Search Results — 2000 specimen records retrieved (1614 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.

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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
  CHSC23488  Abies concolor Wayne O. Baum 1971-7-16 71 -73 Lassen E. slope of Gallatin Peak. 2072 Comment
  SEINET7893918  Acer macrophyllum E. Brooks 1927-5-9 s.n. Lassen 80 miles N of Reno. Comment
  CHSC4909  Achillea millefolium A. E. Anderson 1967-7-1 67 Lassen Along fence n of road to Murrer Ranch, 1 mi. from ranch buildings. 1371 Comment
  UC1136757  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-14 F 275 Lassen Patterson Flat 1737 Comment
  UC1136759  Achillea millefolium L. R. Short and Wm. Gansberg 1936-7-9 S 483 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1804 Comment
  UC1537057  Achillea millefolium Gordon H. True Jr. 1936-6-22 524 Lassen se of, near edge of slough Litchfield; Honey Lake Valley 1219 Comment
  UCD51450  Achnatherum X bloomeri Howard Gebel 1966-6-14 s.n. Lassen Belfast tableland. 1341 Comment
  CHSC30608  Achnatherum hymenoides R. C. Abbott 1975-6-17 3 Lassen 18.5 m w of road to Lassen Co youth camp, directly e of Eagle Lake Field Station. 1554 Comment
  RSA129148  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen Near Johnstonville. 1280 Comment
  UC1131588  Achnatherum hymenoides E. Sawyer 1935-6-27 232 Lassen Long Valley Sierraville Quadrangle Comment
  UCD55573  Achnatherum hymenoides Beecher Crampton 1964-6-27 7090 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  CAS-BOT-BC210661  Achnatherum lemmonii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50644 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC210663  Achnatherum lemmonii John Thomas Howell 1976-7-19 51980 Lassen On Gold Run Creek southwest of Susanville 1386 Comment
  UC1024755  Achnatherum lemmonii Leo Whitney 1933-7-15 2297 Lassen 25 mi w of upper end of Eagle Lake (Hall's Flat); Lassen National Forest 1737 Comment
  UC1137759  Achnatherum lemmonii August L. Hormay 1934-5-15 Lassen e Eldrige's; Lassen National Forest 1524 Comment
  UCD18958  Achnatherum lemmonii Jack N. Reppert 1965-7-13 18 Lassen Lassen National Forest, Harvey Valley Allotment-Logan Springs. 1706 Comment
  UCD50563  Achnatherum lemmonii B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD50795  Achnatherum nelsonii John Thomas Howell 1976-7-20 52026 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass, Lassen County. 1432 Comment
  UCD54017  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-8-1 50069 Lassen Canadian Zone forest, east slope of Diamond Range south of Susanville, Lassen County. 2362 Comment
  SEINET7593424 Image available Achnatherum occidentale John Thomas Howell 1934-1 12431 Lassen Hall's Flat Comment
  POM115575  Achnatherum occidentale subsp. occidentale Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 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
  UC1024959  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-24 3303 Lassen ca. 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UCD32668  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-6 2069 Lassen Lassen County, 1 mile east of Johnstonville, along US highway 1395. 1219 Comment
  CAS-BOT-BC218009  Achnatherum thurberianum Louella Bass 1973-5-25 EU 42 Lassen Elysian Valley 1325 Comment
  SEINET235298 Image available Achnatherum thurberianum R. B. Turner 1980-5-18 Lassen Hwy 139 1 miles N of Susanville. 1463 Comment
  CAS-BOT-BC217994  Achnatherum webberi John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50679 Lassen Summit ridge of Diamond Mountain 2346 Comment
  CHSC27639  Acmispon americanus var. americanus George Deniso 1978-7-16 77 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  JEPS127283  Acmispon americanus var. americanus Lowell Ahart, John Dittes 2016-7-13 21119 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS60355  Aconitum columbianum Brown and Wieslander 1922-7-30 19 Lassen Eagle Lake, Martin Springs Comment
  CAS-BOT-BC391607  Actaea rubra John Thomas Howell; Gordon H. True 1973-8-1 50164 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC65107  Agastache parvifolia Vernon H. Oswald 1995-7-24 7132 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  SEINET10499368  Agastache parvifolia Mary Merello 1993-6-28 Merello 746 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UCD124873  Agastache parvifolia John F. Sorenson 1986-7-5 s.n. Lassen 9 miles southeast of Termo, Bailey Creek drainage; Bailey Creek above Bailey Reservoir. Comment
  SEINET10669171  Agoseris Jeffrey Huber 1971-6-2 Huber 123 Lassen Approx. 30 mi. N of Susanville, on CA Hwy. 139, in basalt; Pinus-Artemisia-Juniper Assoc. 1646 Comment
  JEPS107469  Agoseris glauca var. glauca Lowell Ahart, John Dittes 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS94999  Agoseris heterophylla Vernon Oswald and Lowell Ahart 1997-6-24 8601 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  OBI77284  Agoseris heterophylla Anthony Baniaga 2011-6-17 354 Lassen Lassen NF. N side of Hog Flat Reservoir. Pegleg Mtn quad T30N R10E sec 19 NE of NE 1678 Comment
  RSA416397  Agoseris heterophylla Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC29359  Agoseris heterophylla var. heterophylla M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. 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
  CAS-BOT-BC13230  Agoseris monticola Margaret Williams 1974-8-4 74 -L-79 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  UC773915  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  HSC100160  Agropyron cristatum J. P. Smith, & J. O. Sawyer 2011-8-14 13375 Lassen Ramhorn Campground. 1383 Comment
  UCR244067  Agropyron cristatum Jim Andre, G. L. Clifton 1993-6-9 19693 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
  UCD32657  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  SEINET7297772 Image available 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
  CAS-BOT-BC127238  Agrostis exarata Malcom A. Nobs; S. Galen Smith 1949-7-21 1057 Lassen 4 miles north of Madeline. Comment
  CAS-BOT-BC127240  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50226 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  UC1567418  Agrostis pallens G. Schoolcraft 1989-7-18 1978 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  RSA87452  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  JEPS123839  Agrostis stolonifera Lowell Ahart, John Dittes 2015-7-14 20335 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC77261  Agrostis variabilis G. Schoolcraft 1997-8-6 2662 Lassen Dimond Mtn. 2316 Comment
  CAS-BOT-BC267060  Alisma John Thomas Howell 1974-7-10 50546 Lassen Elysian Valley 1325 Comment
  UC985665  Alisma gramineum Malcolm A. Nobs and S. Galen Smith 1949-7-22 1074 Lassen marshes along Willow Creek (10 mi n of Susanville); Willow Creek Valley Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 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
  UCR45852  Allium acuminatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6026 Lassen Ash Valley, along branch road off Adin-Madeline Road just south of bridge over Ash Creek, & c. 16 mi. SE of Adin; 2.5 mi. SE of junction with main road 1555 Comment
  CAS-BOT-BC459571  Allium acuminatum H. C. Cantelow 1940-5-31 s.n. Lassen 4 miles east of Mc Arthur, Highway 299 Comment
  SEINET194965  Allium acuminatum A. A. Heller 1938-1 Lassen 0 Comment
  UCD150395  Allium acuminatum Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  UC119964  Allium amplectens T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS94130  Allium anceps Vernon H. Oswald and Lowell Ahart 1998-5-22 9102 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
  SEINET10532611  Allium anceps Paul Gallian, David B. Dunn 1971-6-2 Gallian 516 Lassen 6 miles n of hallelujah jct. On u.s. Hwy. 395, In artemisia tridentata, pinyon Pine along high ridge and in sandy wash 1402 Comment
  CHSC27661  Allium campanulatum Robert A. Schlising 1978-7-1 3302 Lassen S of Eagle Lake at E side of Mahogany Lake. 2060 Comment
  POM110223  Allium campanulatum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS26135  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spring Experiment Range 1798 Comment
  UC1133850  Allium lemmonii A. Simontacchi 1940-6-4 805 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC470923  Allium lemmonii B. Bartholomew; B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC470925  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile west of Bieber Comment
  HSC47288  Allium lemmonii Dale McNeal 1978-5-30 2129 Lassen Beside Hwy. 395, 1.9 mi. S of Ravendale Comment
  CAS-BOT-BC474046  Allium parvum Louella Bass s.n. Lassen Elysian Valley Comment
  CAS-BOT-BC171316  Alnus incana subsp. tenuifolia John Thomas Howell; Gordon H. True 1973-8-1 50223 Lassen Headwaters of Boxter Creek, Canadian Zone forest, E slope of Diamond Range s of Susanville. Sierra Nevada Comment
  CHSC58861  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1992-7-16 5108 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  JEPS87183  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  RSA129209  Alopecurus aequalis Alice Yates 1936-8-11 6068 Lassen Baxter Creek; Susanville 1280 Comment
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  CAS-BOT-BC138162  Alopecurus aequalis var. aequalis John Thomas Howell 1975-7-23 51388 Lassen Sierra Nevada. Susanville. 1295 Comment
  JEPS127279  Alopecurus carolinianus Lowell Ahart, John Dittes 2016-7-13 21142 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
  RSA125344  Alopecurus geniculatus P. H. Raven, Otto T. Solbrig 1958-6-17 13299 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  SEINET200168  Alopecurus geniculatus M. A. Nobs, SG Smith 1949-5-29 764 Lassen 2 mi E of Adin 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
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. 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
  CDA23696  Amaranthus blitoides S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  JEPS117361  Amaranthus blitoides Lowell Ahart, John Dittes 2010-8-30 17090 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  JEPS124370  Amaranthus californicus Lowell Ahart, John Dittes 2015-7-13 20317 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC42891  Ambrosia acanthicarpa Margaret Williams; Steven Williams 1974-7-26 74 -L-10 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC77181  Ambrosia acanthicarpa G. Schoolcraft 1998-9-14 2809 Lassen Flats N of Turtle Point. 1264 Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 Comment
  POM253370  Amelanchier pallida A. A. Heller 1938-6-4 15144 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  RSA38467  Amelanchier pallida Philip A. Munz 1947-5-19 11859 Lassen Fredonyer Forest Camp Ground on Hwy 36 W of Susanville. 1509 Comment
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  SEINET3872064  Amphiscirpus nevadensis Richard R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake.; 0 1559 Comment
  CDA40473  Amsinckia menziesii var. menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  UC198379  Amsinckia tessellata var. tessellata J. G. Lemmon Lassen Sierra and Long Valleys Comment
  UC61145  Amsinckia tessellata var. tessellata Jos. Burtt Davy Lassen Honey Lake Valley Awadee Comment
  CHSC5192  Anaphalis margaritacea 1944-7-19 Lassen Juniper Lake. 2055 Comment
  UCD159573  Anaphalis margaritacea D. S. Park 2011-6-27 310 Lassen East of Westwood. Growing near Willard Creek. 1700 Comment
  CHSC71068  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9134 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  JEPS29744  Anisocoma acaulis Rimo Bacigalupi and L. R. Heckard 1962-5-29 8499 Lassen 2.7 mi n of Milford, along US Hwy 395 1219 Comment
  CAS-BOT-BC63953  Antennaria argentea Clare B. Hardham 1969-8-28 17453 C. Lassen West of Janesville Comment
  UCR7842  Antennaria argentea Marilyn Malin 1968-6-27 256 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 Comment
  SEINET6735052 Image available Antennaria corymbosa B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11496 Lassen Blue Door Flat, seven or eight miles east of HWY 295 on county road 510 1774 Comment
  CHSC108021  Antennaria dimorpha Lowell Ahart; John Dittes 2011-6-20 17508 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
  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
  HSC69048  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Schaffer Mtn. about 1/2 mile west of Hwy. 395 1463 Comment
  JEPS100336  Antennaria geyeri Dean W. Taylor 2001-7-19 17842 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  UC773955  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Burgess Spring Experiement Range 1828 Comment
  CAS-BOT-BC69140  Antennaria geyeri Clarence R. Quick 1964-7-29 64 -89 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CAS-BOT-BC58692  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen East of Westwood Comment
  CDA10077  Antennaria luzuloides L. Ahart, J. Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  UC506930  Antennaria luzuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 241 Lassen below Patterson R. S.; Lassen National Forest 1737 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
  CHSC66233  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1996-6-24 7857 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
  CAS-BOT-BC77283  Antennaria microphylla Clare B. Hardham 1969-8-28 17453 B Lassen West of Janesville Comment
  UC1609112  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-14 5506 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  UCD128940  Antennaria rosea Beecher Crampton 1960-6-18 5712 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD159578  Anthemis cotula D. S. Park 2011-8-24 315 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  CHSC117548  Apera interrupta Lowell Ahart; John Dittes 2016-7-13 21143 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 (air) miles east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS120872  Apera interrupta Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18733 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
  UC1523746  Apera interrupta Gary Schoolcraft 1981-6-8 618 Lassen s of Beaver Creek 1249 Comment
  CHSC4823  Apocynum androsaemifolium R. Carter 1967-7-21 624 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Dramond Mountains. Comment
  CHSC6221  Apocynum androsaemifolium W. Vinyard 1946-6-17 Lassen Eagle Lake, summit of Mt. Fredonyer. 2349 Comment
  CHSC66370  Apocynum androsaemifolium Vernon H. Oswald; Lowell Ahart 1996-6-17 7777 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1432 Comment
  JEPS49800  Apocynum androsaemifolium Brown and Wieslander 1922-7-17 3 Lassen Eagle Lake, Martin Springs Comment
  UCD21048  Apocynum androsaemifolium E. Bortiri 2002-7-19 WFC 84 Lassen Along Rd 35N08, about 8 miles North of Poison Lake and Hwy 44,. Comment
  CHSC75442  Apocynum cannabinum Vernon H. Oswald; Lowell Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. 1356 Comment
  POM75751  Apocynum pumilum var. rhomboideum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC392211  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  CAS-BOT-BC392213  Aquilegia formosa Lassen 1927 G. S. Crew 1927-7-15 79 Lassen Lassen National Forest. Bogard R.S. 1725 Comment
  POM99591  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  RSA0129285  Arabis holboellii var. pinetorum R. C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake. 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
  NY119564  Arabis sparsiflora var. sparsiflora D. W. McNeal 1983-6-5 2842 Lassen Above co. rd. #201 above the N shore of Eagle Lake, 2.9 miles W of the jct. of Hwy. 139. Comment
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  HSC67173  Arctostaphylos patula J. P. Smith, J. O. Sawyer 1972-5-6 5238 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
Read comments
Apr 29 2013
  HSC7705  Arctostaphylos patula L. H. Myers 1963-4-14 39 Lassen Janesville grade road, ca. 3 mi. S of Janesville Comment
  UC549426  Arctostaphylos patula F. Farris 1934-12-30 Lassen Diamond Mt. 1524 Comment
  UCD53307  Arctostaphylos patula Beecher Crampton 1964-1-26 7080 Lassen Ca. 35 miles NW of Susanville. 2042 Comment
  CHSC72309  Arenaria aculeata L. P. Janeway; Glenn Clifton 1998-7-9 5738 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  RSA700049  Arenaria congesta L. P. Janeway 2001-6-20 7191 Lassen High Cascade Range. South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. High Cascade Range., South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  UCR18731  Arenaria congesta Frank C. Vasek 1975-7-11 750711- 07 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  JEPS46143  Arenaria congesta var. congesta Duncan Dunning 1921-8-19 Lassen 3 m s Antelope Mountain (south and west of Eagle Lake. East tributary of Pine Creek.); Martin Spring, Pine Creek Comment
  UC1136825  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 2223 Lassen Lassen Forest 1728 Comment
  CDA23999  Arenaria congesta var. crassula T. C. Fuller 1963-6-11 10661 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  UC465891  Arenaria congesta var. subcongesta Franklin P. Nutting Lassen Dixey Valley Comment
  UCR71437  Arenaria congesta var. subcongesta Barbara Ertter, Gary Schoolcraft 1987-6-16 7193 Lassen Skeedaddle Mtns, NE side of Honey Lake; saddle on E side of Hot Springs Peak 2195 Comment
  UCR244034  Arenaria congesta var. suffrutescens Jim Andre, G. L. Clifton 1993-6-3 19704 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  CHSC68857  Arenaria kingii var. glabrescens Vernon Oswald; Lowell Ahart 1997-6-24 8633 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CAS-BOT-BC401656  Argemone munita subsp. munita Margaret Williams; Steven Williams 1974-7-26 74 -L-11 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC401789  Argemone munita subsp. rotundata Alice Eastwood; John Thomas Howell 1940-6-16 8337 Lassen Near Susanville Comment
  HSC16736  Argemone munita subsp. rotundata M. T. Milligan 1964-7-17 147 Lassen 2 mi. N on main road from Eagle Lake General Store 1677 Comment
  JEPS124519 Image available Argemone platyceras var. hispida P. C. Billigs 1965-7-12 77 Lassen 1.8 mi south of MIlford on Hwy 395 Comment
  JEPS35877  Arnica chamissonis C. S. Robinson 1927-7-15 77 Lassen Feather Lake, sw Lassen Co Feather Lake 1737 Comment
  UC1776710  Arnica chamissonis G. Schoolcraft 1997-8-1 2385 Lassen About 2 miles W of Boot Lake 2255 Comment
  UC507003  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 194 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  UCD129113  Arnica chamissonis Chandler V. Jensen 1962-7-1 s.n. Lassen north of Susanville, Secret Valley near Said Reservoir. Comment
  POM29781  Arnica cordifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC1137700  Arnica cordifolia A. Simontacchi 1940-5-21 764 Lassen 4.6 mi sse of Blacks Mtn.; Hall Flat Quad. 1737 Comment
  OBI75878  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 SW of SW 1500 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
  UC485811  Arnica dealbata H. E. and S. T. Parks June 1928 236 Lassen Drakesbad Lassen National Park Comment
  CHSC115054  Arnica fulgens J. Moeller; S. Puentes 2008-5-14 Lassen DFG OCC #13. Along 33N02 Harvey Valley Road off HW 44, ~5.8 air miles east of Poison Lake. 1735 Comment
  JEPS109911  Arnica fulgens Dean W. Taylor 2007-6-14 20128 Lassen Upper Gooch Valley, Forest Road 35N05 (County Road 22) 0.3 miles north of junction with Forest Road 34N45 1889 Comment
  JEPS35883  Arnica mollis Frances D. Payne 1929-7-12 99 Lassen Upper Silver Creek, se extremity of Warner Mts Warner Mountains, Upper Silver Creek 2499 Comment
  CAS-BOT-BC85030  Arnica sororia E. B. Babcock; G. L. Stebbins 1936-6-8 1788 Lassen Gentle north facing slope of hillside, 2 miles north of Madeline. 1371 Comment
  UCR18724  Arnica sororia Frank C. Vasek 1975-7-11 750711- 09 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  SEINET3358258 Image available Artemisia arbuscula A. A. Beetle 1957-8-16 12763 Lassen Between Susanville and Johnstonville. Comment
  UCD129188  Artemisia arbuscula F. C. Raney 1966-6-25 s. n. Lassen Harvey Valley, Lassen National Forest. Comment
  CHSC72214  Artemisia arbuscula subsp. arbuscula Vernon H. Oswald 1998-9-14 9621 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  RSA359361  Artemisia arbuscula subsp. arbuscula L. M. Shultz, John Shultz 1985-6-23 8603 Lassen 41 miles north of Susanville on Hwy 395. 1433 Comment
  SD117633  Artemisia arbuscula subsp. arbuscula Jack L. Reveal 1984-8-15 2842 Lassen Along highway 44, ca. 19 miles north of Susanville 1584 Comment
  CHSC77184  Artemisia arbuscula subsp. thermopola G. Schoolcraft 1997-8-6 2659 Lassen Diamond Mtn. 2316 Comment
  UCD129263  Artemisia biennis Malcolm A. Nobs; Galen Smith 1949-8-20 1482 Lassen Long Creek, 1 mile north of Doyle, Honey Lake Valley. Comment
  CHSC72215  Artemisia cana subsp. bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-14 9622 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  SDSU6174  Artemisia cana subsp. bolanderi D. F. Howe 1966-8-25 4302 Lassen 41 miles south of Alturas on #395. 1676 Comment
  CAS-BOT-BC84828  Artemisia cana subsp. cana Ernest C. Twisselmann 1961-7-21 6572 Lassen Harvey Valley 1981 Comment
  JEPS28717  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen near Butte Lake Trail (above Snag Lake); Lassen Volcanic National Park 1859 Comment
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Aug 23 2012
  CHSC111259  Artemisia ludoviciana subsp. ludoviciana L. P. Janeway; B. Castro 2012-7-2 10934 Lassen Modoc Plateau. Along Skedaddle Ranch Road 6.4 road km north of Skedaddle Creek at an unnamed tributary of Bull Creek. 1533 Comment
  JEPS97304  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald and L. Ahart 1995-8-14 7196 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  SEINET10722478  Artemisia ludoviciana subsp. ludoviciana Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 134 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  UC1537358  Artemisia ludoviciana subsp. ludoviciana Gordon H. True 1937-7-10 783 Lassen Bull Flat Refuge 1Q, Bull Flat 1524 Comment
  SEINET263201  Artemisia nova J. Lyman 1994-4-23 4242 Lassen Along Highway 395, ca. 25 miles north of Susanville on intersecting BLM road 1433 Comment
  CHSC13797  Artemisia tridentata Cathy Crittenden 1970-7-8 28 Lassen Approx. 100 yds north of E. L. B. S. 1524 Comment
  CHSC42148  Artemisia tridentata C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi SE of Madeline and 9 mi NE of Termo. 2194 Comment
  CAS-BOT-BC97324  Artemisia tridentata subsp. tridentata Margaret Williams; Steven Williams 1974-7-26 74 -L-4 Lassen area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS37010  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7819 Lassen Madelin Plains 1615 Comment
  SEINET3397751  Artemisia tridentata subsp. tridentata Unknown 1994-1 s.n. Lassen 15 mi. N. of Litchfield Comment
  UC1136979  Artemisia tridentata subsp. tridentata L. R. Short 1936-9-30 S- 505 Lassen MDM, Burgess Spr. Exp. Range Lassen National Forest, MDM, Burgess Spr. Exp. Range 1752 Comment
  UC773962  Artemisia tridentata subsp. vaseyana L. R. Short 1936-9-30 S- 505 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1752 Comment
  JEPS124637 Image available Artemisia vulgaris Dixie Funnell 1965-7-13 137 Lassen Growing under bridge about 4 feet from the water. Highway 299, under bridge 705 for pit overflow. 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
  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
  RSA252999  Aster alpigenus A. A. Heller 1937-9-1 15343 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  RSA504836  Aster modestus Bruce Bartholomew, B. Anderson 1988-7-22 4499 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
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Jan 31 2013
  UCR73175  Astragalus G. L. Webster 1989-5-13 7710 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA624916  Astragalus B. J. Cox, Paul Gallian 1971-6-2 2599 Lassen Hallelujah Jct. intersection of U.S. 395 and Hwy 70. Comment
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Jan 15 2016
  POM204051  Astragalus accidens var. hendersonii J. T. Howell 1934-6-10 11875 Lassen Janesville Comment
  CAS-BOT-BC177432  Astragalus andersonii John Thomas Howell 1934-6-10 11875 Lassen Janesville Comment
  CAS-BOT-BC177438  Astragalus andersonii Alice Eastwood; John Thomas Howell 1940-6-16 8351 Lassen Omira Comment
  NY791370  Astragalus andersonii A. J. Cronquist 1959-6-16 8453 Lassen 25 miles northwest of Reno Comment
  NY674058  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1646 Comment
  NY797390  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1645.9 Comment
  CAS-BOT-BC178766  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. east of Madeline Plains. 1712 Comment
  RSA614427  Astragalus canadensis var. brevidens Richard Halse 1991-7-28 4247 Lassen along Hwy 139, NE end of Eagle Lake, 21 miles N of Susanville. 1558 Comment
  UCD53891  Astragalus canadensis var. brevidens A. M. Shapiro 2005-6-10 s.n. Lassen 1 mi. SE Beckwourth Pass. 1524 Comment
  SFV1777  Astragalus curvicarpus I. L. Wiggins, D. B. Wiggins 1961-6-11 16331 Lassen 13.5 miles east of Susanville. 1240 Comment
  HSC69613  Astragalus curvicarpus Gary Schoolcraft 1979-6-19 77 Lassen Just N of West Painter Flat Rd. intersection. 1720 Comment
  RSA60316  Astragalus curvicarpus E. K. Balls 1950-5-9 15949 Lassen 6 miles south of Doyle, Hwy 395. 1372 Comment
  SEINET5325008  Astragalus curvicarpus F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  CHSC60899  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Edge of woods between the road and railroad. 1709 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
  UC1609459  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111,36N01) 1.9 mi n of Hwy 44 on the se edge Poison Lake; se edge Poison Lake 1709 Comment
  SEINET12165120  Astragalus curvicarpus var. curvicarpus N. H. Holmgren, Holmgren, P. K. 1980-1 9504 Lassen Observation Peak, S side of Mt, 11 mi airline distance E of Ravendale, T34N R16W S34 1890 Comment
  CAS-BOT-BC182960  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi. s of Constantia 1402 Comment
  CHSC37683  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  UC1583579  Astragalus filipes G. Schoolcraft 1990-6-13 2093 Lassen in John's Valley about 4 mi s Nubierber; s of Nubieber in John's Valley 1371 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
  RSA111070  Astragalus filipes H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5675 Lassen South of Constantia. 1463 Comment
  RSA639010  Astragalus filipes Michael A. Vincent 1999-6-9 8579 Lassen Bureau of Land Management land, Madeline Plains: SW of US Rt 395, SE of CR 515 (Termo road), S of BLM road 1614, and SW of Termo. Along jeep road to Schott Canyon. 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
  NY674273  Astragalus gibbsii G. Schoolcraft 1982-7-20 806 Lassen Wagner Canyon, east of McKesick Peak 1524 Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  CAS-BOT-BC186942  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west of Amedee 1219 Comment
  CAS-BOT-BC229048  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  NY675509  Astragalus lentiginosus var. chartaceus H. D. D. Ripley 1943-6-14 5744 Lassen Hidden Valley east of Susanville 1311 Comment
  POM25710  Astragalus lentiginosus var. floribundus Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  NY675585  Astragalus lentiginosus var. floribundus H. D. D. Ripley 1943-6-13 5678 Lassen North of Doyle 1265 Comment
  CHSC5280  Astragalus lentiginosus var. lentiginosus 1926-6-1 Lassen Buck's Point, Eagle Lake. 1615 Comment
  CHSC60900  Astragalus lentiginosus var. lentiginosus Vernon H. Oswald 1993-7-8 5663 Lassen Pittvile Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  UC13406  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-31 Lassen near Pine Creek; near Pine Creek Comment
  CHSC107323  Astragalus lentiginosus var. salinus Lowell Ahart; John Dittes 2011-6-20 17510 Lassen Forest floor, near the edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin. 1511 Comment
  UC65741  Astragalus pulsiferae P. B. Kennedy 1901-6-10 Lassen R.R. Station Constantia (Constantia) Comment
  CHSC83400  Astragalus pulsiferae var. coronensis R. Ondricek-Fallscheer 1999-7-9 201 Lassen About 11 air mi SE of Adin; E edge of Hunsinger Flat Rd. (USFS Rd. 38N04), 1.0 road mi south of jct. with USFS Rd. 39N08. 1600 Comment
  SEINET240400  Astragalus pulsiferae var. coronensis S. L. Welsh, ND Atwood 2001-6-14 28150 Lassen E of Hwy 395, road to Rams Horn Spring campground 1540 Comment
  CAS-BOT-BC192854  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen East side of Beckwourth Pass 1493 Comment
  JEPS107291  Astragalus pulsiferae var. pulsiferae Lowell Ahart, John Dittes 2005-6-1 11871 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  NY694127  Astragalus pulsiferae var. pulsiferae See comments 1981-6-23 614 Lassen West of Susanville 1463 Comment
  RSA111760  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 Comment
  CHSC13620  Astragalus purshii M. S. Taylor 1974-6-20 257 Lassen Ca. 400 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1554 Comment
  CHSC7668  Astragalus purshii Beverley J. Wise 1969-4-21 57 Lassen 6 mi. south of Susanville on Las. Co. Rd. 204 (Gold Run Road). 1310 Comment
  JEPS54815  Astragalus purshii L. S. Smith 1916-5-22 Lassen Honey Lake Comment
  CAS-BOT-BC194089  Astragalus purshii var. purshii C. R. Quick 1964-7-28 64 -84 Lassen Edge of Halls Flat , Black's Mt. Experimental Forest Comment
  CAS-BOT-BC192972  Astragalus purshii var. tinctus John Thomas Howell 1934-6-10 11862 Lassen Honey Lake Valley 37 miles s. of Susanville Comment
  NY694434  Astragalus purshii var. tinctus W. W. Eggleston 1911-5-29 6711 Lassen Vicinity of Doyle Station Comment
  UC13464  Astragalus purshii var. tinctus M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
  UC773896  Astragalus purshii var. tinctus L. R. Short and J. Warren 1936-6-11 S- 402 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range (Lassen National Forest) 1789 Comment
  UC82576  Astragalus spaldingii unknown 1892-6-22 Lassen Honey Lake Comment
  POM25988  Astragalus whitneyi Marcus E. Jones 1897-6-28 s.n Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC584308  Astragalus whitneyi G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2275 Lassen sw Diamond Mt. (s of Susanville); sw of Diamond Mt., s of Susanville 2164 Comment
  CHSC67217  Astragalus whitneyi var. confusus James D. Jokerst 1991-5-29 3303 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CAS-BOT-BC200868  Astragalus whitneyi var. confusus James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-24 4136 Lassen About 3 mi. s. of Adin on hwy. #139 1371 Comment
  SEINET12162056  Astragalus whitneyi var. confusus J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4136 Lassen ca 3mi S of Adin on hwy.139 1372 Comment
  CAS-BOT-BC68710  Athyrium filix-femina var. californicum Clare B. Hardham 1971-8-22 18405 Lassen Diamond Mountain 1981 Comment
  UC1537376  Atriplex confertifolia Gordon H. True Jr. 1936-6-24 520 Lassen n shore Honey Lake (Honey Lake Valley); n shore Honey Lake, Honey Lake Valley 1219 Comment
  UC1567451  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen Secret Valley w Hwy 395; Secret Valley 1347 Comment
  UC768839  Atriplex gardneri var. falcata R. F. Hoover 1940-10-5 4677 Lassen alkali plain s Secret Valley; s of Secret Valley Comment
  CDA2954  Atriplex hortensis E. E. Fix 1962-5-15 Lassen Pete Mendiboure property, Madeline. 0 Comment
  UCD97425  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  UC1037136  Avena fatua Leo Whitney 1935-5-27 3121 Lassen Bieber Comment
  CAS-BOT-BC106572  Balsamorhiza deltoidea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC106487  Balsamorhiza hookeri Betty J. Hammerly 1941-6-21 51 Lassen 8 miles SE of Likely on Blue Lake Road Comment
  JEPS1758  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi w of, along Hwy. 36 Fredonyer Pass 1752 Comment
  UC1035988  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen 5 miles beyond Blue Lake on road to Likely. Warner Mountains, Modoc National Forest Comment
  OBI48169  Balsamorhiza hookeri Rhonda Riggins 1989-4-27 1635 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  HSC100313  Balsamorhiza hookeri var. hirsuta Chris Boever, Ed Lutz and Wendi Lutz 2010-7-7 370102 Lassen On Co. Rd. 1, S from Cedarville, take gravel rd. 15 mi. to Tuledad Canyon Road. 1823 Comment
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May 1 2020
  SEINET2047669 Image available Balsamorhiza hookeri var. hirsuta N. H. Holmgren, P. K. Holmgren 1978-6-12 8935 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance East-Southeast of Ravendale. T33N, R16E, S5. 1768 Comment
  CHSC98317  Balsamorhiza macrolepis var. platylepis B. Castro; L. P. Janeway 2005-7-10 1500 Lassen Northern High Sierra Nevada. Nr Plumas Co line. Crest of the Diamond Mtns, overlooking NW end of Honey Lake, at N end of Stony Ridge. At NE edge of windswept, low flat ridge off end of jeep road ca 0.7 mi from its jcn with sharp bend in Rd 27N12, above headwaters of Stony Creek. 1993 Comment
  JEPS28469  Barbarea orthoceras George W. Gillett 1957-7-21 868 Lassen 300 yds n of trail summit Juniper Lake - Cameron Meadow trail; Lassen Volcanic National Park 2118 Comment
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CHSC113080  Beckmannia syzigachne Lowell Ahart; John Dittes 2013-7-22 18871 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET11193774  Berteroa incana A. Tiehm 2005-1 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles W of Hwy 395 on HWY 70, then 5.5 road miles N on Scott Road. 1494 Comment
  HSC95198  Betula glandulosa Gordon Leppig, J. Cromwell 1997-7-26 599 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1037310  Betula glandulosa Leo Whitney 1934-7-31 1806 Lassen 7-8 mi sw Eagle Lake (moist stream bank); Lassen National Forest, Bridge Creek, Bridge Creek Camp 1737 Comment
  JEPS121281  Bidens cernua Lowell Ahart, John Dittes 2013-7-23 18897 Lassen S margin of a levee road, about 100 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS32533  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near, between Jonesville and Standish Honey Lake Comment
  CHSC96712  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CHSC1342  Bistorta bistortoides L. Harmon 1946-6-23 Lassen Squaw Valley. Comment
  HSC23511  Bistorta bistortoides B. Anthony 1967-7-14 290 Lassen 5.3 mi. from jct. of Hwy. 44 and rd. to Silver Lake 1799 Comment
  CAS-BOT-BC127951  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CAS-BOT-BC127971  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CAS-BOT-BC128015  Blepharipappus scaber Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee 1219 Comment
  CAS-BOT-BC128032  Blepharipappus scaber Louella Bass 1983-6-10 7 - 83 Lassen Lassen College Campus, Susanville Comment
  CAS-BOT-BC128040  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen Sagebrush plains at south end of Secret Valley Comment
  CHSC13477  Blepharipappus scaber J. Pitts 1967-6-23 266 Lassen 2 mi s of Eagle Lake Field Station, on the e side of the road. Comment
  HSC81800  Blepharipappus scaber Thomas W. Nelson, Jane P. Nelson 1980-7-6 6030 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  UC762497  Blepharipappus scaber R. F. Hoover 1940-9-28 4633 Lassen Susanville Comment
  CAS-BOT-BC127953  Blepharipappus scaber B. J. Hammerly 1941-6-20 s.n. Lassen On dry plateau of lava boulders 8 mi S.-E. of Likely on Blue Lake 1676 Comment
  CAS-BOT-BC127955  Blepharipappus scaber Dr. Jean Linsdale 1929-6-9 s.n. Lassen Pete's Valley Comment
  CAS-BOT-BC128038  Blepharipappus scaber C. L. Hitchcock 1940-5-26 6612 Lassen lava beds ca. 12 miles north of Fall River Mills on Fall River 1371 Comment
  CAS-BOT-BC14090  Boechera pauciflora John Thomas Howell; Gordon H. True 1973-8-1 50161 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road south of Susanville. 1584 Comment
  UC1542747  Boechera pendulocarpa Barbara Ertter with Gary Schoolcraft 1987-6-16 7179 Lassen ca 1 mi w Hot Springs VABM (ne side of Honey Lake); Skeedaddle Mountains 1828 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
  UC10179  Boechera puberula M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  UCD114424  Boechera puberula Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  CAS-BOT-BC25509  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-8-1 50203 Lassen Sierra Nevada. Summit of Diamond Range, south of Susanville. About 3 miles east of Diamond Mountain. 2194 Comment
  SEINET3165698  Boechera retrofracta R. W. Spellenberg 2006-6-19 13743 Lassen along a USFS access road 2 km E of Calif. Hwy 139, the junction of road and highway 31 km SE of Modoc Co. line (just S of Adin) 1715 Comment
  UC1126590  Boechera retrofracta A. Simontacchi 1940-5-13 699 Lassen 7.5 mi wsw Cone Ranch Hdq.; Lassen National Forest, Halls Flat Quad. 1920 Comment
  CHSC29908  Boechera sparsiflora Robin Ondricek 1978-6-6 38 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  JEPS94610  Boechera sparsiflora Vernon H. Oswald and Lowell Ahart 1997-5-27 8512 Lassen on Forest Route 38N04 1.4 mi e Hwy. 139 ((between Hwy 139 near Willow Springs Guard Station and Coyote Flat), n of Susanville) 1645 Comment
  UC1126562  Boechera sparsiflora H. P. Hagge 1929-9-19 40 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  SD8418  Boykinia major Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CHSC117268  Brodiaea coronaria Lowell Ahart; John Dittes 2016-7-15 21232 Lassen About 80 yards west of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UC1137774  Brodiaea coronaria subsp. coronaria August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest 1706 Comment
  UC3344  Brodiaea coronaria subsp. coronaria M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
Read comments
Jun 19 2008
  CHSC63436  Bromus briziformis Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6308 Lassen Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. 1767 Comment
  SEINET230396 Image available Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road 3.4 km east of US Hwy 395 14.5 km airline distance southest of Ravendale. 1700 Comment
  UC1024682  Bromus ciliatus Leo Whitney 1934-7-26 2164 Lassen 7-8 mi sw of Eagle Lake (near Bridge Creek, Lassen National Forest, Bridge Creek Camp); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UCD58446  Bromus commutatus A. A. Beetle 1941-6-28 2809 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  UCD58854  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  CDA1826  Bromus japonicus T. C. Fuller 1963-6-1 10626 Lassen East side of road to Susanville, 3.2 miles south of Pittville. 0 Comment
  JEPS124392  Bromus japonicus Lowell Ahart, John Dittes 2015-7-13 20310 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS97404  Bromus japonicus Vernon H. Oswald and L. Ahart 1995-6-19 6874 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  RSA126867  Bromus marginatus G. A. Fischer, I. H. Johnson 1933-7-12 F 231 Lassen Patterson Flat. Lassen Forest. Comment
  CAS-BOT-BC162182  Bromus orcuttianus John Thomas Howell; Gordon H. True 1973-8-1 50180 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  CAS-BOT-BC162017  Bromus racemosus Louella Bass 1973-5-29 EV 66 Lassen Elysian Valley. 1325 Comment
  HSC22362  Bromus sterilis D. E. Anderson 1969-7-5 4998 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UC1136819  Bromus suksdorfii George A. Fischer and Irwin H. Johnson 1933-7-14 F 261 Lassen Lassen National Forest 1783 Comment
  UC1024827  Bromus tectorum Leo Whitney 1935-7-12 3233 Lassen Lassen National Forest, Camp 10, Fruit Grower's Supply Company Lassen National Forest; , Camp 10, Fruit Grower's Supply Compa Comment
  UC604684  Bromus tectorum Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  CAS-BOT-BC185001  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles west of Chester. Comment
  HSC95308  Calamagrostis stricta subsp. inexpansa Gordon Leppig, Kai Neander, Juli Neander 1997-7-25 685 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS124785 Image available Callitriche palustris M. L. Wheelis 1964-7-1 136 Lassen Loc. bridges between Bieber and New Bieber. Comment
  JEPS88592  Callitriche verna Vernon H. Oswald and Lowell Ahart 1996-6-24 7870 Lassen 2.5 mi s Eagle Lake (and 0.5 mi e of Eagle Lake Rd (A1), along Papoose Creek where it leaves the n end of the meadow, Papoose Meadows); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  RSA0011566  Callitriche verna R. F. Thorne, Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  RSA67251  Calocedrus decurrens Philip A. Munz 1951-9-15 16965 Lassen On dry flats, 6 mi west of Bieber. 1341 Comment
  UCD132943  Calocedrus decurrens T. E. Weier; Katrina Weier 1946-9-1 s.n. Lassen Lassen National Park. Comment
  SEINET8196128  Calochortus coeruleus C. G. Gulling 1905-1 1535 Lassen Big Meadows. Comment
  CHSC67072  Calochortus leichtlinii Willis Ball 1969-6-20 15 Lassen Found approx. 1 mile S. E. of E. L. B. S. about 50 ft. off the dirt road to the station. 1584 Comment
  UC1523812  Calochortus leichtlinii Gary Schoolcraft 1983-7-19 1096 Lassen s slope Fredonyer Peak 2255 Comment
  UC1537209  Calochortus leichtlinii Gordon H. True Jr. 1936-6-25 533 Lassen n side Hog Flat Reservoir 1524 Comment
  UC727118  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass 1219 Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  CAS-BOT-BC487965  Calochortus leichtlinii Louella Bass 1973-6-3 93 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC483438  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  SD52068  Calochortus nuttallii F. Stephens 1894-7-2 10337 Lassen Robbins Creek. Comment
  UCD105297  Caltha leptosepala K. M. Meyer; A. Townesmith 2007-7-21 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A 21. 1920 Comment
  SEINET10675935  Caltha leptosepala var. biflora Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A21. 1920 Comment
  SD52147  Calyptridium umbellatum Unknown 1894-7-2 Lassen Robin's Creek 1370 Comment
  RSA0017409  Calystegia occidentalis subsp. occidentalis Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA339996  Calystegia polymorpha Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-9 9581 Lassen Surprise Valley, 23.7 km (14.7 mi) south of Fort Bidwell. 1402 Comment
  CAS-BOT-BC497552  Camassia quamash subsp. breviflora John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49223 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC66238  Camelina microcarpa Vernon H. Oswald; Lowell Ahart 1996-6-24 7881 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 NE corner of the meadow (ca. 0.1 mi E of where Papoose Creek leaves the N end of the meadow). 1636 Comment
  HSC63958  Camissonia claviformis subsp. cruciformis Teresa Prendusi 1980-5-6 Lassen Honey Lake area Comment
  CHSC27119  Camissonia contorta Robert A. Schlising 1978-6-8 3286 Lassen SE of Eagle Lake, in streambed in Murrers Upper Meadow. 1536 Comment
  CHSC64795  Camissonia contorta Vernon H. Oswald 1995-5-24 6781 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an insigned 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
  JEPS89992  Camissonia contorta Dean Wm. Taylor with Robert A. Price 1988-6-4 9768 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. Watershed 1036 Comment
  UC107616  Camissonia pubens T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  SEINET10492095  Camissonia tanacetifolia David B. Dunn, Paul Gallian 1971-6-2 Dunn 493 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc; juniper artemesia. 1646 Comment
  RSA38463  Camissonia tanacetifolia subsp. tanacetifolia P. A. Munz 1947-5-19 11883 Lassen Madeline 1677 Comment
  CAS-BOT-BC37010  Capsella bursa-pastoris John Thomas Howell 1974-7-8 50514 Lassen Sierra Nevada. Susanville. 1295 Comment
  CAS-BOT-BC37243  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49213 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  JEPS94549  Cardamine breweri Vernon Oswald and Lowell Ahart 1997-6-24 8618 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43, 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 Comment
  UC10331  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  JEPS95978  Cardaria chalepensis Vernon H. Oswald and L. Ahart 1999-6-9 9749 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  JEPS120879  Carex Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18770 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  CHSC85988  Carex abrupta L. P. Janeway 2003-7-24 7918 Lassen High Cascade Range. Small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  CHSC112416  Carex angustata Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18769 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC190429  Carex angustata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  SEINET13327167  Carex aquatilis var. aquatilis J. Atchley 1993-5-5 1 Lassen Along willow creek. 1219 Comment
  UC50815  Carex athrostachya J. Burtt Davy Jun 17-24 1897 3298 Lassen Honey Lake Valley, slough near Dr. Witt's Comment
  CDA33021  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen Adjacent to boat ramp, campground on the east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. 0 Comment
  CHSC66412  Carex aurea Vernon H. Oswald; Lowell Ahart 1996-6-17 7814 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  CHSC77240  Carex aurea G. Schoolcraft 1996-9-5 2553 Lassen N. side of Biz Johnson Trail. 1402 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
  CAS-BOT-BC34933  Carex densa T. C. Fuller 1966-7-20 14963 Lassen South side of road to Pittville, 5.4 miles west of Little Valley Post Office. NW Lassen County. Comment
  SEINET10823330  Carex disperma Vernon H. Oswald, Lowell Ahart 1995-7-24 Oswald 7145 Lassen T31N, R7E, NW 1/4, NW 1/4, Sec 24. High Cascade Range, Red Fir Forest. Along Pine Creek on the upstream side of Forest Road 31N25, at the northwest corner of Upper Stephens Meadows, ca 3 miles north/northeast of Silver Lake, north of Lake Almanor. In wet soil of lodgepole Pine woods on a swampy meadow bordering the creek. 1905 Comment
  JEPS94486  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8519 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38MN04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir, Forest Route 38MN04 1682 Comment
  SEINET7557452 Image available Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvey Valley. Comment
  UCD140286  Carex douglasii James P. Smith; John Sawyer 1971-5-23 4664 Lassen along California 139, 1 mile south of junction with road to Thermo. Comment
  CHSC60783  Carex filifolia var. erostrata Vernon H. Oswald; Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  JEPS87492  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-BC34002  Carex filifolia var. filifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49194 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC21305  Carex fracta John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49451 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  SEINET7587564 Image available Carex heteroneura L. P. Janeway 2003-7-24 7915 A 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
  HSC95183  Carex interior Gordon Leppig 1998-7-12 954 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC65365  Carex limosa Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7217 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likeley. 1859 Comment
  CHSC97050  Carex limosa Gordon Leppig; J. Cromwell 1997-7-27 610 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  UC1136939  Carex mariposana L. R. Short and J. Warren 1936-6-9 S- 405 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  UC1136940  Carex microptera George A. Fischer, Irwin H. Johnson 1933-7-12 F 237 Lassen Patterson Flat Lassen Forest 1737 Comment
  SEINET7568737 Image available 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
  UC1100497  Carex nebrascensis Verne Grant and Herbert L. Mason 1947-7-9 13301 Lassen 5 mi e Bieber Comment
  UC1142949  Carex nebrascensis A. L. Hormay 1941-6-18 7 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  CAS-BOT-BC119715  Carex nervina Clare B. Hardham 1961-6-17 7508 Lassen Baxter Creek south of Susanville. Comment
  CHSC65364  Carex pellita Vernon H. Oswald 1995-8-21 7209 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. 1859 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
  CHSC91377  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11859 Lassen On the west side of a 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
  CHSC91379  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11864 Lassen On the west side of a 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
  SEINET7572130 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11877 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  UC1776678  Carex praegracilis G. Schoolcraft 1995-5-22 2484 Lassen East of Skedaddle Ranch 1554 Comment
  CAS-BOT-BC118615  Carex raynoldsii George Wilson Gillett 1957-7-29 948 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  CHSC53660  Carex rossii L. P. Janeway; Oscar V. Janeway, Lillian D. Janeway 1987-5-27 2101 Lassen Near S end of Eagle Lake. Along Eagle Lake Rd at jct with road to Pikes Pk. 1569 Comment
  CHSC74311  Carex simulata James D. Jokerst 1991-5-28 3296 Lassen Survey for reroute of Hwy. 139 at the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. Modoc Plateau. 1554 Comment
  HSC95228  Carex simulata Gordon Leppig 1998-7-12 956 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC97395  Carex straminiformis L. P. Janeway 2003-7-24 7917 Lassen High Cascade Range, along FS 30N14, 1.1 km from FS 30N21, upper Susan River, 4.7 mi. W of Clover Valley 1932 Comment
  UC1108036  Carex subfusca E. B. Copeland 1952-8-13 Lassen at road crossing King's Creek Meadow; Mount Lassen 2225 Comment
  UC2031880  Carex subfusca Nick Otting 2003-7-17 695 Lassen Cascade Mountains, Susan River, 1/2 mile NE of Devil's Corral, 5 air miles west of Susanville. Comment
  SEINET7577217 Image available Carex subfusca George W. Gillett 1957-7-26 913 Lassen Lassen Volcanic National Park, Butte Lake. 1844 Comment
  OBI75892  Carex vesicaria Anthony Baniaga 2011-8-17 503 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1978 Comment
  RSA220022  Carex whitneyi Beecher Crampton 1964-6-26 s.n. Lassen Ca. 4 miles SSE Bogard Ranger Station, Lassen National Forest. Comment
  CAS-BOT-BC248972  Castilleja Margaret M. Hanna 1956-6-3 942 Lassen 2 mi. west of Nubieber, Hiway 299 Comment
  CHSC106687  Castilleja angustifolia Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and trail to Indian Springs. 1439 Comment
  CHSC7630  Castilleja angustifolia Beverley J. Wise 1969-5-15 104 Lassen 28.1 mi. east of Susanville on Hwy 395. 1524 Comment
  HSC31355  Castilleja applegatei D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19187 Lassen Harvey Valley near Cone Springs Comment
  UC1483848  Castilleja applegatei G. Schoolcraft 1979-7-5 123 Lassen se of Observation Mountain Lookout (top of Observation Mountain); Observation Mountain 2407 Comment
  HSC93502  Castilleja applegatei subsp. disticha Gordon Leppig, Tony LaBanca 1998-7-13 965 Lassen Modoc National Forest, Blue Lake Ranch 1799 Comment
  JEPS76164  Castilleja applegatei subsp. pallida T. I. Chuang with Fei-Mei Chuang 1977-7-25 7659 Lassen 7.1 mi W of Madeline (on road to Adin) Comment
  CAS-BOT-BC249621  Castilleja applegatei subsp. pinetorum Mrs. A S. Baldwin 1927-5-19 s.n. Lassen Lava Beds Comment
  CAS-BOT-BC249623  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-10 12556 Lassen Black's Mt. Comment
  JEPS81866  Castilleja applegatei subsp. pinetorum L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5842 Lassen About 2.5 miles west of Paynes Creek, along highway 36 to Mt. Lassen (6.5 miles northeast of Dales) Comment
  JEPS85742  Castilleja applegatei subsp. pinetorum Roy E. Buck and Robert A. Price 1988-6-26 1030 Lassen ca 0.5 air mi n Fredonyer Peak main summit (on subsidiary peak, ca 30 air mi nne of Susanville); Fredonyer Peak 2377 Comment
  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
  UC1012183  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Susanville; Route 36 1371 Comment
  UC1035996  Castilleja applegatei subsp. pinetorum Helen K. Sharsmith 1955-6-22 4495 Lassen 5 mi beyond Blue Lake (on the road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UC1063040  Castilleja applegatei subsp. pinetorum H. P. Hagge 1929-9-12 25 Lassen Logan Mtn.; Eagle Lake Quad. 1828 Comment
  UC1136983  Castilleja applegatei subsp. pinetorum L. R. Short and J. Warren 1936-6-5 S- 378 Lassen Burgess Spring Experiment Range; Lassen Forest 1792 Comment
  UC1542945  Castilleja applegatei subsp. pinetorum G. Schoolcraft 1987-5-6 1699 Lassen n end Eagle Lake (near Stone Ranch) 1554 Comment
  UC506917  Castilleja applegatei subsp. pinetorum George A. Fischer, Irwin H. Johnson 1933-7-14 F- 259 Lassen Lassen Forest 1783 Comment
  UCR268960  Castilleja applegatei subsp. pinetorum Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31428 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
  CHSC68874  Castilleja arachnoidea Vernon Oswald; Lowell Ahart 1997-6-24 8642 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
  JEPS3595  Castilleja campestris subsp. campestris Helen-Mar Wheeler 1952-7-11 Lassen s of Madeline Comment
  UC725999  Castilleja campestris subsp. campestris A. A. Heller 1938-6-23 15218 Lassen between Termo and Madeline (along U.S. Hwy 395) 1615 Comment
  CHSC4764  Castilleja lacera R. Carter 1967-7-16 623 Lassen Along side road. Comment
  JEPS126522  Castilleja lacera Lowell Ahart, John Dittes 2016-6-7 20993 Lassen West of pond, 110 yards east of the 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
  UC726418  Castilleja lacera A. A. Heller 1941-6-26 16234 Lassen ridge w Nieubieber Comment
  CAS-BOT-BC226034  Castilleja lacera Ella D. Cantelow 1940-5-31 4439 Lassen E of McArthur Comment
  JEPS74942  Castilleja lemmonii T. I. Chuang and F. M. Chuang 1975-7-23 7555 Lassen just w Westwood Comment
  JEPS85915  Castilleja lemmonii L. R. Heckard with R. Bacigalupi 1980-6-12 5260 Lassen ne of Westwood (near golf course) 1554 Comment
  JEPS62629  Castilleja miniata Clare B. Hardham 1969-8-28 17424 Lassen w of Janesville; Sierra Nevada Comment
  UC485781  Castilleja miniata H. E. and S. T. Parks Jun 1928 250 Lassen Drakesbad; Lassen National Park Comment
  RSA505356  Castilleja miniata R. C. Bacigalupi, G. Thomas Robbins 1955-7-20 5402 Lassen Along East Creek on grade 2.3 miles south of and below Patterson Ranger Station (and 0.8 mile s. of Lassen - Modoc County line). Southern end of the Warner Mts. 2012 Comment
  CHSC6269  Castilleja miniata subsp. miniata J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  CAS-BOT-BC240998  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen Route 395, 5 miles south of Ravendale 1645 Comment
  CHSC37346  Castilleja pilosa Jenifer Estep 1978-6-27 17 Lassen SE of Eagle L. at Mahogany L. 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
  JEPS17615  Castilleja pilosa Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5410 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadow, s end of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  JEPS76165  Castilleja pilosa T. I. Chuang and Fei-Mei Chuang 1977-7-25 7658 Lassen about 0.25 mi s Madeline (on Highway 395) Comment
  CHSC60853  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1993-6-28 5576 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 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
  HSC103924  Castilleja tenuis L. Ahart, John Dittes 2008-6-22 15027 Lassen Big Valley; ~5 mi. (air) NE of Bieber, and ~2.1 mi. (air) NE of the Headquarters at Ash Creek State Wildlife Area 1263 Comment
  RSA0035394  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2008-6-20 14920 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC49071  Ceanothus cuneatus Alice Eastwood; J. T. Howell 1940-6-11 7992 Lassen Big Valley Mts. Comment
  POM339726  Ceanothus prostratus F. R. Fosberg 1969-8-15 51427 Lassen 10miles W of Susanville Comment
  UC506913  Ceanothus prostratus George A. Fischer, Irwin H. Johnson 1933-2-14 F- 263 Lassen Lassen National Forest 1767 Comment
  HSC99160  Ceanothus prostratus Paul J. CaraDonna 2009-5-17 133 Lassen Vista Point, S of highway, 0.25 mi. S of mile marker 58 1524 Comment
  HSC30197  Ceanothus prostratus var. laxus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19257 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC52437  Ceanothus velutinus var. velutinus 1927-7-15 58 Lassen Lassen Forest, 1/2 mi. South of Bogard Ranger Sta. 1737 Comment
  CAS-BOT-BC52436  Ceanothus velutinus var. velutinus M. S. Jussel 1931-9-6 s.n. Lassen On the road to Mt. Lassen, five miles from Westwood 1828 Comment
  CDA1996  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen 1 mi. W of Johnstonville, on N side of old road to Susanville. (A27 ? Johnstonville Rd. N of Center Rd.) 0 Comment
  CDA37979  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen Secret Valley, Highway 395, 3.3 miles north of road to Karlo. 0 Comment
  CDA7223  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  RSA157739  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Hwy. 395 to Madelaine, 1.6 miles north of Termo Comment
  UC1229867  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E side of Hwy 395 to Madelaine, 1.6 mi N of Termo Comment
  UCD130019  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen east side of Highway 395 to Madelaine, 1.6 mile north of Termo. Comment
  UCR57551  Centaurea maculosa R. D. Goeden, Don W. Ricker 1989-8-22 890822- 8 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  RSA121127  Centaurea repens E. Sawyer 1935-6-27 239 Lassen 5 miles NNE of Beckwith Pass Comment
  UCR67437  Centaurea solstitialis George K. Helmkamp 1990-9-23 D- 4 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UCD130109  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen west side of Hwy 395, 1.7 miles south of Doyle. Comment
  UC1181382  Centaurea virgata subsp. squarrosa Darwyn Briggs 1960-7-28 Lassen Big Valley 1264 Comment
  CAS-BOT-BC279592  Centromadia pungens subsp. pungens Gordon H. True 1973-8-22 7656 Lassen North shore of Honey Lake, ca. 5 miles east of Janesville and just west of Hartson Reservoir 1219 Comment
  RSA755002  Cerastium glomeratum L. Ahart, John Dittes 2008-6-20 14966 Lassen About 10-100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber. 1264 Comment
  CAS-BOT-BC136988  Cercocarpus betuloides var. betuloides Alice Eastwood; John Thomas Howell 1940-6-11 7965 Lassen Eastern Fall River Valley 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
  SEINET10543177  Cercocarpus ledifolius Katherine L. Morris 1973-5-25 Morris 218 Lassen 2.6 miles w of susanville, on us 36, in an area of pinus jeffreyi and purshia Comment
  CDA10715  Chaenactis douglasii var. achilleifolia T. C. Fuller 1959-7-7 Lassen Highway 395, 1.6 miles south of Ravendale. 0 Comment
  CAS-BOT-BC276618  Chaenactis douglasii var. douglasii John Thomas Howell 1934-7-8 12497 Lassen Spalding's Eagle Lake Comment
  CHSC93690  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction. 1460 Comment
  JEPS19806  Chaenactis douglasii var. douglasii Rimo Bacigalupi with S. Galen Smith 1957-6-28 6012 Lassen ne of Karlo (along U.S. Highway 395, near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC276612  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-25 3755 Lassen Susanville, just W of town 1300 Comment
  SEINET7450277 Image available Chaenactis nevadensis D. W. Kyhos 1967-9-1 67 -87 Lassen Within 1/2 mile north of Hat Lake Comment
  CHSC30603  Chamaebatiaria millefolium Mary Nesset 1975-7-16 10 Lassen E.L.B.S. water tank. 1554 Comment
  CDA41125  Chamaesaracha nana T. C. Fuller 1962-6-13 8997 b Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  NY1001400  Chamaesyce maculata G. Schoolcraft 1998-9-17 2810 Lassen Susanville BLM office 1268 Comment
  CHSC58840  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1992-7-16 5114 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. Beds of creek and reservoir. 1691 Comment
  CHSC99743  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2008-6-20 14913 Lassen On the levee road and in vernal pools, 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
  JEPS97305  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and L. Ahart 1995-8-14 7178 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  SEINET9445226  Chamaesyce serpyllifolia M. J. Williams 1974-7-29 74 -L-47 Lassen S of Hwy 70, 2 miles W of Hallelujah Junction. 1494 Comment
  JEPS128409  Chamerion angustifolium subsp. circumvagum Catherine Bauer with Ellen Bauer Benson 2017-8-16 17 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  JEPS39306  Chamerion angustifolium subsp. circumvagum Brown and Wieslander 1922-7-23 37 Lassen Martin Sprs. Eagle Lake Comment
  CHSC112973  Chenopodium album Lowell Ahart; John Dittes 2013-7-22 18859 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
  JEPS95711  Chenopodium album Vernon H. Oswald and L. Ahart 1995-8-14 7180 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  CHSC106830  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet. 1524 Comment
  UCR265181  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  UC1949078  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment
  POM312487  Chenopodium berlandieri var. zschackei Irving Schneider 1947-8-1 8229 Lassen Irrigation ditch running SW into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1745664  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC1191341  Chenopodium glaucum Malcolm A. Nobs and S. Galen Smith 1949-7-22 1072 Lassen Eagle Lake; n shore Comment
  CHSC25311  Chenopodium leptophyllum Pauleen Broyles 1977-6-14 158 Lassen Skedaddle Ranch Road at South Fork Reservoir turn-off, ca 8 km ne of Herlong. 1660 Comment
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  CHSC29946  Chenopodium nitens Robin L. Ondricek 1978-8-6 116 Lassen In dried, cracked mud at Lower Dry Lake. 1645 Comment
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Nov 1 2014
  CHSC58839  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1992-7-16 5103 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
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Nov 1 2014
  CAS-BOT-BC426337  Chenopodium nitens John Thomas Howell 1934-7-10 12543 Lassen Patterson Flats Comment
  CAS-BOT-BC260781  Chenopodium rubrum var. humile Malcom A. Nobs; S. Galen Smith 1949-7-22 1071 Lassen Northeast shore of Eagle Lake Comment
  CHSC45516  Chimaphila menziesii Lowell Ahart; John Thomas Howell 1974-7-9 538 Lassen On the south side of Eagle Lake Road, near the south edge of Eagle Lake. 1584 Comment
  CAS-BOT-BC451357  Chimaphila menziesii Louella Bass 1978-6-15 78 -3 Lassen Elysian Valley 1325 Comment
  SEINET4671623 Image available 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
  CAS-BOT-BC100758  Chrysothamnus viscidiflorus subsp. puberulus P. Monnet 1913-7-1 792 Lassen Hot Spring Peak 1524 Comment
  JEPS21415  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-10-5 4664 Lassen Wendel Comment
  SEINET515878  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald 1998-9-8 9587 Lassen Kramer Rd. 3.1 mi S of Lookout. 1280 Comment
  SEINET5727104 Image available 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
  SEINET5727126 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7712 Lassen Willow Creek. Collected along Forest Road 37N04, off of CA 139.; Willow Creek 1748 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
  UC1567437  Chylismia claviformis subsp. cruciformis G. Schoolcraft 1989-5-16 1875 Lassen w Hwy 395 (ca 2 mi s of Karlo turnoff) 1356 Comment
  UC1186580  Chylismia claviformis subsp. integrior G. I. Stage and R. W. Thorp 1959-6-20 59 -116 Lassen 9.6 mi n Litchfield Comment
  POM35787  Cichorium intybus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CDA38209  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CAS-BOT-BC278010  Cirsium cymosum Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8596 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1386 Comment
  CDA15026  Cirsium cymosum B. Villegas 1998-8-18 s.n. Lassen Cascade Range; Hwy 299, 1 mi. W of Big Valley Summit (0.3 mi. W of milepost 7.5). Comment
  UCD20369  Cirsium cymosum Joe DiTomaso 2002-6-5 s.n. Lassen about 3 miles northwest of the junction between Nevada, Modoc, and Lassen counties. Comment
  UC1136775  Cirsium cymosum var. cymosum L. R. Short and Wm. Gansberg 1936-7-9 S- 479 Lassen Burgess Spr. Exp. Range Lassen Forest 1807 Comment
  CDA1261  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 -C Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  UC1587096  Cirsium occidentale var. candidissimum G. Schoolcraft 1991-7-30 2201 Lassen s of Widow Mt. (along Rock Canyon Rd.) 1310 Comment
  RSA186826  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CDA1557  Cirsium scariosum T. C. Fuller, E. E. Fix 1959-7-23 2825 Lassen Near Ravendale. 0 Comment
  RSA286400  Cirsium undulatum T. C. Fuller 1980-8-5 20311 Lassen North side of road to campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale Comment
  CAS-BOT-BC439002  Cistanthe monosperma A. A. Heller 1938-6-4 15139 Lassen One mile east of Westwood 1524 Comment
  CAS-BOT-BC233918  Cistanthe umbellata D. B. Dunn; B. J. Cox 1971-6-2 17792 Lassen 6 mi. N. of Halleluja Jct. on U.S. Hwy 395 1402 Comment
  CAS-BOT-BC163410  Clarkia purpurea subsp. quadrivulnera H. D. Ripley; R. C. Barneby 1943-6-13 5718 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC164867  Clarkia rhomboidea Louella Bass 1978-6-10 78 -1 Lassen Elysian Valley 1325 Comment
  CHSC6187  Clarkia rhomboidea W. Vinyard 1946-6-17 Lassen Mt. Fredonyer summit. Eagle Lake. 2421 Comment
  RSA46419  Clarkia stellata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin s Ranch. 1829 Comment
  CHSC63414  Claytonia rubra subsp. depressa Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6311 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  CAS-BOT-BC443732  Claytonia rubra subsp. rubra A. M. Vollmer; L. Beane 1953-7-1 75 Lassen Along [Halls Flat] road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC117188  Claytonia rubra subsp. rubra Lowell Ahart; John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  NY222746  Cleome platycarpa N. H. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC423197  Cleomella parviflora Arnold Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel 1231 Comment
  UCD150394  Cleomella parviflora Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  CAS-BOT-BC423223  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  NY242361  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  POM93728  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC36452  Collinsia greenei Susan H. Euing 1982-6-6 6 Lassen Pine Creek below fish trap. Flood plain-dry lake bed area. Comment
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Jun 18 2018
  CDA5730  Collinsia parviflora L. Ahart, J. Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. Comment
  CHSC71101  Collinsia parviflora Vernon H. Oswald; Lowell Ahart 1998-5-22 9126 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CHSC7757  Collinsia parviflora Beverley J. Wise 1969-4-26 102 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  JEPS107462  Collinsia parviflora Lowell Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS114656  Collinsia parviflora Lowell Ahart, John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS94834  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9126 Lassen 5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  UC1143037  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1737 Comment
  RSA0117241  Collinsia parviflora K. e. Bradshaw 1939-5-27 229 Lassen Lassen Forest. S. end Black Mt. Experimental Forest, Plot 39-1. 1753 Comment
  HSC75889  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19259 Lassen Harvey Valley near Cone Springs Comment
  SEINET13405554  Collinsia torreyi D. E. Brix 1962-5-2 s. n. Lassen Red Rock Road. 1433 Comment
  CHSC6198  Collomia grandiflora P. Collett 1946-6-24 Lassen Spalding's, Eagle Lake. 1554 Comment
  POM146293  Collomia grandiflora J. B. Feudge 1740 Lassen Bank of Susan River. Susanville Comment
  CHSC23479  Collomia tinctoria Wayne O. Baum 1971-7-5 71 -11 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC29920  Collomia tinctoria Robin L. Ondricek 1978-6-20 64 Lassen Gallatin Burn, 1.8 mi s of Five Corners. 2011 Comment
  UC1037277  Collomia tinctoria Leo Whitney 1934-7-22 1749 Lassen 6 mi w lower end of Eagle Lake; Lassen National Forest, Antelope Mountain 1981 Comment
  HSC95333  Comarum palustre Gordon Leppig, Tony LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA3700  Conringia orientalis Agricultural Commissioner Jul 1948 Lassen Susanville. 0 Comment
  CHSC7713  Convolvulus arvensis Beverley J. Wise 1969-6-4 33 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  CAS-BOT-BC286112  Conyza canadensis John Thomas Howell; Gordon H. True 1973-8-1 50154 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  POM33286  Conyza canadensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  POM107536  Corallorhiza maculata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  CHSC76102  Cordylanthus maritimus subsp. canescens Lowell Ahart; Vernon H. Oswald 1999-9-13 8218 Lassen 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
  JEPS74351  Cordylanthus maritimus subsp. canescens L. R. Heckard, T. I. Chuang and R. Bacigalupi 1974-7-25 3769 Lassen 4.6 mi n U. S. 395 (along County route A-3 (near old school house, several mi w of Honey Lake); Honey Lake 1219 Comment
  CHSC27664  Crepis acuminata Robert A. Schlising 1978-7-15 3317 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  POM17703  Crepis acuminata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC581206  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2315 Lassen sw-facing slope about a mi below summit; Black Mountain 1940 Comment
  CAS-BOT-BC291547  Crepis intermedia Margaret Williams 1974-8-4 74 -L-76 Lassen Near Hallelujah Junction west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  POM230947  Crepis occidentalis E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1748 Lassen Ridge east of Red Rock. 1616 Comment
  UC1136842  Crepis occidentalis George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 Comment
  UC30521  Crepis occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3406 Lassen Chat Honey Lake Valley 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
  UC773984  Crepis occidentalis L. R. Short and Wm. Gansberg 1936-7-7 S- 476 Lassen Burgess Spring Experiment Station Lassen <National> Forest 1764 Comment
  UCD130973  Crepis occidentalis Grady L. Webster 1989-5-13 7722 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC376489  Crepis occidentalis subsp. conjuncta G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2319 Lassen Black Mountain about a mile below the summit 1940 Comment
  UC581289  Crepis occidentalis subsp. occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1748 Lassen nw-facing slope of ridge e Red Rock 1600 Comment
  CAS-BOT-BC290751  Crepis occidentalis subsp. occidentalis David D. Keck; J. Clausen 1935-6-24 3752 Lassen 2 miles south of Ravensdale 1463 Comment
  CAS-BOT-BC290824  Crepis occidentalis subsp. pumila David D. Keck; J. Clausen 1935-6-25 3759 Lassen Susanville 1340 Comment
  CHSC67080  Cressa truxillensis Jeanne Boze 1981-6-11 106 Lassen Outer edge of Horse Lake, 11 1/2 mil. from 139 on Horse Lake Rd. 1539 Comment
  JEPS94076  Crypsis schoenoides Vernon H. Oswald and Lowell Ahart 1998-9-8 9577 Lassen Hwy. 299 at R.R. overpass on e. side of Nubieber (depression near hwy.) 1255 Comment
  CHSC57350  Cryptantha K. R. Stern 1974-6-26 5860 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, ca. 1.8 mi nw of intersection with Hwy. 44. Comment
  NY1153787  Cryptantha affinis G. Schoolcraft 1990-6-12 2089 Lassen About 17 miles east of Ravendale in Pine Dunes RNA 1707 Comment
  UC1137644  Cryptantha affinis A. Simontacchi 1940-5-28 776 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  JEPS117574  Cryptantha ambigua Lowell Ahart, John Dittes 2010-7-31 17023 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
  NY1112275  Cryptantha ambigua B. J. Ertter 1987-6-16 7199 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  RSA0059645  Cryptantha ambigua Richard R. Halse 2004-8-8 6616 Lassen Along State Highway 139 ca. 6 miles north of Eagle Lake. 1710 Comment
  CAS-BOT-BC189326  Cryptantha circumscissa John Thomas Howell 1934-6-10 11852 Lassen 4 miles S of Omira Comment
  CHSC25315  Cryptantha circumscissa Pauleen Broyles 1977-4-1 168 Lassen Roadway along Skedaddle Creek ca 8 km ene of Herlong. 1350 Comment
  CHSC5014  Cryptantha circumscissa L. G. Bennett 1967-7-5 111 Lassen Immediate vicinity of Eagle Lake Biological Station, Eagle Lake. 1554 Comment
  CHSC5035  Cryptantha circumscissa L. B. Barlow 1967-7-12 110 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 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
  UC699733  Cryptantha circumscissa Farris Farris 1936-6-5 Lassen Airport, Susanville Susanville 1280 Comment
  SDSU20525  Cryptantha echinella Nuri Benet-Pierce, John P. Pierce 2012-7-14 526 Lassen Diamond Mountain. 2023 Comment
  SJSU5810  Cryptantha intermedia J. W. Tilden 1958-6-27 1294 Lassen Madeline Comment
  SEINET8545993  Cryptantha intermedia var. grandiflora J. A. Young 1978-4-13 s.n. Lassen Adin, Meyers Ranch. Comment
  CHSC64766  Cryptantha pterocarya var. pterocarya Vernon H. Oswald 1995-5-24 6760 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. Slope at the base of the Amedee Mtns. 1280 Comment
  POM72585  Cryptantha torreyana Marcus E. Jones 1897-6-25 7102 Lassen Susanville. 1341 Comment
  UC1037251  Cryptantha torreyana Leo Whitney 1934-7-5 1787 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  UC526168  Cryptantha torreyana John Thomas Howell 1934-7-10 12546 Lassen Long's Well Comment
  JEPS107811  Cryptantha watsonii Lowell Ahart, John Dittes 2005-6-2 11949 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
  UC1134216  Cupressus bakeri D. Dunning 1935-11-7 Lassen 2 mi E of Burney Spring 1463 Comment
  UCD54418  Cuscuta approximata Jerry Schmierer 1986-9-1 s.n. Lassen Don Blickenstaff Ranch. Comment
  CAS-BOT-BC39681  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale. 1737 Comment
  CHSC59701  Cusickiella douglasii Mary Meyer 1980-7-15 Lassen 1546 Comment
  NY674779  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale, CA 1737 Comment
  SEINET248370  Cusickiella douglasii Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale. 1700 Comment
  UC1523762  Cusickiella douglasii Gary Schoolcraft 1982-7-20 809 Lassen e McKesick Pk; e of McKesick Pk 2072 Comment
  CDA40496  Cynoglossum occidentale T. C. Fuller 1962-6-13 8997 c Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  CAS-BOT-BC114056  Cyperus squarrosus George Wilson Gillett 1957-9-4 1125 Lassen Widow Lake. East margin of lower lake, near inlet in drying mud. 2072 Comment
  SEINET7725892  Cypripedium californicum Unknown Lassen Mt. Dyer 1829 Comment
  SEINET6627868  Cystopteris fragilis M. J. Williams 1970-7-4 s.n. Lassen Ash Creek, SE of Adin 1280 Comment
  SEINET6629019  Cystopteris fragilis M. J. Williams 1970-7-4 s.n. Lassen Ash Creek, SE of Adin 1280 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
  CHSC117527  Damasonium californicum Lowell Ahart; John Dittes 2016-7-13 21138 Lassen South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1100148  Damasonium californicum Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 755 Lassen on Great Northern R.R. <Nubeiber> (Hwy. 299) Comment
  UC527  Damasonium californicum J. Burtt Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  CAS-BOT-BC445514  Damasonium californicum 1927-7-15 72 Lassen Lassen National Forest. Feather Lake 1737 Comment
  CAS-BOT-BC445520  Damasonium californicum Clarence R. Quick 1962-6-17 62 23 A Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  RSA245244  Damasonium californicum John Pratt 1970-6-21 33 Lassen [No locality information provided] Comment
  CAS-BOT-BC189863  Danthonia californica John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  POM115072  Danthonia californica Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UCD61015  Danthonia californica John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  RSA0065387  Danthonia californica M. P. Harthill 1972-6-17 834 Lassen Madeline. 1676 Comment
  CAS-BOT-BC192328  Danthonia unispicata John Thomas Howell 1977-6-22 52406 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  UC773969  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  UCD61291  Danthonia unispicata Beecher Crampton 1964-6-25 7069 Lassen 25 miles NW of Susanville, State Hwy. 44, Bogard Ranger Station, Lassen National Forest, meadow of Pine Creek Valley. 1722 Comment
  UC1523708  Deinandra lobbii Gary Schoolcraft 1981-8-25 567 Lassen e Little Valley (at edge of reservoir in flat); Chico Flat 1377 Comment
  CAS-BOT-BC291779  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  UC1136878  Delphinium andersonii L. R. Short 1936-5-12 S- 347 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1834 Comment
  UC9127  Delphinium andersonii Mrs. C. C. Bruce June 1898 2238 Lassen Shumway Comment
  SEINET5337963  Delphinium andersonii F. B. Headley Unknown s.n. Lassen Honeylake, Calif. Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 Comment
  CAS-BOT-BC116468  Delphinium nuttallianum A. A. Heller 1938-6-4 s.n. Lassen ...about 2 miles south of Westwood 1463 Comment
  CHSC67294  Delphinium nuttallianum James D. Jokerst 1991-5-29 3306 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
  JEPS103186  Delphinium stachydeum G. Schoolcraft 2000-7-5 2910 Lassen On Shinn Mountain above Spanish Spring Reservoir 2011 Comment
  RSA0011561  Deschampsia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46991 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  JEPS107688  Deschampsia danthonioides Lowell Ahart, John Dittes 2005-6-1 11913 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
  UC1024884  Deschampsia danthonioides Leo Whitney 1935-5-26 3137 Lassen 10 mi. e. Adin (Ash Creek); Ash Creek Comment
  CAS-BOT-BC201810  Deschampsia elongata Clare B. Hardham 1971-8-22 18377 Lassen Diamond Mountain 2133 Comment
  HSC68802  Deschampsia elongata G. Schoolcraft 1980-8-13 350 Lassen N side of Diamond Mountain. 1951 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
  CHSC60884  Descurainia incisa subsp. filipes Vernon H. Oswald; Lowell Ahart 1993-7-8 5656 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along a ridge between the railroad and the lake. 1709 Comment
  CAS-BOT-BC43105  Descurainia paradisa G. Schoolcraft 1998-6-9 2733 Lassen Lower slopes of Amedee Mountains. 1249 Comment
  SEINET5343182  Descurainia paradisa var. paradisa F. B. Headley 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  CDA43000  Descurainia sophia L. Ahart, John Dittes 2008-6-2 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. Comment
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Oct 5 2019
  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
  CHSC99284  Descurainia sophia Lowell Ahart; John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET10841501  Descurainia sophia Mary Susan Taylor 1974-1 Taylor 258 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC502558  Dichelostemma congestum A. M. Vollmer; L. Beane 1953-7-1 95 Lassen Along Halls Flat road, beginning 6 mi W of Susanville to McCarthur 1554 Comment
  CAS-BOT-BC500983  Dichelostemma multiflorum T. S. Brandegee 1892-7-30 s. n. Lassen Susanville Comment
  CAS-BOT-BC500985  Dichelostemma multiflorum Ella Dales Cantelow 1935-6-8 s. n. Lassen 13 mi. w. of Bieber Comment
  CAS-BOT-BC292259  Dieteria canescens John Thomas Howell 1974-7-8 50470 Lassen Susanville 1295 Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  CHSC64867  Dieteria canescens var. shastensis Vernon H. Oswald 1995-6-26 6937 Lassen Modoc Plateau. Gravel pit on the e side of Ash Valley Rd. (Lassen 527) 0.2 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  UC1037283  Dieteria canescens var. shastensis Leo Whitney 1933-8-21 1716 Lassen ca 14 mi w Eagle Lake (Harvey Mountain near Harvey Valley); Lassen National Forest, Harvey Mountain 1737 Comment
  UC1119608  Dieteria canescens var. shastensis H. S. Yates 1936-8-11 6077 Lassen near Johnstonville; Susanville Quad. Comment
  SFV18616  Dieteria canescens var. shastensis T. W. Nelson, J. P. Nelson 1990-7-14 8773 Lassen Bogard rest area. 1730 Comment
  UC86846  Dieteria canescens var. shastensis T. S. Brandegee Lassen Comment
  UCSB25961  Dieteria canescens var. shastensis Wilken, Dieter; Haller, John; Langford, A. 1968-9-12 Lassen Along California Highway 36, 11.2 miles east of Chester 1524 Comment
  CAS-BOT-BC209003  Digitaria sanguinalis John Thomas Howell 1976-7-19 51941 Lassen Susanville - Sierra Nevada 1296 Comment
  CAS-BOT-BC153678  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CHSC4812  Diplacus mephiticus R. Carter 1967-7-7 577 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  OBI76990  Diplacus mephiticus Anthony Baniaga 2011-7-5 418 Lassen Lassen Natl Forest. E of Willard Crk. Fredonyer Pass quad. T29N R10E sec 25 NE of NW 1503 Comment
  CDA31696  Distichlis spicata E. E. Fix, Agric. Comm. Sep 1951 Lassen 0 Comment
  CHSC13507  Distichlis spicata J. Pitts 1972-6-22 251 Lassen 150 yds. n of Eagle Lake Biology Station. Comment
  CHSC31978  Distichlis spicata L. Ahart; J. T. Howell 1974-7-9 536 Lassen Along rd, 5 mi w of Susanville. 1584 Comment
  UC573727  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock 1341 Comment
  UC60743  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley 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
  CHSC4945  Dodecatheon alpinum R. Carter 1967-6-23 549 Lassen 25 yds w of dam in Murrer's Meadow. Along rd to Murrer's Meadow. 1584 Comment
  UC444833  Dodecatheon alpinum Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek 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
  UC1951073  Dodecatheon conjugens Debra Valov 2009-4-25 2009018 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC559942  Dodecatheon conjugens Leo Whitney 1935-6-11 3225 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  SEINET8561548  Dodecatheon conjugens M. J. Williams 1969-5-24 s.n. Lassen Ca 0.5 mile N of Bogart Ranger Station. Comment
  CHSC6234  Dodecatheon jeffreyi M. West 1946-6-20 Lassen Meadow above Grasshopper Valley. 1828 Comment
  CHSC112464  Downingia bacigalupii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18738 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC23439  Downingia bacigalupii K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5807 Lassen Drying vernal pool area, e side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 Comment
  UC1520668  Downingia bacigalupii Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9462 Lassen 5.6 mi w U.S. Highway 395; Madeline Plains 1615 Comment
  UCD149940  Downingia bicornuta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  UC157671  Downingia bicornuta var. bicornuta Milo S. Baker Lassen near Eagle Lake Comment
  UC1609203  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen 1.9 mi n Highway 44 (Pittville Rd (Lassen 111, 36N01), se edge of Poison Lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  SEINET3147635  Downingia elegans M. E. Jones 1897-6-22 sn Lassen 10 mi S of Amedee 1219 Comment
  SEINET8733890 Image available Downingia elegans Helen K. Sharsmith 1955-1 4512 Lassen adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1219 Comment
  JEPS23858  Downingia insignis Peter H. Raven 1958-6-17 13282 Lassen 1.9 mi s Ravendale (along U.S. Highway 295) Comment
  JEPS3751  Downingia insignis Helen-Mar Wheeler 1952-7-11 Lassen s of Madeline Comment
  RSA128294  Downingia insignis P. H. Raven, Otto T. Solbrig 1958-6-17 13282 Lassen Along U.S. Hwy 395, 1.9 miles S of Ravendale. Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  UCR163273  Downingia insignis Jim Andre 1993-6-29 1410 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  CAS-BOT-BC266476  Downingia laeta Philip A. Munz 1947-5-20 11892 Lassen Milford 1264 Comment
  CHSC23440  Downingia laeta K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5805 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  POM312373  Downingia laeta Malcolm A. Nobs, S. Galen Smith 1949-7-20 1047 Lassen Bieber, along Hwy 299 Comment
  RSA0035918  Downingia laeta Lowell A. Ahart, John Dittes 2008-6-20 14928 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
  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
  CHSC68742  Draba verna var. verna Vernon H. Oswald; Lowell Ahart 1997-5-27 8522 Lassen Small impoundment on Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi northeast of Hwy. 139. 1731 Comment
  CHSC71081  Draba verna var. verna Vernon H. Oswald; Lowell Ahart 1998-5-22 9128 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Along a streamlet. 1463 Comment
  CHSC96701  Drosera anglica Gordon Leppig; J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. Peatland i ... Field redacted by CHSC, contact the data manager for more information 1970 Comment
  JEPS97330  Drosera anglica Vernon H. Oswald 1995-8-21 7216 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UCD99551  Drosera rotundifolia Barry Rice 2009-7-5 BR 090703 Lassen at Robbers Spring. Comment
  CAS-BOT-BC159341  Drymocallis lactea var. lactea Marcus E. Jones 1897-6-28 s.n. Lassen Perkin's Ranch, Diamond Mt., Susanville 2133 Comment
  CAS-BOT-BC159343  Drymocallis lactea var. lactea John Thomas Howell; Gordon H. True 1973-8-1 50224 Lassen East slope of Diamond Range south of Susanville - Sierra Nevada 2133 Comment
  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
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CHSC112411  Elatine Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18752 A Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS120867  Elatine Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18752 -A 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
  JEPS121286  Elatine Lowell Ahart, John Dittes 2013-7-22 18883 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. 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
  CHSC116193  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20299 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  UCR198140  Elatine chilensis Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  JEPS28331  Eleocharis acicularis George W. Gillett 1957-7-22 878 Lassen Snag Lake Lassen Volcanic National Park (margin of gravel bars along s shore) 1844 Comment
  JEPS87445  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1993-6-28 5599 Lassen n.e. Poison Lake (n. of Hwy. 44 at n.w. edge of Harvey Valley, Rd. 35N04 at Aspen Well); Harvey Valley, Aspen Well 1725 Comment
  UC1818  Eleocharis macrostachya J. Burtt Davy Jun 17-24 1897 3287 Lassen Honey Lake Valley, W end of lake Comment
  UC190417  Eleocharis macrostachya M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow, Dixey Valley Comment
  UCD55301  Eleocharis macrostachya Ellen Dean; Gary Schoolcraft 2006-5-16 3130 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  UCD54570  Eleocharis parvula Ellen Dean; Dawn Cunningham 2005-10-25 2753 Lassen East of the town of Susanville. Property N of California Correctional Facility. Western side of property. Extensive seasonal wetland system that was used until June 2005 as receiving area for geothermal heating system used by Correctional Facility and prison. 1248 Comment
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Oct 5 2010
  UC1100132  Elodea nuttallii Herbert L. Mason and Verne Grant 1947-7-9 13292 Lassen 5 miles east of Bieber Comment
  SEINET10565243  Elymus Paul Gallian, David B. Dunn 1971-6-2 Gallian 512 Lassen 6 mi 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-BC203831  Elymus X hansenii David D. Keck; J. Clausen 1935-6-24 3751 Lassen 2 mi. S. of Ravendale 1464 Comment
  UC506940  Elymus X saundersii George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassn <National> Forest 1737 Comment
  SEINET12737887  Elymus cinereus M. Church 2016-7-26 14 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1412 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  CAS-BOT-BC227493  Elymus elymoides John Thomas Howell 1934-6-10 11866 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  UC1924248  Elymus elymoides Debra Valov 2004-6-9 2004264 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC25916  Elymus elymoides subsp. elymoides K. R. Stern 1967-6-30 2446 Lassen West central side of Eagle Lake. 1554 Comment
  UC1137757  Elymus elymoides subsp. elymoides L. R. Short and Wm. Gansberg 1936-7-9 S- 477 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1783 Comment
  UC1567377  Elymus elymoides subsp. elymoides G. Schoolcraft 1989-6-19 1917 Lassen Ash Valley RNA/ACEC 1554 Comment
  UC53733  Elymus elymoides subsp. elymoides J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley 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
  CHSC111249  Elymus elymoides var. elymoides L. P. Janeway; B. Castro 2012-7-3 10943 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  UCD62558  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Susanville. In city park. Comment
  RSA0105549  Elymus spicatus L. P. Janeway, B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  UC1136821  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 230 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  UCD62664  Elymus trachycaulus L. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  CAS-BOT-BC204358  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1973-7-10 49776 Lassen Fredonyer Pass 1737 Comment
  CHSC115577  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2015-7-14 20332 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UCD62706  Elymus trachycaulus subsp. trachycaulus L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  LA6840  Ephedra viridis Carl Epling; William Robison 1935-7-15 sn Lassen Janesville Comment
  UC119065  Ephedra viridis Mrs. R. M. Austin 1876-7-1 285 Lassen e of Susanville; Antelope Grade Comment
  SEINET5335198  Ephedra viridis F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  HSC22866  Epilobium brachycarpum John Pratt 1970-6-14 17 Lassen Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  CHSC27121  Epilobium campestre Robert A. Schlising 1978-6-28 3296 Lassen E of Eagle Lake at Dry Lake. 1645 Comment
  JEPS127267  Epilobium campestre Lowell Ahart, John Dittes 2016-7-13 21128 Lassen 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121238  Epilobium ciliatum subsp. ciliatum Lowell Ahart, John Dittes 2013-7-22 18856 Lassen 30 yards S of the man-made pond, about 120 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  NY1001467  Epilobium ciliatum var. ciliatum M. A. Nobs 1949-8-20 1471 Lassen Honey Lake Valley, 1 mile south of Milford Comment
  JEPS124379  Epilobium densiflorum Lowell Ahart, John Dittes 2015-7-13 20307 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1567379  Epilobium densiflorum G. Schoolcraft 1989-7-18 1984 Lassen s Clark's Valley Rd. (near Box Spring) 1813 Comment
  JEPS39254  Epilobium hallianum Brown and Wieslander 1922-7-23 38 Lassen Martin Sprs. Eagle Lake 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
  SD219071  Epilobium pygmaeum R. F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395, ca. 5.0 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  JEPS127270  Epilobium torreyi Lowell Ahart, John Dittes 2016-7-13 21126 Lassen 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  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
  JEPS114954  Equisetum laevigatum Lowell Ahart, John Dittes 2008-6-20 14933 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
  JEPS88087  Equisetum laevigatum Vernon H. Oswald and Lowell Ahart 1996-6-17 7820 Lassen ca. 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, at 6 mi post of Devil's Corral Trailhead); Modoc Palteau 1420 Comment
  UC62615  Equisetum laevigatum Baker and Nutting 1894-7-5 Lassen <Dixay> Valley 1066 Comment
  RSA26289  Equisetum laevigatum Alice Eastwood, J. T. Howell 1940-6-11 7996 Lassen Bieber Comment
  SEINET10530259  Equisetum laevigatum Jeffrey Huber 1971-6-11 Huber 318 Lassen 3 mi E of Westwood, on CA Hwy 36; in volcanic soils (basalt), in Pinus jeffreyi. 1608 Comment
  JEPS124510 Image available Eremogone congesta Lynne C. Carter 1967-7-11 87 Lassen Willow Creek Campground, Modoc Natl. Forest, about 300 ft. up the ridge North of Ranger Station. Comment
  RSA0045087  Eremogone congesta Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 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
  CHSC66382  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1996-6-17 7798 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
  JEPS19760  Eriastrum signatum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6008 Lassen along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  SEINET14592139  Eriastrum signatum R. R. Halse 2004-7-21 6669 Lassen At junction of US Hwy 395 and State Road A 26, ca 11 miles SE of Milford. 1274 Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  SEINET7950669 Image available Ericameria nauseosa A. Onisko, J. Jaggers, S. Massed, D. Mathews 2011-10-24 NV 030 -669 Lassen NE of Doyle and NE of Fort Sage Mountains, OHV recreation area 1230 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
  CAS-BOT-BC298180  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel, on road to Janesville 1219 Comment
  CHSC66849  Ericameria nauseosa var. speciosa Vernon H. Oswald 1996-10-3 8295 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. On the edge of highway at Secret Creek. 1402 Comment
  JEPS103188  Erigeron G. Schoolcraft 2000-6-12 2901 Lassen West of Cold Springs Reservoir 1676 Comment
  UC87724  Erigeron aphanactis var. aphanactis unknown 1892-6-22 Lassen Honey Lake Comment
  SEINET8513560 Image available Erigeron bloomeri A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1090 Lassen Constantia Allotment, West of Peterson's 1490 Comment
  CAS-BOT-BC294489  Erigeron bloomeri var. bloomeri Ralph K. Gierisch 1968-7-11 3343 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC60815  Erigeron bloomeri var. bloomeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC99139  Erigeron bloomeri var. bloomeri Lowell Ahart; John Dittes 2008-6-19 14894 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
  UC1536740  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-27 559 Lassen near top Hot Spring Mt. 1828 Comment
  CHSC23483  Erigeron cervinus Wayne O. Baum 1971-7-12 71 -58 Lassen Slope of Gallatin Peak. 2042 Comment
  CAS-BOT-BC297146  Erigeron concinnus var. concinnus John Thomas Howell 1934-7-6 12439 Lassen Harvey Valley Comment
  CAS-BOT-BC297196  Erigeron coulteri Clare B. Hardham 1971-8-22 18398 Lassen Diamond Mountain 2133 Comment
  CHSC105252  Erigeron divergens Lowell Ahart; John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 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-BC296846  Erigeron divergens John Thomas Howell 1973-7-10 49773 Lassen Near Westwood, Sierra Nevada 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
  JEPS95073  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  CHSC72297  Erigeron filifolius L. P. Janeway; Glenn Clifton 1998-7-9 5739 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  UCR244069  Erigeron filifolius var. filifolius Jim Andre, G. L. Clifton 1993-6-9 19695 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC295182  Erigeron inornatus John Thomas Howell 1974-7-10 50561 Lassen Elysian Valley 1325 Comment
  SBBG8113  Erigeron inornatus H. and M. Dearing 1938-7-1 2236 Lassen Susanville Comment
  CHSC65089  Erigeron inornatus var. calidipetris Vernon H. Oswald; Lowell Ahart 1995-7-24 7146 Lassen Cascade Range. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. Edge of the road. 1905 Comment
  UC1136838  Erigeron inornatus var. inornatus L. R. Short and D. Gish 1936-8-3 S- 397 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1795 Comment
  UC584244  Erigeron lassenianus var. lassenianus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2264 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties) Comment
  UC31511  Erigeron linearis Mrs. C. C. Bruce 1898-6-1 2182 x Lassen Madeline plains Madeline Comment
  CHSC12615  Erigeron philadelphicus Jannae Pitts 1972-6-23 265 Lassen On the road to Eagle Lake Field Station, 2 mi se of the station on the e side of the road. Comment
  POM32998  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  JEPS117505  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
  CAS-BOT-BC300122  Erigeron pumilus var. intermedius Alice Eastwood; John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC86949  Erigeron pumilus var. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  JEPS93827  Erigeron pumilus var. intermedius Vernon H. Oswald and Lowell Ahart 1998-6-4 9139 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UC1609097  Erigeron pumilus var. intermedius Vernon H. Oswald and Lowell Ahart 1993-6-28 5578 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  SBBG128042  Erigeron pumilus var. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen ca. 3330 feet N of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  UCD18963  Erigeron pumilus var. intermedius R. E. Francis 1965-7-7 8 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 Comment
  CAS-BOT-BC241570  Eriogonum baileyi var. baileyi John Thomas Howell 1955-7-19 30817 Lassen East side of Beckwourth Pass 1493 Comment
  CAS-BOT-BC244039  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen Between Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC241834  Eriogonum caespitosum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 2 1/2 miles north of Secret Valley, C.C.C. Camp, U.S. Hy. 395 Comment
  CAS-BOT-BC241837  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N. LItchfield, 26.6 mi S Ravendale 1310 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
  CAS-BOT-BC246502  Eriogonum douglasii var. meridionale Doris Kildale Gillespie 1930-5-13 9361 Lassen Between Susanville and Janesville Comment
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC85900  Eriogonum douglasii var. meridionale T. S. Brandegee 1872-1 Lassen Susanville Comment
  CAS-BOT-BC263045  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  UC1949280  Eriogonum marifolium Barbara Ertter 1988-7-25 7862 Lassen ridge of Diamond Mts ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville Comment
  CAS-BOT-BC267344  Eriogonum marifolium var. marifolium G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2289 Lassen East slope of Thompson Peak, south of Janesville 2346 Comment
  RSA518445  Eriogonum microtheca var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  RSA78918  Eriogonum microtheca var. laxiflorum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  NY281555  Eriogonum microthecum var. laxiflorum E. K. Balls 1952-10-10 18143 Lassen In Northern Juniper Woodland, 8 mi. s.e. of Ravendale, Hwy 395, between Susanville and Alturas. 1280.2 Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  UC585235  Eriogonum microthecum var. laxiflorum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1753 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UC85948  Eriogonum microthecum var. laxiflorum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UCD13226  Eriogonum nudum Janet Browder 1973-6-3 98 Lassen Lassen CO. Eagle Lake recreation Area, County Road 201, 1 mile north of airport. Elevation 5100 feet. 1554 Comment
  JEPS117368  Eriogonum nudum var. nudum Lowell Ahart, John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  SBBG94822  Eriogonum nudum var. nudum G. K. Helmkamp 1990-9-23 G- 11 Lassen N of Ravendale 1676 Comment
  SD13333  Eriogonum nudum var. nudum R. V. Chamberlain 1935-9-8 6584 Lassen Guernsey Creek Comment
  JEPS56616  Eriogonum nudum var. pubiflorum Joseph Grinnell 1928-6-26 Lassen Cinder Cone 2103 Comment
  UC1032183  Eriogonum nudum var. pubiflorum H. P. Hagge 1929-9-11 17 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC1542950  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1758 Lassen Hayden Hill, old town site 1737 Comment
  UCR17292  Eriogonum nudum var. pubiflorum Frank C. Vasek 1975-7-11 750711- 40 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  OBI76967  Eriogonum nudum var. pubiflorum Anthony Baniaga 2011-8-3 484 Lassen Lassen Natl Forest. Along hwy 44, @ of 31N21. Pine Crk Valley quad T31N R8E sec 10 SE of SE 1800 Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  RSA0039349  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, ca. 2 air miles north of peak of Turtle Mountain. 1255 Comment
  SBBG65173  Eriogonum ovalifolium S. W. Hutchinson -Jun-1925 Lassen Eagle Lake to Caribou Lake 1828 Comment
  CHSC64886  Eriogonum ovalifolium var. ovalifolium Vernon H. Oswald; Lowell Ahart 1995-6-19 6889 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. On a slope on the s side of the road at Mud Flat. 1350 Comment
  CAS-BOT-BC258146  Eriogonum prociduum var. prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W. of Madeline on rd. from Adin 1676 Comment
  CHSC12948  Eriogonum prociduum var. prociduum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5813 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  NY283074  Eriogonum spergulinum var. reddingianum R. F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  RSA713122  Eriogonum spergulinum var. reddingianum L. P. Janeway, B. Castro 2005-7-10 8483 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 and 28N02) and Road 28N01. 1859 Comment
  UCR248329  Eriogonum sphaerocephalum Elizabeth A. Kempton 2007-8-15 512 Lassen Near Basehill landfill 1282 Comment
  CHSC25314  Eriogonum sphaerocephalum var. halimioides Pauleen Broyles 1977-6-1 165 Lassen Spencer Basin, 8 km n of Herlong. 1770 Comment
  CHSC71393  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen Shugru Reservoir in Bass Hill WA on Hwy. 395 between Susanville and Janesville, 2.7 mi southeast of Hwy. 36. Roadside flat. 1243 Comment
  CHSC86947  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7190 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  JEPS93796  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen 2.7 mi se of Highway 36 (Shugru Reservoir in Bass Hill [WA] on Highway 395 between Susanville and Janesville); Shugru Reservoir, Bass Hill 1243 Comment
  UC1226260  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 mi s Adin Comment
  SEINET530688  Eriogonum strictum Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  NY283239  Eriogonum strictum subsp. proliferum H. D. D. Ripley 1943-6-13 5711 Lassen South of Johnstonville 1325.9 Comment
  CAS-BOT-BC262742  Eriogonum strictum var. anserinum H. D. Ripley; R. C. Barneby 1944-5-30 5965 Lassen Secret Valley 1554 Comment
  CHSC13455  Eriogonum strictum var. anserinum J. Pitts 1972-6-22 248 Lassen 70 yds. n of Eagle Lake Biology Station. Comment
  JEPS93829  Eriogonum strictum var. anserinum Vernon H. Oswald and Lowell Ahart 1998-6-4 9147 Lassen s of Constantia (Spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  RSA768778  Eriogonum strictum var. anserinum L. Ahart, John Dittes 2010-7-31 16989 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1511 Comment
  NY283167  Eriogonum strictum var. anserinum G. Schoolcraft 1983-7-12 1085 Lassen Southeast slopes of Shinn Mountains, 32-16-5 SW 1828.8 Comment
  UC1249283  Eriogonum strictum var. anserinum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8473 Lassen 50 mi se Susanville 1371 Comment
  CAS-BOT-BC262769  Eriogonum strictum var. proliferum H. D. Ripley; R. C. Barneby 1943-6-13 5711 Lassen South of Johnstonville 1325 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
  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
  RSA0025577  Eriogonum umbellatum John F. Emmel 1996-7-14 1427 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. Comment
  CAS-BOT-BC267816  Eriogonum umbellatum var. covillei Annie M. Alexander; Louise Kellogg 1942-8-21 3356 Lassen Below Golden Trout Resort, Cottonwood Creek, Cottonwood Lakes, southwest of Lone Pine, Sierra Nevada Comment
  JEPS56226  Eriogonum umbellatum var. modocense W. L. Jepson 1910-6-10 4115 Lassen King Creek 1676 Comment
  JEPS94469  Eriogonum umbellatum var. modocense Vernon Oswald and Lowell Ahart 1997-6-24 8640 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CAS-BOT-BC265092  Eriogonum umbellatum var. nevadense John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50673 Lassen Summit ridge of Diamond Mt., Sierra Nevada 2346 Comment
  CHSC68902  Eriogonum umbellatum var. nevadense Vernon Oswald; Lowell Ahart 1997-6-24 8640 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  POM105088  Eriogonum umbellatum var. nevadense Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA715993  Eriogonum umbellatum var. nevadense L. Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  UC1483832  Eriogonum umbellatum var. nevadense G. Schoolcraft 1979-7-5 126 Lassen 5.2 mi. from Horne Ranch Road (intersection up Observation Lookout Road) 2286 Comment
  CAS-BOT-BC265098  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-12 1 -83 Lassen On Sears Road near Janesville, Sierra Nevada Comment
  JEPS117588  Eriogonum umbellatum var. polyanthum Lowell Ahart, John Dittes 2010-7-31 16988 Lassen About 2300 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
  POM105077  Eriogonum umbellatum var. polyanthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC6403  Eriogonum ursinum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CHSC6228  Eriogonum vimineum 1943-8-31 Lassen Susanville. Eagle Lake. 1297 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
  JEPS56158  Eriogonum vimineum W. L. Jepson 1918-8-5 7817 Lassen Madelin Plains 1615 Comment
  UC1982142  Eriogonum vimineum Elizabeth Kempton 2007-8-15 511 Lassen Janesville, intersection of 395 and Sunnyside Rd. Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  UC526153  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 mi s Omira Comment
  CAS-BOT-BC262360  Eriogonum vimineum H. D. Ripley; R. C. Barneby 1943-6-15 5763 Lassen N.-E. of Viewland 1341 Comment
  SDSU7202  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2.0 Miles north of Janesville. 1219 Comment
  HSC28818  Eriophyllum lanatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19256 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC308137  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  CDA5861  Eriophyllum lanatum var. achilleoides Gary Schoolcraft 1991-7-3 2199 Lassen East slope of widow mountain. Comment
  UC1393123  Eriophyllum lanatum var. achilleoides John L. Strother 1970-5-23 956 Lassen about 6 mi n of Honey Lake 1280 Comment
  CHSC59683  Eriophyllum lanatum var. integrifolium Mary Meyer 1980-5-7 Lassen Mesa between Pete's Creek. 1447 Comment
  PASA2212  Eriophyllum lanatum var. integrifolium Frank W. Peirson 1926-6-24 Lassen Several miles southward from the Madeline Plain Comment
  JEPS124540 Image available Erodium cicutarium Laurel Loeblich 1964-6-30 58 Lassen 19 mi. north of Halleluja Junction (highways 40 and 395) on 395; 1 1/2 mi. south of Doyle. Comment
  UC1508837  Eryngium alismifolium Gary Schoolcraft 1981-8-11 558 Lassen Silva Flat Reservoir 1706 Comment
  UC648306  Eryngium alismifolium John Thomas Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  SEINET8340800  Erythranthe floribunda Unknown 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) northweast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC14065  Erythranthe primuloides J. Grove 1973-7-25 Lassen Collected at Collemans Lake along fill dam of lake. 1524 Comment
  SEINET10933162  Erythronium purpurascens Hall 1993-6-29 Hall 4294 Lassen Plants of Mount Lassen. Soupen Springs. 8000 feet. 2440 Comment
  SFV18615  Eschscholzia caespitosa T. W. Nelson, J. P. Nelson 1990-7-14 8777 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  CAS-BOT-BC403151  Eschscholzia californica Ira L. Wiggins; Dorothy B. Wiggins 1961-6-16 165311 Lassen Along Highway 299, overlooking Big Valley 1249 Comment
  CDA3709  Euclidium syriacum Lee Wheeler 1955-6-24 Lassen Bieber area. 0 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
  CDA14324  Euphorbia crenulata B. Corbin 1998-7-23 s.n. Lassen Lassen National Forest; Hwy 36, immed. E of junction w/Hwy 147, on Lassen NF. 0 Comment
  SEINET12143360  Euphorbia serpillifolia Unknown 1978-1 103 Lassen along dirt road near Miners Point, SE end of Eagle Lake 1585 Comment
  CHSC64874  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1995-6-19 6881 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  RSA324236  Euphorbia spathulata A. Tiehm, James Young, Raymond Evans 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  CHSC117511  Euphorbia virgata Lowell Ahart; John Dittes 2016-7-13 21118 Lassen Along the drainage, about 100 yards south of the pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  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
  UC1024811  Festuca idahoensis Leo Whitney 1935-6-17 3268 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1776694  Festuca idahoensis G. Schoolcraft 1994-7-7 2374 Lassen About 1.5 mile NW of Boot Lake 2407 Comment
  UC60788  Festuca idahoensis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  UCD65977  Festuca idahoensis L. Whitney 1935-6-23 3295 Lassen Fruit Growers Supply Co. Camp #10. Comment
  UC53432  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
Read comments
Jun 24 2009
  CAS-BOT-BC278932  Festuca rubra John Thomas Howell 1934-7-6 12458 Lassen Harvey Valley Comment
  JEPS95107  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1997-6-24 8650 Lassen s of Susanville just s of small ond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout Red Rock Lookout; crest of Diamond Mountain 2249 Comment
  SEINET10852446  Frangula rubra Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 156 Lassen Lassen National Forest. 5.6 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1980 Comment
  HSC26683  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19251 Lassen Harvey Valley near Cone Springs Comment
  UC1134589  Fritillaria atropurpurea K. E. Bradshaw 1939-3-27 232 Lassen s end of Black Mountain Experimental Forest, Lassen National Forest Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1752 Comment
  CHSC42207  Fritillaria pudica Kimber Hostetter 1986-3-26 1 Lassen Eagle Lake Field Station, Eagle Lake, ca. 17 km nw of Susanville. Ca. 0.5 km n of korm of CSUC field station. 1700 Comment
  CAS-BOT-BC508129  Fritillaria recurva Mrs. A S. Baldwin 1928-5-10 318 Lassen Coyote Flat. Over ridge from Dixie Valley Comment
  SEINET3886822  Fritillaria recurva J. P. Smith, J. O. Sawyer 1972-5-6 5235 a Lassen Lassen National Forest; Boundary Campground on State Route 89 south of Burney.; 0 1067 Comment
  CHSC4902  Galium aparine Bill Wilson 1967-6-23 18 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville. 1584 Comment
  CHSC68871  Galium bifolium Vernon Oswald; Lowell Ahart 1997-6-24 8606 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  UC773944  Galium bifolium L. R. Short and W. Gansberg 1926-6-2 S- 368 Lassen Lassen National Forest 1850 Comment
  SEINET11616108  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  POM69200  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1479580  Galium multiflorum G. Schoolcraft 1980-6-6 253 Lassen sw Herlong; Bird Canyon area 1341 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  UC1025088  Galium trifidum Leo Whitney 1934-7-27 1745 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  RSA201323  Galium trifidum var. pusillum J. T. Howell 1959-9-23 34886 Lassen end of Juniper Lake. 2058 Comment
  CAS-BOT-BC478878  Gayophytum John Thomas Howell; Gordon H. True 1973-8-1 50206 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2164 Comment
  HSC87162  Gayophytum diffusum J. D. Prouty 1978-6-27 1 Lassen E of Eagle Lake, Black Mt. Rd., SE of Eagle Lake Field Station 1616 Comment
  CHSC29860  Gayophytum diffusum subsp. parviflorum Robin L. Ondricek 1978-6-26 70 Lassen .5 mi n of jct. with 5.16 on road to ELFS. 1572 Comment
  POM38695  Gayophytum heterozygum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1137771  Gayophytum heterozygum August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  RSA144899  Gayophytum heterozygum J. W. MacSwain 1959-8-12 59 -148 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  UCSB64021  Gayophytum humile Ahart, Lowell; Howell, John 1974-7-9 Lassen Near S edge of Eagle Lake 1584 Comment
  CHSC6191  Gayophytum ramosissimum R. Gein 1946-6-12 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  SEINET4172075  Gayophytum ramosissimum M. J. Williams 1974-7-26 74 - L-32 Lassen 2 mi. west of Hallelujah Junction, south of Hwy 70 1494 Comment
  HSC8435  Gentiana newberryi Fred J. Kindel 1955-8-1 Lassen Mt. Meadows Reservoir Comment
  NY1101445  Geranium viscosissimum var. nervosum B. M. Bartholomew 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains. 2080 Comment
  CAS-BOT-BC143569  Geum triflorum Clarence Quick 1963-7-12 63 -34 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CHSC68869  Geum triflorum Vernon Oswald; Lowell Ahart 1997-6-24 8649 Lassen South of Susanville at the pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 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
  UC477497  Geum triflorum A. G. Brenneis 1928-7-3 14 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  POM72193  Gilia congesta Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  JEPS94632  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen spur road on n side of Red Rock Rd. 0.6 mi e Hwy. 395 (s of Constantia) 1389 Comment
  CAS-BOT-BC523867  Gilia modocensis Doris Kildale Gillespie 1930-5-12 9326 Lassen 2 mi N of Susanville on road to Alturas Comment
  CHSC64800  Gilia salticola Vernon H. Oswald 1995-5-31 6816 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  HSC95215  Glyceria borealis Gordon Leppig 1998-7-13 974 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  HSC95337  Glyceria borealis Gordon Leppig, J. Cromwell 1997-7-27 624 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  JEPS96135  Glyceria borealis Vernon H. Oswald and Lowell Ahart 1996-6-24 7872 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  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
  CHSC77264  Glyceria elata G. Schoolcraft 1997-7-30 2614 Lassen W facing slope of Diamond Mtn. 1950 Comment
  HSC29999  Gnaphalium palustre D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19276 Lassen Harvey Valley near Cone Springs Comment
  JEPS117581  Gnaphalium palustre Lowell Ahart, John Dittes 2010-7-31 16995 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  UC1536868  Gnaphalium palustre G. H. True Jr. 1938-7-14 956 Lassen near Janesville 1280 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
  JEPS28800  Gratiola ebracteata George W. Gillett 1957-9-4 1126 Lassen e margin Widow Lake (near inlet, Lassen Volcanic National Park); Lassen Volcanic National Park, e margin Widow Lake 2072 Comment
  CDA23423  Grayia spinosa Robin Breckenridge 2007-5-1 PDR# 1349824 Lassen Wendel. 0 Comment
  JEPS29750  Grayia spinosa Rimo Bacigalupi and L. R. Heckard 1962-5-28 8504 Lassen n. of Honey Lake (2 mi. e. of Wendel junction on rd. from U.S. 395 past Flanagan to Pyramid Lake -Nevada) 1219 Comment
  UC1136433  Grayia spinosa E. Sawyer 1935-6-27 225 Lassen Long Valley Sierraville Quad., Long Valley Comment
  SEINET5709434 Image available Grindelia squarrosa Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7709 Lassen Willow Creek. Collected along CA 139.; Willow Creek 1428 Comment
  CDA36783  Gypsophila paniculata D. B. Joley 1976-6-22 1 Lassen Janesville. 0 Comment
  SEINET10837176  Hackelia bella Katherine L. Morris 1973-5-25 Morris 245 Lassen Collected 13.7 mi NW of the junction of Hwy 36 & 44 on Hwy 44, in an area of yellow pine, fir and Ribes. Comment
  UC1035983  Hackelia californica Helen K. Sharsmith 1955-6-27 4517 Lassen n of Hat Creek Ranger Station (forest adjacent to Highway 89); Lassen National Forest 1158 Comment
  SBBG63470  Hackelia velutina E. Rockwell -Jun-1925 53 Lassen Eagle Lake 1554 Comment
  CDA3153  Halogeton glomeratus E. E. Fix Jun 1948 Lassen Western Railroad right-of-way. 0 Comment
  RSA97952  Halogeton glomeratus J. L. Myler, Les Berry 1954-8-17 s.n. Lassen Karlo. Comment
  POM359823  Helianthella californica var. nevadensis L. S. Rose 1933-7-2 33268 Lassen Westwood. 1524 Comment
  CHSC43613  Helianthus annuus Vernon Oswald 1986-8-7 2274 Lassen Hwy 36, 15.7 mi e of the Lassen-Plumas County line, 1.7 mi sw of the Susan River. Roadside. 1447 Comment
  CAS-BOT-BC305409  Helianthus annuus John Thomas Howell; G. H. True 1973-7-31 50143 Lassen Janesville 1295 Comment
  CAS-BOT-BC305661  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC64756  Helianthus cusickii Vernon H. Oswald 1995-5-31 6798 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  SJSU14474  Helianthus cusickii W. D. Pitts 1990-5-29 299 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  CAS-BOT-BC305663  Helianthus cusickii Elmer I. Applegate 1934-5-4 8927 Lassen South of Secret Valley Comment
  CAS-BOT-BC305665  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen On the grade east of Mapes on U. S. Highway #395 1371 Comment
  RSA38474  Helianthus cusickii P. A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale. 1311 Comment
  SD64346  Helianthus nuttallii Darley F. Howe 1966-8-26 4303 Lassen Modoc-Lassen County Line, east of Warner Mountains. 1340 Comment
  UCD142986  Heliotropium curassavicum Richard R. Halse 2010-8-25 8086 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  UCD73908  Heliotropium curassavicum var. oculatum Rebecca Epanchin-Niell 2001-6-14 44 Lassen Jay Dow, Sr. Wetlands (owned by University of Nevada, Reno) on the south side of Honey Lake. Comment
  SEINET8734813 Image available Hemizonia pungens subsp. pungens Unknown 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  HSC29978  Hesperochiron californicus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19191 Lassen Harvey Valley near Cone Springs Comment
  NY1082478  Hesperochiron californicus N. H. Holmgren 1978-6-11 8910 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
  RSA0128926  Hesperochiron californicus Christopher Davidson 1975-6-6 2719 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  SEINET5498645  Hesperochiron californicus D. E. Brix 1962-5-2 s.n. Lassen Spring 2 miles from Junction of Red Rock Rd. and Hwy 395 1433 Comment
  CHSC117516  Hesperolinon micranthum Lowell Ahart; John Dittes 2016-7-13 21123 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC65038  Hesperolinon micranthum Vernon H. Oswald; Lowell Ahart 1995-7-5 6957 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  CHSC23522  Hesperostipa comata subsp. intermedia Wayne O. Baum 1971-7-12 71 -67 Lassen E. slope of Gallatin Peak. 1950 Comment
  POM68265  Heterocodon rariflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1776666  Heterocodon rariflorum G. Schoolcraft 1996-7-17 2538 Lassen Moll Reservoir W of Ash Valley 1615 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
  CHSC50819  Heterotheca villosa var. minor Vernon Oswald; Lowell Ahart 1990-7-25 4397 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. Roadside. 1463 Comment
  NY783473  Heuchera rubescens B. J. Ertter 1987-6-16 7201 Lassen Skeedaddle Mountains on northeast side of Honey Lake; between Hot Springs Peak and VABM 2255.5 Comment
  POM36066  Hieracium albiflorum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC477493  Hieracium albiflorum A. G. Brenneis 1928-7-3 8 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  UC1069594  Hieracium argutum H. P. Hagge 1929-9-18 39 Lassen Logan Mountain Eagle Lake Quad., Logan Mountain Comment
  CAS-BOT-BC318713  Hieracium horridum Wm. Bridge Cooke 1938-9-17 11703 Lassen Canyon below Horse Camp, Mount Shasta 2133 Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  UC32790  Hieracium horridum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC318715  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  CHSC66720  Hieracium scouleri var. nudicaule Vernon H. Oswald; Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road. 2011 Comment
  CHSC75503  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1999-6-9 9737 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395, springy marsh surrounded by sagebrush scrub. 1353 Comment
  CAS-BOT-BC150128  Holodiscus microphyllus var. glabrescens P. Monnet 1913-7-4 802 Lassen Hot Springs Peak Comment
  CHSC6255  Holodiscus microphyllus var. glabrescens M. West 1946-7-7 Lassen Cone Lake near east border of Lassen Nat. Park. 1828 Comment
  POM91032  Holodiscus microphyllus var. glabrescens Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC99281  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2008-6-20 14922 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
  UCD85482  Hordeum brachyantherum L. Whitney 1935-3-28 Lassen Fruit Growers Supply Co. Camp #10. Comment
  UC1024802  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1935-6-23 3291 Lassen Camp 10 Fruit Grower's Supply Company Lassen National Forest Comment
  CAS-BOT-BC284715  Hordeum jubatum John Thomas Howell 1976-7-20 52034 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  JEPS114836  Hordeum jubatum Lowell Ahart, John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  SEINET10591500  Hordeum jubatum Vernon H. Oswald, Lowell Ahart 1995-8-14 Oswald 7189 Lassen T33N R14E S2 NE1/4, Modoc Plateau, sagebrush scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Growing in moist soil along the margin of a large roadside pond. 1646 Comment
  UC1924232  Hordeum murinum subsp. leporinum Debra Valov 2004-6-9 2004262 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC36189  Horkelia fusca subsp. parviflora M. S. Taylor; B. Hammond 1982-7-8 4789 Lassen Along spur rd ca. 1/3 mi w of Scott Rd, ca. 1.5 mi ne of Beckwourth Pass. 1463 Comment
  UC1483792  Horkelia fusca subsp. tenella Teresa Prendusi 1980-7-1 Lassen Littel Antelope Valley, Bureau of Land Management 1676 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-BC213002  Hosackia crassifolia Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  SEINET5518818  Hydrophyllum occidentale var. watsonii C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  POM95280  Hymenolobus procumbens Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  POM66398  Hymenoxys lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UCD20362  Hymenoxys lemmonii Joe DiTomaso 2002-6-4 s.n. Lassen about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Comment
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Apr 29 2013
  POM86608  Hypericum formosum var. scouleri Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  UC908152  Ipomopsis aggregata Loyd Swift 1928-6-12 Lassen Hall's Flat Lassen National Forest Comment
  CHSC13883  Ipomopsis aggregata subsp. formosissima S. Villard 1973-7-12 65 Lassen Gallatin Peak. 1066 Comment
  CHSC4936  Iris missouriensis A. E. Anderson 1967-5-24 33 Lassen In Murrer's Upper Meadow, 4 mi. se Eagle Lake Biological Sta. 1554 Comment
  CAS-BOT-BC69981  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake Campground, Lassen Park. 2057 Comment
  UC2062875  Isoetes nuttallii Forrest Freund 2016-5-18 256 Lassen Side of Highway 44. Comment
  JEPS127206  Isoetes orcuttii Lowell Ahart, John Dittes 2016-6-7 21016 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  HSC42417  Iva axillaris Barbara Kelly 1977-8-9 577 Lassen At a large mining tailing a few mi. N of Termo (7.9 mi. S of Madeline) at Rod and Gun Club Road. Comment
  RSA126721  Iva axillaris subsp. robustior Peter H. Raven, Otto T. Solbrig 1958-6-17 13265 Lassen Along Hwy 395, 11.8 miles NE of Litchfied Comment
  RSA523308  Iva axillaris subsp. robustior Gordon H. True Jr. 1936-6-21 517 Lassen SE of Litchfield, Honey Lake Valley. 1220 Comment
  UC1037332  Iva axillaris subsp. robustior Leo Whitney 1934-9-5 1958 Lassen Fredonyer Pass; Lassen National Park 1676 Comment
  JEPS94475  Ivesia paniculata Vernon H. Oswald and Lowell Ahart 1997-5-27 8494 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 n side of a creek paralleling the road); Forest Route 38N04 1546 Comment
  SEINET4855366  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  JEPS109644  Ivesia sericoleuca Dean W. Taylor 2002-6-21 18168 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  CAS-BOT-BC109934  Juncus John Thomas Howell 1976-7-19 51971 Lassen Sierra Nevada. On Gold Creek southwest of Susanville. 1386 Comment
  SEINET7421696 Image available Juncus balticus A. L. Hormay 1941-1 25441 Lassen Sec. 31, T 33N, R 9 E, Little Harvey Valley. Altitude 5500 ft. 2007 Comment
  GMDRC7742  Juncus balticus subsp. ater J. M. Andre, G. Clifton 1993-6-11 33423 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  JEPS121288  Juncus balticus subsp. ater Lowell Ahart, John Dittes 2013-7-23 18903 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1583258  Juncus bufonius Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9467 Lassen 5.6 km (3.5 mi) s Madeline (along Highway 395); Madeline Plains 1620 Comment
  JEPS127272  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2016-7-13 21140 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
  JEPS114384  Juncus bufonius var. congestus Lowell Ahart, John Dittes 2008-6-20 14958 Lassen In meadow, around a new pond, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC60863  Juncus bufonius var. occidentalis Vernon H. Oswald; Lowell Ahart 1993-6-28 5598 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC1136937  Juncus confusus L. R. Short and J. Warren 1936-6-10 S- 418 Lassen Burgess Spr. Exp. Range Lassen Forest 1856 Comment
  UC1137590  Juncus confusus A. Simontacchi 1940-7-3 918 Lassen 3.4 mi wsw Harvey Mtn. Lookout; Halls Flat Quad. 1828 Comment
  CHSC68886  Juncus hemiendytus var. hemiendytus Vernon Oswald; Lowell Ahart 1997-6-24 8653 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. Meadow. 2249 Comment
  CDA33210  Juncus macrandrus T. C. Fuller 1959-7-6 5018 Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  CAS-BOT-BC110769  Juncus mertensianus Clare B. Hardham 1969-8-28 17441 Lassen Sierra Nevada. West of Janesville. Comment
  JEPS87450  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  UC1133633  Juncus nevadensis H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow Susanville 1524 Comment
  SEINET3881686  Juncus sphaerocarpus Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville.; 0 Comment
  CHSC87114  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  HSC1271  Juniperus occidentalis R. H. Berg 1963-4-6 37 Lassen 10 mi. N of Susanville Comment
  SEINET3864776 Image available Juniperus occidentalis Stanley L. Welsh, N. Duane Atwood 2001-6-13 28123 Lassen Ca. 2 mi n of jct of Hwy 395 and Hwy 70, e of Beckwourth Pass.; 0 1575 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
  UCR162426  Juniperus occidentalis subsp. australis David A. Charlet 1991-8-7 909 Lassen East shore of Eagle Lake 1616 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
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA719706  Juniperus occidentalis var. occidentalis Michael A. Vincent, K. Levings 2006-7-29 12922 Lassen Along Rt. 395 pull-off, 3.1 miles north of Rt. 70, 7.7 miles north of Sierra County line Comment
  SEINET11056685  Juniperus occidentalis var. occidentalis D. Charlet 1994-7-6 1923 Lassen Susanville, corner of Main and Fair Streets. 1292 Comment
  UCR3792  Juniperus occidentalis var. occidentalis Frank C. Vasek 1964-9-13 640913- 01 Lassen Warner Mtns., c. 1 mi east of Blue Lake Comment
  SEINET11056886  Juniperus occidentalis var. occidentalis D. Charlet 1993-7-13 1582 Lassen Fort Sage Mountains, along road W of OHV trailhead. 1450 Comment
  CHSC6262  Kelloggia galioides W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 Comment
  SJSU11548  Kelloggia galioides J. W. Tilden 1960-6-27 1496 Lassen Westwood 1554 Comment
  UC303069  Kelloggia galioides Pearl Safford Lassen Susanville [uncertain locality] Comment
  UCD18974  Kelloggia galioides Raymond D. Ratliff 1965-7-29 34 Lassen Lassen National Forest, Lower Pine Creek Allotment (LPC 13-2). 1719 Comment
  UC1483872  Kochia americana G. Schoolcraft 1980-5-8 231 Lassen s. end Cal-Neva Lake 1219 Comment
  CHSC89746  Koeleria macrantha L. P. Janeway 2004-6-26 8149 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
  UC1024754  Koeleria macrantha Leo Whitney 1933-8-9 2298 Lassen ca 25 mi w of upper end of Eagle Lake Hall's Flat; Lassen National Forest, w of upper end of Eagle Lake 1737 Comment
  UC163604  Koeleria macrantha Milo S. Baker Lassen flat near Eagle Lake; flat near Eagle Lake Comment
  UCD86010  Koeleria macrantha L. Whitney 1935-6-24 3300 Lassen Squaw Valley, CA. 13 miles west of north end of Eagle Lake. Comment
  CAS-BOT-BC271328  Koeleria pyramidata Gary Schoolcraft 1983-6-29 1042 Lassen Along Hwy 139 near Upper McBride Sp. 1889 Comment
  CHSC59133  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1992-8-25 5195 Lassen Lassen Volcanic National Park. Slope at the SE corner of Snag Lake. 1853 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
  CAS-BOT-BC341487  Lagophylla ramosissima John Thomas Howell 1973-8-1 50156 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  JEPS38999  Lagophylla ramosissima W. L. Jepson 1918-8-2 7776 Lassen Bedswith Pass 1463 Comment
  JEPS88243  Lagophylla ramosissima Vernon H. Oswald and Lowell Ahart 1996-6-17 7782 Lassen ca. 7 mi w Susanville (along Bizz Johnson Trail at 7 mile post on n side of Hwy 36 between trail and highway bridges spanning Susan River); Modoc Plateau 1432 Comment
  UC33057  Lagophylla ramosissima M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  RSA0035916  Lasthenia glaberrima Lowell A. Ahart, John Dittes 2008-6-20 14901 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS108558  Lathyrus nevadensis var. nevadensis L. P. Janeway 2005-7-3 8451 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
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 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
  CHSC60718  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  CHSC67171  Layia glandulosa James D. Jokerst 1991-5-29 3311 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  CAS-BOT-BC321491  Layia glandulosa Milo S. Baker 1936-6-16 8360 Lassen About 30 mi N of Susanville along Hwy 395. Comment
  CAS-BOT-BC321495  Layia glandulosa M. S. Taylor 1982-5-29 4571 Lassen 500 yds NE of the jct of Hwy 70 with Hwy 395 at Hallelulia Jct, ca 23 mi N of Reno. 1524 Comment
  CDA8139  Layia glandulosa Vernon H. Oswald & Lowell Ahart 1998-6-4 9143 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. 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
  CHSC66278  Lemna trisulca Vernon H. Oswald; Lowell Ahart 1996-6-24 7884 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 meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  RSA318598A  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC71871  Lepidium appelianum Vernon H. Oswald; Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Roadside. 1258 Comment
  JEPS114944  Lepidium chalepense Lowell Ahart, John Dittes 2008-6-20 14978 -B Lassen Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET5342390  Lepidium dictyotum A. Tiehm 1980-1 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231 Comment
  CDA37688  Lepidium latifolium Robin Breckenridge 2004-7-1 s.n. Lassen East of Susanville. 0 Comment
  RSA716267  Lepidium perfoliatum L. Ahart, John Dittes 2005-6-2 11920 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
  CAS-BOT-BC12812  Lepidium perfoliatum Margaret Williams 1974-7-27 74 -L-48 Lassen Sierra Nevada. Near Hallelujah Junction west of Highway 70. 1493 Comment
  HSC6828  Lepidium perfoliatum K. P. St. John 1965-5-6 28 Lassen Susanville, across from Walker's Restaurant 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
  CAS-BOT-BC334598  Leucanthemum vulgare G. Schoolcraft 1987-6-17 1746 Lassen Along Hwy 36 about 3 miles east of Westwood 1554 Comment
  CHSC68773  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1997-5-27 8509 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  HSC30081  Leucocrinum montanum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19264 Lassen Harvey Valley near Cone Springs Comment
  JEPS87460  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  CAS-BOT-BC508369  Leucocrinum montanum Louella Bass 1973-4-29 31 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  OBI77050  Leucocrinum montanum Anthony Baniaga 2011-5-31 295 Lassen Lassen NF. Off hwy 44, along 32N60. Poison Lake quad T32N R7E sec 14 SW of NE 1705 Comment
  SEINET12326117  Leucophysalis nana A. Seneres, Harold, N. 1983-1 101 Lassen Road 21 to Silver Lake, Lassen National Forest 1821 Comment
  CHSC68756  Lewisia nevadensis Vernon H. Oswald; Lowell Ahart 1997-5-27 8523 Lassen Meadow along Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi north-east of Hwy. 139. 1731 Comment
  HSC75895  Lewisia nevadensis D. H. Norris, S. Dowty, Thomas W. Nelson 1971-6-22 19194 Lassen Harvey Valley near Cone Springs Comment
  CHSC36446  Lewisia rediviva Jeffrey R. Peek 1982-6-1 23 Lassen Ca 2 mi e of Horse Lake. Comment
  CAS-BOT-BC283769  Leymus cinereus Margaret Williams; Steven Williams 1974-7-26 74 -L-41 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  JEPS103214  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mile N of Sagehen Summit on W side of Hwy 395 1706 Comment
  JEPS128173  Leymus cinereus M. C. Mahoney, J. A. Nash 2017-8-22 CA 350 -88 Lassen South of Pilgrim Lake of Buckhorn Byway. From Susanville take Highway 395 north to Buckhorn Byway and follow the road east past Buckhorn Reservoir and Dry Lake. Then take a right onto an unnamed road that is right on the CA/NV border. Continue for 1/2 mile. Population is on either side of the road. Comment
  UC70685  Leymus cinereus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UCD64225  Leymus cinereus Beecher Crampton 1954-7-6 2070 Lassen Along US Hwy 395, 2 mi. east of Johnstonville. Comment
  JEPS114874  Lilaea scilloides Lowell Ahart, John Dittes 2008-6-20 14943 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
  SEINET4690760  Lilaea scilloides B. L. Wilson, D. Lytjen 2005-7-28 11484 Lassen Deep creek enar confluence with a smaller stream 1359 Comment
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CAS-BOT-BC130708  Lilium pardalinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49433 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC113073  Limosella acaulis Lowell Ahart; John Dittes 2013-7-23 18889 A Lassen Around a man made pond, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS22194  Limosella acaulis Rimo Bacigalupi with S. Galen Smith 1957-7-28 5997 Lassen along U.S. Highway 395 on Madeline Plains 3.1 mi s Madeline; Madeline Plains 1615 Comment
  CAS-BOT-BC246147  Limosella aquatica R. F. Thorne; C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1609099  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1993-6-28 5602 Lassen Rd 35N04 at Aspen Well n of Hwy 44 on the nw edge Harvey Valley (ne of Poison Lake); ne of Poison Lake 1725 Comment
  JEPS96128  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1996-6-24 7879 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, edge of Papoose Creek where it leaves the N end of the meadow 1633 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
  CHSC29952  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds on the w side of Eagle Lake. 1584 Comment
  OBI75885  Linanthus pungens subsp. pulchriflorus Anthony Baniaga 2011-7-1 415 Lassen BLM. Fort Sage MTs OHV trailhead area, E of Doyle. Quad 1442 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
  UC106752  Linanthus septentrionalis T. S. Brandegee 1892-6-30 Lassen Jonesville Comment
  RSA170303  Linaria dalmatica T. C. Fuller 1963-7-15 10893 Lassen Along drainage way of n. facing slope, road to Pittville, 4.3 miles n.w. of Little Valley. Comment
  CHSC106064  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC99539  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2008-6-20 14917 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
  JEPS19372  Lithophragma glabrum L. R. Short 1936-4-28 S- 336 Lassen Burgess Spr. Exp. Range; Lassen <National> Forest, Burgess Spr. Exp. Range 1767 Comment
  CHSC68766  Lithophragma tenellum Vernon H. Oswald 1997-5-27 8503 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  CHSC71099  Lithophragma tenellum Vernon H. Oswald; Lowell Ahart 1998-5-22 9127 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS21376  Lithospermum ruderale Brown and Wieslander 1922-6-13 64 Lassen Martin Springs Eagle Lake (Eagle Lake) Comment
  SEINET8588539  Lomatium austiniae 2015-5-20 NV 030 -1059 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, go over median, right on Country lane, follow to end of road. 1520 Comment
  CHSC92830  Lomatium dissectum var. multifidum Lowell Ahart; John Dittes 2005-6-2 11930 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
  RSA452590  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCR183199  Lomatium macrocarpum Jim Andre, G. L. Clifton 1993-6-2 7717 Lassen Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns 1243 Comment
  RSA724325  Lomatium macrocarpum Richard Halse 1977-5-22 1549 Lassen Along Highway 395, 9.5 miles north of Madeline 1490 Comment
  UC1567383  Lomatium nevadense var. nevadense G. Schoolcraft 1989-5-3 1864 Lassen near Karlo (n.w. corner Secret Valley); Secret Valley 1356 Comment
  SEINET10545918  Lomatium nevadense var. nevadense David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17796 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy 395. 1402 Comment
  CHSC27618  Lomatium nevadense var. parishii Robert A. Schlising 1978-6-8 3287 Lassen E of Eagle Lake and north of Murrers Upper Meadow. 1536 Comment
  CHSC29850  Lomatium nudicaule Robin Ondricek 1978-6-7 42 Lassen Lower Dry Lake along outer edges of shoreline. 1645 Comment
  POM78132  Lomatium nudicaule Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1137735  Lomatium nudicaule L. R. Short and Wm. Gansberg 1936-6-8 S- 399 Lassen Lassen Forest, Burgess Spring Exp. Range 1755 Comment
  CAS-BOT-BC217799  Lomatium ravenii David D. Keck; J. Clausen 1935-6-24 3738 Lassen 2 mi. S. of Ravendale 1465 Comment
  UC1177543 Image available Lomatium ravenii Peter H. Raven with Otto T. Solbrig 1958-6-17 13287 Lassen 1.8 mi. s. Ravendale (along U.S. Hwy. 395) Comment
  UCR267419  Lomatium ravenii Jim Andre, Glenn L. Clifton 1993-6-14 30002 Lassen northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville 1646 Comment
  OBI81733  Lomatium ravenii Tracey Call, Viola Call 1961-5-30 2048 Lassen about 2 miles south of Ravendale Comment
  CHSC42630  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2059 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  SEINET11131322  Lomatium triternatum var. triternatum M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 86201 Lassen Smoke Creek Rd., E of HWY 395 1433 Comment
  OBI48162  Lomatium vaginatum Rhonda Riggins 1989-4-27 1633 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  OBI81601  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2052 Lassen Lassen-Modoc Co. line near highway U.S. 395. 1676 Comment
  CHSC60829  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5608 Lassen N of Hwy 44 of Harvey Rd. One (34N27) 1.5 mi NE of Aspen Well, N of Harvey Valley, NE of Poison Lake. 1761 Comment
  POM28315  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS114702  Lotus denticulatus Lowell Ahart, John Dittes 2008-6-20 14970 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC773895  Lotus purshianus var. purshianus L. R. Short and J. Warren 1936-6-23 S- 447 Lassen Burgess Spring Experiment Range Lassen Forest Comment
  HSC23526  Lotus salsuginosus R. Carter 1967-6-27 554 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  SEINET3559881 Image available Lotus tenuis Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8474 Lassen Near Honey Lake, 1 mi SE of Milford, 26 mi SE of Susanville 1311 Comment
  CHSC113075  Ludwigia palustris Lowell Ahart; John Dittes 2013-7-23 18904 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
  SEINET7123961 Image available Lupinus andersonii E. A. Bourdo Jr. 1972-1 s.n. Lassen Lassen National Park Comment
  UC126936  Lupinus angustiflorus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Leke Silver Lake Comment
  CAS-BOT-BC208731  Lupinus argenteus var. heteranthus M. S. Taylor 1982-6-12 4653 Lassen Doyle, ca. 0.5 mi E of Hwy 395 Comment
  CAS-BOT-BC208733  Lupinus argenteus var. heteranthus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 mi. from junction of Hwy. 36 and 395. 1249 Comment
  CAS-BOT-BC208735  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 215 Lassen Sheepshead, Lassen Forest 1500 Comment
  CAS-BOT-BC208749  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-15 8310 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC208752  Lupinus argenteus var. heteranthus Gary Schoolcraft 1983-7-20 1098 Lassen S. slopes of Fredonyer Peak 2194 Comment
  CAS-BOT-BC208758  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of doyle, along Hwy 395 Comment
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline Comment
  CHSC60740  Lupinus argenteus var. heteranthus Vernon H. Oswald; Lowell Ahart 1993-6-14 5514 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  CHSC71084  Lupinus argenteus var. heteranthus Vernon H. Oswald; Lowell Ahart 1998-5-22 9094 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 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
  NY736923  Lupinus argenteus var. heteranthus P. A. Munz 1947-5-20 11888 Lassen Milford 1265 Comment
  UC1129768  Lupinus argenteus var. heteranthus A. Simontacchi 1940-6-28 721 Lassen 5.7 mi s Eldridge; Lassen National Forest, Halls Flat Quad. Comment
  POM23858  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  HSC14808  Lupinus caudatus M. T. Milligan 1964-8-6 207 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  POM26869  Lupinus caudatus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA60369  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 miles south of Doyle. 1372 Comment
  RSA91348  Lupinus caudatus F. W. Peirson 1926-6-24 6852 Lassen Madeline Plain. 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
  SEINET10490613  Lupinus caudatus subsp. caudatus Jeffrey Huber 1971-6-2 Huber 140 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
  SEINET10490707  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11919 Lassen Collected on rolling gravelly slopes, in spots of deeper soil and also in Runoff areas from the hwy. Comment
  SEINET10936574  Lupinus caudatus subsp. caudatus Katherine L. Morris 1973-5-25 Morris 213 Lassen Collected in an area of artemisia tridentata, 4 mi se of susanville, on us 36. Comment
  SEINET10450525  Lupinus confertus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in a field near Susanville. 1298 Comment
  RSA747545  Lupinus croceus K. M. Meyer, A. Townesmith 2007-7-23 154 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
  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
  JEPS126477  Lupinus holosericeus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-28 CA 350 -068 Lassen Take 395 to Ravendale. Follow county road 527 to Buckhorn Byway. Follow for approximately 15 miles then turn right at the south end of Pilgrim Lake. Drive past two gates and through Painter's Creek. About 500 meters out of the creek on Painter's Flat. Comment
  RSA325238  Lupinus lepidus var. aridus A. Tiehm 1984-6-25 8823 Lassen Rodeo Flat, 2.7 miles west of the state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  NY747197  Lupinus lepidus var. confertus R. F. Hoover 1940-10-1 4653 Lassen Janesville Comment
  CHSC117063  Lupinus lepidus var. confertus Mary De Decker 1955-8-25 262 Lassen Honey Lake: Highway 395 Comment
  JEPS88206  Lupinus lepidus var. sellulus Vernon H. Oswald and Lowell Ahart 1996-6-24 7867 Lassen Papoose Meadows located 0.5 mi e of Eagle Lake Rd (A!), and 2.5 mi s of Eagle Lake, 0.2 mi s of the cabins Papoose Meadows; Modoc Plateau, Papoose Meadows 1633 Comment
  NY747375  Lupinus leucophyllus var. leucophyllus H. D. D. Ripley 1943-6-13 5679 Lassen Milford 1265 Comment
  UC726776  Lupinus microcarpus var. densiflorus A. A. Heller 1938-6-23 15219 Lassen between Termo and Madeline (along U.S. Hwy 395) 1524 Comment
  CHSC117186  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes 2016-6-7 21018 Lassen On the west edge 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
  CHSC71085  Lupinus nevadensis Vernon H. Oswald; Lowell Ahart 1998-5-22 9113 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  NY747487  Lupinus nevadensis B. J. Cox 1971-6-2 2595 Lassen Hallelujah Jct. intersection of U.S. 395 and Calif. Hwy 70 1433 Comment
  HSC76493  Lupinus polycarpus B. J. Cox, Paul Gallian 1971-6-2 2576 Lassen 6 mi. S of Adin, along Hwy. 139 right-of-way 1372 Comment
  SEINET10486219  Lupinus saxosus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2575 Lassen 6 mi s of adin; along state hwy. 139 Right-of-way. In basalt-clay, grassy road Bank. Artemisia-juniper association. 1372 Comment
  RSA32777  Lupinus subvexus var. subvexus A. A. Heller 1938-6-23 15219 Lassen Along U. S. H ighway 395 between Termo and Madeline. 1524 Comment
  RSA69483  Luzula comosa F. W. Peirson 1926-6-22 6826 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  CHSC60463  Luzula comosa var. laxa Mary Ann Showers 1992-6-13 2536 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  RSA252467  Machaeranthera canescens var. canescens R. F. Thorne, C. W. Tilforth 1969-9-6 39268 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  RSA518407  Machaeranthera canescens var. canescens George K. Helmkamp 1990-10-4 M- 5 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  UCSB48516  Madia Clare B. Hardham 1961-6-16 7451 Lassen collected at Gold Run Creek S of Susanville Comment
  POM253193  Madia bolanderi A. A. Heller 1937-9-1 15342 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  CAS-BOT-BC342645  Madia citrigracilis John Thomas Howell 1934-7-8 12494 Lassen Spalding's, Eagle Lake 1584 Comment
  CAS-BOT-BC343697  Madia elegans John Thomas Howell 1974-7-10 50556 Lassen Elysian Valley 1325 Comment
  SD132249  Madia elegans G. Helmkamp 1990-9-23 A 6 Lassen 3.0 miles east of Susanville, along State Road 36. 1340 Comment
  CAS-BOT-BC344298  Madia exigua John Thomas Howell 1973-7-10 49782 Lassen Fredonyer Pass 1737 Comment
  UC33229  Madia exigua M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  JEPS94816  Madia glomerata Vernon H. Oswald and Lowell Ahart 1998-9-8 9576 Lassen Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber 1255 Comment
  CAS-BOT-BC343060  Madia gracilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50653 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  SEINET481268  Madia gracilis N. H. Holmgren, P. K. Holmgren 9497 1980-7-4 Lassen Observation Peak, sousth obase in upper Smoke Creek drainage, 19 km (12 miles) airline distance east-southeast of Ravendale Comment
  CAS-BOT-BC347438  Malacothrix floccifera Clare B. Hardham 1969-8-28 17422 Lassen Slope west of Janesville Comment
  CAS-BOT-BC347440  Malacothrix floccifera Louella Bass 1983-6-2 s.n. Lassen On Sears Road near Janesville Comment
  SEINET11601669 Image available 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
  SEINET11601737 Image available Malacothrix sonchoides G. Schoolcraft 1980-5-16 236 Lassen Behind kiln overn along Wendel Highway 1280 Comment
  HSC63963  Malacothrix sonchoides Teresa Prendusi 1980-5-30 Lassen Mapes Spring on hillside 1555 Comment
  CHSC113089  Malva neglecta Lowell Ahart; John Dittes 2013-7-22 18877 Lassen East of a drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC4978  Malva neglecta R. Clicquennoi 1967-6-23 11 Lassen In a large vernal pool area 1/4 mi n of Eagle Lake Biology Station, e central side of Eagle Lake. 1554 Comment
  JEPS124804 Image available Malva neglecta Peter Schultz 1967-7-2 172 Lassen 1 mile south of Milford city limit. Highway 395. Comment
  UC18838  Malvella leprosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3330 Lassen near the hot springs Honey Lake Valley 1219 Comment
  RSA312311  Malvella leprosa Verne Grant, Irving Schneider 1947-9-6 8386 Lassen Hot springs about one mile west of Wendel. Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  CHSC7653  Matricaria discoidea Jesse Langdon 1969-6-3 26 Lassen Susanville, Soil Conservation Office. 1310 Comment
  JEPS107816  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
  CAS-BOT-BC271118  Melica bulbosa G. Schoolcraft 1995-5-17 2490 Lassen Three Springs on S slope of Five Springs Mtn. 1524 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
  UCD87270  Melica fugax Beecher Crampton 1960-6-18 5707 Lassen Lassen County (N.E.): southern Warner Mountain, Long Valley, 6 miles southeast of Jess Valleys. 2133 Comment
  UCD88630  Melica subulata John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49438 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CHSC105237  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 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
  CHSC60751  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-14 5536 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
  CHSC64791  Mentzelia albicaulis Vernon H. Oswald 1995-5-31 6813 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.0 mi e of Hwy. 395, between Litchfield and Ravendale. 1341 Comment
  HSC42457  Mentzelia albicaulis Barbara Kelly 1977-8-9 569 Lassen On Rd. from Adin to Madeline, 10.1 mi. E of Madline. Comment
  JEPS124817 Image available Mentzelia albicaulis N. L. Rechen 1964-7-1 73 Lassen 1 mile north of Susanville. H. 139 Comment
  NY22895  Mentzelia albicaulis LeDoux 1973-5-25 869 Lassen Collected 3 miles north of Milford, on Highway 395 at Honey Lake campgrounds Comment
  CHSC23509  Mentzelia congesta Wayne O. Baum 1971-7-19 71 -72 Lassen S. slope of Gallatin Peak. 2042 Comment
  JEPS107445  Mentzelia congesta Lowell Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  CHSC13851  Mentzelia dispersa J. Grove 1973-7-30 Lassen At Sugar Pine Basin. 1524 Comment
  CHSC4782  Mentzelia dispersa R. Carter 1967-6-27 566 Lassen 1.75 mi W of Eagle Lake Biology Station. Growing in dry rocky soil ca. 10 yds. off S side of Rd. 1584 Comment
  CHSC68893  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1997-6-24 8603 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  RSA715543  Mentzelia dispersa L. Ahart 2005-6-1 s.n. Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1121687  Mentzelia dispersa A. Simontacchi 1940-6-5 818 Lassen 8 m wnw Harvey Valley Ranger Station; Halls Flat Quad, Lassen National Forest Comment
  UC1121689  Mentzelia dispersa A. Simontacchi 1940-6-5 817 Lassen 8 mi wnw Harvey Valley; Halls Flat Quad. 1752 Comment
  UC1609316  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1993-6-14 5511 Lassen ca 4 m (air) w Eagle Lake (1.0 m n of its jct. with Lassen A21, on the w edge of Brockman Flat Lava Beds.); Lassen A1 (Eagle Lake Rd.); SE 1/4 SW 1/4 1810 Comment
  UC1121656  Mentzelia montana Robert W. Gardner 1937-6-18 G 22 Lassen Halls Flat Quadrangle, Burgess Spring Experimental Range Comment
  CHSC7717  Mertensia longiflora Beverley J. Wise 1969-5-3 3 Lassen 12 mi. N.E. of Susanville on Lass. Co. Rd. 216 off Las. Co. Rd. 215. On bank of Willow Creek. 1554 Comment
  NY1084278  Mertensia oblongifolia M. J. Williams 1986-5-14 86- 39 --1 Lassen 1.5 rd mi W of turn to Dodge Reservoir, on rd from Tuledad Canyon to Ravendale. 1706.9 Comment
  SD8380  Micranthes bryophora Mrs. R. M. Austin 1882-8-7 Lassen Kings Valley Comment
  CAS-BOT-BC429081  Micranthes odontoloma Alice Eastwood 1912-8-22 1861 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC77197  Microseris laciniata subsp. laciniata G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area S. of TulePatch Spring. Meadow. 1463 Comment
  JEPS88326  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1996-6-24 7843 Lassen Papoose Meados located ca.0/5 mi E of Eagle Lake Road (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau. 1633 Comment
  SEINET11601923 Image available 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
  RSA14498  Microseris laciniata subsp. laciniata Elmer I. Applegate 1929-6-24 5879 Lassen Big Valley, near Bieber Comment
  CAS-BOT-BC349301  Microseris nutans James Jokerst 1983-7-25 1887 Lassen Near Madeline Plains 1614 Comment
  CAS-BOT-BC349303  Microseris nutans Louella Bass 1973-5-29 74 Lassen Elysian Valley 1325 Comment
  JEPS126531  Microseris nutans Lowell Ahart, John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC1136771  Microseris nutans L. R. Short 1936-6-1 S- 353 Lassen Lassen Forest 1859 Comment
  CAS-BOT-BC349298  Microseris nutans Clarence R. Quick 1961-6-21 61 -19 Lassen Adjacent to Road 21, Blacks Mt. Experimental Forest, northeast of Lassen Peak 1798 Comment
  RSA122926  Microsteris gracilis subsp. gracilis K. e. Bradshaw 1939-5-27 230 Lassen Black Mountain Experimental Forest, Plot 39-1. Lassen National Forest 1753 Comment
  JEPS107307  Mimulus arvensis Lowell Ahart, John Dittes 2005-6-1 11900 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
  CHSC60415  Mimulus breweri Mary Ann Showers 1992-6-13 2551 Lassen Shorline at western end of Widow Lake. Lassen Volcanic National Park. 2072 Comment
  UC1037226  Mimulus breweri Leo Whitney 1933-8-14 1596 a Lassen ca. 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  JEPS4710  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi s Westwood 1524 Comment
  JEPS126529  Mimulus guttatus Lowell Ahart, John Dittes 2016-6-7 21009 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  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
  UC1136833  Mimulus microphyllus L. R. Short and J. Warren 1936-6-10 S- 417 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1856 Comment
  UC726697  Mimulus microphyllus A. A. Heller 1938-6-22 15183 Lassen 1 mi e Westwood 1524 Comment
  JEPS10777  Mimulus moniliformis Brown and Wieslander 1922-7-30 17 Lassen Martin Springs Comment
Read comments
Jun 4 2007
  UC445158  Mimulus moniliformis Franklin P. Nutting July 12 Lassen Pine Creek Comment
  HSC22945  Mimulus nanus var. mephiticus John Pratt 1970-6-27 48 Lassen 0.5 mi. E of Turtle Head 1220 Comment
  POM43828  Mimulus nanus var. nanus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  RSA422232  Mimulus nanus var. nanus Christopher Davidson 1975-6-7 2764 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1553406  Mimulus nanus var. nanus Gary Schoolcraft 1988-6-20 1813 Lassen 16 mi w Madeline; Ash Valley 1584 Comment
  RSA536396  Mimulus pygmaeus Beth Corbin 1991-6-26 633 Lassen Big Merrill Flat. 14 miles NW of Susanville. 1790 Comment
  CAS-BOT-BC9536  Mimulus rubellus Clarence Roy Quick 1962-6-17 62 -21 Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  JEPS94112  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1998-5-22 9123 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  POM43553  Mimulus suksdorfii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  HSC20810  Mimulus torreyi M. T. Milligan 1964-7-16 138 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  NY813498  Mirabilis laevis var. retrorsa M. Bourell 1997-5-31 5881 Lassen Wendel Road 10.9 miles southeast of Highway 395. Comment
  CAS-BOT-BC221782  Monardella odoratissima John Thomas Howell 1934-7-9 12525 Lassen Pine Creek Flat Comment
  CAS-BOT-BC221972  Monardella odoratissima subsp. glauca John Thomas Howell 1934-6-10 11888 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  RSA122018  Monardella odoratissima subsp. glauca L. R. Short, Wm Gansberg 1936-7-3 S- 467 Lassen MDM, Burgess Spr. Exp. Range. 1849 Comment
  UC1137692  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-21 F 274 Lassen Stringer Lassen National Forest 1696 Comment
  UC124968  Monardella odoratissima subsp. pallida T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC222147  Monardella odoratissima subsp. pallida W. Lessig 1967-7-20 28 Lassen 2 mi s of Five Corners on w side of rd to Dean's Meadow 1828 Comment
  CHSC99537  Monolepis nuttalliana Lowell Ahart; John Dittes 2008-6-20 14973 Lassen 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
  SDSU5609  Monolepis nuttalliana D. F. Howe 1964-7-31 3903 Lassen Modoc National Forest 10.2 miles from entrance on road from Likely. 1768 Comment
  CAS-BOT-BC444693  Montia chamissoi Lassen 1927 G. S. Crew 1927-6-25 25 Lassen Lassen National Forest. Norval Flat 2051 Comment
  CAS-BOT-BC444695  Montia chamissoi Louella Bass 1973-6-17 123 Lassen Elysian Valley. 1325 Comment
  CHSC60764  Montia chamissoi Vernon H. Oswald; Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02), 5.3 mi E of Lassen 105 (32N28Y), near Summit Camp, ca. 7 mi (air) W of Eagle Lake. Common in shallow water and on wet soil along a streamlet draining into a pond located in a small meadow surrounded by open pine woodland with an understory of sagebrush. 1889 Comment
  UC963894  Montia chamissoi Milo S. Baker 1952-5-23 12421 a Lassen 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
  CHSC77226  Montia fontana G. Schoolcraft 1995-5-16 2478 Lassen 2 mi. east of Bull Flat. Growing in spring. 1615 Comment
  CHSC54192  Montia linearis Vernon H. Oswald 1991-5-28 4619 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. Locally abundant on the bed of a drying vernal pool on an undulating sagebrush flat east of the barn. 1264 Comment
  JEPS107818  Montia linearis Lowell Ahart, John Dittes 2005-6-2 11956 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
  JEPS114646  Montia linearis Lowell Ahart, John Dittes 2008-6-20 14938 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA122965  Montia linearis L. R. Short, Wm Gansberg 1936-6-8 s 392 Lassen Burgess Spring Exp. Range 1744 Comment
  CAS-BOT-BC445067  Montia linearis Clarence R. Quick 1962-6-17 62 -20 Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  UC1776691  Muhlenbergia asperifolia G. Schoolcraft 1999-7-7 2854 Lassen about 9 miles NE of Ravendale - dune N of Horne Ranch Road 1621 Comment
  UCD86573  Muhlenbergia asperifolia Leo Whitney 1934-7-4 2212 Lassen Lassen National Forest. Eagle Lake. 1584 Comment
  RSA129384  Muhlenbergia filiformis H. S. Yates 1936-8-12 6018 Lassen Susanville. 1524 Comment
  RSA256324  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-7-1 6240 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  CAS-BOT-BC275159  Muhlenbergia richardsonis Parkison 1916-6-10 19 Lassen Harvey Valley 1676 Comment
  SJSU4296  Muhlenbergia richardsonis J. W. Tilden 1960-6-27 1511 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  UC1024739  Muhlenbergia richardsonis Leo Whitney 1933-8-3 3042 Lassen ca 8 mi nw Eagle Lake (on open flats); Lassen National Forest, Slate Creek 1920 Comment
  UC507007  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F- 196 Lassen Dry Lake Lassen <National> Forest, Grass Valley 1694 Comment
  UCR197924  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen Modoc Plateau, 17 miles south of Ravendale along US highway 395. 1524 Comment
  CHSC57215  Muilla transmontana Mary Meyer 1980-5-20 523 Lassen On mesa 1 mi due east of BLM campground and spring, north of Snowstorm Mountain. 1645 Comment
  CAS-BOT-BC515650  Muilla transmontana H. D. Ripley; R. C. Barneby 1944-5-29 5953 Lassen South of Jamesville 1280 Comment
  CAS-BOT-BC392253  Myosurus apetalus G. Schoolcraft 1993-6-10 2290 Lassen N. of Clark's Valley Rd. e. of Red Rock Lake 1828 Comment
  CHSC107334  Myosurus minimus Lowell Ahart; John Dittes 2011-6-21 17526 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC118856  Myosurus minimus L. P. Janeway; B. Castro 2015-6-5 11769 Lassen Great Basin, Modoc Plateau. Along County Road 512 16.9 road-km south from Surprise Valley Road towards Tuledad Canyon; ina small northwestern drainage into Post Canyon; 2.3 air-km east-southeast of Little Hat Mountain. 1837 Comment
  CHSC64893  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6895 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  JEPS118467  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley 1268 Comment
  JEPS94606  Myosurus minimus Vernon H. Oswald and Lowell Ahart 1997-5-27 8518 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  CHSC5257  Myriophyllum sibiricum A. Santos 1946-7-12 Lassen Eagle Lake. Pine Creek Slough. 1584 Comment
  CHSC77218  Myriophyllum sibiricum G. Schoolcraft 1996-7-10 2532 Lassen Willow Creek- northeast of Susanville. 1432 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
  JEPS124839 Image available Myriophyllum sibiricum John Degenfelder 1969-7-8 85 Lassen on highway 139 about 16 miles north of Susanville. Comment
  HSC22985  Nama aretioides John Pratt 1970-7-5 67 Lassen 1250 Comment
  UCD55269  Nama aretioides var. multiflora Ellen Dean 2006-5-15 3070 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1247 Comment
  CAS-BOT-BC60340  Nasturtium officinale D. L. Stites 1967-6-24 29 Lassen Collected ca. 3.5 miles southeast ELBS Upper Murrer Meadow. 1524 Comment
  RSA0011554  Navarretia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46988 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  SBBG58267  Navarretia breweri E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 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
  JEPS106521  Navarretia intertexta subsp. propinqua L. P. Janeway 2004-6-26 8144 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
  JEPS17720  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with G. T. Robbins 1955-7-19 5373 Lassen 10.3 mi se Adin (along Ash Valley road between Adin and Madeline) 1524 Comment
  UCD32653  Navarretia intertexta subsp. propinqua Beecher Crampton 1954-7-5 2047 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UC449788  Navarretia leptalea subsp. leptalea Franklin P. Nutting 1894-7-12 Lassen Pine Creek Pine Creek (Northern California) Comment
  CHSC67574  Navarretia leucocephala subsp. leucocephala James Jokerst 1983-7-24 1878 Lassen Near madeline Plains. Vernal pool. 1614 Comment
  CHSC34342  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5853 Lassen Ca. 0.2 mi n of Hwy. 44, on Pittville Rd. Comment
  HSC82246  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1980-7-6 5986 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 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
  UC1058208  Navarretia leucocephala subsp. minima C. McMillan 1949-6-15 1542 Lassen 5 mi w Bieber Comment
  UC1112252  Navarretia leucocephala subsp. minima R. C. Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (Highway 395); Madeline Plains 1615 Comment
  UC909067  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 c Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
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Oct 17 2009
  CAS-BOT-BC230383  Navarretia leucocephala subsp. minima Beecher Crampton 1960-6-20 5731 Lassen 0.5 mile S of Black's Mountain Experiment Station, USDA Forest Service, Lassen National Forest 1706 Comment
  UC1137723  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  UC1143039  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  JEPS27169  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 1673 Lassen about 4 mi sw Gold Run Creek junction with Richmond Road (Gold Run Creek, s of Susanville); Gold Run Creek Comment
  JEPS2980  Nemophila parviflora var. austiniae L. Constance 1938-6-10 2324 Lassen 0.5 mi w Fredonyer Pass (junction of Crazy Harry and Westwood--Susanville Roads); w of Fredonyer Pass 1676 Comment
  RSA0043177  Nemophila pedunculata L. Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  UC1609375  Nemophila pedunculata Vernon Oswald and Lowell Ahart 1993-5-12 5389 Lassen 1.6 mi se Pittsville Rd. (Hwy 44 between Poison Lake and A21 (to Westwood)); betw Poison Lake and A21 1719 Comment
  UCSC000580  Nemophila pedunculata L. R. Short, W. Gansberg 1936-6-8 393 Lassen Burgess Spring Experiment Range 1743 Comment
  PASA2124  Nemophila spatulata Margaret Stason 1932-6-21 439 Lassen Devil's Kitchen, Lassen National Park Comment
  UC604533  Neoholmgrenia andina C. W. Sharsmith 1938-7-18 3636 Lassen three mi s Termo 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
  CHSC13736  Nicotiana attenuata S. Villard 1973-7-16 50 Lassen 2 miles north of Eagle Lake Marina on dirt road going to Eagle Lake Field Station. Roadside. 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
  SJSU11381  Nicotiana attenuata M. R. Kempf 1965-7-12 294 Lassen Eagle Lake 1584 Comment
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 Comment
  UC1584022  Oenothera deltoides subsp. cognata G. Schoolcraft 1990-6-12 2086 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  JEPS94105  Oenothera deltoides subsp. piperi Vernon H. Oswald and Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  HSC103620  Oreostemma alpigenum var. andersonii Thomas W. Nelson, Jane Nelson 1985-8-10 8015 Lassen Along north side of Silver Lake 1829 Comment
  UCD134723  Oreostemma alpigenum var. andersonii Ratliff 1966-7-15 9 Lassen Lassen Forest. Lower Pine Creek - PLDT 49. 1676 Comment
  HSC97139  Oreostemma elatum Martin J. Lenz 2005-7-20 2042 Lassen N slope od Dryer Mtn.; approx. 1.4 air mi. N of summit: Roseburg Resources Co. 1822 Comment
  JEPS26569  Orobanche corymbosa subsp. corymbosa Lauramay T. Dempster 1961-6-17 1676 Lassen About 8 miles north of Karlo Road junction with Highway 395. Comment
  CAS-BOT-BC499906  Orobanche fasciculata Clare B. Hardham no date on label; det'd 1980. s.n. Lassen Sierra Nevada: Gold Rush Creek, S of Susanville Comment
  SEINET3836941 Image available Orthocarpus cuspidatus subsp. copelandii Marcus E. Jones 1897-6-28 Lassen Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CHSC27677  Orthocarpus cuspidatus subsp. cryptanthus Jerry Sndgrass 1978-6-28 5 Lassen Lower Dry L., E of Eagle L. 1645 Comment
  CHSC60858  Orthocarpus cuspidatus subsp. cryptanthus Vernon H. Oswald; Lowell Ahart 1993-6-28 5604 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  POM82978  Osmorhiza berteroi Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  HSC69075  Osmorhiza occidentalis Gary Schoolcraft 1980-7-29 342 Lassen Widow Peak Area 1585 Comment
  CHSC13864  Oxypolis occidentalis Mary Meyer 1973-7-7 20 Lassen Located at NE end of Murrer's Upper Meadow. 1572 Comment
  UC30052  Oxytheca perfoliata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley 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
  CHSC5217  Packera multilobata A. Santos 1946-6-17 Lassen Eagle Lake. Mr. Fredonyer Rd. 2072 Comment
  CAS-BOT-BC10388  Paeonia brownii Margaret Williams; Steven Williams 1974-7-26 74- 2 -14 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  UC69607  Paeonia brownii J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CAS-BOT-BC253786  Panicum hillmanii John Thomas Howell 1973-7-10 49808 Lassen Doyle Comment
  CAS-BOT-BC259611  Pascopyrum smithii R. E. Frenkel 1964-7-12 663 Lassen On California Highway 299, 1.5 miles W of Bieber 1249 Comment
  CAS-BOT-BC259613  Pascopyrum smithii James Jokerst 1983-7-25 1886 Lassen Near Madeline Plains 1614 Comment
  CHSC77265  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE. of Shaffer Mtn. 1356 Comment
  CHSC65122  Pectiantia pentandra Vernon H. Oswald; Lowell Ahart 1995-7-24 7142 Lassen Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. 1905 Comment
  CHSC71076  Pectocarya penicillata Vernon H. Oswald; Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  JEPS107455  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
  CHSC64871  Pectocarya setosa Vernon H. Oswald; Lowell Ahart 1995-6-19 6892 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. On a slope on the n side of the road. 1383 Comment
  OBI75871  Pedicularis groenlandica Anthony Baniaga 2011-8-9 494 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  POM195123  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 953 Lassen 4 miles west of Susanville, nearly to the divide; but not seen on western watershed. 1463 Comment
  CHSC4272  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-24 2426 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC60779  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1993-6-14 5513 Lassen Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. 1810 Comment
  CHSC77237  Penstemon deustus var. pedicellatus G. Schoolcraft 1998-7-8 2749 Lassen E. of Camel Rock near Secret Valley area. 1463 Comment
  CHSC14190  Penstemon gracilentus M. S. Taylor 1974-7-10 276 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
  CHSC29258  Penstemon gracilentus J. D. Prouty 1978-6-28 11 Lassen E of Eagle L., at W shore of Lower Dy L. Comment
  CHSC62007  Penstemon gracilentus Eenam Sin 1992-6-3 26 Lassen North east corner at the base of Gallatin Peak. 1524 Comment
  JEPS27801  Penstemon gracilentus Frances D. Payne 1929-7-12 81 Lassen Lost Lake e drainage..Warner Range, Skunkcabbage and Silver Creeks... (watersheds of Skunkcabbage and Silver Creeks, eastern drainage of the s end of the Warner Range) 2286 Comment
  NY600695  Penstemon gracilentus G. H. True Jr. 1938-7-14 959 Lassen Summit on Milford Grade, just on north slope 1676.4 Comment
  POM44652  Penstemon gracilentus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  RSA408033  Penstemon gracilentus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC506922  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen Forest 1783 Comment
  HSC22978  Penstemon gracilentus John Pratt 1970-6-21 31 Lassen 1738 Comment
  UC1537429  Penstemon laetus Gordon H. True Jr. 1936-6-25 530 Lassen e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station 1767 Comment
  RSA0065446  Penstemon laetus M. P. Harthill 1971-6-20 207 Lassen Ravendale. Comment
  UC423645  Penstemon neotericus David D. Keck 1930-7-23 957 Lassen two mi e Westwood; Sierra Nevada, e of Westwood 1493 Comment
  SEINET10547622  Penstemon oreocharis Mary Susan Taylor 1974-1 Taylor 287 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  NY650102  Penstemon roezlii J. T. Howell 1973-8-1 50205 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164.1 Comment
  SBBG28920  Penstemon roezlii D. D. Keck 1954-7-23 954 Lassen 12 mi W of Susanville 1676 Comment
  UC423646  Penstemon roezlii David D. Keck 1930-7-23 954 Lassen 12 mi w Susanville; Sierra Nevada 1675 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
  SEINET229582  Penstemon roezlii G. Schoolcraft 1982-6-16 701 Lassen N of Shimn Ranch 1548 Comment
  JEPS128128  Penstemon rydbergii Catherine Bauer with Ellen Bauer Benson 2017-8-18 25 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC239493  Penstemon rydbergii var. oreocharis A. M. Vollmer; L. Beane 1953-7-1 78 Lassen Along Halls Flat road beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC239495  Penstemon rydbergii var. oreocharis Leland S. Smith 1927-7-1 49 Lassen Lassen National Forest, at Bogard Ranger Station Comment
  CAS-BOT-BC239506  Penstemon rydbergii var. oreocharis L. B. Barlow 1967-7-4 89 Lassen 5 mi. south of Eagle Lake Biological Sation on Gallatin Beach Road 1737 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
  CHSC12412  Penstemon rydbergii var. oreocharis Lynn R. Thomas 1969-6-20 136 Lassen Dean's Meadow, ca. 6 mi. s of E.L.B.S. 1950 Comment
  CHSC5915  Penstemon rydbergii var. oreocharis R. Gein 1946-6-24 Lassen McCoy Flat, west of Eagle Lake. 1645 Comment
  JEPS114709  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2008-6-20 14919 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS124372  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2015-7-13 20316 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  NY651264  Penstemon rydbergii var. oreocharis F. W. Pennell 1940-6-10 25774 Lassen Route 36, road to Coppervale R.S., east of Westwood 1493.5 Comment
  NY651296  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219.2 Comment
  SBBG7130  Penstemon rydbergii var. oreocharis H. and M. Dearing 1938-7-1 2239 c Lassen 12 mi W of Susanville Comment
  CHSC12482  Penstemon speciosus Carol Weld 1969-6-20 14 Lassen Road to Dean's Meadow from Five Corners. 1889 Comment
  HSC35070  Penstemon speciosus D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19189 Lassen Harvey Valley near Cone Springs Comment
  HSC63768  Penstemon speciosus Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N tip of Eagle Lake 1768 Comment
  RSA121810  Penstemon speciosus L. R. Short, J. Warren 1936-6-26 S- 357 Lassen Burges Spr. Exp. Range. 1845 Comment
  RSA401878  Penstemon speciosus Rockwell 1925-07 s.n. Lassen Eagle Lake. Comment
  UC1226034  Penstemon speciosus Arthur Cronquist, Arthur H. Holmgren 1959-6-16 8455 Lassen 26 mi nw Reno; nw of Reno Comment
  UC1520676  Penstemon speciosus Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9518 Lassen 19 km (12 mi) airline distance ese Ravendale (14.8 km (9.2 mi) e U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1680 Comment
  UC423671  Penstemon speciosus David D. Keck 1930-7-23 950 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  CDA33279  Penstemon speciosus T. C. Fuller 1963-6-11 10665 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  RSA38458  Penstemon speciosus Philip A. Munz 1947-5-19 11877 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  UC1012214  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi n of junction with Route #24 (ne of Plumas); ne of Plumas 1524 Comment
  CAS-BOT-BC239664  Penstemon sudans John Thomas Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  JEPS84973  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains, Honey Lake 1828 Comment
  NY661805  Penstemon sudans J. T. Howell 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range Comment
  OBI75899  Penstemon sudans Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 478 Lassen Lassen Natl Forst. Hwy 36, ca. 1/4 mi E of "Fredonyer Pass Winter OHV Parking Lot" Fredonyer Pass quad T29N R10E sec 2 NW of SW 1950 Comment
  UC27436  Penstemon sudans J. Burtt Davy Jun 17 1897-Jun 24 1897 3401 Lassen Willow Creek , Willow Creek (Honey Lake Valley) Comment
  SEINET5323638 Image available Penstemon sudans G. Schoolcraft 1998-7-8 2752 Lassen Along Hwy 139 about 3 mi. n. os Susanville. 1402 Comment
  NY763152  Penstemon venustus K. A. Vincent 1987-6-25 4436 Lassen Sierra Nevada, southeast side of Fredonyer Butte; along north side of CA 36 ca. 11.5 miles WSW of Susanville, east of Fredonyer Pass 1585.0 Comment
  UC2027331  Penstemon venustus Anthony Baniaga and R. Bomberger 2011-7-28 479 Lassen Lassen National Forest. Along Highway 36. Fredonyer Pass quadrangle Comment
  CAS-BOT-BC140468  Peraphyllum ramosissimum James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 miles ssw. of Karlo 1417 Comment
  RSA59742  Peraphyllum ramosissimum E. K. Balls 1950-5-19 14789 Lassen 1.6 miles S of Modoc county line, Hwy. 395, between Madeline and Likely. 1463 Comment
  POM91106  Peraphyllum ramosissimum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles north. 1524 Comment
  CHSC5921  Perideridia bolanderi J. E. Wolf 1946-6-23 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  CHSC42647  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1986-5-28 2049 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC64859  Perideridia bolanderi subsp. bolanderi Vernon H. Oswald; Lowell Ahart 1995-6-19 6900 Lassen Modoc Plateau. Between Litchfield and Rravendale on Smoke Creek Ranch Rd., 7.6 mi e of Hwy. 395. 1444 Comment
  UC1004694  Perideridia bolanderi subsp. bolanderi R. C. Bechtel 1954-7-12 Lassen Bridge Creek Camp Comment
  UC1137731  Perideridia bolanderi subsp. bolanderi L. R. Short and J. Warren 1936-6-23 S- 449 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1761 Comment
  CHSC105250  Perideridia kelloggii Lowell Ahart; John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CAS-BOT-BC222762  Perideridia parishii Clare B. Hardham 1971-8-22 18397 A Lassen Diamond Mountain 2133 Comment
  JEPS12408  Perideridia parishii subsp. latifolia Brown and Wieslander 1922-7-30 15 Lassen Martin Sprs. Eagle Lake Comment
  CAS-BOT-BC7522  Phacelia adenophora Elmer Ivan Applegate 1897-6-3 895 Lassen Madeline Plains Comment
  JEPS79216  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  SD131633  Phacelia adenophora Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11701 Lassen S side of Schaffer Mt, W of Hwy 395 from Susanville to Alturas, 3.4 mi N of Wendel Rd 1387 Comment
  SJSU9143  Phacelia adenophora M. R. Kempf 1965-7-13 296 Lassen by Hwy 139, 14 mi N of Susanville 1524 Comment
  UC726890  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen along Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  POM252966  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  RSA487940  Phacelia adenophora Arnold Tiehm, Jan Nachlinger, Margaret J. Williams 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 miles north of the Wendel road on Hwy 395 from Susanville to Alturas, west of the highway. 1387 Comment
  JEPS29745  Phacelia bicolor var. bicolor Rimo Bacigalupi and L. R. Heckard 1962-5-28 8500 Lassen junction of cut-off road to Standish and Litchfield (Lassen Co. A3) with U.S. highway 395 1219 Comment
  JEPS94828  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
  CHSC64789  Phacelia gymnoclada Vernon H. Oswald 1995-5-24 6783 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. 1219 Comment
  JEPS118499  Phacelia hastata A. Holmen 2011-8-23 CA 320 -94 Lassen South US Hwy 295 to Termo and turn left onto Lassen Co. Rd 508 (Juniper Ridge Rd). Follow this road for 11 miles to Cold Springs Rd and head north for 3.3 miles. Turn left and travel 1.5 miles. Collection site will be to the west heading up draw. Comment
  SJSU11244  Phacelia hastata J. W. Tilden 1960-6-27 1499 Lassen foot of Moonlight Rd, outskirts of Westwood 1524 Comment
  UC1537532  Phacelia hastata Gordon H. True 1936-6-27 566 Lassen Hot Spring Mountain 1676 Comment
  CHSC23550  Phacelia humilis W. O. Baum 1971-6-28 23 Lassen E slope of Gallatin Peak. 1981 Comment
  CHSC26178  Phacelia humilis J. P. Kroessig 1977-5-25 35 Lassen At Eagle Lake Biological Station, ca. 37 km nnw of susanville. 1570 Comment
  NY1057842  Phacelia humilis P. A. Munz 1947-5-20 11885 Lassen Laufman Forestry Public Camp above Milford 1524 Comment
  UC1562814  Phacelia humilis Barbara Ertter with Gary Schoolcraft 1987-6-16 7196 Lassen saddle on e side Hot Springs Peak (ne side of Honey Lake); Skeedaddle Mountains 2194 Comment
  UC24377  Phacelia humilis Mrs. C. C. Bruce June 1898 2191 Lassen Susanville Antelope hills Comment
  RSA128301  Phacelia humilis var. humilis Peter H. Raven, Otto T. Solbrig 1958-6-16 13246 Lassen Four and a half miles east of Westwood on State Highway 36. Comment
  RSA201834  Phacelia humilis var. humilis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake, Warner Mountains, Modoc National Forest, northeastern part of the county (ca. 18 miles airline southeast of Likely). 1905 Comment
  JEPS79142  Phacelia inundata L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  CHSC80208  Phacelia linearis Jeanne Boze 1981-6-13 117 Lassen On northeast slope of Gallatin Peak. 1981 Comment
  HSC82245  Phacelia linearis Thomas W. Nelson, Jane P. Nelson 1980-7-6 5987 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CDA40405  Phacelia linearis T. C. Fuller 1963-6-1 10637 Lassen Road to Willow Springs Campground, 2.0 miles east of Pittville-Susanville Road, 11.3 miles (road) south of Pittville. 0 Comment
  POM73491  Phacelia linearis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA128305  Phacelia lutea Peter H. Raven, Otto T. Solbrig 1958-6-17 13281 Lassen Along US Highway 395, 5.7 miles south of Ravendale. Comment
  RSA647570  Phacelia lutea Marion P. Harthill 1972-6-17 818 Lassen Ravendale. 1768 Comment
  NY1056433  Phacelia lutea var. glandulifera A. Tiehm 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway 1387 Comment
  NY1056442  Phacelia lutea var. glandulifera A. J. Cronquist 1959-6-17 8479 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  NY1056438  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale 1341 Comment
  JEPS55961  Phacelia mutabilis John Thomas Howell 1934-7-10 12555 Lassen Black's Mt. Comment
  CHSC23109  Phacelia ramosissima Robert A. Schlising 1974-6-25 3149 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station; basaltic rocks from Black Mt. lava flow near Bly Tunnel. Comment
  UC107342  Phacelia ramosissima var. eremophila T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  RSA72886  Phacelia tetramera Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  UC1187649  Phacelia thermalis Lincoln Constance, Elwood Molseed, John Weiler 1960-6-13 3678 Lassen 9 mi n Litchfield 1219 Comment
  POM266079  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Floodplain of Pitt River, one mile west of Bieber. Comment
  UC1100411  Phleum pratense Malcolm A. Nobs and S. Galen Smith 1949-7-21 1056 Lassen 4 mi n Madeline Comment
  UC1776695  Phleum pratense G. Schoolcraft 1994-8-2 2407 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  CAS-BOT-BC232853  Phlox A. M. Vollmer; L. Beane 1953-7-1 55 Lassen Along Halls Flat road, beginning 6 miles W of Susanville to McArthur 1554 Comment
  CHSC68898  Phlox diffusa Vernon Oswald; Lowell Ahart 1997-6-24 8638 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
  JEPS94530  Phlox diffusa Vernon Oswald and Lowell Ahart 1997-6-24 8638 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC1137650  Phlox douglasii subsp. rigida A. Simontacchi 1940-5-17 744 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC23598  Phlox gracilis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC1306  Phlox speciosa subsp. occidentalis M. Anthony 1953-4-27 Lassen Susanville. 1280 Comment
  POM74317  Phlox speciosa subsp. occidentalis Marcus E. Jones 1897-6-26 10522 Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC23964  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  UC52648  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  HSC17069  Phlox stansburyi Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  UCD55262  Phlox stansburyi Ellen Dean 2006-5-15 3060 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
  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
  RSA126929  Phragmites australis H. S. Yates 1936-8-11 6063 Lassen Near Red Rock. 1341 Comment
  CHSC117194  Pilularia americana Lowell Ahart; John Dittes 2016-6-7 20973 Lassen About 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1609393  Pilularia americana Vernon H. Oswald and Lowell Ahart 1993-7-8 5648 Lassen near se end Poison Lake (Pittville Rd.(Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi n of Hwy. 44) 1709 Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  RSA518540  Pinus ponderosa George K. Helmkamp 1990-10-4 12 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  CDA601  Pinus washoensis Gordon Leppig, Sylvia Leppig and Juli & Kai Neander 1998-8-18 1065 Lassen Modoc National Forest, Blue Lake Campground Comment
  UCD89655  Piptatherum exiguum Leo Whitney 1935-6-16 3272 Lassen Mt. Lassen, Base of Crater. Comment
  CAS-BOT-BC227995  Plagiobothrys David D. Keck; J. Clausen 1935-6-24 3731 Lassen 10 miles S of Likely (Modoc County) 1464 Comment
  JEPS28648  Plagiobothrys cognatus George W. Gillett 1957-7-22 873 Lassen Snag Lake Lassen Volcanic National Park (near inlet at s end of lake) 1850 Comment
  CHSC58837  Plagiobothrys cusickii Vernon H. Oswald; Lowell Ahart 1992-7-16 5113 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  HSC104018  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 5.5 air mi. NE of Bieber, Ash Creek Wildlife Area, ~100 yds. SE of tall poles 1268 Comment
  JEPS107314  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
  RSA0105587  Plagiobothrys cusickii Lowell Ahart, John Dittes 2013-7-22 18870 Lassen 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
  SJSU8035  Plagiobothrys cusickii J. W. Tilden 1960-6-27 1518 Lassen 5 mi E of Westwood by Moonlight Rd 1524 Comment
  CAS-BOT-BC224968  Plagiobothrys hispidulus J. Burtt Davy 1897-6-17 3360 Lassen Adobe Meadows, Honey Lake Valley Comment
  CAS-BOT-BC224972  Plagiobothrys hispidulus John Thomas Howell 1934-7-7 12479 Lassen Harvey Valley Comment
  CAS-BOT-BC224978  Plagiobothrys hispidulus Philip A. Munz 1947-5-20 11891 Lassen Milford 1264 Comment
  CHSC60726  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1993-6-14 5510 Lassen Junction of Lassen A1 (Eagle Lake Rd.) with Lassen A21 (32N02), ca. 3 mi (air) W of Eagle Lake. Roadside depression. 1813 Comment
  UC1025083  Plagiobothrys hispidulus Leo Whitney 1933-8-14 2002 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest Comment
  CHSC106839  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy 44 ca 1 mi E of Shasta Co. line. Flat lodgepole forest S of hwy. 1645 Comment
  CHSC60881  Plagiobothrys hispidus Vernon H. Oswald; Lowell Ahart 1993-7-8 5655 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along a low, stony ridge between the railroad and the lake. 1709 Comment
  RSA128304  Plagiobothrys mollis P. H. Raven, Otto T. Solbrig 1958-6-17 13258 Lassen Along U.S. Hwy 395, 7.1 miles W of Standish. Comment
  RSA495517  Plagiobothrys mollis Elaine Joyal, D. Mehlman 1988-6-27 1286 Lassen Poison Lake. 2000 Comment
  POM71640  Plagiobothrys scouleri var. hispidulus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC93662  Plagiobothrys tenellus Lowell Ahart; John Dittes 2005-6-2 11994 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
  UC101433  Plagiobothrys tenellus Marcus E. Jones, A. M. 1897-6-18 7141 Lassen Chat 1524 Comment
  SEINET3152918  Plagiobothrys tenellus E. K. Balls 1950-5-9 15950 Lassen 12 miles N of Doyle, hwy 395. 1295 Comment
  CAS-BOT-BC136632  Platanthera A. M. Vollmer; L. Beane 1953-7-1 74 Lassen Field redacted by CAS, contact the data manager for more information 1554 Comment
  HSC16636  Platanthera dilatata var. leucostachys H. E. Parks, S. T. Parks Jun 1928 217 Lassen Lassen National Park, Drakesbad 1768 Comment
  HSC95284  Platanthera dilatata var. leucostachys Gordon Leppig 1998-7-12 941 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC4992  Plectritis macrocera L. E. Ray 1967-6-23 48 Lassen Collected ca. 200 yds, ne of ELBS. 1524 Comment
  UC768477  Pleiacanthus spinosus Robert F. Hoover 1940-9-28 4630 Lassen Susanville Comment
  CAS-BOT-BC254944  Poa bulbosa John Thomas Howell 1975-7-23 51395 Lassen Susanville 1295 Comment
  CHSC99276  Poa bulbosa Lowell Ahart; John Dittes 2008-6-22 15035 Lassen About 220 yards west of the road levee, on the banks 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
  UC1100399  Poa bulbosa Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 758 Lassen on Great Northern RR, Hwy 299 <Nubeiber> Comment
  RSA300130  Poa compressa J. T. Howell 1974-7-10 50553 Lassen Elysian Valley; Sierra Nevada 1326 Comment
  RSA716274  Poa cusickii L. Ahart, John Dittes 2005-6-2 11927 Lassen about 1.4 miles 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. 1499 Comment
  UCD90918  Poa cusickii Leo Whitney 1935-6-10 3214 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UC1024814  Poa cusickii subsp. cusickii Leo Whitney 1935-6-19 3265 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest 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
  UC1533157  Poa cusickii subsp. cusickii G. Schoolcraft 1986-6-25 1644 Lassen 3 mi nw Termo 1615 Comment
  UCD91789  Poa palustris A. A. Beetle 1941-6-28 2798 Lassen 10 miles west of Chester. 1524 Comment
  UCD91978  Poa pratensis L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  SEINET10523388  Poa pratensis Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3113 Lassen 6 mi N of Hallelujah Jct. on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 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
  CAS-BOT-BC255025  Poa secunda Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 Lassen 13.5 miles E of Susanville Comment
  JEPS127715  Poa secunda Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -170 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  RSA647530  Poa secunda Marion P. Harthill 1972-6-17 820 Lassen Madeline. 1677 Comment
  UCR266833  Poa secunda G. B. Stabler 1922-7-9 s.n. Lassen Constantia [former settlement, in Long Valley 45 miles (72 km) southeast of Susanville] 1372 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-BC236257  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
  CAS-BOT-BC247052  Poa secunda subsp. juncifolia Ralph K. Gierisch 1968-7-11 3352 Lassen Lassen National Forest, Harvey Valley - Dixie Spr. 1706 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
  SEINET7294034 Image available Poa secunda subsp. juncifolia John Thomas Howell, Gordon H. True; Margaret Williams 1973-1 49460 Lassen Elysian Valley, W of Janesville 1326 Comment
  UC1143013  Poa secunda subsp. juncifolia August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mt; Lassen Nat'l Forest 1706 Comment
  UC188907  Poa secunda subsp. juncifolia Milo S. Baker Lassen Dixie Valley Comment
  UCD32661  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2057 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  UCD92243  Poa secunda subsp. juncifolia Beecher Crampton 1960-6-18 5713 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC236177  Poa secunda subsp. secunda Doris Kildale Gillespie 1930-5-14 9379 Lassen Fredonia Pass near Susanville Comment
  UC1024836  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3220 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132871  Poa secunda subsp. secunda A. Simontacchi 1940-5-28 784 Lassen 3.2 mi wsw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132875  Poa secunda subsp. secunda A. Simontacchi 1940-5-27 770 Lassen 9.3 mi nw Crater lake; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1136988  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 219 Lassen Lassen Nat'l Forest 1722 Comment
  UCD90487  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  UCD92016  Poa secunda subsp. secunda A. H. Shunk 1923-1 14 Lassen Hayden Hill. Comment
  SEINET10443291  Poa secunda var. secunda M. Church 2016-6-10 3 Lassen E of Hwy 395, N of Hallelujah Junction. 1442 Comment
  UC1609359  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5675 Lassen ca. 11 mi. (air) n.-n.w. Poison Lake (n. side of 34N12 just e. of the R.R. at Halls Flat Well); Halls Flat Well 1737 Comment
  UCD80867  Pogogyne floribunda Robert E. Preston 2007-7-8 2570 Lassen Big Valley Mtns, 0.4 mi NE of Big Valley Summit, along Hwy 299. 1396 Comment
  CHSC7768  Polemonium micranthum Beverly J. Wise 1969-4-20 92 Lassen 13.2 mi. East of Susanville on Las. Co. Rd. 215. 1463 Comment
  CHSC96705  Polemonium occidentale Gordon Leppig 1998-7-12 949 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  JEPS17614  Polemonium occidentale Rimo Bacigalupi 1955-7-20 5404 Lassen on grade 2.3 mi s Patterson Ranger Station ([and 0.8 mi s of Lassen-Modoc county line], meadowy spots along East Creek, southern end of the Warner Mountains); Modoc National Forest, Warner Mountains, East Creek 2011 Comment
  SD61072  Polemonium occidentale Darley F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mountains, Modoc Natl. Forest 2012 Comment
  CHSC532  Polyctenium fremontii 1944-6-30 Lassen Grasshopper Valley. 1624 Comment
  NY182333  Polyctenium fremontii H. D. D. Ripley 1944-5-30 5970 Lassen South of Ravensdale. 1691.6 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
  CDA20360  Polyctenium fremontii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; No other data provided. 0 Comment
  SEINET3197107 Image available Polyctenium fremontii var. confertum Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1610 Comment
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  SEINET5326411  Polyctenium williamsiae G. Schoolcraft 1998-5-19 2707 Lassen S. end Mud Flat. 1341 Comment
  CAS-BOT-BC167846  Polygala subspinosa F. J. Hermann 1972-5-17 24760 Lassen Ca. 18 miles N. Litchfield 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
  GMDRC7733  Polygala subspinosa J. M. Andre, G. Clifton 1993-6-1 33410 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  CHSC4777  Polygonum R. Carter 1967-6-27 556 Lassen Ca. 100 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  UC1136918  Polygonum George A. Fischer, Irwin H. Johnson 1933-7-12 F 192 Lassen Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley 1694 Comment
  UC1101132  Polygonum amphibium var. stipulaceum Verne Grant and Irving Schneider 1947-9-5 8369 Lassen by Sam Webb's Place (Spaulding) (nw shore of lake); Eagle Lake Comment
  CHSC117541  Polygonum aviculare Lowell Ahart; John Dittes 2016-7-13 21133 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC99299  Polygonum aviculare Lowell Ahart; John Dittes 2008-6-20 14931 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
  RSA104503  Polygonum douglasii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 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
  JEPS46148  Polygonum douglasii subsp. spergulariiforme Duncan Dunning 1921-8-11 Lassen 3 mi s Antelope Mountain (sw of Eagle Lake); Martin Spring Comment
  SEINET11933855  Polygonum kelloggii N. H. Holmgren, Holmgren, P. K. 1980-1 9466 Lassen Madeline Plains, along US Hwy 395, 5.6 km S of Madeline, T36N, R13E, S9 1620 Comment
  CAS-BOT-BC419857  Polygonum polygaloides subsp. confertiflorum John Thomas Howell 1976-7-20 52031 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC66256  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1996-6-24 7856 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally abundant near a ditch on the W side of the meadow ca. 0.3 mi S of the cabins. 1633 Comment
  CHSC99126  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2008-6-22 15038 Lassen About 220 yards northwest 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
  UC1594529  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1992-7-16 5104 a Lassen on s side of Hwy 44 1.2 mi se County Rd. A21 (between Old Station and Susanville); Long Lake 1745 Comment
  CHSC4773  Polygonum polygaloides subsp. kelloggii R. Carter 1967-6-27 559 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 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
  CHSC60385  Polygonum polygaloides subsp. kelloggii Mary Ann Showers 1992-6-12 2529 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  UC1136190  Polygonum polygaloides subsp. kelloggii A. Simontacchi 1940-5-28 781 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1609434  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald and Lowell Ahart 1993-8-3 5749 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor, e side of swamp); Cooper Swamp 1932 Comment
  UC773864  Polygonum polygaloides subsp. kelloggii L. R. Short and Wm. Gansberg 1936-6-8 S- 390 Lassen Burgess Spring Experimental Range Lassen <National> Forest 1743 Comment
  CAS-BOT-BC419904  Polygonum polygaloides subsp. kelloggii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50649 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  UC1191236  Polygonum ramosissimum Verne Grant and Irving Schneider 1947-8-1 8227 Lassen irrigation ditch running sw into State Fish and Game Nesting area (w end of Section 19); Madeline Plain Comment
  POM203797  Polygonum sawatchense J. T. Howell 1934-7-9 12528 Lassen Harvey Valley. Comment
  UCD100686  Polygonum spergulariiforme J. M. Tucker 1950-7-25 1976 Lassen 33 miles northwest of Susanville, on road from Pittville. Comment
  CAS-BOT-BC232546  Polypogon monspeliensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16346 Lassen Along margin of drainage gulley below reservoir, N of road 13.5 miles E of Susanville Comment
  CHSC113811  Porterella carnosula Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18727 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29892  Porterella carnosula Robin L. Ondricek 1978-7-5 87 Lassen The ne edge of Mahogany Lake between the water and the trees. 2057 Comment
  CHSC66242  Porterella carnosula Vernon H. Oswald; Lowell Ahart 1996-6-24 7854 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally common on the dry bed of a ditch on the W side of the meadow ca. 0.3 mi S of the cabins. 1633 Comment
  CHSC71386  Porterella carnosula V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9259 Lassen Moll Reservoir in Ash Valley southeast of Adin. 1615 Comment
  JEPS103627  Porterella carnosula Lisa Schultheis 1995-6-27 224 -95 Lassen large vernal pool at corner of 33N56Y and 33NO6. W of Champs Flat Comment
  JEPS17746  Porterella carnosula Rimo Bacigalupi with G. T. Robbins 1955-7-20 5408 Lassen 4.4 mi s Patterson Ranger Station (Long Valley, southern end of Warner Mts., Modoc National Forest); Modoc National Forest, s end of Warner Mts. 2057 Comment
  UC1143018  Porterella carnosula August L. Hormay 1934-5-14 Lassen Little Harvey Valley; Lassen National Forest, Little Harvey Valley 1676 Comment
  UC1573183  Porterella carnosula Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9007 Lassen road from Bieber to Lookout 0.5 mi s Modoc County Line (Big Valley, Pit River Watershed); Pit River Watershed, Big Valley 1249 Comment
  SEINET10460831  Porterella carnosula Gillett 1957-7-29 GILLETT 938 Lassen Marsh area near west end of lake, on drying mud flats 2073 Comment
  SEINET10460832  Porterella carnosula Robinson Robinson 71 Lassen 1737 Comment
  SEINET10460834  Porterella carnosula Rimo Bacigalupi 1955-7-20 Bacigalupi 5408 Lassen Drying clay-loam mud at edges of pool at low spot in Long Valley, 4.4 miles south of Patterson Ranger Station, Modoc National Forest, southern end of Warner Mts. 2057 Comment
  SEINET10972533  Porterella carnosula Mary Susan Taylor 1974-1 Taylor 308 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  CHSC4804  Potamogeton filiformis R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  SEINET3892719  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field.; 0 1280 Comment
  UC1100074  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8244 Lassen e end of Tule Lake Comment
  UC1100075  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8243 Lassen e end of Tule Lake 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
  UC1713222  Potamogeton pusillus subsp. pusillus Herbert L. Mason and Verne Grant 1947-7-9 13292 Lassen 5 miles east of Bieber Comment
  CAS-BOT-BC454090  Potamogeton pusillus subsp. tenuissimus Wm. Anderson 1960-6-16 s.n. Lassen Barrow pit along county road 1 mi. nw. of Tanner Ranch, Honey Lake Valley Comment
  CHSC76030  Potamogeton richardsonii Vernon H. Oswald 1999-8-4 9833 Lassen Mountain Meadows Reservoir southwest of Westwood. Along the edge of the reservoir. 1539 Comment
  RSA772322  Potamogeton richardsonii Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  UCR228123  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  UC1598197  Potentilla basaltica G. L. Clifton 1988-7-20 18126 Lassen near Ash Valley; Likely Quad., near Ash Valley 1541 Comment
  CHSC105242  Potentilla gracilis var. fastigiata Lowell Ahart; John Dittes 2010-7-31 16985 Lassen 10 yards northeast of 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
  CHSC4985  Potentilla gracilis var. fastigiata R. Clicquennoi 1967-6-24 12 Lassen NW corner of Eagle Lake on highway 139. 1524 Comment
  OBI77047  Potentilla millefolia Anthony Baniaga 2011-6-1 296 Lassen Lassen NF. Bogard Work Station helicopter landing ara, W of RR tracks, N of rd to Crater lake. Pine Crk Valley quad T32N R8e sec 33 NE of SW 1737 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
  UC1191492  Potentilla rivalis Verne Grant, Irving Schneider 1947-8-1 8236 Lassen e end of Tule Lake Comment
  CHSC66401  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1996-6-17 7787 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 trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  UC1523752  Prunella vulgaris Gary Schoolcraft 1981-6-25 482 Lassen East Fork of Willard Creek 1584 Comment
  SD149134  Prunella vulgaris var. lanceolata John Thomas Howell, Gardon H. True and Margaret Williams 1973-6-28 49443 Lassen Elysian Valley, west of Janesville. 1326 Comment
  CAS-BOT-BC159779  Prunus andersonii James Moffitt 1934-6-27 147 Lassen Near Milford Comment
  CHSC1579  Prunus andersonii A. Stone 1937-5-14 Lassen Honey Lake region. Comment
  CHSC23560  Prunus virginiana var. demissa W. O. Baum 1971-7-6 34 Lassen At top of s slope on Gallatin Peak. 2103 Comment
  CAS-BOT-BC357282  Pseudognaphalium microcephalum Margaret Williams 1974-7-27 74 -L-54 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC239800  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51997 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD91494  Pseudoroegneria spicata A. A. Beetle; G. L. Stebbins Jr. 1942-5-30 3363 Lassen 10 miles NE of McArthur. Comment
  UCD91511  Pseudoroegneria spicata August L. Hormay 1929-6-1 s.n. Lassen Susanville Forest Office. Comment
  JEPS51149  Pseudostellaria jamesiana Brown and Wieslander 1922-7-28 51 Lassen Martin Sprs. Eagle Lake; , Martin Sprs Comment
  JEPS97412  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald and L. Ahart 1995-6-19 6897 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  NY702519  Psoralidium lanceolatum J. T. Howell 1934-6-10 11860 Lassen Doyle Comment
  CAS-BOT-BC72538  Pteridium aquilinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49175 Lassen Elysian Valley northwest of Janesville 1325 Comment
  UCD136178  Pteridium aquilinum var. pubescens John Thomas Howell; Gordon H. True 1973-5-12 49175 Lassen Sierra Nevada, Elysian Valley northwest of Janesville. 1325 Comment
  CHSC105259  Pterospora andromedea Lowell Ahart; John Dittes 2010-7-31 17007 Lassen On the sout side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  POM253219  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile east of Westwood. 1524 Comment
  HSC63951  Puccinellia distans Teresa Prendusi 1980-7-9 1114 Lassen Horse Camp Spring about 39 mi. N of Susanville. 1707 Comment
  UCD34874  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs rec. area. Comment
  CDA42960  Puccinellia lemmonii L. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. Comment
  CHSC93243  Puccinellia lemmonii John Dittes; Scott Chamberlain 2004-6-28 1015 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1445 Comment
  JEPS103194  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  UCD149767  Puccinellia lemmonii William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CHSC7722  Purshia tridentata Beverley J. Wise 1969-5-4 94 Lassen 3.0 mi west on Shaeffer Mtn Lookout rd off Hwy 395, 27.4 mi. east of Susanville. 2042 Comment
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  UCR17285  Purshia tridentata Frank C. Vasek 1975-7-11 750711- 36 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC147817  Purshia tridentata var. tridentata Clarence R. Quick 1961-6-21 61 -33 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC147867  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen Near outlet of Widow Lake, ca. 50 yards from lake 2057 Comment
  UC1924592  Purshia tridentata var. tridentata Debra Valov 2006-5-28 2006002 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1284 Comment
  UC773873  Purshia tridentata var. tridentata L. R. Short and Wm. Gansberg 1936-7-9 S- 482 Lassen Burgess Spring Experimental Range; Lassen National Forest 1792 Comment
  CAS-BOT-BC462880  Pyrola asarifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 Comment
  CHSC59803  Pyrola dentata Mary Meyer 1980-7-31 Lassen Forest adjacent to road. 1828 Comment
  RSA0084312  Pyrola dentata Diana D. Jolles, Erik M. Beaston 2011-7-5 441 Lassen Lassen National Forest near area where Susan River flows through Clover Valley. Thinning unit near intersection of A-21 road and Silver Lake Road some miles south of Highway 44. 1784 Comment
  POM39972  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS19176  Pyrrocoma hirta var. lanulosa Leland S. Smith 1922-1 18 Lassen Windmill flat, nw Lassen County Modoc National Forest Comment
  UC506929  Pyrrocoma hirta var. lanulosa George A. Fischer and Irwin H. Johnson 1933-7-14 F 242 Lassen Patterson R.S. Lassen National Forest, Patterson R.S. 1737 Comment
  CHSC91924  Pyrrocoma lucida L. P. Janeway 2005-7-31 8512 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  CAS-BOT-BC105246  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen SW of Susanville on Gold Run Road 1341 Comment
  UCD46622  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles west of Susanville. 1371 Comment
  UCD46640  Quercus kelloggii Annie M. Alexander; Louise Kellogg 1946-8-14 5158 Lassen On hill back of town. Susanville. Comment
  UCD46729  Quercus kelloggii Verne Grant 1947-9-7 8400 Lassen Along Highway 395 west of Honey Lake, several miles south of Janesville, Lassen County, California. Comment
  UC1609182  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-5-12 5380 Lassen canal crossing Hwy 44 3.5 mi nw A21 (to Westwood) (n side of road and e side of canal) 1729 Comment
  CHSC60765  Ranunculus alismifolius var. davisii Vernon H. Oswald; Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  CHSC6244  Ranunculus alismifolius var. hartwegii R. Gein 1946-6-11 Lassen Eagle Lake. 1580 Comment
  CHSC7729  Ranunculus alismifolius var. lemmonii Beverley J. Wise 1969-3-4 86 Lassen 7 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1524 Comment
  HSC95301  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC112451  Ranunculus aquatilis var. aquatilis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18797 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC91192  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
  UC1101368  Ranunculus aquatilis var. capillaceus Herbert L. Mason and Verne Grant 1947-7-9 13290 Lassen 5 mi e Bieber (irrigation ditch) Comment
  CHSC112752  Ranunculus aquatilis var. diffusus Lowell Ahart; John Dittes 2013-7-23 18891 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
  CHSC13592  Ranunculus cymbalaria D. L. Stites 1967-6-24 36 Lassen Collected ca. 3 1/2 mi. se ELBS, Upper Murrer Meadow. 1524 Comment
  HSC23500  Ranunculus cymbalaria var. saximontanus Bill Wilson 1967-6-30 59 Lassen Slough Point, 2 mi. W across lake from Eagle Lake Biological Station, 10 mi. N of Susanville 1585 Comment
  CHSC60612  Ranunculus flammula var. ovalis Mary Ann Showers 1992-6-13 2549 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC55400  Ranunculus glaberrimus Charlie Crannell 1991-4-21 16 Lassen South end of Lassen County youth camp property bordering Eagle Lake Field Station; 200 ft from Eagle Lake. 1560 Comment
  CHSC67295  Ranunculus glaberrimus James D. Jokerst 1991-5-29 3313 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  RSA715670  Ranunculus occidentalis L. Ahart, John Dittes 2005-6-1 11857 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  CHSC108026  Ranunculus occidentalis var. occidentalis Lowell Ahart; John Dittes 2011-6-20 17479 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS107460  Ranunculus occidentalis var. occidentalis Lowell Ahart, John Dittes 2005-6-1 11857 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1587083  Ranunculus sceleratus G. Schoolcraft 1991-6-27 2174 Lassen 3 mi e Susanville (n of Johnstonville Rd, along ditch) 1280 Comment
  CHSC63415  Ranunculus testiculatus Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6316 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. At a watering trough. 1871 Comment
  CHSC71097  Ranunculus testiculatus Vernon H. Oswald; Lowell Ahart 1998-5-22 9101 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
  CHSC8729  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01. Comment
  CAS-BOT-BC362886  Ratibida columnifera John Thomas Howell 1974-7-9 50486 Lassen SW. of Wildcat Point, Eagle Lake 1554 Comment
  CAS-BOT-BC58196  Rhododendron columbianum Brighton C. Cain 1925-8-24 101 Lassen Mt. Lassen Vilcanic National Park, 1 mi. below Drakesbad. 1645 Comment
  CAS-BOT-BC58195  Rhododendron columbianum Ben Howard; C. R. Quick 1949-9-14 49 -48 Lassen Jennie Spring, Jennie Mt., N. of Westwood, Lassen National Forest. Comment
  UC79702  Ribes aureum Walter E. Bryant Lassen Comment
  CAS-BOT-BC93393  Ribes cereum Carl B. Wolf 1929-9-1 3780 Lassen Mount Lassen National Park, between grassy and Snag Lakes. Comment
  NY455007  Ribes cereum B. M. Bartholomew 1988-7-22 4503 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  RSA0037147  Ribes cereum J. R. Keck Jr. 1977-7-13 s.n. Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. 1830 Comment
  RSA31677  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CHSC7761  Ribes roezlii Beverly J. Wise 1969-5-17 99 Lassen 16.5 mi. N. W. of Susanville on the west side of Gallatin Creek, 1/4 mi. south of Eagle Lake. 1554 Comment
  UC1127641  Ribes roezlii A. Simontacchi 1940-6-4 723 Lassen 6.8 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC747328  Ribes roezlii G. Thomas Robbins 1945-10-6 2150 Lassen near sw summit Crater Lake Mountain; Lassen National Forest 2194 Comment
  SEINET10482949  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 285 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS49252  Ribes velutinum W. L. Jepson 1918-8-5 7820 Lassen near South Fork Peak 1463 Comment
  SEINET177615 Image available Ribes velutinum M. E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC363012  Rigiopappus leptocladus Doris Kildale Gillespie 1930-5-12 9341 Lassen 2 miles north of Susanville on road to Alturas Comment
  JEPS30485  Rigiopappus leptocladus Peter H. Raven and Otto T. Solbrig 1958-6-17 13302 Lassen along United States Highway 395 8.0 mi n Madeline Comment
  CDA8540  Rigiopappus leptocladus T. C. Fuller 1963-6-1 10624 Lassen Road to Susanville, 2.2 miles south of Pittville. 0 Comment
  JEPS34911  Rigiopappus leptocladus L. S. Smith 1920-6-15 Lassen McKenzie spring Bieber Range, McKenzie spring 1310 Comment
  UCD107036  Rorippa curvisiliqua Tim Kuhn 2006-7-18 11 Lassen Eagle Lake Ranger District. Comment
  CHSC36490  Rorippa nasturtium-aquaticum Theresa Costa 1982-6-4 36 Lassen Along Willow Creek in Murrers Upper Meadow. Comment
  POM312442  Rorippa sinuata Verne Grant, Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  SEINET11908427  Rosa californica M. Sacks, Detzer 1977-1 7 Lassen 1mi SE of Milford, 1mi NW of Laufman Ranger Station, T26N, R14E, Sec 1 1341 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
  JEPS107934  Rosa woodsii subsp. ultramontana Lowell Ahart, John Dittes 2005-6-2 11944 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, about 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  JEPS45639  Rosa woodsii var. ultramontana W. L. Jepson 1918-8-3 7801 Lassen Honey Lake Valley 1219 Comment
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC421956  Rumex acetosella John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49507 Lassen Elysian Valley, west of Janesville 1325 Comment
  SEINET10479396  Rumex acetosella Paul Gallian, David B. Dunn 1971-6-2 Gallian 482 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus-Jeffrey Pine on mountain range to W at approximately the same altitude. 1250 Comment
  CHSC112845  Rumex crispus Lowell Ahart; John Dittes 2013-7-22 18865 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC465808  Rumex crispus J. Burtt Davy Jun 17 1897-Jun 24 1897 3378 Lassen Honey Lake Valley Comment
  UC748316  Rumex maritimus Annie M. Alexander and Louise Kellogg 1946-8-11 5154 A Lassen nw end Eagle Lake (Sam Webb's Hunting Cabins) Comment
  CAS-BOT-BC109330  Rumex paucifolius Alice Eastwood; John Thomas Howell 1940-6-15 8315 Lassen Upper Willow Creek east of Hayden Hill. Comment
  CHSC101061  Rumex paucifolius John Dittes 2008-5-22 1530 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 700 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace of Willow Creek. 482 Comment
  CHSC65318  Rumex salicifolius var. salicifolius Vernon H. Oswald; Lowell Ahart 1995-8-14 7188 Lassen Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy.395, N of Susanville. 1645 Comment
  UC452568  Rumex salicifolius var. salicifolius Franklin P. Nutting Lassen n side Dixie Mts. Comment
  JEPS114648  Rumex salicifolius var. triangulivalvis Lowell Ahart, John Dittes 2008-6-20 14930 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
  JEPS121294  Rumex triangulivalvis Lowell Ahart, John Dittes 2013-7-22 18867 Lassen 30 yards S of the man-made pond, about 120 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  HSC29859  Rumex venosus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19300 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC445671  Sagittaria cuneata L. S. Smith 1918-7-22 1009 Lassen Modoc National Forest. Blue Lake 1874 Comment
  CHSC27591  Sagittaria cuneata J. D. Prouty 1978-7-23 24 Lassen Upper Murrers Meadow, SE of Eagle L. 1545 Comment
  JEPS88426  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1996-8-1 8107 Lassen receding shore of the Mountain Meadows Reservoir ne Indian Ole Dam (sw of Westwood); Mountain Meadows Reservoir, ne of Indian Ole Dam 1539 Comment
  CAS-BOT-BC445673  Sagittaria cuneata George W. Gillett 1957-7-28 918 Lassen Lassen Volcanic National Park. Butte Lake 1844 Comment
  CAS-BOT-BC445675  Sagittaria cuneata B. Trowbridge 1977-7-11 5985 Lassen In Willow Creek, vicinity of Rice Canyon, northeast of Susanville 1706 Comment
  CAS-BOT-BC132713  Salix A. T. Whittemore 1979-4-21 79 -040 Lassen South shore of Eagle Lake Comment
  UCD110753  Salix boothii T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volc. Nat'l Park. 2225 Comment
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Jul 11 2013
  NY188399  Salix eriocephala subsp. mackenzieana R. D. Dorn 1972-6-2 1492 Lassen Willow Creek, about 15 miles SSE of Adin 1524.0 Comment
  CHSC99285  Salix exigua Lowell Ahart; John Dittes 2008-6-22 15043 Lassen On the bottom of a deep ditch, on the south side of the road levee, open meadow area, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. Comment
  SEINET3260826  Salix exigua Marcus E. Jones 1897-6-25 Lassen Susanville. 1340 Comment
  UC481924  Salix exigua var. hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen at edge of Pit River McArthur 960 Comment
  RSA716142  Salix jepsonii L. Ahart, John Dittes 2005-6-2 11947 Lassen About 1.5 miles NE of the Anderson Ranch home. Long Valley. About 6 (air) miles N of the intersection of Scott Road and Hwy 70. 7.5 (air) miles NW of Hallelujah Jct. 1602 Comment
  SEINET10932103  Salix lasiandra Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 889 Lassen Collected 3 mi n of milford on hwy 395 at honey lake campgrounds. Comment
  JEPS114627  Salix lasiandra subsp. lasiandra Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  CAS-BOT-BC128170  Salix lasiandra var. lasiandra John Thomas Howell; Gordon H. True 1973-8-1 50149 Lassen Transition Zone forest in areas of granitic rock, Gold Run Creek road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  CAS-BOT-BC124634  Salix lemmonii John Thomas Howell 1976-7-20 52016 Lassen along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC124637  Salix lemmonii M. B. Kildale 1926-9-11 2788 Lassen Susanville 1524 Comment
  CHSC9572  Salix lemmonii E. L. Smith 1971-4-28 946 B Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  POM209555  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
  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
  UC1609475  Salix lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-3 5489 Lassen n. of Hwy. 44 between Poison Lake and Susanville (Bridge Creek Spring Rd. (Lassen 112, Forest 31N06) at Bridge Creek, s. edge of rd.) 1746 Comment
  CHSC66404  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1996-6-17 7790 Lassen Modoc Plateau. Bizz johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of the Susan River at the Hwy. 36 bridge. 1402 Comment
  CAS-BOT-BC126176  Salix scouleriana John Thomas Howell 1969-8-7 45885 Lassen Between Butte Lake and Cinder Cone, Lassen Park Comment
  CHSC71874  Salsola tragus Vernon H. Oswald; Lowell Ahart 1998-9-8 9582 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  JEPS78095  Salsola tragus Gary W. Zamzow 1972-7-18 84 Lassen beside Highway 395, 3 mi n Hallelujah Junction; n of Hallelujah Junction 1371 Comment
  CAS-BOT-BC176903  Salsola tragus Margaret Williams; Steven Williams 1974-7-26 74 -L-7 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC106175  Salvia aethiopis Lowell Ahart; John Dittes 2010-8-30 17091 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CDA40944  Salvia dorrii subsp. dorrii Vernon H. Oswald & Lowell Ahart 1998-6-4 9145 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. Comment
  CHSC23496  Sambucus mexicana Wayne O. Baum 1971-7-6 71 -74 Lassen Basalt outcrop. . 2042 Comment
  UC1523804  Sambucus mexicana Gary Schoolcraft 1982-8-4 850 Lassen on road to Hayden Hill about 1/2 mi s Hwy 139 (37-10-29) 1524 Comment
  JEPS88210  Sanguisorba annua Vernon H. Oswald and Lowell Ahart 1996-6-17 7787 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at the Hwy 36 bridge spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  UCD127944  Sanicula bipinnatifida W. W. Robbins 1926-4-17 534 Lassen Grass Valley. Comment
  JEPS51512  Saponaria officinalis W. L. Jepson 1918-8-15 7994 Lassen Pass e South Fork Peak (not many mi from Madeline); Pass e of South Fork Peak 1706 Comment
  CDA23525  Sarcobatus vermiculatus M. R. Pryor 1953-9-22 Lassen 0.5 mile west of Jack Crow s property, Stacey. 0 Comment
  CDA23526  Sarcobatus vermiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 A Lassen Wendel. 0 Comment
  CHSC110311  Sarcobatus vermiculatus L. P. Janeway; B. Castro 2012-7-2 10923 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
  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
  UC1542944  Saxifraga nidifica var. nidifica G. Schoolcraft 1987-4-29 1685 Lassen Lonkey Hill 1432 Comment
  RSA252375  Schoenoplectus acutus var. occidentalis Robert F. Thorne, C. W. Tilforth 1969-9-6 39256 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  CHSC99154  Scirpus acutus var. occidentalis Lowell Ahart; John Dittes 2008-6-22 15018 Lassen On the east end of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  JEPS28334  Scirpus congdonii George W. Gillett 1957-8-9 1011 Lassen near Summit Lake (East Fork Hat Creek); Lassen Volcanic National Park, East Fork Hat Creek 2026 Comment
  UC2119  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3291 Lassen beside sloughs Honey Lake Valley, beside sloughs Tule Confederacy (Tule Confederacy, Honey Lake Valley) Comment
  UC2156  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3294 Lassen Byers' meadows , Byers' meadows (Honey Lake Valley) Comment
  UC1100881  Scirpus nevadensis Verne Grant and Irving Schneider 1947-9-5 8376 Lassen nw shore Eagle Lake (by Sam Webb's place; Spaulding); nw shore Eagle Lake by Sam Webb's place Comment
  SACT002079  Scribneria bolanderi Malcolm Nobs, Galen Smith 1949-5-29 Lassen Vernal meadowland. Marsh, on Great Northern Railroad, Highway 299, Nubeiber. Comment
  SEINET13751284  Scrophularia desertorum N. H. Holmgren, P. K. Holmgren 1978-6-11 8922 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  UC767449  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  RSA450332  Scutellaria holmgreniorum Gary Schoolcraft 1986-6-25 1641 Lassen S. of Observation Peak about 1.5 mi. east of Post Camp. 1677 Comment
  RSA123264  Scutellaria nana L. R. Short, J. Warren 1935-6-23 S- 445 Lassen Lassen Forest, MDM, Burgess Spr. Exp. Range. 1809 Comment
  SBBG125002  Scutellaria nana C. B. Hardham -Jun-2000 Lassen Gold Run Crk, S of Susanville Comment
  UC1137775  Scutellaria nana August L. Hormay 1934-7-2 Lassen 1/4 mi nw of Black's Mountain; Lassen National Forest 1706 Comment
  UC1549237  Scutellaria nana Richard Olmstead 1984-6-27 586 Lassen turnoff 14 mi s of Ravendale (12.2 mi e of US 395, Rye Patch Canyon Road); Rye Patch Canyon Road 1566 Comment
  RSA483309  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi south of Ravendale, lower slopes Observation Peak Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  CAS-BOT-BC46021  Sedum lanceolatum John Thomas Howell; Gordon True; Wayne Dakan 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2346 Comment
  CDA38660  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 PDR# 1535022 Lassen South of Adin; Hwy. 139 at Milepost 58. 0 Comment
  CHSC60327  Senecio fremontii var. fremontii Mary Ann Showers 1992-6-28 2700 Lassen Lassen Volcanic National Park. Cliffs west of Soda Lake and below tarn at base of north facing cirque between Pilot Pinnacle and Mt. Diller. 2438 Comment
  RSA0012449  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen east of Westwood, the margin bordered with sagebrush, where a tongue of Upper Sonoran protrudes into the Transition Life Zone. Comment
  SEINET10908456  Senecio integerrimus Paul Gallian, David B. Dunn 1971-6-2 Gallian 473 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. Comment
  UC1924243  Senecio integerrimus var. exaltatus Debra Valov 2004-6-8 2004241 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 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-BC363984  Senecio integerrimus var. major John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49176 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC364153  Senecio serra B. Bartholomew; B. Anderson 1988-7-22 4496 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  CAS-BOT-BC364253  Senecio triangularis B. C. Cain 1925-8-24 108 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  UC1562885  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  RSA768029  Sidalcea glaucescens L. Ahart, John Dittes 2010-7-31 17016 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  UCD107434  Sidalcea glaucescens Tim Kuhn 2006-1 15 Lassen Eagle Lake Ranger District. Comment
  SBBG128040  Sidalcea glaucescens L. Ahart, J. Dittes 2010-7-31 17016 Lassen S side of the rd, ca. 50 yards E of the large culvert, where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1516 Comment
  UCD18967  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). 1950 Comment
  POM230480  Sidalcea oregana subsp. oregana D. D. Keck, Jens Clausen 1935-6-24 3740 Lassen 2 miles S. of Ravendale, Comment
  UC1553380  Sidalcea oregana subsp. spicata G. Schoolcraft 1988-7-7 1820 Lassen at Painter Creek and Horne Ranch Rd. crossing 1645 Comment
  UC408410  Sidalcea oregana subsp. spicata Milo S. Baker Lassen Dixey Valley Comment
  RSA339988  Sidalcea oregana var. maxima Noel Holmgren, Patricia K. 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
  CHSC5229  Silene douglasii J. B. Kimsey 1946-6-10 Lassen Eagle Lake. Pelican Point. 1584 Comment
  CAS-BOT-BC389264  Silene lemmonii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  SEINET8879824  Silene menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc NF, along Blue Lake Road N of Blue Lake, above Parsnip Creek, ca 15 miles ESE of Likely. 1860 Comment
  SDSU4478  Silene menziesii D. F. Howe 1964-8-1 3908 Lassen Parsnip Creek, Warner Mts., Modoc National Forest. 1829 Comment
  SJSU5887  Silene menziesii H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CHSC91925  Silene nuda L. P. Janeway 2005-7-31 8511 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  CAS-BOT-BC389544  Silene nuda Paul F. Covel 1937-7-19 755 Lassen Westwood Airport Comment
  UC465657  Silene occidentalis subsp. occidentalis Franklin P. Nutting Lassen Silver Lake Comment
  CHSC111252  Sisymbrium altissimum L. P. Janeway; B. Castro 2012-7-2 10935 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  CHSC91206  Sisymbrium altissimum Lowell Ahart; John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CHSC91318  Sisymbrium altissimum Lowell Ahart; John Dittes 2005-6-1 11850 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
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  SEINET11572879  Sisymbrium altissimum M. J. Williams 1974-7-26 74 -L-33 Lassen 2 mi. W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  CAS-BOT-BC75077  Sisymbrium altissimum Mrs. H. C. Cantelow 1940-5-31 3759 Lassen 11 miles east of McArthur. Comment
  SEINET11987253  Sisymbrium altissimum J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4135 Lassen 65 mi S of Alturas, along edge of hwy #395 Comment
  RSA0035823  Sisyrinchium bellum Lowell A. Ahart, John Dittes 2008-6-20 14964 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
  UC4218  Sisyrinchium bellum J. Burtt Davy Jun 17 1897-Jun 24 1897 3302 Lassen Tule Confederacy Adobe Meadows; Honey Lake Valley Comment
  POM82470  Sium suave Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CDA38566  Sium suave F. A. Taylor 1933-7-5 s.n. Lassen Bieber. 0 Comment
  NY820340  Solanum triflorum J. T. Howell 1973-7-10 49797 Lassen Susanville, in city park 1295 Comment
  HSC21315  Solanum triflorum D. E. Anderson 1962-8-6 2331 Lassen Lake at foot of Tule Mtn. Comment
  CDA8717  Solidago californica Gary Schoolcraft 1994-8-29 2426 Lassen About 1 mile west of Susanville up Piute Creek. Comment
  CAS-BOT-BC365367  Solidago elongata L. S. Smith 1918-8-11 1022 Lassen Modoc National Forest. Camp One Comment
  UCD107501  Solidago spectabilis Tim Kuhn 2006-1 47 Lassen Eagle Lake Ranger District. Comment
  CAS-BOT-BC364906  Solidago velutina subsp. californica Clare B. Hardham 1969-8-28 17437 Lassen Slope west of Janesville Comment
  POM38169  Sonchus asper Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CHSC113057  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2013-7-22 18846 Lassen West margin of a duck field, about 50 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC236547  Sorghum halepense Louella Bass 1980-7-29 EV 5 -80 Lassen Elysian Valley, Hwy. 395 at County Road 207, near Jamesville, Sierra Nevada Comment
  CHSC59194  Sparganium angustifolium Vernon H. Oswald; Lowell Ahart 1992-9-15 5214 Lassen Lassen Volcanic National Park. Island Lake located N of Bonte Pk. and ca. 1.5 mi W of Juniper Lake campgrounds. On the margin of the lake. 2164 Comment
  HSC95262  Sparganium emersum Gordon Leppig, J. Cromwell 1997-7-27 627 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95310  Sparganium emersum Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 691 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC27654  Sparganium emersum subsp. emersum Jerry Snodgrass 1978-7-11 50 b Lassen Papoose Creek, SE corner of Eagle L. Meadow; in pool. 1584 Comment
  CHSC64869  Sphaeromeria potentilloides var. potentilloides Vernon H. Oswald 1995-6-26 6934 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the e side of the road adjacent to a flat of low sagebrush. 1542 Comment
  JEPS103181  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  RSA0008983  Sphaeromeria potentilloides var. potentilloides Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UCD136228  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 1645 Comment
  CHSC61074  Spiranthes porrifolia Vernon H. Oswald 1993-8-3 5754 Lassen Cooper Swamp located E of Siver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  SEINET10700599  Stachys ajugoides var. rigida Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 142 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 Comment
  UC773921  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spring Experiment Range Lassen Forest 1795 Comment
  UC1951078  Stellaria borealis subsp. sitchana Debra Valov 2009-4-24 2009013 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  CHSC68859  Stellaria crispa Vernon Oswald; Lowell Ahart 1997-6-24 8610 Lassen South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  POM101721  Stellaria longipes F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  UCD99328  Stellaria longipes subsp. longipes Ratliff 1966-7-8 1 Lassen Harvey Valley Allot. - Plot 49. 1706 Comment
  CHSC4946  Stellaria longipes var. longipes R. Carter 1967-6-23 550 Lassen In meadow, 25 yds w of dam in Murrer's Meadow. 1584 Comment
  CHSC93702  Stellaria longipes var. longipes Lowell Ahart; John Dittes 2005-6-2 11992 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
  JEPS107846  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2005-6-2 11992 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
  CHSC92676  Stenotus acaulis L. P. Janeway; B. Castro 2005-7-10 8487 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  CDA8837  Stephanomeria exigua S. E. Piper 1943-7-3 Lassen Sierra Ordnance Depot, Herlong. 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
  JEPS17401  Stephanomeria exigua subsp. exigua Rimo Bacigalupi and G. T. Robbins 1955-7-21 5425 Lassen In drainage of Rush Creek, S of the Smoke Creek Ranch Road, 1.3 mi E of the Nevada State line and 17.5 mi E of U.S. Highway 395. 1341 Comment
  CAS-BOT-BC375595  Stephanomeria lactucina Margaret Williams; Steven Williams 1974-7-26 74 -L-12 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC1587037  Stephanomeria lactucina G. Schoolcraft 1991-7-30 2200 Lassen e slope Widow Mountain 1859 Comment
  CAS-BOT-BC375593  Stephanomeria lactucina Gary Schoolcraft 1982-7-14 785 Lassen West on Constantia 1463 Comment
  SEINET10474966  Stephanomeria spinosa Mary Susan Taylor 1982-8-19 Taylor 5020 Lassen T22N R17E sw/nw sec 5. Beckwourth Pass quad. Along dirt rd (old RR tracks), s of and paralleling Hwy 70, just se of Beckwourth Pass. Sagebrush Scrub; 5200 ft. Dry sandy soil. 1585 Comment
  JEPS36870  Stephanomeria tenuifolia Brown and Wieslander 1922-7-23 35 Lassen Martin Springs Eagle Lake Comment
  UCR67447  Stephanomeria virgata George K. Helmkamp 1990-9-23 D- 8 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  JEPS126469  Stipa thurberiana Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -039 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  SEINET10940334  Streptanthus cordatus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2606 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon juniper pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  SEINET958426  Stuckenia pectinata Verne Grant, Irving Schneider 1947-1 8184 Lassen East side of Tule Lake. Comment
  UC7234  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3397 Lassen Amedee Honey Lake Valley Comment
  UC1537510  Swertia albicaulis Gordon H. True Jr. 1936-6-25 539 Lassen e of Harvey Ranger Station; Harvey Valley 1767 Comment
  POM68227  Symphoricarpos acutus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CDA42242  Symphoricarpos rotundifolius var. rotundifolius Gordon Leppig, T. LaBanca 1998-7-13 964 Lassen Modoc National Forest. Blue Lake Ranch. 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
  UC773956  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1792 Comment
  CHSC5199  Symphyotrichum campestre 1944-7-5 Lassen Eagle Lake. Harvey Valley. 1695 Comment
  CAS-BOT-BC98933  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1917 Lassen Battle Creek Meadows - Lassen Butte Region Comment
  CHSC76082  Symphyotrichum frondosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8210 Lassen Just south of the parking area, about 1 mile south of the sign-in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1745661  Symphyotrichum frondosum Annetta M. Carter 1945-9-30 1724 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC762726  Symphyotrichum frondosum R. F. Hoover 1940-10-1 4660 Lassen near, between Janesville and Standish Honey Lake Comment