Search Results — 2000 specimen records retrieved (1586 records with coordinates)
(That's the default maximum. Contact Jason Alexander for larger data requests.)

Results for search: County=LASSEN; Source=All;   

Mapping Options:

BerkeleyMapper with county and bioregion layers
BerkeleyMapper without layers.
KML export
(Note: only records with coordinates are mappable)

Download Options:
Select all records · Select records with coordinates

Include annotations and voucher information

PLEASE NOTE: Due to changes in newer versions of Excel, directly copying text from the above selected results does not produce a usable table.
    Follow these steps:
      1. The contents of the selected results window must be copied into a text editor like TextEdit for Mac or WordPad for Windows
      2. The selected results must be saved as a new text document.
      3. This new text document can now be copied into Excel or imported as a tab delimited text file.

(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.

Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page.
Turn on yellow flags to show possible range discrepancies. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78036  Abies concolor John Thomas Howell 1976-7-19 51966 Lassen Gold Run Creek southwest of Susanville 1386 Comment
  CDA18380  Acer negundo G. D. Barbe 1978-7-11 2400 Lassen Madeline Plains; Madeline Plains, West Side Rd. W of Termo. 1615 Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  UC506997  Achillea millefolium George A. Fisher and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley; Lassen Natl. Forest Comment
  RSA152596  Achnatherum hymenoides I. L. Wiggins, Dorothy Wiggins 1961-6-11 16335 Lassen 13.5 miles east of Susanville. 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
  UC1024816  Achnatherum lemmonii Leo Whitney 1935-6-19 3263 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD50593  Achnatherum lemmonii L. Whitney 1933-7-7 s.n. Lassen Halls Flat, Lassen County. 1737 Comment
  UCD50709  Achnatherum lemmonii George A. Fischer; Irwin H. Johnson 1933-7-12 198 Lassen Grass Valley. 1696 Comment
  CAS-BOT-BC210742  Achnatherum nelsonii John Thomas Howell 1976-7-20 52026 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CHSC64900  Achnatherum nevadense Vernon H. Oswald 1995-6-19 6879 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  UCD50888  Achnatherum occidentale Beecher Crampton 1960-6-20 5733 Lassen 1/2 mile south Black's Mtn. Exper. Station, USDA Forest Service, 11 miles north Bogard Ranger Station, Lassen National Forest. 1706 Comment
  JEPS456  Achnatherum occidentale subsp. californicum G. S. Crew and C. S. Robinson 1927-6-25 29 Lassen near Westwood <Tet?>; Lassen Forest 1706 Comment
  UCD51042  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3296 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UC1133257  Achnatherum occidentale subsp. occidentale H. P. Hagge 1929-9-17 38 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  UC1024939  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-26 3334 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1137654  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 218 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest 1722 Comment
  UCD32665  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51167  Achnatherum occidentale subsp. pubescens A. H. Shunk 1923-8-1 s.n. Lassen Madeline. Comment
  JEPS102671  Achnatherum speciosum V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10034 Lassen NE of Doyle (Fort Sage Mountains, trailhead to top of mountain from the end of a 4WD road) 1798 Comment
  UC1031349  Achnatherum thurberianum Leo Whitney 1935-6-18 3267 Lassen 13 mi w Eagle Lake; Lassen National Forest, Ashurst Mountain 1584 Comment
  UC1133071  Achnatherum thurberianum A. Simontacchi 1940-6-13 859 Lassen 3/3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle 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
  UC769950  Achnatherum webberi R. F. Hoover 1940-9-29 4647 Lassen pass between Shaffer Mt. and Warren Peak Comment
  SBBG67342  Acmispon americanus S. W. Hutchinson -Jun-1925 539 Lassen Eagle Lake region 1554 Comment
  CHSC29909  Acmispon americanus var. americanus Robin L. Ondricek 1978-7-15 99 Lassen East side of Lower Dry Lake. 1645 Comment
  SBBG109301  Acmispon nevadensis var. nevadensis C. B. Hardham 1961-6-16 7454 Lassen Gold Run Crk, S of Susanville Comment
  CHSC117280  Acroptilon repens Lowell Ahart; John Dittes 2016-7-15 21229 Lassen East side of road, where the fence is near the canal, about 200 yards southwest of where the levee road crosses Big Valley Cana, in Big Valleym about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1264 Comment
  UC1220355  Adonis aestivalis J. R. Sweeney 1962-6-5 2653 Lassen 1/2 mi n ow Willow Creek Guard Station (16 mi n of Susanville on State Highway 139, 54 mi s of Adin); State Highway 139 1219 Comment
  CAS-BOT-BC110716  Aegilops cylindrica R. E. Frenkel 1964-7-12 652 Lassen On California Highway 299, 1.5 mile west of Bieber. 1249 Comment
  UCD51460  Aegilops cylindrica Andy Babcock 1981-6-10 s.n. Lassen Comment
  JEPS76087  Agastache parvifolia Gary Laver 1977-8-11 Lassen nw side Crater Mt. (Eagle Lake District); Lassen National Forest, , Eagle Lake District 1719 Comment
  SEINET10814664  Agastache parvifolia Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44. 1971 Comment
  SEINET11261376  Agastache parvifolia Mary Merello, H. H. Schmidt; L. Woodruff 1993-6-28 746 Lassen Poison Lake. Along Hwy 44 just south of the Hwy 89, Hyw 44 instersection.; 0 1700 Comment
  UC1609441  Agastache parvifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5619 Lassen e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering a drying branch of Pine Creek); ne end of Little Harvey Valley, Pine Creek 1737 Comment
  UC882898  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen 39 mi n Susanville; Grasshopper Valley 1524 Comment
  CDA40751  Agastache parvifolia T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20381 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  UC1537574  Agastache urticifolia Gordon H. True Jr. 1936-6-27 564 Lassen n slope Hot Spring Mountain; n slope of Hot Spring Mountain 1828 Comment
  CHSC23487  Ageratina occidentalis Wayne O. Baum 1971-7-22 71 -59 Lassen E slope of Gallatin Peak. 2072 Comment
  JEPS18703  Ageratina occidentalis Brown and Wieslander 1922-7-23 62 Lassen Martin Springs Eagle Lake, Martin Springs Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long Valley Comment
  CHSC7649  Agoseris aurantiaca Beverly J. Wise 1969-5-18 10 Lassen Alongside Susan River. 1615 Comment
  CHSC71219  Agoseris glauca var. laciniata Vernon H. Oswald; Lowell Ahart 1998-6-4 9142 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  CHSC91310  Agoseris heterophylla Lowell Ahart; John Dittes 2005-6-1 11885 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction. 1438 Comment
  SEINET6738695 Image available Agoseris heterophylla M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 80- 19 -1 Lassen Smoke Creek Rd., 0.1 mile E of Hwy 395 1372 Comment
  CHSC36467  Agoseris retrorsa Jeffrey R. Peek 1982-6-3 28 Lassen Ca. .6 mi W jct forest service rds 5.16 and 5.17, ca. 10 yd E 5.16 heading over Black Mtn. Comment
  UC1562323  Agropyron cristatum Vernon H. Oswald and Lowell Ahart 1990-7-25 4396 Lassen 2.2 mi w of Highway 395 (intersection of Hwy 70 and Scott Road) 1463 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
  UCR7835  Agropyron cristatum Marilyn Malin 1968-6-21 247 Lassen Brockman Flats Lava Bed,W side of Eagle Lake, site of 1956 Merrill burn 1600 Comment
  SEINET10789617  Agropyron cristatum John Thomas Howell 1961-9-25 Howell 36970 Lassen East side of Beckwourth Pass. Sierra Nevada. 1554 Comment
  UCD51692  Agropyron saundersii L. Whitney 1935-7-31 3588 Lassen Squaw Valley, 13 miles west of north end of Eagle Lake. Comment
  UCR152278  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  SEINET12950845  Agrositanion saundersii B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11518 Lassen Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat.; 41.08261 -120.34968 1692 Comment
  UC60210  Agrostis J. Burtt Davy Jun 17 1897-Jun 24 1897 3303 Lassen Honey Lake Valley Comment
  UC1100103  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen 4 mi n Madeline Comment
  UC589901  Agrostis exarata H. S. Yates 1936-8-11 6067 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  UCD52115  Agrostis exarata R. Tofsrud 1947-7-1 240 Lassen Between Bieber and Nubieber. Comment
  CAS-BOT-BC139680  Agrostis gigantea Clare B. Hardham 1969-8-28 17427 Lassen Sierra Nevada. West of Janesville. Comment
  CAS-BOT-BC139292  Agrostis idahoensis G. Schoolcraft 1994-8-1 2383 Lassen About 2 miles west of Boot Lake. 2255 Comment
  CAS-BOT-BC139297  Agrostis idahoensis John Thomas Howell 1973-7-10 49767 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  UC725737  Agrostis idahoensis A. A. Heller 1942-9-7 16534 Lassen edge Echo Lake; edge Echo Lake Comment
  UC1024638  Agrostis pallens Leo Whitney 1934-7-10 2225 Lassen meadow near Harvey Spring (ca 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  SEINET4341134  Agrostis pallens G. Schoolcraft 1994-7-6 2349 Lassen About 1.5 miles NE of Red Rock Lake 2042 Comment
  CAS-BOT-BC138801  Agrostis scabra John Thomas Howell 1959-9-23 34882 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  CAS-BOT-BC138803  Agrostis scabra John Thomas Howell; Gordon H. True 1973-8-1 50178 Lassen Sierra Nevada. Gold Run Creek Road south of Susanville, Diamond Range. 1584 Comment
  UC1024796  Agrostis scabra Leo Whitney 1933-8-4 2228 Lassen ca 10 mi nw Eagle Lake, n end; Lassen National Forest, Sheepshead 1889 Comment
  CAS-BOT-BC138626  Agrostis stolonifera G. Schoolcraft 1999-9-8 2884 Lassen Along Susan River west of Susanville. 1341 Comment
  POM75042  Aliciella lottiae Marcus E. Jones 1897-6-22 9875 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  RSA0066567  Aliciella triodon Marcus E. Jones 1897-6-25 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC978578  Alisma gramineum Verne Grant and Irving Schneider 1947-7-31 8204 Lassen irrigation ditch ne quarter George Williams section 19; Madeline Plain Comment
  UC55670  Alisma plantago-aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3337 Lassen Susan River Honey Lake Valley 1219 Comment
  UC985649  Alisma plantago-aquatica Verne Grant and Irving Schneider 1947-9-6 8394 Lassen near Wendel (w of Fleming Ranch Headquarters) Comment
  CHSC111099  Alisma triviale Lowell Ahart; John Dittes 2012-7-9 18294 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117273  Alisma triviale Lowell Ahart; John Dittes 2016-7-15 21221 Lassen About 50 yards west of the road and about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS127168  Alisma triviale Lowell Ahart, John Dittes 2016-7-15 21221 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET222604 Image available Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Hwy 395, 3 mi. S of Ravendale. Comment
  SEINET3883805  Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Highway 395, 3.0 miles south of Ravendale.; 0 Comment
  RSA487942  Allium atrorubens var. atrorubens A. Tiehm, J. Nachlinger 1988-6-2 11702 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
  UC1567422  Allium atrorubens var. atrorubens G. Schoolcraft 1989-5-31 1888 Lassen slopes of Skedaddle Creek n Wendel Rd.; Skedaddle Creek 1402 Comment
  CAS-BOT-BC459452  Allium bisceptrum David D. Keck; J. Clausen 1935-6-25 3767 Lassen 2 miles W of Westwood on road to Chester at county line. Comment
  CHSC30581  Allium campanulatum Sori H. Shad 1970-7-25 48 Lassen Found on the way to Papoose Valley, about 9 miles south of E. L. B. S. 1653 Comment
  SEINET3884275  Allium campanulatum Mary Merello, H. H. Schimdt; L. Woodruff 1993-6-27 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94.; 0 1700 Comment
  UC1229822  Allium lemmonii Gus Hormay 1961-6-15 Lassen experimental forest ot Patterson Flat Patterson Flat Comment
  SEINET3885788  Allium lemmonii D. W. McNeal 1978-5-30 2129 Lassen Beside Highway #395, 1.9 mi. South of Ravendale.; 0 Comment
  UC584334  Allium parvum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2274 Lassen on bare summit ridge and ridges sw Diamond Mt. (s of Susanville) Comment
  CAS-BOT-BC474046  Allium parvum Louella Bass s.n. Lassen Elysian Valley Comment
  NY526213  Alnus incana subsp. tenuifolia G. Schoolcraft 1982-8-18 887 Lassen Along Doyle Grade Road, west of Doyle 1554.5 Comment
  CDA42956  Alopecurus carolinianus L. Ahart, John Dittes, Todd Sloat 2013-6-8 18731 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC112469  Alopecurus carolinianus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18731 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS118454  Alopecurus geniculatus Lowell Ahart, John Dittes 2011-6-20 17504 Lassen In the small stream, about 80 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
  CHSC107996  Alyssum minus subsp. micranthum Lowell Ahart; John Dittes 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC67190  Alyssum minus subsp. micranthum James D. Jokerst 1991-5-28 3293 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, ca. 400 ft E of the highway on slopes above road, S of a small canyon mouth. 1554 Comment
  CHSC71228  Alyssum minus subsp. micranthum Vernon H. Oswald; Lowell Ahart 1998-6-4 9144 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. At the parking area at the end of the spur road. 1389 Comment
  RSA0056301  Alyssum minus var. micranthum Lowell Ahart 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC5065  Amaranthus albus D. L. Stites 1967-7-1 143 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  HSC31339  Amaranthus blitoides D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19304 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  CHSC116090  Amaranthus californicus Lowell Ahart; John Dittes 2015-7-13 20317 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC71844  Amaranthus powellii Vernon Oswald; Lowell Ahart 1998-9-8 9570 Lassen Hwy 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  CHSC65288  Ambrosia acanthicarpa Vernon Oswald; Lowell Ahart 1995-8-14 7191 Lassen Modoc Plateau. Horse Lake Rd. (Lasen536) 1.8 mi W of Hwy. 395, N of Susanville. 1645 Comment
  UC1118423  Ambrosia acanthicarpa C. W. Hanks 1934-9-25 86 Lassen floor of, (near Plumas National Forest) Long Valley; Sierraville Quad., Plumas National Forest 1371 Comment
  CAS-BOT-BC142908  Amelanchier A. A. Heller 1938-6-4 15144 Lassen On the bank of a small stream in the pine forest a mile east of Fredonyer Pass on Highway #36. 1706 Comment
  CHSC29918  Amelanchier alnifolia var. pumila Robin L. Ondricek 1978-5-25 26 Lassen .5 mi S of tunnel crossing on road to Eagle Lake Field Station. 1554 Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 Comment
  RSA166673  Amelanchier pallida Alfred Richardson 1961-5-30 8 Lassen S of Eagle Lake. 1402 Comment
  POM91172  Amelanchier pallida Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC142537  Amelanchier utahensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49160 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  CHSC60784  Amphiscirpus nevadensis Vernon H. Oswald; Lowell Ahart 1993-6-14 5521 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). Shallow depressions among low dunes on the upper beach between the road and the lake. 1566 Comment
  CDA40471  Amsinckia menziesii T. C. Fuller 1963-6-1 10618 Lassen West side of road to Susanville, 2.0 miles south of Pittville. 0 Comment
  CHSC7718  Amsinckia menziesii var. menziesii Beverly J. Wise 1969-4-28 1 Lassen 2.4 mi. north of Susanville on Hwy 139 at the junction of Rnd Valley Rd. Comment
  CHSC106685  Amsinckia tessellata B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UC1061762  Amsinckia tessellata var. tessellata E. Sawyer 1935-6-27 236 Lassen Long Valley 1310 Comment
  CHSC27616  Ancistrocarphus filagineus Robert A. Schlising 1978-6-8 3287 Lassen E of Eagle Lake and N of Murrers Upper Meadow. 1536 Comment
  UC424647  Anemone occidentalis R. H. Finch Aug. 1930 Lassen <Mineral ?> Comment
  CHSC8561  Anemone oregana K. Stern 1967-7-1 Lassen Vic. Silver Lake. Comment
  JEPS94117  Anisocoma acaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9134 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  CAS-BOT-BC64112  Anisocoma acaulis G. Schoolcraft 1997-5-7 2586 Lassen Port Sage Mtns. n. of Indian Spring 1584 Comment
  CAS-BOT-BC63952  Antennaria argentea H. D. Ripley; R. C. Barneby 1944-5-29 5958 Lassen Susanville Comment
  CAS-BOT-BC59216  Antennaria dimorpha John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49200 Lassen Elysian Valley northwest of Janesville 1325 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
  CHSC68729  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1997-5-27 8505 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
  UC1137751  Antennaria dimorpha L. R. Short 1936-6-8 S- 386 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1743 Comment
  UC180151  Antennaria dimorpha unknown 1892-6-24 Lassen Honey Lake Comment
  CAS-BOT-BC59218  Antennaria dimorpha Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake 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
  CHSC28406  Antennaria geyeri Wayne O. Baum 1971-7-12 71 -54 Lassen E. slope of Gallatain Peak. 1950 Comment
  RSA416688  Antennaria geyeri Christopher Davidson 1974-7-24 2487 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  CAS-BOT-BC58694  Antennaria luzuloides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16360 Lassen Near NE end of Eagle Lake 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
  POM253190  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen About 3 miles south of Westwood on hiway 36. A tongue of Upper Sonoran extends into the Arid transition Life Zone here. Comment
  CAS-BOT-BC77291  Antennaria microphylla Mrs. Marian L. Campbell 1916-7-12 s.n. Lassen Mt. Peterson Comment
  CAS-BOT-BC26645  Antennaria pyramidata Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC112470  Apera interrupta Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18733 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
  CHSC99146  Apera interrupta Lowell Ahart; John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS127243  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 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC1123490  Apocynum androsaemifolium A. Simontacchi 1940-8-5 930 Lassen 4.2 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  POM75751  Apocynum pumilum var. rhomboideum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC1143029  Arabis glabra L. R. Short and Wm. Gansberg 1936-7-10 S- 422 Lassen Burgess Spring Experimental Range Lassen National Forest 1850 Comment
  NY112363  Arabis hirsuta G. Schoolcraft 1985-7-23 1479 Lassen 1.5 miles NW of Coon Camp Springs 35-10-23. 1798.3 Comment
  CHSC29891  Arabis holboellii var. retrofracta Robin L. Ondricek 1978-5-25 29 Lassen .4 mi N of Lake Forest Development on Co. Rd. A1. 1828 Comment
  CDA6787  Arctium minus T. C. Fuller 1959-7-7 4725 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  CAS-BOT-BC45899  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  UC21853  Arctostaphylos nevadensis M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  CAS-BOT-BC42165  Arctostaphylos patula subsp. patula Ida M. Gifford 1933-12-27 s.n. Lassen Near Susanville 1310 Comment
  SEINET530729  Arenaria congesta var. lithophila Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  RSA313571  Arenaria congesta var. simulans J. R. Shevock 1972-5-20 1816 Lassen Along Hwy 395; near Ravendale. 1372 Comment
  JEPS94520  Arenaria congesta var. subcongesta Vernon H. Oswald and Lowell Ahart 1997-5-27 8485 Lassen e side of Highway 139 at a small farm pond 38.2 mi n of Susanville (7.4 mi n of Eagle Lake Road); Highway 139 1627 Comment
  UC1299621  Arenaria congesta var. subcongesta Freed W. Hoffman 1946-6-8 911 Lassen Dry Creek, Highway 395 Comment
  UC1537301  Arenaria congesta var. suffrutescens Gordon H. True Jr. 1936-6-27 561 Lassen Top of Hot Spring Mountain Hot Spring Mountain 1981 Comment
  UC584297  Arenaria congesta var. suffrutescens G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2206 Lassen just w of the town on Inspiration Point; Susanville 1280 Comment
  JEPS94556  Arenaria kingii var. glabrescens Vernon Oswald and Lowell Ahart 1997-6-24 8633 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
  SD8175  Arenaria kingii var. glabrescens Mrs. R. M. Austin 1879-1 Lassen Spanish Peak. 1980 Comment
  SEINET12090189  Argemone munita Unknown 1977-1 14 Lassen ca .5 mi S of Highway 395, 2 mi W of Milford at Honey Lake Campground, Sec. 16, T27N, R13E 1268 Comment
  RSA0011559  Arnica R. F. Thorne, Larry E. DeBuhr 1975-8-22 46993 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  JEPS35887  Arnica chamissonis Brown and Wieslander 1922-7-30 26 Lassen Martin Springs , Eagle Lake Comment
  SD113191  Arnica chamissonis Darley F. Howe 1964-8-2 3921 Lassen East Creek, Warner Mountains, Modoc National Forest 2010 Comment
  UC1533139  Arnica chamissonis Gary Schoolcraft 1986-8-19 1667 Lassen Said Valley Res. 1630 Comment
  UC584281  Arnica chamissonis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-13 2343 Lassen Cleghorn Reservoir 1828 Comment
  UC73900  Arnica chamissonis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  UC2027205  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen National Forest. About 1/2 mile WNW of Griffith Hill, ca 30 ft N of 30N21. Swain Mountain quadrangle Comment
  CHSC66714  Arnica discoidea Vernon H. Oswald; Lowell Ahart 1996-8-1 8128 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  CHSC60812  Arnica fulgens Vernon H. Oswald; Lowell Ahart 1993-6-28 5580 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  UC1609098  Arnica fulgens Vernon H. Oswald and Lowell Ahart 1993-6-28 5580 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  CHSC89756  Arnica mollis L. P. Janeway 2004-6-26 8166 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UC1609362  Arnica sororia Vernon H. Oswald and Lowell Ahart 1993-7-8 5668 Lassen Halls Flat Rd (33N18) 0.4 mi sw Pittville Rd. (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, between road and open meadow to w) 1706 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
  CAS-BOT-BC85004  Artemisia arbuscula subsp. arbuscula John Thomas Howell 1934-7-6 12455 Lassen Harvey Valley Comment
  CHSC77184  Artemisia arbuscula subsp. thermopola G. Schoolcraft 1997-8-6 2659 Lassen Diamond Mtn. 2316 Comment
  UC1119577  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 948 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC747153  Artemisia cana subsp. bolanderi G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  CAS-BOT-BC90331  Artemisia douglasiana John Thomas Howell 1975-7-23 51390 Lassen Susanville 1295 Comment
  SD132272  Artemisia douglasiana G. Helmkamp 1990-9-23 E 15 Lassen 20 miles north of Litchfield along U. S. Hwy 395. 1435 Comment
  UC1037293  Artemisia douglasiana Leo Whitney 1934-9-5 1664 Lassen dry wash near Fredonyer Pass; Lassen National Forest 1584 Comment
  CAS-BOT-BC93741  Artemisia ludoviciana subsp. incompta Clare B. Hardham 1969-8-28 17463 Lassen Sierra Nevada - slope west of Janesville Comment
  JEPS37008  Artemisia ludoviciana subsp. incompta W. L. Jepson 1918-8-4 7809 Lassen Horse Lake 1554 Comment
  CAS-BOT-BC90778  Artemisia ludoviciana subsp. ludoviciana Louella Bass 1980-5-1 s.n. Lassen Standish, Honey Lake Valley Comment
  SEINET7153386 Image available Artemisia nova A. Tiehm, G. Schoolcraft 2003-1 14368 Lassen 2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  CAS-BOT-BC97200  Artemisia spinescens Elmer I. Applegate 1934-5-4 8934 Lassen 20 miles south of Ravendale, Secret Valley Comment
  CHSC110309  Artemisia tridentata subsp. tridentata L. P. Janeway; B. Castro 2012-7-2 10927 Lassen Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road. 1473 Comment
  JEPS37010  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7819 Lassen Madelin Plains 1615 Comment
  RSA0092309  Artemisia tridentata subsp. tridentata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31432 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  SEINET195656  Artemisia tridentata subsp. tridentata G. Thomas Robbins 1945-10-18 2157 Lassen Lassen National Forest; Harvey Valley 1676 Comment
  CAS-BOT-BC99280  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1988-8-24 1855 Lassen Ash Valley RNA/ACEC 16 mi. east of Adin 1554 Comment
  SEINET955514  Asclepias cordifolia Helen K. Sharsmith 1955-1 4514 Lassen Lassen National Forest. In forest adjacent to State Highway 299 near Fall River Mills. 1219 Comment
  CHSC105766  Asclepias fascicularis Nick Otting 2005-7-28 Lassen Five Springs Creek, downstream from Five Springs. 1356 Comment
  CHSC5039  Asclepias fascicularis L. B. Barlow 1967-7-11 129 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  UC1136827  Asclepias speciosa George A. Fisher, Irwin H. Johnson 1933-7-29 F Lassen Stringer Lassen National Forest 1694 Comment
  JEPS124872 Image available Asclepias speciosa Lynne C. Carter 1967-7-11 81 Lassen 1.1 mi. South of Millford on Hwy 395. West of Honey Lake. 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
  CDA10316  Aster lanceolatus subsp. hesperius O. W. Newman Aug 1915 Lassen Susanville. Comment
  CHSC4429  Astragalus K. R. Stern 1967-6-30 2453 Lassen West Central side of Eagle Lake. 1554 Comment
  RSA0027352  Astragalus John F. Emmel 1994-7-17 1327 Lassen Summit area of Observation Peak. 2378 Comment
  RSA0006691  Astragalus accidens var. hendersonii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 108749 Lassen South of Constantia. 1463 Comment
  NY790906  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles northwest of Termo 1615.4 Comment
  POM45143  Astragalus andersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  NY791374  Astragalus andersonii LeDoux 1973-5-24 861 Lassen Collected at jct. of Highways 70 and 395 at Arco Station. Comment
  SEINET10544285 Image available Astragalus anxius R. J. Meinke 1991-7-16 Meinke 6108 Lassen Ash Valley, ca. 25 km W of Madeline, along Ash Valley Rd.; on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sec. 5. In loose, gravelly ash thinly overlying volcanic bedrock. 1550 Comment
  NY797392  Astragalus canadensis var. brevidens R. R. Halse 1991-7-28 4247 Lassen Along State Highway 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville 1558 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
  RSA0028049  Astragalus curvicarpus John F. Emmel 1996-7-14 1423 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  HSC82216  Astragalus filipes Thomas W. Nelson, Jane P. Nelson 1980-7-6 6001 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  NY658483  Astragalus filipes G. Schoolcraft 1982-6-22 747 Lassen Ft. Sage Mtns. 1767.8 Comment
  NY658484  Astragalus filipes T. W. Nelson 1980-7-6 6001 Lassen Likely Quad. Along Adin-Madelin Rd. (Ash Valley road), 16 miles East of Adin in Ash Valley 1554.5 Comment
  SEINET10452220  Astragalus filipes Mary Susan Taylor 1982-5-29 Taylor 4569 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
  NY674273  Astragalus gibbsii G. Schoolcraft 1982-7-20 806 Lassen Wagner Canyon, east of McKesick Peak 1524 Comment
  RSA415413  Astragalus gibbsii Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1332123  Astragalus gibbsii Alice Eastwood and John Thomas Howell 1940-6-16 8336 Lassen near Susanville Comment
  CAS-BOT-BC186866  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1944-5-29 5951 Lassen Constantin 1371 Comment
  CAS-BOT-BC186915  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  RSA111018  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 4300 Lassen West of Susanville 1310 Comment
  CAS-BOT-BC229045  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC187154  Astragalus lentiginosus var. chartaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49230 Lassen On Highway 395, 7 miles southeast of Milford 1280 Comment
  UC13403  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  RSA112071  Astragalus lentiginosus var. salinus H. D. Ripley, R. C. Barneby 1943-6-13 5678 Lassen N. of Doyle 1265 Comment
  HSC63126  Astragalus malacus Teresa Prendusi 1980-4-28 1101 Lassen Rice Canyon 1341 Comment
  SEINET10486634  Astragalus malacus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2599 Lassen Hallalujah jct intersection of us hwy 395 & calif hwy 70; in open waste area Adjacent to artemisia tridentata community. 1433 Comment
  CAS-BOT-BC192855  Astragalus pulsiferae var. pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen East slope of Shaffer Mtn. Comment
  NY694132  Astragalus pulsiferae var. pulsiferae M. J. Williams 1973-7-26 74-L- 16 Lassen 2 miles west of Highway 395, near Highway 70 1494 Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  SEINET5324574  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 -L-16 Lassen Burn area, W of Hwy 395 and Near Hwy 70. 1494 Comment
  HSC36246  Astragalus purshii John Rehling 1975-5-15 78 Lassen Along Hwy. 395 just before the turnoff to Janesville Comment
  SEINET10841190  Astragalus purshii Mary Susan Taylor 1974-5-4 Taylor 224 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
  RSA715542  Astragalus purshii var. purshii L. Ahart 2005-6-1 11870 Lassen About 1/2 miles west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70., 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  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
  POM45166  Astragalus purshii var. tinctus T. S. Brandegee 1892-6-23 s.n. Lassen Honey Lake Comment
  UC604677  Astragalus purshii var. tinctus Farris Farris 1935-5-20 Lassen three mi sw Susanville; sw of Susanville 1310 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
  POM25988  Astragalus whitneyi Marcus E. Jones 1897-6-28 s.n Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CAS-BOT-BC200875  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 7 miles below Eagle Lake 1524 Comment
  SEINET3025898  Astragalus whitneyi var. sonneanus Marcus E. Jones 1897-6-28 Lassen Top of Diamond Peak, Susanville. Perkin's Ranch. 2230 Comment
  CAS-BOT-BC198724  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  CHSC29871  Astragalus whitneyi var. whitneyi Robin L. Ondricek 1978-7-22 106 Lassen One mi s of Colley Point Overlook on Hwy 139. 1670 Comment
  UC1730231  Astragalus whitneyi var. whitneyi L. P. Janeway 1998-7-8 5722 Lassen ridgetop saddle 2.4 mi NW of Red Rock (along road 213, 0.1 mi E of jct of Roads 28N08, 29N10, 213, and 28N55); ; Ridgetop saddle about 2.4 mi northwest of Red Rock; along Road 213, 0.1 mi east of the junction of Roads 28N08, 29N10, 213, and 28N55. 1988 Comment
  CHSC71080  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1998-5-22 9130 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
  JEPS94136  Athysanus pusillus Vernon H. Oswald and Lowell Ahart 1998-5-22 9130 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
  JEPS94838  Atriplex gmelinii var. gmelinii Vernon H. Oswald and Lowell Ahart 1998-9-8 9581 Lassen 2.2 mi n of Bieber (on County Road 91 (Bieber-Lookout Road)); Ash Creek and Big Swamp, County Road 91 1258 Comment
  RSA518558  Atriplex rosea George K. Helmkamp 1990-9-23 H- 7 Lassen N of Ravendale 1677 Comment
  CHSC76274  Atriplex triangularis Lowell Ahart; Vernon Oswald 1999-9-13 8209 Lassen On the edge of a flooded field just south of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UCR183190  Balsamorhiza deltoidea Jim Andre, G. L. Clifton 1993-5-28 7711 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  SEINET11839299  Balsamorhiza hirsuta N. H. Holmgren, Holmgren, P. K. 1978-1 8935 Lassen upper Smoke Creek, just S of Observation Peak, 17 km air ESE of Ravendale 1770 Comment
  UCD129522  Balsamorhiza hirsuta G. Schoolcraft 2000-4-26 2891 Lassen Susanville, 1.8 miles west of Hwy 395 on Shaffer Mountain Road. 1554 Comment
  CAS-BOT-BC106494  Balsamorhiza hookeri Clarence Quick 1963-7-12 63 -38 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  SEINET10617201  Balsamorhiza hookeri Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 476 Lassen Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  SEINET10859166  Balsamorhiza hookeri David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17769 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  HSC26602  Barbarea orthoceras D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19166 Lassen 3 mi. N of Westwood Comment
  CHSC99983  Bassia hyssopifolia L. P. Janeway 2008-8-2 9525 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  RSA79262  Bassia hyssopifolia E. K. Balls 1952-10-10 18137 Lassen 0.7 miles E of Standish, Hwy 395, between Susanville and Alturas. 1250 Comment
  CHSC99275  Beckmannia syzigachne Lowell Ahart; John Dittes 2008-6-20 14946 Lassen In swales, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC790979  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen lower slopes of peak 6 mi s Ravendale; Observation Peak Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  UC1583951  Berberis aquifolium G. Schoolcraft 1990-5-15 2048 Lassen ca 4 mi s Nubieber (John's Valley area) 1310 Comment
  UCD54547  Bergia texana Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2731 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  UCR182957  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau, Anderson Ranch in southern part of county [c. 5.5 miles north of Hwy 70 on Scott Road] 1479 Comment
Read comments
May 25 2012
  NY526245  Betula glandulosa B. M. Bartholomew 1988-7-22 4500 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  CAS-BOT-BC127972  Blepharipappus scaber Ella Dales Cantelow 1941-5-22 3551 Lassen U. S. Hy 395 n. of Litchfield Comment
  CAS-BOT-BC128014  Blepharipappus scaber Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee 1219 Comment
  CAS-BOT-BC128048  Blepharipappus scaber A. M. Vollmer; L. Beane 1953-7-1 99 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  SFV3785  Blepharipappus scaber I. L. Wiggins, D. B. Wiggins 1961-6-11 16355 Lassen East of Eagle Lake, 2 miles north of Susanville. Roadside. 1340 Comment
  SJSU4600  Blepharipappus scaber J. W. Tilden 1958-6-27 1287 Lassen Madeline Comment
  UC1136967  Blepharipappus scaber L. R. Short 1936-6-10 S- 415 Lassen Burgess Spr. Exp. Range 1798 Comment
  HSC42530  Blepharipappus scaber Barbara Kelly 1977-8-9 566 Lassen 14.3 mi. E of Madeline on the dirt road from Adin Comment
  SEINET10912069  Blepharipappus scaber David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17767 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  SEINET10945354  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2584 Lassen 6 mi. S of Adin; along CA Hwy. 139 right-of-way; in basalt-clay, grassy road bank; Artemisia-Juniper assoc. 1372 Comment
  UCD129605  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  SEINET7379359 Image available Blepharipappus scaber subsp. scaber J. A. Young 1982-6-9 s.n. Lassen Myers Ranch, Adin 1372 Comment
  CAS-BOT-BC13905  Boechera lemmonii Eben McMillan 1968-6-28 140 -2 Lassen South slope of Mount Lassen. Comment
  CAS-BOT-BC14088  Boechera pauciflora John Thomas Howell 1974-7-9 50484 Lassen Between Susanville and southwest end of Eagle Lake. 1828 Comment
  CAS-BOT-BC14092  Boechera pauciflora John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50687 Lassen Sierra Nevada. South and southeast of Diamond Mountain. 2286 Comment
  CHSC29878  Boechera pinetorum Robin Ondricek 1978-6-6 39 Lassen Along Co. Rd. 201, 2.8 mi W of jct. with Co. Rd. A1. 1569 Comment
  CHSC68852  Boechera pinetorum Vernon Oswald; Lowell Ahart 1997-6-24 8622 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. On a roadcut. 2164 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
  SEINET5325194  Boechera rectissima R. C. Rollins, Kathryn W. Rollins 1981-5-31 81172 Lassen 2.2. mi N of junction of County Hwy. A-1 and California Hwy. 36 Comment
  CAS-BOT-BC14711  Boechera repanda John Thomas Howell; Gordon H. True 1973-7-31 50062 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CHSC91294  Boechera retrofracta Lowell Ahart; John Dittes 2005-6-2 11926 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  RSA0090999  Boechera retrofracta Dean Wm. Taylor 2009-5-21 20602 Lassen Susanville; Susanville Peak, easterly flank along logging road trending northward from Susanville Indian Rancheria. 1600 Comment
  SEINET12627116 Image available Boechera retrofracta Martin Schilling 2013-1 MS 257 Lassen Hat Creek overlook area, off Hwy 44, 2.86 air mi E of Sugarloaf Peak, 5 air mi NE of Hat Creek Hill, on W-facing slope, between rocks 1500 Comment
  UC1553390  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 mi west of Madeline, CA. 1584 Comment
  CAS-BOT-BC25511  Boechera retrofracta Clarence Roy Quick 1961-6-21 61 -24 Lassen Black Mountain Experimental Forest northeast of Lassen Peak. Forest adjacent to Road 21. 1798 Comment
  JEPS111471  Boechera retrofracta B. A. Roy, J. W. Kirchner 1996-5-11 Lassen SE of Susanville, off highway 36. 9.8 miles up Gold Run Road (follow Richmond Rd. (E) to Gold Run Road (E) on side of Diamond Mtn. Comment
  CAS-BOT-BC25705  Boechera sparsiflora John Thomas Howell; Gordon H. True 1973-7-31 50064 Lassen Sierra Nevada. Diamond Range. Road from Janesville to Thompson Peak. 1783 Comment
  CHSC29913  Boechera sparsiflora Robin L. Ondricek 1978-5-25 27 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  SD8418  Boykinia major Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  SD197665  Brickellia microphylla G. K. Helmkamp 1990-9-23 B 15 Lassen Modoc Plateau: Susanville. 1189 Comment
  CHSC92737  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  HSC82193  Brodiaea coronaria subsp. coronaria Thomas W. Nelson, Jane P. Nelson 1980-7-6 6047 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  SEINET201569  Brodiaea coronaria subsp. coronaria Arthur Cronquist 1959-6-18 8485 Lassen 5 miles south of Adin Comment
  SEINET222548 Image available Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8909 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak 28 km east of Ravendale and 22.5 km airlin 1680 Comment
  SEINET8506610  Bromus briziformis D. W. Taylor 2005-6-29 19380 Lassen Piute Creek, 3 miles West from western edge, Susanville 1311 Comment
  CAS-BOT-BC149580  Bromus carinatus var. carinatus William Bridge Cooke 1938-6-24 11062 Lassen Mount Shasta. MacBride Spring. 1524 Comment
  CAS-BOT-BC149581  Bromus carinatus var. carinatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49457 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC149582  Bromus carinatus var. carinatus Clare B. Hardham 1971-8-22 18403 A Lassen Sierra Nevada. Diamond Mountain. Comment
  CAS-BOT-BC149583  Bromus carinatus var. carinatus Parkison 1916-6-21 42 Lassen Near Patterson. 1706 Comment
  CHSC34410  Bromus carinatus var. marginatus Terrence Finn 1979-6-14 1 Lassen 0.75 mi. sw of Hallelujah Junction. 1524 Comment
  UCD59087  Bromus carinatus var. marginatus L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Lassen Forest. 1828 Comment
  UCD59104  Bromus carinatus var. marginatus A. A. Beetle 1941-6-28 2802 Lassen 10 miles W of Chester. 1524 Comment
  UCD59149  Bromus carinatus var. marginatus H. P. Hagge 1929-9-16 s.n. Lassen Logan Mtn. 1828 Comment
  CAS-BOT-BC155940  Bromus commutatus G. Schoolcraft 1986-6-17 1624 Lassen North side of Tuledad Canyon near Nevada state line. 1554 Comment
  CAS-BOT-BC155941  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC155942  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  CHSC75564  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1999-6-9 9750 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Along a drainage below the dam of the reservoir. 1353 Comment
  POM264546  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  UCD58445  Bromus commutatus R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. 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
  OBI82789  Bromus japonicus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3923 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  CAS-BOT-BC162178  Bromus orcuttianus John Thomas Howell 1934-7-10 12554 Lassen Black's Mountain. Comment
  UC1037142  Bromus orcuttianus Leo Whitney 1935-6-25 3338 Lassen Ashurst Mountain Comment
  NY664614  Bromus tectorum See comments 1935-6-15 Lassen Susanville 1310.6 Comment
  RSA715626  Bromus tectorum L. Ahart, John Dittes 2005-6-1 11909 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  UC1024872  Bromus tectorum Leo Whitney 1935-5-26 3155 Lassen 10 mi e of Adin (Ash Creek); Ash Creek Comment
Read comments
Jun 24 2009
  UC1131326  Bromus tectorum A. Simontacchi 1940-6-8 835 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  UC773967  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S 409 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  UCD59875  Bromus tectorum R. N. Raynor 1940-4-16 s.n. Lassen Round Valley. Comment
  SEINET10515057  Bromus tectorum Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3117 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UCD57776  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Lassen National Forest. Westwood Junction. 1737 Comment
  UCD57782  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles W of Chester. 1524 Comment
  UCD169625  Callitriche palustris 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. 1615 Comment
  JEPS124785 Image available Callitriche palustris M. L. Wheelis 1964-7-1 136 Lassen Loc. bridges between Bieber and New Bieber. Comment
  UCD149989  Callitriche palustris William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  SEINET3828391  Callitriche verna R. F. Thorne, Larry E. De Buhr 1975-1 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC332740  Callitriche verna R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  CHSC12426  Calocedrus decurrens Anne Linda Brisk 1969-6-20 12 Lassen 5.5 mi S of ELBS on Road 5.16.2. 1920 Comment
  CHSC71  Calocedrus decurrens K. McKenzie 1928-4-10 Lassen Big Valley Mountain. 914 Comment
  SEINET11051598  Calocedrus decurrens D. Charlet 1996-7-8 2289 Lassen Sierra NV, Diamond Mountains, East Canyon, Milford Grade, Laufman Campground. 1620 Comment
  UC1523812  Calochortus leichtlinii Gary Schoolcraft 1983-7-19 1096 Lassen s slope Fredonyer Peak 2255 Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  CAS-BOT-BC487967  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen In the valley east of Fredonyer Pass, Comment
  CHSC27637  Calochortus macrocarpus J. D. Prouty 1978-7-26 27 Lassen Gorilla's Roost to Stone's Ranch Rd., SE of Eagle L. 1584 Comment
  CHSC27653  Calochortus macrocarpus Cindy Prouty 1978-7-26 9 Lassen Lower Dry L.; SE of Eagle L. 1645 Comment
  CHSC6271  Calochortus macrocarpus A. Santos 1946-7-5 Lassen East side of Eagle Lake. 1615 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
  UC1136686  Calyptridium monospermum A. Simontacchi 1940-6-17 941 Lassen 2.3 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1798 Comment
  CHSC6233  Calyptridium umbellatum L. Harman 1946-6-23 Lassen Roop mountain. 2133 Comment
  CHSC67062  Calyptridium umbellatum Willis Ball 1969-6-20 16 Lassen Found beside road on Dean's Ridge. 1950 Comment
  SEINET196249  Calyptridium umbellatum F. Farris 1936-6-15 Lassen Eagle Lake Rd 1676 Comment
  UC1123631  Calystegia occidentalis subsp. occidentalis A. Simontacchi 1940-6-30 901 Lassen 2.6 mi s Ladder Butte; Halls Flat, Lassen National Forest, Ladder Butte Comment
  SEINET230279  Calystegia polymorpha Noel H. Holmgren, Patricia K. Holmgren 1980-7-9 9581 Lassen Surprise Valley 23.7 km south of Fort Bidwell 1400 Comment
  CHSC60789  Camassia quamash subsp. breviflora Vernon H. Oswald; Lowell Ahart 1993-6-3 5475 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. 1731 Comment
  HSC15434  Camassia quamash subsp. breviflora H. E. Parks, S. T. Parks Jun 1928 220 Lassen Lassen National Park, Drakesbad 1768 Comment
  UC726042  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 mi e of Westwood 1493 Comment
  NY850975  Camissonia boothii subsp. alyssoides Mrs. C. C. Bruce 06 1898 2139 Lassen Shumway Comment
  POM38501  Camissonia claviformis subsp. cruciformis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 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
  CHSC93568  Camissonia contorta Lowell Ahart; John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  UCD55153  Camissonia contorta Ellen Dean 2006-5-15 3041 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  HSC68913  Camissonia minor Gary Schoolcraft 1980-6-11 265 Lassen W of Wendel 1220 Comment
  CHSC71092  Camissonia pubens Vernon H. Oswald; Lowell Ahart 1998-5-22 9136 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. Roadside banks. 1341 Comment
  RSA12158  Camissonia tanacetifolia subsp. quadriperforata Wayne E. Sawyer 1935-6-27 219 Lassen Long Valley. 1311 Comment
  CAS-BOT-BC160868  Camissonia tanacetifolia subsp. tanacetifolia M. S. Baker; Frank Nutting 1894-8-21 s.n. Lassen Near Eagle Lake 1524 Comment
  CAS-BOT-BC160879  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell; Gordon H. True 1973-8-1 50209 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2164 Comment
  RSA186587  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  CAS-BOT-BC37244  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49478 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC10331  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  CAS-BOT-BC18285  Carex John Thomas Howell 1975-7-23 51408 Lassen Sierra Nevada. Along Highway 395 between Johnstonville and Janesville. 1280 Comment
  CAS-BOT-BC18447  Carex abrupta George Wilson Gillett 1957-7-21 867 Lassen Lassen Volcanic National Park. Swale below (north of) summit of trail between Juniper Lake and Cameron Meadow. 2118 Comment
  JEPS28338  Carex angustata George W. Gillett 1957-7-22 883 Lassen campsite near s end of lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  SEINET13327167  Carex aquatilis var. aquatilis J. Atchley 1993-5-5 1 Lassen Along willow creek. 1219 Comment
  CHSC60428  Carex athrostachya Mary Ann Showers 1992-6-13 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC99511  Carex athrostachya Lowell Ahart; John Dittes 2008-6-20 14939 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
  UC1537643  Carex athrostachya Gordon H. True Jr. 1939-6-15 994 Lassen Bullard Lake, W of Grasshopper Valley Comment
  CHSC113778  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highwy 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  UC2031876  Carex densa Nick Otting and Bruce Newhouse 2003-7-17 703 Lassen Cascade Mountains, Susan River, 2 air miles west of Susanville. Comment
  CDA33057  Carex densa T. C. Fuller 1966-7-2 14963 Lassen South side of road to Pittsville, 5.4 miles west of Little Valley Post Office. Northwest part of county. 0 Comment
  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
  HSC48337  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen 2 mi. N of Westwood Comment
  HSC82188  Carex douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6037 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CDA33049  Carex douglasii T. C. Fuller 1963-7-15 10890 Lassen South side of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  UC1142952  Carex filifolia var. erostrata A. L. Hormay 1941-6-26 238 Lassen Bogard Ranger Station Lassen National Forest, Pine Creek 1706 Comment
  UCD37482  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Lassen National Forest, 6 miles north of Bogard Ranger Station, Harvey Valley. 1676 Comment
  CAS-BOT-BC20938  Carex heteroneura John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50698 Lassen South and southeast of Diamond Mountain. 2286 Comment
  UC2031887  Carex heteroneura Nick Otting 2003-7-15 684 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 miles south-southwest of Susanville. Comment
  CAS-BOT-BC28194  Carex hoodii George Wilson Gillett 1957-7-29 946 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  SEINET7561698 Image available Carex hoodii George W. Gillet 1957-7-29 946 Lassen Lassen Volcanic National Park, along trail between Snag Lake and Butte Lake. 1859 Comment
  JEPS120111  Carex integra Lowell Ahart, John Dittes 2012-7-9 18299 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC96442  Carex interior Gordon Leppig 1998-7-12 954 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95193  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 528 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS97331  Carex limosa Vernon H. Oswald 1995-8-26 7217 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  CAS-BOT-BC31947  Carex microptera John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50699 Lassen Steep rocky slope S and SE of Diamond Mt. 2286 Comment
  CHSC59187  Carex multicaulis Vernon H. Oswald; Lowell Ahart 1992-9-15 5217 Lassen Lassen Volcanic National Park. Ca. 0.3 mi SW of Island Lake, on the NW foot of Bonte Pk., ca. 1.5 mi E of Juniper Lake campgrounds. 2133 Comment
  CAS-BOT-BC32177  Carex multicostata Beecher Crampton 1964-6-26 7076 Lassen Ca 4 mi SSE Bogard Ranger Station, Lassen National Forest. Comment
  CHSC110970  Carex nebrascensis Lowell Ahart; John Dittes 2012-7-9 18298 Lassen Scattered along a small drainage, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northest of Bieber, Big Valley. 1267 Comment
  HSC95265  Carex nebrascensis Gordon Leppig 1998-8-17 1053 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS114853  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-22 15019 Lassen N side of levee, about 90 yds E of the tall poles, in Big Valley, about 3.5 mi NE of the Headquarters at Ash Creek State Wildlife Area, about 5.5 mi (air) NE of Bieber 1260 Comment
  UC1133502  Carex nebrascensis Robert W. Gardner 1939-6-6 G- 29 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  UC1536798  Carex nebrascensis Gordon H. True Jr. 1939-6-15 995 Lassen near Grasshopper Valley; Bullard Lake Comment
  RSA201569  Carex nebrascensis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  CAS-BOT-BC119716  Carex nervina John Thomas Howell 1976-7-19 51989 Lassen On Gold Run Creek SW of Susanville. 1386 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
  JEPS28385  Carex pellita George W. Gillett 1957-7-26 906 Lassen e shore Butte Lake 200 yards beyond outlet; Lassen Volcanic National Park, Butte Lake 1844 Comment
  CAS-BOT-BC118399  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49193 Lassen Elysian Valley, northwest of Janesville. 1325 Comment
  CHSC108016  Carex praegracilis Lowell Ahart; John Dittes 2011-6-20 17477 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  CAS-BOT-BC118739  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49471 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC118027  Carex rossii John Thomas Howell; Gordon H. True 1973-8-1 s.n. Lassen Headwater of Baxter Creek, Diamond Mts. 2164 Comment
  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
  HSC48183  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19243 Lassen 2 mi. N of Westwood Comment
  HSC48339  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19176 Lassen Harvey Valley near Cone Springs 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
  CAS-BOT-BC116620  Carex subfusca George Wilson Gillett 1957-7-26 911 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CAS-BOT-BC116621  Carex subfusca Leo David Whitney 1934-8-2 1971 Lassen Moist stream bank, Bridge Creek Camp. 1737 Comment
  CAS-BOT-BC116623  Carex subfusca John Thomas Howell 1973-7-10 49765 Lassen Near Westwood. 1554 Comment
  CHSC77248  Carex subfusca G. Schoolcraft 1997-7-9 2608 Lassen S of Doyle Corral. 1706 Comment
  RSA702448  Carex subfusca L. P. Janeway 2004-6-26 8169 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  UC1108036  Carex subfusca E. B. Copeland 1952-8-13 Lassen at road crossing King's Creek Meadow; Mount Lassen 2225 Comment
  SEINET4170122  Carex subfusca Unknown 1966-6-24 Lassen Above Blue Lake, Warner Mountains, ca. 18 mi airline mi S. E. of Likely 1905 Comment
  SEINET7577214 Image available Carex subfusca George W. Gillett 1957-7-26 911 Lassen Lassen Volcanic National Park, Butte Lake, lake shore near northeast arm of lake. 1844 Comment
  SEINET7577217 Image available Carex subfusca George W. Gillett 1957-7-26 913 Lassen Lassen Volcanic National Park, Butte Lake. 1844 Comment
  JEPS28341  Carex vesicaria George W. Gillett 1957-7-22 879 Lassen along south shore Snag Lake Lassen Volcanic National Park, Snag Lake 1850 Comment
  JEPS63615  Carex whitneyi Leland S. Smith 1922-7-23 75 Lassen Lassen National Forest Comment
  CHSC106570  Castilleja angustifolia K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  JEPS62334  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen ca 6 mi n Honey Lake 1280 Comment
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  CAS-BOT-BC249624  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Route 36, Susanville 1371 Comment
  CHSC106084  Castilleja applegatei subsp. pinetorum Lowell Ahart; John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC12459  Castilleja applegatei subsp. pinetorum Robert W. Severin 1969-7-6 5 Lassen 1 mile e E.L.B.S. on road to Five Points. Comment
  HSC23468  Castilleja applegatei subsp. pinetorum John Pratt 1970-6-21 29 Lassen 1738 Comment
  UC1012479  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25754 Lassen 5 mi n Madeline (Route 395) 1676 Comment
  UC444860  Castilleja applegatei subsp. pinetorum Franklin P. Nutting Lassen s of Eagle Lake (mountains) Comment
  JEPS94529  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1997-6-24 8642 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
  UC1609116  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1993-6-14 5525 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd (Lassen A1), at Sandy Beach, on the w shore of Eagle Lake, on the upper beach between the road and the lake); Eagle Lake 1566 Comment
  CHSC117210  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 20993 Lassen West of pond, 110 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
  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
  JEPS126474  Castilleja linariifolia Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-8-10 CA 350 -067 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  JEPS62836  Castilleja linariifolia John Weiler 1970-7-8 70240 Lassen n shore Eagle Lake Comment
  JEPS62629  Castilleja miniata Clare B. Hardham 1969-8-28 17424 Lassen w of Janesville; Sierra Nevada Comment
  CHSC5902  Castilleja pilosa J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  UC1924580  Castilleja pilosa Debra Valov 2006-5-29 2006032 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1282 Comment
  JEPS4336  Castilleja tenuis Brown and Wieslander 1922-7-18 36 Lassen Martin Springs; Eagle Lake Comment
  JEPS74941  Castilleja tenuis T. I. and F. M. Chuang 1975-7-23 7554 Lassen about 2 mi w Westwood (along road to Mountains Meadow Reservoir) Comment
  JEPS103212  Castilleja tenuis G. Schoolcraft 1993-6-29 2314 Lassen Ash Valley RNA 16 miles east of Adin, CA 1554 Comment
  JEPS123842  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2015-7-14 20329 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  SEINET210873  Ceanothus cordulatus N. H. Holmgren, JJ Fay; BLBethers 1970-6-24 4373 Lassen 2 miles west of Westwood at edge of airstrip 1554 Comment
  UC1553382  Ceanothus cordulatus G. Schoolcraft 1988-7-11 1823 Lassen ca 5 mi n Hwy 36 (along Hwy 44) 1676 Comment
  CAS-BOT-BC49258  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7993 Lassen Big Valley Mts. Comment
  CHSC107342  Ceanothus prostratus Lowell Ahart; John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  POM339726  Ceanothus prostratus F. R. Fosberg 1969-8-15 51427 Lassen 10miles W of Susanville Comment
  RSA122353  Ceanothus prostratus C. B. Bradshaw 1939-5-27 233 Lassen S end Black Mt. EF Plot 39-1, s15. 1753 Comment
  UC1281294  Ceanothus prostratus H. E. McMinn 1941-8-27 5400 Lassen 3.5 mi from Pine Cone Inn (5 mi from Newbieber [Neubieber?]); 5 mi from Neubeiber Comment
  CHSC6287  Ceanothus velutinus R. Clicquennoi 1967-7-1 37 Lassen Four miles s of Eagle Lake Biology Station off Gallatin Beach Road. 1554 Comment
  UC1071531  Ceanothus velutinus A. Simontacchi 1940-6-4 797 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle 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
  CHSC91290  Ceanothus velutinus var. velutinus Lowell Ahart; John Dittes 2005-6-2 11943 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, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  RSA747546  Ceanothus velutinus var. velutinus K. M. Meyer, A. Townesmith 2007-7-23 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC184969  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  CDA7344  Centaurea squarrosa Loring White 1950-8-19 Lassen Cramer Ranch. Big Valley. 0 Comment
  SEINET13331058 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 mi. N. of Bieber, Big Valley Comment
  JEPS84967  Centaurium exaltatum Barbara Ertter 1987-7-24 7305 Lassen ca 0.75 mi ene Beckwourth Pass (at the end of old crumbling paved road) 1524 Comment
  RSA715992  Centaurium muehlenbergii L. Ahart, John Dittes 2005-6-2 11977 Lassen 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. 1409 Comment
  CHSC76087  Centromadia pungens subsp. pungens Lowell Ahart; Vernon H. Oswald 1999-9-13 8224 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC99981  Centromadia pungens subsp. pungens L. P. Janeway 2008-8-2 9523 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  JEPS12581  Centromadia pungens subsp. pungens R. F. Hoover 1940-10-1 4657 Lassen between Janesville and Standish; Honey Lake Comment
  UC762592  Centromadia pungens subsp. pungens R. F. Hoover 1940-10-1 4657 Lassen between Janesville and Standish; Honey Lake Comment
  CAS-BOT-BC279595  Centromadia pungens subsp. pungens Gladys L. Smith; Margaret Williams; Loring Williams; Charles Smith 1983-9-15 8392 Lassen Along Lassen 3-A, the Susanville By-pass for Rte. 395 1219 Comment
  UC1523792  Cercis occidentalis Gary Schoolcraft 1981-6-9 447 Lassen w Nubieber 1280 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
  UC1136909  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  CHSC111255  Chaenactis douglasii var. douglasii L. P. Janeway; B. Castro 2012-7-3 10938 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
  JEPS30488  Chaenactis douglasii var. douglasii Peter H. Raven with Otto T. Solbrig 1958-6-17 13291 Lassen 0.4 mi s of Ravendale (along U.S. Highway 395) Comment
  UC1777700  Chaenactis douglasii var. douglasii Donald W. Kyhos 1967-9-1 67 -88 Lassen Mt. Lassen National Park. Area within 1/2 mile north of Hat Lake. Pumice slopes Comment
  UC585132  Chaenactis xantiana E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1770 Lassen sw facing slope of ridge above Red Rock 1524 Comment
  SEINET10686163  Chamaebatia foliolosa Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 149 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
  CHSC30603  Chamaebatiaria millefolium Mary Nesset 1975-7-16 10 Lassen E.L.B.S. water tank. 1554 Comment
  CHSC4857  Chamaebatiaria millefolium R. Carter 1967-7-13 588 Lassen On the rd to Eagle Lake, Biology Station and Willow Creek. 1584 Comment
  CHSC29929  Chamaesaracha nana Robin L. Ondricek 1978-6-8 49 Lassen E side of Murrers Upper Meadow along road. 1584 Comment
  CHSC76100  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8234 Lassen On the west side of Highway 139, near the south end of Eagle Lake and the highway, Eagle Lake. 1554 Comment
  UC1609091  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and Lowell Ahart 1993-7-8 5660 Lassen 1.9 mi n Hwy 44 (Pittville Rd., on se edge of lake, between the rr and the lake); Poison Lake 1709 Comment
  UC17811  Chamaesyce serpyllifolia M. S. Baker and Frank Nutting 1894-7-24 Lassen Willow Creek 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
  UC62674  Cheilanthes gracillima Baker and Nutting 1894-7-30 Lassen Silver Lake 2286 Comment
  UCD150397  Chenopodium glaucum var. salinum William Anderson 1963-7-22 s.n. Lassen Hartson Reservoir. Comment
  CAS-BOT-BC426335  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  CAS-BOT-BC426358  Chenopodium incognitum Margaret Williams; Steven Williams 1974-7-26 s.n. Lassen Near Hallelujah Junction 1493 Comment
  CHSC68860  Chenopodium simplex Vernon Oswald; Lowell Ahart 1997-6-24 8602 Lassen South of Susanville on the north side of Diamond Mtn., at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. 1655 Comment
  CAS-BOT-BC451355  Chimaphila menziesii Clare B. Hardham 1971-8-22 18388 Lassen Diamond Mountain: North slopes 2133 Comment
  CAS-BOT-BC247864  Chorizanthe watsonii John Thomas Howell 1934-6-10 11854 Lassen 4 miles south of Omira Comment
  POM105904  Chorizanthe watsonii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  CHSC13793  Chrysolepis sempervirens Robert Smallwood 1970-7-9 154 Lassen Gallatin Peak, 1/2 mile west of Dean's Meadow. 1950 Comment
  CHSC30554  Chrysolepis sempervirens Sori H. Shad 1970-6-26 20 Lassen Found at the edge of Deans Meadow. 1828 Comment
  RSA755658  Chrysopsis villosa var. hispida Barbara Ertter 1987-7-24 7302 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  CAS-BOT-BC140658  Chrysothamnus humilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50663 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CHSC78478  Chrysothamnus humilis Vernon H. Oswald 2000-7-31 9945 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  UC1137758  Chrysothamnus humilis L. R. Short and J. Warren 1936-8-17 S- 495 Lassen Burgess Spr. Exp. Range Lassen Forest 1760 Comment
  CDA36350  Chrysothamnus nauseosus B. Villegas 2011-8-25 Lassen Highway 395 just above Doyle. 0 Comment
  CAS-BOT-BC106023  Chrysothamnus viscidiflorus subsp. lanceolatus Ynez Whilton Winblad 1935-9-23 s.n. Lassen Susanville Comment
  CAS-BOT-BC100758  Chrysothamnus viscidiflorus subsp. puberulus P. Monnet 1913-7-1 792 Lassen Hot Spring Peak 1524 Comment
  SEINET7450943 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus M. J. Williams 1974-7-29 1974 -L-56 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  UC1483871  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1980-10-8 357 Lassen near turn-off to Big Spring (along Post Camp road) 1706 Comment
  CAS-BOT-BC162754  Chylismia claviformis subsp. cruciformis Elmer I. Applegate 1934-5-4 8917 Lassen Secret Valley Comment
  CAS-BOT-BC279833  Cichorium intybus Louella Bass 1973-6-15 109 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  RSA299121  Cinna latifolia J. T. Howell, Gordon H. True 1973-8-1 50346 Lassen Gold Run Creek road, south of Susanville, Diamond Range. 1951 Comment
  CAS-BOT-BC285336  Cirsium andersonii Annie M. Alexander; Louise Kellogg 1946-8-13 5156 Lassen West side of Eagle Lake Comment
  CHSC75452  Cirsium cymosum Vernon H. Oswald 1999-6-9 9740 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. Along the road. 1356 Comment
  JEPS30610  Cirsium cymosum var. cymosum Peter H. Raven with Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  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
  JEPS30608  Cirsium douglasii var. breweri Peter H. Raven and Otto T. Solbrig 1958-6-17 13280 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  CHSC116356  Cirsium inamoenum J. R. Keck Jr.; D. L. Haws 1980-7-22 PDR 330194 Lassen Ravendale, BLM rangeland. 1625 Comment
  SEINET2050011 Image available Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  CDA1489  Cirsium ochrocentrum Lee Wheeler 1959-7-23 s.n. Lassen Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.) Comment
  CDA1490  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14199 Lassen Madeline Plains E base of Dry Valley Ridge, 10 mi. W of Termo, 3 mi N of Termo-Grasshopper Rd. Comment
  RSA186832  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 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
  CAS-BOT-BC280424  Cirsium ochrocentrum Lee E. Wheeler 1959-7-23 s.n. Lassen M. A. Mallory prop. Richmond Rd., ca. 4 mi SE/Susanville Comment
  CAS-BOT-BC280440  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CDA1523  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen Honey Lake; M.A. Mallory prop. Richmond Rd., about 4 mi. SE of Susanville. 0 Comment
  RSA127309  Cirsium remotifolium var. rivulare J. T. Howell 1952-7-11 28836 Lassen Just S of Oregon line on road to Smith River, Del Norte County Comment
  CAS-BOT-BC286302  Cirsium scariosum John Thomas Howell 1934-6-14 12153 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC286303  Cirsium scariosum Alice Eastwood; John Thomas Howell 1940-6-11 7961 Lassen Eastern Fall River Valley Comment
  CAS-BOT-BC286307  Cirsium scariosum John Thomas Howell 1976-7-20 52025 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  JEPS109645  Cirsium scariosum Dean W. Taylor 2002-6-21 18176 Lassen Windmill Flat (lying ca. 1.5 mi NW of Snider Lake), north end of the flat near the base of the windmill 1706 Comment
  RSA504590  Cirsium scariosum Bruce Bartholomew 1988-6-25 4370 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CDA36753  Cirsium scariosum D. B. Joley 1976-6-16 10 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  UC1037273  Cirsium scariosum var. americanum Leo Whitney 1934-7-8 1765 Lassen meadow near Harvey Spring (ca. 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  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-BC172038  Clarkia gracilis subsp. gracilis Louella Bass 1973-5-29 EV 79 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC92753  Clarkia gracilis subsp. gracilis L. P. Janeway 2005-7-4 8465 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  CHSC91195  Clarkia lassenensis Lowell Ahart; John Dittes 2005-6-2 11951 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction. 1512 Comment
  CHSC9542  Clarkia lassenensis A. W. Harvilik 1967-6-30 18 Lassen Collected near the junction of rd. 5.19 and the rd. to Murrer's Meadow. 1524 Comment
  HSC81478  Clarkia lassenensis Thomas W. Nelson, Jane P. Nelson 1980-7-6 6020 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  JEPS90014  Clarkia purpurea subsp. quadrivulnera Dean Wm. Taylor with Robert A. Price 1988-6-4 9770 Lassen 6 mi e of MacArthur (Fall River Valley along Highway 299 at crossing of Frazer Creek, Pit River Watershed); Fall River Valley, Highway 299 1036 Comment
  JEPS43672  Clarkia rhomboidea Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  JEPS96107  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1996-6-17 7780 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side Hwy. 36 between trail & hwy. spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  CHSC59559  Clarkia stellata Mary Meyer 1980-7-1 Lassen Along road traversing southern end of McCoy Flat. 1645 Comment
  CAS-BOT-BC439760  Claytonia rubra subsp. depressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49179 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC99500  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2008-6-20 14910 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
  UC1136873  Claytonia rubra subsp. rubra L. R. Short and Wm. Gansberg 1936-6-2 S- 359 Lassen Burgess Spring Experimental Range; Lassen Forest 1865 Comment
  CHSC68621  Cleome platycarpa Vernon H. Oswald; Lowell Ahart 1997-5-7 8403 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. Growing in disturbed roadside gravel. 1420 Comment
  NY222716  Cleome platycarpa G. H. True Jr. 1938-7-8 904 Lassen North of Hot Spring Mountain. 1371.6 Comment
  NY222741  Cleome platycarpa D. W. McNeal 1978-5-30 2123 Lassen Along Hwy. #395, 3.4 mi. N of the jct of Co. Hwy. #320 (Wendel Rd.) at the Nobel Emigrant Trail Historical Marker. Comment
  SEINET5765627  Cleomella parviflora A. Tiehm 1980-1 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231 Comment
  NY242079  Cleomella plocasperma R. F. Hoover 1940-9-29 4642 Lassen Litchfield. Comment
  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
  CHSC108005  Collinsia parviflora Lowell Ahart; John Dittes 2011-6-20 17487 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC112413  Collinsia parviflora Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18737 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  UC1143004  Collinsia parviflora August L. Hormay 1934-5-9 Lassen Lassen Nation Forest, Black Mountain Headquarters Black Mountain Headquarters; Lassen Nation Forest, Black Mountain Headquarters 1706 Comment
  SBBG12810  Collinsia parviflora A. I. Richardson 1961-5-30 5 Lassen 9 mi S of Eagle Lake 1402 Comment
  SEINET10548296  Collinsia parviflora Mary Susan Taylor 1974-5-4 Taylor 225 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
  UC2016544  Collinsia parviflora Richard Olmstead 1984-6-26 578 Lassen 3.5 miles east of junction of Forest Service Road and Red Rock Lookout Road (28N02), on Red Rock Lookout Road. Near small stream lined with alders. Comment
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  CHSC25140  Collomia grandiflora R. Clicquennoi 1967-6-30 28 Lassen W central shore of Eagle Lake, 1/2 mi s of Pelican Point. 1554 Comment
  RSA523347  Collomia grandiflora G. H. True 1938-7-9 906 Lassen Near Horse Lake 1524 Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  JEPS17747  Collomia linearis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5407 Lassen 4.4 mi s Patterson Ranger Sta.; southern end of Warner Mountains, Modoc National Forest, Lon 2057 Comment
  CHSC29920  Collomia tinctoria Robin L. Ondricek 1978-6-20 64 Lassen Gallatin Burn, 1.8 mi s of Five Corners. 2011 Comment
  CHSC6199  Collomia tinctoria J. B. Kimsey 1946-6-13 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  CHSC71887  Consolida ajacis Vernon H. Oswald; Lowell Ahart 1998-9-8 9584 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Between the road and the marsh. 1258 Comment
  JEPS124868 Image available Convolvulus arvensis Laurel Loeblich 1964-6-30 56 Lassen 3 mi. north of Hallelujah Junction (highways 40 & 395) on 395. Comment
  JEPS124870 Image available Convolvulus arvensis Laurel Loeblich 1964-6-30 56 -2 Lassen 3 miles north of Hallelujah Junction (highways 40 and 395) on 395. Great Basin flora; pinion pine - juniper- sagebrush. Comment
  CAS-BOT-BC286115  Conyza canadensis Margaret Williams 1974-7-27 74 -L-44 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS17408  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 mi w of Nevada Line, 17.5 mi e of US Hwy 395); draingage of Rush Creek 1341 Comment
  JEPS74320  Cordylanthus tenuis subsp. tenuis John Thomas Howell and Gordon H. True 1973-7-31 50019 Lassen on road from Janesville to Thompson Peak; Sierra Nevada, Diamond Range 1737 Comment
  CHSC118478  Corydalis aurea Allison Sanger 2015-5-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Outlet of Papoose Meadows, above rock weir blocking outlet. 1624 Comment
  NY500130  Corydalis aurea subsp. aurea N. H. Holmgren 1980-7-4 9516 Lassen Observation Peak, near top of Mountain, 17 km (10.5 miles) airline distance east of Ravendale 2420 Comment
  UC581283  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2314 Lassen about a mi below summit; Black Mountain 1940 Comment
  UC91865  Crepis acuminata T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC118479  Crepis acuminata Don Lepley 2016-6-21 Lassen Lassen National Forest. Hat Creek Ranger District. Flat west of Blacks Mt., 0.2 mile west of junction of Roads 34N07 and 34N05Y. UTM 648055.1 E x 4515134.8N. 1726 Comment
  UC581278  Crepis bakeri subsp. cusickii G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2331 Lassen valley flat along road halfway between Bogard Ranger Station and Harney Valley 1630 Comment
  CHSC93561  Crepis intermedia Lowell Ahart; John Dittes 2005-6-1 11918 Lassen Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC581208  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2216 Lassen just w ridge crest between Willow Creek Valley and Horse Lake 524 Comment
Read comments
Jul 18 2007
  CAS-BOT-BC291548  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-7 2203 Lassen Susanville just west of the town on Inspiratin Point Comment
  UC1035998  Crepis modocensis subsp. modocensis Helen K. Sharsmith 1955-6-22 4497 Lassen 5 mi beyond Blue Lake (on road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UC76004  Crepis monticola Milo S. Baker July, 1894 Lassen near Bieber; Big Valley, Vicker's Ranch Comment
  UC773982  Crepis monticola L. R. Short and J. Warren 1936-6-23 S- 444 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1839 Comment
  UC581265  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2261 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville) Comment
  UC581304  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2352 Lassen sw-facing slope of mts. along hwy from McArthur to Bieber; Big Valley Mts. 1100 Comment
  UC773980  Crepis occidentalis L. R. Short and Wm. Gansberg S- 361 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1871 Comment
  UCD130971  Crepis occidentalis B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  POM253179  Crepis occidentalis subsp. pumila A. A. Heller 1938-6-23 15201 Lassen Along Highway 36 in the valley east of Fredonyer Pass Comment
  CHSC60650  Crocidium multicaule Vernon H. Oswald; Lowell Ahart 1993-4-17 5275 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  JEPS124754 Image available Croton setiger Laurie Hooker 1965-7-12 113 Lassen On highway 139, 13 miles East of Susanville. Comment
  UC1951064  Cryptantha Debra Valov 2007-5-22 2007076 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  RSA647827  Cryptantha Marion P. Harthill 1971-6-20 206 Lassen Susanville Comment
  CHSC29967  Cryptantha affinis R. A. Schlising 1979-6-7 3450 Lassen Sof Eagle Lake, in Lassen National Forest, 5 mi N of Hwy 36, on Hwy A1. 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
  SEINET10972821  Cryptantha ambigua Jeffrey Huber 1971-6-2 Huber 126 Lassen Approx. 30 mi N of Susanville, on CA Hwy 139, in basalt; Pinus-Artemesia-Juniper Assoc. 1646 Comment
  CHSC93236  Cryptantha circumscissa John Dittes; Scott Chamberlain 2004-6-28 1010 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  JEPS67504  Cryptantha circumscissa W. L. Jepson 1918-8-2 7761 Lassen Beckwith Pass 1463 Comment
  POM368344  Cryptantha circumscissa Christopher Davidson 1975-6-7 2761 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  POM72292  Cryptantha circumscissa Marcus E. Jones 1897-6-18 7079 , 7076 Lassen Chat 1524 Comment
  CAS-BOT-BC189458  Cryptantha circumscissa var. circumscissa Alice Eastwood; John Thomas Howell 1940-6-16 8333 Lassen Near Susanville Comment
  POM73157  Cryptantha crassisepala var. elachantha Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.?] 1220 Comment
  UCD55289  Cryptantha flaccida Ellen Dean; Gary Schoolcraft 2006-5-16 3110 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. 1260 Comment
  RSA0011499  Cryptantha hendersonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 46976 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CHSC91303  Cryptantha pterocarya var. pterocarya Lowell Ahart; John Dittes 2005-6-2 11982 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  NY1111892  Cryptantha pterocarya var. pterocarya G. Schoolcraft 1982-4-29 635 Lassen Amedee Canyon 1280 Comment
  CHSC77202  Cryptantha torreyana G. Schoolcraft 1997-8-6 2653 Lassen S side of Gold Run Rd. 1889 Comment
  POM72225  Cryptantha torreyana Marcus E. Jones 1897-6-25 7103 Lassen Susanville. 1341 Comment
  CHSC93685  Cryptantha watsonii Lowell Ahart; John Dittes 2005-6-1 11892 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
  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
  JEPS47106  Cuscuta californica Brown and Wieslander 1922-8-20 85 Lassen Martin Springs Eagle Lake 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
  CHSC112187  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 f 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the Crest. 1950 Comment
  SBBG50491  Cynoglossum occidentale J. T. Howell 1974-7-9 50483 Lassen between Susanville and SW end of Eagle Lake 1828 Comment
  CHSC66868  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir SW of Westwood. Along the receding marshy edge of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  RSA324194  Dalea ornata A. Tiehm, Raymond Evans, James Young 1984-6-7 8592 Lassen Flats n the northwest side of Shaffer Mountain. 7.5 airmiles NNW of Litchfield. 1372 Comment
  UC1483795  Damasonium californicum G. Schoolcraft 1979-6-26 98 Lassen Buckthorn Lake n.w. of Pyramid Lake 1889 Comment
  UC1731161  Damasonium californicum Dean W. Taylor 1974-6-14 3714 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd. Poison Lake; Modoc Plateau 1615 Comment
  CAS-BOT-BC445514  Damasonium californicum 1927-7-15 72 Lassen Lassen National Forest. Feather Lake 1737 Comment
  JEPS124717 Image available Damasonium californicum M. L. Wheelis 1964-6-30 137 Lassen Second bridge (to the north) between Bieber and New Bieber. Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
Read comments
Jul 11 2013
  CAS-BOT-BC192327  Danthonia unispicata Parkison 1916-6-10 15 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CAS-BOT-BC192330  Danthonia unispicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50691 Lassen South and southeast of Diamond Mt. 2286 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
  UCD61297  Danthonia unispicata F. C. Raney 1966-6-25 Lassen Harvey Valley, Lassen National Forest. Comment
  CHSC67595  Delphinium andersonii James D. Jokerst 1983-5-30 1794 Lassen Ca. 1.5 mi N of Eagle Lake, ca. 50 m W of Hwy. 139, ca. 1.0 mi N of Eagle Lake Rd. Comment
  JEPS15484  Delphinium andersonii Joseph and Hilda W. Grinnell 1938-6-13 1098 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  JEPS6109  Delphinium nudicaule A. A. Heller 1938-6-4 15149 Lassen E of Fredonyer Pass, Lassen Co. Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  CAS-BOT-BC9944  Delphinium nudicaule Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  CAS-BOT-BC194256  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-7 12463 Lassen Near Feather Lake Comment
  CDA31657  Deschampsia cespitosa subsp. cespitosa Gordon Leppig, T. LaBanca 1997-6-28 511 Lassen Modoc National Forest, Blue Lake Ranch, peatland in large meadow complex. Comment
  JEPS71178  Deschampsia cespitosa subsp. cespitosa Brown and Wieslander 71 Lassen Comment
  UC60239  Deschampsia cespitosa subsp. cespitosa M. S. Baker and F. Nutting July 1894 Lassen Eagle Lake 1524 Comment
  CHSC99495  Deschampsia danthonioides Lowell Ahart; John Dittes 2008-6-20 14926 Lassen Vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  HSC100183  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 2011-8-15 13379 Lassen Along Hwy. 36 at the intersection with the Bizz Johnson Trailhead Road. Comment
  SACT000919  Deschampsia danthonioides Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  UC1024884  Deschampsia danthonioides Leo Whitney 1935-5-26 3137 Lassen 10 mi. e. Adin (Ash Creek); Ash Creek Comment
  UC1131557  Deschampsia danthonioides A. Simontacchi 1940-6-4 813 Lassen 14.8 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UCD62999  Deschampsia danthonioides John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49499 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  JEPS28056  Deschampsia elongata George W. Gillett 1957-7-28 925 Lassen trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake (dry wash 100 yds. above trail junction); Lassen Volcanic Nat'l Park 1859 Comment
  UC38006  Deschampsia elongata J. Burtt Davy Jun 17 1897-Jun 24 1897 3317 Lassen Honey Lake Valley Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  CHSC4810  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected at Eagle Lake Biology Station, e central shore of Eagle Lake. 1524 Comment
  UC1143009  Descurainia richardsonii August L. Hormay 1934-5-11 Lassen 2.5 mi nw Hall's Flat; Lassen National Forest 1676 Comment
  RSA0035397  Descurainia sophia Lowell Ahart, John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC402570  Dicentra uniflora Duncan Dunning 1922-5-15 s.n. Lassen Lassen National Forest. Facht - Robber Creek 1524 Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  CAS-BOT-BC299811  Dieteria canescens var. canescens Mrs. H. C. Cantelow 1940-10-5 s.n. Lassen About 1 1/2 mi. N.W. of Johnstonville, east of Sierra Nevada Mts. Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  UC1609238  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  UC506907  Dieteria canescens var. shastensis George A. Fischer and Irwin H. Johnson 1933-7-14 F- 268 Lassen Lassen Forest 1752 Comment
  CAS-BOT-BC153671  Diplacus mephiticus G. Schoolcraft 1989-6-17 1909 Lassen Northwest slope of Shaffer Mtn. Comment
  CAS-BOT-BC153673  Diplacus mephiticus Clare B. Hardham s.n. Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC153677  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CHSC26185  Diplacus mephiticus J. P. Kroessig 1977-5-23 28 Lassen Small scattered population at Eagle Lake Biological Station (CSUC), ca 37 km nnw of Susanville. 478 Comment
  CHSC4812  Diplacus mephiticus R. Carter 1967-7-7 577 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  CHSC64898  Diplacus nanus Vernon H. Oswald 1995-6-26 6936 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
  CDA31694  Distichlis spicata T. C. Fuller 1959-7-7 4733 Lassen Hwy 395 just east of Standish. 0 Comment
  CHSC7693  Distichlis spicata Beverley J. Wise 1969-5-23 129 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd 320. 1249 Comment
  UC580711  Distichlis spicata E. Sawyer 1935-6-27 214 Lassen Long Valley 1310 Comment
  CHSC7735  Dodecatheon alpinum Beverley J. Wise 1969-4-20 82 Lassen 14.7 mi. north of Susanville on Hwy 139. 1463 Comment
  UC444833  Dodecatheon alpinum Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  NY677195  Dodecatheon conjugens G. Schoolcraft 1988-4-25 1783 Lassen Ash Valley RNA/ACEC 16 miles east of Adin 1554 Comment
  UC1776683  Dodecatheon conjugens G. Schoolcraft 1999-5-5 2814 Lassen Along Tuledad Road about 2 mile NE of Dodge Reservoir 1859 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
  CHSC29898  Dodecatheon jeffreyi Robin L. Ondricek 1978-7-7 92 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  CHSC6234  Dodecatheon jeffreyi M. West 1946-6-20 Lassen Meadow above Grasshopper Valley. 1828 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
  JEPS14618  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (forest adjacent to State Highway 299); Lassen National Forest 1219 Comment
  JEPS21587  Downingia bacigalupii Calvin McMillan 1949-6-15 1543 Lassen w of Bieber (nw Lassen County (corner)) Comment
  RSA340002  Downingia bacigalupii Noel Holmgren, Patricia K. Holmgren 1980-7-3 9482 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UC1024290  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (adjacent to State Highway 299); Lassen National Forest Comment
  UC1483852  Downingia bacigalupii G. Schoolcraft 1980-7-15 313 Lassen n end Nelson Corral Reservoir 1804 Comment
  UC1609180  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1993-6-28 5612 Lassen ne of Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvye Mtn); Harvey Mtn. 1798 Comment
  CAS-BOT-BC492927  Downingia bacigalupii Louis K. Mann; M. Pat Mann 1963-6-18 s.n. Lassen On State Hwy 139 from Susanville to Adin, 42 mi N of Susanville. Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  CHSC60887  Downingia bicornuta var. bicornuta Vernon H. Oswald; Lowell Ahart 1993-7-8 5649 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  UC157671  Downingia bicornuta var. bicornuta Milo S. Baker Lassen near Eagle Lake Comment
  UC890609  Downingia bicornuta var. bicornuta Elmer I. Applegate 1929-6-24 5883 Lassen just n Bieber (nw corner of Lassen County) Comment
  JEPS108510  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-28 232 -95 Lassen Between Beiber and Adin; SE corner of Rt. 299 and Finley Rd. Comment
  JEPS120848  Downingia cuspidata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18727 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS97322  Downingia insignis Vernon H. Oswald and L. Ahart 1995-8-14 7184 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  SJSU3581  Downingia insignis P. L. Billings 1965-7-13 76 Lassen near Nubieber 1274 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
  JEPS114644  Downingia laeta Lowell Ahart, John Dittes 2008-6-20 14928 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET10539558  Draba David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17801 Lassen 6 mi. N of hallelujah jct. On u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  HSC95149  Drosera anglica Gordon Leppig, J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1028268  Drymocallis lactea var. austiniae A. Simontacchi 1940-6-6 825 Lassen 9.3 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad. Comment
Read comments
Oct 7 2008
  CHSC112411  Elatine Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18752 A Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA0105584  Elatine Lowell Ahart, John Dittes 2013-7-22 18883 Lassen 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
  UCR227660  Elatine R. F. Thorne, Larry E. DeBuhr 1975-8-22 47213 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
  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
  CHSC116200  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20298 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
  CHSC60896  Elatine californica Vernon H. Oswald; Lowell Ahart 1993-7-8 5646 Lassen Pittville Rd (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  CHSC112748  Elatine rubella Lowell Ahart; John Dittes 2013-7-22 18883 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
  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
  UC1836  Eleocharis acicularis J. Burtt Davy Jun 17-24 1897 3290 Lassen Honey Lake Valley Comment
  CHSC66272  Eleocharis bella Vernon H. Oswald 1996-6-24 7851 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow just S of the cabins. 1633 Comment
  CAS-BOT-BC113563  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. Comment
  CHSC112798  Eleocharis macrostachya Lowell Ahart; John Dittes 2013-7-22 18848 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS120126  Eleocharis macrostachya Lowell Ahart, John Dittes 2012-7-9 18293 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET7586406 Image available Eleocharis montevidensis Unknown 1969-9-6 39258 Lassen Along Long Valley Creek, c 14 mi SE of Milford. 1311 Comment
  JEPS64130  Eleocharis palustris Brown and Wieslander 1922-7-30 76 Lassen Martin Springs, Eagle Lake Comment
  RSA252444  Eleocharis parishii Robert F. Thorne, C. W. Tilforth 1969-9-6 39258 Lassen along Long Valley Creek, c. 14 mi. SE of Milford. 1311 Comment
  HSC22948  Eleocharis parishii John Pratt 1970-6-21 36 Lassen 1707 Comment
  RSA127038  Eleocharis quinqueflora Robert W. Gardner 1939-6-15 G- 36 Lassen Little Harvey Valley 1700 Comment
  UC1100132  Elodea nuttallii Herbert L. Mason and Verne Grant 1947-7-9 13292 Lassen 5 miles east of Bieber Comment
  POM112303  Elymus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  SEINET10525781  Elymus X hansenii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 886 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  UCD62907  Elymus X saundersii Beecher Crampton 1954-7-5 2061 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  JEPS127354  Elymus caput-medusae Lowell Ahart, John Dittes 2016-7-13 21145 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
  SEINET10521741  Elymus cinereus Paul Gallian, David B. Dunn 1971-6-2 Gallian 490 Lassen 5 mi. S. of Milford near Honey Lake on U.S. Hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - Jeffrey Pine on mountain range to west at approximately the same altitude. 1250 Comment
  CAS-BOT-BC227484  Elymus elymoides John Thomas Howell 1976-7-20 52000 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  JEPS128414  Elymus elymoides Catherine Bauer with Ellen Bauer Benson 2017-8-16 20 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  SEINET12745634  Elymus elymoides F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  UCD61535  Elymus elymoides L. D. Whitney 1935-6-25 Lassen Ashurst Mt. Comment
  UCR7841  Elymus elymoides Marilyn Malin 1968-6-21 248 Lassen Along roadside, near tree blazed to indicate path to the ice caves on the west side of Eagle Lake Comment
  UC1133007  Elymus elymoides subsp. elymoides H. P. Hagge 1929-9-11 23 Lassen Logan Mtn. Lassen National Forest, Eagle Lake Quadrangle Comment
  UC773976  Elymus elymoides subsp. elymoides L. R. Short and J. Warren 1936-6-29 S- 461 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1820 Comment
  JEPS126495  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-6-28 CA 350 -72 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. 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
  SEINET10554356  Elymus glaucus R. Ondricek 1978-7-22 Ondricek 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. T31N, R11E, sw quarter of Sec. 8, Antelope Peak Quadrangle. 1585 Comment
  CAS-BOT-BC234093  Elymus multisetus John Thomas Howell 1976-7-20 52001 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD62499  Elymus multisetus John Thomas Howell 1976-7-20 52001 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  JEPS121262  Elymus repens Lowell Ahart, John Dittes 2013-7-23 18894 Lassen About 20 feet SW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC111248  Elymus spicatus B. Castro; L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. 1417 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
  UCD51690  Elymus spicatus John Thomas Howell 1976-7-20 52002 Lassen about 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  UC188858  Elymus trachycaulus Milo S. Baker Lassen mts. s Dixie Valley Comment
  CHSC99783  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2007-6-20 14908 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 of Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC204359  Elymus trachycaulus subsp. trachycaulus G. Schoolcraft 1994-8-2 2396 Lassen About 2 miles NW of Boot Lake 2438 Comment
  CHSC114411  Elymus trachycaulus subsp. trachycaulus Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, in landing at end of Road 28N52A. 2133 Comment
  HSC8755  Elymus trachycaulus subsp. trachycaulus M. T. Milligan 1964-8-6 205 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  SEINET10561204  Elymus triticoides subsp. multiflorus Howell 1973-6-28 Howell 49522 Lassen Elysian Valley, west of Janesville. 1326 Comment
  CHSC76104  Elytrigia elongata Lowell Ahart; Vernon H. Oswald 1999-9-13 8212 Lassen On the edge of a canal, just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1220396  Elytrigia elongata T. C. Fuller 1963-7-15 10887 Lassen 2.9 mi se Pittville (s of road to Little Valley) Comment
  CDA2066  Elytrigia repens H. S. Milton, P. Milton Jul 1980 Lassen Herman S. & Paul Milton Ranch, Riverside District, Hwy 395, 8 miles east of Susanville. 0 Comment
  CAS-BOT-BC81880  Ephedra viridis P. Monnet 1913-7-1 839 Lassen Hot Springs Peak 2133 Comment
  CHSC111257  Ephedra viridis L. P. Janeway; B. Castro 2012-7-3 10940 A 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
  CHSC36500  Ephedra viridis Theresa Costa 1982-6-2 26 Lassen Ca. 18 mi e jct Hwy 139 and Ravendale Rd, ca. 1.5 yds w Ravendale Rd. Comment
  UC119065  Ephedra viridis Mrs. R. M. Austin 1876-7-1 285 Lassen e of Susanville; Antelope Grade Comment
  UC766775  Ephedra viridis R. F. Hoover 1940-10-5 4671 Lassen pass between Shaffer Mt. and Warren Peak Comment
  SEINET11739305  Ephedra viridis M. Sacks, Detzer 1977-1 13 Lassen 4 km S of Hwy 395 1386 Comment
  CHSC113061  Epilobium brachycarpum Lowell Ahart; John Dittes 2013-7-22 18844 Lassen West margin of a duck field, about 20 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC14185  Epilobium brachycarpum M. S. Taylor 1974-7-10 279 Lassen Ca. 50 ft w of road to Gallatin Beach, ca. 5 mi s of Gallatin Beach on Eagle Lake, ca. 10 mi nw of Susanville. 1524 Comment
  JEPS121278  Epilobium brachycarpum Lowell Ahart 2013-7-22 18844 Lassen W margin of duck field, about 20 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1137772  Epilobium brachycarpum August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest 1706 Comment
  UC507002  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  JEPS119650  Epilobium campestre Lowell Ahart, John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC111098  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes 2012-7-9 18301 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 mile (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC95173  Epilobium ciliatum subsp. ciliatum Gordon Leppig, J. Cromwell 1997-7-27 617 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  POM46399  Epilobium ciliatum subsp. ciliatum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC99524  Epilobium ciliatum subsp. glandulosum Lowell Ahart; John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC36981  Epilobium densiflorum M. S. Taylor 1982-8-19 5032 Lassen Roadside, along dirt rd 326, ca. 1/2 mi e of its jct with Milford Grade, ca. 1 air mi se of Milford. 1310 Comment
  CHSC66251  Epilobium hallianum Vernon H. Oswald; Lowell Ahart 1996-6-24 7849 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  UC773935  Epilobium hallianum L. R. Short and J. Warren 1936-6-11 S- 429 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1737 Comment
  HSC95331  Epilobium oregonense Gordon Leppig, J. Cromwell 1997-7-27 605 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  SEINET10453023  Epilobium oregonense Mary Susan Taylor 1974-1 Taylor 279 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  RSA508633  Epipactis gigantea Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  CAS-BOT-BC57099  Equisetum X ferrissii Margaret Williams; Louella Bass 1972-10-22 EV 8 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC57236  Equisetum laevigatum Alice Eastwood; John Thomas Howell 1940-6-11 7996 Lassen Bieber Comment
  CHSC71896  Eragrostis pectinacea var. pectinacea Vernon H. Oswald; Lowell Ahart 1998-9-8 9578 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Near the highway. 1255 Comment
  SJSU9835  Eremogone congesta J. W. Tilden 1960-6-27 1505 Lassen foot of Moonlight Rd near Westwood 1524 Comment
  CAS-BOT-BC174189  Eremogone congesta var. congesta Mrs. R. M. Austin; Mrs. Bruce 1898-6-1 2156 Lassen [Madaline] Madeline Plains Comment
  CHSC89729  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8165 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC5228  Eremogone congesta var. simulans J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2421 Comment
  CHSC72310  Eremogone congesta var. subcongesta L. P. Janeway; Glenn Clifton 1998-7-9 5730 Lassen Ridgetop saddle, 1.0 mi east of Diamond Mtn. 2215 Comment
  CHSC87117  Eremogone congesta var. subcongesta L. P. Janeway 2001-6-20 7199 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  UC725471  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen on Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  CHSC100870  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  CHSC6201  Eriastrum signatum M. West 1946-7-2 Lassen Spalding's, Eagle Lake. 1554 Comment
  CAS-BOT-BC515175  Eriastrum signatum Rimo Bacigalupi; G. T. Robbins 1955-7-21 5417 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  RSA0124144  Eriastrum signatum R. F. Thorne, C. W. Tilforth 1969-9-6 39264 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  OBI77051  Eriastrum sparsiflorum Anthony Baniaga 2011-7-1 410 Lassen CDFB. Bass Hill Wildlife Area W of hwy 395. Janesville quad T29N R13E sec 19 SW of SW 1279 Comment
  NY1012941  Eriastrum sparsiflorum var. wilcoxii G. Schoolcraft 1982-7-7 773 Lassen Fort Sage Mountains 1950.7 Comment
  UC506538  Eriastrum wilcoxii J. Burtt Davy Jun 17 1897-Jun 24 1897 3408 Lassen Amedie Honey Lake Valley Comment
  CAS-BOT-BC286601  Ericameria bloomeri Clarence R. Quick 1964-8-1 64 -94 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CAS-BOT-BC286602  Ericameria bloomeri G. Schoolcraft 1987-9-1 1770 Lassen About midway up N. slope of Observation Mtn. along road 2072 Comment
  CAS-BOT-BC286603  Ericameria bloomeri R. K. Gierisch; D. H. Esplin 1969-8-27 3598 Lassen Lassen National Forest Comment
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  RSA79228  Ericameria bloomeri E. K. Balls, Percy C. Everett 1952-10-9 18134 Lassen About Plumas-Lassen county line, Hwy. 89, east of Lake Almanor. 1220 Comment
Read comments
Jul 1 2013
  SEINET195495  Ericameria bloomeri G. Thomas Robbins 1945-10-7 2153 Lassen Lassen National Forest ; Southeast slope of Harvey Mountain 2-3 miles northeast of Burgess Spring Harvey Valley 1829 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
  OBI5655  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley; 3 mi from Wendel on the road to Janesville 1219 Comment
  CAS-BOT-BC294180  Ericameria nauseosa var. speciosa G. Schoolcraft 1987-9-9 1775 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC294181  Ericameria nauseosa var. speciosa R. E. Frenkel 1964-10-1 915 Lassen On California Hwy. 36, 1.0 mile east of California Hwy. 44, west of Susanville 1493 Comment
  CAS-BOT-BC294182  Ericameria nauseosa var. speciosa Margaret Williams 1974-8-4 74 -L-71 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC294183  Ericameria nauseosa var. speciosa Clare B. Hardham 1969-8-28 17426 Lassen West of Janesville Comment
  CAS-BOT-BC294187  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50217 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  UC1136975  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spr. Exp. Range Lassen Forest 1755 Comment
  SEINET8198339 Image available Ericameria parryi var. parryi D. W. Taylor 2002-8-10 18310 Lassen Plumas National Forest Road 24N02X 1.2 air miles from Constantina Road, East slope Diamond Mountains (ca. 4 air miles South of Doyle) 1433 Comment
  CAS-BOT-BC293204  Ericameria suffruticosa Clare B. Hardham 1971-8-22 18393 Lassen Diamond Mountain 2133 Comment
  CDA18270  Erigeron G. D. Barbe 1974-8-2 1935 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA517336  Erigeron aphanactis Barbara Ertter, Gary Schoolcraft 1987-6-16 7176 Lassen Skeeadaddle Mtns on the NE side of Honey Lake. E side of road over saddle on W side of range. 1646 Comment
  CAS-BOT-BC293526  Erigeron aphanactis var. aphanactis Margaret Williams 1974-7-27 74 -L-49 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC33472  Erigeron barbellulatus Milo Samuel Baker; Franklin P. Nutting 1895-7-30 s.n. Lassen Silver Lake Comment
  JEPS80681  Erigeron bloomeri L. R. Heckard and T. I. Chuang 1981-6-10 5532 Lassen North Eagle Lake Campground Eagle Lake (nw corner of lake) 1524 Comment
  SEINET10617399  Erigeron bloomeri David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17790 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC294485  Erigeron bloomeri var. bloomeri John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50676 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CHSC4947  Erigeron bloomeri var. bloomeri R. Carter 1967-6-23 545 Lassen Growing 10 yds off s side rd. Comment
  HSC82194  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6048 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC294905  Erigeron chrysopsidis var. austiniae G. Schoolcraft 1988-6-7 1811 Lassen About 14 air mi. NE of Ravendale 1737 Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline Comment
  CAS-BOT-BC296847  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-16 8340 Lassen Janesville 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
  POM33001  Erigeron divergens Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CAS-BOT-BC295976  Erigeron divergens Peter H. Raven 1963-5-29 18424 Lassen U.S. Highway 395 12.0 miles south of Ravendale Comment
  CHSC60716  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1993-6-14 5515 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
  HSC28860  Erigeron eatonii var. plantagineus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19253 Lassen Harvey Valley near Cone Springs Comment
  JEPS87524  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  CHSC101040  Erigeron elegantulus John Dittes 2008-5-22 1523 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 300 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, rocky volcanic toe-slope on northeast side of Willow Creek. 482 Comment
  CHSC112185  Erigeron elegantulus Dean Wm. Taylor 2012-6-7 21227 Lassen Modoc Plateau. Grass Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139. 1635 Comment
  JEPS2572  Erigeron elegantulus M. S. Baker and F. Nutting 1894-7-5 Lassen Dixey Valley; ; Dixey Valley, Lassen Co. Comment
  SBBG8113  Erigeron inornatus H. and M. Dearing 1938-7-1 2236 Lassen Susanville Comment
  UC485173  Erigeron inornatus var. inornatus T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CAS-BOT-BC295505  Erigeron linearis John Thomas Howell 1934-6-14 12137 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC72299  Erigeron linearis L. P. Janeway; Glenn Clifton 1998-7-9 5729 Lassen Ridgetop saddle 1.0 mi east of Diamond Mtn. 2215 Comment
  UC206218  Erigeron linearis Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  SEINET8667852 Image available Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  SJSU6631  Erigeron philadelphicus var. philadelphicus H. L. Buckalew 1961-7-9 Lassen spring by Blue Lake, Warner Mountains 1920 Comment
  CHSC105241  Erigeron pumilus subsp. intermedius Lowell Ahart; John Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  HSC100803  Erigeron pumilus var. intermedius Lowell Ahart, John Dittes 2010-7-31 16986 Lassen 3,330 ft. N of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1521 Comment
  CHSC116927  Eriogonum J. P. Bergmann 3011-04-30 Lassen Fort Sage OHV Recreation area. 1450 Comment
  UC1409081  Eriogonum baileyi var. baileyi R. F. Thorne and C. W. Tilforth 1969-9-6 39260 Lassen ca. 0.7 mi se along Hwy 395 Milford (w of Honey Lake) 1280 Comment
  CAS-BOT-BC241569  Eriogonum baileyi var. baileyi E. K. Balls; P. C. Everett 1952-10-10 18139 Lassen 5.5 mi. n.e. of Litchfield, Hwy 395, between Susanville and Alturas 1280 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
  OBI48168  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Rav endale 1311 Comment
  RSA616540  Eriogonum cernuum var. cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border Comment
  RSA338584  Eriogonum collinum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9485 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  SEINET5328978  Eriogonum collinum N. H. Holmgren, James Lauritz Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 iles south of Ravendale, Comment
  POM105426  Eriogonum douglasii var. douglasii Marcus E. Jones 1897-7-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS114757  Eriogonum douglasii var. meridionale Lowell Ahart, John Dittes 2008-6-19 14895 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
  UC767811  Eriogonum elatum R. F. Hoover 1940-9-28 4635 Lassen 3 mi ne Susanville Comment
  UCSC005349  Eriogonum elatum Randall Morgan 1998-7-20 3319 Lassen Hwy 144 west of Susanville Comment
  POM105623  Eriogonum elatum var. elatum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC259389  Eriogonum luteolum Ernest C. Twisselmann 1961-9-21 6571 Lassen Harvey Valley Road, ca. 14 miles south of Pitville [Pittville] 1219 Comment
  CAS-BOT-BC263046  Eriogonum maculatum Robert F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  NY430489  Eriogonum marifolium G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mountain 2316.5 Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  CHSC77222  Eriogonum microthecum var. ambiguum G. Schoolcraft 1999-7-28 2871 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  NY282159  Eriogonum microthecum var. laxiflorum R. F. Hoover 1940-9-28 4636 Lassen Canyon north of Leavitt. Comment
  UC85949  Eriogonum microthecum var. laxiflorum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC444002  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mile west of Plinco Mine road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  NY803459  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-8 2947 Lassen About 1 mile south of Constantia, CA west of Highway 395 1421 Comment
  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
  CAS-BOT-BC266366  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True 1973-7-31 50020 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  CHSC68900  Eriogonum nudum var. nudum Vernon Oswald; Lowell Ahart 1997-6-24 8595 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). Along the edge of the road. 1685 Comment
  UCR67381  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M 4 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 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
  SEINET524403  Eriogonum ochrocephalum var. ochrocephalum Paul A. Opler 2003-6-29 Lassen Quarry, 5 mi N of Hallelujah Junction, access road to west of US 295. Comment
  CHSC60839  Eriogonum ovalifolium var. purpureum Vernon H. Oswald; Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. Edge of a vernal pool in a meadow. 1719 Comment
  CHSC45490  Eriogonum spergulinum var. reddingianum Lowell Ahart; John Thomas Howell 1974-7-9 516 Lassen Along the edge of Eagle Lake. 1584 Comment
  HSC30039  Eriogonum spergulinum var. reddingianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19162 Lassen 3 mi. N of Westwood Comment
  POM105341  Eriogonum sphaerocephalum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  SBBG65540  Eriogonum sphaerocephalum S. W. Hutchinson -Jun-1925 858 Lassen near Susanville 1219 Comment
  CHSC110769  Eriogonum sphaerocephalum var. halimioides Dean Wm. Taylor 2012-5-16 21200 b Lassen Modoc Plateau. Ca. 1 air mile S of Stanford Camp (ca. 3 air mi SSE of Big Jack Lake). 1920 Comment
  HSC63565  Eriogonum sphaerocephalum var. halimioides Thomas W. Nelson, Jane P. Nelson 1980-7-6 5998 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 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
  CHSC12967  Eriogonum strictum var. anserinum K. R. Stern 1974-6-26 5865 Lassen E end of Champs flat. Comment
  CHSC25913  Eriogonum strictum var. anserinum K. R. Stern 1967-6-24 2438 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  JEPS107833  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2005-6-2 11984 Lassen North side of the poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.8 miles (air) northwest of Hallelujah Junction 1430 Comment
  UC1924216  Eriogonum strictum var. anserinum Debra Valov 2004-6-9 2004268 Lassen Bieber; off County A2 c. 12 km E of Hwy 299 1270 Comment
  NY283169  Eriogonum strictum var. anserinum A. J. Cronquist 1959-6-17 8473 Lassen 50 miles southeast of Susanville. 1371.6 Comment
  CAS-BOT-BC262769  Eriogonum strictum var. proliferum H. D. Ripley; R. C. Barneby 1943-6-13 5711 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC267898  Eriogonum umbellatum John Thomas Howell 1934-7-6 12436 Lassen Harvey Valley Comment
  SBBG1643  Eriogonum umbellatum H. and M. Dearing 1938-6-30 2235 Lassen 20 mi N of Susanville [Hwy 44] Comment
  CAS-BOT-BC267887  Eriogonum umbellatum Clarence R. Quick 1962-8-3 62 -89 Lassen Delasmutt Ranch, Hw. 44, nr. Susanville-Old Station, along dirt road to Blacks Mt. E.F. Hdqtrs. 1615 Comment
  UC1537274  Eriogonum umbellatum var. modocense Gordon H. True Jr. 1936-6-25 536 Lassen e Harvey Ranger Station; Harvey Valley 1706 Comment
  HSC17447  Eriogonum umbellatum var. modocense J. Wendell Howe 1934-7-9 1295 Lassen Cinder Cone, Lassen NP Comment
  UC85974  Eriogonum umbellatum var. nevadense T. S. Brandegee 1892-6-25 Lassen Honey Lake Comment
  UC6403  Eriogonum ursinum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC262362  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 miles south of Omira Comment
  CAS-BOT-BC262363  Eriogonum vimineum John Thomas Howell 1934-6-10 11893 Lassen Horse Lake Comment
  CAS-BOT-BC262367  Eriogonum vimineum John Thomas Howell 1976-7-19 51952 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CHSC12488  Eriogonum vimineum Carol Weld 1969-6-25 29 Lassen Murrer's Meadow. 1524 Comment
  CHSC6228  Eriogonum vimineum 1943-8-31 Lassen Susanville. Eagle Lake. 1297 Comment
  RSA768781  Eriogonum vimineum L. Ahart, John Dittes 2010-7-31 17018 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
  SEINET14417545  Eriogonum vimineum Robert L. Johnson, Mikel R. Stevens 2015-1 3924 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; South to southwest-facing slope. 1545 Comment
  UC1537299  Eriogonum vimineum Gordon H. True Jr. 1937-7-10 785 Lassen Bull Flat, Game Refuge 1Q 1493 Comment
  UC526153  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 mi s Omira Comment
  UC6518  Eriogonum vimineum M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC262361  Eriogonum vimineum Peter H. Raven; Otto T. Solbrig 1958-6-17 13272 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  HSC69595  Eriogonum vimineum J. Walker 1979-7-18 37 Lassen Near Skedaddle Creek, S portion 1311 Comment
  CAS-BOT-BC261798  Eriogonum wrightii var. subscaposum Clare B. Hardham 1969-8-28 17450 Lassen Slope west of Janesville Comment
  HSC95194  Eriophorum gracile Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 508 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95298  Eriophorum gracile Gordon Leppig, Tony LaBanca 1997-6-29 531 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS34503  Eriophyllum lanatum var. achilleoides L. S. Smith 1918-7-22 1005 Lassen McGaya's ranch Modoc National Forest, Blue Lake (Blue Lake, ne Lassen County) 1828 Comment
  CAS-BOT-BC301390  Eriophyllum lanatum var. grandiflorum R. Carter 1967-6-23 538 Lassen Along rd to Murrer's Meadow 1584 Comment
  CHSC106076  Eriophyllum lanatum var. grandiflorum Lowell Ahart; John Dittes 2010-7-31 17024 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC507013  Eriophyllum lanatum var. integrifolium George A. Fischer and Irwin H. Johnson 1933-7-12 F- 200 Lassen Grass Valley Lassen National Forest, Grass Valley 1697 Comment
  SEINET10673285  Eriophyllum lanatum var. integrifolium Paul Gallian, David B. Dunn 1971-6-2 Gallian 472 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UC1924572  Erodium cicutarium Debra Valov 2006-5-29 2006022 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  JEPS124541 Image available Erodium cicutarium J. Yamanaka 1965-7-12 121 Lassen Highway 395, 15 miles N. of junction of Calif. 704 and US 395 Comment
  UCD103215  Erodium cicutarium P. B. Schultz 1967-7-12 75 Lassen 100 feet east of highway, 1/4 mile west of Willow Creek campground, 14.9 miles southeast of Adin on State Highway 139. 1524 Comment
  SEINET8673719  Eryngium alismifolium Unknown 1958-7-22 5012 Lassen next to Highway 395 , 4.5 miles south of Ravendale Comment
  UC1508836  Eryngium alismifolium Gary Schoolcraft 1984-7-31 1329 Lassen ca. 1 mi. n. Ravendale Fire Station 1615 Comment
  UC648306  Eryngium alismifolium John Thomas Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  CHSC80542  Erysimum repandum Vernon H. Oswald 2001-5-4 9996 Lassen Ash Creek Wildlife Area, Wayman Barn at the west end of Hunt Rd. 1267 Comment
  CAS-BOT-BC55196  Erysimum repandum John Thomas Howell 1934-6-10 11904 Lassen 3 miles south of Ravendale. Comment
  CAS-BOT-BC55198  Erysimum repandum John Thomas Howell 1977-6-23 52397 Lassen Northeast of Susanville on road to Eagle Lake. Comment
  CHSC106222  Erythranthe guttata Arthur C. Barrett 1915-6-3 14 Lassen Laufman Ranger Station. 1463 Comment
  CHSC4929  Erythranthe guttata L. G. Bennett 1967-6-28 54 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC61240  Erythranthe guttata P. V. Caldwell 1972-6-23 244 Lassen Headwaters of Willow Creek, Upper Murer's Meadow, along creek bank. Eagle Lake. Comment
  CHSC71394  Erythranthe inflatula V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9257 Lassen Moll Reservoir in Ash Valley southeast of Adin. Along upper edge of the reservoir. 1615 Comment
  CHSC14065  Erythranthe primuloides J. Grove 1973-7-25 Lassen Collected at Collemans Lake along fill dam of lake. 1524 Comment
  CHSC30559  Erythranthe primuloides Sori H. Shad 1970-6-25 11 Lassen At Deans Meadow. 1828 Comment
  CHSC4974  Erythranthe primuloides D. L. Stites 1967-7-14 168 Lassen 3 mi e of turnoff to Silver Lake on highway 44. 1524 Comment
  CHSC5016  Erythranthe primuloides L. G. Bennett 1967-7-14 173 Lassen 5.3 miles from the juction of Highway 44 and the Silver Lake rd. on Highway 44. 1950 Comment
  CHSC66732  Erythranthe primuloides Vernon H. Oswald; Lowell Ahart 1996-8-1 8124 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 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-BC403147  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-11 7964 Lassen Eastern Fall River Valley Comment
  CHSC6197  Eschscholzia californica R. Gein 1946-6-17 Lassen Horse Lake, near Eagle Lake. 1554 Comment
  JEPS51782  Eschscholzia californica W. L. Jepson 1918-8-2 7774 Lassen Beckwith Pass 1463 Comment
  UC1561401  Eschscholzia californica Barbara Ertter 1987-7-24 7297 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  CAS-BOT-BC312018  Eucephalus breweri Clare B. Hardham 1971-8-22 18390 Lassen Diamond Mountain 2133 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  CHSC5248  Euphorbia crenulata L. Harman 1946-6-23 Lassen Eagle Lake. Near top of Roop Mt. 2133 Comment
  CDA35317  Euphorbia crenulata T. C. Fuller 1962-6-13 8997 a Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  JEPS31883  Eurybia integrifolia Brown and Wieslander 1922-7-30 14 Lassen Martin Springs Eagle Lake Comment
  CAS-BOT-BC312106  Eurybia integrifolia Alice Eastwood 1912-8-22 1883 Lassen Morgans Springs, Lassen Butte Region Comment
  CAS-BOT-BC310645  Euthamia occidentalis Louella Bass 1980-8-29 s.n. Lassen Standish Comment
  CAS-BOT-BC458296  Euthamia occidentalis Louella Bass 1980-8-1 s.n. Lassen Sierra Nevada: Standish Comment
  UCR259111  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak 2409 Comment
  CAS-BOT-BC278429  Festuca idahoensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  RSA0092308  Festuca idahoensis Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31434 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  UC1609257  Festuca idahoensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5585 Lassen 1.2 mi n Hwy. 44 (e side of Grays Valley, e of Poison Lake); Grays Valley 1731 Comment
  UCD65979  Festuca idahoensis L. Whitney 1933-8-10 Lassen Halls Flat. 1737 Comment
  UC53432  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
Read comments
Jun 24 2009
  JEPS71219  Festuca rubra Brown and Wieslander 1922-7-23 80 Lassen Comment
  UC1024944  Festuca rubra Leo Whitney 1935-6-27 3327 Lassen 1 mi n Camp 10, Fruit Grower's Supply Company; Lassen National Forest Comment
  UC963893  Floerkea proserpinacoides Milo S. Baker 1952-5-23 12421 b Lassen e of Chester (along Highway 36); Highway 36 Comment
  HSC21366  Fremontodendron californicum J. J. Wagoner 1965-4-30 49 Lassen 16 mi. W of Child's Meadow, along Hwy. 36 Comment
  CHSC4503  Fremontodendron californicum subsp. californicum C. Glascock 1965-5-15 419 Lassen 12.4 mi. w of Mineral R. S. on Hwy. 36 at n roadside. 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
  RSA367711  Fritillaria atropurpurea Christopher Davidson 1975-6-7 2727 Lassen 2.1 mi W of Westwood on Hwy 36. 1555 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
  CHSC36475  Galium aparine Margaret E. Holloran 1982-6-6 14 Lassen N of Eagle Lake Field Station on a point directly E of Pelican Pt. Comment
  HSC75888  Galium aparine D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19278 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS126534  Galium aparine Lowell Ahart, John Dittes 2016-6-7 21020 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  JEPS127170  Galium aparine Lowell Ahart, John Dittes 2016-7-15 21223 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  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
  UC1523737  Galium bolanderi Lisa Ganio 1981-6-17 24 Lassen Beaver Creek 1280 Comment
  CDA42121  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  UC1561784  Galium multiflorum Barbara Ertter with Gary Schoolcraft 1987-6-16 7175 Lassen ne side Honey Lake (e of road over saddle on w side of range); Skeedaddle Mountains 1645 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
  CHSC46121  Gayophytum diffusum subsp. parviflorum Lowell Ahart; John Thomas Howell 1974-7-9 523 Lassen Along Eagle Lake Road, near the south edge of Eagle Lake. 1584 Comment
  UC1137737  Gayophytum diffusum subsp. parviflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 247 Lassen Lassen National Forest 1767 Comment
  SEINET10453071  Gayophytum diffusum subsp. parviflorum Mary Susan Taylor 1982-8-19 Taylor 5023 Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  UC303066  Gayophytum heterozygum Pearl Safford Lassen Susanville [uncertain locality] Comment
  SEINET10936377  Gayophytum ramosissimum David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17752 Lassen 3 mi s of hallelujah jct on us hwy 395 & calif 70; along roadside and in artemesia-grassland field. Comment
  CAS-BOT-BC217396  Gentiana affinis var. ovata Louella Bass; E. Lagel 1976-9-1 s.n. Lassen Willard Creek near confluence with Susan River, Sierra Nevada Comment
  UC878530  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen about a mi e Westwood 1524 Comment
  POM253026  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen About a mile east of Westwood. 1524 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
  JEPS87404  Gilia capillaris Vernon H. Oswald and Lowell Ahart 1993-6-28 5616 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  CHSC106568  Gilia inconspicua K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  UC1584002  Gilia lottiae G. Schoolcraft 1990-6-12 2085 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); e of Ravendale in Pine Dunes RNA 1706 Comment
  CHSC11771  Gilia modocensis Wayne O. Baum 1971-6-28 71 -4 Lassen S. slope of Gallatin Peak. 2042 Comment
  UC604679  Gilia modocensis Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  RSA104286  Gilia modocensis Verne Grant, Alva Grant 1956-5-17 9796 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  NY1011680  Gilia polycladon G. Schoolcraft 1982-4-29 638 Lassen Amedee Canyon 1372 Comment
  CHSC71242  Gilia sinuata Vernon H. Oswald; Lowell Ahart 1998-6-4 9146 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  UC52853  Gilia sinuata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen near Chat (Honey Lake Valley); , near Chat Comment
  SD135571  Gilia sinuata John Thomas Howell, Gordon H. True, Margaret Williams 1973-5-12 49156 Lassen Janesville, in cemetary. 1295 Comment
  RSA0030654  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen National Forest. Poison Lake. 1700 Comment
  CAS-BOT-BC302596  Gnaphalium palustre Clare B. Hardham 1971-8-22 18421 Lassen Diamond Mountain, north slope 2225 Comment
  CHSC117521  Gratiola ebracteata Lowell Ahart; John Dittes 2016-7-13 21129 Lassen Nortewest edge of the pond, 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC60414  Gratiola ebracteata Mary Ann Showers 1992-6-13 2543 Lassen Shoreline at western end of Widow Lake. Lassen Volcania National Park. 2072 Comment
  UC1533149  Gratiola ebracteata G. Schoolcraft 1986-7-28 1664 Lassen along edge Moll Res. (w of Ash Valley); w of Ash Valley 1606 Comment
  UC1533130  Gymnosteris parvula G. Schoolcraft 1986-5-14 1567 Lassen near road at stateline in Tuledad Canyon Tuledad Canyon 1524 Comment
Read comments
Nov 4 2011
  CHSC114922  Gypsophila paniculata D. B. Joley 1976-6-22 1 Lassen Janesville. Comment
  CHSC118792  Hackelia amethystina L. P. Janeway; B. Castro 2017-7-2 12341 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of Skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  OBI76932  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen Natl forest. Windy Hollow. Pine Crk Valley quad. T31N R8E sec 15 SE of SW 1720 Comment
  UC1587098  Hackelia californica G. Schoolcraft 1991-7-30 2197 Lassen e slope of Widow Mountain 1859 Comment
  CAS-BOT-BC231156  Hackelia cusickii Mrs. A S. Baldwin 1928-5-1 s.n. Lassen Coyote Flat, over ridge from Dixie Village Comment
  CDA3149  Halogeton glomeratus E. E. Fix Jun 1949 Lassen Western Pacific Railroad right-of-way on Nevada-California line. Near Herlong. 0 Comment
  UCR109608  Halogeton glomeratus T. C. Fuller 1962-8-28 9475 Lassen Adjacent to railroad tracks, Herlong Siding 1250 Comment
Read comments
Apr 14 2011
  UCD98894  Halogeton glomeratus Thos. H. Kearney; John Thomas Howell 1951-8-20 28229 Lassen Honey Lake Valley near Herlong. 1280 Comment
  CAS-BOT-BC314767  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  CHSC7647  Helianthus annuus Beverley J. Wise 1948-8-23 21 Lassen 5 mi. N.W. of Susanville of Las. Co. Rd. 201. 1371 Comment
  CAS-BOT-BC305410  Helianthus annuus Verne Grant; Irving Schneider 1947-7-31 8215 Lassen Northeast quarter of George Williams section 19, Madeline Plain Comment
  UC32278  Helianthus annuus Baker and Nutting 1894-7-2 Lassen Comment
  JEPS94088  Helianthus bolanderi Vernon H. Oswald and Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at R.R. overpass on e. side of Nubieber 1255 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
  RSA17683  Helianthus cusickii Elmer I. Applegate 1934-5-4 8927 Lassen South end of Secret Valley Comment
  SJSU14474  Helianthus cusickii W. D. Pitts 1990-5-29 299 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  CAS-BOT-BC305664  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen On the grade east of Mapes on U. S. Highway #395 1371 Comment
  RSA302646  Helianthus cusickii J. R. Shevock 1972-5-20 1818 Lassen Near Johnsonville, Hwy 395. Comment
  CAS-BOT-BC305786  Helianthus nuttallii Herbert L. Mason 1947-8-11 13492 Lassen Highway 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  SD64346  Helianthus nuttallii Darley F. Howe 1966-8-26 4303 Lassen Modoc-Lassen County Line, east of Warner Mountains. 1340 Comment
  UC1483827  Heliotropium curassavicum G. Schoolcraft 1980-7-10 303 Lassen e. shore Eagle Lake 1554 Comment
  CAS-BOT-BC314967  Hemizonella minima John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49201 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  UC1776662  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  CHSC61154  Hesperochiron californicus Vernon H. Oswald; Lowell Ahart 1993-5-12 5377 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood), at a large, meadowy flat covered with dwarf sagebrush and scattered small pines. 1729 Comment
  HSC29978  Hesperochiron californicus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19191 Lassen Harvey Valley near Cone Springs Comment
  CHSC5258  Hesperochiron pumilus J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek near Eagle Lake. 1584 Comment
  JEPS1670  Hesperochiron pumilus G. S. Crew and C. S. Robinson 1927-6-10 11 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  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
  NY1002357  Hesperolinon micranthum G. Schoolcraft 1984-7-30 1324 Lassen About 1 mile east of Post Camp 1707 Comment
  SJSU7861  Hesperolinon micranthum V. Hardham 1965-7-12 127 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou County) on State Rt 139 1463 Comment
  CAS-BOT-BC280679  Hesperostipa comata Margaret Williams; Steven Williams 1974-7-26 74 -L-43 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC593455  Hesperostipa comata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1743 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  UCD85305  Hesperostipa comata P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Comment
  CHSC72301  Heterotheca villosa var. minor L. P. Janeway; Glenn Clifton 1998-7-9 5740 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
  UC1949318  Heterotheca villosa var. minor Barbara Ertter 1987-7-24 7302 Lassen ca 3/4 mi ENE of Bechwourth Pass at end of old crumbling paved road Comment
  NY783486  Heuchera rubescens G. Schoolcraft 1979-6-21 82 Lassen Wendel Canyon 1585.0 Comment
  UC1136852  Hieracium albiflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen <National> Forest 1737 Comment
  UC506909  Hieracium albiflorum George A. Fischer, Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen National Forest 1737 Comment
  CAS-BOT-BC312415  Hieracium albiflorum Alice Eastwood 1912-8-22 1781 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  UC1069594  Hieracium argutum H. P. Hagge 1929-9-18 39 Lassen Logan Mountain Eagle Lake Quad., Logan Mountain Comment
  UC32790  Hieracium horridum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  UC485536  Hieracium horridum Franklin P. Nutting 1984-7-30 Lassen Silver Lake Silver Lake Comment
  SEINET11262512  Hieracium nudicaule Robert L. Johnson, Mikel R. Stevens 2015-7-10 3938 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1564 Comment
  UC897899  Hieracium nudicaule A. A. Heller 1938-7-28 15301 Lassen about a mi e Westwood (edge of s swamp) 1524 Comment
  JEPS105682  Hieracium scouleri L. P. Janeway 2001-6-20 7196 Lassen along 22 Road about 1.8 km W of Black Hole, about 11.9 km N-NE of Harvey Mountain 460 Comment
  UC92036  Hieracium scouleri unknown 1892-6-28 Lassen Janesville Comment
  CHSC87105  Hieracium scouleri var. scouleri L. P. Janeway 2001-6-20 7196 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1510 Comment
  SEINET10685375  Holodiscus microphyllus var. glabrescens Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 150 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  POM91032  Holodiscus microphyllus var. glabrescens Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC71232  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald; Lowell Ahart 1998-6-4 9140 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 Comment
  CHSC75571  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald; Lowell Ahart 1999-6-9 9751 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Along a drainage below the dam of the reservoir. 1353 Comment
  UC1100324  Hordeum brachyantherum subsp. brachyantherum Malcolm A. Nobs, S. Galen Smith 1949-7-21 1055 Lassen 4 mi N of Madelaine Comment
  CHSC7694  Hordeum jubatum Beverley J. Wise 1969-6-4 131 Lassen 10 mi. east of Susanville on Hwy 395, Janesville cut in Hwy. 1310 Comment
  CHSC84869  Horkelia fusca subsp. tenella L. P. Janeway; B. Castro 2003-10-5 8007 Lassen High Cascade Range. Cone Lake and trailhead parking area (trail 1.3 km southwest into Caribou Wilderness Area). Around meadows and ponds. 2055 Comment
  JEPS28711  Horkelia fusca subsp. tenella George W. Gillett 1957-7-29 942 Lassen 1/4 mi above Butte Lake (Along trail between Butte Lake and Snag Lake); Lassen Volcanic National Park 1859 Comment
  JEPS44570  Horkelia fusca subsp. tenella Brown & Wieslander 1922-7-23 30 Lassen Martin Sprs., Eagle Lake Comment
  UC860563  Horkelia tridentata subsp. tridentata C. L. Hitchcock 1940-5-26 6597 Lassen ca 12 mi n Fall River (on Fall River) Comment
  CAS-BOT-BC55477  Hornungia procumbens Arnold Tiehm; Margaret Williams; Gary Schoolcraft 1986-5-12 10350 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  CHSC66387  Hosackia oblongifolia var. oblongifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7818 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marshy pool at the 6.0 mile post of Devils Corral Trailhead. 1420 Comment
  NY170060  Hutchinsia procumbens A. Tiehm 1980-5-29 5749 Lassen N end of Honey Lake Valley, just N of Hot Springs, 1.1 air mi NNW of Wendel. 1231.4 Comment
  CHSC21234  Hydrophyllum capitatum var. alpinum F. Tom Griggs; Robert A. Schlising 1974-5-30 3135 Lassen West side of Colman Lake, at margins of meadow. 1950 Comment
  UC1069096  Hydrophyllum capitatum var. alpinum A. Simontacchi 1940-5-10 692 Lassen 4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1951069  Hydrophyllum capitatum var. alpinum Debra Valov 2009-4-27 2009023 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET5518818  Hydrophyllum occidentale var. watsonii C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  NY170062  Hymenolobus procumbens A. Tiehm 1986-5-12 10350 Lassen 1 road mi W of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CHSC118790  Hymenoxys cooperi L. P. Janeway; B. Castro 2015-6-5 11756 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
  POM66398  Hymenoxys lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CHSC41841  Hypericum formosum var. scouleri P. V. Caldwell 1972-7-13 271 Lassen Eagle Lake. Growing scattered on edge of upper Papoose Creek above forest road to Papoose Meadows. Comment
  CAS-BOT-BC401308  Hypericum scouleri Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  HSC69298  Idahoa scapigera Gary Schoolcraft 1980-4-8 203 Lassen E side of Schaffer Mtn., 0.25 mi. W of Hwy. 395 1463 Comment
  SEINET10904184  Idahoa scapigera David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17766 Lassen Approx. 12 Mi. S. Of adin on ca. Hwy 139, in basalt and clay; along edge or rd. On rolling knoll, in artemesia juniper assoc. 1372 Comment
  NY52523  Iliamna bakeri G. Schoolcraft 1983-8-3 1129 Lassen 5 miles w of Madeline 1767.8 Comment
  HSC63937  Ipomopsis aggregata Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak. alongside rd. to lookout 2317 Comment
  CHSC107328  Iris hartwegii subsp. hartwegii Lowell Ahart; John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley. 1264 Comment
  CDA34397  Isatis tinctoria E. Finley 1986-6-18 Lassen Near Nubieber, U.S. 299. 0 Comment
  UC2062875  Isoetes nuttallii Forrest Freund 2016-5-18 256 Lassen Side of Highway 44. Comment
  HSC28862  Iva axillaris D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19298 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  HSC5876  Iva axillaris M. T. Milligan 1964-8-6 203 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  SD64329  Iva axillaris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395. 1675 Comment
  NY833699  Ivesia baileyi G. Schoolcraft s.n. Lassen In Wendel Canyon 1585 Comment
  UC2062433  Ivesia baileyi var. baileyi Barbara Ertter with Gary Schoolcraft 1987-6-16 7200 Lassen Skeedaddle Mountains on NE side of Honey Lake; tuffaceous at head of Wendel Canyon. Comment
  CHSC64852  Ivesia paniculata Vernon H. Oswald 1995-6-26 6947 Lassen Modoc Plateau. Coyote Flat on Hunzinger Flat Rd. (FS 38N04) 5.6 mi s of its junction with Ash Valley Rd. (Lassen 527). 1783 Comment
  HSC77272  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin, 16.25 mi. W of Madeline 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
  UC1567359  Ivesia paniculata G. Schoolcraft 1980-7-14 306 Lassen w of Madeline; Ash Valley 1548 Comment
  CAS-BOT-BC109935  Juncus John Thomas Howell 1976-7-19 51988 Lassen Sierra Nevada. On Gold Creek southwest of Susanville. 1386 Comment
  CHSC30562  Juncus balticus Sori H. Shad 1970-7-1 5 Lassen Found on the side of spring above Gallaten Beach. 2438 Comment
  UC648318  Juncus balticus Leo Whitney 1934-8-2 1970 Lassen Bridge Creek Camp Lassen National Forest 1737 Comment
  JEPS121285  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2013-7-23 18907 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS96127  Juncus bufonius var. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-24 7838 Lassen ca 0.5 mi s Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC66416  Juncus dudleyi Vernon H. Oswald; Lowell Ahart 1996-6-17 7817 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the edge of a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CHSC13585  Juncus ensifolius J. Pitts 1972-6-22 254 Lassen 140 yds. ne of Eagle Lake Field Station above marsh. Comment
  RSA201304  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UC1100948  Juncus mexicanus Malcolm A. Nobs and S. Galen Smith 1947-8-1 8230 Lassen irrigation ditch running sw into State Fish & Game nesting area on w end of Section 19 Madeline Plain Comment
  HSC95312  Juncus nevadensis Gordon Leppig 1998-8-17 1041 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95327  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1601786  Juncus nevadensis Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
Read comments
Jul 3 2013
  CHSC117212  Juncus tiehmii Lowell Ahart; John Dittes 2016-6-7 20989 Lassen West edge of pond, near spillway 5 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
  SBBG126190  Juncus trilocularis P. F. Zika 2008-7-14 23893 Lassen S side of St Hwy 44, SE end of Grays Valley near Lodgepole 1730 Comment
  CHSC13798  Juniperus occidentalis Cathy Crittenden 1970-7-8 26 Lassen About 300 yds. From five corners on road to Mahogany Lake. 1767 Comment
  RSA78920  Juniperus occidentalis E. K. Balls, P. C. Everett 1952-10-10 18141 Lassen 8 mi SE of ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UCR164308  Juniperus occidentalis Maile Neel 2000-4-29 G- 3 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10859617  Juniperus occidentalis Leila M. Shultz, John S. Shultz 1985-6-23 Shultz 8601 Lassen 41 miles north of Susanville on highway 395. Dark basaltic soils. Western Juniper-sagebrush-bitterbrush association. 1435 Comment
  SEINET10966161  Juniperus occidentalis Mary Susan Taylor 1974-5-4 Taylor 217 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
  UCR1818  Juniperus occidentalis subsp. australis Frank C. Vasek 1962-9-3 620903- 04 Lassen Calif. Hwy 36, 3.6 mi west of the Ranger Station, west of Susanville 1524 Comment
  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
  UC567069  Juniperus osteosperma C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ene Chats 1569 Comment
  SEINET11064452  Juniperus osteosperma D. Charlet 1993-7-13 1581 Lassen Fort Sage Mountains at OHV trailhead. 1490 Comment
  CHSC57200  Kelloggia galioides Mary Meyer 1980-7-21 Lassen Beneath white fir stand. 2103 Comment
  CHSC6262  Kelloggia galioides W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 Comment
  JEPS12481  Kelloggia galioides Brown and Wieslander 1922-7-18 53 Lassen near Susanville (Martins Springs); Martins Springs Comment
  JEPS97366  Kelloggia galioides Vernon H. Oswald and L. Ahart 1995-7-24 7133 Lassen T31N R7E ca. center of N side of Sec. 23, 6400 ft, High Cascade Range, Red Fir Forest. 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
  UC1136815  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-8-3 F 278 Lassen Lassen Forest, <Lassen National Forest> 1737 Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  CAS-BOT-BC271327  Koeleria pyramidata Louella Bass 1973-6-3 92 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC271331  Koeleria pyramidata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CHSC66719  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1996-8-1 8116 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  UCD133500  Lactuca tatarica subsp. pulchella W. L. Jepson 1918-8-2 s.n. Lassen lower bench of Long Valley Creek. Beckwith Pass. 1463 Comment
  JEPS114639  Lamium amplexicaule Lowell Ahart, John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC64767  Lappula redowskii var. cupulata Vernon H. Oswald 1995-5-24 6767 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  JEPS120809  Lasthenia glaberrima Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen Near a drainage filled with dirt from construction of a pond, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley Comment
  RSA0042601  Lasthenia glaberrima Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen About 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  SEINET10543694  Lathyrus David B. Dunn 1971-6-2 Dunn 17753 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc. 1372 Comment
  UC81780  Lathyrus brownii unknown 1892-7-2 Lassen Susanville Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  POM277812  Lathyrus sulphureus Lyman Benson 1932-5-14 3584 Lassen Coarsegold 549 Comment
Read comments
Jul 2 2013
  CHSC106572  Layia glandulosa Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC106679  Layia glandulosa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  JEPS94833  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1998-5-22 9109 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  UC1567443  Layia glandulosa G. Schoolcraft 1989-5-31 1884 Lassen 3 mi n Wendel road (along Skedaddle Rch. Road) 1463 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
  SEINET10759252  Layia glandulosa Jeffrey Huber 1971-6-2 Huber 143 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  POM361661  Layia glandulosa subsp. glandulosa Christopher Davidson 1975-6-7 2752 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC4847  Lemna minor R. Carter 1967-7-13 590 Lassen Along shore of Willow Creek. Comment
  JEPS114851  Lemna minuta Lowell Ahart, John Dittes 2008-6-22 15022 Lassen On shallow water, south side of the levee, about 50 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
  SFV1437  Lepidium appelianum I. L. Wiggins, D. B. Wiggins 1961-6-16 16529 Lassen 4.1 miles east of Bieber. 1265 Comment
  CHSC64873  Lepidium perfoliatum Vernon H. Oswald; Lowell Ahart 1995-6-19 6899 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Near the road. 1383 Comment
  UC1143000  Lepidium perfoliatum August L. Hormay 1934-5-15 Lassen nw of Black Mt.; Lassen National Forest, Forest and Range Expt. Sta. 1584 Comment
  UCR73174  Lepidium perfoliatum G. L. Webster 1989-5-13 7713 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  NY90026  Lepidium perfoliatum D. B. Dunn 1971-6-2 17749 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, Junction of US 395 and California 70 Comment
  JEPS53770  Lepidium virginicum var. virginicum W. L. Jepson 1918-8-2 7763 Lassen Beckwith Pass 1463 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
  UCR17290  Leptodactylon pungens Frank C. Vasek 1975-7-11 750711- 16 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  RSA713121  Leptosiphon ciliatus L. P. Janeway, B. Castro 2005-7-10 8480 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 & 28N02) and Road 28N01. 1859 Comment
  CHSC60758  Leptosiphon harknessii Vernon H. Oswald; Lowell Ahart 1993-6-14 5516 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
  POM74198  Leptosiphon harknessii Marcus E. Jones 1897-6-24 10397 Lassen 10 to 15 miles west from Amedee. 1220 Comment
  POM364710  Leptosiphon harknessii J. T. Howell 1934-6-10 11844 Lassen Near Plumas Junction Comment
  JEPS61979  Leucocrinum montanum Leland S. Smith 1927-6-25 25 Lassen Lassen National Forest 1706 Comment
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  OBI48150  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  OBI83366  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  SEINET12044967  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek 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
  UC803946  Leymus G. L. Stebbins Jr., P. Dansereau, K. Narayan, and C. McMillan 1949-8-6 4006 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  UC188958  Leymus cinereus Milo S. Baker Lassen Dixie Valley Comment
  UC70685  Leymus cinereus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  RSA129541  Leymus condensatus C. W. Hanks 1934-8-18 57 Lassen Sierraville; N. W. part of Upper Long Valley 1616 Comment
  CAS-BOT-BC274466  Leymus triticoides John Thomas Howell 1974-7-8 50467 Lassen Susanville 1295 Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  RSA0035910  Lilaea scilloides Lowell A. Ahart, John Dittes 2008-6-20 14943 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
  CHSC54871  Limosella acaulis Vernon H. Oswald 1991-9-23 4878 Lassen Butte Lake in the northeast corner of the park. Lassen Volcanic Park. 1841 Comment
  CHSC60855  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1993-6-28 5602 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UCR228120  Limosella aquatica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47205 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
  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
  UC1025087  Linanthus harknessii Leo Whitney 1934-7-5 1788 Lassen ca 15 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Crater Mountain 2225 Comment
  UC1025096  Linanthus harknessii Leo Whitney 1934-5-27 1639 Lassen near Crater Lake 1828 Comment
  UC1124083  Linanthus harknessii A. Simontacchi 1940-5-28 787 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  SEINET10902894  Linanthus harknessii Mary Susan Taylor 1974-1 Taylor 290 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC79186  Linanthus pungens L. P. Janeway 2000-6-24 6838 Lassen Northern High Sierra Nevada. Volcanic promontory on south edge of the top of Crystal Peak. 2371 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
  RSA715980  Linum lewisii L. Ahart, John Dittes 2005-6-2 11935 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  RSA123903  Linum lewisii G. A. Fischer, Irwin H. Johnson 1933-7-14 F 264 Lassen Lassen Forest. Slope S. 2 deg. 1768 Comment
  CHSC4431  Linum lewisii var. lewisii K. R. Stern 1967-7-1 2472 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  CHSC4888  Linum lewisii var. lewisii Bill Wilson 1967-7-1 7 Lassen Collected on Rd. #5.00, 2.5 mi. S of Eagle Lake Biological Station. 8 mi. N of Susanville. 1645 Comment
  CHSC61430  Linum lewisii var. lewisii Vernon H. Oswald; Lowell Ahart 1993-8-18 5832 Lassen Lassen Volcanic National Park. Summit ridge of Mt. Conard, near the S boundary of the park. Common in loose rock approaching the highest point on the ridge from the north. 2484 Comment
  CHSC80221  Linum lewisii var. lewisii Jeanne Boze 1981-6-12 110 Lassen Along road to 5 corners, 3.1 from Eagle Lake Field Station. 1737 Comment
  CHSC91299  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2005-6-2 11935 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
  JEPS107872  Linum lewisii var. lewisii Lowell Ahart, John Dittes 2005-6-2 11935 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
  JEPS114694  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
  RSA0035912  Linum lewisii var. lewisii Lowell A. 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
  POM111784  Lipocarpha micrantha C. C. Bruce 1897-1 s.n. Lassen Susanville? Comment
Read comments
Jan 23 2011
  CHSC60688  Lithophragma glabrum Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5273 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CHSC29956  Lithophragma tenellum Robin L. Ondricek 1978-5-25 25 Lassen 150 yds N of cafeteria at Eagle Lake Field Station. 1554 Comment
  JEPS47671  Lithophragma tenellum Milo S. Baker 1890-1 Lassen Milford Comment
  UC1127235  Lithophragma tenellum A. Simontacchi 1940-5-10 693 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  JEPS107869  Lithospermum ruderale Lowell Ahart, John Dittes 2005-6-2 11932 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC506915  Lithospermum ruderale George A. Fischer and Irwin H. Johnson 1933-7-19 F 262 Lassen Lassen; Sec. 2 1783 Comment
  UCR73173  Lomatium G. L. Webster 1989-5-13 7718 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  SEINET8588616  Lomatium austiniae S. Jesselson, A. Ortega, J. White, A. Rosenblum 2015-5-28 NV 030 -1064 Lassen Plumas allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line. 1547 Comment
  CHSC1962  Lomatium bicolor J. Wakeman 1963-5-11 Lassen Bieber. Comment
  JEPS15825  Lomatium bicolor var. leptocarpum M. S. Baker and Franklin P. Nutting 1894-6-20 Lassen near Bieber (Big Valley); Big Valley Comment
  RSA27417  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC29900  Lomatium dissectum var. multifidum Robin Ondricek 1978-6-8 44 Lassen Ridge E of Lower Dry Lake in area between basalt and loam. 1767 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
  SEINET8584736  Lomatium foeniculaceum subsp. macdougalii W. Harnach 2010-6-8 1243 Lassen 2 miles west of the California Nevada state line, north side of Fort Sage Road, northeast of Doyle, CA. 1219 Comment
  CHSC65245  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen In rocky areas along U.S. Hwy. 395, 9.5 mi. north of Madeline. 1490 Comment
  CHSC67146  Lomatium macrocarpum James D. Jokerst 1991-5-29 3308 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  JEPS17107  Lomatium macrocarpum T. Brandegee 1892-6-23 Lassen Honey Lake Comment
  UC1483807  Lomatium macrocarpum G. Schoolcraft 1980-4-30 214 Lassen N of Shaffer Mountain 1365 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
  CHSC101028  Lomatium nevadense var. nevadense John Dittes 2008-5-22 1540 Lassen Modoc Plateau; ca 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca. 465 feet east of intersection of Hwy 139 and FS Road 36N02. 483 Comment
  UC1567383  Lomatium nevadense var. nevadense G. Schoolcraft 1989-5-3 1864 Lassen near Karlo (n.w. corner Secret Valley); Secret Valley 1356 Comment
  CAS-BOT-BC217794  Lomatium ravenii H. D. Ripley; R. C. Barneby 1944-5-30 5973 Lassen South of Ravendale 1676 Comment
  NY406056  Lomatium ravenii L. Constance 1959-6-14 3672 Lassen One mile south of Ravendale 1463.0 Comment
  UC1187686 Image available Lomatium ravenii Tracey and Viola Call 1961-5-30 2048 Lassen ca. 2 mi. s. Ravendale 1463 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
  CHSC112137  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21244 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 air miles S of Adin). 1722 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
  CHSC117768  Lomatium vaginatum L. P. Janeway; B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  UC1390555  Lomatium vaginatum Maynard Moe Aug 1970 278 Lassen about 0.6 mi S of Madeline (Hwy 395) 1615 Comment
  JEPS126486  Lotus corniculatus Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-16 CA 350 -050 Lassen Take Smoke Creek Road to Sand Pass Road. Turn left at Parker Reservoir. Comment
  JEPS87400  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5608 Lassen 1.5 mi ne of Aspen Well (n of Hwy 44 on Harvey Rd One (34N27), n of Harvey Valley, ne of Poison Lake); Harvey Rd One 1761 Comment
  JEPS117484  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2010-7-31 16999 Lassen On the north side of the road, about 15 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC507000  Lotus purshianus var. purshianus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 193 Lassen Grass Valley Lassen Forest 1694 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
  RSA715662  Lotus unifoliolatus L. Ahart 2005-6-2 11970 -A Lassen 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. 1409 Comment
  CHSC110911  Ludwigia palustris Lowell Ahart; John Dittes 2012-7-9 18291 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS127169  Ludwigia palustris Lowell Ahart, John Dittes 2016-7-15 21220 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  JEPS64900  Lupinus angustiflorus Brown and Wieslander 1922-7-23 61 Lassen Martin Springs , Martin Springs (Eagle Lake) Comment
  UC126936  Lupinus angustiflorus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Leke Silver Lake Comment
  CHSC30623  Lupinus arbustus John Steiner 1975-7-10 21 Lassen Road 5a, .4 mi N. Mahogany Lake. 2072 Comment
  CHSC37703  Lupinus arbustus M. S. Taylor 1982-8-27 5051 Lassen Crystal Peak, Diamond Mt, 6 air mi sw of Doyle. 2377 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  SEINET10490460  Lupinus arbustus subsp. arbustus Katherine L. Morris 1973-5-25 Morris 211 Lassen 9.6 miles n of milford on us 395 in an area covered with artemisia, purshia, And rabbit bush Comment
  SEINET10903629  Lupinus arbustus subsp. arbustus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2590 Lassen Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville, assoc.; Purshia, artemisia 1311 Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  CAS-BOT-BC208728  Lupinus argenteus var. heteranthus F. Payne 1929-7-12 74 Lassen Lost Lake, Warner Mts. 2286 Comment
  CAS-BOT-BC208738  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21510 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CAS-BOT-BC208755  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21511 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 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
  JEPS107302  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2005-6-1 11873 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, 3.8 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS94125  Lupinus argenteus var. heteranthus Vernon H. Oswald and Lowell Ahart 1998-5-22 9094 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  NY736926  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Along U.S. Highway #395 just outside of Johnstonville. Upper Sonoran Life Zone Comment
  UC1191476  Lupinus argenteus var. heteranthus Verne Grant, Irving Schneider 1947-8-1 8232 Lassen Madeline Plain; irrigation ditch running sw into State Fish and Game nesting area on w end of S19 Comment
  UC83091  Lupinus argenteus var. heteranthus T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  UCR270692  Lupinus argenteus var. heteranthus John F. Emmel 1999-6-5 1631 Lassen Honey Lake Basin, north end of Fort Sage Mountains, east base of Turtle Mountain 1280 Comment
  JEPS107915  Lupinus argenteus var. meionanthus Lowell Ahart, John Dittes 2005-6-2 11937 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  SEINET10969898  Lupinus brevicaulis David B. Dunn 1956-7-3 Dunn 11916 Lassen Coll. On a dry rocky slope with only an occasional juniper, considerable Artemisia tridentata. N side of the alkali flats, 31 mi. Ne of johnstonville On hwy 395. Comment
  POM253163  Lupinus caudatus A. A. Heller 1938-6-23 15203 Lassen Along U.S. Highway 395 just outside of Johnstonville. Comment
  RSA39736  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford. 1265 Comment
  RSA59517  Lupinus caudatus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 miles from junction of Highway 36 and 395. 1250 Comment
  SEINET10490608  Lupinus caudatus subsp. caudatus Jeffrey Huber 1971-6-2 Huber 145 Lassen 6 mi. N of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  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
  JEPS81671  Lupinus lepidus var. confertus L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1968-8-12 2118 Lassen around Honey Lake just n Milford; Honey Lake just n of Milford 1310 Comment
  SEINET5332986  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy 395, ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC764829  Lupinus lepidus var. confertus R. F. Hoover 1940-10-1 4653 Lassen Janesville 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
  HSC103510  Lupinus lepidus var. sellulus Thomas W. Nelson, Jane Nelson 1986-6-23 8144 Lassen Along State Route 44, 10.9 mi. from Old Station junction. 1585 Comment
  CHSC5287  Lupinus leucophyllus 1944-7-2 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  CHSC60830  Lupinus leucophyllus Vernon H. Oswald; Lowell Ahart 1993-6-28 5607 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  NY747428  Lupinus microcarpus G. Schoolcraft 1984-7-11 1291 Lassen About 5 miles south of Madeline along Highway 395 1615 Comment
  JEPS114708  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  NY747487  Lupinus nevadensis B. J. Cox 1971-6-2 2595 Lassen Hallelujah Jct. intersection of U.S. 395 and Calif. Hwy 70 1433 Comment
  NY747489  Lupinus nevadensis G. Schoolcraft 1986-4-28 1526 Lassen Lower W. slopes of Fort Sage Mountains 1433 Comment
  UC725891  Lupinus onustus A. A. Heller 1940-5-22 15662 Lassen above Westwood Cemetary; above the Westwood Cemetary 1524 Comment
  UC138031  Lupinus onustus T. S. Brandegee 1892-7-2 Lassen Susanville 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
  UC16006  Lupinus polyphyllus var. burkei Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  UC1523758  Lupinus saxosus Gary Schoolcraft 1983-6-7 968 Lassen near Ash Valley 1706 Comment
  SEINET10490228  Lupinus sellulus var. artulus Katherine L. Morris 1973-5-25 Morris 233 Lassen Collected 7.6 mi nw of jct of hwy 36 and 44 on hwy 44, in an area of yellow Pine and incense cedar. Very moist area. Comment
  SEINET10485916  Lupinus sellulus var. lobbii Duane Isely, I. Isely 1971-7-12 Isely 11383 Lassen Ca 1 mi from state #44, road to bogard campground, lassen national forest (30 Mi nw of susanville). Sagebrush opening in woodlands; fugitive against rocks Or by sagebrush; arising from vertical rhizones from subterranean caudex; Corolla dull mauve; keel tip light. 1676 Comment
  UC429126  Luzula comosa var. laxa Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake Valley. Comment
  JEPS121287  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA0105576  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 Lassen About 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CDA18272  Machaeranthera canescens G. D. Barbe 1974-8-2 1937 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA518416  Machaeranthera canescens var. canescens George K. Helmkamp 1990-9-23 G- 8 Lassen N of Ravendale 1677 Comment
  SFV7754  Madia citrigracilis T. Gordon, K. Kimbrough 1975-8-15 1214 Lassen 16 miles south of Adin. 1402 Comment
  CHSC4904  Madia elegans Bill Wilson 1967-7-15 163 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  SEINET11601319 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  SEINET11601338 Image available Madia elegans J. A. Young 1983-8-4 s.n. Lassen Janesville Comment
  CAS-BOT-BC343698  Madia elegans Margaret Williams; Louella Bass 1972-10-22 EV 7 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  UCD134225  Madia elegans Malcolm A. Nobs; Galen Smith 1949-8-20 1470 Lassen Honey Lake Valley, 1 mile south of Milford. Comment
  CHSC29911  Madia glomerata Robin L. Ondricek 1978-8-26 126 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  UCD134274  Madia glomerata J. M. Tucker 1950-7-25 1975 Lassen road from Pittville, 33 miles northwest of Susanville. Comment
  CAS-BOT-BC343062  Madia gracilis Clare B. Hardham 1969-8-28 17460 Lassen Slope west of Janesville Comment
  CHSC66376  Madia gracilis Vernon H. Oswald; Lowell Ahart 1996-6-17 7783 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  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
  RSA715984  Madia minima L. Ahart, John Dittes 2005-6-2 11940 Lassen About 1 1/2 miles northeast of the Anderson Ranch Home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  UC1567438  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi N Wendel Road, along Skedaddle Ranch Rdoad. 1493 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
  CAS-BOT-BC179097  Malva neglecta Mrs. H. C. Cantelow 1940-5-31 4011 Lassen E. of Bieber Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  RSA0011558  Marsilea vestita R. F. Thorne, Larry E. DeBuhr 1975-8-22 46994 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC71221  Matricaria discoidea Vernon H. Oswald; Lowell Ahart 1998-6-4 9138 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 Comment
  CHSC91314  Matricaria discoidea Lowell Ahart; John Dittes 2005-6-1 11895 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
  JEPS114749  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, 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
  CHSC93666  Medicago lupulina Lowell Ahart; John Dittes 2005-6-2 11966 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  UC584328  Melica bulbosa G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2283 Lassen e slope and summit Diamond Mt. 2194 Comment
  UC972185  Melica fugax Milo S. Baker 1952-5-23 12427 Lassen e of Chester (Highway 36) 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
  CHSC11769  Melica stricta Wayne O. Baum 1971-7-5 71 -3 Lassen E. slope of Gallatin Peak. 2011 Comment
  UC1024648  Melica stricta Leo Whitney 1933-8-3 2206 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UCD88494  Melica stricta L. Whitney 1933-8-1 s.n. Lassen Near Slate Creek. 1920 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
  SJSU11391  Mentha arvensis J. W. Tilden 1960-6-27 1521 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 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
  HSC30084  Mentzelia albicaulis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19295 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC1609443  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-14 5536 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  UCD55287  Mentzelia albicaulis Ellen Dean; Gary Schoolcraft 2006-5-16 3106 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. 1244 Comment
  CHSC91323  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
  JEPS87411  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  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
  JEPS124811 Image available Mentzelia laevicaulis J. Yamanaka 1965-7-12 120 Lassen Highway 395, 15 miles N. of junction of Calif. 104 US 395. Comment
  RSA17725  Mentzelia laevicaulis Elmer I. Applegate 1921-9-4 3344 Lassen Susanville. Comment
  JEPS42757  Mentzelia montana W. L. Jepson 1918-8-2 7773 Lassen Beckwith Pass 1463 Comment
  SEINET194902  Mentzelia pinetorum A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. Transition Life Zone. 1524 Comment
  CHSC21230  Menyanthes trifoliata Robert A. Schlising 1974-6-20 3146 Lassen Murrers Upper Meadow, about 2.5 miles east of Eagle Lake Field Station, on the east side of Eagle Lake. Comment
  JEPS95161  Mertensia ciliata Vernon Oswald and Lowell Ahart 1997-6-24 8617 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  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
  CHSC68767  Micranthes nidifica Vernon H. Oswald; Lowell Ahart 1997-5-27 8499 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 margin of the flood plain of a small creek paralleling the road. 1546 Comment
  SD8330  Micranthes odontoloma Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
Read comments
Apr 29 2013
  CAS-BOT-BC429183  Micranthes oregana John Thomas Howell 1934-7-9 12516 Lassen Bridges Creek Spring Comment
  CHSC99295  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-20 14951 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114755  Microseris laciniata subsp. laciniata Lowell Ahart, John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest 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
  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
  UC450131  Microseris nutans Franklin P. Nutting Lassen s side Dixie Mt. Comment
  CAS-BOT-BC349299  Microseris nutans Elmer I. Applegate 1929-6-21 5778 Lassen Kelly's Camp, Warner Valley, Mt. Lassen region Comment
  UCD55154  Microsteris gracilis Ellen Dean 2006-5-15 3042 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  RSA122925  Microsteris gracilis subsp. humilis L. R. Short, Wm. Gansberg 1936-6-2 S- 363 Lassen Lassen [National] Forest. MDM, Burgess Spr. Exp. Range 1860 Comment
  RSA104219  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9803 Lassen Hills between Madeline and Likely 1524 Comment
  RSA104221  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9801 Lassen 4 miles S of Ravendale. 1280 Comment
  UCD122430  Mimulus breviflorus S. E. Schoenig 1998-7-5 98- 71 Lassen East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track. 1749 Comment
  CHSC118485  Mimulus evanescens Allison Sanger; Loren Gehrung 2003-6-11 Lassen Lassen National Forest. Eagle Lake Ranger District. Near Rankin Flat west of Spalding, roughly 1.2 air miles west of Eagle Lake marina. 1822 Comment
  JEPS23736  Mimulus inflatulus Rimo Bacigalupi with S. Galen Smith 1957-6-28 5998 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  JEPS2648 Image available Mimulus jepsonii W. L. Jepson 1910-6-10 4112 Lassen Twin Lakes (Grassy Lake); ; Twin Lakes (Grassy Lake), Lassen Co. 2225 Comment
  UCR259342  Mimulus latidens Glenn L. Clifton 1996-6-18 34671 Lassen Highway 395 at Mud Flat [c. 10 miles due north of Honey Lake] 1348 Comment
  UC1523772  Mimulus moniliformis Gary Schoolcraft 1981-6-25 475 Lassen Comment
  RSA411323  Mimulus nanus var. jepsonii Christopher Davidson 1974-7-25 2499 Lassen Lassen Volcanic Nat. Park. At Juniper Lake. 2134 Comment
  HSC22960  Mimulus nanus var. mephiticus John Pratt 1970-7-11 76 Lassen At base of Dyer Mtn lookout tower. Comment
  LA38975  Mimulus nanus var. mephiticus Frank W. Peirson; 1926-6-24 6853 Lassen Madeline Plain Comment
  UC1561980  Mimulus nanus var. mephiticus Barbara Ertter with Gary Schoolcraft 1987-6-16 7197 Lassen saddle on e side Hot Springs Peak (on ne side of lake); Skeedaddle Mountains, Honey Lake 2194 Comment
  HSC81185  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA59745  Mimulus nanus var. nanus N. N. Thompson 1950-5-19 14786 Lassen 16.5 mi. W of Madeline on rd. from Adin. 1677 Comment
  JEPS11060  Mimulus primuloides Brown and Wieslander 1922-7-30 27 Lassen Martin Springs Eagle Lake Comment
  RSA536391  Mimulus pygmaeus Beth Corbin 1991-6-10 621 Lassen Pine Creek at Little Harvey Valley 8 miles NE of USFS Bogard Work Center. 1700 Comment
  RSA536393  Mimulus pygmaeus Rick Crowther 1991-5-28 s.n. Lassen Swains Hole Reservoir, 3 miles N of Hwy 44 off USGS Road 33N18. 1619 Comment
  RSA536398  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-7-2 634 Lassen 0.25 mile SE of Robbers Spring, 70 ft SSW of Hwy 44, 3.5 miles NW of USFS Bogard Work Center. 1098 Comment
  RSA152664  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  SEINET12319571  Monardella odoratissima J. D. Prouty 1978-1 33 Lassen NW side of Eagle L., Pine Creek just upstream of fish trap on S bank, T32N R10E Sec1 1561 Comment
  CAS-BOT-BC221973  Monardella odoratissima subsp. glauca Alice Eastwood; John Thomas Howell 1940-6-15 8328 Lassen Round Valley Comment
  GMDRC6951  Monardella odoratissima subsp. glauca J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31425 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  RSA83362  Monardella odoratissima subsp. glauca F. W. Peirson 1926-6-24 6850 Lassen 2-3 miles southward from the Madeline Plain Comment
  CHSC27651  Monardella odoratissima subsp. pallida N. E. Heiken 1978-7-27 94 Lassen Beneath Pine Creek Birdge, just W of fish trap. 1560 Comment
  CHSC29873  Monardella odoratissima subsp. pallida Robin L. Ondricek 1978-6-27 74 Lassen 1977 Burn, .1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  CHSC5271  Monardella odoratissima subsp. pallida M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  UC1537599  Monardella odoratissima subsp. pallida Gordon H. True Jr. 1938-7-14 961 Lassen Just north of summit Milford Grade 1767 Comment
  UC506977  Monardella odoratissima subsp. pallida George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen Forest 1722 Comment
  JEPS122366  Monardella sheltonii Joseph Broberg, Jaycee Leonard 2012-8-27 CA 320 -127 Lassen From Alturas head South on Highway 395. At the town of Likely turn left onto county road 64, and continue to Jess Valley. Turn right at fork onto county road 258. Continue past Blue Lake, and turn onto Clark Valley road. Collection site is just after border between BLM and USFS land. South of aspen stand Comment
  SEINET12319572  Monardella villosa Unknown 1975-1 53 Lassen NW side of Coleman Lake, ca 32m from lake's edge, ca 10.6 km NE of Susanville 1921 Comment
  CHSC63392  Monolepis nuttalliana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6315 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  JEPS107400  Monolepis nuttalliana Lowell Ahart, John Dittes 2005-6-1 11897 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  POM103154  Monolepis spathulata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC4797  Montia chamissoi R. Carter 1967-7-7 583 Lassen Collected at W end of reservoir in open wet meadow. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  RSA74361  Montia chamissoi Milo S. Baker 1952-5-23 12421 a Lassen Wet Spot, E of Chester, Hwy 36 Comment
  NY497727  Montia chamissoi G. Schoolcraft 1982-6-16 703 Lassen Along Smoke Creek north of Shinn Ranch 1554.5 Comment
  UC1609172  Montia linearis Vernon H. Oswald and Lowell Ahart 1993-6-28 5611 Lassen ne of Poiston Lake (on the sse flank of Harvey Mountain, n of Hwy 44 on Rd, 33N06, nne of Burgess Meadow); Harvey Mountain 1798 Comment
  UC773867  Montia linearis L. R. Short, Wm. Gansberg 1936-6-8 S 392 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1743 Comment
  SEINET960052  Montia linearis Unknown 1978-1 8915 Lassen Vicinity of Spring at fork to Painters Flat on east side of Observation Peak, 28 Km (17.4 mi) airline distance. 1680 Comment
  UC1024657  Muhlenbergia andina Leo Whitney 1934-7-24 2195 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UC589858  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen near Red Rock; Sierraville Quadrangle 1341 Comment
  UCD86529  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UCD86573  Muhlenbergia asperifolia Leo Whitney 1934-7-4 2212 Lassen Lassen National Forest. Eagle Lake. 1584 Comment
  CAS-BOT-BC260596  Muhlenbergia filiformis George W. Gillett 1957-7-28 940 Lassen Lassen Volcanic National Park. Near W end of Widow Lake 2072 Comment
  CHSC60477  Muhlenbergia filiformis Mary Ann Showers 1992-6-12 2519 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  HSC95304  Muhlenbergia filiformis Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 680 Lassen Modo National Forest, Blue Lake Ranch. 1970 Comment
  RSA268993  Muhlenbergia filiformis J. R. Reeder, C. G. Reeder 1972-7-24 5811 Lassen Lassen National Forest; 17 miles NW of Susanville, along Hwy 44 1128 Comment
  UC163592  Muhlenbergia filiformis Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  UCD86724  Muhlenbergia filiformis L. Whitney 1935-6-21 3250 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CAS-BOT-BC275159  Muhlenbergia richardsonis Parkison 1916-6-10 19 Lassen Harvey Valley 1676 Comment
  RSA268991  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1972-7-24 5812 Lassen Lassen National Forest; 17 miles NW of Susanville, along Hwy 44 1128 Comment
  UCD86988  Muhlenbergia richardsonis L. Whitney 1933-8-15 s.n. Lassen Near Slate Creek. 1905 Comment
  CAS-BOT-BC515652  Muilla transmontana B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6599 Lassen U.S. Hwy. 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield. 1330 Comment
  CHSC7657  Muilla transmontana Beverley J. Wise 1969-5-3 145 Lassen 4.7 mi. east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1615 Comment
  CAS-BOT-BC515650  Muilla transmontana H. D. Ripley; R. C. Barneby 1944-5-29 5953 Lassen South of Jamesville 1280 Comment
  HSC63965  Muilla transmontana Teresa Prendusi 1980-5-8 Lassen Balls Canyon N of Shaffer Mtn. 6 mi. W of Hwy. 395 1372 Comment
  UC1951071  Myosurus apetalus Debra Valov 2009-4-26 2009020 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC1608993  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-5-12 5392 Lassen 0.6 mi e Shasta County Line (n side of Hwy 44, between Old Station and Poison Lake) 1645 Comment
  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
  UC1191974  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-9-5 8371 Lassen NW shore of Eagle Lake by Sam Webb's place (Spaulding). Comment
  POM312396  Myriophyllum sibiricum S. Galen Smith, Malcolm A. Nobs 1949-7-20 1049 Lassen 4 miles west of Adin. Comment
  SEINET12185161  Myriophyllum sibiricum A. Tiehm, Schoolcraft, G. 1984-1 9243 Lassen Buckhorn Resevoir on the south side of Buckhorn road to Ravendale, about 6 mi W of state line T35N 1698 Comment
  CHSC48463  Nama densa var. densa Vernon Oswald 1986-5-28 2057 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139 1584 Comment
  JEPS107300  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction 1461 Comment
  UC1609381  Nama densa var. densa Vernon H. Oswald and Lowell Ahart 1993-6-14 5539 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on w shore Eagle Lake); w shore Eagle Lake, at Sandy Beach 1566 Comment
  RSA0011498  Navarretia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46974 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  HSC75910  Navarretia breweri D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19274 Lassen Harvey Valley near Cone Springs Comment
  HSC63771  Navarretia breweri Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  UC1037269  Navarretia divaricata Leo Whitney 1934-7-10 1773 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Harvey Valley 1737 Comment
  CHSC29924  Navarretia intertexta subsp. propinqua Robin Ondricek 1978-6-7 40 Lassen Murrers Upper Meadow, .7 mi E of intersection with main road to ELFS and tunnel crossing. 1560 Comment
  CHSC34346  Navarretia intertexta subsp. propinqua K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5808 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  UC1184059  Navarretia intertexta subsp. propinqua Jean Langenheim 1957-6-22 4366 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  UCD37480  Navarretia intertexta subsp. propinqua Beecher Crampton 1960-6-20 5731 Lassen Lassen County, Lassen National Forest, 0.5 mile south of Black's Mountain USDA and Forest Service Experimental Station, 11 miles northwest of Bogard Ranger Station. 1706 Comment
  UCD48605  Navarretia intertexta subsp. propinqua John M. Tucker 1950-7-25 1977 Lassen On road from Pittville, 33 miles northwest of Susanville, Lassen County, California. Comment
  SEINET3860229  Navarretia leucocephala subsp. leucocephala Leigh A. Johnson 2006-1 06 -147 Lassen Lassen Natl. Forest: south side of Champs Flat Road, east end of Champs flat, a little west of Dow Flat road.; 0 1693 Comment
  CHSC66253  Navarretia leucocephala subsp. minima Vernon H. Oswald; Lowell Ahart 1996-6-24 7847 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  UCD48537  Navarretia leucocephala subsp. minima Gerald Dickinson 1963-7-3 75 Lassen Along U.S. Highway 299, 1 mile west of Bieber. 1249 Comment
  HSC96700  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1986-6-24 8183 Lassen Along SR 395 58.9 mi. N of jct. with SR 36 Comment
  RSA293374  Navarretia leucocephala subsp. minima Reino Alava 1957-7-5 1143 Lassen Along Highway 395, 10 miles N of Madeline. Comment
  CHSC60840  Navarretia linearifolia subsp. linearifolia Vernon H. Oswald; Lowell Ahart 1993-6-28 5616 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In woods along the road. 1798 Comment
  UC773906  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
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC231218  Nemophila parviflora var. austiniae Philip A. Munz 1947-5-18 11860 Lassen Fredonyer Forest Campground on Highway 36, W of Susanville 1508 Comment
  CHSC117190  Nemophila pedunculata Lowell Ahart; John Dittes 2016-6-7 21010 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valleuy Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  POM73805B  Nemophila pedunculata Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  UCSC000580  Nemophila pedunculata L. R. Short, W. Gansberg 1936-6-8 393 Lassen Burgess Spring Experiment Range 1743 Comment
  CHSC4447  Neoholmgrenia andina K. R. Stern 1967-6-24 2416 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  UC1567448  Neoholmgrenia andina G. Schoolcraft 1989-6-7 1907 Lassen ne lower slopes Shaffer Mtn. 1524 Comment
  SEINET6174383  Nicotiana attenuata A. Kowal, D. Mathews, S. Massed, S. Batiuk, B. Kalb 2011-8-10 NV 030 -594 Lassen Constantia fire, Constantia Road off Highway 395 1344 Comment
  UC1191768  Nicotiana attenuata Verne Grant and Irving Schneider 1947-8-1 8235 Lassen e end Tule Lake Comment
  UC1745659  Nicotiana attenuata Annetta M. Carter 1945-9-30 1722 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  CDA41136  Nicotiana attenuata T. C. Fuller 1959-7-7 4734 Lassen Highway 395, 2.4 miles south of road to Karlo. 0 Comment
  SEINET4174378  Nitrophila occidentalis Unknown unknown s.n. Lassen 2 mi SW of Wendel Comment
  CDA18261  Nothocalais alpestris G. D. Barbe 1974-8-2 1923 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UCD134648  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen South of CR. 512, south 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
  CHSC106678  Oenothera deltoides subsp. piperi Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 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
  UC566272  Oenothera deltoides subsp. piperi E. Sawyer 1935-6-27 231 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  SEINET10491874  Oenothera deltoides subsp. piperi Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 477 Lassen Approx 3 mi s of hanesville at honey lake, rest area on us hwy 395; in sagebrush-grass margin between jeffery pine oak forest and honey lake. 1250 Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  SEINET5345714  Oenothera deltoides var. piperi P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  UCR71445  Oenothera elata subsp. hirsutissima Barbara Ertter 1987-7-24 7304 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  RSA27327  Oenothera flava C. L. Hitchcock 1940-5-26 6642 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC29904  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 33 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  SEINET6188292  Oreocarya schoolcraftii G. Schoolcraft 1999-7-12 2858 Lassen N. of Tuledad Canyon near NV stateline. 1737 Comment
  CAS-BOT-BC350040  Oreostemma alpigenum var. andersonii M. S. Jussel 1931-9-7 s.n. Lassen Bumpas Hell Trail, Mt. Lassen 2133 Comment
  CAS-BOT-BC350042  Oreostemma alpigenum var. andersonii Hans Leschke 1958-9-30 1571 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  CAS-BOT-BC350043  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1845 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  JEPS109987  Oreostemma alpigenum var. andersonii Dean W. Taylor 2007-6-14 20131 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood 1801 Comment
  CAS-BOT-BC350041  Oreostemma alpigenum var. andersonii Hans Leschke 1959-8-3 1595 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  CHSC10945  Orobanche corymbosa K. D. Cox 1971-7-5 144 Lassen Approx. 1/4 mi. NW of main campus L.F.S. 1554 Comment
  UC1136756  Orobanche corymbosa subsp. corymbosa L. R. Short and J. Warren 1936-6-30 S- 465 Lassen NW of Eagle Lake, Burgess Spring Experiment Range. Comment
  UC1561410  Orobanche corymbosa subsp. corymbosa Barbara Ertter 1987-7-25 7315 Lassen Ca 27 air miles NW of Susanville, FR33N02 to Harvey Valley W of junction with FR33N04. Comment
  RSA408800  Orthocarpus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CAS-BOT-BC266614  Orthocarpus cuspidatus Lassen 1927 G. S. Crew 1927-7-15 66 Lassen 1 mile W Bogard Ranger Station 1737 Comment
  UC1484779  Orthocarpus cuspidatus subsp. cryptanthus Noel H. Holmgren and Patricia K. Holmgren 1978-6-12 8933 Lassen 17 km (10.5 mi) airline distance ese Ravendale (s of Observation Peak, upper Smoke Creek); Upper Smoke Creek, just s of Observation Peak 1770 Comment
  POM44256  Orthocarpus hispidus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA0089259  Orthocarpus purpurascens Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  JEPS98391  Oryzopsis exigua Vernon H. Oswald, G. Schoolcraft, M. Dolan, and B. Corbin 2000-6-18 9929 Lassen E of Ravendale (E-NE of the lookout on Observation Peak) 2377 Comment
  UC35980  Packera eurycephala var. eurycephala Mrs. C. C. Bruce June 1898 2176 Lassen Shumway Comment
  UC35987  Packera eurycephala var. eurycephala M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixie Mts. Comment
  HSC18106  Paeonia H. E. Parks, S. T. Parks Jun 1928 223 Lassen Lassen National Park, Drakesbad 1768 Comment
  CAS-BOT-BC10386  Paeonia brownii J. T. Howell 1955-7-19 30820 Lassen East side of Beckwourth Pass 1493 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
  CAS-BOT-BC10426  Paeonia brownii 1927-7-1 47 Lassen Bogard R.S. pasture, Lassen Forest 1712 Comment
  UC69607  Paeonia brownii J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  JEPS121279  Panicum Lowell Ahart, John Dittes 2013-7-23 18909 Lassen On the E side the gravel road, N-S road W of Big Canal, 0.76 Mile N of CA 299, 4.9 air miles NE of Bieber, Big Valley. Comment
  CHSC84341  Panicum capillare Lowell Ahart 2003-8-17 10517 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  UCD89524  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen Susanville. 1295 Comment
  UCD89807  Panicum capillare subsp. 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
  CHSC68873  Pectiantia pentandra Vernon H. Oswald; Lowell Ahart 1997-6-24 8615 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  RSA294197  Pectocarya penicillata A. Tiehm 1980-5-29 5753 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 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
  SBBG68673  Pedicularis attollens H. and M. Dearing 1938-7-1 2238 Lassen 12 mi W of Susanville Comment
  CAS-BOT-BC7094  Pedicularis attollens subsp. protogyna Francis Whittier Pennell 1940-6-10 25771 Lassen Route 36 road to Coppervale R.S., E of Westwood Comment
  UC1567381  Pedicularis centranthera G. Schoolcraft 1989-5-3 1862 Lassen nw corner of Secret Valley 1356 Comment
  JEPS3332  Pedicularis groenlandica George Gillett 1952-7-29 119 Lassen w slopes of Paradise Meadow; Lassen Volcanic National Park 2148 Comment
  HSC20946  Pedicularis semibarbata H. E. Parks, S. T. Parks Jun 1928 237 Lassen Drakesbad, Mt. Lassen, E side 1524 Comment
  SEINET10549211  Pedicularis semibarbata Mary Merello 1993-6-28 Merello 754 Lassen Lassen National Forest. Along Forest Service Road 33N02 to Harvey Mountain Lookout and Harvey Valley. Open pine scrub and sagebrush woodland. 1740 Comment
  UC2042972  Pedicularis semibarbata Barbara Ertter 1990-5-13 8965 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  JEPS7229  Penstemon Jos. Grinnell 1928-6-26 Lassen Cinder Cone, SE slope 2103 Comment
  UC153407  Penstemon cinicola Milo S. Baker Aug 1894 152 Lassen Pine Creek Comment
  UC1063371  Penstemon deustus A. Simontacchi 1940-6-4 795 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  POM195126  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 948 Lassen Susanville. 1280 Comment
  POM252931  Penstemon deustus subsp. sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass on Hwy 36. 1646 Comment
  NY600703  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen East slope of Tule Mountains 1770 Comment
  UC1537436  Penstemon gracilentus Gordon H. True Jr. 1938-7-14 959 Lassen summit on Milford Grade , just on n slope (just on n slope) 1676 Comment
  UC27451  Penstemon gracilentus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Pine Creek Comment
  SEINET10548051  Penstemon miser Mary Susan Taylor 1974-1 Taylor 276 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC5914  Penstemon newberryi J. B. Kimsey 1946-7-12 Lassen Gem Lake, Caribou Primitive Area. 2133 Comment
  NY640119  Penstemon procerus var. procerus N. H. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  SEINET5323576 Image available Penstemon procerus var. procerus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC4912  Penstemon roezlii A. E. Anderson 1967-6-24 27 Lassen Abundant in soil on roadside leading to Murrer's Meadow, 1 mi. east of junction of road to Eagle Lake Biological Station. 1554 Comment
  JEPS23794  Penstemon roezlii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7138 Lassen Sandy playa beside U.S. 395 one-fourth mi s of junction of road to Smoke Creek; s of junction of rd to Smoke Creek 1341 Comment
  NY650094  Penstemon roezlii N. H. Holmgren 1978-6-11 8920 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  NY650101  Penstemon roezlii T. W. Nelson 1980-7-6 6021 Lassen Adin Quad. Along Adin-Madeline road ca. 0.5 mile west of Moll Reservoir. 1585.0 Comment
  UC1520673  Penstemon roezlii Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9523 Lassen 24 km (15 mi) airline distance se Ravendale (21.9 km (13.6 mi) from U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1580 Comment
  UC690374  Penstemon roezlii David D. Keck and J. Clausen 1935-6-24 3727 Lassen 5 mi s Likely ((Modoc Co.)); s of Likely 1400 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-BC239494  Penstemon rydbergii var. oreocharis Lassen 1927 G. S. Crew 1927-7-1 49 Lassen Lassen National Forest, Bogard R.S. pasture 1712 Comment
  CHSC12483  Penstemon rydbergii var. oreocharis Carol Weld 1969-6-20 15 Lassen Dean's Meadow. 1950 Comment
  CHSC30583  Penstemon rydbergii var. oreocharis Leonard Walk 1972-6-29 48 Lassen Dean's Meadow on S. side of pond. 1981 Comment
  CHSC30588  Penstemon rydbergii var. oreocharis Marc Held 1972-6-29 23 Lassen South end of Dean's Meadow. Comment
  JEPS12898  Penstemon rydbergii var. oreocharis G. S. Crew and C. S. Robinson 1927-7-1 49 Lassen Bogard R.S. pasture Lassen Forest <sw?>, Bogard R.S. pasture 1712 Comment
  RSA0115350  Penstemon rydbergii var. oreocharis Lowell A. Ahart, John Dittes 2008-6-20 14919 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SBBG7130  Penstemon rydbergii var. oreocharis H. and M. Dearing 1938-7-1 2239 c Lassen 12 mi W of Susanville Comment
  UC1137681  Penstemon rydbergii var. oreocharis George A. Fischer and Irwin H. Johnson 1933-7-12 F 228 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  CHSC23549  Penstemon speciosus W. O. Baum 1971-6-28 25 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC60780  Penstemon speciosus Vernon H. Oswald; Lowell Ahart 1993-6-14 5531 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
  JEPS9349  Penstemon speciosus George W. Gillett July 1953 273 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass (Highway 36) 1752 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
  NY660833  Penstemon speciosus F. W. Pennell 1940-6-10 25786 Lassen Route 36, 3 miles northwest of Westwood 1645.9 Comment
  POM203061  Penstemon speciosus J. T. Howell 1934-6-10 11905 Lassen 3 miles S of Ravendale. Comment
  CAS-BOT-BC243405  Penstemon sudans H. D. Ripley; R. C. Barneby 1943-6-14 5739 Lassen W. of Susanville 1371 Comment
  CHSC43495  Penstemon sudans Lowell Ahart; John Thomas Howell 1974-7-9 531 Lassen Along Eagle Lake Road, about 3 1/2 miles north-west of Susanville. 1584 Comment
  JEPS109636  Penstemon sudans Dean W. Taylor 2002-6-21 18167 Lassen Highway 139 about 4 miles North from Lassen College (ca. 5 miles N of Susanville) 1478 Comment
  NY661797  Penstemon sudans G. W. Gillett 1953-7-13 274 Lassen Fredonyer Pass, Highway 36. One mile east of pass. 1706.9 Comment
  NY661803  Penstemon sudans N. H. Holmgren 1978-6-12 8937 Lassen Rye Patch Canyon, 4.3 km (2.7 miles) east of U.S. Highway 395, just above Ramhorn Campground, 14.5 km (9 miles) airline distance southeast of Ravendale. 1740 Comment
  HSC100162  Peraphyllum ramosissimum J. P. Smith, & J. O. Sawyer 2011-8-14 13377 Lassen Along service road, 1.8 mi. from Hwy. 395. 1541 Comment
  NY850110  Peraphyllum ramosissimum G. Schoolcraft 1984-6-11 1207 Lassen Hills east of Bull Flat 1585 Comment
  CAS-BOT-BC211251  Perideridia Louella Bass 1976-1-1 158 Lassen Elysian Valley Comment
  POM82582  Perideridia bolanderi subsp. bolanderi Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA0092314  Perideridia bolanderi subsp. bolanderi Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31422 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  SEINET5320866  Perideridia bolanderi subsp. bolanderi Unknown 1968-6-3 2882 Lassen Northeast of Litchfield; North of Honey Lake, west side of Highway 395, 7.4 miles northeast of Litchfield. Near historical marker about emigrants and approximately 500 feet north of it Comment
  SEINET12121439  Perideridia gairdneri Unknown 1978-1 62 Lassen Papoose Creek ca 1 km S of Gallatin Beach, S end of Eagle L 1585 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
  UC1390005  Perideridia oregana T. I. Chuang and F. Gleason 1963-8-22 5923 Lassen on Hwy 299 0.6 mi se Bieber Comment
  UC20876  Perideridia oregana Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  UCD20364  Peritoma platycarpa Joe DiTomaso 2002-6-4 s.n. Lassen About 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. Comment
  CAS-BOT-BC413480  Persicaria amphibia L. S. Smith 1918-7-22 1006 Lassen Modoc National Forest. Blue Lake 1874 Comment
  CHSC61234  Persicaria amphibia P. V. Caldwell 1972-7-16 297 Lassen At foot of Black Mtn. on e shore of Eagle Lake. Comment
  CHSC59095  Persicaria lapathifolia Vernon H. Oswald; Lowell Ahart 1992-8-25 5189 Lassen Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  CHSC64878  Phacelia adenophora Vernon H. Oswald; Lowell Ahart 1995-6-19 6884 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. 1371 Comment
  HSC28828  Phacelia adenophora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19305 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS79215  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
  OBI48096  Phacelia adenophora Rhonda Riggins 1989-4-27 1643 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  RSA75519  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen On Madeline Plain. 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
  POM252966  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  UCD72517  Phacelia adenophora Joe DiTomaso 2008-5-15 s. n. Lassen Modoc Plateau, just inside California (from Nevada) on Smoke Creek Road near Ravendale. Comment
  CHSC71089  Phacelia bicolor var. bicolor Vernon H. Oswald; Lowell Ahart 1998-5-22 9132 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  UC1069270  Phacelia bicolor var. bicolor E. Sawyer 1935-6-27 233 Lassen Long Valley Sierraville Quadrangle Comment
  JEPS107796  Phacelia hastata subsp. compacta Lowell Ahart, John Dittes 2005-6-2 11950 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction 1498 Comment
  CHSC59550  Phacelia hastata subsp. hastata Mary Meyer 1980-7-22 519 Lassen Top of Fredonyer Peak, north of sharp bend in road at top, in rock outcrops. 2346 Comment
  NY1057241  Phacelia heterophylla N. H. Holmgren 1980-7-4 9503 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  SBBG64963  Phacelia heterophylla E. Rockwell -Jun-1925 404 Lassen Eagle Lake 1554 Comment
  POM203779  Phacelia heterophylla subsp. virgata J. T. Howell 1934-7-10 12553 Lassen Black s Mt. Comment
  POM73331  Phacelia heterophylla subsp. virgata Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC114005  Phacelia heterophylla var. virgata B. Castro; L. P. Janeway 2014-6-7 2029 Lassen Northern High Sierra Nevada. 1.1 air mi SSW of Fredonyer Pass, along USFS Rd 29N46 0.4 rd mi S of Hwy 36. 1749 Comment
  CHSC4910  Phacelia humilis A. E. Anderson 1967-6-23 5 Lassen Around Eagle Lake Biological Station. 1554 Comment
  CHSC5262  Phacelia humilis 1944-7-9 Lassen Dow Butte, Eagle Lake. 2042 Comment
  UC24377  Phacelia humilis Mrs. C. C. Bruce June 1898 2191 Lassen Susanville Antelope hills Comment
  CHSC68891  Phacelia humilis var. humilis Vernon H. Oswald; Lowell Ahart 1997-6-24 8620 Lassen South of susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. 2036 Comment
  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
  RSA112694  Phacelia inundata J. T. Howell 1934-7-8 12510 Lassen Spaldings Resort; Eagle Lake Comment
  CHSC12454  Phacelia linearis Robert W. Severin 1969-6-27 38 Lassen E.L.B.S., 250 ft. n of Vesta Holt Hall. Comment
  CHSC5051  Phacelia linearis L. B. Barlow 1967-6-23 3 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC67059  Phacelia linearis Willis Ball 1969-6-28 55 Lassen Found on E.L.B.S. in dry basaltic soil. 1554 Comment
  CHSC726  Phacelia linearis F. Hughes 1935-6-2 Lassen Near Susanville. 1524 Comment
  CHSC80208  Phacelia linearis Jeanne Boze 1981-6-13 117 Lassen On northeast slope of Gallatin Peak. 1981 Comment
  SBBG64994  Phacelia linearis S. W. Hutchinson -Jun-1925 395 Lassen Eagle Lake 1554 Comment
  POM203782  Phacelia linearis J. T. Howell 1934-6-10 11901 Lassen 3 miles S of Ravendale. Comment
  RSA337277  Phacelia lutea Noel Holmgren, Patricia K. Holmgren 1980-7-3 9473 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  UC107396  Phacelia procera T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  SEINET7356303  Phacelia ramosissima var. eremophila Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9508 Lassen Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0 1890 Comment
  RSA128306  Phacelia thermalis Peter H. Raven, Otto T. Solbrig 1958-6-17 13297 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  UC1100415  Phleum pratense Herbert L. Mason and Verne Grant 1947-7-9 13303 Lassen 5 mi e Bieber (irrigation ditch) 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
  UC1191212  Phlox diffusa Lloyd Swift 1928-5-23 Lassen Bassi Hell Hole Lassen National Forest Comment
  UC1567441  Phlox longifolia G. Schoolcraft 1989-5-16 1878 Lassen w of Rice Canyon Rd. (at base of Antelope Mtn.); Antelope Mtn. 1280 Comment
  CHSC4263  Phlox speciosa K. R. Stern 1967-6-24 2412 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CAS-BOT-BC294732  Phlox speciosa James Vale 1981-5-24 s.n. Lassen Eagle Lake Comment
  CHSC1306  Phlox speciosa subsp. occidentalis M. Anthony 1953-4-27 Lassen Susanville. 1280 Comment
  CHSC35953  Phlox stansburyi M. S. Taylor 1982-5-29 4572 Lassen Ca. 500 yds ne of the jct of Hwys 70 and 395 at Hallululia Jct, ca 23 mi n of Reno. Comment
  CHSC36495  Phlox stansburyi Theresa Costa 1982-6-4 31 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. 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
  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
  CHSC117545  Phoradendron bolleanum Lowell Ahart; John Dittes 2016-7-13 21136 Lassen 5 yards south of the gate to the pond, along 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
  CHSC76837  Phoradendron densum L. P. Janeway; B. Castro, Loren Gehrung 1999-10-10 6595 A Lassen High Cascade Range. Near Eiler Creek between Fraener Peak and Horse Heaven Buttes; at Cypress Trailhead into Thousand Lakes Wilderness Area. 1639 Comment
  HSC1474  Pinus contorta R. A. Magie 1964-5-1 61 Lassen 15 mi. W of Susanville on Hwy. 44 1524 Comment
  SEINET11610302  Pinus jeffreyi David Charlet 1996-7-8 2288 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  SEINET12429009  Pinus monophylla var. californiarum D. Charlet, P. Herman 1995-3-6 2192 Lassen Diamond Mountains, 10 kn ESE of Adams Peak; W side Long Valley, NW of Petersen Mtn. on little ridgetop visible from US 395, below railroad above windmill; 1408 Comment
  SJSU8053  Plagiobothrys cognatus R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline Comment
  CHSC110913  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 A Lassen Along a very small drainage, about 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117271  Plagiobothrys cusickii Lowell Ahart; John Dittes 2016-7-15 21212 Lassen About 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1261 Comment
  CHSC117547  Plagiobothrys cusickii Lowell Ahart; John Dittes 2016-7-13 21114 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 northern slope of Big Valley. 1289 Comment
  JEPS119643  Plagiobothrys cusickii Lowell Ahart, John Dittes 2012-7-9 18284 -A Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS119652  Plagiobothrys cusickii Lowell Ahart, John Dittes 2012-7-9 18284 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC78130  Plagiobothrys cusickii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC66237  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7861 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 interface between meadow and forest on the W side of the meadow ca. 0.4 mi S of the cabins. 1633 Comment
  JEPS103210  Plagiobothrys hispidulus G. Schoolcraft 1989-7-24 1991 Lassen Said Valley Reservoir 1630 Comment
  JEPS87509  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1993-6-14 5510 Lassen ca 3 mi (air) w. Eagle Lake (junction of Lassen A1 (Eagle Creek Rd.) with Lassen A21 (32N02)) 1813 Comment
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest Comment
  CHSC110772  Plagiobothrys hispidus Dean Wm. Taylor 2012-7-18 21274 Lassen Pumice flat nestled in the cones about 2 miles South of the south end Poison Lake (along Highway 44). 1783 Comment
  UCD55307  Plagiobothrys leptocladus Ellen Dean; Gary Schoolcraft 2006-5-16 3136 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
  CHSC66721  Plagiobothrys mollis var. mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  RSA0035395  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2008-6-20 14921 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  POM89198  Plagiobothrys tenellus Milo S. Baker 1890-1 s.n. Lassen Milford. Comment
  CHSC7769  Plantago lanceolata Beverley J. Wise 1969-6-4 74 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  UCD124605  Plantago lanceolata P. B. Schultz 1967-7-11 70 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  HSC95284  Platanthera dilatata var. leucostachys Gordon Leppig 1998-7-12 941 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC12462  Platanthera leucostachys Robert W. Severin 1969-6-26 21 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach. 3 mi. s of E. L. B. S. 1645 Comment
  JEPS26656  Plectritis macrocera Lauramay T. Dempster 1961-6-17 1681 Lassen just w of Tule Mountain (Highway 395); Highway 395 1645 Comment
  CAS-BOT-BC326710  Pleiacanthus spinosus John Thomas Howell 1961-9-25 36971 Lassen East side of Beckwourth Pass, Sierra Nevada 1554 Comment
  CAS-BOT-BC326713  Pleiacanthus spinosus Gordon H. True 1973-8-22 7658 Lassen North shore of Honey Lake ca. 5 miles east of Janesville and just west of Hartson Reservoir Comment
  JEPS114748  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
  RSA295427  Poa bulbosa J. R. Reeder, C. G. Reeder 1981-5-20 7349 Lassen 3.5 km NNW of Janesville. Transition above Long Valley. 1250 Comment
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC589933  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (bank of Ash Creek) Comment
Read comments
Jun 24 2009
  UC1024837  Poa cusickii subsp. cusickii Leo Whitney 1935-6-10 3219 Lassen Camp 10 Fruit Grower's Supply Company Comment
  SEINET10524396  Poa fendleriana Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 883 Lassen Collected 3 mi N of Milford, Calif. on Hwy 395 at Honey Lake campgrounds. Comment
  SEINET190961 Image available Poa pratensis A. A. Beetle 2797 Lassen 10 miles west of Chester Mountain meadow. 1524 Comment
  UCD91956  Poa pratensis R. Tofsrud 1947-7-24 213 Lassen 13 miles E of Madeline. 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
  CHSC91319  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2005-6-1 11848 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
  UC1132873  Poa pratensis subsp. pratensis Robert W. Gardner 1937-6-18 G- 8 Lassen Burgess Spring Experimental Range; Halls Flat Quadrangle Comment
  JEPS126508  Poa secunda Alejandro Brambila, Michael Dolan 2016-7-7 CA 320 -157 Lassen Ash Valley road 1 mi past Holbrook Reservoir. Comment
  UCD90323  Poa secunda A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3367 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  UCR119165  Poa secunda Beecher Crampton 1954-7-5 2057 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  CAS-BOT-BC236259  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 miles E of Westwood on road to Fredonyer Pass 1584 Comment
  CAS-BOT-BC247051  Poa secunda subsp. juncifolia John Thomas Howell 1973-7-10 49777 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC247052  Poa secunda subsp. juncifolia Ralph K. Gierisch 1968-7-11 3352 Lassen Lassen National Forest, Harvey Valley - Dixie Spr. 1706 Comment
  CAS-BOT-BC247053  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  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
  UC1024912  Poa secunda subsp. juncifolia Leo Whitney 1935-6-26 3370 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024949  Poa secunda subsp. juncifolia Leo Whitney 1935-6-27 3317 Lassen ca 13 mi w of n end Eagle Lake; Squaw Valley Comment
  UC1037123  Poa secunda subsp. juncifolia Leo Whitney 1935-6-23 3285 Lassen near Camp 10 Fruit Grower's Supply Company Comment
  UC1037128  Poa secunda subsp. juncifolia Leo Whitney 1935-6-19 3259 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  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
  UC39628  Poa secunda subsp. juncifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3318 Lassen Honey Lake Valley, De Witt's Honey Lake Valley Comment
  UCD92368  Poa secunda subsp. juncifolia J. B. Davy 17-24 Jun 1897 s.n. Lassen Honey Lake Valley. Comment
  UCD92427  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 s.n. Lassen Near Fruit Grower's Supply Co., Camp 10. Comment
  SEINET7294025 Image available Poa secunda subsp. juncifolia Leo Whitney 1935-1 3259 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National 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
  UC1132878  Poa secunda subsp. secunda Robert W. Gardner 1939-6-28 G- 31 Lassen Little Harvey Valley; Halls Flat Quadrangle Comment
  UC506999  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 206 Lassen Grass Valley; Lassen Nat'l Forest 1699 Comment
  UC70684  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UC70959  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Comment
  CAS-BOT-BC254381  Poaceae John Thomas Howell 1974-7-10 50518 Lassen Janesville, at the cemetary 1295 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
  UC1483864  Polemonium micranthum M. Meyer 1980-5-1 Lassen e Horse Lake Road (s of Ravendale); , e of Horse Lake Road 1645 Comment
  CDA40272  Polemonium micranthum Lee Wheeler 1960-4-13 3941 Lassen At the fairgrounds, Susanville. 0 Comment
  UC73604  Polemonium occidentale Milo S. Baker 1894-1 Lassen Bridge Creek Comment
  NY182309  Polyctenium fremontii A. Tiehm 1984-6-25 8825 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81. 1828.8 Comment
  NY182307  Polyctenium fremontii var. confertum G. Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1609.3 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
  CHSC68619  Polyctenium fremontii var. fremontii Vernon H. Oswald; Lowell Ahart 1997-5-7 8405 Lassen Mud Flat along Smoke Creek Ranch Rd. 1.7 mi east of Hwy. 395. 1356 Comment
  HSC24811  Polygala subspinosa D. H. Norris, F. J. Hermann 1972-5-17 22633 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) 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
  JEPS28709  Polygonum George W. Gillett 1957-7-29 939 Lassen near w end of Widow Lake, Lassen Volcanic National Park Widow Lake; Lassen Volcanic National Park, Widow Lake 2072 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
  UC6720  Polygonum amphibium var. emersum J. Burtt Davy Jun 17 1897-Jun 24 1897 3321 Lassen Honey Lake Valley; shallow w end of lake Comment
  JEPS28700  Polygonum amphibium var. stipulaceum George W. Gillett 1957-7-26 921 Lassen Butte Lake Lassen Volcanic National Park (in shallows near campground area) 1844 Comment
  CAS-BOT-BC419766  Polygonum argyrocoleon Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pittville 1219 Comment
  SEINET10479337  Polygonum aviculare Mary Susan Taylor 1982-8-19 Taylor 5021 Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  JEPS50508  Polygonum bistortoides Brown and Wieslander 1922-7-18 55 Lassen Martin Sprs. Eagle Lake Comment
  CDA22783  Polygonum davisiae C. Siebe 1971-6-19 Lassen Near cattle corrals at southwest end of Westwood. 0 Comment
  RSA104503  Polygonum douglasii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CHSC105243  Polygonum douglasii subsp. spergulariiforme Lowell Ahart; John Dittes 2010-7-31 16979 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  RSA768026  Polygonum douglasii subsp. spergulariiforme L. Ahart, John Dittes 2010-7-31 16979 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  UC1178952  Polygonum douglasii subsp. spergulariiforme Herbert L. Mason Jul 29 1955-Jul 31 1955 14645 Lassen near Westwood Junction ((railroad station 15 mi w of Susanville), s Lassen Co.) Comment
  CHSC58506  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 1992-7-3 5049 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1 mi N of Cameron Meadow. 1950 Comment
  CHSC60844  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1719 Comment
  JEPS120876  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18732 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
  JEPS19797  Polygonum polygaloides subsp. confertiflorum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6003 Lassen 3.1 mi s of Madeline (along U.S. Highway 395, Madeline Plains); Madeline Plains, U.S. Highway 395 1615 Comment
  JEPS22874  Polygonum polygaloides subsp. confertiflorum Herbert L. Mason Jul 29 1955-Jul 31 1955 14639 Lassen Pine Creek Flat Comment
  JEPS87371  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
  UC1060646  Polygonum polygaloides subsp. kelloggii Herbert L. Mason 1957-7-5 14712 Lassen between Madeline and summit of grade; Madeline Plains Comment
  CAS-BOT-BC420145  Polygonum ramosissimum subsp. ramosissimum John Thomas Howell 1934-7-8 12501 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC420163  Polygonum sawatchense subsp. sawatchense John Thomas Howell 1934-6-14 12148 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC27647  Polygonum sawatchense subsp. sawatchense N. E. Heiken 1978-7-5 72 Lassen S. of Eagle L., E shore of Mahogany L. 2060 Comment
  UC1609438  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd (Lassen A1) 0.5 mi w Spaulding Tract Rd. (Rd. 518, 33N89) (ca 3 mi w of Eagle Lake) 1810 Comment
  UCD100686  Polygonum spergulariiforme J. M. Tucker 1950-7-25 1976 Lassen 33 miles northwest of Susanville, on road from Pittville. Comment
  CHSC112799  Polypogon monspeliensis Lowell Ahart; John Dittes 2013-7-22 18874 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA715989  Polypogon monspeliensis L. Ahart, John Dittes 2005-6-2 11967 Lassen 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. 1409 Comment
  CHSC52131  Populus fremontii Detzer; Sacks 1977-7-1 3 Lassen Ca. 3 mi se Milford, .5 mi se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  CAS-BOT-BC105617  Populus trichocarpa John Thomas Howell; Gordon H. True 1973-8-1 50148 Lassen Gold Run Creek Road south of Susan ville, Diamond Range - Sierra Nevada 1584 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
  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
  UC1143018  Porterella carnosula August L. Hormay 1934-5-14 Lassen Little Harvey Valley; Lassen National Forest, Little Harvey Valley 1676 Comment
  CHSC118487  Porterella carnosula Don Lepley 2015-5-29 Lassen Lassen National Forest. Eagle Lake Ranger District. Southeast corner of Pine Creek Valley, about seven air miles east of Bogard Rest Area. 1716 Comment
  SEINET10460824  Porterella carnosula Peter H. Raven 1958-6-17 Raven 13294 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline Comment
  SEINET12329667  Porterella carnosula N. H. Holmgren, Holmgren, P. K. 1980-1 9463 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi.) S of Madeline, T36N, R13E, S9 1620 Comment
  SJSU3186  Porterella carnosula R. L. Fisher 1958-6-16 s.n. Lassen six miles south of Madeline, Madeline Plains, northeastern Lassen County 1615 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
  POM118854  Potamogeton foliosus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UCD149958  Potamogeton foliosus William Anderson 1963-5-12 s.n. Lassen High Rock. Comment
  CHSC66284  Potamogeton gramineus Vernon H. Oswald; Lowell Ahart 1996-6-24 7876 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  OBI77555  Potamogeton natans Anthony Baniaga 2011-7-23 458 Lassen Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4 1700 Comment
  UC1099819  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1491 Lassen 1 mi s Doyle; Long Creek Comment
  RSA323730  Potamogeton pusillus A. Tiehm, Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  CAS-BOT-BC454029  Potamogeton pusillus subsp. pusillus Arnold Tiehm; Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line 1698 Comment
  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
  CAS-BOT-BC454091  Potamogeton pusillus subsp. tenuissimus Verne Grant; Irving Schneider 1947-7-31 8212 Lassen Northeast quarter of George Williams section 19, Madeline Plain 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
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 Comment
  CAS-BOT-BC540030  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  CAS-BOT-BC540031  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  POM312882  Potentilla biennis Verne Grant 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  CHSC60394  Potentilla glandulosa subsp. ashlandica Mary Ann Showers 1992-6-13 2533 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC60849  Potentilla glandulosa subsp. ashlandica Vernon H. Oswald; Lowell Ahart 1993-6-28 5613 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. On the edge of vernal pool. 1798 Comment
  UC146438  Potentilla gracilis var. elmeri J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  UC773876  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spring Experiment Range Lassen National Forest 1767 Comment
  SBBG3009  Potentilla gracilis var. flabelliformis H. and M. Dearing 1938-7-1 2240 Lassen W of Susanville Comment
  POM366603  Potentilla millefolia Christopher Davidson 1975-6-6 2721 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CAS-BOT-BC144842  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CAS-BOT-BC159777  Prunus andersonii R. F. Thorne; C. W. Tilforth 1969-9-6 39252 Lassen Beckwourth Pass, Plumas-Lassen Co. line county 1589 Comment
  CHSC106581  Prunus andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  RSA60357  Prunus andersonii E. K. Balls 1950-5-9 15947 Lassen 6 miles south of Doyle, Hwy 395. 1372 Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  UCR17286  Prunus virginiana Frank C. Vasek 1975-7-11 750711- 38 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  JEPS107870  Prunus virginiana var. demissa Lowell Ahart, John Dittes 2005-6-2 11931 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
  UC1128504  Prunus virginiana var. demissa A. Simontacchi 1940-6-4 800 Lassen 7.1 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1836 Comment
  CAS-BOT-BC239797  Pseudoroegneria spicata John Thomas Howell 1934-6-14 12166 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC239806  Pseudoroegneria spicata James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 mi. ssw. of Karlo 1417 Comment
  UCD91511  Pseudoroegneria spicata August L. Hormay 1929-6-1 s.n. Lassen Susanville Forest Office. Comment
  RSA647559  Pseudoroegneria spicata subsp. spicata Marion P. Harthill 1972-6-17 809 Lassen Ravendale 1768 Comment
  CHSC29852  Psilocarphus brevissimus var. brevissimus Robin L. Ondricek 1978-6-8 48 Lassen Lower Dry Lake at lake's edge. 1645 Comment
  UC1924584  Psilocarphus brevissimus var. brevissimus Debra Valov 2006-5-28 2006014 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC361752  Psilocarphus brevissimus var. brevissimus Clarence R. Quick 1962-6-17 62 25 B Lassen Swains Hole, a man-made pond in sagebrush south of Blacks Mountain Experimental Station 1554 Comment
  JEPS124658 Image available Psilocarphus brevissimus var. brevissimus M. L. Wheelis 1964-7-1 132 Lassen Highway 139, 12 mi. north of Susanville. Comment
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  CAS-BOT-BC239792  Puccinellia distans G. Schoolcraft 1993-6-1 2270 Lassen Coyote Spring 1463 Comment
  UCD113288  Purshia tridentata G. L. Webster 1989-5-13 7715 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC147824  Purshia tridentata var. tridentata M. S. Taylor 1982-5-7 4431 Lassen Reno Junction on Hwy 70, just e of Beckwourth Pass 1524 Comment
  RSA122150  Purshia tridentata var. tridentata G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 212 Lassen Lassen Forest. 1723 Comment
  RSA647526  Purshia tridentata var. tridentata Marion P. Harthill 1972-6-17 814 Lassen Ravendale 1768 Comment
  UC1167550  Purshia tridentata var. tridentata E. C. Nord 1958-7-12 108 Lassen near Janesville (near Plumas National Forest) 1371 Comment
  UC467830  Purshia tridentata var. tridentata Franklin P. Nutting Lassen Pine Creek Comment
  CAS-BOT-BC462880  Pyrola asarifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 Comment
  CAS-BOT-BC462881  Pyrola asarifolia George W. Gillett 1957-7-24 900 Lassen Lassen Volcanic National Park: Cameron Meadow 1950 Comment
  CAS-BOT-BC462756  Pyrola dentata Clare B. Hardham 1969-8-28 17446 Lassen Sierra Nevada: west of Janesville. Comment
  CHSC66723  Pyrola picta Vernon H. Oswald; Lowell Ahart 1996-8-1 8130 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. 2011 Comment
  UC70346  Pyrola picta Milo S. Baker 1890-1 Lassen Milford Comment
  CAS-BOT-BC362264  Pyrrocoma carthamoides var. cusickii G. S. 1984-7-11 1292 Lassen About 4 miles west of Madeline. 37-12-14 1706 Comment
  UCR163275  Pyrrocoma hirta Jim Andre 1993-6-29 1408 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  UCD135332  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Hwy 395. Comment
  CHSC115058  Pyrrocoma lucida Allison Sanger 2012-7-25 Lassen Lassen National Forest, Eagle Lake Ranger District. Near Road 28N38 just south of junction with Road 28N03, about 1.2 miles east of Mountain Meadows Reservoir. Sec. 31, SE1/4 of NE1/4 and Sec. 32 SW1/4 of NW1/4. 1554 Comment
  UC296045  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC94255  Quercus garryana Alice Eastwood; John Thomas Howell 1940-6-11 7966 Lassen Eastern Fall River Valley Comment
  CAS-BOT-BC105244  Quercus kelloggii M. B. Kildale 1927-9-11 2791 Lassen Susanville 1524 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
  UCD46733  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen Southwest of Susanville on Gold Run Road, Lassen County. 1341 Comment
  OBI77065  Quercus palustris Anthony Baniaga 2011-10-15 516 Lassen Susanville. Lassen County superior court parking lot. Susanville quad T30N R12E sec 33 SW of SW 1280 Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  SEINET516314  Ranunculus alismifolius var. lemmonii Vernon H. Oswald 1998-6-22 9230 Lassen Champs Flat Rd. (A-21) 1.8 mi N of Hwy 44, ca. 18 air mi N of Westwood. 1750 Comment
  CDA24294  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  UC9368  Ranunculus aquatilis var. capillaceus M. S. Baker and Frank Nutting 1894-7-25 Lassen Eagle Lake 1524 Comment
  CHSC66258  Ranunculus aquatilis var. diffusus Vernon H. Oswald; Lowell Ahart 1996-6-24 7877 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  CAS-BOT-BC379024  Ranunculus aquatilis var. diffusus B. Bartholomew; B. Anderson 1988-7-22 4504 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 488 Comment
  RSA0011455  Ranunculus cymbalaria subsp. saximontanus Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46982 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC59807  Ranunculus cymbalaria var. saximontanus Mary Meyer; Teresa Prendusi 1980-5-8 Lassen Near the creek in Balls Canyon. 1341 Comment
  JEPS55056  Ranunculus cymbalaria var. saximontanus W. L. Jepson 1918-8-2 7768 Lassen Beckwith Pass; below spring 1463 Comment
  UC9426  Ranunculus cymbalaria var. saximontanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3370 Lassen Honey Lake Valley Comment
  RSA293370  Ranunculus cymbalaria var. saximontanus Reino Alava 1957-7-5 1135 Lassen Along Highway no. 395, 4.4 miles S of Ravendale. Comment
  JEPS28454  Ranunculus flammula George W. Gillett 1957-7-22 872 Lassen Snag Lake Lassen Volcanic National Park (s shore) 1850 Comment
  UC1025100  Ranunculus flammula Leo Whitney 1934-8-5 1800 Lassen 16 mi nw Westwood; Lassen National Forest, Caribou Lake 2194 Comment
  UC1191440  Ranunculus flammula Verne Grant and Irving Schneider 1947-8-24 8267 Lassen Blue Lake; nw shore, n Lassen Co. Comment
  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
  CHSC7184  Ranunculus glaberrimus var. ellipticus Lynn R. Thomas 1969-4-17 100 Lassen Ca. 100 yds. w of Rice Canyon Rd., down hillside and just across small creek; 5 mi n of junction with 'Back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  RSA0062681  Ranunculus occidentalis Marion P. Harthill 1972-6-17 825 Lassen Madeline. 1676 Comment
  POM312416  Ranunculus sceleratus Malcolm A. Nobs, S. Galen Smith 1949-7-21 1050 Lassen Small marshy creek, 1 mile E of Maderline, Comment
  CDA24351  Ranunculus sceleratus var. multifidus D. L. Haws 1974-5-3 Lassen Railroad right-of-way near Susanville. 0 Comment
  UC579615  Rhaponticum repens E. Sawyer 1935-6-27 239 Lassen 5 mi ne Beckwith Pass; Sierraville Quad. 1463 Comment
  CDA25528  Ribes cereum J. R. Keck Jr. 1977-7-13 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  JEPS28697  Ribes roezlii George W. Gillett 1957-7-26 917 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  RSA0026922  Ribes roezlii Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles below Eagle Lake. 1524 Comment
  SEINET10838520  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 309 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC117224  Rigiopappus leptocladus Lowell Ahart; John Dittes 2016-6-7 20976 Lassen 20 yards west of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS117586  Rigiopappus leptocladus Lowell Ahart, John Dittes 2010-7-31 16980 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC74531  Rorippa curvisiliqua John Thomas Howell; Gordon H. True 1973-8-1 50243 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2133 Comment
  CHSC84873  Rorippa curvisiliqua Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 354 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  CHSC66861  Rorippa curvisiliqua var. orientalis Vernon H. Oswald; Lowell Ahart 1996-9-10 8282 Lassen Mountain Meadows Reservoir SW of Westwood. On the embankment of the railroad along the northwest edge of the reservoir. 1539 Comment
  CHSC99504  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2008-6-20 14937 Lassen On the edge of Big Valley Canal and in vernal pools, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS121254  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-7-22 18855 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET10448589  Rorippa obtusa Mary Susan Taylor 1974-7-8 Taylor 264 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  CHSC33101  Rorippa sphaerocarpa M. S. Taylor 1974-7-10 278 Lassen In meadow, ca. 3 mi s of Gallatin Beach on s end of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  UC1128595  Rosa bridgesii A. Simontacchi 1940-6-24 722 Lassen 6.4 miles S. W. of Jacks Lake Halls Flat Quad. 1950 Comment
  CHSC6260  Rosa woodsii subsp. ultramontana W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1584 Comment
  JEPS88554  Rosa woodsii var. ultramontana Vernon H. Oswald and Lowell Ahart 1996-6-17 7773 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at bridge spanning the Susan River on n side of Hwy 36); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  CAS-BOT-BC148390  Rubus leucodermis John Thomas Howell 1974-7-9 50482 Lassen Coniferous forest between Susanville and SW end of Eagle Lake 1828 Comment
  CHSC60401  Rubus parviflorus Mary Ann Showers 1992-6-13 2556 Lassen Lassen Volcanic National Park. Southwest of Widow lake. 2072 Comment
  CHSC25904  Rumex K. R. Stern 1967-6-30 2445 Lassen West central side of Eagle Lake. 1554 Comment
  CAS-BOT-BC110481  Rumex B. C. Cain 1925-8-24 85 Lassen 1 mile below Drakesbad, Mount Lassen National Park. 1645 Comment
  CAS-BOT-BC421955  Rumex acetosella Margaret Williams; Steven Williams 1974-7-26 74 -L-23 Lassen Near Hellelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  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
  CDA23194  Rumex salicifolius T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20384 Lassen West end of the dam of Smoke Creek Reservoir. 0 Comment
  CHSC67689  Rumex salicifolius var. lacustris James D. Jokerst 1983-7-25 1891 Lassen Madeline Plains W of Termo. Comment
  CHSC58852  Rumex salicifolius var. triangulivalvis Vernon H. Oswald; Lowell Ahart 1992-7-16 5123 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. Common on drier parts of a marshy meadow. 1719 Comment
  JEPS121296  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, 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
  CAS-BOT-BC109419  Rumex venosus John Thomas Howell 1978-4-19 52865 Lassen Sierra Nevada. Along Highway 395 between Doyle and Milford. Comment
  POM203794  Rumex venosus J. T. Howell 1934-7-8 12486 Lassen Spaldings Resort; Eagle Lake Comment
  SEINET8584738  Rumex venosus W. Harnach 2011-6-4 1247 Lassen NE slope of Turtle Mtn., Fort Sage Mtns., Honey Lake Valley, approx. 7.5 miles NE of Doyle, CA on the Fort Sage Road. 1329 Comment
  UCD150405  Rumex venosus William Anderson 1963-6-2 s.n. Lassen Honey Lake Refuge. Comment
  SEINET4176402  Rumex venosus N. J. Hartke 1953-5-18 29 Lassen 2 miles north of Halleluja, Calif. Comment
  SEINET4176560  Rumex venosus Cahlan 1932-5-31 1413 Lassen Between Doyle and Susanville Comment
  CHSC61063  Sagittaria cuneata Vernon H. Oswald; Lowell Ahart 1993-8-3 5753 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the N edge of the swamp. 1932 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
  UC803885  Sagittaria cuneata G. L. Stebbins Jr. 1949-8-6 4004 Lassen edge Feather Lake (betw. Susanville and McArthur); edge of Feather Lake 1676 Comment
  CAS-BOT-BC332741  Sagittaria cuneata R. F. Thorne; Larry E. DeBuhr 1975-8-22 46992 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  NY188399  Salix eriocephala subsp. mackenzieana R. D. Dorn 1972-6-2 1492 Lassen Willow Creek, about 15 miles SSE of Adin 1524.0 Comment
  JEPS88245  Salix exigua Vernon H. Oswald and Lowell Ahart 1996-6-17 7784 Lassen n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (ditch along trail, trail accessed at Devils Corral Trailhead off of hwy, w of Susanville); Modoc Plateau 1432 Comment
  RSA0035819  Salix exigua Lowell A. Ahart, John Dittes 2008-6-22 15043 Lassen In Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. 1257 Comment
  HSC26528  Salix lasiandra J. P. Smith, J. O. Sawyer 1972-5-6 5239 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
Read comments
Apr 29 2013
  CAS-BOT-BC128174  Salix lasiandra var. lasiandra Mrs. E. C. Sutliffe 1927-6-1 s.n. Lassen Drakesbad - Lassen Volcanic park Comment
  JEPS107868  Salix lasiandra var. lasiandra Lowell Ahart, John Dittes 2005-6-2 11925 Lassen Long Valley, along a small ditch, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CHSC13668  Salix lemmonii E. L. Smith 1971-4-28 946 A Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  SEINET10417120  Salix lucida subsp. caudata G. Schoolcraft 1995-5-14 2477 Lassen W of Susan Hills subdivision, SW of Susanville. 1372 Comment
  SEINET11987291  Salix lutea J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4121 Lassen Willow Creek Campground on road between adin and Said Valley Reservoir Comment
  HSC95283  Salix petrophila Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC126174  Salix scouleriana Hans Leschke 1964-9-3 1891 Lassen Cinder Cone, Lassen Volcanic Nat. Park Comment
  CDA36352  Salsola gobicola B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  CHSC76096  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-9-13 8205 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  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
  UCD125448  Salvia aethiopis J. M. Tucker 1950-7-26 1979 Lassen outskirts of Susanville, on east side of town. Comment
  JEPS93816  Salvia dorrii var. dorrii Vernon H. Oswald and Lowell Ahart 1998-6-4 9145 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
  SEINET201595  Salvia dorrii var. dorrii Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8462 Lassen 50 miles southeast of Susanville. Comment
  UC585164  Salvia dorrii var. dorrii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1739 Lassen mountain above Red Rock 1432 Comment
  CHSC23496  Sambucus mexicana Wayne O. Baum 1971-7-6 71 -74 Lassen Basalt outcrop. . 2042 Comment
  CHSC26166  Sambucus mexicana Detzer; M. Sacks 1977-7-15 5 Lassen Ca. 3.5 mi SE of Milford, 1 mi SE of Laufman Rngr. Stn. on unimproved USFS road. 1420 Comment
  CHSC60277  Sambucus mexicana P. V. Caldwell 1972-6-23 247 Lassen Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow, on the bank. Comment
  RSA537728  Sambucus microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  JEPS103224  Sanicula graveolens G. Schoolcraft 1992-5-1 2235 Lassen W. of Susan Hills Subd. SW. of Susanville 1341 Comment
  UC1409833  Sanicula tuberosa K. Morris, Dunn and Conrad 1973-5-25 242 Lassen 7.6 mi nw of Junction of Hwy 36 and 44 on Highway 44 Highway 44 Comment
  SEINET3239994  Santalaceae R. L. Mathiasen 2010-1 1033 Lassen 0.3 km W of Fredonyer Pass on Rte. 36. 1660 Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 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
  CHSC30601  Sarcobatus vermiculatus L. J. Dawson 1975-7-7 44 Lassen Ca. 500 yd e of Horselake. 1584 Comment
  JEPS1765  Saxifraga nidifica var. nidifica Milo S. Baker 1952-5-23 12422 Lassen e of Chester (Hwy 36) Comment
  UC1608991  Saxifraga nidifica var. nidifica Vernon H. Oswald and Lowell Ahart 1993-5-12 5388 Lassen 1.6 mi se of Pittsville Road (Hwy 44 between Poiston Lake and A21 (to Westwood)) 1719 Comment
  UC1142964  Schoenoplectus acutus var. acutus A. L. Hormay 1941-6-17 23 Lassen meadow lake near Westwood; Lassen National Forest, meadow lake near Westwood 1615 Comment
  UC2134  Schoenoplectus acutus var. occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3312 Lassen Honey Lake Valley Honey Lake Valley (tules of sloughs and w end of lake) Comment
  POM111523  Schoenoplectus fluviatilis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC2120  Scirpus fluviatilis J. Burtt Davy Jun 17 1897-Jun 24 1897 3285 Lassen w end Honey Lake; Honey Lake Valley, w end Honey Lake Comment
  SEINET6727388  Sclerolinon digynum J. T. Howell, G. H. True., Jr. 1973-6-28 49490 Lassen Sierra Nevada, Elysian Valley 1326 Comment
  UC1100464  Scribneria bolanderi Malcolm A. Nobs, S. Galen Smith, Herbert L. Mason 1949-5-29 759 Lassen Nubeiber, on Great Northern Railroad, Highway 299 Nubeiber; , Great Northern Railroad, Highway 299 Comment
  RSA165466  Scrophularia lanceolata Clare B. Hardham 1961-6-17 7531 a Lassen Rte 395 Alturas Susanville Road 1524 Comment
  CAS-BOT-BC214266  Scutellaria nana Clarence R. Quick 1966-7-22 66 -55 Lassen Edge of logging road 19, east of Patterson Flat 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
  CAS-BOT-BC240085  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak Comment
  CDA28589  Secale cereale D. Haskelle 2000-2-7 s.n. Lassen Doyle. 0 Comment
  CHSC64815  Secale cereale Vernon H. Oswald 1995-6-7 6831 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 9.0, 3.6 mi e of Wendel, ne of Susanville. 1231 Comment
  RSA152627  Secale cereale I. L. Wiggins, Dorothy Wiggins 1961-6-11 16342 Lassen On hillside 13.5 mi. of Susanville Comment
  RSA483309  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi south of Ravendale, lower slopes Observation Peak Comment
  CAS-BOT-BC363325  Senecio aronicoides Jean Langenheim 1957-6-26 4372 Lassen Northwest Said Valley, north-eastern part of Lassen County Comment
  CHSC92758  Senecio aronicoides L. P. Janeway 2005-7-4 8471 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  POM260867  Senecio eurycephalus Alice Eastwood, J. T. Howell 1940-6-11 7968 Lassen Eastern Fall River Valley. Comment
  CHSC54176  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. Meadow. 1267 Comment
  JEPS109870  Senecio hydrophiloides Dean W. Taylor 2007-6-14 20129 Lassen between Gordon Lake and Bullard Lake, along Forest Road 31N31 0.3 miles NE of junction with Forest Road 34N25 (this the junction at the northwest end of Gordon Lake) 1828 Comment
  UC1594646  Senecio hydrophilus Vernon H. Oswald and Lowell Ahart 1992-7-16 5128 Lassen Feather Lake on s side Bridge Creek Spring Rd. ((County Rd. 112, Forest Rd. 31N06), ca 0.4 mi e of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02) between Old Station and Susanville); Feather Lake 1749 Comment
  OBI75864  Senecio hydrophilus Anthony Baniaga 2011-9-8 511 Lassen Lassen Natl Forest. Caribou Wilderness; Long Lake, W shore peninsula. Red Cinder quad T30N R7E sec 16 SW of NW 2103 Comment
  HSC63728  Senecio integerrimus Teresa Prendusi 1980-4-30 Lassen NE of Snowstorm Ranch near Kalo Rd., Ravendale; near railroad tracks 1585 Comment
  SEINET10799218  Senecio integerrimus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17788 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  UCD135546  Senecio integerrimus Grady L. Webster 1989-5-13 7702 Lassen Butterfly Valley area. Aound 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  CAS-BOT-BC363857  Senecio integerrimus var. exaltatus Elmer I. Applegate 1934-5-4 8937 Lassen 15 miles south of Ravendale Comment
  CDA8673  Senecio pseudaureus var. pseudaureus Gordon Leppig 1998-7-12 948 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. 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
  CAS-BOT-BC213324  Sidalcea G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  CAS-BOT-BC205777  Sidalcea oregana Ralph K. Gierisch 1968-7-11 3354 Lassen Lassen National Forest, Harvey Valley 1706 Comment
  SBBG4714  Sidalcea oregana H. and M. Dearing 1939-6-6 3569 Lassen Bieber Comment
  UCD18967  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). 1950 Comment
  UCD116829  Sidalcea oregana P. B. Kennedy 1927-6-13 s.n. Lassen Fall River, by intake above dtich. Comment
  POM260184  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA647545  Sidalcea oregana subsp. oregana Marion P. Harthill 1971-6-21 204 Lassen Susanville. Comment
  UC1537657  Sidalcea oregana subsp. oregana Gordon H. True Jr. 1937-7-10 789 Lassen rocky mesa near Skeedaddle; near Skeedaddle 1493 Comment
  JEPS28713  Sidalcea oregana subsp. spicata George W. Gillett 1957-7-29 944 Lassen along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park, btw Butte Lake and Snag Lake 1859 Comment
  UC186050  Sidalcea oregana subsp. spicata T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  SEINET9005527  Sidalcea oregana var. spicata C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CHSC57275  Silene bernardina Mary Meyer 1980-7-22 Lassen Downhill 100 yds west from sharp bend in road on top going to Lookout Tower. 2316 Comment
  RSA123272  Silene bernardina L. R. Short, D. Gish 1936-7-15 S- 487 Lassen MDM, Burgess Spr. Exp. Range; Forest: Lassen. 1744 Comment
  CAS-BOT-BC384309  Silene bernardina George W. Gillett 1957-7-28 928 Lassen Lassen Volcanic National Park. On trail to Widow Lake above junction with Snag Lake Trail at upper end of Butte Lake 1859 Comment
  SD113389  Silene douglasii Darley F. Howe 1964-8-2 3917 Lassen East Creek, Warner Mountains, Modoc National Forest. 2010 Comment
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  CHSC59709  Silene menziesii Mary Meyer 1980-7-28 Lassen 2148 Comment
  CAS-BOT-BC389545  Silene nuda M. S. Taylor; B. Hammond 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass 1432 Comment
  JEPS50953  Silene nuda W. L. Jepson 1918-8-3 7802 Lassen near Buntingville (at Raker Ranch, Honey Lake Valley); Honey Lake Valley, at Raker Ranch 1219 Comment
  UC569941  Silene nuda E. Sawyer 1935-6-27 223 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UCD18969  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  SEINET8411725  Silene nuda Elmer I. Applegate 1923-9-30 4035 Lassen Constantia, Honey Lake Valley. Comment
  SEINET10537591  Silene nuda subsp. insectivora Mary Susan Taylor 1982-7-8 Taylor 4790 Lassen T23N R17E sw sec 16. Beckwourth Pass quad. Along Scott Rd just s of bend, in Sagebrush Scrub, ca. 4 mi ne of Beckwourth Pass, s of Constantia. 4700 ft. 1432 Comment
  CAS-BOT-BC75079  Sisymbrium altissimum Louella Bass 1973-5-25 46 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UC1126792  Sisymbrium altissimum E. Sawyer 1935-6-27 224 Lassen Long Valley 1310 Comment
  UCD115496  Sisymbrium altissimum P. B. Kennedy 1927-9-1 s.n. Lassen Janesville. Comment
  CHSC64775  Sisymbrium orientale Vernon H. Oswald 1995-5-31 6803 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  JEPS62138  Smilacina stellata W. L. Jepson 1918-8-2 7783 Lassen lower bench of creek 1 mi below Boni Ranch house; Long Valley, Long Valley Creek 1371 Comment
  UC3888  Smilacina stellata J. Burtt Davy Jun 17 1897-Jun 24 1897 3387 Lassen Adobe Meadows Honey Lake Valley, Byer's Ranch Comment
  NY820339  Solanum triflorum G. Schoolcraft 1987-9-1 1774 Lassen Along Ash Valley road in Ash Valley 1548 Comment
  UC1191779  Solanum triflorum Verne Grant, Irving Schneider 1947-8-1 8234 Lassen east end of Tule Lake Tule Lake Comment
  HSC21315  Solanum triflorum D. E. Anderson 1962-8-6 2331 Lassen Lake at foot of Tule Mtn. Comment
  CAS-BOT-BC365369  Solidago elongata B. C. Cain 1925-8-24 78 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  POM38169  Sonchus asper Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  HSC95310  Sparganium emersum Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 691 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS96089  Sparganium emersum subsp. emersum Vernon H. Oswald and Lowell Ahart 1996-6-24 7871 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 1633 Comment
  UC1099936  Sparganium emersum var. emersum Verne Grant and Irving Schneider 1947-8-24 8271 Lassen nw shore Blue Lake (n Lassen County) Comment
  CAS-BOT-BC213214  Sphaeralcea grossulariifolia P. Monnet 1913-7-1 803 Lassen Hot Spring Peak 1524 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
  CAS-BOT-BC374759  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 1998-6-29 2319 Lassen Ash Valley along main road crossing Ah [Ash] Crk. 1554 Comment
  JEPS128408  Spiraea douglasii Catherine Bauer with Ellen Bauer Benson 2017-8-16 16 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  POM91114  Spiraea douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET3818362  Spiranthes romanzoffiana A. A. Heller 1938-1 Lassen Comment
  CHSC65281  Spirodela polyrhiza Vernon H. Oswald 1995-8-21 7213 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. At the SW corner of the lake. 1859 Comment
  CHSC41843  Stachys ajugoides var. rigida P. V. Caldwell 1972-7-8 262 Lassen Eagle Lake. 1 mile from the forest road toward Papoose Meadows on Papoose Creek. Comment
  CAS-BOT-BC60992  Stanleya viridiflora H. D. Ripley; R. C. Barneby 1943-6-15 5761 a Lassen Smoke Creek, northeast of Kesiland [illegible?]. 1341 Comment
  CAS-BOT-BC60993  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen Near Karlo, about 12 miles north of Litchfield. 1356 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
  SEINET11924834  Stellaria longipes Unknown 1967-1 550 Lassen 25 yds W of dam in Murrer's Meadow Comment
  RSA713119  Stenotus acaulis L. P. Janeway, B. Castro 2005-7-10 8487 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge. 1993 Comment
  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
  UC1037278  Stephanomeria lactucina Leo Whitney 1934-7-22 1747 Lassen 6 mi w Eagle Lake, lower end (near Antelope Mountain); Lassen National Forest 1889 Comment
  CAS-BOT-BC375596  Stephanomeria lactucina Alice Eastwood 1912-8-22 s.n. Lassen Trail from Morgans Springs to Lassen Butte Region Comment
  CAS-BOT-BC322925  Stephanomeria tenuifolia Clarence R. Quick 1964-8-5 64 -95 Lassen Cal Mt. east of Poison Lake 1767 Comment
  HSC22318  Stipa nelsonii subsp. dorei D. E. Anderson 1969-7-5 4992 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UCR183194  Stipa thurberiana Jim Andre, G. L. Clifton 1993-5-28 7715 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  CHSC57125  Streptanthus Mary Meyer 1980-7-21 Lassen Near sharp bend in road on way to Fire Lookout. 2316 Comment
  NY215290  Streptanthus cordatus D. B. Dunn 1971-6-2 17787 Lassen 6 mi N of Hallelujah Jct. on U.S. Hwy 395. 1402.1 Comment
  CAS-BOT-BC454187  Stuckenia striata Wm. Anderson 1960-6-16 s.n. Lassen Hartson Reservoir, Honey Lake Waterfowl Management Area Comment
  POM68227  Symphoricarpos acutus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CAS-BOT-BC269699  Symphoricarpos mollis G. Schoolcraft 1997-6-24 2604 Lassen Doyle Grade W of Doyle 1706 Comment
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 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
  SD211535  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen circa 3/4 mile East-Northeast of Beckwourth Pass at end of old crumbling paved road 1524 Comment
  JEPS95906  Symphyotrichum ascendens Lowell Ahart and Vernon H. Oswald 1999-9-13 8230 Lassen along S side of dirt road, Willow Creek is on the S side of the road, about 250 yds. E of the sign in station along Hwy 139, Willow Creek Wildlife Area 1463 Comment
  CHSC5199  Symphyotrichum campestre 1944-7-5 Lassen Eagle Lake. Harvey Valley. 1695 Comment
  UCD136493  Symphyotrichum campestre Verne Grant; Irving Schneider 1947-7-31 8210 Lassen northeast quarter of George Williams section 19, Madeline Plain. Comment
  CAS-BOT-BC98930  Symphyotrichum foliaceum var. parryi B. C. Cain 1925-8-24 111 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CHSC59130  Symphyotrichum frondosum Vernon H. Oswald 1992-7-3 5054 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1851 Comment
  CHSC72217  Symphyotrichum spathulatum var. yosemitanum Vernon H. Oswald 1998-9-14 9624 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  CAS-BOT-BC238510  Synthyris missurica John Thomas Howell 1934-6-14 12119 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UC1136807  Taraxacum officinale L. R. Short and W. McNulty 1936-6-17 Lassen Burgess Spr. Exp. Range Lassen Forest 1795 Comment
  CAS-BOT-BC376899  Taraxacum officinale 1927-6-19 17 Lassen Lassen National Forest. Norval Flat 1747 Comment