heterosepala
Virginia Dains; Joanne Crawford
2016-6-9
Lassen
Modoc Plateau. BLM Eagle Lake Field Office. 8 km southeast of Horse Lake, 23 km northwest of Shaffer Mtn.
1470
Comment
CHSC7711
Grayia spinosa
Beverley J. Wise
1969-5-18
7
Lassen
13.4 mi. east of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215.
1524
Comment
HSC27351
Grayia spinosa
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19302
Lassen
Along Hwy. 395 about 4 mi. E of Standish
Comment
UC1136436
Grayia spinosa
E. Sawyer
1935-6-27
226
Lassen
Long Valley Sierraville Quad., Long Valley
Comment
UC585073
Grayia spinosa
E. B. Babcock and G. L. Stebbins Jr.
1936-6-8
1777
Lassen
4 mi. s. Ravendale (n. end Secret Valley); n. end Secret Valley
1371
Comment
UC7402
Grayia spinosa
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3273
Lassen
Honey Lake Valley
Comment
UCD55266
Grayia spinosa
Ellen Dean
2006-5-15
3064
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
SEINET4175755
Grayia spinosa
F. B. Headley
1915-5-28
s.n.
Lassen
Honey Lake
Comment
CHSC117540
Grindelia nana
Lowell Ahart; John Dittes
2016-7-13
21197
Lassen
Drying strand of the pond near the overflow, 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.
1289
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
UC1776686
Grindelia squarrosa var. serrulata
G. Schoolcraft
1999-8-23
2880
Lassen
Near turnoff to Janesville along Hwy 395
1280
Comment
UC1533130
Gymnosteris parvula
G. Schoolcraft
1986-5-14
1567
Lassen
near road at stateline in Tuledad Canyon Tuledad Canyon
1524
Comment Read comments Nov 4 2011
RSA170326
Gypsophila paniculata
T. C. Fuller
1963-7-16
10923
Lassen
Lassen County: N of Cemetery from which ti escaped, Janesville
Comment
CDA36783
Gypsophila paniculata
D. B. Joley
1976-6-22
1
Lassen
Janesville.
0
Comment
SEINET3818101
Habenaria leucostachys
A. A. Heller
1938-1
Lassen
Comment
CAS-BOT-BC231154
Hackelia cusickii
G. Schoolcraft
1988-7-7
1810
Lassen
About 14 air miles NE of Ravendale
1798
Comment
CAS-BOT-BC231156
Hackelia cusickii
Mrs. A S. Baldwin
1928-5-1
s.n.
Lassen
Coyote Flat, over ridge from Dixie Village
Comment
JEPS67931
Hackelia micrantha
Jos. Grinnell
1928-6-29
Lassen
Butte Lake
1889
Comment
POM72793
Hackelia micrantha
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt. Susanville. Perkin's Ranch.
2226
Comment
CDA36354
Halogeton glomeratus
B. Villegas
2011-8-25
Lassen
Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd.
0
Comment
CHSC7647
Helianthus annuus
Beverley J. Wise
1948-8-23
21
Lassen
5 mi. N.W. of Susanville of Las. Co. Rd. 201.
1371
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
CAS-BOT-BC305662
Helianthus cusickii
David D. Keck; J. Clausen
1935-6-24
3739
Lassen
2 mi. S. of Ravendale
1464
Comment
RSA17683
Helianthus cusickii
Elmer I. Applegate
1934-5-4
8927
Lassen
South end of Secret Valley
Comment
CAS-BOT-BC305785
Helianthus nuttallii
Herbert L. Mason
1947-8-11
13492
Lassen
Highway 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County
Comment
RSA783699
Heliotropium curassavicum
R. R. Halse
2010-8-25
8086
Lassen
Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake.
1559
Comment
SEINET10497129
Heliotropium curassavicum var. oculatum
Mary Susan Taylor
1974-1
Taylor 269
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
CHSC91196
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
CHSC30620
Hesperochiron californicus
Eric Miller
1975-7-9
14
Lassen
E. of Dirt road adjacent to Coleman Lake, 30 ft. S. of overflow.
1950
Comment
CHSC7686
Hesperochiron californicus
Beverley J. Wise
1969-4-20
45
Lassen
14.6 mi. north of Susanville on Hwy 139 (Willow Creek Valley).
1463
Comment
CHSC5258
Hesperochiron pumilus
J. B. Kimsey
1946-6-11
Lassen
Aspen Grove, Pine Creek near Eagle Lake.
1584
Comment
SEINET5499822
Hesperochiron pumilus
C. G. Gulling
1905-1
s.n.
Lassen
Big Meadows
Comment
UC1069088
Hesperochiron pumilus
A. Simontacchi
1940-5-9
696
Lassen
4.4 mi. s.-s.e. of B.M. 7310 on Blacks Mt.; Lassen Nat'l Forest, Halls Flat Quad.
Comment
CAS-BOT-BC180030
Hesperochiron pumilus
E. K. Balls
1950-5-19
14770
Lassen
Ash Creek Public Camp, off rd. from Adin to Madeline.
Comment
JEPS17743
Hesperolinon micranthum
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5416
Lassen
along Smoke Creek Ranch Rd. 6 mi e jnct. with U.S. 395; Bull Flat, Deep Creek
1428
Comment
JEPS27188
Hesperolinon micranthum
Lauramay T. Dempster
1961-6-17
1670
Lassen
about 4 mi sw junction with Richmond Road (s of Susanville); Gold Run Creek
Comment
NY1002357
Hesperolinon micranthum
G. Schoolcraft
1984-7-30
1324
Lassen
About 1 mile east of Post Camp
1707
Comment
UC1523712
Hesperolinon micranthum
Gary Schoolcraft
1981-6-25
478
Lassen
East Fork of Wellard Creek
1584
Comment
UC17262
Hesperolinon micranthum
M. S. Baker and Frank Nutting
1894-7-2
Lassen
s side Dixey Mts.
Comment
POM87379
Hesperolinon micranthum
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1220
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
CAS-BOT-BC310910
Heterotheca villosa
Margaret Williams
1974-7-27
74- 61 -61
Lassen
West of Hwy 395 and south of Hwy 70. Near Hallelujah Junction
1493
Comment
UCR244106
Heterotheca villosa
Jim Andre, G. L. Clifton
1993-6-9
19697
Lassen
Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary
1631
Comment
CAS-BOT-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
CHSC98320
Hieracium greenei
B. Castro; L. P. Janeway
2005-7-10
1505
Lassen
Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location.
1566
Comment
CDA7975
Hieracium scouleri
T. C. Fuller
1963-7-15
12904
Lassen
Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin.
0
Comment
CHSC105247
Hieracium scouleri var. nudicaule
Lowell Ahart; John Dittes
2010-7-31
16973
Lassen
About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) southeast of Adin.
1508
Comment
UC20698
Hippuris vulgaris
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3334
Lassen
Honey Lake Valley, Honey Lake
1219
Comment
OBI77055
Hordeum brachyantherum
Anthony Baniaga
2011-8-4
487
Lassen
Lassen NF. About 1/2 mi WNW of Griffith Hill along 30n21. Swain Mtn quad. T30N R8E sec 8 NE of NW
1907
Comment
SEINET7297784
Hordeum brachyantherum
A. A. Beetle
1941-1
2818
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak, open meadow.
Comment
CAS-BOT-BC280876
Hordeum brachyantherum subsp. brachyantherum
A. A. Beetle
1941-6-28
2800
Lassen
10 miles west of Chester
1524
Comment
UC506970
Hordeum brachyantherum subsp. brachyantherum
George A. Fischer and Irwin H. Johnson
1933-7-12
F 232
Lassen
Patterson Flat
1737
Comment
UC53617
Hordeum brachyantherum subsp. brachyantherum
M. S. Baker and Frank Nutting
1894-7-4
Lassen
Dixey Valley
Comment
CAS-BOT-BC284714
Hordeum jubatum
John Thomas Howell; Gordon H. True
1973-8-1
50198
Lassen
Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville
2194
Comment
JEPS28711
Horkelia fusca subsp. tenella
George W. Gillett
1957-7-29
942
Lassen
1/4 mi above Butte Lake (Along trail between Butte Lake and Snag Lake); Lassen Volcanic National Park
1859
Comment
UC1609471
Horkelia fusca subsp. tenella
Vernon H. Oswald and Lowell Ahart
1993-6-28
5577
Lassen
0.2 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley, e of Poison Lake); e of Poison Lake, e side of Grays Valley
1749
Comment
CAS-BOT-BC536220
Horkelia fusca var. parviflora
Louella Bass
1973-6-15
EV- 112
Lassen
Elysian Valley, Sierra Nevada
1325
Comment
CAS-BOT-BC514265
Horkelia fusca var. pseudocapitata
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1524
Comment
CHSC71324
Horkelia tridentata subsp. tridentata
Vernon H. Oswald
1998-6-22
9229
Lassen
Champs Flat Rd. (A-21) 1.6 mi north of Hwy. 44, ca. 18 air mi north of Westwood.
1764
Comment
RSA122624
Hydrophyllum capitatum var. alpinum
L. R. Short
1936-4-28
S- 333
Lassen
MDM, Burgess Spr. Exp. Range.
1753
Comment
SEINET10472162
Hypericum formosum subsp. scouleri
Mary Susan Taylor
1974-1
Taylor 283
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
CHSC41841
Hypericum formosum var. scouleri
P. V. Caldwell
1972-7-13
271
Lassen
Eagle Lake. Growing scattered on edge of upper Papoose Creek above forest road to Papoose Meadows.
Comment
SEINET5344266
Hypericum scouleri
C. G. Gulling
1905-1
s.n.
Lassen
Big Meadows
Comment
CHSC52812
Iliamna bakeri
G. Schoolcraft
1981-7-29
552
Lassen
On rocky slopes of McDonald Peak near top.
2377
Comment
NY52523
Iliamna bakeri
G. Schoolcraft
1983-8-3
1129
Lassen
5 miles w of Madeline
1767.8
Comment
SD61029
Iliamna bakeri
Darley F. Howe
1964-8-2
3924
Lassen
Hillside above Parsnip Creek, Warner Mountains; Modoc National Forest.
1829
Comment
UC1037223
Ipomopsis aggregata
Leo Whitney
1934-7-6
1591
Lassen
ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley
Comment
HSC69077
Ipomopsis aggregata
Gary Schoolcraft
1979-7-12
145
Lassen
NW side of Shinu Peaks
2134
Comment
CHSC13883
Ipomopsis aggregata subsp. formosissima
S. Villard
1973-7-12
65
Lassen
Gallatin Peak.
1066
Comment
RSA18257
Ipomopsis aggregata subsp. formosissima
Wolf
1929-9-1
3785
Lassen
Mt. Lassen National Park between Grassy Lake and Snag Lake
Comment
CHSC59781
Ipomopsis congesta
Mary Meyer
1980-7-15
Lassen
Found in ash barrens.
1546
Comment
CHSC111244
Iris missouriensis
B. Castro; L. P. Janeway
2012-7-2
1936
Lassen
Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Moun-tains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch.
1604
Comment
CHSC36461
Iris missouriensis
Susan H. Euing
1982-6-4
15
Lassen
Ca. 3/4 mi n of Murrer's Upper Meadow.
Comment
CHSC36493
Iris missouriensis
Theresa Costa
1982-6-4
33
Lassen
Ca. 3/4mi n Murrer's Upper Meadow.
Comment
RSA0025414
Isoetes nuttallii
Forrest Freund
2013-5-23
192
Lassen
HWY 44. Depression on the north side of the road. Plants in open patches near center of the pool.
1653
Comment
UC2062873
Isoetes nuttallii
Forrest Freund
2016-5-19
258
Lassen
Pappoose meadow.
Comment
CHSC117178
Isoetes orcuttii
Lowell Ahart; John Dittes
2016-6-7
21016
Lassen
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.
1397
Comment
CHSC77255
Isolepis
G. Schoolcraft
1997-8-4
2675
Lassen
W of Willow Creek Valley.
1554
Comment
CHSC30626
Iva axillaris
T. M. Lane
1975-7-7
41
Lassen
Along Hwy 395, 5 km nnw of Termo; 56 km s of Alturas.
1815
Comment
SD64329
Iva axillaris
Darley F. Howe
1966-8-25
Lassen
41 miles south of Alturas on Highway 395.
1675
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
UC1037332
Iva axillaris subsp. robustior
Leo Whitney
1934-9-5
1958
Lassen
Fredonyer Pass; Lassen National Park
1676
Comment
UC1537066
Iva axillaris subsp. robustior
Gordon H. True Jr.
1936-6-21
517
Lassen
se of Litchfield; Honey Lake Valley
1219
Comment
CHSC57121
Ivesia paniculata
Mary Meyer
1980-7-1
Lassen
Ash Valley.
1402
Comment Read comments Jan 15 2009
HSC77272
Ivesia paniculata
Barbara Kelly
1977-8-9
559
Lassen
Along dirt road from Adin, 16.25 mi. W of Madeline
Comment
CHSC30562
Juncus balticus
Sori H. Shad
1970-7-1
5
Lassen
Found on the side of spring above Gallaten Beach.
2438
Comment
UC1100949
Juncus balticus
Verne Grant and Irving Schneider
1947-7-31
8211
Lassen
ne quarter of George Williams section 19 Madeline Plain
Comment
HSC26016
Juncus bryoides
F. J. Hermann
1972-5-17
24752
Lassen
8 mi. W of Susanville
1677
Comment
CHSC117520
Juncus bufonius var. bufonius
Lowell Ahart; John Dittes
2016-7-13
21140
Lassen
Scattered along the south 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 ofk Adin, hills at the southern slope of Big Valley.
1289
Comment
CHSC117196
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, hills at the southern slope of Big Valley.
1289
Comment
JEPS67134
Juncus ensifolius
W. L. Jepson
1918-8-2
7794
Lassen
Constantia Honey Lake Valley
1219
Comment
JEPS126565
Juncus hemiendytus var. hemiendytus
Lowell Ahart, John Dittes
2016-6-7
20991
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, hills at the southern slope of Big Valley.
Comment
CAS-BOT-BC312669
Juncus luciensis
John Thomas Howell; Louella Bass
1974-7-10
50538
Lassen
Elysian Valley
1325
Comment
POM111106
Juncus mexicanus
Marcus E. Jones
1897-6-23
s.n.
Lassen
Amedee.
1220
Comment
CHSC67714
Juncus nevadensis
James D. Jokerst
1983-7-25
1899
Lassen
Madeline Plains W of Termo.
Comment
HSC95327
Juncus nevadensis
Gordon Leppig
1998-6-12
933
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
UC1601786
Juncus nevadensis
Baker and Nutting
1894-7-25
Lassen
Willow Creek
Comment Read comments Jul 3 2013
CHSC106359
Juncus trilocularis
Lowell Ahart; John Dittes
2010-7-31
17026
Lassen
About 20 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1520
Comment
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
CHSC5076
Juniperus occidentalis
A. W. Harvilik
1967-6-23
9
Lassen
Ca. 50 ft from Eagle Lake Biology Station.
1554
Comment
HSC1267
Juniperus occidentalis
L. H. Myers
1963-4-10
40
Lassen
1.0 mi. S of Janesville
1280
Comment
UC333780
Juniperus occidentalis
unknown
1893-5-28
Lassen
Susanville
Comment
UC773866
Juniperus occidentalis
L. R. Short
1936-9-30
S- 508
Lassen
Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range
1828
Comment
UCD133784
Juniperus occidentalis
K. M. Meyer; A. Townesmith
2007-7-19
132
Lassen
Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek.
1459
Comment
UCR164508
Juniperus occidentalis
Maile Neel
2000-4-29
G- 2
Lassen
Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station,
1400
Comment
SEINET10613513
Juniperus occidentalis subsp. australis
Mary Susan Taylor
1982-5-29
Taylor 4570
Lassen
T22N R17E e1/2 sw1/4 sec 23. Loyalton quad. In sagebrush Scrub along dirt road paralleling Highway 395 on its east side, ca 1/2 mile north of 395 jct with Scott Road, ca 20 miles northof Reno.
1525
Comment
SEINET10932817
Juniperus occidentalis subsp. australis
Mary Susan Taylor
1982-5-29
Taylor 4570
Lassen
T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft.
1524
Comment
UCR4282
Juniperus occidentalis var. australis
Frank C. Vasek
1965-8-31
650831- 06
Lassen
3.8 mi west of the Ranger Station at Susanville
Comment
UCR4284
Juniperus occidentalis var. occidentalis
Frank C. Vasek
1965-9-1
650901- 01
Lassen
On Karlo Road 3.6 mi north of the junction of Karlo Road & Litchfield Road, north of Susanville
1355
Comment
SEINET11056886
Juniperus occidentalis var. occidentalis
D. Charlet
1993-7-13
1582
Lassen
Fort Sage Mountains, along road W of OHV trailhead.
1450
Comment
NY20362
Juniperus osteosperma
N. H. Holmgren
1970-7-28
4625
Lassen
This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request.
Comment
UCR148843
Juniperus osteosperma
David A. Charlet
1993-7-13
1581
Lassen
Great Basin, Fort Sage Mountains at O.H.V. trailhead
1491
Comment
SEINET11066903
Juniperus osteosperma
G. Schoolcraft
1998-4-27
2705
Lassen
N end of Fort Sage Mountains, W slope.
1951
Comment
CHSC57200
Kelloggia galioides
Mary Meyer
1980-7-21
Lassen
Beneath white fir stand.
2103
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
NY539721
Kochia americana
G. Schoolcraft
1998-9-14
2808
Lassen
Honey Lake Valley northwest of Duck Lake
1219.2
Comment
CHSC60869
Koeleria macrantha
Vernon H. Oswald; Lowell Ahart
1993-6-28
5586
Lassen
Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. In meadow.
1731
Comment
CHSC99520
Koeleria macrantha
Lowell Ahart; John Dittes
2008-6-19
14896
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
UC1132160
Koeleria macrantha
A. Simontacchi
1940-7-8
945
Lassen
5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle
Comment
UC1483844
Koeleria macrantha
G. Schoolcraft
1980-7-28
335
Lassen
e side Tule Mountain; e side of Tule Mtn.
2042
Comment
UCD85786
Koeleria macrantha
Beecher Crampton
1960-6-18
5727
Lassen
Southern Warner Mtns., vicinity of Blue Lake Ranch.
1981
Comment
UCD86011
Koeleria macrantha
L. Whitney
1935-6-24
s.n.
Lassen
Squaw Valley.
Comment
UC891450
Kyhosia bolanderi
A. A. Heller
1937-9-1
15342
Lassen
about a mile e of Westwood
Comment
JEPS94084
Lactuca saligna
Vernon H. Oswald and Lowell Ahart
1998-9-8
9574
Lassen
Hwy. 299 at the R.R. overpass on e. side of Nubieber (near the hwy.)
1255
Comment
UC74070
Lactuca tatarica subsp. pulchella
J. Burtt Davy
1897-6-17
Lassen
Comment
JEPS127275
Lagophylla ramosissima
Lowell Ahart, John Dittes
2016-7-13
21109
Lassen
80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
RSA0009792
Lagophylla ramosissima
Marcus E. Jones
1897-6-21
s.n.
Lassen
Chat.
1616
Comment
JEPS94782
Lagophylla ramosissima subsp. ramosissima
Vernon H. Oswald and Lowell Ahart
1998-9-8
9575
Lassen
Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber; , Highway 299
1255
Comment
RSA0042601
Lasthenia glaberrima
Lowell A. Ahart, John Dittes, Todd Sloat
2013-6-8
18739
Lassen
About 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1268
Comment
POM29621
Lathyrus
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkins Ranch.
1829
Comment
CAS-BOT-BC321493
Layia glandulosa
Noel H. Holmgren; Patricia K. Holmgren
1980-7-4
9506
Lassen
Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale
1890
Comment
CHSC106679
Layia glandulosa
B. Ignacio
2008-5-3
Lassen
Fort Sage Mountains.
1520
Comment
CAS-BOT-BC321491
Layia glandulosa
Milo S. Baker
1936-6-16
8360
Lassen
About 30 mi N of Susanville along Hwy 395.
Comment
POM54275
Layia glandulosa subsp. glandulosa
Milo S. Baker
1890-1
s.n.
Lassen
Milford.
Comment
RSA170169
Lemna minor
W. L. Jepson
1918-8-16
8000
Lassen
Merrillville
1524
Comment
HSC95315
Lemna minuta
Gordon Leppig, Tony LaBanca
1997-6-29
526
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CHSC4789
Lemna trisulca
R. Carter
1967-7-13
591
Lassen
Ca. 5 mi E of Eagle Lake Biology Station, at point where rd. comes nearest to Willow Creek.
1560
Comment
UC1101266
Lemna trisulca
Malcolm A. Nobs, S. Galen Smith
1949-7-22
1076
Lassen
10 mi n of Susanville (along Willow Creek, Willow Creek Valley); Willow Creek Valley, Willow Creek
Comment
CAS-BOT-BC88821
Lepidium campestre
Louella Bass
1974-5-23
EV 143
Lassen
Sierra Nevada. Elysian Valley.
1325
Comment
CHSC99531
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
CAS-BOT-BC88939
Lepidium dictyotum
Arnold Tiehm
1980-5-29
5747
Lassen
North end of Honey Lake Valley, just north of Hot Springs 1.1 air mile north-northwest of Wendel.
1231
Comment
NY76542
Lepidium latifolium
G. Schoolcraft
1984-7-31
1330
Lassen
Along Highway 395 about 1 mile north of Ravendale Fire Station
1615.4
Comment
CHSC13634
Lepidium perfoliatum
M. S. Taylor
1974-7-8
259
Lassen
On e side of RT A3, ca. 1 mi n of Honey Lake, ca. 1 mi s of Standish, Honey Lake Wildlife Refuge.
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
HSC63973
Lepidium perfoliatum
J. P. Smith, J. O. Sawyer
1971-5-23
4665
Lassen
Junction of Hwy. 139 and road to Thermo
Comment
UCD115849
Lepidium perfoliatum
R. Tofsrud
1951-7-13
s.n.
Lassen
Susanville area.
Comment
OBI48159
Lepidium perfoliatum
Rhonda Riggins
1989-4-27
1642
Lassen
US 395, 14 mi N Litchfield, 21 mi S Ravendale
1311
Comment
UC106733
Leptodactylon pungens
T. S. Brandegee
1892-6-29
Lassen
Janesville
Comment
UC1123943
Leptodactylon pungens
E. Sawyer
1935-6-27
230
Lassen
Long Valley; Sierraville Quad., Long Valley
Comment
UC584301
Leptodactylon pungens
G. L. Stebbins Jr. and J. A. Jenkins
1937-7-10
2284
Lassen
summit and e slope of Diamond Mt.
2194
Comment
CHSC61229
Leptosiphon ciliatus
P. V. Caldwell
1972-6-29
260
Lassen
Eagle Lake. Stream that runs into Upper Deans Meadow, on bank.
Comment
CHSC4794
Leptosiphon harknessii
R. Carter
1967-6-29
571
Lassen
Roadside, n side of rd. On rd to Murrer's Medow. Eagle Lake.
1584
Comment
CHSC60372
Leptosiphon harknessii
Mary Ann Showers
1992-6-12
2518
Lassen
Lassen Volcanic National Park. Meadow, Butte Lake.
1859
Comment
SEINET3364450
Leptosiphon harknessii
Marcus E. Jones
1897-7-2
Lassen
Susanville
Comment
CAS-BOT-BC334598
Leucanthemum vulgare
G. Schoolcraft
1987-6-17
1746
Lassen
Along Hwy 36 about 3 miles east of Westwood
1554
Comment
CHSC61192
Leucocrinum montanum
Vernon H. Oswald; Lowell Ahart
1993-5-12
5375
Lassen
NE side of Hwy. 44, 1.6 mi NW of its intersection with A21 (to Westwood).
1737
Comment
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
SEINET3887154
Leucocrinum montanum
D. W. McNeal
1981-5-10
2488
Lassen
Beside Hwy. #395, 4.3 mi. S. of Ravendale.; 0
Comment
SEINET12326117
Leucophysalis nana
A. Seneres, Harold, N.
1983-1
101
Lassen
Road 21 to Silver Lake, Lassen National Forest
1821
Comment
CHSC61168
Lewisia pygmaea
Vernon H. Oswald; Lowell Ahart
1993-5-12
5387
Lassen
Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. In a meadow on the N side of the road.
1719
Comment
CAS-BOT-BC283770
Leymus cinereus
John Thomas Howell
1973-7-10
49770
Lassen
Near Westwood
1554
Comment
CDA7155
Leymus cinereus
G. Schoolcraft
1993-9-18
s.n.
Lassen
1 mile N of Sagehen on W side of Hwy 395.
Comment
UC188958
Leymus cinereus
Milo S. Baker
Lassen
Dixie Valley
Comment
RSA126617
Leymus condensatus
H. S. Yates
1936-8-12
6086
Lassen
McKenzie Meadows
1524
Comment
UCD86642
Leymus triticoides
J. Earl Coke
1931-6-1
s.n.
Lassen
Lassen County.
1524
Comment
CAS-BOT-BC436029
Ligusticum grayi
George W. Gillett
1957-7-21
870
Lassen
Lassen Volcanic National Park: Cameron Meadow
1950
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
POM109716
Lilium pardalinum
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkins Ranch.
1463
Comment
HSC15584
Lilium pardalinum subsp. pardalinum
Fred J. Kindel
1955-7-8
Lassen
Susan River
Comment
CHSC59098
Limosella acaulis
Vernon H. Oswald; Lowell Ahart
1992-8-25
5188
Lassen
Grassy Creek at the E end of Snag Lake. Lassen Volcanic National Park.
1850
Comment
CHSC60855
Limosella aquatica
Vernon H. Oswald; Lowell Ahart
1993-6-28
5602
Lassen
Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake.
1725
Comment
UC1101431
Limosella aquatica
Malcolm A. Nobs and S. Galen Smith
1949-7-20
1046
Lassen
Bieber
Comment
RSA0011457
Linanthus
R. F. Thorne, Larry E. DeBuhr
1975-8-22
46973
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line.
1616
Comment
POM74675
Linanthus pungens subsp. pulchriflorus
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
RSA715980
Linum lewisii
L. Ahart, John Dittes
2005-6-2
11935
Lassen
Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct.
1499
Comment
CHSC80221
Linum lewisii var. lewisii
Jeanne Boze
1981-6-12
110
Lassen
Along road to 5 corners, 3.1 from Eagle Lake Field Station.
1737
Comment
JEPS117582
Linum lewisii var. lewisii
Lowell Ahart, John Dittes
2010-7-31
16981
Lassen
Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin
1516
Comment
CAS-BOT-BC435428
Lithophragma glabrum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49166
Lassen
Elysian Valley northeast of Janesville; Sierra Nevada
1325
Comment
SEINET6032241
Lithophragma glabrum
J. A. Young
1978-4-13
s.n.
Lassen
Meyers Ranch, Adin
Comment
CAS-BOT-BC428415
Lithophragma tenellum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49165
Lassen
Elysian Valley northwest of Janesville.
1325
Comment
CHSC29956
Lithophragma tenellum
Robin L. Ondricek
1978-5-25
25
Lassen
150 yds N of cafeteria at Eagle Lake Field Station.
1554
Comment
JEPS119670
Lithospermum arvense
Lowell Ahart, John Dittes
2012-7-11
18351
Lassen
About 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittvile, 3955 feet east of Lassen - Shasta County Line, Fall River Valley.
Comment
CHSC91203
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
POM101211
Loeflingia squarrosa
Marcus E. Jones
1897-6-18
s.n.
Lassen
Chat. [also Chats, a former settlement]
1524
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
RSA452590
Lomatium donnellii
Christopher Davidson
1975-6-7
2755
Lassen
1 mile E of Beckwourth Pass on Hwy 70.
1524
Comment
JEPS125805
Lomatium foeniculaceum subsp. macdougalii
William Harnach
2010-6-8
1243
Lassen
2 miles west of the California Nevada state line, north side of Fort Sage Road, northeast of Doyle, CA.
Comment
NY1160625
Lomatium macrocarpum
N. H. Holmgren
1980-7-3
9487
Lassen
U.S. Highway 395, 7.4 km (4.6 mi) south of Ravendale.
1620
Comment
UC1479579
Lomatium macrocarpum
G. Schoolcraft
1980-4-8
204
Lassen
just n. Viewland (w. side of Hwy. 395)
1371
Comment
RSA517344
Lomatium nevadense
Barbara Ertter, Gary Schoolcraft
1987-6-16
s.n.
Lassen
Skeedaddle Mountains on NE side of Honey Lake
2134
Comment
RSA0049670
Lomatium nevadense var. nevadense
Dean Wm. Taylor
2012-5-15
21196
Lassen
Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley)
1676
Comment
UC1123082
Lomatium nevadense var. nevadense
A. Simontacchi
1940-5-10
689
Lassen
7.3 mi. w. Harvey Mt. Lookout (Lassen Nat'l Forest); , Halls Flat Quad.
Comment
SEINET5333506
Lomatium nevadense var. nevadense
D. H. French
1968-6-3
2883
Lassen
Near Hwy, 395, 1.1 mi S of Ravendale, just behind gas station-cafe-bar building.
Comment
UC1123036
Lomatium nevadense var. parishii
K. E. Bradshaw
1939-5-27
241 A
Lassen
Plot 39-1 Black Mt. Exp. Forest (Lassen Nat'l Forest); , Halls Flat Quad., Black Mt. Exp. Forest
Comment
UC1123084
Lomatium nevadense var. parishii
A. Simontacchi
1940-5-10
689 A
Lassen
7.3 mi. w. Havey Mt. Lookout (Lassen Nat'l Forest); , Halls Flat Quad.
Comment
JEPS103161
Lomatium plummerae
G. Schoolcraft
1996-5-13
2519
Lassen
Ft. Sage OHV area 3 mi. NE of Doyle
1402
Comment
UC1730232
Lomatium plummerae
L. P. Janeway and Glenn Clifton
1998-7-8
5721
Lassen
ridgetop saddle 2.5 mi NW of Red Rock (junction of Roads 28N08, 29N10, 213, and 28N55)
1988
Comment
JEPS25531
Lomatium ravenii
Rimo Bacigalupi with Lincoln Constance
1959-6-16
7145
Lassen
2 mi. s. Ravendale
1615
Comment
LA35567
Lomatium ravenii
Lincoln Constance; Rimo Bacigalupi
1959-6-14
3672 ISOTYPE
Lassen
1 mi. S of Ravendale
1462
Comment
UC1559672
Lomatium ravenii
Gary Schoolcraft
1988-5-4
1792
Lassen
ca. 3 mi. s.e. Ravendale
1615
Comment
UC1924598
Lomatium triternatum
Debra Valov
2006-5-28
2006008
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1305
Comment
POM78250
Lomatium vaginatum
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin s Ranch.
1463
Comment
RSA0049611
Lomatium vaginatum
Dean Wm. Taylor
2012-6-7
21232
Lassen
Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139
1635
Comment
RSA370319
Lomatium vaginatum
A. Tiehm, Margaret Williams, Gary Schoolcraft
1986-5-12
10345
Lassen
6.7 road miles east of Highway 395 on dirt road to Smoke Creek and the Smoke Creek Desert
1418
Comment
UC1594612
Lotus nevadensis var. nevadensis
Vernon H. Oswald and Lowell Ahart
1992-7-16
5106
Lassen
1.2 mi se County Rd. A21 (Long Lake on s side of Hwy 44, between Old Station and Susanville); Long Lake
1745
Comment
CHSC117281
Ludwigia palustris
Lowell Ahart; John Dittes
2016-7-15
21220
Lassen
About 50 yards west of the road and 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
CHSC37703
Lupinus arbustus
M. S. Taylor
1982-8-27
5051
Lassen
Crystal Peak, Diamond Mt, 6 air mi sw of Doyle.
2377
Comment
JEPS28489
Lupinus arbustus
George W. Gillett
1957-7-29
956
Lassen
near the Butte Lake Trail (above Snag Lake); , near the Butte Lake Trail
1859
Comment
SEINET12765226
Lupinus arbustus
Vernon H. Oswald
1997-6-24
8635
Lassen
South of Susan ville near the small pond on the crest of Diamond Mtn. about midway between Aspen Flat and Red Rock Lookout.; 0
2249
Comment
POM252845
Lupinus arbustus subsp. silvicola
A. A. Heller
1938-6-4
15142
Lassen
In open places near Fredonyer Pass.
1707
Comment
UC1553386
Lupinus argenteus
G. Schoolcraft
1988-8-24
1856
Lassen
16 mi e Adin; Ash Valley RNA/ACEC
1554
Comment
UCD35223
Lupinus argenteus var. argenteus
Beecher Crampton
1954-7-6
2079
Lassen
Madeline.
1524
Comment
CAS-BOT-BC208734
Lupinus argenteus var. heteranthus
Walter Knight; Irja Knight
1981-5-20
4116
Lassen
27 miles S of Alturas
Comment
CAS-BOT-BC208736
Lupinus argenteus var. heteranthus
W. W. Eggleston
1927-7-14
21497
Lassen
7 1/2 miles north of Bogard Staton, Bogard Ranger Station, Lassen Forest
1500
Comment
CHSC36284
Lupinus argenteus var. heteranthus
M. S. Taylor
1982-6-12
4653
Lassen
In Doyle, ca. 0.5 mi e of Hwy 395.
Comment
CHSC99140
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
SD147580
Lupinus argenteus var. heteranthus
John Thomas Howell, Gordon H. True, Margaret Williams
1973-5-12
49232
Lassen
On Hwy 395 NW of Doyle on the road to Milford
1280
Comment
UC1129448
Lupinus argenteus var. heteranthus
A. E. Wieslander
June 1929
109
Lassen
Constantia; Sierraville Quad.
Comment
UC1537121
Lupinus argenteus var. heteranthus
Gordon H. True Jr.
1936-6-27
556
Lassen
near top Hot Spring Mountain; near top of Hot Spring Mountain
1828
Comment
CHSC93547
Lupinus argenteus var. meionanthus
Lowell Ahart; John Dittes
2005-6-2
11937
Lassen
Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction.
1600
Comment
POM253163
Lupinus caudatus
A. A. Heller
1938-6-23
15203
Lassen
Along U.S. Highway 395 just outside of Johnstonville.
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
RSA59517
Lupinus caudatus
E. K. Balls
1950-5-21
14824
Lassen
Standish, 7 miles from junction of Highway 36 and 395.
1250
Comment
SEINET10490608
Lupinus caudatus subsp. caudatus
Jeffrey Huber
1971-6-2
Huber 145
Lassen
6 mi. N of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffrey pine along high ridge and in sandy wash.
1402
Comment
SEINET10490714
Lupinus caudatus subsp. caudatus
Paul Gallian, David B. Dunn
1971-6-2
Gallian 481
Lassen
5 mi. S of milford near honey lake on us hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - jeffery pine on mountain range to w at Approx. The same altitude.
1250
Comment
SEINET10969761
Lupinus caudatus subsp. caudatus
Paul Gallian, David B. Dunn
1971-6-2
Gallian 511
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
RSA3037
Lupinus confertus
Carl B. Wolf
1931-9-6
2404
Lassen
0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley
1280
Comment
SEINET10940170
Lupinus confertus
Thomas W. Nelson, Jane P. Nelson
1981-7-17
Nelson 6735
Lassen
Along State Route 395, 22 mi S of Susanville, California, at milepost marker 46.80. Sagebrush scrub.
Comment
SEINET10687175
Lupinus croceus
Karen M. Meyer, Andrew Townesmith
2007-7-23
Meyer 154
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
UC169643
Lupinus lepidus var. confertus
T. S. Brandegee
1892-6-27
Lassen
Milford
Comment
HSC103613
Lupinus lepidus var. confertus
Thomas W. Nelson, Jane Nelson
1981-7-17
6735
Lassen
Along State Route 395, 22 mi. S of Susanville at milepost 46.80
Comment
SDSU4676
Lupinus lepidus var. confertus
D. F. Howe
1960-9-21
2993
Lassen
2 miles north of Janesville on #395.
1219
Comment
SEINET8051636
Lupinus lepidus var. confertus
G. Schoolcraft
1992-8-11
2246
Lassen
Along Highway 395 near inters. of Janesville Road
1280
Comment
CHSC60356
Lupinus lepidus var. sellulus
Mary Ann Showers
1992-6-13
2535
Lassen
Lassen Vocanic National Park. Trail from Snag Lake jct to Widow Lake.
1828
Comment
SEINET9185950
Lupinus leucophyllus
Anthony Baniaga
2011-1
437
Lassen
Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE
1718
Comment
UC1129770
Lupinus leucophyllus
A. Simontacchi
1940-6-30
908
Lassen
4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle
Comment
UC15910
Lupinus leucophyllus
M. S. Baker and Frank Nutting
1894-7-12
Lassen
Pine Creek
Comment
CHSC99103
Lupinus microcarpus var. microcarpus
Lowell Ahart; John Dittes
2008-6-20
14969
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 miles (air) northeast of Bieber.
1263
Comment
UC15846
Lupinus microcarpus var. microcarpus
Mrs. R. M. Austin and Bruce
June 1898
2145
Lassen
Madaline Plains Madaline Plains <Madeline Plains>; Madaline Plains
Comment
RSA0005616
Lupinus onustus
Marcus E. Jones
1897-6-26
s.n.
Lassen
Susanville, Perkin's Ranch.
1463
Comment
UC138031
Lupinus onustus
T. S. Brandegee
1892-7-2
Lassen
Susanville
Comment
JEPS118457
Lupinus polycarpus
Lowell Ahart, John Dittes
2011-6-20
17498
Lassen
40 yards west of the stream, about 300 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
NY747611
Lupinus polyphyllus var. saxosus
H. D. D. Ripley
1944-5-30
5982
Lassen
2 miles south of Madeline
1707
Comment
UC1523758
Lupinus saxosus
Gary Schoolcraft
1983-6-7
968
Lassen
near Ash Valley
1706
Comment
RSA263046
Lupinus sellulus subsp. sellulus
B. J. Cox
1971-6-11
3179
Lassen
8 mi. W. of Susanville, on Calif. Hwy. 36.
1555
Comment
SEINET10490263
Lupinus subvexus var. transmontanus
David B. Dunn
1956-7-3
Dunn 11925
Lassen
Collected on roadside among volcanic rocks. Along hwy 395, 5.5 mi s of likely, Before dropping into valley. Color lavender. Sagebrush common.
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
CHSC112974
Lythrum tribracteatum
Lowell Ahart; John Dittes
2013-7-23
18902
Lassen
Dry drainage, 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
SEINET10872918
Machaerocarpus californicus
Mary Susan Taylor
1982-6-12
Taylor 4647
Lassen
T29N R10E ne/nw sec 13. Westwood quad. Aquatic in still pond on n side of West Fork of Susan River, s side of Hwy 36 at jct w/ Willow Cr Rd, 8 mi w Susanville.
Comment
CAS-BOT-BC342645
Madia citrigracilis
John Thomas Howell
1934-7-8
12494
Lassen
Spalding's, Eagle Lake
1584
Comment
UC905682
Madia citrigracilis
David D. Keck
1930-7-23
949
Lassen
Susanville Sierra Nevada, Susanville
1280
Comment
CAS-BOT-BC342657
Madia citriodora
David D. Keck; J. Clausen
1935-6-25
3761
Lassen
Susanville
1300
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
UC1136966
Madia elegans
L. R. Short
1936-6-26
S- 457
Lassen
Burgess Spr. Exp. Range Lassen Forest
1837
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
SD50990
Madia elegans
Darley F. Howe
1960-9-21
Lassen
2 miles north of Janesville on #395
Comment
UCD134243
Madia elegans
J. E. Stuart
1929-8-1
2035
Lassen
Roy Hardwood Ranch, Milford.
Comment
CHSC45693
Madia glomerata
Vernon Oswald
1986-7-22
2217
Lassen
Hwy 36, 11.3 mi e of the Plumas-Lassen County line, 0.5 mi sw of Fredonyer Pass.
1691
Comment
SEINET11601445
Madia gracilis
J. A. Young
1982-6-9
s.n.
Lassen
M. Meyer's Ranch, Adin, Ca.
1372
Comment
CAS-BOT-BC347441
Malacothrix floccifera
Louella Bass
1973-6-23
131
Lassen
Elysian Valley
1325
Comment
CHSC80607
Malacothrix glabrata
V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft
2001-6-2
10038
Lassen
North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain.
1828
Comment
SEINET11601669
Malacothrix glabrata
F. B. Henning
1915-5-28
s.n.
Lassen
Honeylake, Calif.
Comment
UC186080
Malacothrix glabrata
unknown
1892-6-22
Lassen
Honey Lake
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
HSC25433
Marsilea vestita
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19177
Lassen
Harvey Valley near Cone Springs
Comment
RSA252423
Marsilea vestita
R. F. Thorne, C. W. Tilforth
1969-9-5
39139
Lassen
Said Valley Reservoir.
Comment
RSA0011558
Marsilea vestita
R. F. Thorne, Larry E. DeBuhr
1975-8-22
46994
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line
1616
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
JEPS127277
Marsilea vestita subsp. vestita
Lowell Ahart, John Dittes
2016-7-13
21130 -B
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
JEPS97378
Marsilea vestita subsp. vestita
Vernon H. Oswald and Lowell Ahart
1995-8-14
7201
Lassen
N of Susanville (Horse Lake Rd (Lassen 536) at a BLM reservoir, 11.3 mi W of Hwy 395); Modoc Plateau
1737
Comment
JEPS114634
Matricaria discoidea
Lowell Ahart, John Dittes
2008-6-20
14911
Lassen
On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber
1263
Comment
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
CAS-BOT-BC348267
Matricaria occidentalis
M. S. Taylor
1982-6-12
4651
Lassen
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
CDA8329
Matricaria occidentalis
T. C. Fuller
1963-7-15
10886
Lassen
East of road to Susanville, 2.2 miles southeast of Pittville.
0
Comment
SEINET10475266
Matricaria occidentalis
Mary Susan Taylor
1982-6-12
Taylor 4651
Lassen
4010 ft. T28N R14E se sec 3. Standish quad. Alkali flats in Hartson Lake Refuge, 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville.
1222
Comment
CHSC93666
Medicago lupulina
Lowell Ahart; John Dittes
2005-6-2
11966
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
CHSC68889
Melica fugax
Vernon Oswald; Lowell Ahart
1997-6-24
8645
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
UC53652
Melica fugax
M. S. Baker and Frank Nutting
1894-7-12
Lassen
Pine Creek
Comment
UC972186
Melica fugax
Milo S. Baker
1952-4-24
12411
Lassen
ca 15 mi e Chester (at old road quarry)
Comment
UCD37478
Melica fugax
Beecher Crampton
1960-6-18
5726
Lassen
Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch.
1981
Comment
CHSC80722
Melica stricta
V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft
2001-6-2
10037
Lassen
Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road.
1828
Comment
UC593538
Melica stricta
E. B. Babcock, G. L. Stebbins Jr.
1936-6-7
1771
Lassen
Red Rock
1280
Comment
UCR67372
Mentha canadensis
George K. Helmkamp
1990-9-23
E- 16
Lassen
20 mi north of Litchfield along US Hwy 395
1437
Comment
JEPS107449
Mentzelia albicaulis
Lowell Ahart, John Dittes
2005-6-1
11888
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
SFV2375
Mentzelia albicaulis
I. L. Wiggins, D. B. Wiggins
1961-6-10
16323
Lassen
Sierra Nevada Along CA-Highway 36, about 6 miles west of Susanville.
1460
Comment
CHSC5300
Mentzelia dispersa
P. Balch
1955-7-22
Lassen
Paul Bunyan Rd., 3 1/2 mi from Susanville toward Eagle Lake.
1889
Comment
CHSC66392
Mentzelia dispersa
Vernon H. Oswald; Lowell Ahart
1996-6-17
7772
Lassen
Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants in dry soil on the edge of the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post.
1432
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
JEPS124810
Mentzelia laevicaulis
G. R. Ostrander
1965-7-12
67
Lassen
Growing along U.S. 395 15 miles N. of the junction of Calif. 70 and U. S. 395.
Comment
JEPS42757
Mentzelia montana
W. L. Jepson
1918-8-2
7773
Lassen
Beckwith Pass
1463
Comment
POM83245
Mentzelia montana
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1220
Comment
CAS-BOT-BC429081
Micranthes odontoloma
Alice Eastwood
1912-8-22
1861
Lassen
Trail from Morgans Springs to Lassen Butte
Comment
CHSC99301
Microseris laciniata subsp. laciniata
Lowell Ahart; John Dittes
2008-6-22
15036
Lassen
About 220 yards west of the road levee, open dry meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber.
1262
Comment
SEINET11601923
Microseris laciniata subsp. laciniata
D. W. Taylor
19519
Lassen
Pittville; County Road 404 4.5 road miles traveling south therefrom; uncultivated rocky plain southwest of the road bend
1006
Comment
POM34993
Microseris nutans
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
UC1070116
Microseris nutans
Robert W. Gardner
1937-6-16
G- 14
Lassen
Burgess Spring Experimental Range Halls Flat Quad.
1798
Comment
UC1136771
Microseris nutans
L. R. Short
1936-6-1
S- 353
Lassen
Lassen Forest
1859
Comment
UC450131
Microseris nutans
Franklin P. Nutting
Lassen
s side Dixie Mt.
Comment
CHSC29930
Microsteris gracilis
Robin L. Ondricek
1978-6-20
65
Lassen
Callatin Burn, 1.8 mi s of Five Corners.
2011
Comment Read comments Jan 31 2011
RSA122925
Microsteris gracilis subsp. humilis
L. R. Short, Wm. Gansberg
1936-6-2
S- 363
Lassen
Lassen [National] Forest. MDM, Burgess Spr. Exp. Range
1860
Comment
RSA74070
Microsteris gracilis subsp. humilis
Milo S. Baker
1952-5-23
12414
Lassen
Highway 36, east of Chester
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
UC1776670
Mimulus arvensis
G. Schoolcraft
1994-7-6
2356
Lassen
About 2 miles west of Boot Lake
2103
Comment
UC1609131
Mimulus breviflorus
Vernon H. Oswald and Lowell Ahart
1993-6-28
5609
Lassen
ne Poison Lake (n of Hwy. 44 on Rd. 33N06, nne of Burgess Meadow, sse flank of mtn.); Harvey Mtn.
1798
Comment
UC1063531
Mimulus breweri
A. Simontacchi
1940-5-21
762
Lassen
4.1 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle
Comment
SEINET230131
Mimulus densus
Noel H. Holmgren, Patricia K. Holmgren
1980-1
9512
Lassen
Observation peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale
2190
Comment
CHSC5905
Mimulus floribundus
M. West
1946-7-1
Lassen
Pine Creek, Eagle Lake.
1584
Comment
CHSC117184
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.
1397
Comment
UC26977
Mimulus guttatus
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3400
Lassen
Honey Lake Valley
Comment
UC526139
Mimulus guttatus
John Thomas Howell
1934-7-9
12518
Lassen
Bridge Creek Spring
Comment
CDA41794
Mimulus guttatus
T. C. Fuller
1961-5-17
6961
Lassen
Hot springs, Wendell.
0
Comment
HSC20753
Mimulus guttatus
M. T. Milligan
1964-7-16
130
Lassen
2 mi. W on the Silver Lake Rd., along Upper Susan River.
1829
Comment
JEPS23735
Mimulus inflatulus
Rimo Bacigalupi with S. Galen Smith
1957-6-28
5989
Lassen
7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Railroad, just e of U.S. Highway 395)
1676
Comment
JEPS23844
Mimulus inflatulus
Peter H. Raven with Otto T. Solbrig
1958-6-17
13298
Lassen
4.8 mi s Madeline (along United States Highway 395)
Comment
UC125195
Mimulus layneae
Baker and Nutting
Lassen
Big Valley
Comment
UC699729
Mimulus moniliformis
Farris Farris
1936-6-10
Lassen
Diamond Mountain
1828
Comment
CHSC59100
Mimulus moschatus
Vernon H. Oswald; Lowell Ahart
1992-8-25
5182
Lassen
Lassen Volcanic National Park. Grassy creek near the S end of Snag Lake.
1853
Comment
HSC22960
Mimulus nanus var. mephiticus
John Pratt
1970-7-11
76
Lassen
At base of Dyer Mtn lookout tower.
Comment
HSC63954
Mimulus nanus var. mephiticus
Teresa Prendusi
1980-7-1
Lassen
Champ's Flat
1707
Comment
POM297719
Mimulus nanus var. mephiticus
A. A. Heller, P. B. Kennedy
1907-7-1
8672
Lassen
Near Old Chat.
Comment
RSA715546
Mimulus nanus var. mephiticus
L. Ahart, John Dittes
2005-6-1
11869
Lassen
On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction.
1449
Comment
UC1561980
Mimulus nanus var. mephiticus
Barbara Ertter with Gary Schoolcraft
1987-6-16
7197
Lassen
saddle on e side Hot Springs Peak (on ne side of lake); Skeedaddle Mountains, Honey Lake
2194
Comment
JEPS88207
Mimulus pulsiferae
Vernon H. Oswald and Lowell Ahart
1996-6-24
7865
Lassen
Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake; Modoc Plateau, Montane Meadow in Yellow Pine Forest. On the W side of the meadow ca. 0.2 mi S of the cabins.
1633
Comment
RSA536397
Mimulus pygmaeus
Beth Corbin, Steve Klukkert
1991-6-11
623
Lassen
Harvey Valley, just NNE of Harvey Station.
1690
Comment
UC1736253
Mimulus suksdorfii
Dean W. Taylor
1992-5-7
12547
Lassen
Eagle Lake Region, Pine Creek, on Forest Road 33N07 ca. 0.8 mile S of Byrgess Flat,
1767
Comment
JEPS79150
Mimulus torreyi
L. R. Heckard with R. Bacigalupi
1980-6-12
5255
Lassen
ne Westwood (near golf course)
1554
Comment
UC1523779
Minuartia douglasii
Gary Schoolcraft
1981-6-9
440
Lassen
s Pittville
1249
Comment
CAS-BOT-BC384031
Mirabilis laevis var. villosa
M. Bourell
1997-5-31
5881
Lassen
Wendel Road 10.9 miles southeast of Highway 395
Comment
CAS-BOT-BC221974
Monardella odoratissima subsp. glauca
John Thomas Howell
1934-7-8
12487
Lassen
Spalding's, Eagle Lake
Comment
CHSC29936
Monardella odoratissima subsp. glauca
Robin L. Ondricek
1978-6-27
79
Lassen
Pine Creek, sw of the bridge which crosses the creek just upstream (sw) of the California Dept. of Fish and Game's fish milking station.
1566
Comment
GMDRC6951
Monardella odoratissima subsp. glauca
J. M. Andre, T. La Doux, Senna & Elias Andre
2013-7-12
31425
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
UCD18952
Monardella odoratissima subsp. glauca
Raymond D. Ratliff
1965-8-5
44
Lassen
Lassen National Forest, Harvey Valley Allot. (HV 20-14 'area').
1725
Comment
UCD125203
Monardella odoratissima subsp. glauca
John F. Sorenson
1986-7-5
s.n.
Lassen
9 miles southeast of Termo, Bailey Creek drainage; Bailey Creek above Bailey Reservoir.
Comment
CAS-BOT-BC213931
Monardella odoratissima subsp. pallida
Ralph K. Gierisch
1968-7-11
3354
Lassen
Highway 44, Lassen National Forest
1737
Comment
CAS-BOT-BC213933
Monardella odoratissima subsp. pallida
Clare B. Hardham
1969-8-28
17455
Lassen
Slope west of Janesville, Sierra Nevada
Comment
UC124967
Monardella odoratissima subsp. pallida
T. S. Brandegee
1892-6-30
Lassen
Susanville
Comment
UC506977
Monardella odoratissima subsp. pallida
George A. Fischer, Irwin H. Johnson
1933-7-12
F 225
Lassen
Lassen Forest
1722
Comment
CHSC91315
Monolepis nuttalliana
Lowell Ahart; John Dittes
2005-6-1
11897
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
UC1136461
Monolepis nuttalliana
A. Simontacchi
1940-6-4
810
Lassen
14.8 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad.
1783
Comment
UC1746003
Monolepis nuttalliana
Annetta M. Carter
1945-9-30
1721 a
Lassen
Sam Webb place near end of Eagle Lake.
1554
Comment
UCR244049
Monolepis pusilla
Jim Andre
1993-6-1
19719
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-BC444693
Montia chamissoi
Lassen 1927 G. S. Crew
1927-6-25
25
Lassen
Lassen National Forest. Norval Flat
2051
Comment
RSA74361
Montia chamissoi
Milo S. Baker
1952-5-23
12421 a
Lassen
Wet Spot, E of Chester, Hwy 36
Comment
CAS-BOT-BC444691
Montia chamissoi
George W. Gillett
1957-7-28
932
Lassen
Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail.
1905
Comment
CHSC68758
Montia linearis
Vernon H. Oswald; Lowell Ahart
1997-5-27
8497
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. Common in moist gravel on the flood plain of a small creek paralleling the road.
1546
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
RSA122965
Montia linearis
L. R. Short, Wm Gansberg
1936-6-8
s 392
Lassen
Burgess Spring Exp. Range
1744
Comment
UC1951065
Montia linearis
Debra Valov
2007-5-22
2007075
Lassen
Bieber, ca. 12 km east of Hwy 299 via County Rd A2.
Comment
UC1024657
Muhlenbergia andina
Leo Whitney
1934-7-24
2195
Lassen
near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp
1737
Comment
UC188911
Muhlenbergia asperifolia
Milo S. Baker
Lassen
Eagle Lake
Comment
CHSC60477
Muhlenbergia filiformis
Mary Ann Showers
1992-6-12
2519
Lassen
Lassen Volcanic National Park. Meadow, Butte Lake.
1859
Comment
UC1024665
Muhlenbergia filiformis
Leo Whitney
1934-8-15
2184
Lassen
near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp
1737
Comment
RSA129677
Muhlenbergia richardsonis
G. A. Fischer, Irwin Johnson
1933-7-12
F- 196
Lassen
Lassen National Forest; Grass Valley.
1695
Comment
RSA268996
Muhlenbergia richardsonis
J. R. Reeder
1972-7-24
5806
Lassen
Lassen National Park
1921
Comment
UC1132396
Muhlenbergia richardsonis
Robert W. Gardner
1939-7-10
G- 35
Lassen
Grass Valley Halls Flat Quadrangle
Comment
UC506980
Muhlenbergia richardsonis
George A. Fischer and Irwin H. Johnson
1933-7-12
F 224
Lassen
Stringer Mdw. Lassen National Forest
1722
Comment
NY492639
Myosurus apetalus
K. L. Chambers
1963-5-4
2026
Lassen
Highway 395, 10 miles north of junction with Alt. Highway 40 (later renumbered as Highway 70).
Comment
UC1608993
Myosurus apetalus
Vernon H. Oswald and Lowell Ahart
1993-5-12
5392
Lassen
0.6 mi e Shasta County Line (n side of Hwy 44, between Old Station and Poison Lake)
1645
Comment
OBI76991
Myosurus apetalus var. borealis
Anthony Baniaga
2011-6-10
325
Lassen
Lassen/Modoc County. On the S side of Hwy 299, ca. 1.2 mi E of Lassen County rd 428.
1295
Comment
CAS-BOT-BC83317
Myosurus minimus
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49217
Lassen
Sierra Nevada. Elysian Valley northwest of Janesville.
1325
Comment
UC9325
Myosurus minimus
M. S. Baker and Frank Nutting
1894-7-1
Lassen
w side Dixey Mts
Comment
CHSC5257
Myriophyllum sibiricum
A. Santos
1946-7-12
Lassen
Eagle Lake. Pine Creek Slough.
1584
Comment
JEPS103172
Myriophyllum sibiricum
G. Schoolcraft
1996-9-11
2565
Lassen
Willow Creek below petroglyphs and above dam
1310
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
SEINET10969184
Nama densa
Mary Susan Taylor
1974-1
Taylor 305
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
UC735057
Nama densa var. parviflora
Lincoln Constance
1946-7-3
3099
Lassen
7 mi n of Spaldings (northern edge of Eagle Lake); northern edge of Eagle Lake
1676
Comment
SEINET5624608
Nasturtium officinale
L. E. Ray
1967-1
29
Lassen
ca. 3.5 mi SE ELBS Upper Murrer Meadow
1524
Comment
CHSC45356
Navarretia breweri
Vernon Oswald
1986-5-28
2058
Lassen
Hwy 139 between Eagle Lake and Adin, 32.0 mi n of Susanville.
1630
Comment
CHSC60842
Navarretia breweri
Vernon H. Oswald; Lowell Ahart
1993-6-28
5592
Lassen
Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. On the bed of a vernal pool in a meadow.
1719
Comment
CHSC6207
Navarretia breweri
W. Vinyard
1946-6-12
Lassen
Eagle Lake. Willow Creek.
1463
Comment
CHSC64883
Navarretia breweri
Vernon H. Oswald; Lowell Ahart
1995-6-19
6885
Lassen
Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.9 mi e of Hwy. 395, on the down-slope approaching Mud Flat.
1353
Comment
CHSC89734
Navarretia breweri
L. P. Janeway
2004-6-26
8143
Lassen
High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18.
1714
Comment
HSC75910
Navarretia breweri
D. H. Norris, Thomas W. Nelson, S. Dowty
1971-6-22
19274
Lassen
Harvey Valley near Cone Springs
Comment
UC133863
Navarretia breweri
Frank Stephens
1894-7-10
Lassen
above Pete's Valley
1463
Comment
UC1537486
Navarretia breweri
Gordon H. True Jr.
1936-6-25
541
Lassen
e of Harvey Ranger Station; Harvey Valley
1706
Comment
SEINET11268213
Navarretia breweri
Vernon H. Oswald, Lowell Ahart
1993-6-28
5592
Lassen
Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.; 0
1719
Comment
CHSC14175
Navarretia divaricata
K. R. Stern; D. B. Joley, J. G. Geschke
1974-6-22
5806
Lassen
E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville.
Comment
CHSC6208
Navarretia divaricata
W. Vinyard
1946-6-12
Lassen
Eagle Lake. Willow Creek.
1371
Comment
CHSC99105
Navarretia intertexta
Lowell Ahart; John Dittes
2008-6-22
15028
Lassen
Along a small natural drainage, about 120 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber.
1262
Comment
JEPS121309
Navarretia intertexta subsp. intertexta
Lowell Ahart, John Dittes
2013-7-22
18869
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
CHSC23856
Navarretia intertexta subsp. propinqua
Glenda Foster
1975-7-12
101
Lassen
Along edges of Fall River Mills Road ca. 1 mile n of Highway 44.
Comment
CHSC23861
Navarretia intertexta subsp. propinqua
A. W. Harvilik
1967-7-7
38
Lassen
Collected on hwy. 139 ca. 6 mi from Susanville.
1463
Comment
CHSC34347
Navarretia intertexta subsp. propinqua
K. R. Stern
1974-6-26
5854
Lassen
Ditch bank beside Railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44.
Comment
CHSC58848
Navarretia intertexta subsp. propinqua
Vernon H. Oswald; Lowell Ahart
1992-7-16
5111
Lassen
Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. On the bed of the creek on the bed of the reservoir. Blue-flowered plants collected at Long Lake.
1691
Comment
JEPS114394
Navarretia intertexta subsp. propinqua
Lowell Ahart, John Dittes
2008-6-22
15031
Lassen
about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber
1262
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
UCD32676
Navarretia intertexta subsp. propinqua
Beecher Crampton
1954-7-6
2081
Lassen
Lassen County, 3 miles north of Madeline, along US highway 395.
Comment
JEPS69637
Navarretia leptalea subsp. leptalea
Brown and Wieslander
1922-8-20
86
Lassen
Martin Sprs. Eagle Lake
Comment
CHSC113072
Navarretia leucocephala subsp. minima
Lowell Ahart; John Dittes
2013-7-22
18852
Lassen
Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1267
Comment
JEPS127174
Navarretia leucocephala subsp. minima
Lowell Ahart, John Dittes
2016-7-15
21213
Lassen
Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
Comment
NY1012788
Navarretia leucocephala subsp. minima
N. H. Holmgren
1980-7-3
9470
Lassen
Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline.
1620
Comment
POM312617
Navarretia leucocephala subsp. minima
Malcolm A. Nobs, S. Galen Smith
1949-5-29
756
Lassen
Nubieber on Great Northern Railway, Highway 299
Comment
UC1137584
Navarretia leucocephala subsp. minima
A. Simontacchi
1940-6-15
872
Lassen
6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad.
1767
Comment
UC23714
Navarretia leucocephala subsp. minima
M. S. Baker and F. Nutting
1894-7-21
Lassen
Eagle Lake
Comment
UC909096
Navarretia leucocephala subsp. minima
G. L. Stebbins Jr.
1949-8-6
4003 a
Lassen
between Susanville and McArthur (edge of Feather Lake); Feather Lake
1676
Comment
RSA293374
Navarretia leucocephala subsp. minima
Reino Alava
1957-7-5
1143
Lassen
Along Highway 395, 10 miles N of Madeline.
Comment
SEINET2440301
Navarretia linearifolia subsp. linearifolia
Leigh A. Johnson
2006-7-2
06 -138
Lassen
Lassen Nat. Forest, Long Lake vicinity. Off Hwy 44 at mile marker 20.74 (just E of jct between 44 and county road A21). Along shore between trees and water's edge, particularly at point where spur from Hwy 44 connects with road next to lake.; 0
1736
Comment
POM74669
Navarretia sinistra
Marcus E. Jones
1897-6-26
10226
Lassen
Susanville, Perkin's Ranch.
1463
Comment
SEINET14160494
Navarretia sinistra
D. W. Taylor
2012-7-18
21281
Lassen
Cascade Ranges, Windmill Flat (9tributary Juniper Creek, Pit River watershed, 11 miles S of Adin), Letterbox Hill.
1707
Comment
UCSB30253
Nemacladus interior
Hardham, Clare
1961-6-16
Lassen
Gold Run Creek south of Susanville
Comment
SEINET10458443
Nemacladus rigidus
Rupert C. Barneby
1943-6-15
Barneby 5765
Lassen
Smoke Creek northeast of Viewland
1341
Comment
UC791038
Nemophila pedunculata
Calvin McMillan and Malcolm A. Nobs
1949-6-15
1539
Lassen
5 mi w Nubieber; w of Nubieber
Comment
CHSC65042
Neoholmgrenia andina
Vernon H. Oswald; Lowell Ahart
1995-7-5
6959
Lassen
Modoc Plateau. North of Honey Lake at Bull Flat on Smoke Creek Ranch Rd., 10.3 mi e of Hwy. 395. At roadside.
1432
Comment
CAS-BOT-BC349855
Nestotus stenophyllus
Alice Eastwood; John Thomas Howell
1940-6-15
8314
Lassen
Upper Willow Creek east of Hayden Hill
Comment
CHSC67175
Nestotus stenophyllus
James D. Jokerst
1991-5-29
3305
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
CHSC65361
Nicotiana attenuata
Vernon H. Oswald; Lowell Ahart
1995-8-14
7182
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville.
1645
Comment
CDA41135
Nicotiana attenuata
T. C. Fuller
1962-8-28
9477
Lassen
Secret Valley, Highway 395, 3.3 miles north of road to Karlo.
0
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
UC1609113
Nothocalais troximoides
Vernon H. Oswald and Lowell Ahart
1993-6-14
5504
Lassen
Champs Flat Rd. (Lassen A21/105, Forest 32N02) 1.8 mi n Hwy 44 (between Poison Lake and Susanville)
1749
Comment
CAS-BOT-BC349916
Nothocalais troximoides
G. L. Stebbins, Jr.; J. A. Jenkins
1937-7-10
2309
Lassen
Crest of range head of Stony Ridge, west of Milford
1930
Comment
RSA0009448
Nuphar lutea subsp. polysepala
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
CAS-BOT-BC171461
Oenothera boothii subsp. alyssoides
Louella Bass
1982-6-20
s.n.
Lassen
Cemetery gate, McKissick
Comment
CHSC12954
Oenothera deltoides subsp. piperi
K. R. Stern; D. B. Joley, J. G. Geschke
1974-6-22
5803
Lassen
Field on w side of Janesville Rd., ca. 0.1 mi w of turnoff from Hwy. 395, ca. 11 mi se of Susanville.
Comment
UC1122216
Oenothera deltoides subsp. piperi
E. Sawyer
1935-6-27
231
Lassen
Long Valley Sierraville Quadrangle
Comment
SEINET5345714
Oenothera deltoides var. piperi
P. B. Kennedy
1901-6-10
s.n.
Lassen
R.R. Station, Constantia
Comment
CHSC29904
Onobrychis viciifolia
Robin L. Ondricek
1978-6-6
33
Lassen
1.2 mi from Hwy 139 on the road to Eagle Lake Field Station.
1499
Comment
CAS-BOT-BC349945
Onopordum acanthium
O. Havens
1963-8-9
s.n.
Lassen
P. S. Hall ranch, Doyle
Comment
UC2027324
Oreostemma alpigenum var. andersonii
Anthony Baniaga
2011-8-9
491
Lassen
Lassen National Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mountain quadrangle
Comment
CHSC29921
Orobanche corymbosa
Robin L. Ondricek
1978-6-27
76
Lassen
At Brockman Flat Lava Beds.
1584
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
CAS-BOT-BC500324
Orobanche uniflora subsp. occidentalis
H. C. Cantelow
1941-5-22
s.n.
Lassen
Fredonyer Pass, 18.5 mi W of Susnville, Hwy 36
Comment
HSC24668
Orobanche vallicola
John Pratt
1970-7-5
64
Lassen
1250
Comment
RSA516524
Orthocarpus campestris
Helen-Mar Wheeler
1952-7-11
s.n.
Lassen
South of Madeline.
Comment
POM44324
Orthocarpus cuspidatus subsp. copelandii
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
CHSC23505
Orthocarpus cuspidatus subsp. cryptanthus
Wayne O. Baum
1970-7-7
70 -2
Lassen
Top of Gallatin Peak.
2117
Comment
CHSC37345
Orthocarpus cuspidatus subsp. cryptanthus
J. D. Prouty
1978-6-28
5
Lassen
Lower Dry L., SE of Eagle L.
1645
Comment
UC1537445
Orthocarpus cuspidatus subsp. cryptanthus
Gordon H. True Jr.
1936-6-25
526
Lassen
e Harvey Ranger Station (Harvey Valley); Harvey Valley
1706
Comment
SEINET12329637
Orthocarpus hispidus
N. H. Holmgren, Holmgren, P. K.
1980-1
9483
Lassen
US 395, 7.4 km S of Ravendale
1620
Comment
RSA39737
Orthocarpus lacerus
Philip A. Munz
1947-5-20
11890
Lassen
Milford.
1265
Comment
JEPS98391
Oryzopsis exigua
Vernon H. Oswald, G. Schoolcraft, M. Dolan, and B. Corbin
2000-6-18
9929
Lassen
E of Ravendale (E-NE of the lookout on Observation Peak)
2377
Comment
NY404414
Oxytheca dendroidea
E. K. Balls
1952-10-10
18140
Lassen
5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas
1280.2
Comment
CAS-BOT-BC413245
Oxytheca dendroidea subsp. dendroidea
Robert F. Hoover
1940-10-1
4656
Lassen
Janesville
Comment
CHSC63381
Packera cana
Vernon H. Oswald; Beth Corbin, Michael Dolan
1994-6-18
6312
Lassen
Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline.
1859
Comment
CAS-BOT-BC316860
Packera eurycephala var. eurycephala
Alice Eastwood; John Thomas Howell
1940-6-11
7968
Lassen
Eastern Fall River Valley
Comment
CHSC93246
Packera streptanthifolia
John Dittes; Scott Chamberlain
2004-6-28
1011
Lassen
Modoc Plateau; Long Valley; ca. 2.0 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow.
1448
Comment
UC1126133
Paeonia brownii
A. Simontacchi
1940-5-13
698
Lassen
4.6 mi sw B.M. 7310; Lassen National Forest, Halls Flat Quadrangle, Blacks Mtn.
Comment
UC485769
Paeonia brownii
H. E. and S. T. Parks
June, 1928
223
Lassen
Drakesbad Lassen National Park
Comment
CDA24372
Paeonia brownii
T. C. Fuller
1962-6-13
8997 d
Lassen
0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood.
0
Comment
CAS-BOT-BC253718
Panicum capillare
John Thomas Howell
1973-7-10
49795
Lassen
In city park, Susanville
1295
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
UC1131606
Panicum capillare
H. S. Yates
1936-8-11
6073
Lassen
Baxter Creek Susanville Quad., Baxter Creek
Comment
CHSC91320
Pectocarya penicillata
Lowell Ahart; John Dittes
2005-6-1
11907
Lassen
Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
Comment
JEPS68204
Pectocarya penicillata
W. L. Jepson
1918-8-2
7770
Lassen
Beckwith Pass
1463
Comment
CHSC71077
Pectocarya setosa
Vernon H. Oswald; Lowell Ahart
1998-5-22
9098
Lassen
Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle.
1316
Comment
HSC31343
Pectocarya setosa
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19279
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
SD6612
Pedicularis attollens
Mrs. R. M. Austin
1882-8-9
Lassen
Kings Valley
Comment
CAS-BOT-BC7094
Pedicularis attollens subsp. protogyna
Francis Whittier Pennell
1940-6-10
25771
Lassen
Route 36 road to Coppervale R.S., E of Westwood
Comment
UCR267420
Pedicularis centranthera
Jim Andre, Glenn L. Clifton
1993-6-14
30003
Lassen
northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville
1646
Comment
HSC20935
Pedicularis groenlandica
H. E. Parks, S. T. Parks
Jun 1928
251
Lassen
Lassen National Park, Drakesbad
1677
Comment
UC41744
Pedicularis groenlandica
M. S. Baker and Frank Nutting
1894-7-12
Lassen
Comment
SEINET10549211
Pedicularis semibarbata
Mary Merello
1993-6-28
Merello 754
Lassen
Lassen National Forest. Along Forest Service Road 33N02 to Harvey Mountain Lookout and Harvey Valley. Open pine scrub and sagebrush woodland.
1740
Comment
SEINET3836472
Pedicularis semibarbata
Marcus E. Jones
1897-6-28
Lassen
Diamond Mt. Susanville, Perkin's Ranch
1829
Comment
CAS-BOT-BC69367
Pellaea breweri
T. S. Brandegee
1892-6-29
s.n.
Lassen
unspecified
Comment
JEPS8094
Penstemon davidsonii var. davidsonii
W. L. Jepson
1910-6-11
4117
Lassen
Cinder Cone
2133
Comment
CHSC23498
Penstemon gracilentus
Wayne O. Baum
1971-7-7
71 -85
Lassen
E. slope of Gallatin Peak.
1981
Comment
CHSC5912
Penstemon gracilentus
R. Gein
1946-6-24
Lassen
McCoy Flat. Eagle Lake.
1645
Comment
CHSC80282
Penstemon gracilentus
Jeanne Boze
1981-6-11
103
Lassen
About 5 m from road, along Horse Lake Road, 5.5 mi from Hwy 139.
1676
Comment
NY600715
Penstemon gracilentus
B. J. Ertter
1988-7-25
7866
Lassen
Ridge of Diamond Mountains ca. 1.5 miles east of Diamond Peak, ca. 10 airmiles due south of Susanville.
2255.5
Comment
SEINET10917288
Penstemon gracilentus
Karen M. Meyer, Andrew Townesmith
2007-7-23
Meyer 157
Lassen
Lassen National Forest. 3.9 miles SW on 32N10 off Hwy. 44. (Turn at rest area).
1900
Comment
UC1137680
Penstemon gracilentus
George A. Fischer, Irwin H. Johnson
1933-7-14
F 254
Lassen
Lassen National Forest
1783
Comment
POM43270
Penstemon miser
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch.
2226
Comment
HSC22984
Penstemon neotericus
John Pratt
1970-7-11
69
Lassen
Dyer Mtn.
1829
Comment
CAS-BOT-BC239221
Penstemon newberryi var. berryi
Clare B. Hardham
1969-8-28
17449
Lassen
West of Janesville
Comment
CAS-BOT-BC383112
Penstemon newberryi var. newberryi
Andrew Townesmith; Karen M. Meyer
2007-7-22
843
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
1980
Comment
NY640119
Penstemon procerus var. procerus
N. H. Holmgren
1978-6-11
8914
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
CHSC4938
Penstemon roezlii
W. Lessig
1967-6-24
5
Lassen
3 mi se Eagle Lake Biology Station, above Murrer's Meadow.
1524
Comment
NY650104
Penstemon roezlii
J. T. Howell
1977-6-22
52402
Lassen
North end of Eagle Lake
1585.0
Comment
NY650137
Penstemon roezlii
A. A. Heller
1938-6-23
15195
Lassen
East of Fredonyer Pass
1615.4
Comment
UC1924562
Penstemon roezlii
Debra Valov
2006-5-29
2006034
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1294
Comment
SEINET226061
Penstemon roezlii
M. Lavin
1982-5-30
4122
Lassen
E of Hallelujah Junction 22 air mi NW of Reno W side of Petersen Mtns
1676
Comment
CAS-BOT-BC239511
Penstemon rydbergii var. oreocharis
L. Constance
1938-6-10
2322
Lassen
1.5 miles northeast of Robber Creek, near Westwood
1219
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
JEPS118278
Penstemon rydbergii var. oreocharis
Lowell Ahart, John Dittes
2011-6-20
17502
Lassen
Meadow, about 40 yards west of the stream, about 50 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
POM252930
Penstemon rydbergii var. oreocharis
A. A. Heller
1938-6-23
15193
Lassen
About 3 miles east of Westwood.
Comment
SBBG7130
Penstemon rydbergii var. oreocharis
H. and M. Dearing
1938-7-1
2239 c
Lassen
12 mi W of Susanville
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
UC70352
Penstemon rydbergii var. oreocharis
Milo S. Baker
1890-1
Lassen
Milford
Comment
CHSC13894
Penstemon speciosus
L. E. Ray
1967-6-24
33
Lassen
Collected ca. 3 mi. se ELBS, above Upper Murrer Meadow.
1524
Comment
CHSC5916
Penstemon speciosus
J. B. Kimsey
1946-6-10
Lassen
Eagle Lake.
1554
Comment
JEPS95972
Penstemon speciosus
Vernon H. Oswald and L. Ahart
1999-6-9
9747
Lassen
Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate
1353
Comment
NY660820
Penstemon speciosus
H. D. D. Ripley
1943-6-13
5672
Lassen
South of Constantia
1463.0
Comment
RSA401877
Penstemon speciosus
Francis W. Pennell
1940-7-23
26254
Lassen
Route 395, 2 mi north of jct with Route 24, northeast of Plumas.
1524
Comment
SEINET5329894
Penstemon speciosus
F. B. Headley
1915-5-28
3
Lassen
Honey Lake
Comment
CAS-BOT-BC239661
Penstemon sudans
Francis W. Pennell
1940-6-9
25768
Lassen
Route 36, west of Susanville
1371
Comment
CAS-BOT-BC239663
Penstemon sudans
Francis W. Pennell
1940-7-23
26253
Lassen
Route 36, west of Susanville
1371
Comment
CAS-BOT-BC243412
Penstemon sudans
David D. Keck; J. Clausen
1935-6-25
3756
Lassen
Susanville
Comment
JEPS109636
Penstemon sudans
Dean W. Taylor
2002-6-21
18167
Lassen
Highway 139 about 4 miles North from Lassen College (ca. 5 miles N of Susanville)
1478
Comment
NY661801
Penstemon sudans
D. D. Keck
1930-7-23
948
Lassen
Susanville
1280.2
Comment
UC1583939
Penstemon sudans
G. Schoolcraft
1990-8-6
2121
Lassen
along Bizz Johnson Trail w Susanville; along Bizz Johnson Trail w of Susanville
1310
Comment
UC886952
Penstemon sudans
A. A. Heller
1938-6-22
15194
Lassen
on Highway #36 on a stony slope e Fredonyer Pass; e of Fredonyer Pass
1645
Comment
UC887362
Penstemon sudans
Lewis S. Rose
1940-6-15
40594
Lassen
10 mi n Susanville (Round Valley); , n of Susanville
1524
Comment
SEINET5323638
Penstemon sudans
G. Schoolcraft
1998-7-8
2752
Lassen
Along Hwy 139 about 3 mi. n. os Susanville.
1402
Comment
CHSC91292
Perideridia bolanderi
Lowell Ahart; John Dittes
2005-6-1
11916
Lassen
Along a small wash, 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.
1425
Comment
JEPS107969
Perideridia bolanderi
Lowell Ahart, John Dittes
2005-6-1
11916
Lassen
Along a small wash, 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
1425
Comment
CHSC29870
Perideridia oregana
Robin L. Ondricek
1978-7-15
103
Lassen
.6 mi e of jct. with main road to ELFS on road to Murrers Upper Meadow.
1554
Comment
UC1143014
Perideridia oregana
August L. Hormay
1934-7-2
Lassen
Headquarters Lassen National Forest (1/2 mi n of Black's Mtn.)
1706
Comment
CHSC25307
Phacelia adenophora
Pauleen Broyles
1977-6-1
154
Lassen
Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 cm ne of Herlong.
1660
Comment
CHSC7682
Phacelia adenophora
Beverley J. Wise
1969-5-3
49
Lassen
6.1 mi. junction with Hwy 395 on Las. Co. Rd. 338.
1615
Comment
JEPS17754
Phacelia adenophora
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5429
Lassen
along Smoke Creek Ranch rd 8 mi e U.S. Hwy. 395 (se part of valley); Secret Valley
1402
Comment
RSA17669
Phacelia adenophora
Elmer I. Applegate
1934-5-4
8912
Lassen
South end of Secret Valley
Comment
RSA38630
Phacelia adenophora
P. A. Munz
1947-5-19
11874
Lassen
19 miles south of Ravendale.
1341
Comment
UC1603542
Phacelia adenophora
Arnold Tiem, Margaret Williams, and Jan Nachlinger
1988-6-2
11701
Lassen
on hwy 395 3.4 road mi n Wendel road (from Susanville to Alturas, s side of mt., w of hwy); Shaffer Mt.
1386
Comment
UC726890
Phacelia adenophora
A. A. Heller
1938-6-23
15210
Lassen
along Hwy 395 about midway between Mapes and Secret Valley
1371
Comment
UC735114
Phacelia adenophora
Lincoln Constance
1946-7-3
3100
Lassen
16 mi w Termo; Grasshopper Valley
1676
Comment
NY1052542
Phacelia bicolor
W. W. Eggleston
1911-5-29
6742
Lassen
Vicinity of Doyle Station
1290
Comment
JEPS94704
Phacelia bicolor var. bicolor
Vernon H. Oswald and Lowell Ahart
1998-5-22
9132
Lassen
6 mi ne of Doyle (3.5 mi e of Fort Sage Road, near the summit of the dirt road in the Fort Sage Mountains); Fort Sage Mountains
1737
Comment
SD61076
Phacelia hastata
Darley F. Howe
1964-8-1
3913
Lassen
Modoc Natl. Forest. 4.8 mi. on Ridge above Harvey Creek.
2133
Comment
CDA40427
Phacelia hastata subsp. compacta
L. Ahart, J. Dittes
2005-6-2
11950
Lassen
Along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, Long Valley, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction.
Comment
JEPS107796
Phacelia hastata subsp. compacta
Lowell Ahart, John Dittes
2005-6-2
11950
Lassen
Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction
1498
Comment
RSA716141
Phacelia hastata subsp. compacta
L. Ahart, John Dittes
2005-6-2
11950
Lassen
Along a poor dirt road, about one mile northeast of the Anderson Ranch home, Long Valley, about five and a half miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction.
1499
Comment
CHSC14192
Phacelia hastata subsp. hastata
M. S. Taylor
1974-6-28
274
Lassen
Scattered on w shore of Pelican Point in Eagle Lake, ca. 13 mi nw of Susanville.
1524
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
NY1057241
Phacelia heterophylla
N. H. Holmgren
1980-7-4
9503
Lassen
Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale
1890
Comment
POM203779
Phacelia heterophylla subsp. virgata
J. T. Howell
1934-7-10
12553
Lassen
Black s Mt.
Comment
CHSC28594
Phacelia humilis
M. S. Taylor
1974-7-9
266
Lassen
Scattered ca 3 ft e side of Whitehead Rd, ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville.
Comment
NY1057842
Phacelia humilis
P. A. Munz
1947-5-20
11885
Lassen
Laufman Forestry Public Camp above Milford
1524
Comment
SDSU6647
Phacelia humilis
D. F. Howe
1964-7-1
3914
Lassen
4.8 miles from Harvey Creek on ridge road, warner Mts. Modoc National Forest.
2134
Comment
JEPS95000
Phacelia humilis var. humilis
Vernon Oswald and Lowell Ahart
1997-6-24
8620
Lassen
2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43
2036
Comment
CHSC5263
Phacelia imbricata
1944-7-6
Lassen
Eagle Lake. Harvey Valley.
1694
Comment
POM266183
Phacelia inundata
J. T. Howell
1934-7-8
s.n.
Lassen
Spaldings Resort; Eagle Lake
Comment
CHSC5265
Phacelia linearis
J. Wolf
1946-6-20
Lassen
Eagle Lake. Grasshopper Valley.
1624
Comment
JEPS94481
Phacelia linearis
Vernon H. Oswald and Lowell Ahart
1997-5-27
8526
Lassen
4.9 mi ne of Highway 139 (Coyote Flat on Forest Route 38N04); Coyote Flat on Forest Route 38N04
1813
Comment
RSA428037
Phacelia linearis
Rockwell
1925-7-1
s.n.
Lassen
Eagle Lake
Comment
NY1056434
Phacelia lutea var. glandulifera
N. H. Holmgren
1980-7-3
9473
Lassen
Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline
1620
Comment
UC107462
Phacelia racemosa
Mrs. R. M. Austin
1879-1
Lassen
Eagle Lake
Comment
CHSC29886
Phacelia ramosissima var. eremophila
Robin L. Ondricek
1978-8-2
109
Lassen
In moss covered basalt on top of the ridge se of ELFS.
1609
Comment
SEINET7356303
Phacelia ramosissima var. eremophila
Noel H. Holmgren, Patricia K. Holmgren
1980-7-4
9508
Lassen
Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0
1890
Comment
RSA722687
Phacelia ramosissima var. ramosissima
R. R. Halse
2006-8-3
6990
Lassen
Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely.
1860
Comment
CAS-BOT-BC159229
Phacelia ramosissima var. subglabra
John Thomas Howell
1934-6-30
11873
Lassen
Janesville
Comment
NY1056748
Phacelia tetramera
A. Tiehm
1986-5-12
10349
Lassen
1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek.
1341.1
Comment
RSA370317
Phacelia tetramera
Arnold Tiehm, Margaret J. Williams, Gary Schoolcraft
1986-5-12
10349
Lassen
1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek.
1341
Comment
NY1057983
Phacelia thermalis
H. D. D. Ripley
1943-6-15
5761
Lassen
Along Smoke Creek northeast of Viewland
1311
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
UC1567390
Phacelia thermalis
G. Schoolcraft
1989-5-3
1868
Lassen
s Karlo; North end of Secret Valley
1341
Comment
POM266079
Phacelia thermalis
C. L. Hitchcock
1940-5-26
6641
Lassen
Floodplain of Pitt River, one mile west of Bieber.
Comment
RSA324193
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.
1387
Comment
UC1037092
Phleum pratense
Leo Whitney
1933-7-1
2214
Lassen
ca 15 mi w Eagle Lake (Crater Mountain); Lassen National Forest, w of Eagle Lake, Crater Mountain
2225
Comment
JEPS118284
Phlox douglasii
Lowell Ahart, John Dittes
2011-6-20
17506
Lassen
About 40 yards north of the dirt road, 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
RSA0035915
Phlox gracilis
Lowell A. Ahart, John Dittes
2008-6-20
14929
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
CHSC23546
Phlox hoodii subsp. canescens
Wayne O. Baum
1971-6-28
71 -35
Lassen
S. slope of Gallatin Peak.
2042
Comment
OBI77067
Phlox hoodii subsp. canescens
Anthony Baniaga
2011-6-7
311
Lassen
Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE
1747
Comment
RSA647574
Phlox longifolia
Marion P. Harthill
1971-6-21
227
Lassen
Ravendale
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
CHSC36495
Phlox stansburyi
Theresa Costa
1982-6-4
31
Lassen
Ca. .5 mi e of Murrers Upper Meadow, rd along e edge.
Comment
CHSC64803
Phlox stansburyi
Vernon H. Oswald
1995-5-31
6802
Lassen
Modoc Plateau. Smoke Creek Rance Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale.
1383
Comment
HSC17069
Phlox stansburyi
Fred J. Kindel
1955-6-6
Lassen
Doyle
Comment
UC932052
Phlox stansburyi
Verne Grant and Alva Grant
1947-5-5
7979
Lassen
n of Honey Lake Valley
Comment
CHSC7709
Phoenicaulis cheiranthoides
Beverley J. Wise
1969-3-4
34
Lassen
1.5 mi. north of Susanville on Hwy 139. 50 feet w of rd.
1341
Comment
RSA121476
Phoenicaulis cheiranthoides
L. R. Short
1936-4-28
S 335
Lassen
Burgess Spring Experimental Range. Lassen Forest.
1738
Comment
UC1126723
Phoenicaulis cheiranthoides
A. Simontacchi
1940-5-17
753
Lassen
1.1 mi ssw of Dixie Spring (Lassen National Forest); Lassen National Forest
1699
Comment
UC1136913
Phoenicaulis cheiranthoides
L. R. Short
1936-4-28
S 335
Lassen
Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range
1737
Comment
UC1748284
Phoradendron densum
L. P. Janeway, B. Castro, and Loren Gehrung
1999-10-10
6595 A
Lassen
at Cypress Trailhead into Thousand Lakes Wilderness Area, near Eiler Creek between Fraener Peak and Horse Heaven Buttes High Cascade Range
1639
Comment
UCD89832
Phragmites australis
John Thomas Howell
1975-7-23
51415
Lassen
Long Valley Creek bridge on Hwy. 395. Southeast of Constantia.
Comment
UC21954
Phyllodoce breweri
M. S. Baker and Frank Nutting
1894-7-20
Lassen
Silver Lake
Comment
RSA46500
Pinus jeffreyi
Doris K. Kildale
1926-9-11
2797
Lassen
[Writing illegible] Susanville
Comment
SEINET12429009
Pinus monophylla var. californiarum
D. Charlet, P. Herman
1995-3-6
2192
Lassen
Diamond Mountains, 10 kn ESE of Adams Peak; W side Long Valley, NW of Petersen Mtn. on little ridgetop visible from US 395, below railroad above windmill;
1408
Comment
NY951542
Pinus ponderosa var. ponderosa
D. H. Goldman
2004-11-6
2941
Lassen
Along the N side of Forest Road 32N08, just N of Pine Creel Valley and about 1.8 miles E of the intersection with Rt. 44. Crater Lake Mountain, Lassen National Forest
1725
Comment
SEINET3874938
Pinus washoensis
David A. Charlet
1994-7-6
1924
Lassen
Madelin Mesa foothills above Madeline plains.; 0
1689
Comment
RSA0011556
Plagiobothrys
R. F. Thorne, Larry E. DeBuhr
1975-8-22
46996
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line
1616
Comment
SJSU8053
Plagiobothrys cognatus
R. L. Fisher
1958-6-16
Lassen
6 mi S of Madeline
Comment
CHSC93699
Plagiobothrys cusickii
Lowell Ahart; John Dittes
2005-6-2
11954
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
CHSC93708
Plagiobothrys cusickii
Lowell Ahart; John Dittes
2005-6-1
11906
Lassen
Depression on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
Comment
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
CAS-BOT-BC224975
Plagiobothrys hispidulus
John Thomas Howell; Gordon H. True; Wayne Dakan
1974-7-30
50648
Lassen
S and SE of Diamond Mountain
2286
Comment
CAS-BOT-BC224978
Plagiobothrys hispidulus
Philip A. Munz
1947-5-20
11891
Lassen
Milford
1264
Comment
CHSC113067
Plagiobothrys hispidulus
Lowell Ahart; John Dittes
2013-7-22
18854
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
JEPS109638
Plagiobothrys hispidulus
Dean W. Taylor
2002-6-21
18173
Lassen
Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley
1524
Comment
UC1137645
Plagiobothrys hispidulus
A. Simontacchi
1940-5-21
757
Lassen
4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest
Comment
UC773949
Plagiobothrys hispidulus
L. R. Short and Wm. Gansberg
1936-6-8
S- 389
Lassen
Burgess Spring Experiment Range Lassen <National> Forest
1743
Comment
SD43490
Plagiobothrys hispidulus
Philip A. Munz
1947-5-20
11891
Lassen
Silty drying roadside pool, Milford.
1264
Comment
CHSC60727
Plagiobothrys kingii var. harknessii
Vernon H. Oswald; Lowell Ahart
1993-6-14
5538
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 dunes on the N side of the road.
1566
Comment
CHSC64768
Plagiobothrys leptocladus
Vernon H. Oswald
1995-5-24
6780
Lassen
Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad.
1219
Comment
UC1483869
Plagiobothrys leptocladus
G. Schoolcraft
1980-5-7
223
Lassen
n shore Honey Lake Island; n shore Honey Lake Island
1219
Comment
UC614658
Plagiobothrys leptocladus
L. Constance
1938-6-11
2330
Lassen
slightly alkaline overflow of the Susan River at Litchfield; Susan River, Litchfield
1219
Comment
UC1191065
Plagiobothrys mollis
Robert Ornduff
1959-7-18
5060
Lassen
1 mi e Madeline (on road from Madeline to the Patterson Ranger Station); Modoc National Forest
Comment
UC1533150
Plagiobothrys mollis
G. Schoolcraft
1986-7-28
1665
Lassen
w Ash Valley (along edge of Moll Reservoir); edge Moll Reservoir
1606
Comment
CAS-BOT-BC228466
Plagiobothrys mollis
Clarence R. Quick
1962-6-17
62 25 B
Lassen
Swains Hole, S of Blacks Mountain Experimental Station
1554
Comment
JEPS114692
Plagiobothrys mollis var. mollis
Lowell Ahart, John Dittes
2008-6-20
14921
Lassen
In 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
RSA0035395
Plagiobothrys mollis var. mollis
Lowell Ahart, John Dittes
2008-6-20
14921
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
RSA715627
Plagiobothrys scouleri var. cusickii
L. Ahart, John Dittes
2005-6-1
11906
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
POM71640
Plagiobothrys scouleri var. hispidulus
Marcus E. Jones
1897-6-19
s.n.
Lassen
Chat
1524
Comment
RSA39738
Plagiobothrys scouleri var. hispidulus
P. A. Munz
1947-5-20
11891
Lassen
Milford.
1265
Comment
CHSC117287
Plagiobothrys stipitatus var. micranthus
Lowell Ahart; John Dittes
2016-7-15
21217
Lassen
About 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley.
1261
Comment
CHSC71079
Plagiobothrys tenellus
Vernon H. Oswald; Lowell Ahart
1998-5-22
9093
Lassen
Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford.
1255
Comment
UC101433
Plagiobothrys tenellus
Marcus E. Jones, A. M.
1897-6-18
7141
Lassen
Chat
1524
Comment
SEINET10972868
Plagiobothrys tenellus
David B. Dunn, Billy Joe Cox
1971-6-2
Dunn 17760
Lassen
Approx. 12 mi S of Adin on CA Hwy 139.
1372
Comment
JEPS103179
Plantago lanceolata
G. Schoolcraft
2000-6-5
2897
Lassen
Hwy 395 and Johnstonville Road near Susanville Airport
1310
Comment
CHSC12462
Platanthera leucostachys
Robert W. Severin
1969-6-26
21
Lassen
7.2 mi along road from E. L. B. S. to Galatin Beach. 3 mi. s of E. L. B. S.
1645
Comment
CHSC30564
Platanthera leucostachys
Sori H. Shad
1970-6-19
21
Lassen
Above and east of Galatin Beach.
1524
Comment
CHSC6278
Platanthera leucostachys
M. West
1946-7-7
Lassen
Butte Creek.
Comment
SD7498
Platanthera sparsiflora
Mrs. R. M. Austin
1880-1
Lassen
No further locality information given on label on specimen sheet.
Comment
CHSC66852
Pleiacanthus spinosus
Vernon H. Oswald
1996-10-3
8297
Lassen
Modoc Plateau. North of Susanville on Horse Lake Road (Lassen 546) 4.2 mi W of Hwy. 395. On the edge of the road.
1645
Comment
RSA273386
Poa
J. P. Smith, J. O. Sawyer
1971-5-22
4655
Lassen
4 miles west of Susanville on State Route 44.
Comment Read comments May 9 2012
UC1031352
Poa
Leo Whitney
1935-6-26
3367
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UCD92172
Poa
A. A. Beetle
1941-6-28
2815
Lassen
6 miles south of Ravendale, lower slopes of Observation Peak.
Comment
CAS-BOT-BC254945
Poa bulbosa
Barbara Shervanick
1974-5-9
1298
Lassen
Highway 89 through Lassen National Forest, about 0.25 mile N of Bridge Campground
1371
Comment
HSC10643
Poa bulbosa
D. E. Anderson
1969-7-5
5000
Lassen
Freedonyer Pass, 15 mi. W of Susanville
1752
Comment
RSA295427
Poa bulbosa
J. R. Reeder, C. G. Reeder
1981-5-20
7349
Lassen
3.5 km NNW of Janesville. Transition above Long Valley.
1250
Comment
UCD54537
Poa bulbosa
Ellen Dean; Petra Unger, Dawn Cunningham
2005-10-10
2722
Lassen
E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area.
1247
Comment
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
RSA300130
Poa compressa
J. T. Howell
1974-7-10
50553
Lassen
Elysian Valley; Sierra Nevada
1326
Comment
UCD90920
Poa cusickii
Leo Whitney
1935-6-19
3265
Lassen
Camp 10, Fruit Grower's Supply Company, Lassen National Forest.
Comment
JEPS70635
Poa cusickii subsp. cusickii
G. S. Crew and C. S. Robinson
1927-7-15
61
Lassen
sw Lassen Co. Clover Valley; Lassen Forest
1767
Comment
UC1024815
Poa cusickii subsp. cusickii
Leo Whitney
1935-6-19
3264
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
1722
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
CDA2366
Poa pratensis
A. A. Beetle
1941-6-28
2797
Lassen
10 miles west of Chester.
Comment
CHSC61599
Poa pratensis
Arthur C. Barrett
1915-6-3
18
Lassen
Plumas National Forest. Laufman Ranger Station. Meadow.
1463
Comment
SEINET7850259
Poa pratensis
B. L. Wilson, D. Lytjen, N. Otting
2005-7-29
11508
Lassen
Blue Door Flat, 7 or 8 mi. E of Highway 295, on county road 510.
1774
Comment
UC1024691
Poa pratensis subsp. pratensis
Leo Whitney
1933-8-2
2154
Lassen
ca 8 mi nw Eagle Lake (Slate Creek); Lassen Nat'l Forest
1920
Comment
CAS-BOT-BC255021
Poa secunda
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49521
Lassen
Elysian Valley, W of Janesville
1325
Comment
POM264256
Poa secunda
A. A. Beetle
1941-6-28
2794
Lassen
10 mi west of Chester, Rte.36
Comment
POM267993
Poa secunda
D. D. Keck
1944-7-8
5456
Lassen
5 miles east of Westwood, on road to Fredonyer Pass.
1585
Comment
RSA647530
Poa secunda
Marion P. Harthill
1972-6-17
820
Lassen
Madeline.
1677
Comment
SEINET175720
Poa secunda
Marcus E. Jones
1897-6-25
Lassen
Susanville
1341
Comment
UCD90323
Poa secunda
A. A. Beetle; G. L. Stebbins Jr.
1942-5-29
3367
Lassen
5.2 miles E of Bieber, Big Valley.
Comment
CAS-BOT-BC236254
Poa secunda subsp. juncifolia
David D. Keck
1944-7-8
5447
Lassen
2 miles E of Westwood, in meadow leading down to Mountain Meadows Reservoir
1524
Comment
CAS-BOT-BC236256
Poa secunda subsp. juncifolia
David D. Keck
1944-7-8
5449
Lassen
1.5 miles W of Susanville, on rim of plateau overlooking Susan River Canyon
1341
Comment
CHSC33318
Poa secunda subsp. juncifolia
P. Reynolds
1979-7-4
18
Lassen
3 mi. NE of Wendel, Wendel Canyon in the Skedaddle Mtn. Range.
1371
Comment
JEPS123838
Poa secunda subsp. juncifolia
Lowell Ahart, John Dittes
2015-7-14
20331
Lassen
About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment
SJSU15450
Poa secunda subsp. juncifolia
John Rawlings, Sara Timby
2014-6-15
1265
Lassen
In and around BLM campground at north end of Eagle Lake.
1580
Comment Read comments Feb 18 2015
UC1024831
Poa secunda subsp. juncifolia
Leo Whitney
1935-6-12
3229
Lassen
Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest
Comment
UC1024949
Poa secunda subsp. juncifolia
Leo Whitney
1935-6-27
3317
Lassen
ca 13 mi w of n end Eagle Lake; Squaw Valley
Comment
UC1132872
Poa secunda subsp. juncifolia
A. Simontacchi
1940-5-13
704
Lassen
2.2 mi n of B. M. 6680 on Cone Mt; Lassen Nat'l Forest, Halls Flat Quadrangle
Comment
UC1153860
Poa secunda subsp. juncifolia
Beecher Crampton
1954-7-5
2048
Lassen
4.5 mi w Susanville
Comment
UC699670
Poa secunda subsp. juncifolia
Gus Hormay
1944-7-2
Lassen
Halls Flat
Comment
UC718011
Poa secunda subsp. juncifolia
David D. Keck
1944-7-8
5447
Lassen
2 mi w Westwood (meadow leading to Mountain Meadows Reservoir); Sierra Nevada
1524
Comment
UCD92148
Poa secunda subsp. juncifolia
Collector Unknown
1935-6-27
s.n.
Lassen
Squaw Valley.
Comment
SEINET7854865
Poa secunda subsp. juncifolia
G. Schoolcraft
1995-5-22
2489
Lassen
East of Skedaddle Ranch.
1554
Comment
CAS-BOT-BC236182
Poa secunda subsp. secunda
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49188
Lassen
Elysian Valley NW of Janesville
1325
Comment
HSC10738
Poa secunda subsp. secunda
R. S. White
1965-5-15
74
Lassen
10 mi. W of Susanville on Hwy. 36
Comment
UC1132882
Poa secunda subsp. secunda
A. Simontacchi
1940-5-17
747
Lassen
1.1 mi ssw Dixie Spring; Lassen Nat'l Forest, Halls Flat Quadrangle
Comment
UC506987
Poa secunda subsp. secunda
George A. Fischer and Irwin H. Johnson
1933-7-12
F- 219
Lassen
Lassen Nat'l Forest
1722
Comment
UC70958
Poa secunda subsp. secunda
M. S. Baker and Frank Nutting
1894-7-3
Lassen
Dixie Valley
Comment
UCD90487
Poa secunda subsp. secunda
A. A. Beetle
1941-6-28
2797
Lassen
10 miles W of Chester.
1524
Comment
UCD90488
Poa secunda subsp. secunda
A. A. Beetle
1941-6-28
2797
Lassen
10 miles W of Chester.
1524
Comment
UC1143038
Poa wheeleri
L. R. Short
1936-4-30
S- 341
Lassen
Burgess Spring Experimental Range; Lassen Nat'l Forest
1859
Comment
UCD91756
Poa wheeleri
L. Whitney
1935-6-23
s.n.
Lassen
Fruit Grower's Supply Co., Camp 10.
Comment
UC73604
Polemonium occidentale
Milo S. Baker
1894-1
Lassen
Bridge Creek
Comment
CAS-BOT-BC74168
Polyctenium fremontii
James Jokerst
1983-5-31
1786
Lassen
Grasshopper Valley.
1583
Comment
CHSC532
Polyctenium fremontii
1944-6-30
Lassen
Grasshopper Valley.
1624
Comment
CAS-BOT-BC74170
Polyctenium fremontii
Arnold Tiehm; Margaret Williams; Jan Nachlinger
1988-6-2
11703
Lassen
6.6 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, along the highway.
1347
Comment
SEINET229584
Polyctenium fremontii
Gary Schoolcraft
1984-7-9
1287
Lassen
On s. south of Fillman Road 3.8 miles west of Hwy 395.
1609
Comment
JEPS94355
Polyctenium fremontii var. fremontii
Vernon H. Oswald and Lowell Ahart
1997-5-7
8405
Lassen
1.7 ni e of Highway 395 (Mud Flat along Smoke Creek Ranch Road); Mud Flat, Smoke Creek Ranch Road
1356
Comment
SEINET5326413
Polyctenium williamsiae
A. Tiehm, J. Nachlinger, M. J. Williams
1988-1
11703
Lassen
On highway 395 from Susanville to Alturas, 6.6 road miles N of the Wendel Road.
1347
Comment
CHSC117618
Polygala subspinosa
L. P. Janeway and B. Castro
2015-6-5
11765
Lassen
Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn.
1731
Comment
NY404581
Polygonum amphibium var. emersum
G. H. True Jr.
1939-7-6
1038
Lassen
George Bailey Ranch, Honey Lake Valley
Comment
UC725581
Polygonum bistortoides
A. A. Heller
1938-6-4
15141
Lassen
2 mi w Westwood
Comment
RSA518872
Polygonum davisiae
Barbara J. Ertter
1988-7-25
7863
Lassen
ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville.
2287
Comment
CAS-BOT-BC414490
Polygonum douglasii
John Thomas Howell
1974-7-10
50562
Lassen
Elysian Valley
1325
Comment
CHSC60384
Polygonum douglasii subsp. douglasii
Mary Ann Showers
1992-6-12
2528
Lassen
Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake.
1859
Comment
UC1567355
Polygonum douglasii subsp. majus
G. Schoolcraft
1989-6-19
1919
Lassen
Ash Valley RNA/ACEC
1554
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
JEPS117589
Polygonum douglasii subsp. spergulariiforme
2010-7-31
16979
Lassen
About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin
1521
Comment
UC850047
Polygonum douglasii subsp. spergulariiforme
M. S. Baker and F. Nutting
1894-1
Lassen
Lassen Co.
Comment
UC1924203
Polygonum lapathifolium
Debra Valov
2005-8-20
2005221
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1271
Comment
JEPS50618
Polygonum persicaria
W. L. Jepson
1939-8-11
19377
Lassen
Milford
1280
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
CHSC60844
Polygonum polygaloides subsp. confertiflorum
Vernon H. Oswald; Lowell Ahart
1993-6-28
5593
Lassen
Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.
1719
Comment
HSC69611
Polygonum polygaloides subsp. confertiflorum
Teresa Prendusi
1980-7-1
Lassen
Champs Flat, 8 mi. W of N Eagle Lake.
1677
Comment
JEPS96123
Polygonum polygaloides subsp. confertiflorum
Vernon H. Oswald and Lowell Ahart
1996-6-24
7856
Lassen
ca. 0.5 mi e Eagle Lake Rd. (A1) (2.5 mi s of Eagle Lake, ca. 0.3 mi s of cabins); Modoc Plateau, Papoose Meadows
1633
Comment
RSA339992
Polygonum polygaloides subsp. confertiflorum
Noel Holmgren, Patricia K. Holmgren
1980-7-3
9466
Lassen
Hwy 395, 7.4 km (4.6 mi) south of Ravendale.
1620
Comment
UC1520661
Polygonum polygaloides subsp. confertiflorum
Noel H. Holmgren and Patricia K. Holmgren
1980-7-3
9466
Lassen
along US 395 5.6 km (3.5 mi) s Madeline; Madeline Plains
1620
Comment
CAS-BOT-BC419910
Polygonum polygaloides subsp. kelloggii
George W. Gillett
1957-7-28
939
Lassen
Lassen Volcanic National Park. Widow Lake.
2072
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
CHSC58507
Polygonum polygaloides subsp. kelloggii
Vernon H. Oswald
1992-7-3
5047
Lassen
Lassen Volcanic National Park. Trail from Juniper L. to Cameron Meadow, between the trail to Jakey L. and the trail to Horseshoe L.
1981
Comment
CHSC99128
Polygonum polygaloides subsp. kelloggii
Lowell Ahart; John Dittes
2008-6-19
14897
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
UCD100647
Polygonum ramosissimum
Verne Grant; Irving Schneider
1947-8-1
8227
Lassen
Southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain.
Comment
UC506934
Polygonum sawatchense subsp. oblivium
George A. Fischer and Irwin H. Johnson
1938-7-14
F 248
Lassen
Lassen National Forest
1767
Comment
CAS-BOT-BC420157
Polygonum sawatchense subsp. sawatchense
Clarence R. Quick
1961-6-21
61 -18
Lassen
Adjacent to Road 21, Blacks Mountain Expermental [Experimental] Forest, northeast of Lassen Peak
1798
Comment
CAS-BOT-BC420159
Polygonum sawatchense subsp. sawatchense
G. Schoolcraft
1988-6-15
1814
Lassen
Ash Valley RNA/ACEC 16 miles east of Adin
1584
Comment
HSC82252
Polygonum spergulariiforme
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6009
Lassen
Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley
1555
Comment
JEPS70696
Polypogon monspeliensis
W. L. Jepson
1918-8-2
7771
Lassen
Beckwith Pass
1463
Comment
RSA129377
Polypogon monspeliensis
H. S. Yates
1936-8-11
6054
Lassen
Near Red Rock.
1341
Comment
UC1100378
Polypogon monspeliensis
Malcolm A. Nobs and S. Galen Smith
1949-8-20
1478
Lassen
1 mi n Doyle (Honey Lake Valley, marshy banks of Long Creek); Honey Lake Valley, banks of Long Creek
Comment
JEPS19802
Porterella carnosula
Rimo Bacigalupi with S. Galen Smith
1957-6-29
6023
Lassen
along U.S. Highway 395, 3.1 mi s Madeline (Madeline Plains); Madeline Plains
1615
Comment
SEINET10460825
Porterella carnosula
Secrest
1951-6-23
SECREST s.n.
Lassen
Comment
SEINET10460829
Porterella carnosula
Howell
1934-7-7
Howell 12466
Lassen
Near Feather Lake
Comment
SEINET10460831
Porterella carnosula
Gillett
1957-7-29
GILLETT 938
Lassen
Marsh area near west end of lake, on drying mud flats
2073
Comment
CHSC4850
Potamogeton
R. Carter
1967-7-13
594
Lassen
Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek.
1560
Comment
RSA772321
Potamogeton diversifolius
Robert 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
CAS-BOT-BC267149
Potamogeton foliosus
Wm. Anderson
1963-5-12
s.n.
Lassen
Highrock (between Wendel and Nevada line)
Comment
SEINET4689828
Potamogeton foliosus var. foliosus
B. L. Wilson, D. Lytjen
2005-7-28
11482
Lassen
Deep creek near confluence with a smaller stream
1359
Comment
JEPS103228
Potamogeton illinoensis
G. Schoolcraft
1996-9-11
2562
Lassen
Willow Creek below petroglyphs and above dam
1432
Comment
OBI77555
Potamogeton natans
Anthony Baniaga
2011-7-23
458
Lassen
Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4
1700
Comment
UCD170231
Potamogeton natans
K. M. Meyer; A. Townesmith
2007-7-21
146
Lassen
Lassen National Forest. 1.3 mile on Road 10 to Silver Lake off Road 110.
1963
Comment
JEPS103226
Potamogeton nodosus
G. Schoolcraft
1996-9-11
2563
Lassen
Willow Creek below petroglyphs above dam
1341
Comment
RSA323730
Potamogeton pusillus
A. Tiehm, Gary Schoolcraft
1984-8-14
9247
Lassen
Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.
1699
Comment
CAS-BOT-BC454029
Potamogeton pusillus subsp. pusillus
Arnold Tiehm; Gary Schoolcraft
1984-8-14
9247
Lassen
Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line
1698
Comment
CHSC64894
Potentilla basaltica
Vernon H. Oswald
1995-6-26
6933
Lassen
Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the w side of the road adjacent to a flat of low sagebrush.
1542
Comment
CAS-BOT-BC143111
Potentilla breweri
M. S. Baker; Frank Nutting
1894-7-28
s.n.
Lassen
Bridge Creek
Comment
UC12514
Potentilla breweri
M. S. Baker and Frank Nutting
1894-7-28
Lassen
Bridge Creek
Comment
CHSC60395
Potentilla flabellifolia
Mary Ann Showers
1992-6-13
2553
Lassen
Lassen Volcanic National Park. Shoreline at western end of Widow Lake.
2072
Comment
POM34025
Potentilla glandulosa subsp. ashlandica
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mountain; Susanville; Perkin's Ranch.
1829
Comment
UC506995
Potentilla gracilis
George A. Fischer and Irwin H. Johnson
1933-7-12
F 208
Lassen
Grass Valley Lassen National Forest, Grass Valley
1700
Comment
CHSC5048
Potentilla gracilis var. fastigiata
L. B. Barlow
1967-7-1
80
Lassen
2 mi. west Murrer's Ranch turnoff, 14.9 mi. north of Susanville, Highway 139.
1463
Comment
NY832928
Potentilla gracilis var. fastigiata
B. M. Bartholomew
1988-6-25
4373
Lassen
Long Valley, southern end of the Warner Mountains
2080
Comment
SEINET6637685
Potentilla gracilis var. fastigiata
C. G. Gulling
1905-1
1529
Lassen
Big Meadows
Comment
UC1142924
Potentilla gracilis var. fastigiata
A. L. Hormay
1941-6-23
11
Lassen
Burgess Spring Lassen National Forest
1676
Comment
CAS-BOT-BC540360
Potentilla gracilis var. fastigiata
Marcus E. A M Jones
1897-6-19
s. n.
Lassen
Chat
1615
Comment
SBBG3009
Potentilla gracilis var. flabelliformis
H. and M. Dearing
1938-7-1
2240
Lassen
W of Susanville
Comment
CHSC4758
Potentilla millefolia
R. Carter
1967-7-14
614
Lassen
Hog Flat Reservoir, between highway 92 and shore of reservoir.
Comment
SJSU5833
Potentilla millefolia
J. W. Tilden
1960-6-27
1512
Lassen
5 mi E of Westwood on Moonlight Rd
1524
Comment
UC1128271
Potentilla millefolia
A. Simontacchi
1940-5-17
743
Lassen
5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quad.
1706
Comment
UC506926
Potentilla millefolia
George A. Fischer and Irwin H. Johnson
1933-7-14
F. 240
Lassen
Patterson R.S. Lassen National Forest, Patterson R.S.
1737
Comment
CAS-BOT-BC158514
Potentilla millefolia
G. D. Hanna
1958-9-22
s.n.
Lassen
Road from Caribou Lake to Cone Lake
Comment
CAS-BOT-BC158516
Potentilla millefolia
1927-6-10
7
Lassen
Lassen National Forest, Norval Flat
1747
Comment
UC1191492
Potentilla rivalis
Verne Grant, Irving Schneider
1947-8-1
8236
Lassen
e end of Tule Lake
Comment
JEPS126563
Poterium sanguisorba
Lowell Ahart, John Dittes
2016-6-7
20998
Lassen
On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley.
Comment
UCD35732
Prunus emarginata
Beecher Crampton
1960-6-18
5725
Lassen
southern Warner Mtns., vicinity of Blue Lake Ranch.
1981
Comment
CAS-BOT-BC154771
Prunus virginiana var. demissa
L. B. Barlow
1967-7-1
63
Lassen
5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road
1554
Comment
CAS-BOT-BC154773
Prunus virginiana var. demissa
John Thomas Howell
1974-7-8
50494
Lassen
Susanville
1295
Comment
CHSC6259
Prunus virginiana var. demissa
R. Gein
1946-6-11
Lassen
Eagle Lake. On Pine Creek.
1580
Comment
JEPS44919
Prunus virginiana var. demissa
W. L. Jepson
1918-8-3
7800
Lassen
Honey Lake Valley
1219
Comment
RSA123193
Prunus virginiana var. demissa
L. R. Short, Wm Gansberg
1936-7-3
S- 466
Lassen
MDM. Burgess Spr. Exp. Range.
1848
Comment
UC2013400
Prunus virginiana var. demissa
Debra Valov
2011-6-16
1105
Lassen
Bieber; off County A2 c. 8 km east of Highway 299.
Comment
CAS-BOT-BC239798
Pseudoroegneria spicata
John Thomas Howell
1976-7-20
51999
Lassen
About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek
1432
Comment
JEPS127720
Pseudoroegneria spicata
Alejandro Brambila, Michael Dolan
2016-7-28
CA 320 -175
Lassen
171 west from 385 south. After the second tight switchback the population is off the road downslope.
Comment
UCD91511
Pseudoroegneria spicata
August L. Hormay
1929-6-1
s.n.
Lassen
Susanville Forest Office.
Comment
POM112808
Pseudoroegneria spicata subsp. spicata
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
UC718009
Pseudoroegneria spicata subsp. spicata
David D. Keck
1944-7-8
5450
Lassen
1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada
1341
Comment
CHSC29919
Pseudostellaria jamesiana
Robin Ondricek
1978-6-27
73
Lassen
On Coleman Lake Rd., 1977 burn area.
1950
Comment
CHSC67079
Pseudostellaria jamesiana
Jeanne Boze
1981-6-13
116
Lassen
On northeast slope of Galletin Peak.
1981
Comment
CHSC68858
Pseudostellaria jamesiana
Vernon Oswald; Lowell Ahart
1997-6-24
8619
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
UC1924240
Psilocarphus brevissimus
Debra Valov
2004-6-8
2004244
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1271
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
JEPS127273
Psilocarphus brevissimus var. brevissimus
Lowell Ahart, John Dittes
2016-7-13
21110
Lassen
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.
Comment
JEPS30616
Psilocarphus brevissimus var. brevissimus
Peter H. Raven with Otto T. Solbrig
1958-6-17
13284
Lassen
along United States Highway 395 1.9 me s Ravendale
Comment
UC1137705
Psilocarphus brevissimus var. brevissimus
A. Simontacchi
1940-6-4
804
Lassen
14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad.
1783
Comment
JEPS114630
Psilocarphus tenellus var. tenellus
Lowell Ahart, John Dittes
2008-6-22
15029
Lassen
About 120 yards west of the road levee, on the bottom of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber
1262
Comment
RSA32005
Pterospora andromedea
A. A. Heller
1938-7-28
15302
Lassen
About 2 miles E of Westwood
1524
Comment
UC1562803
Pterospora andromedea
Barbara Ertter
1987-7-25
7319
Lassen
Hwy 44 ca 1 mi E of Shasta Co. line
1645
Comment
CHSC77267
Puccinellia distans
G. Schoolcraft
1993-6-1
2270
Lassen
Coyote Spring.
1463
Comment
RSA0036998
Puccinellia lemmonii
Lowell A. Ahart, John Dittes
2008-6-20
14967
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 miles (air) northeast of Bieber.
1263
Comment
RSA647519
Puccinellia nuttalliana
Marion P. Harthill
1972-6-17
801
Lassen
Standish.
Comment
CHSC12464
Purshia tridentata
Robert W. Severin
1969-6-20
6
Lassen
1 mile sse of E.L.B.S. 2/3 mile along road up to Five Points.
1630
Comment
NY848524
Purshia tridentata
D. B. Dunn
1971-6-2
17784
Lassen
6 miles north of Hallelujah junction on U.S. Hwy 395
1402
Comment
SJSU14476
Purshia tridentata
W. D. Pitts
1990-5-24
300
Lassen
by Hwy 395, 5 mi N of Doyle
1310
Comment
SEINET7463175
Purshia tridentata
F. B. Headley
1905-5-28
s.n.
Lassen
Honey Lake.
Comment
CHSC118826
Purshia tridentata var. tridentata
L. P. Janeway; B. Castro
2015-6-5
11768
Lassen
Great Basin, Modoc Plateau. Along the road from the south end of 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
HSC19580
Purshia tridentata var. tridentata
Fred J. Kindel
1955-6-6
Lassen
Doyle
Comment
HSC19587
Purshia tridentata var. tridentata
J. J. Wagoner
1965-5-1
50
Lassen
22 mi. N of Susanville on Hwy. 395
Comment
HSC19588
Purshia tridentata var. tridentata
K. P. St. John
1965-5-6
26
Lassen
8 mi. S of Ravendale on Hwy. 395
Comment
JEPS44640
Purshia tridentata var. tridentata
Frank W. Peirson
1932-7-20
10355
Lassen
20 mi se Susanville
Comment
RSA152670
Purshia tridentata var. tridentata
Dorothy Wiggins
1961-6-10
16321
Lassen
Along California Highway 36. ABout 6 miles W of Susanville.
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
JEPS28661
Pyrola asarifolia
George W. Gillett
1957-7-22
880
Lassen
Snag Lake, South shore near Campsite
1850
Comment
CAS-BOT-BC462880
Pyrola asarifolia
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mt., Susanville, Perkin's Ranch
2133
Comment
POM39973
Pyrrocoma carthamoides var. cusickii
Marcus E. Jones
1897-6-30
s.n.
Lassen
Eagle Lake, 27 miles from Susanville
1524
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
UC1037291
Pyrrocoma hirta var. lanulosa
Leo Whitney
1934-7-10
1671
Lassen
ca 14 mi w Eagle Lake (dry meadow near Harvey Valley Spring); Lassen National forest, Harvey Valley
1737
Comment
CHSC115058
Pyrrocoma lucida
Allison Sanger
2012-7-25
Lassen
Lassen National Forest, Eagle Lake Ranger District. Near Road 28N38 just south of junction with Road 28N03, about 1.2 miles east of Mountain Meadows Reservoir. Sec. 31, SE1/4 of NE1/4 and Sec. 32 SW1/4 of NW1/4.
1554
Comment
CDA18269
Pyrrocoma racemosa var. paniculata
G. D. Barbe
1974-8-2
1934
Lassen
Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70.
1524
Comment
CHSC5250
Quercus kelloggii
P. Balch
1955-7-25
Lassen
Eagle Lake. Roop Mt. Rd., 5 mi from Susanville.
1828
Comment
UC1192295
Quercus kelloggii
Verne Grant and Irving Schneider
1947-9-7
8400
Lassen
several mi s Janesville (along Highway 395, w of Honey Lake, and along e foot of Sierras)
Comment
CAS-BOT-BC104477
Quercus vacciniifolia
C. Hart Merriam
1925-8-22
s.n.
Lassen
Summit, between Butte Creek Meadows and Lake Almanor
Comment
UC773871
Ranunculus alismifolius var. alismifolius
L. R. Short
1936-4-28
S- 339
Lassen
Harvey Valley Lassen <National> Forest
1706
Comment
CHSC71322
Ranunculus alismifolius var. davisii
Vernon H. Oswald
1998-6-22
9230
Lassen
Champs Flat Rd. (A-21) 1.8 mi north of Hwy. 44, ca. 18 air mi north of Westwood.
1749
Comment
JEPS107311
Ranunculus aquatilis var. aquatilis
Lowell Ahart, John Dittes
2005-6-1
11904
Lassen
Bottom of a depression, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction
1459
Comment
CAS-BOT-BC334481
Ranunculus aquatilis var. capillaceus
R. F. Thorne; Larry E. DeBuhr
1975-8-22
46981
Lassen
Along Hwy 395 ca 6 miles N of Madeline and 4.5 miles S of Modoc county line.
1616
Comment
CHSC8743
Ranunculus aquatilis var. capillaceus
S. Chulasmai
1966-5-13
35
Lassen
Vernal pool, (Johnstonville).
Comment
UC1101368
Ranunculus aquatilis var. capillaceus
Herbert L. Mason and Verne Grant
1947-7-9
13290
Lassen
5 mi e Bieber (irrigation ditch)
Comment
CAS-BOT-BC379025
Ranunculus aquatilis var. diffusus
M. S. Taylor
1982-6-12
4647
Lassen
aquatic in still pond S side of Hwy 36, N side of west fork Susan River, at jct with Willow Creek Rd., ca. 8 mi W of Susanville
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
NY494380
Ranunculus cymbalaria
M. A. Nobs
1949-8-20
1484
Lassen
Marshy banks of Long Creek, 1 mile north of Doyle, Honey Lake Valley
Comment
RSA0011455
Ranunculus cymbalaria subsp. saximontanus
Robert F. Thorne, Larry E. DeBuhr
1975-8-22
46982
Lassen
Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line.
1616
Comment
RSA523410
Ranunculus cymbalaria var. saximontanus
Rodney H. True
1936-6-26
544
Lassen
Honey Lake Valley- Willow Creek Valley Road.
1524
Comment
UC1025100
Ranunculus flammula
Leo Whitney
1934-8-5
1800
Lassen
16 mi nw Westwood; Lassen National Forest, Caribou Lake
2194
Comment
UC1191440
Ranunculus flammula
Verne Grant and Irving Schneider
1947-8-24
8267
Lassen
Blue Lake; nw shore, n Lassen Co.
Comment
CHSC7733
Ranunculus glaberrimus
Beverley J. Wise
1969-4-10
87
Lassen
3 mi. south of Susanville on Las. Co. Rd. 204 (Gold Run Road).
1310
Comment
CHSC61175
Ranunculus glaberrimus var. ellipticus
Vernon H. Oswald; Lowell Ahart
1993-5-12
5383
Lassen
Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, along Pine Creek.
1737
Comment
JEPS123841
Ranunculus macounii
Lowell Ahart, John Dittes
2015-7-14
20328
Lassen
About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment
JEPS60696
Ranunculus occidentalis
Frances D. Payne
1929-7-12
99 A
Lassen
Upper Silver Creek; ne Lassen Co.
Comment
UC1584003
Ranunculus occidentalis
G. Schoolcraft
1990-5-15
2050
Lassen
about 4 mi s Nubieber; John's Valley
1310
Comment
UC1924564
Ranunculus occidentalis
Debra Valov
2006-5-30
2006036
Lassen
Bieber off County Rd A2 c. 8.7 km east of Hwy 299
1285
Comment
UC506988
Ranunculus occidentalis
George A. Fischer and Irwin H. Johnson
1933-7-12
213
Lassen
Lassen National Forest
1722
Comment
UC69597
Ranunculus occidentalis
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3379
Lassen
Honey Lake Valley
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
NY494893
Ranunculus sceleratus
N. H. Holmgren
1978-6-11
8916
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
CDA3492
Ranunculus testiculatus
T. C. Fuller
1969-5-22
18480
Lassen
County fairgrounds, Susanville.
0
Comment
CAS-BOT-BC362886
Ratibida columnifera
John Thomas Howell
1974-7-9
50486
Lassen
SW. of Wildcat Point, Eagle Lake
1554
Comment
CHSC7763
Ribes aureum
Beverley J. Wise
1969-5-4
98
Lassen
North shore of Leavitt Lake, south side Hwy 395.
1266
Comment
SBBG2740
Ribes aureum
H. and M. Dearing
1939-6-6
3563
Lassen
Pitt River, Bieber
Comment
CHSC67058
Ribes cereum
Willis Ball
1969-6-19
8
Lassen
Found approx. 100 yds. N.E. of E.L.B.S.
1615
Comment
UC1127635
Ribes cereum
A. Simontacchi
1940-6-15
882
Lassen
0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle
Comment
CHSC60742
Ribes cereum var. cereum
Vernon H. Oswald; Lowell Ahart
1993-6-3
5487
Lassen
Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville.
1688
Comment
UC1609464
Ribes cereum var. cereum
Vernon H. Oswald and Lowell Ahart
1993-6-3
5487 -5487
Lassen
between Poison Lake and Susanville (E side of Champs Flat Rd.(Lassen 105, Forest 32N28Y), 7.0 mi N of its jct. with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek)
1688
Comment
CAS-BOT-BC169007
Ribes hudsonianum
L. S. Smith
1918-8-13
1033
Lassen
Lost Lake, Silver Creek, Modoc National Forest
2286
Comment
NY455349
Ribes nevadense
A. A. Heller
1938-6-4
15145
Lassen
1 miles east of Fredonyer Pass
1706.9
Comment
CHSC6264
Ribes roezlii
L. Harman
1946-6-23
Lassen
Eagle Lake. Roop mountain.
2133
Comment
HSC20330
Ribes roezlii
Jim Vaughn
1956-8-5
Lassen
Upper Hot Springs Creek, Devils Kitchen area, Mt. Lassen National Park
1829
Comment
SEINET10482949
Ribes roezlii
Mary Susan Taylor
1974-1
Taylor 285
Lassen
Vicinity of Eagle Lake, ca. 13 mi NW of Susanville.
Comment
CHSC106588
Ribes velutinum
C. Dow; D. Garrison
2008-5-3
Lassen
Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs.
1439
Comment
CHSC12424
Ribes velutinum
Anne Linda Brisk
1969-6-19
1
Lassen
1/4 mi NE of ELBS.
1554
Comment
SEINET177615
Ribes velutinum
M. E. Jones
1897-6-25
s.n.
Lassen
Susanville
1341
Comment
RSA0023962
Ribes velutinum
Marcus E. Jones
1897-6-25
s.n.
Lassen
Susanville.
1341
Comment
CHSC23568
Ribes viscosissimum
W. O. Baum
1971-6-21
32
Lassen
E slope on fire trail on Gallatin Peak.
1920
Comment
UC1523807
Ribes viscosissimum
Gary Schoolcraft
1982-8-9
860
Lassen
near Susanville; Diamond Mtn.
2011
Comment
CAS-BOT-BC363012
Rigiopappus leptocladus
Doris Kildale Gillespie
1930-5-12
9341
Lassen
2 miles north of Susanville on road to Alturas
Comment
UC1126739
Rorippa curvisiliqua
A. Simontacchi
1940-6-4
806
Lassen
14.8 mi w Harvey Mountain Lookout; Halls Flat Quad., Lassen National Forest
Comment
CHSC75479
Rorippa curvisiliqua var. curvisiliqua
Vernon H. Oswald; Lowell Ahart
1999-6-9
9758
Lassen
Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. On a meadow adjacent to the highway.
1645
Comment
CHSC36472
Rorippa nasturtium-aquaticum
Jeffrey R. Peek
1982-6-4
33
Lassen
Ca. 50 yds along Willow Creek from its beginning in Murrers Upper Meadow.
Comment
UCD115377
Rorippa sinuata
Verne Grant; Irving Schneider
1947-8-1
8226
Lassen
Irrigation ditch running southwest into State Fish and Game nesting aera on west end of Section 19 on Madeline Plain.
Comment
CHSC5002
Rosa woodsii subsp. ultramontana
K. C. Newman
1967-6-30
27
Lassen
Collected ca. 2 mi. NW of ELBS on the other side of the lake in the Merrill Burn area.
1554
Comment
HSC81474
Rosa woodsii subsp. ultramontana
Thomas W. Nelson, Jane P. Nelson
1980-7-6
6019
Lassen
Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir.
1585
Comment
JEPS45635
Rosa woodsii var. ultramontana
W. L. Jepson
1918-8-2
7782
Lassen
1 mi below Boni Ranch (lower bench of creek); Long Valley Creek
1371
Comment
CAS-BOT-BC148389
Rubus leucodermis
Louella Bass
1973-5-29
EV- 53
Lassen
Elysian Valley - Sierra Nevada
1325
Comment
CAS-BOT-BC148391
Rubus leucodermis
John Thomas Howell; Gordon H. True
1973-8-1
50248
Lassen
Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada
1950
Comment
CHSC23481
Rubus leucodermis
Wayne O. Baum
1971-7-5
71 -84
Lassen
E. slope of Gallatin Peak.
2072
Comment
JEPS94540
Rubus parviflorus
Vernon Oswald and Lowell Ahart
1997-6-24
8614
Lassen
0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43
1889
Comment
UC1070543
Rumex
H. S. Yates
1936-8-11
6057
Lassen
near Red Rock; Sierraville Quad.
1341
Comment
CAS-BOT-BC421955
Rumex acetosella
Margaret Williams; Steven Williams
1974-7-26
74 -L-23
Lassen
Near Hellelujah Junction, west of Hwy 395 and south of Hwy 70
1493
Comment
SEINET4199964
Rumex crispus
M. J. Williams
1974-7-29
74 -L-64
Lassen
2 mi. West of Hallelujah Junction, south of Hwy. 70
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
CHSC58851
Rumex occidentalis
Vernon H. Oswald; Lowell Ahart
1992-7-16
5122
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
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
CHSC112393
Rumex salicifolius
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18774
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
UC1036081
Rumex salicifolius var. lacustris
Annie M. Alexander and Louise Kellogg
1946-8-11
5154
Lassen
nw end Eagle Lake (Sam Webb's Hunting Cabins)
Comment
UC1520656
Rumex salicifolius var. lacustris
Noel H. Holmgren and Patricia K. Holmgren
1980-7-3
9475
Lassen
0.7 mi w (1.1 km w) U. S. Hwy 395 (a valley road, from a turnoff 6.4 mi (10.3 km) s of Madeline); Madeline Plains
1615
Comment
UC748281
Rumex salicifolius var. triangulivalvis
Annie M. Alexander and Louise Kellogg
1946-8-11
5153
Lassen
nw end Grasshopper Valley
Comment
RSA0105589
Rumex triangulivalvis
Lowell Ahart, John Dittes
2013-7-22
18867
Lassen
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
JEPS74706
Rumex venosus
Wayne Roderick
1969-5-24
Lassen
along Hwy 395 near Janesville
Comment
UC1776705
Rumex venosus
G. Schoolcraft
1993-6-1
2267
Lassen
Along Hwy 395 about 1.5 mi. n. of turnoff to Wendel
1280
Comment
UCD101656
Rumex venosus
R. N. Raynor
1939-5-31
s.n.
Lassen
Milford, Honey Lake Valley.
Comment
JEPS51078
Sagina saginoides
Brown and Wieslander
1922-7-30
45
Lassen
Eagle Lake, Martin Springs
Comment
UC568
Sagittaria
State Geological Survey
1800-1
2189
Lassen
Comment
CHSC5006
Sagittaria cuneata
L. G. Bennett
1968-7-8
124
Lassen
Murrers Meadow, north end, near Eagle Lake.
1493
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
CHSC96721
Salix arctica
Gordon Leppig
1998-7-12
938
Lassen
Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex.
1970
Comment
CAS-BOT-BC102812
Salix boothii
Mrs. H. P. Bracelin
1934-6-14
820
Lassen
Upper Silver Creek, near Silver Lake (Lost Lake), Warner Mountains
2316
Comment
CHSC58514
Salix boothii
Vernon H. Oswald
1992-7-3
5048
Lassen
Trail from Juniper L. to Snag L., on the W edge of Cameron Meadow.
1950
Comment
CAS-BOT-BC108056
Salix exigua
P. Monnet
1919-7-1
823
Lassen
Hot Springs Peak
91
Comment
UC481924
Salix exigua var. hindsiana
Mrs. H. P. Bracelin
1931-6-29
485
Lassen
at edge of Pit River McArthur
960
Comment
JEPS107798
Salix jepsonii
Lowell Ahart, John Dittes
2005-6-2
11947
Lassen
Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction
1601
Comment
CAS-BOT-BC128225
Salix lasiandra subsp. caudata
James Vale; Keith Wagnon; Walter Knight; Irja Knight
1981-5-24
4121
Lassen
Willow Creek Campground on road between Adin and Said Valley Reservoir
Comment
CAS-BOT-BC128171
Salix lasiandra var. lasiandra
John Thomas Howell; Gordon H. True
1973-7-31
50042
Lassen
On road from Janesville to Thompson Peak, Diamond Range - Sierra Nevada
1783
Comment
CAS-BOT-BC128173
Salix lasiandra var. lasiandra
Hans Leschke
1960-8-8
1736
Lassen
Below trail ski hut, Crumbaugh Lake
1981
Comment
JEPS88212
Salix lasiandra var. lasiandra
Vernon H. Oswald and Lowell Ahart
1996-6-17
7790
Lassen
Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau
1402
Comment
RSA746513
Salix lasiolepis
K. M. Meyer, A. Townesmith
2007-7-19
138
Lassen
Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek.
1459
Comment
CHSC60767
Salix lemmonii
Vernon H. Oswald; Lowell Ahart
1993-6-3
5489
Lassen
Bridge Creek Spring Rd. (Lassen 112, Forest 31N06), at Bridge Creek, N of Hwy 44 between Poison Lake and Susanville.
1746
Comment
POM362823
Salix lemmonii
Carleton R. Ball, Emily Smith, H. P. Bracelin
1932-7-24
684
Lassen
Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park.
2043
Comment
CHSC93562
Salix lucida subsp. lasiandra
Lowell Ahart; John Dittes
2005-6-2
11925
Lassen
Long Valley, along a small ditch, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction.
1459
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
CAS-BOT-BC129525
Salix melanopsis
G. Schoolcraft
1999-7-6
2853
Lassen
Along Susan River near Devil's Corral Trailhead
1402
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
UCD125446
Salvia aethiopis
Collector Unknown
1950-1
s.n.
Lassen
Susanville.
Comment
CDA19717
Salvia dorrii
D. Tillotson
1942-6-1
s.n.
Lassen
Modoc Plateau; Mud Flat.
0
Comment
CHSC42206
Salvia dorrii
C. E. Laver
1985-6-1
Lassen
Ca. 5.5 mi ne of Litchfield and 5 mi nw of Wendel.
1371
Comment
HSC31743
Salvia dorrii
Donald Spalinger
1974-5-16
67
Lassen
Near Hwy. leading from Wendel to Flanigan
1280
Comment
SEINET13947383
Salvia dorrii
Arthur Cronquist, Arthur H. Holmgren
1959-1
8462
Lassen
50 mi SE of Susanville
Comment
CAS-BOT-BC214310
Salvia dorrii var. pilosa
H. D. Ripley; R. C. Barneby
1944-5-30
5966
Lassen
Secret Valley
1524
Comment
CHSC12422
Sambucus mexicana
Anne Linda Brisk
1969-6-26
28
Lassen
7.2 mi SW of ELBS on Road 4.25.
1584
Comment
CHSC60277
Sambucus mexicana
P. V. Caldwell
1972-6-23
247
Lassen
Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow, on the bank.
Comment
UCD127944
Sanicula bipinnatifida
W. W. Robbins
1926-4-17
534
Lassen
Grass Valley.
Comment
OBI75902
Sanicula graveolens
Anthony Baniaga
2011-8-1
475
Lassen
Lassen Natl Forest. NW Swain Meadow. Swain Mtn qud T30N R8E sec 27 SE of NW
1768
Comment
UC1409833
Sanicula tuberosa
K. Morris, Dunn and Conrad
1973-5-25
242
Lassen
7.6 mi nw of Junction of Hwy 36 and 44 on Highway 44 Highway 44
Comment
UC1598734
Sanicula tuberosa
M. S. Baker and Frank Nutting
1894-7-9
Lassen
Pine Creek
Comment
CDA23525
Sarcobatus vermiculatus
M. R. Pryor
1953-9-22
Lassen
0.5 mile west of Jack Crow s property, Stacey.
0
Comment
NY540264
Sarcobatus vermiculatus
E. K. Balls
1952-10-10
18136
Lassen
5.2 miles west of Standish, Highway 395, Susanville to Alturas
1249.7
Comment
UC768791
Sarcobatus vermiculatus
R. F. Hoover
1940-9-28
4637
Lassen
Leavitt
Comment
CAS-BOT-BC466201
Sarcodes sanguinea
Peter H. Raven; Otto T. Solbrig
1958-6-16
13254
Lassen
Along State Hwy 36, 0.3 mi E of summit of Fredonyer Pass
Comment
CAS-BOT-BC466321
Sarcodes sanguinea
John Thomas Howell
1973-7-10
49786
Lassen
Sierra Nevada, Fredonyer Pass
1737
Comment
UC1037239
Saxifraga aprica
Leo Whitney
1935-6-11
3227
Lassen
Camp 10, Fruit Grower's Supply Company Camp 10; Lassen National Forest, Fruit Grower's Supply Company
Comment
UC1127669
Saxifraga nidifica var. nidifica
A. Simontacchi
1940-5-14
726
Lassen
4.1 mi wnw of Aspen Well (Lassen National Forest); Lassen National Forest
1767
Comment
UC1142964
Schoenoplectus acutus var. acutus
A. L. Hormay
1941-6-17
23
Lassen
meadow lake near Westwood; Lassen National Forest, meadow lake near Westwood
1615
Comment
RSA0009705
Schoenoplectus acutus var. occidentalis
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
POM111523
Schoenoplectus fluviatilis
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
JEPS63798
Scirpus acutus var. occidentalis
W. L. Jepson
1918-8-2
7786
Lassen
1 mi below Boni Ranch house (on lower bench of Long Valley Creek, Long Valley); Long Valley, Long Valley Creek below Boni Ranch house
1371
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
UC1100760
Scirpus acutus var. occidentalis
Verne Grant and Irving Schneider
1947-8-24
8270
Lassen
nw shore Blue Lake (northern Lassen County); nw shore Blue Lake
Comment
CHSC66415
Scirpus microcarpus
Vernon H. Oswald; Lowell Ahart
1996-6-17
7819
Lassen
Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. In a marshy pool at the 6.0 mile post E of Devils Corral Trailhead.
1420
Comment
JEPS11413
Scrophularia desertorum
R. F. Hoover
1940-9-28
4632
Lassen
Susanville
Comment
UC1713590
Scutellaria holmgreniorum
G. Schoolcraft
1986-6-18
1630
Lassen
s side of Smoke Creek (between Shinn and Smoke Creek ranches)
1493
Comment
SEINET3861523
Scutellaria holmgreniorum
Noel H. Holmgren, Patricia K. Holmgren
1980-7-5
9524
Lassen
Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy-395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale.; 0
1585
Comment
CAS-BOT-BC214261
Scutellaria nana
G. Schoolcraft
1999-7-7
2855
Lassen
N. end of Eagle Lake just ne. of Eagle Lake Campground
1584
Comment
CAS-BOT-BC214263
Scutellaria nana
H. D. Ripley; R. C. Barneby
1943-6-15
5764
Lassen
Smoke Creek, N-E of Viewland
1341
Comment
POM252832
Scutellaria nana
A. A. Heller
1938-6-23
15186
Lassen
1 mile south of Westwood.
1524
Comment
UC1137775
Scutellaria nana
August L. Hormay
1934-7-2
Lassen
1/4 mi nw of Black's Mountain; Lassen National Forest
1706
Comment
UC1609093
Scutellaria nana
Vernon H. Oswald and Lowell Ahart
1993-7-8
5653
Lassen
on se edge of Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi n of Hwy 44)
1709
Comment
UC1184060
Senecio aronicoides
Jean Langenheim
1957-6-26
4372
Lassen
ne part Said Valley
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
JEPS87532
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
HSC28835
Senecio integerrimus
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19263
Lassen
In Harvey Valley near Cone Springs
Comment
CAS-BOT-BC363856
Senecio integerrimus var. exaltatus
Doris Kildale Gillespie
1930-5-13
9388
Lassen
Between Susanville and Janesville
Comment
CHSC92824
Senecio integerrimus var. exaltatus
Lowell Ahart; John Dittes
2005-6-1
11861
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
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
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
SJSU13986
Senecio integerrimus var. exaltatus
N. A. Hopkins
1988-5-16
1399
Lassen
by Scott Valley Rd W of Long Valley Cr 4 mi N of Hwy 70
1524
Comment
CAS-BOT-BC364253
Senecio triangularis
B. C. Cain
1925-8-24
108
Lassen
1 mi. below Drakesbad, Mt. Lassen Nat. Park
1645
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
CHSC105238
Sidalcea glaucescens
Lowell Ahart; John Dittes
2010-7-31
17016
Lassen
On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin.
1516
Comment
CAS-BOT-BC205776
Sidalcea oregana
David D. Keck; J. Clausen
1935-6-24
3740
Lassen
2 mi. S. of Ravendale
1464
Comment
CHSC27642
Sidalcea oregana
George Deniso
1978-7-21
88
Lassen
Colman L., W shore, SE of Eagle L.
1962
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
POM260184
Sidalcea oregana subsp. oregana
C. L. Hitchcock
1940-5-26
6643
Lassen
Overflow of Pitt River, 1 mile W of Bieber
Comment
UC1537657
Sidalcea oregana subsp. oregana
Gordon H. True Jr.
1937-7-10
789
Lassen
rocky mesa near Skeedaddle; near Skeedaddle
1493
Comment
UC1553380
Sidalcea oregana subsp. spicata
G. Schoolcraft
1988-7-7
1820
Lassen
at Painter Creek and Horne Ranch Rd. crossing
1645
Comment
NY54618
Sidalcea oregana var. maxima
N. H. Holmgren
1980-7-3
9479
Lassen
Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. highway 395, 16 km (10 mi) airline distance northwest of Termo
1620
Comment
NY746728
Sidalcea oregana var. maxima
A. Tiehm
1988-6-2
11704
Lassen
East side of Snowshoe [Snowstorm?] Mountain, 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway
1402
Comment
SBBG71651
Silene bernardina
S. W. Hutchinson
-Jun-1925
72
Lassen
near Eagle Lake
1554
Comment
CAS-BOT-BC384309
Silene bernardina
George W. Gillett
1957-7-28
928
Lassen
Lassen Volcanic National Park. On trail to Widow Lake above junction with Snag Lake Trail at upper end of Butte Lake
1859
Comment
CAS-BOT-BC136279
Silene douglasii
A. G. Brennels
1928-7-3
7
Lassen
Lassen Forest, Jesson Valley
1463
Comment
SD113389
Silene douglasii
Darley F. Howe
1964-8-2
3917
Lassen
East Creek, Warner Mountains, Modoc National Forest.
2010
Comment
UC8440
Silene douglasii
M. S. Baker and Frank Nutting
1894-7-5
Lassen
Dixey Valley
Comment
CAS-BOT-BC389264
Silene lemmonii
Marcus E. Jones
1897-6-28
s.n.
Lassen
Diamond Mt., Susanville. Perkin's Ranch
2133
Comment
OBI75896
Silene menziesii
Anthony Baniaga
2011-8-17
507
Lassen
Lassen Natl Forset. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E SW of SW
1896
Comment
SEINET8223955
Silene menziesii
Richard R. Halse
2006-8-3
6992
Lassen
Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely.
1860
Comment
RSA722689
Silene menziesii subsp. menziesii
R. R. Halse
2006-8-3
6992
Lassen
Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely.
1860
Comment
JEPS123843
Silene nuda
Lowell Ahart, John Dittes
2015-7-14
20334
Lassen
About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber.
Comment
JEPS50953
Silene nuda
W. L. Jepson
1918-8-3
7802
Lassen
near Buntingville (at Raker Ranch, Honey Lake Valley); Honey Lake Valley, at Raker Ranch
1219
Comment
CAS-BOT-BC389548
Silene nuda
David D. Keck
1944-7-8
5446
Lassen
Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir
1524
Comment
CHSC106672
Sisymbrium altissimum
B. Ignacio
2008-5-3
Lassen
Fort Sage Mountains.
1520
Comment
RSA152595
Sisymbrium altissimum
I. L. Wiggins, Dorothy Wiggins
1961-6-11
16333
Lassen
13.5 miles E of Susanville.
Comment
CHSC64775
Sisymbrium orientale
Vernon H. Oswald
1995-5-31
6803
Lassen
Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale.
1371
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
CDA38565
Sium
F. A. Taylor
1939-7-5
s.n.
Lassen
Bieber.
0
Comment
POM82470
Sium suave
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1219
Comment
NY821295
Solanum physalifolium
J. T. Howell
1973-8-1
50146 -A
Lassen
Near Susanville, Diamond Range
1585
Comment
CHSC106203
Solanum physalifolium var. nitidibaccatum
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
POM203787
Solanum triflorum
J. T. Howell
1934-6-10
11858
Lassen
3 miles N of Omira.
Comment
RSA0086585
Solanum xanti
Bonnie C. Templeton
1938-4-15
s.n.
Lassen
Near Roscoe.
Comment
CAS-BOT-BC365367
Solidago elongata
L. S. Smith
1918-8-11
1022
Lassen
Modoc National Forest. Camp One
Comment
CAS-BOT-BC365369
Solidago elongata
B. C. Cain
1925-8-24
78
Lassen
1 mi. below Drakesbad, Mt. Lassen Nat. Park
1645
Comment
CHSC59081
Solidago elongata
Vernon H. Oswald; Lowell Ahart
1992-8-25
5177
Lassen
Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Edge of meadow.
1950
Comment
JEPS32384
Solidago spectabilis
W. L. Jepson
1918-8-4
7812
Lassen
Horse Lake
1554
Comment
JEPS97325
Solidago velutina subsp. californica
Vernon H. Oswald
1995-8-21
7207
Lassen
T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely
1859
Comment
JEPS121251
Sonchus asper
Lowell Ahart
2013-7-22
18846
Lassen
W margin of duck field, about 50 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley.
Comment
CAS-BOT-BC158899
Sorbus scopulina
John Thomas Howell; Gordon H. True
1973-8-1
50151
Lassen
Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada
1584
Comment
CHSC64792
Sphaeralcea grossulariifolia subsp. grossulariifolia
Vernon H. Oswald
1995-6-7
6837
Lassen
Modoc Plateau. Rocky ridge on the n side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi east of Wendel, ne of Susanville.
1261
Comment
UC2042785
Sphaeromeria cana
Barbara Ertter with Gary Schoolcraft
1987-6-16
7192
Lassen
Skeedaddle Mountains on NE side of Honey Lake, on S side of Hot Springs.
Comment
CHSC93240
Sphaeromeria potentilloides var. potentilloides
John Dittes; Scott Chamberlain
2004-6-28
1013
Lassen
Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-miles east of Plumas County line; meadow.
1445
Comment
UCD136228
Sphaeromeria potentilloides var. potentilloides
G. Schoolcraft
2000-6-19
2905
Lassen
Flat southeast of Ravendale BLM Fire Station.
1645
Comment
UC21374
Sphenosciadium capitellatum
M. S. Baker and Frank Nutting
1894-7-28
Lassen
Bridge Creek
Comment
POM82495
Sphenosciadium capitellatum
Marcus E. Jones
1897-6-30
s.n.
Lassen
Susanville, 4 miles below Eagle Lake.
1524
Comment
SEINET7977004
Stachys rigida
C. G. Gulling
1905-1
s.n.
Lassen
Big Meadows.
Comment
HSC26818
Stanleya elata
D. H. Norris, T. Nelson, S. Dowty
1971-6-22
19286
Lassen
Along Hwy. 395, 4 mi. E of Standish
Comment
CAS-BOT-BC391078
Stellaria longipes subsp. longipes
Louella Bass
1973-5-29
87
Lassen
Elysian Valley
1325
Comment
CHSC5211
Stenotus acaulis
J. B. Kimsey
1946-6-17
Lassen
Mt. Fredonyer.
2377
Comment
UC86569
Stenotus acaulis
T. S. Brandegee
1892-7-2
Lassen
Near Susanville
Comment
CDA19745
Stenotus stenophyllus
D. Tillotson
1942-6-1
s.n.
Lassen
Modoc Plateau; Eagle Lake.
0
Comment
RSA252459
Stephanomeria exigua subsp. coronaria
R. F. Thorne, C. W. Tilforth
1969-9-6
39261
Lassen
C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake).
1280
Comment
UC1037278
Stephanomeria lactucina
Leo Whitney
1934-7-22
1747
Lassen
6 mi w Eagle Lake, lower end (near Antelope Mountain); Lassen National Forest
1889
Comment
JEPS28674
Stephanomeria tenuifolia
George W. Gillett
1957-7-26
901
Lassen
Butte Lake, point of rocks w of outlet an above trail Lassen Volcanic National Park
1844
Comment
CAS-BOT-BC375742
Stephanomeria virgata
Gary Schoolcraft
1985-9-4
1520
Lassen
Along Hwy 395 above Pauline's Risser, Tule Patch Spr.
1524
Comment
SEINET8061783
Stipa comata var. comata
P. B. Kennedy
1901-6-10
s.n.
Lassen
R.R. Station, Constantia
Comment
UC1140903
Stipa exigua
L. D. Whitney
1935-6-16
3272
Lassen
base Crater Mt.
Comment
UCD51436
Stipa thurberiana
A. A. Beetle; G. L. Stebbins Jr.
1942-5-30
3362
Lassen
10 miles NE of McArthur.
Comment
SEINET10523055
Stipa thurberiana
Billy Joe Cox, Paul Gallian
1971-6-2
Cox 2873
Lassen
Hallelujah Jct. intersection of US Hwy 395 & Calif. Hwy 70; in open waste area adjacent to Artemisia tridentata community.
1433
Comment
SEINET10966883
Stipa thurberiana
Paul Gallian, David B. Dunn
1971-6-2
Gallian 513
Lassen
6 mi. N. of Hallelujah jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash
1402
Comment
CHSC27669
Swertia albicaulis var. nitida
Robert A. Schlising
1978-7-9
3312
Lassen
S of Eagle Lake; forested area between Papoose Meadows and Eagle Lake Road.
Comment
RSA18164
Symphoricarpos acutus
C. B. Wolf
1929-9-1
3781
Lassen
Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake.
Comment
CAS-BOT-BC269700
Symphoricarpos mollis
Louella Bass
1973-6-23
132
Lassen
Elysian Valley
1325
Comment
CHSC67077
Symphoricarpos rotundifolius var. rotundifolius
Jeanne Boze
1981-6-12
120
Lassen
1/4 mi. south of Eagle Lake Field Station.
1615
Comment
UCR18738
Symphoricarpos vaccinioides
Frank C. Vasek
1975-7-11
750711- 26
Lassen
Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139
1829
Comment
CHSC52664
Symphyotrichum campestre
James D. Jokerst
1983-7-24
1885
Lassen
Near Madeline Plains.
1614
Comment
JEPS95902
Symphyotrichum frondosum
Lowell Ahart and Vernon H. Oswald
1999-9-13
8210
Lassen
just S of the parking area, about 1 mi S of the sign in station, Honey Lake Wildlife Area, 5 1/2 mi (air) SE of Standish
1207
Comment
UC1192071
Symphyotrichum frondosum
Verne Grant and Irving Schneider
1947-9-5
8375
Lassen
northwest shore of Eagle Lake by Sam Webb's place
Comment
CAS-BOT-BC98542
Symphyotrichum spathulatum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-6-28
49450
Lassen
Elysian Valley, west of Janesville - Sierra Nevada
1325
Comment
JEPS40821
Symphyotrichum spathulatum
Brown and Wieslander
1922-7-30
66
Lassen
Martin Sprs, Eagle Lake Eagle Lake
Comment
UC1924205
Symphyotrichum spathulatum
Debra Valov
2005-8-20
2005219
Lassen
Bieber; off County A2 c. 8 km east of Hwy 299
1271
Comment
SFV7757
Symphyotrichum spathulatum
T. Gordon, K. Kimbrough
1975-8-15
1211
Lassen
16 miles south of Adin.
1402
Comment
CAS-BOT-BC221914
Taeniatherum caput-medusae
John Thomas Howell
1976-7-19
51956
Lassen
On Gold Run Creek southwest of Susanville
1356
Comment
CAS-BOT-BC221916
Taeniatherum caput-medusae
Lee E. Wheeler
1960-6-15
s.n.
Lassen
Ca 4 mi SE/Susanville
Comment
CHSC71103
Tamarix parviflora
Vernon H Oswald; Lowell Ahart
1998-5-22
9096
Lassen
Hwy 395 at an intermittent drainage crossing the road 2.3 mi south of Milford.
1255
Comment
CHSC117508
Taraxacum officinale
Lowell Ahart; John Dittes
2016-7-13
21112
Lassen
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 southern slope of Big Valley.
1289
Comment
JEPS118448
Taraxacum officinale
Lowell Ahart, John Dittes
2011-6-20
17490
Lassen
About 30 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
CHSC60755
Taraxia subacaulis
Vernon H. Oswald; Lowell Ahart
1993-6-3
5479
Lassen
Champs Flat Rd. (Lassen 21/1.5, Forest 32N02), 4.0 mi N of Hwy 44, 0.3 mi NE of spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. In a meadow.
1731
Comment
JEPS31732
Taraxia tanacetifolia
C. S. Robinson
1927-6-25
38
Lassen
near Westwood Jct. (sw Lassen Co.); Lassen <National> Forest, Norval Flat
2051
Comment
UC128751
Taraxia tanacetifolia
Milo S. Baker
Lassen
near Eagle Lake
Comment
CDA18275
Tetradymia canescens
G. D. Barbe
1974-8-2
1941
Lassen
Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70.
1524
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
SEINET3391043
Tetradymia canescens
Lewis S. Rose
1934-7-23
34409
Lassen
Reno Junction.
1372
Comment
RSA94945
Tetradymia canescens
F. W. Peirson
1932-7-20
10354
Lassen
20 miles S of Susanville.
Comment
CAS-BOT-BC340063
Tetradymia glabrata
P. Monnet
1913-7-1
801 a
Lassen
Hot Springs Peak
1828
Comment
CHSC110308
Tetradymia glabrata
L. P. Janeway; B. Castro
2012-7-2
10928
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
CHSC33334
Tetradymia glabrata
Hank Thompson
1980-4-14
20
Lassen
Ca. 24 mi E of Susanville.
1402
Comment
CHSC31075
Tetradymia spinosa
J. S. White
1980-4-14
117
Lassen
1 mi ne of Wendel.
1295
Comment
UC36632
Tetradymia spinosa
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3341
Lassen
Honey Lake Valley
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-BC88053
Thelypodium crispum
John Thomas Howell
1934-6-10
11859
Lassen
3 miles north of Omira.
Comment
CAS-BOT-BC88079
Thelypodium flexuosum
Ethel S. Willits
1940-4-28
198
Lassen
In Lassen County south of Surprise Valley, Modoc County.
1371
Comment
NY215472
Thelypodium howellii subsp. howellii
A. Tiehm
1984-6-25
8826
Lassen
Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81.
1828.8
Comment
CAS-BOT-BC88107
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.
Comment
JEPS17734
Thelypodium integrifolium subsp. complanatum
Rimo Bacigalupi with G. T. Robbins
1955-7-21
5428
Lassen
1.3 mi w Nevada State line (Rush Creek, s of Smoke Creek Ranch Rd, 17.5 mi e of U.S. Hwy 395); Rush Creek
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
CHSC65302
Thlaspi arvense
Vernon H. Oswald; Lowell Ahart
1994-8-14
7197
Lassen
Modoc Plateau. Horse Lake Rd. (Lassen 536) 4.7 mi W of Hwy. 395, N of Susanville. At roadside between the road and the railroad.
1676
Comment
JEPS97308
Thlaspi arvense
Vernon H. Oswald and L. Ahart
1995-8-14
7197
Lassen
T33N R14E NE1/4 Sec. 22, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 4.7 mi W of Hwy. 395, N of Susanville
1676
Comment
RSA0039370
Thysanocarpus curvipes var. curvipes
Lowell Ahart
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
UC61148
Tiquilia nuttallii
J. Burtt Davy
Jun 17 1897-Jun 24 1897
Lassen
Amedee Honey Lake Valley, Amedee
Comment
CAS-BOT-BC377102
Tragopogon porrifolius
Ira L. Wiggins; Dorothy B. Wiggins
1961-6-11
16354
Lassen
2 miles E. of Susanville
Comment
JEPS124549
Tribulus terrestris
P. L. Billings
1965-7-12
114
Lassen
Pit River Over flow Bridge. #7-05, HWY 299. 1.8 mi from Nubiebur.
Comment
JEPS104431
Trichostema simulatum
Lowell Ahart
2003-8-17
10514
Lassen
On the w side of the paved road, on the e side of Highway 36, ca 1/4 mi sw of the Susan River, ca 8 mi (air) sw of Susanville.
1433
Comment
UCD117583
Trientalis latifolia
W. W. Robbins
1926-4-17
517
Lassen
Grass Valley.
Comment
UC16446
Trifolium breweri
M. S. Baker and Frank Nutting
1894-1
Lassen
Silver Lake
Comment
NY802652
Trifolium kingii var. productum
D. Isely
1971-7-12
11380
Lassen
Bogard Campground, Lassen National Forest, ca. 2 miles south state #44 (ca. 30 miles northwest of Susanville)
Comment
CHSC112395
Trifolium longipes subsp. hansenii
Lowell Ahart; John Dittes, Todd Sloat
2013-6-8
18775
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
UC80399
Trifolium longipes var. hansenii
T. S. Brandegee
1892-6-22
Lassen
Honey Lake
Comment
CHSC7672
Trifolium macrocephalum
Beverley J. Wise
1969-5-9
64
Lassen
7 mi. west of Susanville on north side of Hwy 36.
1493
Comment
JEPS94126
Trifolium macrocephalum
Vernon H. Oswald and Lowell Ahart
1998-5-22
9090
Lassen
Hwy. 36 between Fredonyer Summit and Susanville (0.4 mi. w. of the Susan R. and Bizz Johnston Trail)
1417
Comment
SEINET10487920
Trifolium macrocephalum
Jeffrey Huber
1971-6-2
Huber 105
Lassen
4 mi s of adin along calif hwy 139 in basalt clay, valley floor in artemesia.
1341
Comment
UCD111342
Trifolium macrocephalum
Earl Coke
1934-1
s.n.
Lassen
location unknown.
Comment
CAS-BOT-BC230741
Trifolium productum
M. S. Baker; Frank Nutting
1894-7-12
s.n.
Lassen
Pine Creek
Comment
CAS-BOT-BC230743
Trifolium productum
Marcus E. Jones
1897-6-28
s.n.
Lassen
Top of Diamond Mt., Susanville, Perkin's Ranch
2225
Comment
CHSC4835
Trifolium productum
R. Carter
1967-7-14
604
Lassen
Growing in shaded woods on n side of rd. Ca. 3.5 mi e Silver Lake between rd (31N07) and Susan River.
1828
Comment
CHSC5294
Trifolium productum
M. West
1946-7-12
Lassen
Silver Lake.
1981
Comment
SEINET3131901
Trifolium productum
M. E. Jones
1897-6-28
sn
Lassen
Top of Mt. Diamond, Susanville, Perkin's Ranch
2225
Comment
CHSC5072
Trifolium repens
D. L. Stites
1967-7-1
95
Lassen
Ca. 10 mi se of Eagle Lake Biology Station, Lower Murrer's Meadow.
1371
Comment
NY717612
Trifolium variegatum
N. H. Holmgren
1980-7-4
9495
Lassen
Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale
1680
Comment
UCD109410
Trifolium variegatum var. major
K. M. Meyer; A. Townesmith
2007-7-21
144
Lassen
Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A21.
1920
Comment
POM27840
Trifolium variegatum var. variegatum
Marcus E. Jones
1897-6-18
7442
Lassen
Chat. [also Chats, a former settlement]
1524
Comment
POM27706
Trifolium wormskioldii
Marcus E. Jones
1897-6-24
s.n.
Lassen
10 to 15 miles west from Amedee.
1220
Comment
UCD109955
Trifolium wormskioldii
L. Whitney
1933-8-9
s.n.
Lassen
Slate Cr. Lassen Forest.
1920
Comment
UC483
Triglochin maritima
J. Burtt Davy
Jun 17 1897-Jun 24 1897
3331
Lassen
Honey Lake Valley
1219
Comment
CHSC60928
Triglochin scilloides
Vernon H. Oswald; Lowell Ahart
1993-7-8
5645
Lassen
Pittville Rd. (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. Beds of drainages and pools in meadow.
1709
Comment
SBBG68581
Triphysaria eriantha subsp. eriantha
E. Rockwell
-Jun-1925
Lassen
Eagle Lake
1554
Comment
CAS-BOT-BC193529
Trisetum spicatum
Clare B. Hardham
1971-8-22
18419
Lassen
Diamond Mountain
2346
Comment
SD131701
Triteleia hyacinthina
Arnold Tiehm, Jan Nachlinger, Margaret Williams
1988-6-2
11705
Lassen
East side of Snowstorm Mountain, 18.1 road miles north of the Wendel Road on Highway 395 from Susanville to Alturas. Growing along moist draws.
1402
Comment
SEINET8502690
Triteleia hyacinthina
A. Tiehm, J. Nachlinger, M. J. Williams
1988-1
11705
Lassen
E side of Snowstorm Mountain, 18.1 road miles N of the Wendel Road on Hwy 395 from Susanville to Alturas.
1400
Comment
UC1241777
Typha latifolia
Verne Grant and Irving Schneider
1947-8-1
8231
Lassen
s Cross Hills (near State Fish and Game nesting area, Madeline Plain); s of Cross Hills, Madeline Plain
Comment
UC1241787
Typha latifolia
Malcolm A. Nobs and S. Galen Smith
1949-8-20
1474
Lassen
nw shore Honey Lake (Honey Lake Valley, one mi s of Milford); Honey Lake Valley
Comment
CHSC27655
Urtica dioica subsp. holosericea
George Deniso
1978-7-24
102
Lassen
Near Miner's point, SE end of Eagle L.
1584
Comment
HSC95256
Utricularia macrorhiza
Gordon Leppig, Kai Neander, Juli Neander
1997-7-25
683
Lassen
Modoc National Forest, Blue Lake Ranch
1970
Comment
CHSC66248
Utricularia minor
Vernon H. Oswald; Lowell Ahart
1996-6-24
7869
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
CHSC96702
Utricularia vulgaris
Gordon Leppig; J. Cromwell
1997-7-27
612
Lassen
Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex.
1970
Comment
CAS-BOT-BC528860
Veratrum californicum
John Thomas Howell; Gordon H. True; Margaret Williams
1973-5-12
49218
Lassen
Sierra Nevada, Elysian Valley northwest of Janesville
1325
Comment
POM110333
Veratrum californicum
Marcus E. Jones
1897-6-28
s.n.
Lassen
Susanville, Perkins Ranch
1463
Comment
SEINET9186959
Verbena bracteata
G. Schoolcraft
1998-8-4
2800
Lassen
Along Hwy 395 berm.
1341
Comment
CHSC36456
Veronica americana
Susan H. Euing
1982-6-4
10
Lassen
Ca. 50 yds along Willow Creek e of road to Murrers Upper Meadow.
Comment
CHSC7758
Veronica americana
Beverly J. Wise
1969-5-18
112
Lassen
18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215.
1554
Comment
RSA523846
Veronica catenata
L. R. Heckard, Peter Rubtzoff
1971-8-3
2702
Lassen
1.3 miles west of Pit River bridge at Bieber. Along Pit River overflow at bridge 7-03.
1220
Comment
UC1023721
Veronica peregrina subsp. xalapensis
Francis W. Pennell
1940-6-9
25757
Lassen
4 mi s of Madeline (Route 395)
1615
Comment
CHSC66734
Veronica scutellata
Vernon H. Oswald; Lowell Ahart
1996-8-1
8113
Lassen
Mountain Meadows Reservoir SW of Westwood.
1539
Comment
CHSC75500
Vicia americana var. americana
Vernon H. Oswald; Lowell Ahart
1999-6-9
9755
Lassen
Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030.
1347
Comment
NY716243
Vicia americana var. americana
R. M. Austin
06 1898
2221
Lassen
Madaline plains
Comment
RSA716040
Vicia americana var. americana
L. Ahart
2005-6-1
11866
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
UC1142998
Vicia americana var. americana
August L. Hormay
1934-7-10
Lassen
Black's Mtn. Headquarters; Lassen National Forest
1706
Comment
UC1583957
Vicia americana var. americana
G. Schoolcraft
1990-5-16
2053
Lassen
about 1 mi w Muck Valley
1280
Comment
CHSC4833
Viola bakeri
R. Carter
1967-7-14
598
Lassen
S side of rd. 3.5 mi e of Silver Lake between rd (31NO7) and Susan River.
1828
Comment
CHSC61185
Viola beckwithii
Vernon H. Oswald; Lowell Ahart
1993-5-12
5379
Lassen
Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood).
Comment
UCD110898
Viola lobata
H. Frederick
1925-7-28
s.n.
Lassen
Mt. Lassen.
Comment
RSA412739
Viola purpurea subsp. integrifolia
Christopher Davidson
1975-6-7
2728
Lassen
2.1 mi W of Westwood on Hwy 36.
1555
Comment
UC1542942
Viola purpurea subsp. venosa
G. Schoolcraft
1987-4-29
1687
Lassen
Ash Valley RNA Ash Valley
1554
Comment
SEINET10524616
Vulpia megalura
Douglas G. LeDoux, David B. Dunn
1973-5-25
LeDoux 892
Lassen
Collected 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds.
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
UC1533161
Vulpia microstachys var. microstachys
G. Schoolcraft
1986-5-19
1573
Lassen
n slope Bald Mt.
1280
Comment
CHSC4865
Wyethia
R. Carter
1967-7-7
581
Lassen
Collected ca. 20 yds from E shore of small resevoir, dry forest. Deans Meadow.
Comment
JEPS32044
Wyethia mollis
Hilda W. Grinnell
1934-6-1
Lassen
1 mi w Susanville
1341
Comment
UC1070500
Wyethia mollis
A. Simontacchi
1940-7-27
767
Lassen
6.7 mi e Smoky Cabin; Lassen National Forest, Halls Flat Quadrangle
Comment
UC1137288
Wyethia mollis
K. E. Bradshaw
1939-5-27
240
Lassen
n end of plot Lassen National Forest, Black Mountain E. F. Plot 39-1
1767
Comment
CAS-BOT-BC383490
Wyethia mollis
George W. Gillett
1957-7-29
957
Lassen
Lassen Volcanic National Park. Snag Lake. Dry slopes near the Butte Lake trail above Snag Lake
1859
Comment
RSA772869
Zannichellia palustris
Robert F. Thorne, Larry E. DeBuhr
1975-8-22
47203
Lassen
Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line
1616
Comment
RSA122229
Zigadenus paniculatus
L. R. Short, J. Warren
1936-6-12
S- 434
Lassen
Lassen Forest, Burgess Spr. Exp. Range
1845
Comment
SEINET8520464
Zigadenus paniculatus
H. Durio
1979-1
Lassen
Comment