Search Results — 2000 specimen records retrieved (1582 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? 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
  UCD133116  Abies concolor Beecher Crampton 1960-6-18 5711 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  CHSC21470  Abies magnifica M. S. Taylor 1975-7-16 839 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. 2133 Comment
  CAS-BOT-BC331637  Acer macrophyllum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49449 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC28650  Achillea millefolium Albert Michael Vollmer; L. Beane 1953-7-1 97 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur. 1554 Comment
  CHSC4769  Achillea millefolium R. Carter 1967-7-16 619 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side on rd. Comment
  CHSC5191  Achillea millefolium J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek, Eagle Lake, Lassen Co., California. 1580 Comment
  CHSC60271  Achillea millefolium P. V. Caldwell 1972-6-23 245 Lassen Headwaters of Willow Creek, Upper Murer's Meadow. Comment
  UC506903  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-14 F 275 Lassen Patterson Flat; Lassen National Forest 1737 Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  UCD50709  Achnatherum lemmonii George A. Fischer; Irwin H. Johnson 1933-7-12 198 Lassen Grass Valley. 1696 Comment
  UCD50843  Achnatherum nevadense B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CAS-BOT-BC216444  Achnatherum occidentale subsp. californicum 1927-6-25 29 Lassen Unspecified 1706 Comment
  RSA129521  Achnatherum occidentale subsp. californicum L. R. Short, Wm Gansberg 1936-6-2 S- 366 Lassen MDM, Burgess Spr. Exp. Range 1859 Comment
  UC1024835  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-10 3221 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD51122  Achnatherum occidentale subsp. californicum L. R. Short; W. Gansberg 1936-6-2 S 366 Lassen Burgess Spring Experimental Range, Lassen National Forest. 1858 Comment
  CAS-BOT-BC218611  Achnatherum occidentale subsp. pubescens John Thomas Howell 1974-7-10 50519 Lassen Janesville, at the cemetery, Sierra Nevada 1295 Comment
  UC1137656  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 F 199 Lassen Grass Valley Lassen National Forest 1696 Comment
  UC1143048  Achnatherum occidentale subsp. pubescens L. R. Short and J. Warren 1936-6-29 S- 462 Lassen Burgess Spring Experimental Range Lassen National Forest 1820 Comment
  CAS-BOT-BC218009  Achnatherum thurberianum Louella Bass 1973-5-25 EU 42 Lassen Elysian Valley 1325 Comment
  JEPS114857  Achnatherum thurberianum Lowell Ahart, John Dittes 2008-6-19 14870 Lassen about 100 yds E of Willow Creek, about 120 yds NE of Hwy 139, near Forest Road 36N02, about 19.6 mi E-SE of Bieber 1578 Comment
  SEINET235293  Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC1024812  Achnatherum thurberianum Leo Whitney 1935-6-19 3267 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD51422  Achnatherum thurberianum L. Whitney 1935-6-19 3267 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UCD55295  Achnatherum thurberianum Ellen Dean; Gary Schoolcraft 2006-5-16 3116 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  CHSC29950  Acmispon americanus var. americanus Robin L. Ondricek 1978-6-8 51 Lassen Murrers Upper Meadow, .6 mi E of inersection with main rd. to ELFS. 1554 Comment
  CHSC113083  Acmispon denticulatus Lowell Ahart; John Dittes 2013-7-23 18888 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
  OBI75866  Aconitum columbianum subsp. columbianum Anthony Baniaga 2011-8-9 490 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  JEPS35591  Adonis aestivalis Wayne Savage 1964-7-1 339 Lassen 1/2 mi n of Willow Creek Guard Station (16 mi n of Susanville, on State Highway 139, 54 mi s of Adin); State Highway 139 1219 Comment
  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
  UC1124436  Agastache parvifolia A. Simontacchi 1940-6-30 915 Lassen 8.6 mi w Burgess Spring; Lassen National Forest, Halls Flat Quadrangle 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
  POM1922B  Ageratina occidentalis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC91811  Agoseris glauca G. Douglas Barbe 1974-8-20 1922 Lassen Upper Lond Valley. Hallelujah Junction, northwest corner of jct. of US Hwy 395 and Hwy 70. 1524 Comment
  UCR73167  Agoseris glauca G. L. Webster 1989-5-13 7704 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  SEINET10925084  Agoseris glauca Paul Gallian, David B. Dunn 1971-6-2 Gallian 510 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
  RSA715616  Agoseris glauca var. glauca L. Ahart 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UCD107495  Agoseris monticola Tim Kuhn 2006-7-18 41 Lassen Eagle Lake Ranger District.. Comment
  UC585114  Agoseris parviflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1793 Lassen about 2 mi n Madeline 1363 Comment
  UC773915  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  CAS-BOT-BC127582  Agropyron cristatum Margaret Williams 1974-8-4 74- 4 -78 Lassen Sierra Nevada. Burned area near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  UC1137133  Agrostis alba August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest, Bogard Ranger Station Comment
  RSA299261  Agrostis exarata J. T. Howell, Gordon H. True 1973-8-1 50226 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville Comment
  SACT000106  Agrostis exarata Malcolm Nobs, S. Smith 1949-7-21 Lassen shallow marshy stream from springs, 4 miles north of madeline Comment
  UC1142988  Agrostis exarata A. L. Hormay 1941-6-25 21 Lassen Burgess Spring Lassen Forest 1676 Comment
  SEINET4341020  Agrostis exarata G. Schoolcraft 1994-8-1 2382 Lassen About 2 miles west of Boot Lake 2256 Comment
  CAS-BOT-BC139679  Agrostis gigantea John Thomas Howell 1976-7-19 51975 Lassen Sierra Nevada. On Gold Run Creek southwest of Susanville. 1386 Comment
  CAS-BOT-BC139296  Agrostis idahoensis Arnold Tiehm 1980-5-29 5760 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles southeast of Wendel. 1220 Comment
  JEPS71138  Agrostis pallens Brown and Wieslander 73 Lassen Comment
  UCD53120  Agrostis pallens Leo Whitney 1934-7-10 2225 Lassen near Harvey Spring, Harvey Valley, 14 miles west of Eagle Lake, Lassen National Forest. 1737 Comment
  UCD53173  Agrostis pallens L. Whitney 1933-8-7 2194 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  UCD53279  Agrostis scabra August L. Hormay 1932-7-20 s.n. Lassen Lassen National Forest. Bogard Ranger Station. Comment
  CHSC115828  Agrostis stolonifera Lowell Ahart; John Dittes 2015-7-14 20335 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  SEINET14163171  Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  CAS-BOT-BC267065  Alisma gramineum Malcom A. Nobs; S. Galen Smith 1949-7-22 1074 Lassen Marshes along Willow Creek, Willow Creek Valley, 10 miles N of Susanville Comment
  JEPS88427  Alisma plantago-aquatica Vernon H. Oswald and Lowell Ahart 1996-8-1 8106 Lassen sw Westwood (shore of reservoir ne of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  UC55670  Alisma plantago-aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3337 Lassen Susan River Honey Lake Valley 1219 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
  GMDRC7739  Allium acuminatum J. M. Andre, G. Clifton 1993-6-1 33419 Lassen Modoc Plateau: along US Hwy 395 approx 11 mi. SE of Ravendale, just north of Tule Patch Spring, east of Snowstorm Mtn 1588 Comment
  POM110306  Allium acuminatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1776688  Allium acuminatum G. Schoolcraft 1993-6-29 2307 Lassen Ash Valley S of T intersection 1557 Comment
  UC1299748  Allium acuminatum Freed W. Hoffman 1946-6-9 739 Lassen on Highway 395 about 10 mi s Alturas; Dry Creek Comment
  RSA367043  Allium amplectens Anstruther Davidson s.n. Lassen [No locality information provided] Comment
  SEINET10899656  Allium anceps Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2572 Lassen 3 miles s of hallelujah jct., On u.s. Hwy. 395, Jct. Of u.s. 395 & Calif. 70; Along roadside and in artemesia - grassland field Comment
  UC1924588  Allium lemmonii Debra Valov 2006-5-29 2006018 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1271 Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 Comment
  CAS-BOT-BC476625  Allium tolmiei B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6563 Lassen U.S. Hwy. 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield. 1330 Comment
  CHSC91199  Alnus incana subsp. tenuifolia Lowell Ahart; John Dittes 2005-6-2 11945 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
  UCD109973  Alnus incana subsp. tenuifolia John Thomas Howell; J. H. True 1973-6-28 49461 Lassen Elysian Valley, west of Janesville. 1325 Comment
  UC1567403  Alopecurus aequalis G. Schoolcraft 1989-7-18 1976 Lassen s. of Clark's Valley Rd. near Buck's Spring 1572 Comment
  UCD55821  Alopecurus aequalis Mrs. Austin 1894-6-1 s.n. Lassen Willow Creek Valley. Comment
  UCD55846  Alopecurus aequalis L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp #10. Comment
  SEINET10510844  Alopecurus aequalis Alan A. Beetle 1941-6-28 Beetle 2795 Lassen 10 miles west of Chester, rte 36, open meadow near small stream. Assoc. Scirpus congdoni, Deschampsia, Ranunculus. Comment
  JEPS71146  Alopecurus geniculatus Brown and Wieslander 81 Lassen Comment
  OBI77305  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  UC1951079  Alyssum desertorum Debra Valov 2009-4-24 2009012 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET5340073  Alyssum desertorum J. A. Young 1982-1 s.n. Lassen M. Meyer's Ranch, Adin. 1372 Comment
  UC1924261  Alyssum minus subsp. micranthum Debra Valov 2004-5-31 2004226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  CHSC66859  Amaranthus californicus Vernon H. Oswald; Lowell Ahart 1996-9-10 8277 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC76262  Amaranthus powellii Lowell Ahart; Vernon H. Oswald 1999-9-13 8226 Lassen Along a small slough on the north side of Mapes Road, about 1/2 mile east of lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CAS-BOT-BC174355  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca. 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles east of Sierra Valley 1584 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
  UC761997  Ambrosia acanthicarpa R. F. Hoover 1940-10-5 4666 Lassen Wendel Comment
  UCD112861  Amelanchier alnifolia Beecher Crampton 1954-5-11 1881 Lassen Beckwourth Pass, Plumas. 1588 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
  CHSC1536  Amelanchier pallida V. Holt 1935-5-31 Lassen Near Susanville. 1584 Comment
  POM91172  Amelanchier pallida Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1137669  Amelanchier utahensis George A. Fischer and Irwin H. Johnson 1933-7-14 F 270 Lassen Lassen Forest 1737 Comment
  UC506908  Amelanchier utahensis George A. Fischer and Irwin H. Johnson 1933-7-14 F 270 Lassen Lassen Forest 1737 Comment
  CAS-BOT-BC222252  Amsinckia Alice Eastwood; John Thomas Howell 1940-6-11 7967 Lassen Eastern Fall River Valley Comment
  CDA18259  Amsinckia intermedia G. D. Barbe 1974-8-2 1921 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA0091257  Amsinckia macrosepala Amos Arthur Heller 1938-6-23 15204 Lassen Just outside of Johnstonville on U.S. Highway 395. Comment
  UC1924218  Amsinckia menziesii var. menziesii Debra Valov 2004-6-9 2004258 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  UCD119818  Amsinckia tessellata John Thomas Howell 1934-6-10 11842 Lassen Near Plumas Junction. Comment
  UC585123  Amsinckia tessellata var. tessellata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1747 Lassen e facing slope of gully on mountain above Red Rock 1432 Comment
  CHSC5194  Antennaria argentea A. Santos 1946-6-14 Lassen Spalding's, Eagle Lake. 1558 Comment
  SEINET3145644  Antennaria argentea M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  UC380911  Antennaria argentea Marcus E. Jones, A. M. 1897-6-25 Lassen Susanville 1341 Comment
  CAS-BOT-BC59220  Antennaria dimorpha James Jokerst 1983-5-31 1792 Lassen Grasshopper Valley Quad. Near Madeline Plains 1583 Comment
  CHSC54170  Antennaria dimorpha Vernon H. Oswald 1991-5-28 4624 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  UC1137285  Antennaria dimorpha K. E. Bradshaw 1939-5-27 244 Lassen near s end of Black Mt. Experimental Forest; Lassen National Forest, Halls Flat Quad., Thompson Meadow 1737 Comment
  CAS-BOT-BC69137  Antennaria geyeri John Thomas Howell 1934-7-9 12520 Lassen Pine Creek Flat Comment
  UC1609103  Antennaria geyeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5584 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  UC773955  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Burgess Spring Experiement Range 1828 Comment
  UC88216  Antennaria geyeri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  RSA416688  Antennaria geyeri Christopher Davidson 1974-7-24 2487 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  JEPS22839  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen 4 mi e Westwood Comment
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  RSA702449  Antennaria luzuloides L. P. Janeway 2004-6-26 8167 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  RSA715539  Antennaria luzuloides L. Ahart 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  CHSC89757  Antennaria luzuloides subsp. aberrans L. P. Janeway 2004-6-26 8168 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CAS-BOT-BC77284  Antennaria microphylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49414 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1609102  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  JEPS95712  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  JEPS49800  Apocynum androsaemifolium Brown and Wieslander 1922-7-17 3 Lassen Eagle Lake, Martin Springs 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
  UCD21048  Apocynum androsaemifolium E. Bortiri 2002-7-19 WFC 84 Lassen Along Rd 35N08, about 8 miles North of Poison Lake and Hwy 44,. Comment
  SEINET12319576  Apocynum pumilum Unknown 1978-1 48 Lassen Colman Lake, several mi SE of Eagle L., T31N R11E sec27 1963 Comment
  CAS-BOT-BC392212  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  UC773880  Aquilegia formosa L. R. Short 1936-6-26 S- 407 Lassen Lassen National Forest, Burgess Spr. Exp. Range 1837 Comment
  HSC82265  Arabis holboellii var. retrofracta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5992 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA516394  Arabis holboellii var. retrofracta Barbara Ertter, Gary Schoolcraft 1987-6-16 7174 Lassen Skeeadaddle Mtns on the NE side of Honey Lake. E side of road over saddle on W side of range. 1646 Comment
  RSA716275  Arabis holboellii var. retrofracta L. Ahart 2005-6-2 11926 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
Read comments
Jun 20 2021
  UC10185  Arabis holboellii var. retrofracta M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  RSA0005588  Arabis sabulosa var. frigida Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  NY119566  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  NY119617  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83226 Lassen Above Laufman Ranger Station, Plumas National Forest, 4.5 miles E of U.S. Hwy. 395 Comment
  CAS-BOT-BC409988  Arceuthobium campylopodum Louella Bass 1973-5-29 EU 48 Lassen Elysian Valley 1325 Comment
  CDA6788  Arctium minus T. C. Fuller 1959-7-7 4725 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  CAS-BOT-BC45896  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  SD43498  Arctostaphylos patula Philip A. Munz 1947-5-18 11865 Lassen Fredoyner Forestry Public Campground, W of Susanville 1509 Comment
  CAS-BOT-BC42166  Arctostaphylos patula subsp. patula Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16319 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  UC584338  Arenaria aculeata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2262 Lassen s Susanville (Bare summit ridge and ridges south west of Diamond Mt.) 2164 Comment
  POM101445  Arenaria congesta Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UCR18731  Arenaria congesta Frank C. Vasek 1975-7-11 750711- 07 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  UC1136825  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 2223 Lassen Lassen Forest 1728 Comment
  CAS-BOT-BC27516  Arenaria congesta var. simulans Amos Arthur Heller 1938-6-23 15198 Lassen 2 miles E of Fredonyer Pass 1645 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
  UC1562793  Arenaria congesta var. subcongesta Barbara Ertter with Gary Schoolcraft 1987-6-16 7193 Lassen ne side Honey lake (saddle on E side of Hot Springs Peak.); Skeedaddle Mountains Comment
  UC8098  Arenaria congesta var. subcongesta M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  NY430990  Arenaria kingii subsp. plateauensis G. Schoolcraft 1982-6-23 729 Lassen Fort Sage Mountains 1920.2 Comment
  CHSC52769  Argemone munita subsp. rotundata L. P. Janeway 1990-7-4 3770 Lassen Dry gravelly bench near east-side of saddle 0.8 mi NE of Meadowview Peak. 1981 Comment
  CAS-BOT-BC401792  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3545 Lassen Hills north of Susanville Comment
  CDA24523  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  UC71725  Argemone rotundata Mrs. M. H. Manning 1902-9-1 1 Lassen Reno Nevada to Amadee California Amadee Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  JEPS19757  Arnica chamissonis Rimo Bacigalupi with S. Galen Smith 1957-6-28 6005 Lassen 6.1 mi s of Madeline Comment
  SBBG128899  Arnica chamissonis L. Ahart,J. Dittes 2008-6-20 14902 Lassen ca. 150 yards SW of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  POM253188  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mile east of Fredonyer Pass on hwy 36 1707 Comment
  CHSC108027  Arnica cordifolia var. cordifolia Lowell Ahart; John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC27167  Arnica dealbata J. D. Prouty 1978-7-27 30 Lassen 3.9 mi w of jct with road A-1 on n side of Merrill Flat Rd just e of Roney Corral, s of Eagle Lake. 1770 Comment
  SEINET8734516 Image available Arnica foliosa var. incana A. L. Hormay 1941-1 8 Lassen Lassen; Sec. 31, T 33N, R. 9 E, Little Valley 1679 Comment
  CAS-BOT-BC82714  Arnica longifolia Louella Bass 1976-9-1 s.n. Lassen Willard Creek at Susan River Comment
  UC1137701  Arnica mollis A. Simontacchi 1940-5-28 785 Lassen 3.2 mi wsw Patterson Mtn.; Halls Flat Quad. 1767 Comment
  OBI76979  Arnica sororia Anthony Baniaga 2011-6-23 389 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  UCD129145  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UC1137582  Artemisia arbuscula subsp. arbuscula A. Simontacchi 1940-9-16 947 Lassen 1.3 mi ne of Ebey Lake; Lassen National Forest, Halls Flat Quadrangle 1691 Comment
  UC1479613  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 195 Lassen Painter Flat 1719 Comment
  UC217077  Artemisia cana subsp. bolanderi H. M. Hall 1921-9-10 11673 Lassen Madeline Plains Comment
  UC1037293  Artemisia douglasiana Leo Whitney 1934-9-5 1664 Lassen dry wash near Fredonyer Pass; Lassen National Forest 1584 Comment
  CAS-BOT-BC90328  Artemisia douglasiana Ynez Whilton Winblad 1935-9-28 s.n. Lassen Horse Lake Comment
  CAS-BOT-BC90330  Artemisia douglasiana Clare B. Hardham 1971-8-22 18374 Lassen North slopes, Diamond Mountain 2133 Comment
  CHSC77187  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfiled and Bass Hill Roads. 1322 Comment
  CAS-BOT-BC93741  Artemisia ludoviciana subsp. incompta Clare B. Hardham 1969-8-28 17463 Lassen Sierra Nevada - slope west of Janesville Comment
  CHSC117459  Artemisia ludoviciana subsp. ludoviciana Lowell Ahart; John Dittes 2016-7-13 21105 Lassen Center of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCD129329  Artemisia ludoviciana subsp. ludoviciana K. M. Meyer; A. Townesmith 2007-7-19 134 Lassen Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek. 1459 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
  CHSC64749  Artemisia spinescens Vernon H. Oswald 1995-5-24 6772 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wen-del). 1219 Comment
  CAS-BOT-BC97325  Artemisia tridentata subsp. tridentata George W. Gillett 1957-9-4 1132 Lassen Near Bute Lake; intersection of the Widow Lake - Snag Lake trails 1859 Comment
  UC762002  Artemisia tridentata subsp. tridentata R. F. Hoover 1940-9-28 4639 Lassen Leavitt Comment
  UC1123518  Asclepias cordifolia C. W. Hanks 1934-9-26 93 Lassen near Plumas National Forest (w side of valley); Sierraville Quadrangle, Long Valley Comment
  CHSC51995  Asclepias fascicularis Cindy Prouty 1978-7-3 23 Lassen SE Eagle L.--near Eagle Lake Field Station. 1572 Comment
  JEPS49969  Asclepias fascicularis Brown and Wieslander 1922-7-25 31 Lassen Martin Sprs. Eagle Lake Comment
  RSA516358  Aster campestris Barbara Ertter 1987-7-25 7311 a Lassen About 22 air miles NW of Susanville, Pine Creek Valley at jct. of Bridge Creek Springs Rd. 1738 Comment
  RSA712643  Aster campestris L. P. Janeway 2005-7-31 8514 Lassen Northern High Sierra Nevada. Diamond Mountains; Head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  POM261535  Aster intermedius Alice Eastwood 1912-8-22 1895 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  RSA712642  Aster occidentalis var. occidentalis L. P. Janeway 2005-8-31 8513 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  RSA715658  Astragalus accidens var. hendersonii L. Ahart 2005-6-1 11917 Lassen Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1426 Comment
  CAS-BOT-BC177441  Astragalus andersonii M. S. Taylor 1982-5-29 4561 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  NY791377  Astragalus andersonii W. W. Eggleston 1911-7-8 7188 Lassen Vicinity of Doyle Station 1290 Comment
  UC84393  Astragalus andersonii T. Brandegee 1892-6-30 Lassen Janesville Comment
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Oct 22 2007
  SEINET5323085  Astragalus andersonii M. J. Williams, A. Tiehm 1978-5-14 78- 48 -2 Lassen 2.8 mi S of northern road into Red Rock (off Hwy 395). 1372 Comment
  UC1594460  Astragalus anxius Meinke and Lantz 1991-7-16 6108 Lassen ca 25 km w Madeline (along Ash Valley Rd.); Ash Valley 1550 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
  UC82577  Astragalus canadensis var. brevidens unknown 1892-6-20 Lassen Milford 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
  RSA60316  Astragalus curvicarpus E. K. Balls 1950-5-9 15949 Lassen 6 miles south of Doyle, Hwy 395. 1372 Comment
  CAS-BOT-BC177843  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch 1280 Comment
  CHSC60738  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-6-14 5519 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
  CHSC64875  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald 1995-6-26 6923 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  NY803538  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch 1280 Comment
  UC84408  Astragalus curvicarpus var. curvicarpus unknown 1892-6-23 Lassen Honey Lake Comment
  NY803535  Astragalus curvicarpus var. curvicarpus M. J. Williams 1973-5-12 73-C- 16 Lassen Near Herlong Turn from Highway 395 1250 Comment
  SEINET11268146  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald, Lowell Ahart 1993-6-14 5519 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).; 0 1567 Comment
  SEINET12165120  Astragalus curvicarpus var. curvicarpus N. H. Holmgren, Holmgren, P. K. 1980-1 9504 Lassen Observation Peak, S side of Mt, 11 mi airline distance E of Ravendale, T34N R16W S34 1890 Comment
  CAS-BOT-BC182954  Astragalus filipes Peter H. Raven; Otto T. Solbrig 1958-6-17 13290 Lassen Along United States Highway 395, 0.4 miles south of Ravendale Comment
  CHSC37537  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  JEPS95714  Astragalus filipes Vernon H. Oswald and L. Ahart 1995-6-19 6883 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. Erect, many-stemmed herbaceous perennial. Corolla pale cream. 1371 Comment
  NY658483  Astragalus filipes G. Schoolcraft 1982-6-22 747 Lassen Ft. Sage Mtns. 1767.8 Comment
  NY658500  Astragalus filipes P. H. Raven 1958-6-17 13290 Lassen Along US Highway 395, o.4 mile South of Ravendale Comment
  SEINET225940 Image available Astragalus filipes M. Lavin, K Lavin 1982-5-16 4069 Lassen 1.5 mi E of Halleujah Jct. (US 395), 22 air mi 325 degrees from Reno, W side of Peterson Mts 1676 Comment
  SEINET3140019  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km S of Doyle on US Hwy 395 1430 Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  SEINET10874132  Astragalus filipes Taylor 1982-7-8 Taylor 4790 A Lassen T23N R17E ne/nw sec 2. Constantia quad. At gate near RR Crossing just off Scott Rd, ca. 5 mi s of Constantia. Sagebrush Scrub. 4600 ft. 1402 Comment
  SEINET10903957  Astragalus filipes Williams 1983-7-31 Williams 83 -125-1 Lassen Ash valley road, 17 mi from aden. 1829 Comment
  UCR244051  Astragalus geyeri var. geyeri Jim Andre 1993-6-1 19721 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC186861  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford 1264 Comment
  NY674268  Astragalus gibbsii G. Schoolcraft 1993-6-8 2285 Lassen US Highway 395 at Airport Road 1274 Comment
  CAS-BOT-BC186852  Astragalus gibbsii M. E. Jones 1897-6-24 s.n. Lassen 10-15 miles w. of Amedee 1219 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 Comment
  RSA110066  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1942-5-22 4541 Lassen Loyalton 1524 Comment
  RSA647557  Astragalus gibbsii Marion P. Harthill 1971-6-20 220 Lassen Ravendale Comment
  SD43503  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford, dry silty flats 1260 Comment
  CAS-BOT-BC186910  Astragalus inversus M. S. Baker 1898-8-1 529 Lassen Big Valley, near Johnson's Comment
  CAS-BOT-BC186913  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5749 Lassen W. of Susanville 1310 Comment
  RSA111018  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 4300 Lassen West of Susanville 1310 Comment
  UCD18950  Astragalus inversus Raymond D. Ratliff 1965-8-5 42 Lassen Lassen National Forest, Champ's Flat Allot. (CF 21-8). 1743 Comment
  RSA0006769  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 s.n. Lassen West of Susanville. Comment
  CAS-BOT-BC186944  Astragalus iodanthus G. Schoolcraft 1998-6-30 2744 Lassen N. slope of N. end of Ft. Sage Mtns. 1950 Comment
  CAS-BOT-BC229047  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  NY675496  Astragalus lentiginosus var. chartaceus N. H. Holmgren 1980-7-5 9519 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale 1680 Comment
  NY675509  Astragalus lentiginosus var. chartaceus H. D. D. Ripley 1943-6-14 5744 Lassen Hidden Valley east of Susanville 1311 Comment
  JEPS118159  Astragalus lentiginosus var. floribundus Dean W. Taylor 2009-5-20 20605 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mi NW of Brown Cabin (USGS map, site) 1478 Comment
  POM26311  Astragalus lentiginosus var. platyphyllidius Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CHSC7666  Astragalus malacus Beverley J. Wise 1969-5-3 55 Lassen 4.6 mi. east of junction of Hwy 395 on Las. Co. road 338 (Smoke Creek Road). 1554 Comment
  RSA584731  Astragalus malacus Bruce Bartholomew, M. Gilbert, L. Skog 1993-5-13 6551 Lassen Just S. of Ravendale. 1580 Comment
  UC81230  Astragalus malacus unknown 1892-6-23 Lassen Honey Lake Comment
  HSC63126  Astragalus malacus Teresa Prendusi 1980-4-28 1101 Lassen Rice Canyon 1341 Comment
  CAS-BOT-BC192842  Astragalus pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC192855  Astragalus pulsiferae var. pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen East slope of Shaffer Mtn. Comment
  JEPS107291  Astragalus pulsiferae var. pulsiferae Lowell Ahart, John Dittes 2005-6-1 11871 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  RSA201487  Astragalus pulsiferae var. pulsiferae J. T. Howell 1955-7-19 30818 Lassen East side of Beckwourth Pass 1493 Comment
  UC372929  Astragalus pulsiferae var. pulsiferae Marcus E. Jones, A. M. 1897-6-19 Lassen Chat 1615 Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  HSC82244  Astragalus purshii var. lectulus Thomas W. Nelson, Jane P. Nelson 1980-7-6 5989 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC194088  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Perkin's Ranch, top of Diamond Mt., Susanville 2225 Comment
  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-BC194091  Astragalus purshii var. purshii Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  POM45166  Astragalus purshii var. tinctus T. S. Brandegee 1892-6-23 s.n. Lassen Honey Lake Comment
  UC13456  Astragalus purshii var. tinctus L. T. Stephenson Sept., 1897 Lassen Chat Comment
  SEINET10490025  Astragalus purshii var. tinctus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17789 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridentata pinyon pine Jeffery pine along high ridge and sandy wash. 1402 Comment
  UCD105481  Astragalus whitneyi B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  UCD105490  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 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
  CAS-BOT-BC200868  Astragalus whitneyi var. confusus James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-24 4136 Lassen About 3 mi. s. of Adin on hwy. #139 1371 Comment
  SEINET3025898  Astragalus whitneyi var. sonneanus Marcus E. Jones 1897-6-28 Lassen Top of Diamond Peak, Susanville. Perkin's Ranch. 2230 Comment
  UC769845  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  UCD50220  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  UCD97425  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  NY652204  Atriplex truncata G. Schoolcraft 1998-7-21 2334 Lassen Near Phone Spring south of Rush Creek 1402.1 Comment
  UC1037136  Avena fatua Leo Whitney 1935-5-27 3121 Lassen Bieber Comment
  UC1924265  Avena fatua Debra Valov 2004-6-9 2004265 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC106487  Balsamorhiza hookeri Betty J. Hammerly 1941-6-21 51 Lassen 8 miles SE of Likely on Blue Lake Road Comment
  UC579779  Balsamorhiza hookeri David D. Keck and J. Clausen 1935-6-24 3747 Lassen 2 mi s of Ravendale 1464 Comment
  CAS-BOT-BC106492  Balsamorhiza hookeri Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville State Hwy #36 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
  HSC100313  Balsamorhiza hookeri var. hirsuta Chris Boever, Ed Lutz and Wendi Lutz 2010-7-7 370102 Lassen On Co. Rd. 1, S from Cedarville, take gravel rd. 15 mi. to Tuledad Canyon Road. 1823 Comment
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May 1 2020
  SEINET10534911  Balsamorhiza incana Billy Joe Cox 1971-6-2 Cox 3102 Lassen 4 mi. S of Adin along CA Hwy. 139 in basalt-clay; valley floor in Artemisia. 1341 Comment
  SEINET10924972  Balsamorhiza sagittata Katherine L. Morris, Douglas G. LeDoux; David B. Dunn 1973-5-25 Morris 216 Lassen Collected 2.6 mi. W of Susanville, on U.S. 36, in an area of Pinus jeffreyi and Purshia. Comment
  CAS-BOT-BC16435  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49464 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1776702  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, Hwy 139 and Eagle Lake Road intersect 1493 Comment
  SEINET3872219  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake.; 0 1559 Comment
  UC1191423  Bassia hyssopifolia Verne Grant and Irving Schneider 1947-9-6 8390 Lassen near Wendel (irrigation ditch w of Fleming Ranch Headquarters) Comment
  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
  UCD97537  Bassia hyssopifolia E. K. Balls; P. C. Everett 1952-10-10 18137 Lassen 0.7 mi. e. of Standish, Hwy. 395, between Susanville and Alturas. 1249 Comment
  CDA31539  Beckmannia syzigachne T. C. Fuller 1963-6-1 10625 a Lassen 3.2 mi south of Pittville on east side of road to Susanville. 0 Comment
  HSC9041  Beckmannia syzigachne Fred Kindel 1955-6-24 Lassen Mt.Meadows Reservoir Comment
  UC1100216  Beckmannia syzigachne Herbert L. Mason 1947-7-9 13299 Lassen 5 mi e Bieber Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  UCD56798  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  CDA20580  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau; Anderson Ranch (southern Lassen County). 1478 Comment
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Aug 25 2008
  CHSC66844  Berula erecta Vernon H. Oswald 1996-9-21 8285 Lassen Modoc Plateau. Ca. 3 mi W of Hwy. 139 on the road to Eagle Lake Biological Station, ca. 10 mi (air) N of Susanville. 1508 Comment
  UC1191930  Berula erecta Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 a Lassen 1 mi s of Doyle (Long Creek); Long Creek Comment
  HSC95198  Betula glandulosa Gordon Leppig, J. Cromwell 1997-7-26 599 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS32533  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near, between Jonesville and Standish Honey Lake Comment
  UC30552  Bidens cernua J. Burtt Davy Jun 17 1897-Jun 24 1897 3309 Lassen Tule Confederacy Comment
  CHSC96712  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CHSC117222  Blepharipappus scaber Lowell Ahart; John Dittes 2016-6-7 20977 Lassen 20 yards west of the pond, along the road to the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  POM223583  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3733 Lassen 2 miles south of Ravendale. 1463 Comment
  UC87371  Blepharipappus scaber T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CDA10533  Blepharipappus scaber T. C. Fuller 1963-6-1 10620 Lassen Road to Susanville, 2.0 miles south of Pittville. 0 Comment
  RSA647521  Blepharipappus scaber Marion P. Harthill 1972-6-17 806 Lassen Ravendale. 1646 Comment
  UC1537354  Blepharipappus scaber Gordon H. True Jr. 1937-7-10 790 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1493 Comment
  CAS-BOT-BC16826  Boechera Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16325 Lassen Along southern shore of Eagle Lake. Comment
  CAS-BOT-BC25512  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-7-31 50039 Lassen Sierra Nevada. Diamond Range on road from Janesville to Thompson Peak. 1737 Comment
  UC1553390  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 mi west of Madeline, CA. 1584 Comment
  CHSC12965  Boechera sparsiflora K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5815 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CHSC99127  Boechera sparsiflora Lowell Ahart; John Dittes 2008-6-19 14885 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
  SEINET10453123  Boisduvalia densiflora Mary Susan Taylor 1982-8-19 Taylor 5032 Lassen T27N R14E ne sec 36. Milford quad. Along dirt rd 326, ca. 0.5 mi e of its jct with Milford Grade, ca. 1 air mi se of Milford. In ditch on roadside; 4300 ft. 1310 Comment
  POM253280  Boisduvalia macrantha A. A. Heller 1938-7-28 15295 Lassen About a mile east of Westwood 1524 Comment
  SD8418  Boykinia major Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CAS-BOT-BC149498  Bromus briziformis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile west of Karls. Comment
  CHSC36451  Bromus briziformis Susan H. Euing 1982-6-2 5 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of Hwy 139 and Ravendale Rd. Comment
  CHSC7689  Bromus briziformis Beverley J. Wise 1969-5-16 125 Lassen 34.5 mi. S. E. of Susanville on Co. Rd 320. (Stacey) 1584 Comment
  SEINET8506610  Bromus briziformis D. W. Taylor 2005-6-29 19380 Lassen Piute Creek, 3 miles West from western edge, Susanville 1311 Comment
  UCD32673  Bromus briziformis Beecher Crampton 1954-7-6 2077 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  CAS-BOT-BC149500  Bromus briziformis Clare B. Hardham 1961-6-17 7507 Lassen Susanville Aturas Road. Lava Flows. Route 395. 1432 Comment
  SEINET3921581  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 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
  UC1024689  Bromus carinatus var. carinatus Leo Whitney 1933-7-15 2156 Lassen 16 mi w of upper end of Eagle Lake (Lassen National Forest, Harvey Mountain); Lassen National Forest, Harvey Mountain Comment
  UC1137778  Bromus carinatus var. carinatus August L. Hormay 1934-6-30 Lassen Lassen National Forest, Harvey Mountain, Lassen Forest and Range Experiment Station Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  CHSC66419  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1996-6-17 7788 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  JEPS109643  Bromus commutatus Dean W. Taylor 2002-6-21 18169 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  POM364020  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  UC1037118  Bromus commutatus Leo Whitney 1934-7-22 2249 Lassen 5 mi w of lower end of Eagle Lake (Lassen National Forest, Antelope Mountain); Lassen National Forest, Antelope Mountain 1981 Comment
  CDA1829  Bromus japonicus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 Comment
  JEPS97404  Bromus japonicus Vernon H. Oswald and L. Ahart 1995-6-19 6874 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  CAS-BOT-BC162178  Bromus orcuttianus John Thomas Howell 1934-7-10 12554 Lassen Black's Mountain. Comment
  CAS-BOT-BC162180  Bromus orcuttianus John Thomas Howell 1976-7-19 51973 Lassen Sierra Nevada. On Gold Run Creek southwest of Susanville. 1386 Comment
  CHSC44553  Bromus tectorum Lowell Ahart; John Thomas Howell 1974-7-9 520 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  UC1024827  Bromus tectorum Leo Whitney 1935-7-12 3233 Lassen Lassen National Forest, Camp 10, Fruit Grower's Supply Company Lassen National Forest; , Camp 10, Fruit Grower's Supply Compa Comment
  UC1131328  Bromus tectorum A. Simontacchi 1940-5-28 783 Lassen 3.2 mi wsw of Patterson Mountain (Lassen National Forest); Lassen National Forest 1767 Comment
  CAS-BOT-BC438314  Calandrinia ciliata T. L. Secrest 1961-6-8 s.n. Lassen Edge of McCoy Flat Reservoir, ca. 14 mi. n. of Westwood Comment
  HSC36104  Callitriche fassettii Ken Mahouski 1973-4-29 Lassen Along Hat Creek at Hat #2 power house forebay, near Cassel. Comment
  UCD149989  Callitriche palustris William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  UC1101514  Callitriche verna Verne Grant and Irving Schneider 1947-9-6 8385 Lassen creek midway between Eagle Lake and Susanville Comment
  CHSC12475  Calocedrus decurrens Carol Weld 1969-6-20 12 Lassen Forest Service number 516.2. 1676 Comment
  UC119888  Calochortus bruneaunis T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  CHSC4921  Calochortus leichtlinii L. G. Bennett 1967-6-24 24 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  RSA166662  Calochortus leichtlinii H. Dearing, M. Dearing 1938-7-1 2237 Lassen Top of pass west of Susanville 1763 Comment
  CAS-BOT-BC483437  Calochortus macrocarpus Amy Rhinehart 1895-6-1 s.n. Lassen Unspecified Comment
  SEINET10675935  Caltha leptosepala var. biflora Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A21. 1920 Comment
  CHSC30571  Calyptridium umbellatum Sori H Shad 1970-6-25 32 Lassen Found E. 2 mile past Murrer's Meadow on N. side of road in rocky soil. 1524 Comment
  CHSC34600  Calyptridium umbellatum Cindy Prouty 1978-7-10 17 Lassen Colman L. area, SE of Eagel L. 1962 Comment
  CHSC80256  Calyptridium umbellatum Jeanne Boze 1981-6-13 111 Lassen On roadbed and northeast slope of Gallatin Peak. 1950 Comment
  UC1523751  Calyptridium umbellatum G. Schoolcraft 1981-5-5 374 Lassen Ash Valley 1548 Comment
  UC420619  Calyptridium umbellatum Franklin P. Nutting Lassen Pine Creek Comment
  SEINET11931593  Calyptridium umbellatum Unknown 1978-1 5 Lassen Colman L., S of Eagle L 1963 Comment
  SEINET194898  Calyptridium umbellatum A. A. Heller 1938-6-22 15139 Lassen 1 mi E of Westwood along St Hwy 36 1524 Comment
  UC726042  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 mi e of Westwood 1493 Comment
  CAS-BOT-BC497557  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles east of Westwood, In the Arid Transition Life Zone 1463 Comment
  RSA0009459  Camassia quamash subsp. breviflora Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC30609  Camassia quamash subsp. quamash G. A. Brown 1975-6-30 10 Lassen Across from Coleman Lake. 1920 Comment
  SFV17867  Camassia quamash subsp. quamash J. D. Dilley 1998-7-14 367 Lassen Sierra Nevada Along CA-44, 1 mile west of Bogard Work Center; 29 miles northwest of Susanville. 1707 Comment
  CHSC93245  Camelina microcarpa John Dittes; Scott Chamberlain 2004-6-28 1019 Lassen Modoc Plateau; Long Valley; ca. 4.4 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.6 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; near road. 1465 Comment
  OBI76938  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along hwy 395 ca. 6.6 mi S of Karlo Rd quad 1220 Comment
  POM253236  Camissonia boothii subsp. alyssoides A. A. Heller 1938-6-23 s.n. Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  RSA144902  Camissonia claviformis subsp. cruciformis G. I. Stage, R. Thorp 1959-6-20 59 -116 Lassen 9.6 miles north of Litchfield Comment
  NY851245  Camissonia claviformis var. cruciformis G. Schoolcraft 1989-5-16 1875 Lassen West of Highway 395 ca. 2 miles south of Karlo turnoff 1356 Comment
  NY851343  Camissonia contorta LeDoux 1973-5-25 870 Lassen Collected 3 miles north of Milford on Hwy 395 at Honey Lake campgrounds 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
  NY852081  Camissonia tanacetifolia N. H. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  HSC63834  Camissonia tanacetifolia Teresa Prendusi 1980-5-16 Lassen 6 mi. S of Ravendale and 1 mi. W of Hwy. 395 Comment
  RSA132679  Camissonia tanacetifolia I. L. Wiggins, Dorothy Wiggins 1961-6-11 16364 Lassen Along California State Highway 139, ca. 1 mile N of Grasshopper Valley. Comment
  CAS-BOT-BC160833  Camissonia tanacetifolia subsp. quadriperforata James Jokerst 1983-5-31 1787 Lassen Near Madeline Plains 1583 Comment
  CAS-BOT-BC160873  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-6-10 11883 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC160870  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1963-5-29 18423 Lassen U. S. Highway 395, 11.1 miles north of Litchfield Comment
  CHSC116087  Capsella bursa-pastoris Lowell Ahart; John Dittes 2015-7-13 20308 Lassen About 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117199  Capsella bursa-pastoris Lowell Ahart; John Dittes 2016-6-7 20980 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS87505  Cardamine breweri Vernon H. Oswald and Lowell Ahart 1993-8-3 5743 Lassen ca 13 mi (air) n. Lake Almanor (s.w. edge Cooper Swamp located e. of Silver Lake just e. of the Caribou Wilderness); Cooper Swamp 1932 Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  UC1494954  Cardamine nuttallii Reed C. Rollins and Kathryn W. Rollins 1981-5-30 81166 Lassen Gold Run Road toward Sky Line Drive 10 mi s Susanville; s of Susanville Comment
  JEPS120879  Carex Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18770 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS28340  Carex abrupta George W. Gillett 1957-7-21 867 Lassen 300 yards n trail summit (Juniper Lake - Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  CHSC58858  Carex angustata Vernon H. Oswald; Lowell Ahart 1992-7-16 5115 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  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
  SEINET7549702 Image available Carex angustata George W. Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake. 1850 Comment
  UC2015835  Carex breweri Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4446 Lassen Lassen Volcanic National Park. Lassen Peak. Comment
  JEPS107438  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 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
  RSA122792  Carex douglasii G. A. Fischer, I. H. Johnson 1933-7-12 F- 234 Lassen Patterson Flat. 1738 Comment
  SEINET10437847  Carex douglasii B. L. Wilson, P. Zika 2011-8-7 16803 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  UC1736284  Carex douglasii Dean W. Taylor 1974-6-14 3716 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC773860  Carex douglasii L. R. Short and Wm. Gansberg June 1936 S- 419 Lassen Burgess Spring Experiment Range 1856 Comment
  UC803  Carex douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3289 Lassen Honey Lake Valley Comment
  CAS-BOT-BC19979  Carex feta John Thomas Howell 1974-7-10 50557 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  JEPS94473  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1997-5-27 8510 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling road on the north); Forest Route 38N04 1560 Comment
  CHSC77247  Carex fracta G. Schoolcraft 1997-7-30 Lassen Slope of Diamond Mtn. 1889 Comment
  CAS-BOT-BC22275  Carex hassei John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49477 Lassen Elysian Valley, west of Janesville. 1325 Comment
  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
  CHSC61065  Carex heteroneura var. heteroneura Vernon H. Oswald; Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  UC190415  Carex hoodii M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  HSC103667  Carex lemmonii Thomas W. Nelson, Jane Nelson 1985-8-10 8006 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC31439  Carex leporinella Hans Leschke 1945-9-15 s.n. Lassen Near Twin Lakes, Mt. Lassen Comment
  JEPS97331  Carex limosa Vernon H. Oswald 1995-8-26 7217 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC1133499  Carex microptera A. Simontacchi 1940-7-3 917 Lassen 3.5 mi wsw Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  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
  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
  CHSC66411  Carex nebrascensis Vernon H. Oswald; Lowell Ahart 1996-6-17 7813 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 the trail at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  UCD140678  Carex nebrascensis Beecher Crampton 1964-6-26 7077 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  UC1133448  Carex petasata Robert W. Gardner 1939-6-28 G- 32 Lassen Burgess Spring Experimental Range, Halls Flat Quadrangle Burgess Spring Experimental Range Comment
  CAS-BOT-BC118742  Carex preslii Alice Eastwood; John Thomas Howell 1940-6-16 8338 Lassen Janesville Comment
  JEPS109091  Carex preslii D. W. Taylor 2008-6-19 20226 Lassen Unnamed meadow equidistant between Papoose Meadwo and Mahogany Lake Comment
  CHSC54424  Carex raynoldsii Vernon H. Oswald 1991-6-25 4695 Lassen Lassen Volcanic National Park. Butte Lake-Snag Lake Trail, just south of its junction with Butte Lake-Widow Lake Trail, in the northeast corner of the park. 1842 Comment
  UC1108040  Carex scopulorum var. bracteosa E. B. Copeland 1932-8-15 Lassen King's Creek Meadow, at road crossing Mount Lassen 2225 Comment
  UC1142962  Carex straminiformis A. L. Hormay 1941-6-19 25 Lassen Squaw Valley Lassen National Forest 1737 Comment
  CAS-BOT-BC116619  Carex subfusca George Wilson Gillett 1957-7-26 913 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  SD130912  Carex subfusca John Thomas Howell, Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada Mountains; Diamond Range; Gold Run Creek Road south of Susanville; transition zone forest in areas of granitic rock. 1584 Comment
  UC2031888  Carex subfusca Nick Otting and Bruce Newhouse 2003-7-15 680 Lassen Sierra Nevada Mountains, Diamond Mountain, 1700 feet southeast of summit, 8 air miles south-southwest of Susanville. Comment
  CAS-BOT-BC116607  Carex subfusca Clare B. Hardham 1971-8-22 18383 Lassen Diamond Mountain streambed. 2133 Comment
  CAS-BOT-BC116612  Carex subfusca Hans Leschke 1957-9-21 1528 Lassen Trail Butte Lake-Cinder Cove at cold spring. 1859 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
  UC1142963  Carex utriculata A. L. Hormay 1941-6-17 24 Lassen near Westwood (Meadow Lake); Lassen National Forest 1615 Comment
  SEINET7579515 Image available Carex utriculata George W. Gillett 1957-7-22 885 Lassen Lassen Volcanic National Park, Snag Lake, near campsite at south end of lake. 1850 Comment
  HSC95273  Carex vesicaria Gordon Leppig 1998-7-12 942 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95278  Carex vesicaria Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 694 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95282  Carex vesicaria Gordon Leppig 1998-6-12 932 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1142938  Carex vesicaria A. L. Hormay 1941-6-18 1 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  CHSC93559  Castilleja angustifolia Lowell Ahart; John Dittes 2005-6-2 11978 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the interesection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
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Oct 20 2009
  CHSC93566  Castilleja angustifolia Lowell Ahart; John Dittes 2005-6-2 11941 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. 1601 Comment
  CHSC67068  Castilleja applegatei Willis Ball 1969-6-20 20 Lassen Found approx. 2 mls. down from Dean's Meadow going towards 5 pts. 1828 Comment
  CAS-BOT-BC249614  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-21 44 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  JEPS107871  Castilleja applegatei subsp. pinetorum Lowell Ahart, John Dittes 2005-6-2 11929 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
  JEPS117583  Castilleja applegatei subsp. pinetorum Lowell Ahart, John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  UC1012183  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Susanville; Route 36 1371 Comment
  UC1137290  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC199398  Castilleja applegatei subsp. pinetorum Franklin P. Nutting Lassen Dixie Mts. Comment
  CAS-BOT-BC243710  Castilleja applegatei var. pinetorum Clarence R. Quick 1961-6-21 61 -31 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CHSC99527  Castilleja campestris subsp. campestris Lowell Ahart; John Dittes 2008-6-20 14978 Lassen Edge of vernal pools, 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
  JEPS62838  Castilleja campestris subsp. campestris John Weiler 1970-7-6 70188 Lassen 3.6 mi s Madeline (along Highway 395) 1371 Comment
  JEPS66447  Castilleja campestris subsp. campestris L. R. Heckard and P. Rubtzoff 1971-8-4 2708 Lassen about 10 mi n Termo (along U.S. Hwy 395) Comment
  UC725999  Castilleja campestris subsp. campestris A. A. Heller 1938-6-23 15218 Lassen between Termo and Madeline (along U.S. Hwy 395) 1615 Comment
  SEINET10549093  Castilleja chromosa Mary Susan Taylor 1982-5-29 Taylor 4568 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  UC103164  Castilleja lacera T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  UC199376  Castilleja lacera Milo S. Baker 1900-1 Lassen Milford Comment
  JEPS85915  Castilleja lemmonii L. R. Heckard with R. Bacigalupi 1980-6-12 5260 Lassen ne of Westwood (near golf course) 1554 Comment
  OBI75870  Castilleja lemmonii Anthony Baniaga 2011-8-10 495 Lassen Lassen Natl Forest. Barnes Flat. Swain Mtn quad. T30N R8E sec 9 SE of SE 1769 Comment
  CHSC4817  Castilleja linariifolia R. Carter 1967-7-16 617 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca 12 mi n of Susanville, on s side of rd. Comment
  JEPS17633  Castilleja miniata Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5402 Lassen 2.3 mi s of and below Patterson Ranger Station (meadowy spots along East Creek on grade, 0.8 mi s of Lassen-Modoc County line, s-end of Warner Mts); Warner Mts., East Creek 2011 Comment
  UC1523790  Castilleja miniata Gary Schoolcraft Aug 1979 Lassen Goodrich Meadow 1554 Comment
  CAS-BOT-BC244888  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen meadows foot of Lassen Butte. Lassen Butte Region Comment
  CAS-BOT-BC244891  Castilleja miniata anonymous 1927-7-1 40 Lassen Bogard R. S. pasture 1712 Comment
  RSA46750  Castilleja miniata J. T. Howell 1934-6-10 11871 Lassen Janesville Comment
  CDA18277  Castilleja minor var. minor G. D. Barbe 1974-8-2 1943 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS17615  Castilleja pilosa Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5410 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadow, s end of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS22193  Castilleja pilosa Rimo Bacigalupi with S. Galen Smith 1957-6-28 6004 Lassen 5.9 mi s Madeline 1615 Comment
  RSA637591  Castilleja pilosa Michael A. Vincent 1999-6-9 8584 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CHSC99131  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-19 14874 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
  JEPS124373  Castilleja tenuis Lowell Ahart, John Dittes 2015-7-13 20314 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS79149  Castilleja tenuis L. R. Heckard with R. Bacigalupi 1980-6-12 5252 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  RSA0059451  Castilleja tenuis Lowell Ahart, John Dittes 2011-6-20 17499 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1143036  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen National Forest 1743 Comment
  UC1523759  Castilleja tenuis Gary Schoolcraft 1982-6-21 714 Lassen Ash Valley 1584 Comment
  UC27205  Castilleja tenuis J. Burtt Davy Jun 17 1897-Jun 24 1897 3359 Lassen Adobe meadows; Honey Lake Valley Comment
  RSA0027351  Caulanthus major John F. Emmel 1994-7-17 1328 Lassen Summit area of Observation Peak. 2378 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
  CAS-BOT-BC48706  Ceanothus cordulatus John Thomas Howell 1974-7-9 50480 Lassen Coniferous forest between Susanville and SW end of Eagle lake 1828 Comment
  SEINET5339273  Ceanothus cuneatus W. Priest 1956-4-27 s.n. Lassen 20 mi south of Lassen Park turnoff, Ca. Hwy 36. 762 Comment
  CAS-BOT-BC52054  Ceanothus prostratus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16318 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood 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
  UC1071532  Ceanothus velutinus A. Simontacchi 1940-6-15 866 Lassen 1.0 mi ssw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC52440  Ceanothus velutinus var. velutinus Brighton C. Cain 1925-8-24 115 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  CAS-BOT-BC276999  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  RSA157739  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Hwy. 395 to Madelaine, 1.6 miles north of Termo Comment
  CAS-BOT-BC106028  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 12 Lassen Roadside and fields Cramer Ranch, Big Valley Comment
  UC1181382  Centaurea virgata subsp. squarrosa Darwyn Briggs 1960-7-28 Lassen Big Valley 1264 Comment
  SEINET13331314 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  CAS-BOT-BC279592  Centromadia pungens subsp. pungens Gordon H. True 1973-8-22 7656 Lassen North shore of Honey Lake, ca. 5 miles east of Janesville and just west of Hartson Reservoir 1219 Comment
  CAS-BOT-BC388152  Cerastium fontanum Louella Bass 1973-6-3 90 Lassen Elysian Valley. West side of Ridge Meadow 1325 Comment
  CAS-BOT-BC400183  Ceratophyllum demersum D. Toren; B. Trowbridge 1975-6-19 5183 Lassen Blue Lake 1828 Comment
  UCD35729  Cercocarpus ledifolius Beecher Crampton 1960-6-18 5710 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  JEPS126473  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -063 Lassen Take 139 north to Fredonyer Peak. Comment
  JEPS127358  Cercocarpus ledifolius var. intermontanus Alia Johnson, Jillian Sarazen 2016-8-24 CA 350 -79 Lassen 139 N. Right turn on load leading to Fredonyer Mountain. Comment
  CAS-BOT-BC143806  Cercocarpus ledifolius var. ledifolius George W. Gillett 1957-7-26 902 Lassen Butte Lake 1844 Comment
  UC764012  Cercocarpus ledifolius var. ledifolius R. F. Hoover 1940-9-21 4604 Lassen 4 mi w of Susanville Comment
  UC773879  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
  CAS-BOT-BC276615  Chaenactis douglasii var. douglasii Louella Bass 1973-6-14 104 Lassen Elysian Valley 1325 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
  UCR7839  Chaenactis douglasii var. douglasii Marilyn Malin 1968-6-19 250 Lassen Eagle Lake Biological Station[Chico State Biological Station], 50 ft. NE of the A-Frame cabin 59 Comment
  CHSC19727  Chamaebatiaria millefolium Mary E. Meyer 1973-7-7 14 Lassen Located west of ELBS water tower. Comment
  CHSC4857  Chamaebatiaria millefolium R. Carter 1967-7-13 588 Lassen On the rd to Eagle Lake, Biology Station and Willow Creek. 1584 Comment
  CHSC4937  Chamaebatiaria millefolium W. Lessig 1967-7-15 30 Lassen 1/8 mi se of Eagle Lake Biology Station. 1554 Comment
  UC526157  Chamaebatiaria millefolium John Thomas Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  UC747012  Chamaebatiaria millefolium G. Thomas Robbins 1945-10-6 2151 Lassen nw slope ofCrater Lake Mountain, Lassen National Forest Crater Lake Mountain; Lassen National Forest, Crater Lake Mountain 1981 Comment
  CHSC21229  Chamaesaracha nana Robert A. Schlising 1974-6-20 3145 Lassen Near Lower Dry Lake, about 3 mi E of Eagle Lake. Comment
  UC1542162  Chamaesaracha nana Paul Covel 1986-6-6 Lassen e of Chester (Lake Almanor dike); Lake Almanor Comment
  UC1776692  Chamaesaracha nana G. Schoolcraft 1999-6-29 2849 Lassen E. edge of Madeline Plains about 9 miles NE of Ravendale, CA 1615 Comment
  CHSC112769  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18847 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
  CHSC58840  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1992-7-16 5114 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. Beds of creek and reservoir. 1691 Comment
  JEPS52357  Chamaesyce serpyllifolia Brown and Wieslander 1922-7-7 90 Lassen Eagle Lake, Martin Springs Comment
  JEPS128409  Chamerion angustifolium subsp. circumvagum Catherine Bauer with Ellen Bauer Benson 2017-8-16 17 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  JEPS39306  Chamerion angustifolium subsp. circumvagum Brown and Wieslander 1922-7-23 37 Lassen Martin Sprs. Eagle Lake Comment
  POM103115  Chenopodium atrovirens Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CDA20579  Chenopodium atrovirens S. McCullough 2005-8-22 s.n. Lassen Cascade Range; Lassen Volcanic National Park. 0 Comment
  UCD150397  Chenopodium glaucum var. salinum William Anderson 1963-7-22 s.n. Lassen Hartson Reservoir. Comment
  RSA756362  Chenopodium hians Barbara Ertter 1988-7-25 7871 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2226 Comment
  CHSC6236  Chimaphila umbellata P. Balch 1955-7-22 Lassen Roadside between Eagle Lake and Pittville Road. 1676 Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. 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
  CAS-BOT-BC36277  Chrysolepis sempervirens John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49413 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS28679  Chrysolepis sempervirens George W. Gillett 1957-7-26 905 Lassen point of rocks w Butte Lake outlet (and above trail); Lassen Volcanic National Park 1844 Comment
  SEINET7450655 Image available Chrysopsis villosa var. minor R. R. Halse 2010-8-26 8091 Lassen Along State HWY 70 at Beckwourth Pass about 4.3 miles west of its junction with US HWY 395 or 1.6 miles east of Sierra Valley 1584 Comment
  CAS-BOT-BC140657  Chrysothamnus humilis Clare B. Hardham 1971-8-22 18391 Lassen Diamond Mountain 2346 Comment
  POM212177  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles form Bieber on the road to Alturas 1268 Comment
  RSA3395  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile east of Termo 1646 Comment
  UCD130269  Chrysothamnus viscidiflorus Beecher Crampton 1954-5-11 1883 Lassen Beckwourth Pass. 1588 Comment
  CAS-BOT-BC100757  Chrysothamnus viscidiflorus subsp. puberulus Ralph K. Gierisch 1968-7-11 3349 Lassen Lassen National Forest, Harvey Valley 1676 Comment
  CAS-BOT-BC105904  Chrysothamnus viscidiflorus subsp. viscidiflorus Elmer I. Applegate 1897-6-3 858 Lassen South end of Madeline Plains Comment
  CAS-BOT-BC105907  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  SEINET5727103 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7713 Lassen Collected along Forest Road 37N11, off CA Hwy 139.; Modoc National Forest 1555 Comment
  UC527342  Chrysothamnus viscidiflorus subsp. viscidiflorus C. B. Wolf 1931-9-4 Lassen 2.6 mi from Bieber (on the road to Alturas); Big Valley 1267 Comment
  POM35788  Cichorium intybus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  POM352119  Cichorium intybus George Willet 1935-6-28 s.n. Lassen Susanville Comment
  SEINET10940912  Cirsium Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 475 Lassen Approx. 2 mi. N of Susanville, across Calif. Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  JEPS128416  Cirsium andersonii Catherine Bauer with Ellen Bauer Benson 2017-8-16 23 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-BC277918  Cirsium canescens T. C. Fuller 1966-7-22 14981 Lassen E. of rd. at e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CAS-BOT-BC278008  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8307 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC278011  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen 7 mi N/road to Karlo Comment
  SD113205  Cirsium cymosum Darley F. Howe 1964-7-31 3947 Lassen Near east bank of Blue Lake, Warner Mountains, Modoc National Forest. 1890 Comment
  JEPS30797  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13303 Lassen along US Hwy 395 8.0 mi n Madeline Comment
  CAS-BOT-BC278090  Cirsium douglasii var. breweri Hans Leschke 1960-9-8 1803 Lassen Lassen Volcanic National Park. Little Hot Springs Valley 2225 Comment
  CDA1526  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1528  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC280422  Cirsium ochrocentrum Lee Wheeler 1950-10-1 s.n. Lassen Clarence Hoffman Ranch Comment
  CAS-BOT-BC280429  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14199 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CAS-BOT-BC286306  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
  JEPS59259  Cirsium scariosum Brown and Wieslander 1922-7-23 91 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  CDA1560  Cirsium scariosum var. americanum T. C. Fuller 1959-7-6 2979 -A Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  OBI63042  Cirsium scariosum var. americanum David J. Keil, with Kathleen A. Keil et al. 2004-7-9 30305 Lassen Along California Route 44 east of Shasta County line, just west of junction with forest road 32N21 to Butte Lake. Lassen National Forest. 43 deg. 38.615'N x 121 deg. 18.370'W 1615 Comment
  CDA20242  Cirsium undulatum G. D. Barbe 1984-8-2 4186 Lassen Madeline Plains; Just e of Westside Rd, 3 mi no f Termo-Grasshopper Rd., Madeline Plains, along e base of Dry Valley Ridge. 1615 Comment
  CAS-BOT-BC285730  Cirsium vulgare John Thomas Howell; Gordon H. True 1973-8-1 50160 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC439002  Cistanthe monosperma A. A. Heller 1938-6-4 15139 Lassen One mile east of Westwood 1524 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
  CAS-BOT-BC163420  Clarkia purpurea subsp. quadrivulnera Louella Bass 1978-7-11 78 -12 Lassen Elysian Valley 1325 Comment
  JEPS90014  Clarkia purpurea subsp. quadrivulnera Dean Wm. Taylor with Robert A. Price 1988-6-4 9770 Lassen 6 mi e of MacArthur (Fall River Valley along Highway 299 at crossing of Frazer Creek, Pit River Watershed); Fall River Valley, Highway 299 1036 Comment
  CAS-BOT-BC164864  Clarkia rhomboidea A. M. Vollmer; L. Beane 1953-7-1 35 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS43672  Clarkia rhomboidea Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  CHSC36439  Clarkia stellata Dave Leuck 1981-6-16 20 Lassen Subway Cave on Hwy 44. Comment
  CHSC64847  Claytonia rubra subsp. depressa Vernon H. Oswald 1995-6-26 6940 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  JEPS17868  Cleome platycarpa Rimo Bacigalupi with G. T. Robbins 1955-7-21 5430 Lassen 8 mi e U.S. Hwy. 395 (along Smoke Creek Ranch road, se part of Secret Valley); Secret Valley 1402 Comment
  JEPS79145  Cleome platycarpa L. R. Heckard with R. Bacigalupi 1980-6-11 5248 Lassen 11.3 mi. n. Litchfield (along U.S. 395, s. of Deep Creek crossing) 1463 Comment
  UC1567389  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen e end Skedaddle Mtns. (near stateline) 1493 Comment
Read comments
Aug 12 2008
  SEINET11986415  Cleome platycarpa N. H. Holmgren, Holmgrn, P. K. 1978-1 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi.) NE of Rye Patch Canyon summit, 1700 Comment
  RSA657118  Cleomella hillmanii G. L. Clifton 1995-5-24 34202 Lassen About 3/4 miles north of Calneva Lake. 1220 Comment
  CDA25308  Cleomella plocasperma T. C. Fuller 1980-8-6 20324 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  NY242362  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  NY242239  Cleomella plocasperma N. H. Holmgren 1978-6-13 8938 Lassen 2.7 km (1.7 mi) northwest of Wendel. 1250 Comment
  HSC68800  Collinsia grandiflora Gary Schoolcraft 1980-7-15 312 Lassen N ende of Nelson Corral Reservoir 1805 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
  JEPS107462  Collinsia parviflora Lowell Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS114656  Collinsia parviflora Lowell Ahart, John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS120877  Collinsia parviflora Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18737 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
  RSA0117240  Collinsia parviflora L. R. Short 1936-5-7 S- 344 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  SBBG12810  Collinsia parviflora A. I. Richardson 1961-5-30 5 Lassen 9 mi S of Eagle Lake 1402 Comment
  CHSC6198  Collomia grandiflora P. Collett 1946-6-24 Lassen Spalding's, Eagle Lake. 1554 Comment
  POM126992  Collomia grandiflora Franklin P. Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  HSC16917  Collomia grandiflora Jim Vaughn 1956-7-25 Lassen Drakesbad 1738 Comment
  POM146293  Collomia grandiflora J. B. Feudge 1740 Lassen Bank of Susan River. Susanville 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
  RSA122984  Collomia tinctoria L. R. Short, J. Warren 1936-6-10 s- 382 Lassen Burgess Spr. Exp. Range 1790 Comment
  SBBG58209  Collomia tinctoria E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 Comment
  RSA128290  Collomia tinctoria P. H. Raven, Otto T. Solbrig 1958-6-16 13255 Lassen Along State Highway 36, 0.9 miles east of summit of Fredonyer Pass Comment
  JEPS121290  Conium maculatum Lowell Ahart, John Dittes 2013-7-23 18901 Lassen W side of the road levee, about 80 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC6282  Convolvulus arvensis D. L. Stites 1967-7-1 141 Lassen 10 mi se of Eagle Lake Biology Station on Lower Murrer's Meadow. 1371 Comment
  CAS-BOT-BC286112  Conyza canadensis John Thomas Howell; Gordon H. True 1973-8-1 50154 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  POM33281  Conyza canadensis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC31437  Conyza canadensis J. Burtt Davy Jun 17 1897-Jun 24 1897 3393 Lassen borders of hot springs Amedee; Honey Lake Valley Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC762620  Cordylanthus ramosus R. F. Hoover 1940-10-5 4678 Lassen Secret Valley 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
  POM43083  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CAS-BOT-BC212207  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  UCD117317  Cornus sericea P. B. Schultz 1967-7-12 77 Lassen 14 miles southeast of Adin on State Highway 139. 1524 Comment
  CAS-BOT-BC383108  Cornus sericea subsp. sericea Andrew Townesmith; Karen M. Meyer 2007-7-20 839 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  CHSC68861  Cornus sericea subsp. sericea Vernon Oswald; Lowell Ahart 1997-6-24 8611 Lassen South of Susanville on the north of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  UC581214  Crepis acuminata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1736 Lassen on mountain above Red Rock (e-facing slope of gully) 1420 Comment
  UC581223  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1936-6-7 1763 Lassen ne slope of ridge near summit east of Red Rock 1818 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
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  CHSC64752  Crepis bakeri Vernon H. Oswald 1995-5-31 6796 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CAS-BOT-BC376483  Crepis bakeri subsp. cusickii G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-14 2331 Lassen Along road half way between Bogard Ranger Station and Harney Valley 1630 Comment
  SEINET10474584  Crepis bakeri subsp. cusickii Mary Susan Taylor 1982-5-29 Taylor 4562 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  CAS-BOT-BC291551  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-11 2328 Lassen Black Mountain 1 1/2 miles from summit 1889 Comment
  UC1609226  Crepis modocensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5614 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  SEINET10443269 Image available Crepis occidentalis M. Church 2016-5-5 7 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1443 Comment
  UC1776658  Crepis occidentalis G. Schoolcraft 1998-6-8 2731 Lassen Hills N. of Wendel 1402 Comment
  SEINET2142793 Image available Crepis occidentalis subsp. occidentalis Noel H. Holmgren, Holmgren, Patricia K. 1978-6-11 8929 Lassen upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale 1700 Comment
  UC581289  Crepis occidentalis subsp. occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1748 Lassen nw-facing slope of ridge e Red Rock 1600 Comment
  JEPS117488  Crepis occidentalis subsp. pumila Lowell Ahart, John Dittes 2010-7-31 16982 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
  POM203850  Crepis occidentalis subsp. pumila J. T. Howell 1934-6-10 11872 Lassen Janesville Comment
  CHSC4443  Crepis pleurocarpa K. R. Stern 1967-6-24 2421 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC5206  Crepis pleurocarpa 1944-6-28 Lassen Eagle Lake. 1584 Comment
  SEINET3158253  Cressa cretica M. E. Jones 1897-6-23 sn Lassen Amedee 1219 Comment
  HSC63831  Crypsis vaginiflora Teresa Prendusi 1980-8-27 Lassen Reservoir just NE of Susanville 1280 Comment
  UC78406  Cryptantha affinis T. S. Brandegee 1891-7-2 Lassen Susanville Comment
  HSC82192  Cryptantha ambigua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6043 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CHSC106580  Cryptantha circumscissa C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC25315  Cryptantha circumscissa Pauleen Broyles 1977-4-1 168 Lassen Roadway along Skedaddle Creek ca 8 km ene of Herlong. 1350 Comment
  CHSC60275  Cryptantha circumscissa P. V. Caldwell 1972-6-16 226 Lassen Eagle Lake. Base of w slope of Blk. Mtn. 1554 Comment
  POM368344  Cryptantha circumscissa Christopher Davidson 1975-6-7 2761 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCD55276  Cryptantha circumscissa Ellen Dean 2006-5-15 3091 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  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
  SJSU5810  Cryptantha intermedia J. W. Tilden 1958-6-27 1294 Lassen Madeline Comment
  JEPS103177  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley 1706 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
  CHSC68850  Cryptantha simulans Vernon Oswald; Lowell Ahart 1997-6-24 8594 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  SEINET12764836  Cryptantha torreyana var. torreyana Robert L. Johnson, Mikel R. Stevens 2015-7-10 3940 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 1563 Comment
  POM369283  Cynoglossum occidentale Anstruther Davidson s.n. Lassen Summit- Eagle Lake 1829 Comment
  CDA40496  Cynoglossum occidentale T. C. Fuller 1962-6-13 8997 c Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  CHSC117185  Cystopteris fragilis Lowell Ahart; John Dittes 2016-6-7 21007 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CAS-BOT-BC208395  Dalea ornata Gary Schoolcraft 1984-6-28 1280 Lassen NW of Shaffer Mtn., on the tablelands 1402 Comment
  SEINET230899 Image available Dalea ornata Arnold Tiehm, Raymond Evans: James Young 1984-6-7 8592 Lassen Flats on the Northwest side of Shaffer Mountain, 7.5 air miles North-northwest of Litchfield. 1372 Comment
  CAS-BOT-BC445517  Damasonium californicum Arnold Tiehm; Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line 1698 Comment
  CHSC117527  Damasonium californicum Lowell Ahart; John Dittes 2016-7-13 21138 Lassen South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC99298  Damasonium californicum Lowell Ahart; John Dittes 2008-6-20 14941 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1100148  Damasonium californicum Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 755 Lassen on Great Northern R.R. <Nubeiber> (Hwy. 299) Comment
  UC1483795  Damasonium californicum G. Schoolcraft 1979-6-26 98 Lassen Buckthorn Lake n.w. of Pyramid Lake 1889 Comment
  CAS-BOT-BC445514  Damasonium californicum 1927-7-15 72 Lassen Lassen National Forest. Feather Lake 1737 Comment
  SEINET6188248  Damasonium californicum R. F. Thorne, Larry E. De Buhr 1975-1 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 iles south of Modoc county line. 1615 Comment
  RSA0065387  Danthonia californica M. P. Harthill 1972-6-17 834 Lassen Madeline. 1676 Comment
  CAS-BOT-BC192329  Danthonia unispicata Ralph K. Gierisch 1968-7-11 3353 Lassen Lassen National Forest. Harvey Valley - Dixie Spr. 1706 Comment
  UCD61347  Danthonia unispicata L. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  JEPS18992  Deinandra lobbii Rimo Bacigalupi with L. R. Heckard 1957-8-18 6060 Lassen 3.1 mi ne Bieber (along U.S. Highway No. 299, nw Lassen County); Big Valley 1249 Comment
  JEPS79213  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CHSC93658  Delphinium andersonii Lowell Ahart; John Dittes 2005-6-2 11995 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  UC9127  Delphinium andersonii Mrs. C. C. Bruce June 1898 2238 Lassen Shumway Comment
  UCR244044  Delphinium andersonii Jim Andre 1993-6-1 19714 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  RSA0005299  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CHSC36435  Delphinium depauperatum Dave Leuck 1981-6-16 19 Lassen Meadow near turnoff to Caribou Wilderness Area on Hwy. 44. Comment
  CAS-BOT-BC9946  Delphinium nudicaule Mrs. Baldwin 1928-5-10 N. S. Lassen Coyote Flat. Comment
  CAS-BOT-BC217303  Delphinium nudicaule Elmer Ivan Applegate 1935-6-10 9478 a Lassen Lava Beds National Monument. S base of Caldwell Butte. Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  CAS-BOT-BC116052  Delphinium nuttallianum Albert Michael Vollmer; L. Beane 1953-7-1 84 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC36459  Delphinium nuttallianum Susan H. Euing 1982-6-4 13 Lassen Ca. 1/2 mi e of forest station rd 5.16 heading toward Murrers Upper Meadow. Comment
  HSC27052  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19165 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC194266  Deschampsia cespitosa subsp. cespitosa M. S. Baker; F. Nutting 1894-7-21 s.n. Lassen Eagle Lake Comment
  CHSC113927  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-8-20 19719 Lassen All over the meadow, 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. 1894 Comment
  JEPS28061  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen 100 yds. above lake near s. shore Snag Lake; Lassen Volcanic Nat'l Park, Snag Lake 1850 Comment
  UC1037258  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1933-8-2 106 Lassen ca. 8 mi. n.w. Eagle lake (Slate Creek, Lassen Nat'l Forest); Lassen Nat'l Forest, Slate Creek 1920 Comment
  CAS-BOT-BC192739  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50650 Lassen South and southeast of Diamond Mt. 2286 Comment
  CHSC117220  Deschampsia danthonioides Lowell Ahart; John Dittes 2016-6-7 20994 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
  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
  HSC9591  Deschampsia danthonioides D. E. Anderson 1969-7-5 4994 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UC1024890  Deschampsia danthonioides Leo Whitney 1935-5-27 3124 Lassen Bieber 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
  CAS-BOT-BC192746  Deschampsia danthonioides Clarence R. Quick 1962-6-17 62 25 A Lassen Swains Hole, a manmade pond in sagebrush flat south of Blacks Experimental Station 1554 Comment
  CAS-BOT-BC201810  Deschampsia elongata Clare B. Hardham 1971-8-22 18377 Lassen Diamond Mountain 2133 Comment
  CAS-BOT-BC201813  Deschampsia elongata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49467 Lassen 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
  UC1024651  Deschampsia elongata Leo Whitney 1933-8-3 2203 Lassen ca. 8 mi. n.w. Eagle Lake (Slate Creek); Lassen Nat'l Forest, Slate Creek 1920 Comment
  UC1131561  Deschampsia elongata A. Simontacchi 1940-7-3 919 Lassen 3.5 mi. w.-s.w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UC1609092  Descurainia incisa subsp. filipes Vernon H. Oswald and Lowell Ahart 1993-7-8 5656 Lassen ne edge Poison Lake (1.9 mi n of Hwy 44, Pittville Rd (Lassen 111, 36N01), ridge between railroad and lake) 1709 Comment
  UC1143030  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  CAS-BOT-BC43165  Descurainia pinnata subsp. brachycarpa A. Simontacchi 1940-6-4 808 Lassen 14.8 miles west of Harvey Mountain Lookout. 1813 Comment
  UC1776704  Descurainia sophia G. Schoolcraft 1993-5-25 2268 Lassen N and S of Smoke Creek road 1463 Comment
  RSA152597  Descurainia sophia I. L. Wiggins, Dorothy Wiggins 1961-6-11 16334 Lassen 13.5 miles E of Susanville. Comment
  POM109921  Dichelostemma multiflorum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin s Ranch. 1463 Comment
  CAS-BOT-BC500985  Dichelostemma multiflorum Ella Dales Cantelow 1935-6-8 s. n. Lassen 13 mi. w. of Bieber Comment
  CHSC14068  Dieteria canescens var. canescens K . R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5817 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  HSC82268  Dieteria canescens var. canescens Thomas W. Nelson, Jane P. Nelson 1980-7-6 5996 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1523714  Dieteria canescens var. canescens Gary Schoolcraft 1981-7-21 542 Lassen 1524 Comment
  CAS-BOT-BC153678  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CHSC25121  Diplacus mephiticus William R. Lessig 1967-6-24 6 Lassen Collected ca. 200 yds. N. E. of Eagle Lake Biological Station. 1524 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
  SEINET201638 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8454 Lassen 25 mi NW of Reno Comment
  SBBG15309  Diplacus torreyi H. and M. Dearing 1938-7-1 2245 Lassen 17 mi W of Susanville Comment
  CAS-BOT-BC208722  Distichlis spicata G. Schoolcraft 1986-9-10 1675 Lassen Along N. shore of Eagle Lake Comment
  CHSC115787  Distichlis spicata Lowell Ahart; John Dittes 2015-7-14 20333 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  CHSC91302  Distichlis spicata Lowell Ahart; John Dittes 2005-6-2 11922 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  RSA647537  Distichlis spicata Marion P. Harthill 1972-6-18 804 Lassen Litchfield. 1311 Comment
  UCD64451  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock. 1341 Comment
  SACT001015  Distichlis spicata var. stricta Malcolm Nobs, S. Smith 1949-7-22 Lassen Both staminate and pistillate, forming a dense turf around high water mark, alkaline. Comment
  SD7836  Dodecatheon Mrs. R. M. Austin August 1882 Lassen Kings Valley Comment
  CAS-BOT-BC136179  Dodecatheon alpinum Wayne Roderick 1969-6-14 s.n. Lassen Creek above Blue Lake 1524 Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  HSC17851  Dodecatheon alpinum Jim Vaughn 1956-8-11 Lassen Horseshoe Lake, Mt. Lassen National Park 1982 Comment
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Apr 28 2013
  UC559942  Dodecatheon conjugens Leo Whitney 1935-6-11 3225 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  SEINET8561548  Dodecatheon conjugens M. J. Williams 1969-5-24 s.n. Lassen Ca 0.5 mile N of Bogart Ranger Station. Comment
  UC1137648  Dodecatheon pulchellum A. Simontacchi 1940-5-10 695 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 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
  POM312397  Downingia bacigalupii Verne Grant, Irving Schneider 1947-7-31 8209 Lassen Irrigation ditch NE quarter of George Williams section 19, Madeline Plain. Comment
  UC1191995  Downingia bacigalupii Verne Grant and Irving Schneider 1947-7-31 8209 Lassen ne quarter George Williams section 19; Madeline Plain Comment
  UCD55038  Downingia bacigalupii Gerald Dickinson 1963-7-3 73 Lassen U.S. Highway 299; 1 mile west of Bieber. 1249 Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  UC803945  Downingia bicornuta var. bicornuta G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4005 Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  UC1536877  Downingia elegans G. H. True 1936-6-25 527 Lassen Harvey Valley 1706 Comment
  SEINET8733890 Image available Downingia elegans Helen K. Sharsmith 1955-1 4512 Lassen adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1219 Comment
  CAS-BOT-BC266472  Downingia laeta Wm. Anderson 1960-6-16 s.n. Lassen Along county road 0.25 mile S of Mapes Ranch, Honey Lake Valley 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
  POM68166  Downingia laeta Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1188737  Downingia laeta John H. Weiler, L. Constance, and E. Molseed 1960-6-13 60164 Lassen 1.7 mi s Ravendale (at w side of U.S. Hwy 395) 1615 Comment
  UCD149942  Downingia laeta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CHSC69125  Drosera anglica Vernon Oswald; Beth Corbin, Gary Schoolcraft 1997-8-5 8812 Lassen North slope of Robbers Creek at Robbers Spring, so ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  CAS-BOT-BC159343  Drymocallis lactea var. lactea John Thomas Howell; Gordon H. True 1973-8-1 50224 Lassen East slope of Diamond Range south of Susanville - Sierra Nevada 2133 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  JEPS123974  Elatine Lowell Ahart, John Dittes 2015-7-13 20295 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  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
  JEPS123971  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20301 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA252429  Elatine californica R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39136 Lassen Said Valley Reservoir. Comment
  UC1567360  Eleocharis bella G. Schoolcraft 1989-7-18 1982 Lassen S of Clarks Valley Road near Bucks Spring 1874 Comment
  RSA0009565  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CAS-BOT-BC113361  Eleocharis engelmannii James D. Jokerst 1983-7-23 1873 Lassen Grasshopper Valley Quad, near Madeline Plains. 1614 Comment
  UCD55301  Eleocharis macrostachya Ellen Dean; Gary Schoolcraft 2006-5-16 3130 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  POM11415  Eleocharis montevidensis var. montevidensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  JEPS64130  Eleocharis palustris Brown and Wieslander 1922-7-30 76 Lassen Martin Springs, Eagle Lake Comment
  UC1142940  Eleocharis palustris A. L. Hormay 1941-6-18 2 Lassen Little Harvey Valley 1676 Comment
  HSC95296  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC7692  Elymus Beverly J. Wise 1969-5-23 123 Lassen 35 miles SE of Susanville on Lassen County Road 320. 1249 Comment
  UC803919  Elymus G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4008 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  UC1031373  Elymus X saundersii Leo Whitney 1935-7-31 3588 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC506940  Elymus X saundersii George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassn <National> Forest 1737 Comment
  JEPS123868  Elymus cinereus Lowell Ahart, John Dittes 2015-7-14 20327 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  CAS-BOT-BC227490  Elymus elymoides Gary Schoolcraft 1983-6-29 1053 Lassen Ash Valley 1554 Comment
  CAS-BOT-BC227493  Elymus elymoides John Thomas Howell 1934-6-10 11866 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  UC1924248  Elymus elymoides Debra Valov 2004-6-9 2004264 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD61417  Elymus elymoides Beecher Crampton 1954-7-5 2065 Lassen Along Hwy. 36, 5.5 miles west of Susanville. 1447 Comment
  UCD61621  Elymus elymoides R. Tofsrud 1947-7-1 217 Lassen East of Madeline. Comment
  CHSC6320  Elymus elymoides subsp. elymoides Nick Santamaria 1968-6-29 16 Lassen On the ELBS grounds. Comment
  UC1136930  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC1537224  Elymus elymoides subsp. elymoides Gordon H. True Jr. 1937-7-10 786 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1524 Comment
  JEPS126496  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-12 CA 350 -74 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
  CHSC112796  Elymus glaucus Lowell Ahart; John Dittes 2013-7-23 18893 Lassen About 30 feet northeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC206732  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51977 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  HSC79799  Elymus multisetus William Rodstrom 1975-6-9 Lassen Johnstonville, 1/4 mile S of Hwy. 395, west of airport. Comment
  JEPS127709  Elymus spicatus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -163 Lassen Cold Springs Road North of Bryn Marr Ranch. Comment
  CDA31738  Elymus trachycaulus T. C. Fuller 1963-7-15 10888 Lassen 2.9 miles southeast of Pittville, south of road to Little Valley 0 Comment
  UCD32662  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD62709  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Along Hwy. 36, 4.5 miles west of Susanville. Comment
  UCD62706  Elymus trachycaulus subsp. trachycaulus L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  CHSC110307  Elymus triticoides L. P. Janeway; B. Castro 2012-7-2 10921 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  CAS-BOT-BC81878  Ephedra viridis M. Bourell 1997-5-31 5882 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  CHSC116918  Ephedra viridis J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  HSC1306  Ephedra viridis J. W. Bosworth 1965-5-1 31 Lassen 20 mi. N of Susanville on Hwy. 395 1220 Comment
  HSC26173  Ephedra viridis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19306 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UCD14623  Ephedra viridis Nathan Horn 1989-5-18 14 Lassen Great Basin, along Highway 70. 1487 Comment
  SEINET5335198  Ephedra viridis F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  SEINET12539614  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  RSA0011500  Epilobium brachycarpum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46975 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC27715  Epilobium campestre Robert A. Schlising 1978-7-6 3310 Lassen Dry Lake, SE of Eagle Lake. 1645 Comment
  UC1523739  Epilobium campestre Gary Schoolcraft 1981-9-1 571 Lassen se of Bieber (along road) 1255 Comment
  UC303060  Epilobium canum subsp. latifolium Pearl Safford 111 Lassen Susanville [uncertain locality] Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC95176  Epilobium ciliatum subsp. ciliatum Gordon Leppig, Kai Neander, Juli Neander 1997-7-26 690 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS119642  Epilobium ciliatum subsp. ciliatum Lowell Ahart, John Dittes 2012-7-9 18301 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1191714  Epilobium ciliatum subsp. ciliatum Verne Grant and Irving Schneider 1947-9-6 8388 Lassen irrigation ditch w Fleming Ranch headquarters (near Wendel) Comment
  HSC100124  Epilobium ciliatum subsp. ciliatum M. T. Milligan 1964-7-16 143 Lassen 2 mi. W on Silver Lake Rd., along Upper Susan River 1829 Comment
  HSC68920  Epilobium ciliatum subsp. glandulosum Gary Schoolcraft 1980-7-16 315 Lassen Near Nelson Corral Reservoir 1805 Comment
  RSA0105579  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 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
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  UC1609447  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  CHSC25085  Equisetum laevigatum K. R. Stern 1967-7-1 2465 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC99499  Equisetum laevigatum Lowell Ahart; John Dittes 2008-6-20 14933 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC204432  Eragrostis cilianensis John Thomas Howell 1973-7-10 49793 Lassen Susanville 1295 Comment
  SEINET4568218  Eragrostis cilianensis G. Schoolcraft 1998-8-4 2802 Lassen Along HWY 395 at Viewland Monument 1378 Comment
  CHSC4879  Eremogone congesta R. Carter 1967-6-23 544 Lassen Growing ca. 5 yds. off N side road. Comment
  JEPS124509 Image available Eremogone congesta L. Fleckenstein 1967-7-12 70 Lassen Collected 300 yds east of Hwy. 139, 15.2 Mi. S. E. of Adin, near Willow Creek Campground. 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
  CAS-BOT-BC174201  Eremogone congesta var. congesta Clarence R. Quick 1964-7-29 64 -88 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CHSC29857  Eremogone congesta var. simulans Robin Ondricek 1978-6-6 32 Lassen At Murrers Upper Meadow, .5 mi E of intersection with main rd. to ELFS and tunnel crossing. 1569 Comment
  CHSC68856  Eremogone congesta var. subcongesta Vernon Oswald; Lowell Ahart 1997-6-24 8632 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CAS-BOT-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  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
  CHSC5009  Eriastrum signatum L. G. Bennett 1967-7-4 110 Lassen Deans Meadow, near Eagle Lake. 1706 Comment
  JEPS14047  Eriastrum signatum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5417 Lassen along Smoke Creek rd 6.8 mi e Highway 395 (s edge of valley); Secret Valley Comment
  SEINET14592139  Eriastrum signatum R. R. Halse 2004-7-21 6669 Lassen At junction of US Hwy 395 and State Road A 26, ca 11 miles SE of Milford. 1274 Comment
  UC1178959  Eriastrum signatum Herbert L. Mason 1957-7-5 14714 Lassen s Madeline; Madeline Plains Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  SEINET11836160  Ericameria Unknown 1948-1 s.n. Lassen near Doyle on Rt. 395 1219 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
  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
  SEINET5741365 Image available Ericameria bloomeri Lowell E. Urbatsch, Vensa Karaman 2000-1 7714 Lassen Collected along Forest Road 37N11, off of CA 139. 1220 Comment
  UC1118874  Ericameria bloomeri A. Simontacchi 1940-7-7 929 Lassen 0.8 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1523743  Ericameria bloomeri Gary Schoolcraft 1981-8-25 565 Lassen w side of Eagle Lake (along main road) Comment
  CAS-BOT-BC298182  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  OBI5746  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-5 2401 Lassen 3/4 mi E of Termo 1646 Comment
  CAS-BOT-BC294180  Ericameria nauseosa var. speciosa G. Schoolcraft 1987-9-9 1775 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC294183  Ericameria nauseosa var. speciosa Clare B. Hardham 1969-8-28 17426 Lassen West of Janesville Comment
  UC217115  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11681 Lassen s side of Honey Lake Valley Comment
  UC761817  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  UC773958  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spring Experiment Range Lassen Forest 1755 Comment
  CAS-BOT-BC299485  Ericameria nauseosa var. washoensis Gary Schoolcraft 1979-8-23 181 Lassen Just off Post Camp Road along road to Big Spring 1676 Comment
  CAS-BOT-BC293010  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 1/2 mile from Janesville on the road to Wendel - Western edge of Honey Lake Valley 1280 Comment
  UC527350  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 Lassen 0.5 mi from Janesville (on the road to Wendel, w edge of Honey Lake Valley); Honey Lake Valley 1280 Comment
  CAS-BOT-BC293206  Ericameria suffruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50665 Lassen Summit ridge of Diamond Mt. 2346 Comment
  JEPS103188  Erigeron G. Schoolcraft 2000-6-12 2901 Lassen West of Cold Springs Reservoir 1676 Comment
  SEINET10721387  Erigeron Paul Gallian, David B. Dunn 1971-6-2 Gallian 462 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
  CAS-BOT-BC293524  Erigeron aphanactis var. aphanactis Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Ball's Canyon, south of Secret Valley Comment
  CAS-BOT-BC293527  Erigeron aphanactis var. aphanactis P. Monnet 1913-7-6 809 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  SEINET240401  Erigeron bloomeri S. L. Welsh, ND Atwood 2001-6-14 28153 Lassen E of Hwy 395, rd to Rams Horn Spring campground 1539 Comment
  CAS-BOT-BC294483  Erigeron bloomeri var. bloomeri L. P. Janeway 1990-7-4 3768 Lassen On knob ca 0.8 mi NE of Meadowview Peak 1981 Comment
  CHSC64753  Erigeron bloomeri var. bloomeri Vernon H. Oswald 1995-5-31 6806 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.9 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  JEPS117490  Erigeron bloomeri var. bloomeri Lowell Ahart, John Dittes 2010-7-31 17010 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
  RSA636042  Erigeron bloomeri var. bloomeri Michael A. Vincent 1999-6-9 8583 b Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CAS-BOT-BC296848  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-11 7979 Lassen Big Valley Mts. Comment
  CHSC65297  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1995-8-14 7193 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small stream, N of Susanville. 1676 Comment
  CHSC99112  Erigeron divergens Lowell Ahart; John Dittes 2008-6-20 14965 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
  CAS-BOT-BC296899  Erigeron eatonii var. eatonii A. M. Vollmer; L. Beane 1953-7-1 50 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 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
  CHSC65088  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1995-7-24 7129 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi ESE of Silver Lake on Forest Route 10 just S of its jct. with Forest Road 30N21. At roadside. 1935 Comment
  POM32997  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA702593  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1136837  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  JEPS2572  Erigeron elegantulus M. S. Baker and F. Nutting 1894-7-5 Lassen Dixey Valley; ; Dixey Valley, Lassen Co. Comment
  CHSC80592  Erigeron filifolius var. filifolius Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10035 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  CAS-BOT-BC295182  Erigeron inornatus John Thomas Howell 1974-7-10 50561 Lassen Elysian Valley 1325 Comment
  CHSC59077  Erigeron inornatus var. inornatus Vernon H. Oswald; Lowell Ahart 1992-8-25 5180 Lassen Lassen Volcanic National Park. Juniper Lake-Snag Lake Trail, ca. midway between Cameron Meadow and Snag Lake. 1935 Comment
  RSA712920  Erigeron inornatus var. inornatus L. P. Janeway 2005-8-27 8521 Lassen High Cascade Range. Along road 22, 2.1 road km west of its beginning/end at Road 35N05 in Little Valley 1415 Comment
  SFV10992  Erigeron lassenianus var. deficiens J. Turner, F. M. Ball 1962-7-13 1193 Lassen Laufman Public Camp, 3 miles off Highway 395 from Milford near Honey Lake. 1494 Comment
  CAS-BOT-BC295505  Erigeron linearis John Thomas Howell 1934-6-14 12137 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UC206218  Erigeron linearis Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC585085  Erigeron linearis E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1792 Lassen about 5 mi N of Terno 1371 Comment
  CHSC5209  Erigeron philadelphicus M. West 1946-7-10 Lassen Pine Creek, Eagle Lake. 1584 Comment
  HSC82189  Erigeron philadelphicus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6038 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CDA19737  Erigeron pumilus D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC86949  Erigeron pumilus var. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  CHSC93688  Erigeron pumilus var. intermedius Lowell Ahart; John Dittes 2005-6-1 11853 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1567402  Erigeron pumilus var. intermedius G. Schoolcraft 1989-6-19 1916 Lassen Ash Valley RNA/ACEC , Susanville 1554 Comment
  UC31450  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow Dixey Valley, Adobe meadow Comment
  CAS-BOT-BC300119  Erigeron pumilus var. intermedius Clare B. Hardham 1961-6-17 7504 Lassen Sierra Nevada Mountains. Baxter Creek 1676 Comment
  CAS-BOT-BC300310  Erigeron tener G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2285 Lassen Summit Thompson Peak, south of Janesville 2330 Comment
  SEINET5333913  Eriogonum baileyi D. Tonenna 2007-8-20 s.n. Lassen Hwy 395, 6 mi. north of Halellujah Junction, west of road 1450 Comment
  CAS-BOT-BC241564  Eriogonum baileyi var. baileyi Gary Schoolcraft 1985-7-29 1490 Lassen Western slopes of Ft. Sage Mtns. 1402 Comment
  CAS-BOT-BC241567  Eriogonum baileyi var. baileyi John Thomas Howell; G. H. True 1973-7-31 50144 Lassen Janesville 1295 Comment
  NY242982  Eriogonum baileyi var. divaricatum R. F. Hoover 1940-10-5 4673 Lassen Pass between Shaffer Mountain and Warren Peak. Comment
  CAS-BOT-BC244039  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen Between Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC241835  Eriogonum caespitosum Pauleen Broyles 1977-5-30 150 Lassen Ca. 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Creed [Creek] Road, ca 8 km ne of Herlong 1660 Comment
  SEINET11934606  Eriogonum caespitosum Unknown 1977-1 150 Lassen 1.6 km SE of South Fork Reservoir and 1.6 km N of Skedaddle Creek Rd. ca 8 km NE of Herlong 1660 Comment
  NY242503  Eriogonum collinum N. H. Holmgren 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale. Comment
  NY242505  Eriogonum collinum J. L. Reveal 1971-6-22 2463 Lassen Along U.S. Highway 395, 4.5 miles south of Ravendale. Comment
  NY242508  Eriogonum collinum H. D. D. Ripley 1943-6-15 5758 Lassen Near Viewland. 1310.6 Comment
  RSA176183  Eriogonum collinum Noel Holmgren, James L. Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale Comment
  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
  NY570382  Eriogonum douglasii S. L. Welsh 2001-6-14 28154 Lassen East of Highway 395, road to Rams Horn Spring campground 1539.2 Comment
  CAS-BOT-BC246502  Eriogonum douglasii var. meridionale Doris Kildale Gillespie 1930-5-13 9361 Lassen Between Susanville and Janesville Comment
  CHSC68899  Eriogonum douglasii var. meridionale Vernon Oswald; Lowell Ahart 1997-6-24 8639 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC1736000  Eriogonum douglasii var. meridionale Dean W. Taylor 1992-5-7 12544 Lassen Willow Creek drainage, ca. 0.4 road miles from Highway 139 on road to Smith Flat, 1524 Comment
  UCSC005349  Eriogonum elatum Randall Morgan 1998-7-20 3319 Lassen Hwy 144 west of Susanville Comment
  CHSC93241  Eriogonum elatum var. elatum John Dittes; Scott Chamberlain 2004-6-28 1020 B Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow edge. 1496 Comment
  RSA766386  Eriogonum eximium Susan Hutchinson 1929-12 857 Lassen Desert slope of Sierra Nevada, Lassen. 1220 Comment
  CAS-BOT-BC259388  Eriogonum luteolum Clare B. Hardham 1961-6-16 7490 Lassen Gold Run Creek. South of Susanville Comment
  CAS-BOT-BC263044  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  RSA176182  Eriogonum maculatum Noel Holmgren, James L. Reveal 1964-8-22 1724 Lassen 35 miles mortheast of Susanville, 18 miles south of Ravendale along U.S. 395 Comment
  UC1533147  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 0.1 mi w along Smoke Creek Road CA-NV stateline 1341 Comment
  UCR92118  Eriogonum maculatum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  NY430489  Eriogonum marifolium G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mountain 2316.5 Comment
  CAS-BOT-BC267343  Eriogonum marifolium var. marifolium A. M. Vollmer; L. Beane 1953-7-1 83 Lassen Along Halls Flat Road beginning 6 miles west of Susanville to McArthur 1554 Comment
  POM105455  Eriogonum microtheca var. ambiguum Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CHSC77222  Eriogonum microthecum var. ambiguum G. Schoolcraft 1999-7-28 2871 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  NY803607  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-22 2949 Lassen About 3 miles northwest of Constantia, CA 1 mile west on FS Road 24N22X 1417 Comment
  UCD149826  Eriogonum nidularium William Anderson 1963-6-22 s.n. Lassen Lassen County. Wendel Canyon. 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
  JEPS117368  Eriogonum nudum var. nudum Lowell Ahart, John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  OBI76957  Eriogonum nudum var. nudum Anthony Baniaga 2011-7-5 420 Lassen Lassen Natl Forest, e of Willard Crk. Fredonyer Pass quad. T29NR10E sec 25 NE of NW 1485 Comment
  RSA0039349  Eriogonum nummulare John F. Emmel 1993-7-29 1284 Lassen Southeast Honey Lake Valley; 4.1 air miles west and 1.3 air miles south of Calneva railroad stop, ca. 2 air miles north of peak of Turtle Mountain. 1255 Comment
  POM105328  Eriogonum ochrocephalum var. ochrocephalum Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  UC1483820  Eriogonum prociduum G. Schoolcraft 1980-7-14 308 Lassen w Madeline (Ash Valley); Ash Valley 1548 Comment
  UC1523800  Eriogonum prociduum Gary Schoolcraft 1982-6-29 745 Lassen Ash Valley 1554 Comment
  CHSC12948  Eriogonum prociduum var. prociduum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5813 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  CHSC87118  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7200 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
  SEINET530720  Eriogonum sphaerocephalum var. halimioides Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  CAS-BOT-BC262736  Eriogonum sphaerocephalum var. sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen In Balls Canyon on U. S. Highway #395 Comment
  NY283128  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Jonesville on Highway 395. Comment
  NY283383  Eriogonum strictum G. Schoolcraft 1985-6-12 1422 Lassen Near intersection of Horse Lake Road & Highway 139 1487.4 Comment
  CAS-BOT-BC262742  Eriogonum strictum var. anserinum H. D. Ripley; R. C. Barneby 1944-5-30 5965 Lassen Secret Valley 1554 Comment
  UC412821  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CAS-BOT-BC267896  Eriogonum umbellatum Alice Eastwood; John Thomas Howell 1940-6-11 7981 Lassen Big Valley Mts. Comment
  JEPS127724  Eriogonum umbellatum Alejandro Brambila, Michael Dolan 2016-8-2 CA 320 -181 Lassen Head north on unnamed road west of Holbrook Reservoir from Ash Valley Road. Comment
  RSA0025577  Eriogonum umbellatum John F. Emmel 1996-7-14 1427 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. Comment
  RSA0029339  Eriogonum umbellatum John F. Emmel 1991-7-22 1189 Lassen Long Valley: along Hwy 395, 3.8 road mi north of junction with Hwy 70. 1494 Comment
  JEPS85788  Eriogonum umbellatum var. modocense Roy E. Buck, Robert A. Price 1988-6-26 1029 Lassen subsidiary peak ca. 0.5 air km n main summit (ca. 30 air km nne of Susanville); Fredonyer Peak 2377 Comment
  RSA702592  Eriogonum umbellatum var. modocense L. P. Janeway 2004-6-26 8157 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  JEPS94109  Eriogonum umbellatum var. nevadense Vernon H. Oswald and Lowell Ahart 1998-5-22 9115 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1402 Comment
  OBI75886  Eriogonum umbellatum var. nevadense Anthony Baniaga 2011-7-1 413 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  CAS-BOT-BC265098  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-12 1 -83 Lassen On Sears Road near Janesville, Sierra Nevada Comment
  SEINET10479566  Eriogonum umbellatum var. nevadense Taylor 1982-8-27 Taylor 5056 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  RSA221784  Eriogonum umbellatum var. polyanthum Noel Holmgren, J. J. Fay, B. L. Bethers 1970-6-25 4375 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  CAS-BOT-BC262354  Eriogonum vimineum G. Schoolcraft 1993-6-29 2306 Lassen Ash Valley RNA/ACEC at south end of T in Rd. 1539 Comment
  CHSC4953  Eriogonum vimineum R. Carter 1967-6-27 561 Lassen Growing ca. 10 yds off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  HSC63561  Eriogonum vimineum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC262368  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  HSC81546  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 5997 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CHSC64754  Eriophyllum lanatum var. achilleoides Vernon H. Oswald 1995-5-31 6800 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  UC1136991  Eriophyllum lanatum var. achilleoides L. R. Short and J. Warren 1936-6-29 S 459 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1822 Comment
  UC1142994  Eriophyllum lanatum var. achilleoides August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest, Harvey Mtn. 2133 Comment
  CAS-BOT-BC308139  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-29 64 -85 Lassen Blacks Mt. Experivmental Forest 1798 Comment
  SEINET8687254 Image available Eriophyllum lanatum var. achilleoides J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  UCR18727  Eriophyllum lanatum var. grandiflorum Frank C. Vasek 1975-7-11 750711- 06 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  OBI76976  Eriophyllum lanatum var. integrifolium Anthony Baniaga 2011-6-20 386 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  UC1130283  Erodium cicutarium E. Sawyer 1935-6-27 241 Lassen 3.5 mi ne Beckwith Pass; Sierraville Quad. 1524 Comment
  UC1130323  Erodium cicutarium A. Simontacchi 1940-6-8 832 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 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
  UC1088542  Eryngium alismifolium Ornduff 1958-7-22 5014 Lassen 6.6 mi. n. Ravendale (along Hwy. 395) Comment
  SEINET8673757  Eryngium alismifolium G. L. Stebbins Jr., Dansereau, P.; McMillan, C.; Narayan, K. 1949-8-6 4000 Lassen Hog Flat, n.w. of Susanville. 1676 Comment
  CDA38324  Eryngium articulatum Wheeler 1953-9-22 s.n. Lassen [no additional info] 0 Comment
  UC1584017  Erysimum capitatum G. Schoolcraft 1990-5-15 2047 Lassen about 4 mi s Nubeiber; John's Valley area 1310 Comment
  CHSC60405  Erythranthe breweri Mary Ann Showers 1992-6-12 2527 Lassen Lassen Volcanic National Park. Butte Lake. 1859 Comment
  CHSC5906  Erythranthe guttata M. West 1946-6-20 Lassen Grasshopper Valley. Eagle Lake. 1615 Comment
  CHSC71395  Erythranthe inflatula Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9263 Lassen Pittville Rd. (Lassen 111, FS 36N01) on the southeast edge of Poison Lake 1.9 mi N of Hwy. 44. On the bank of a pond on the east side of the railroad, which parallels the lake shore at this point. 1709 Comment
  CHSC5010  Erythranthe primuloides L. G. Bennett 1967-7-7 112 Lassen Deans Meadow, near Eagle Lake. 1706 Comment
  CHSC5909  Erythranthe primuloides J. B. Kimsey 1946-6-20 Lassen Grasshopper Valley. 1615 Comment
  POM252826A  Erythranthe pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mile south of Westwood. 1524 Comment
  CHSC71102  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1998-5-22 9123 Lassen Road to Summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  UC725540  Eschscholzia californica A. A. Heller 1941-6-26 16228 Lassen a short distance w county line near Adin (Modoc County) (along U.S. Hwy 299) Comment
  CHSC117283  Eschscholzia californica subsp. californica Lowell Ahart; John Dittes 2016-7-15 21228 Lassen About 100 yards west of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1278 Comment
  JEPS117958  Eucephalus breweri Zoya Akulova-Barlow Sep 2006 Lassen Sierra Nevada, Dyer Mountain Comment
  UCR55538  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road (c. 2 mi south of U.S. Hwy 299 and 4 mi SW of Adin) 1280 Comment
  CHSC110771  Euphorbia crenulata Dean Wm. Taylor 2012-7-18 21273 Lassen Pumice flat nestled in the cones about 2 miles South of the south end Poison Lake (along Highway 44). 1783 Comment
  SEINET8506929  Euphorbia crenulata D. W. Taylor 2008-5-14 20198 Lassen Unnamed flat about 2 air miles SSE of Poison Butte 1768 Comment
  UCD142769  Euphorbia serpillifolia R. N. Raynor 1938-7-16 s.n. Lassen Honey Lake Valley. Comment
  JEPS94086  Euthamia occidentalis Vernon H. Oswald and Lowell Ahart 1998-9-8 9579 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on County Rd. 91 (Bieber-Lookout Rd.)); Ash Creek and Big Swamp 1258 Comment
  UC1192257  Euthamia occidentalis Malcolm A. Nobs, S. Galen Smith 1949-8-20 1488 Lassen 1 mi s of Doyle; Long Creek Comment
  CAS-BOT-BC458296  Euthamia occidentalis Louella Bass 1980-8-1 s.n. Lassen Sierra Nevada: Standish Comment
  RSA0027354  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak. 2378 Comment
  CAS-BOT-BC278432  Festuca idahoensis Clarence R. Quick 1961-6-21 61 -28 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CDA42998  Festuca idahoensis L. Ahart, John Dittes 2008-6-19 14880 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  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
  UC1026711  Festuca idahoensis Leo Whitney 1935-6-23 3295 Lassen Camp 10, Fruit Grower's Supply Company Comment
  UC1776694  Festuca idahoensis G. Schoolcraft 1994-7-7 2374 Lassen About 1.5 mile NW of Boot Lake 2407 Comment
  UC506991  Festuca idahoensis George A. Fischer and Irwin H. Johnson 1933-7-12 F 216 Lassen Lassen Forest 1722 Comment
  UCD66094  Festuca idahoensis C. R. Quick 1962-6-17 62- 30 Lassen Western Pacific RR, south of Halls Flat. 1706 Comment
  CAS-BOT-BC278937  Festuca rubra George W. Gillett 1957-7-28 923 Lassen Lassen Volcanic National Park. Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake 1859 Comment
  UCD66352  Festuca rubra L. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Comment
  RSA392153  Frasera albicaulis var. nitida Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1523731  Fraxinus latifolia Gary Schoolcraft 1981-7-14 508 Lassen s of Pittville; Beaver Creek Area 1158 Comment
  RSA59815  Fritillaria atropurpurea E. K. Balls 1950-5-19 14769 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  CHSC42207  Fritillaria pudica Kimber Hostetter 1986-3-26 1 Lassen Eagle Lake Field Station, Eagle Lake, ca. 17 km nw of Susanville. Ca. 0.5 km n of korm of CSUC field station. 1700 Comment
  CHSC7720  Galium asperrimum Beverley J. Wise 1969-5-18 96 Lassen 18.2 mi. East of Susanville on Co. Rd 216 off Lassen Co. Rd. 215. 1554 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
  CHSC66866  Galium trifidum var. pusillum Vernon H. Oswald; Lowell Ahart 1996-9-10 8275 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  JEPS29538  Galium trifidum var. pusillum John Thomas Howell 1959-9-23 34886 Lassen n end of lake Lassen Volcanic National Park, Juniper Lake 2057 Comment
  CHSC23503  Gayophytum Wayne O. Baum 1971-7-12 71 -75 Lassen S. slope of Gallatin Peak. 2042 Comment
  JEPS128407  Gayophytum diffusum Catherine Bauer with Ellen Bauer Benson 2017-8-16 15 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. 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
  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
  CHSC25090  Gayophytum heterozygum K. R. Stern 1967-7-1 2442 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  RSA768780  Gayophytum heterozygum L. Ahart, John Dittes 2010-7-31 17025 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  HSC63969  Gayophytum humile Teresa Prendusi 1980-7-1 1121 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  UC1122615  Gayophytum humile A. Simontacchi 1940-6-6 821 A Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC27711  Gayophytum racemosum George Deriso 1978-7-21 90 Lassen S of Eagle Lake, at E end of Mahogany Lake; near lake shore. 2060 Comment
  CHSC66725  Gentiana calycosa Vernon H. Oswald; Lowell Ahart 1996-8-1 8119 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood 1737 Comment
  UC878530  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen about a mi e Westwood 1524 Comment
  HSC8435  Gentiana newberryi Fred J. Kindel 1955-8-1 Lassen Mt. Meadows Reservoir Comment
  CHSC58499  Gentianopsis simplex Vernon H. Oswald 1992-7-3 5052 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. Along drainage on the upper strand of the lake. 1851 Comment
  SJSU10496  Geum macrophyllum H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CAS-BOT-BC143568  Geum triflorum John Thomas Howell 1934-7-6 12441 Lassen Harvey Valley 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
  UC1136907  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  UCD117610  Gilia brecciarum Grady L. Webster 1989-5-13 7707 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  CHSC64798  Gilia inconspicua Vernon H. Oswald 1995-5-24 6768 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. Flat bordering the road. 1219 Comment
  SEINET11268345  Gilia inconspicua Vernon H. Oswald, Lowell Ahart 1998-5-22 9107 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle.; 0 1372 Comment
  NY964494  Gilia inconspicua var. sinuata W. W. Eggleston 1911-5-20 6743 Lassen Vicinity of Doyle Station 1290 Comment
  RSA516988  Gilia ophthalmoides Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  CHSC25915  Gilia sinuata K. R. Stern 1967-7-1 2437 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  JEPS69702  Gilia sinuata J. W. Blankinship 1911-11-29 Lassen Red Rock Comment
  POM74852  Gilia sinuata Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA126642  Glyceria borealis H. S. Yates 1936-8-12 6083 Lassen McKenzie Meadow. 1524 Comment
  CAS-BOT-BC280597  Glyceria elata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49473 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC106065  Gnaphalium palustre Lowell Ahart; John Dittes 2010-7-31 16995 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC93664  Gnaphalium palustre Lowell Ahart; John Dittes 2005-6-2 11968 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CAS-BOT-BC110213  Grayia spinosa Peter H. Raven; Otto T. Solbrig 1958-6-17 13274 Lassen Along United States Highway 395, 19.0 miles south of Ravendale. Comment
  CHSC36443  Grayia spinosa Theresa Costa 1982-6-2 24 Lassen Along Ravendale Rd ca. 10 yd e of Horse Lake. Comment
  OBI77052  Grayia spinosa Anthony Baniaga 2011-7-1 411 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  UC1537382  Grayia spinosa Gordon H. True Jr. 1936-6-26 551 Lassen flats s.e. Standish; Honey Lake Valley 1219 Comment
  SEINET12330175  Gymnosteris parvula M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -2 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale, 0.1 mi W Calif-Nev line Comment
  UCD98139  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  UC1483791  Hackelia cusickii Teresa Prendusi 1980-7-9 Lassen 36 m n of Susanville (on Hwy 139 and 4 m w); Grasshopper Ridge 1737 Comment
  UC24814  Hackelia cusickii M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mountains Comment
  NY537530  Halogeton glomeratus T. H. Kearney 1951-8-20 28229 Lassen Honey Lake Valley near Herlong 1280.2 Comment
  SBBG8396  Helianthella californica H. and M. Dearing 1938-7-1 2246 Lassen near Westwood Comment
  UC1553381  Helianthella californica subsp. nevadensis G. Schoolcraft 1988-7-11 1822 Lassen about 1 mi s Hwy. 44 (on road to Goumaz) 1645 Comment
  CAS-BOT-BC314767  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  CHSC43613  Helianthus annuus Vernon Oswald 1986-8-7 2274 Lassen Hwy 36, 15.7 mi e of the Lassen-Plumas County line, 1.7 mi sw of the Susan River. Roadside. 1447 Comment
  CHSC91775  Helianthus bolanderi G. Douglas Barbe 1978-8-31 2424 Lassen Modoc National Forest. Roadside, Hwy 139, NW of Willow Creek Guard Station, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). 1417 Comment
  JEPS25527  Helianthus cusickii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7141 Lassen beside Hwy 395 one-fourth mi s of junction road to Smoke Creek 1341 Comment
  UC1776662  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  UC1776663  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  CHSC30620  Hesperochiron californicus Eric Miller 1975-7-9 14 Lassen E. of Dirt road adjacent to Coleman Lake, 30 ft. S. of overflow. 1950 Comment
  CHSC7686  Hesperochiron californicus Beverley J. Wise 1969-4-20 45 Lassen 14.6 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1463 Comment
  JEPS1678  Hesperochiron californicus G. S. Crew and C. S. Robinson 1927-1 10 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  UC1037238  Hesperochiron californicus Leo Whitney 1935-6-20 3253 Lassen Lassen Nat'l Forest, Fruit Grower's Supply Company, Camp 10 Comment
  UCD55304  Hesperochiron californicus Ellen Dean; Gary Schoolcraft 2006-5-16 3133 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
  CHSC106086  Hesperolinon micranthum Lowell Ahart; John Dittes 2010-7-31 16975 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
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  CHSC65038  Hesperolinon micranthum Vernon H. Oswald; Lowell Ahart 1995-7-5 6957 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  POM87380  Hesperolinon micranthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1523712  Hesperolinon micranthum Gary Schoolcraft 1981-6-25 478 Lassen East Fork of Wellard Creek 1584 Comment
  UC1601274  Hesperolinon micranthum Leo Whitney 1934-9-5 1889 Lassen between Susanville and Westwood; Lassen National Forest, Fredonyer Pass 1706 Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UCD85293  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an artemisia flat, along US Hwy. 395, 1 mile east of Johnstonville. Comment
  POM68265  Heterocodon rariflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  JEPS103227  Heterocodon rariflorum G. Schoolcraft 1997-7-14 2609 Lassen Decomposed granite S of Milford 1402 Comment
  UCR244106  Heterotheca villosa Jim Andre, G. L. Clifton 1993-6-9 19697 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC312311  Hieracium Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC312415  Hieracium albiflorum Alice Eastwood 1912-8-22 1781 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  CDA7975  Hieracium scouleri T. C. Fuller 1963-7-15 12904 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  JEPS97327  Hieracium scouleri Vernon H. Oswald 1995-8-21 7206 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  RSA32855  Hieracium scouleri A. A. Heller 1938-7-28 15301 Lassen About 2 miles east of Westwood. 1524 Comment
  UCD107499  Hieracium scouleri Tim Kuhn 2006-7-19 45 Lassen Eagle Lake Ranger District. Comment
  CHSC7206  Hippuris vulgaris Bruce K. Briggs 1969-9-10 232 Lassen Pond at Deans Meadow on N. end of meadow. Comment
  HSC63966  Holodiscus microphyllus var. glabrescens Teresa Prendusi 1980-7-10 Lassen N face of Little Fredonyer Peak, above Horse Lake 1768 Comment
  POM91032  Holodiscus microphyllus var. glabrescens Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  JEPS87501  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  UCD85482  Hordeum brachyantherum L. Whitney 1935-3-28 Lassen Fruit Growers Supply Co. Camp #10. Comment
  CAS-BOT-BC284712  Hordeum jubatum A. A. Beetle 1941-6-28 2808 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak Comment
  UCD85684  Hordeum jubatum subsp. intermedium A. A. Beetle 1941-6-28 2808 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CAS-BOT-BC289574  Hordeum marinum subsp. gussoneanum John Thomas Howell 1973-7-10 49804 Lassen Near Susanville on road to Jonesville, Sierra Nevada 1295 Comment
  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
  JEPS44575  Horkelia fusca subsp. tenella C. S. Robinson 1930-7-20 37 Lassen near Westwood Jct.; Norval Flat, Lassen Forest 1747 Comment
  UC1609471  Horkelia fusca subsp. tenella Vernon H. Oswald and Lowell Ahart 1993-6-28 5577 Lassen 0.2 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley, e of Poison Lake); e of Poison Lake, e side of Grays Valley 1749 Comment
  UC545661  Horkelia fusca subsp. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  CAS-BOT-BC143983  Horkelia fusca var. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  SEINET5342517  Hornungia procumbens N. H. Holmgren, P. K. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CAS-BOT-BC213004  Hosackia crassifolia John Thomas Howell; Gordon H. True 1973-7-31 50036 Lassen In areas of granitic rock on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  CHSC25089  Hydrophyllum capitatum var. alpinum K. R. Stern 1967-6-25 2428 Lassen Road to Eagle Lake Biological Station, Dean's Meadow near Gallatin Peak, ca. 3 mi. S of Eagle Lake. 1676 Comment
  POM73939  Hydrophyllum occidentale Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  RSA294534  Hymenolobus procumbens A. Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  UC420712  Hypericum formosum var. scouleri Franklin P. Nutting 1894-7-25 Lassen Willow Creek northern CA Comment
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Jul 3 2013
  RSA746512  Hypericum perforatum K. M. Meyer, A. Townesmith 2007-7-19 140 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  SEINET10720226  Hypericum perforatum Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 140 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC401309  Hypericum scouleri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49436 Lassen Elysian Valley, west of Janesville 1325 Comment
  NY52523  Iliamna bakeri G. Schoolcraft 1983-8-3 1129 Lassen 5 miles w of Madeline 1767.8 Comment
  JEPS808  Ipomopsis aggregata Brown and Wieslander 1922-6-19 1 Lassen Martin Springs Eagle Lake Comment
  CHSC23502  Ipomopsis aggregata subsp. formosissima Wayne O. Baum 1970-6-30 70 -1 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC68895  Ipomopsis congesta subsp. montana Vernon Oswald; Lowell Ahart 1997-6-24 8637 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
  CHSC111244  Iris missouriensis B. Castro; L. P. Janeway 2012-7-2 1936 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Moun-tains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1604 Comment
  SD7212  Iris missouriensis R. M. Austin 1879-1 Lassen Eagle Lake. Comment
  UCD138823  Iris tenuissima Michael A. Vincent 1999-6-9 8586 Lassen Along US Rt. 44, ca. 1 mile west of Viola, 13 miles east of Shingletown. 1524 Comment
  CDA34397  Isatis tinctoria E. Finley 1986-6-18 Lassen Near Nubieber, U.S. 299. 0 Comment
  CHSC60804  Isoetes howellii Vernon H. Oswald 1993-6-28 5622 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  UC1537066  Iva axillaris subsp. robustior Gordon H. True Jr. 1936-6-21 517 Lassen se of Litchfield; Honey Lake Valley 1219 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
  HSC77272  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin, 16.25 mi. W of Madeline Comment
  SEINET4855367  Ivesia paniculata Unknown 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 mi E of Adin. 1555 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
  CHSC5267  Juncus balticus 1944-6-26 Lassen Eagle Lake. 1584 Comment
  GMDRC7742  Juncus balticus subsp. ater J. M. Andre, G. Clifton 1993-6-11 33423 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  JEPS121288  Juncus balticus subsp. ater Lowell Ahart, John Dittes 2013-7-23 18903 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD55162  Juncus balticus subsp. ater Ellen Dean 2006-5-15 3050 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  JEPS114384  Juncus bufonius var. congestus Lowell Ahart, John Dittes 2008-6-20 14958 Lassen In meadow, around a new pond, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC91304  Juncus bufonius var. occidentalis Lowell Ahart; John Dittes 2005-6-2 11958 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  JEPS28715  Juncus bufonius var. occidentalis George W. Gillett 1957-7-29 953 Lassen near Snag Lake east inlet; Lassen Volcanic National Park, Snag Lake 1850 Comment
  CHSC60788  Juncus hemiendytus var. hemiendytus Vernon H. Oswald; Lowell Ahart 1993-6-3 5483 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.4 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  CHSC68886  Juncus hemiendytus var. hemiendytus Vernon Oswald; Lowell Ahart 1997-6-24 8653 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. Meadow. 2249 Comment
  RSA325011  Juncus luciensis A. Tiehm, Jan Nachlinger 1984-6-25 8824 Lassen Rodeo Flat, 2.7 miles west of the state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  CDA33210  Juncus macrandrus T. C. Fuller 1959-7-6 5018 Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  UC1136936  Juncus mexicanus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 238 Lassen Patterson Flat Lassen National Forest 1737 Comment
  UC2488  Juncus mexicanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3284 Lassen Tule Confederacy Honey Lake Valley Comment
  CHSC96731  Juncus nevadensis Gordon Leppig 1998-7-12 946 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow a complex. 1970 Comment
  UC1601786  Juncus nevadensis Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
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Jul 3 2013
  UCD108039  Juncus occidentalis Tim Kuhn 2006-7-26 76 Lassen Eagle Lake Ranger District. Comment
  RSA699964  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  CHSC3494  Juniperus californica Roger Jaegel 1966-5-14 152 Lassen Located twenty-two miles north of Susanville, along the bank of Eagle Lake at C. S. C. Biological Station. Comment
  SD139428  Juniperus grandis F. C. Vasek 1962-9-3 day 2 Lassen State highway 36, 3.6 miles west of Ranger Station, west of Susanville 1525 Comment
  CHSC13790  Juniperus occidentalis Anne Linda Brisk 1969-6-19 6 Lassen 1/4 mi NE of ELBS. 1554 Comment
  HSC1271  Juniperus occidentalis R. H. Berg 1963-4-6 37 Lassen 10 mi. N of Susanville Comment
  UC333780  Juniperus occidentalis unknown 1893-5-28 Lassen Susanville Comment
  UCR148432  Juniperus occidentalis David A. Charlet 1994-7-6 1923 Lassen Great Basin, Susanville, corner of Main and Fair Streets 1271 Comment
  RSA719706  Juniperus occidentalis var. occidentalis Michael A. Vincent, K. Levings 2006-7-29 12922 Lassen Along Rt. 395 pull-off, 3.1 miles north of Rt. 70, 7.7 miles north of Sierra County line Comment
  UC1924194  Juniperus occidentalis var. occidentalis Debra Valov 2005-8-20 2005236 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  UCR3786  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 04 Lassen 5.2-5.4 mi north of the junction of US Hwy 395 w/ Calif. Hwy 70 (alt. US Hwy 40) 1479 Comment
  SEINET11064452  Juniperus osteosperma D. Charlet 1993-7-13 1581 Lassen Fort Sage Mountains at OHV trailhead. 1490 Comment
  CHSC23744  Kelloggia galioides M. S. Taylor 1974-7-10 273 Lassen Scattered on W side of Gallatin Beach Rd, ca. 3 mi S of Gallatin Beach on Eagle Lake, ca 12 mi NW of Susanville. 1524 Comment
  CHSC60409  Kelloggia galioides Mary Ann Showers 1992-6-13 2541 Lassen Lassen Volcanic National Park. Along trail from Snag Lake jct to Widow Lake. 1828 Comment
  CHSC6262  Kelloggia galioides W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 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
  POM68597  Kelloggia galioides Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC1137699  Kelloggia galioides A. Simontacchi 1940-6-14 860 Lassen 7.5 mi wsw Schoonamaker Lake; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UCD18974  Kelloggia galioides Raymond D. Ratliff 1965-7-29 34 Lassen Lassen National Forest, Lower Pine Creek Allotment (LPC 13-2). 1719 Comment
  CDA42199  Kelloggia galioides T. C. Fuller 1963-7-15 10906 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CAS-BOT-BC180806  Kochia scoparia John Thomas Howell 1974-7-8 50509 Lassen Susanville - Sierra Nevada 1295 Comment
  CHSC65307  Kochia scoparia Vernon Oswald; Lowelll Ahart 1995-8-14 7172 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  RSA702594  Koeleria macrantha L. P. Janeway 2004-6-26 8149 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  CAS-BOT-BC271331  Koeleria pyramidata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  OBI75889  Kyhosia bolanderi Anthony Baniaga 2011-8-16 499 Lassen Lassen Natl Forest. Along F.S. 10, ca. 1 mi NE of Cummings Spring. Red Cinder quad. T30N R8E sec 7SE of SW 1920 Comment
  CHSC5067  Lactuca serriola L. Stites 1967-7-4 122 Lassen Collects at Eagle Lake Biology Station. 1371 Comment
  CAS-BOT-BC340511  Lactuca serriola Margaret Williams; Steven Williams 1974-7-26 74 -L-6 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC1924230  Lagophylla ramosissima Debra Valov 2005-8-20 2005216 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  RSA0009792  Lagophylla ramosissima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  JEPS94782  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald and Lowell Ahart 1998-9-8 9575 Lassen Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber; , Highway 299 1255 Comment
  JEPS125806  Lappula redowskii var. cupulata William Harnach 2010-6-1 1240 Lassen Approximately 10 miles NE of Doyle on Fort Sage Road then 1 mile N on Cal -Neva Road. Honey Lake Valley. Comment
  CHSC99283  Lasthenia glaberrima Lowell Ahart; John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, along a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS89760  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout 0.5 mi s of the Modoc County Line (Big Valley, Pit River Watershed); Big Valley, Pit River Watershed 1249 Comment
  UC725975  Lathyrus brownii A. A. Heller 1938-6-4 15148 Lassen 1 mi e Fredonyer Pass 1706 Comment
  POM253248  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15147 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CAS-BOT-BC321493  Layia glandulosa Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  CDA20367  Layia glandulosa D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC67171  Layia glandulosa James D. Jokerst 1991-5-29 3311 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  CHSC7632  Layia glandulosa Beverley J. Wise 1969-5-3 25 Lassen 4.3 mi. east on Las. Co. Rd. 338 beyond junction with Hwy 395. 1554 Comment
  OBI76935  Layia glandulosa Anthony Baniaga 2011-6-11 332 Lassen Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21 1623 Comment
  UC74071  Layia glandulosa J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat. Long Valley 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
  RSA337273  Layia glandulosa subsp. glandulosa Noel Holmgren, Patricia K. Holmgren 1980-7-4 9506 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 1890 Comment
  POM30358  Layia glandulosa subsp. glandulosa Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  SEINET11586251  Lemna trisulca B. L. Wilson, R. Brainerd, D. Lytjen, B. Newhouse, N. Otting 2004-8-24 11166 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, W of an old railroad right of way 1463 Comment
  JEPS406  Lemna trisulca W. L. Jepson 1918-8-16 8001 Lassen Merrillville 1524 Comment
  UC1101282  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-8-20 1483 Lassen 1 mi n of Doyle (Honey Lake Valley, Long Creek); Honey Lake Valley, Long Creek Comment
  RSA318598B  Lemna turionifera Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 Comment
  CHSC112402  Lepidium appelianum Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18785 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC99531  Lepidium chalepense Lowell Ahart; John Dittes 2008-6-20 14978 -B Lassen Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114944  Lepidium chalepense Lowell Ahart, John Dittes 2008-6-20 14978 -B Lassen Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  POM94542  Lepidium dictyotum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  UC10677  Lepidium dictyotum var. acutidens M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  CAS-BOT-BC89168  Lepidium draba Louella Bass 1977-6-12 77 -4 Lassen Elysian Valley. Comment
  UCR67374  Lepidium latifolium George K. Helmkamp 1990-9-23 A- 4 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC89721  Lepidium latifolium G. Schoolcraft 1987-9-24 1780 Lassen Along Riverside Drive in Susanville. 1310 Comment
  CHSC36444  Lepidium perfoliatum Jeffrey R. Peek 1982-6-1 22 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd. Ca. 10 yd e of Ravendale Rd. Comment
  CHSC4915  Lepidium perfoliatum A. E. Anderson 1967-7-1 69 Lassen North side of road 0.5 mi. e of Murrer Ranch buildings. 1371 Comment
  JEPS126526  Lepidium perfoliatum Lowell Ahart, John Dittes 2016-6-7 21017 Lassen On the east edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UCD115849  Lepidium perfoliatum R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. 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
  SEINET10448290  Lepidium perfoliatum Mary Susan Taylor 1974-7-8 Taylor 259 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  UC1137720  Leptodactylon pungens George A. Fischer, Irwin H. Johnson 1933-7-12 F 202 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 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
  CHSC13629  Leptosiphon harknessii M. S. Taylor 1974-6-25 290 Lassen Vernal pool ca. 4 ft s of road, ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville. 1524 Comment
  UC1553404  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  UC773857  Leucocrinum montanum L. R. Short 1936-5-1 S- 342 Lassen Burgess Spring Experiment Range; Lassen Forest 1699 Comment
  CAS-BOT-BC508366  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mile north Madeline, 8.8 mile south Modoc Co. line 1676 Comment
  CHSC60763  Lewisia triphylla Vernon H. Oswald; Lowell Ahart 1993-6-3 5473 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. On the margins of a meadow. 1731 Comment
  JEPS128173  Leymus cinereus M. C. Mahoney, J. A. Nash 2017-8-22 CA 350 -88 Lassen South of Pilgrim Lake of Buckhorn Byway. From Susanville take Highway 395 north to Buckhorn Byway and follow the road east past Buckhorn Reservoir and Dry Lake. Then take a right onto an unnamed road that is right on the CA/NV border. Continue for 1/2 mile. Population is on either side of the road. Comment
  JEPS68547  Leymus cinereus W. L. Jepson 1918-8-2 7795 a Lassen Raker Ranch Honey Lake Valley 1219 Comment
  UC188958  Leymus cinereus Milo S. Baker Lassen Dixie Valley Comment
  UC1924193  Leymus cinereus Debra Valov 2005-8-20 2005237 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1279 Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  UCD64268  Leymus cinereus L. D. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Camp #10. Comment
  UCD65616  Leymus triticoides L. Whitney 1933-8-1 s.n. Lassen Lassen National Forest. Near Sheepshead. 1889 Comment
  HSC21517  Ligusticum grayi M. T. Milligan 1964-7-16 141 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  CHSC13735  Lilium washingtonianum subsp. washingtonianum S. Villard 1973-7-3 58 Lassen On west side of county road going from Susanville to Plumas National Forest, 2 miles after pavement ends. Comment
  CHSC59098  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1992-8-25 5188 Lassen Grassy Creek at the E end of Snag Lake. Lassen Volcanic National Park. 1850 Comment
  JEPS22194  Limosella acaulis Rimo Bacigalupi with S. Galen Smith 1957-7-28 5997 Lassen along U.S. Highway 395 on Madeline Plains 3.1 mi s Madeline; Madeline Plains 1615 Comment
  HSC20654  Limosella acaulis D. E. Anderson 1962-8-6 2332 Lassen Lake at foot of Tule Mtn. Comment
  CHSC66265  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  JEPS58271  Linanthus bolanderi J. G. Lemmon May 1878 Lassen Susanville Comment
  UC726829  Linanthus harknessii A. A. Heller 1938-7-28 15299 Lassen about 2 mi e Westwood 1524 Comment
  UC867779  Linum lewisii Alice Eastwood Aug 22 1912-Aug 26 1912 1853 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC36496  Linum lewisii var. lewisii Theresa Costa 1982-6-3 30 Lassen Ca. .8 mi s jct forest service rds 5.I6 and 5.I7, ca. 5 yd w 5.I6, heading towards 50corners. Comment
  CHSC99539  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2008-6-20 14917 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC428422  Lithophragma tenellum John Thomas Howell 1934-6-14 12129 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  JEPS47671  Lithophragma tenellum Milo S. Baker 1890-1 Lassen Milford Comment
  CAS-BOT-BC269059  Lolium perenne John Thomas Howell; Gordon H. True 1973-8-1 50187 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC42594  Lomatium bicolor var. leptocarpum Vernon Oswald 1986-5-28 2065 Lassen Hwy 139 between Eagle Lake and Adin, 49.0 mi n of Susanville. 1630 Comment
  CHSC71064  Lomatium macrocarpum Vernon H. Oswald; Lowell Ahart 1998-5-22 9110 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  HSC81652  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6028 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  JEPS17107  Lomatium macrocarpum T. Brandegee 1892-6-23 Lassen Honey Lake Comment
  RSA724325  Lomatium macrocarpum Richard Halse 1977-5-22 1549 Lassen Along Highway 395, 9.5 miles north of Madeline 1490 Comment
  CHSC66230  Lomatium nevadense var. nevadense Vernon H. Oswald; Lowell Ahart 1996-6-24 7862 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  JEPS96076  Lomatium nevadense var. nevadense Vernon H. Oswald and Lowell Ahart 1996-6-24 7862 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows, ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of the meadow ca. 0.4 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC108004  Lomatium nudicaule Lowell Ahart; John Dittes 2011-6-20 17497 Lassen About 40 yards east 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
  CHSC118822  Lomatium nudicaule L. P. Janeway; B. Castro 2017-7-2 12338 Lassen Northern High Sierra Nevada. Along the crest of the Diamon Mtns 4.0 aiar-km west of Diamond Mtn; at the junstion of Skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  CHSC42627  Lomatium nudicaule Vernon Oswald 1986-5-28 2047 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC60710  Lomatium piperi Vernon H. Oswald; Lowell Ahart 1993-6-3 5471 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  CAS-BOT-BC217793  Lomatium ravenii Rhonda Riggins 1989-4-27 1641 Lassen US 395, 14 mi. N. Litchfield, 21 mi. S. Ravendale 1310 Comment
  CHSC68607  Lomatium ravenii Vernon H. Oswald; Lowell Ahart 1997-5-7 8404 Lassen Smoke Creek Ranch Rd. 2.9 mi east of Hwy. 395. 1359 Comment
  JEPS25531 Image available Lomatium ravenii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7145 Lassen 2 mi. s. Ravendale 1615 Comment
  UC1199508 Image available Lomatium ravenii Lincoln Constance and Rimo Bacigalupi 1959-6-14 3672 Lassen 1 mi s Ravendale; ; Ravendale, Lassen Co. 1463 Comment
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Jun 6 2012
  RSA125336  Lomatium tracyi P. H. Raven, Otto T. Solbrig 1958-6-16 13248 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  OBI81391  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2049 Lassen Ravendale, Horse Lake road. 1/8 mile west of Jct. with 395 about 1.5 miles south of Ravendale, in sagebrush. Yellow blossom. 1463 Comment
  UC1483809  Lomatium vaginatum G. Schoolcraft 1980-4-30 213 Lassen N of Shaffer Mountain 1365 Comment
  CHSC58491  Lonicera conjugialis Vernon H. Oswald 1992-7-3 5057 Lassen Lassen Volcanic National Park. Grassy Creek between Horseshoe and Snag lakes, ca. 0.3 mi NE of the trail to Cameron Meadow. 1950 Comment
  UC1249270  Lotus corniculatus Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8474 Lassen 1 mi se Milford (near Honey Lake, 26 mi se of Susanville) 1310 Comment
  CHSC24959  Lotus purshianus K. R. Stern 1974-6-26 5858 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, ca. 1.8 mi nw of intersection with Hwy. 44. Comment
  UC773895  Lotus purshianus var. purshianus L. R. Short and J. Warren 1936-6-23 S- 447 Lassen Burgess Spring Experiment Range Lassen Forest 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
  POM253309  Lotus unifoliolatus A. A. Heller 1938-7-28 15300 Lassen Just east of Westwood. Comment
  RSA0027355  Lupinus John F. Emmel 1994-7-17 1330 Lassen Summit area of Observation Peak. 2378 Comment
  RSA719890  Lupinus albifrons var. albifrons Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12914 Lassen Along Rt. 395, ca. 6 miles southeast of Johnstonville. Comment
  JEPS97402  Lupinus angustiflorus Vernon H. Oswald and L. Ahart 1994-7-24 7131 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
  NY732867  Lupinus arbustus subsp. calcaratus K. Morris 1973-5-25 211 Lassen Collected 9.6 miles north of Milford on US 395 Comment
  SEINET10484731  Lupinus arbustus subsp. silvicola Paul Gallian, David B. Dunn 1971-6-2 Gallian 498 Lassen Ca 22 miles s of adin on cal hwy 139; in basalt; assoc.; Juniper, artemisia 1646 Comment
  CAS-BOT-BC208765  Lupinus argenteus var. heteranthus Margaret Williams; Steven Williams 1974-7-26 74 -L-13 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 - Sierra Nevada 1493 Comment
  CHSC60740  Lupinus argenteus var. heteranthus Vernon H. Oswald; Lowell Ahart 1993-6-14 5514 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  JEPS114624  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2008-6-19 14873 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  NY736924  Lupinus argenteus var. heteranthus T. W. Nelson 1980-7-6 6015 Lassen Along Adin-Madeline road ca. 0.5 mile west of Moll Reservoir 1585 Comment
  SEINET11261487  Lupinus argenteus var. heteranthus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3926 Lassen 5.5 rd miles west of jct with Hwy 395 on Dawn Dr then rd to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1899 Comment
  UC1537121  Lupinus argenteus var. heteranthus Gordon H. True Jr. 1936-6-27 556 Lassen near top Hot Spring Mountain; near top of Hot Spring Mountain 1828 Comment
  UC1924256  Lupinus argenteus var. heteranthus Debra Valov 2004-5-31 2004231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC1924594  Lupinus argenteus var. heteranthus Debra Valov 2006-5-28 2006004 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1284 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
  SEINET5327880  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6019 Lassen 3 mi W of Doyle Comment
  SEINET5327895  Lupinus argenteus var. heteranthus N. H. Holmgren, P. K. Holmgren 1978-6-11 8925 Lassen Painters Flat road, 31.2 km (19.4 mi) E of Ravendate and 25 km (15.5 mi) airline distance 1800 Comment
  JEPS91018  Lupinus argenteus var. meionanthus Dean W. Taylor 1974-6-14 3722 Lassen at summit ca. 4 mi ssw Janesville (Janesville Grade Rd.); Plumas National Forest Comment
  UC1184055  Lupinus breweri Jean Langenheim 1957-6-26 4401 Lassen nw Said Valley (northeastern part of Lassen County); nw Said Valley 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
  SEINET10490671  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 458 Lassen 6 mi. N of hallelujah jact on us hwy 395, in aremisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET10940170  Lupinus confertus Thomas W. Nelson, Jane P. Nelson 1981-7-17 Nelson 6735 Lassen Along State Route 395, 22 mi S of Susanville, California, at milepost marker 46.80. Sagebrush scrub. Comment
  UCR18740  Lupinus corymbosus Frank C. Vasek 1975-7-11 75011- 21 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  JEPS95873  Lupinus grayi Vernon H. Oswald and L. Ahart 1999-6-9 9759 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass: T29N R10E NW1/4 Sect. 22, 5400 ft elevation, mixed coniferous forest 1645 Comment
  JEPS88246  Lupinus lepidus var. confertus Vernon H. Oswald and Lowell Ahart 1996-6-17 7807 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, on edge of Susan River E of Devils Corral Trailhead and w of 6.0 mi post); Modoc Plateau, Susan River 1402 Comment
  CHSC99135  Lupinus lepidus var. lobbii Lowell Ahart; John Dittes 2008-6-19 14886 -A Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC507001  Lupinus lepidus var. lobbii George A. Fischer and Irwin H. Johnson 1933-7-12 F 203 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  JEPS114625  Lupinus lepidus var. sellulus Lowell Ahart, John Dittes 2008-6-19 14886 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CHSC5287  Lupinus leucophyllus 1944-7-2 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  UC506994  Lupinus leucophyllus George A. Fischer and Irwin H. Johnson 1933-7-12 204 Lassen Grass Valley. Comment
  SEINET10488726  Lupinus leucophyllus Charles Piper Smith 1947-6-13 Smith 47448 Lassen Highway 299, adin, 1.3 mi west Comment
  SEINET11268214  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.; 0 1725 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
  CAS-BOT-BC202121  Lupinus nevadensis B. J. Cox; Paul Gallian 1971-6-2 2595 Lassen Hallelujah Jct. intersection of U.S. 395 and Calif. Hwy. 70 1432 Comment
  SBBG67020  Lupinus obtusilobus S. W. Hutchinson -Jun-1925 525 Lassen Eagle Lake 1554 Comment
  CHSC108001  Lupinus polycarpus Lowell Ahart; John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS118457  Lupinus polycarpus Lowell Ahart, John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC16006  Lupinus polyphyllus var. burkei Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  RSA263046  Lupinus sellulus subsp. sellulus B. J. Cox 1971-6-11 3179 Lassen 8 mi. W. of Susanville, on Calif. Hwy. 36. 1555 Comment
  SEINET10490893  Lupinus sellulus var. sellulus Billy Joe Cox 1971-6-11 Cox 3179 Lassen 8 mi. W of susanville, on calif hwy 36 along road cut in volcanic soil; pinus Jeffreyi forest. 1554 Comment
  POM110680  Luzula comosa Marcus E. Jones 1897-7-2 s.n. Lassen Near Prattville at Clear Creek. 1524 Comment
  UC1523742  Lycium barbarum Gary Schoolcraft 1981-7-21 522 Lassen Hayden Hill townsite 1767 Comment
  CDA40734  Lycopus americanus Yeager Aug 1929 s.n. Lassen Honey Lake District. 0 Comment
  JEPS121263  Lythrum hyssopifolia Lowell Ahart, John Dittes 2013-7-23 18896 Lassen Along S margin of the levee road, about 100 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS88431  Lythrum portula Vernon H. Oswald and Lowell Ahart 1996-8-1 8104 Lassen sw of Westwood (ne of Indian Ole Dam, Mountain Meadows Reservoir); Mountain Meadows Reservoir Comment
  HSC93435  Lythrum portula Vernon H. Oswald, L. Ahart 1996-8-1 8104 Lassen Mtn. Meadows Reservoir SW of Westwood, receding shore NE of Indian Ole Dam 1540 Comment
  RSA0105577  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
  SEINET10872918  Machaerocarpus californicus Mary Susan Taylor 1982-6-12 Taylor 4647 Lassen T29N R10E ne/nw sec 13. Westwood quad. Aquatic in still pond on n side of West Fork of Susan River, s side of Hwy 36 at jct w/ Willow Cr Rd, 8 mi w Susanville. Comment
  RSA0011458  Madia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46977 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC342657  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  SEINET11601315 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  CAS-BOT-BC343693  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia Comment
  UCD134243  Madia elegans J. E. Stuart 1929-8-1 2035 Lassen Roy Hardwood Ranch, Milford. Comment
  POM29904  Madia elegans subsp. elegans Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1594645  Madia glomerata Vernon H. Oswald and Lowell Ahart 1992-7-16 5130 Lassen on si side Bridge Creek Spring Road (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
  OBI55501  Madia glomerata David J. Keil, Kathleen Keil 1992-7-25 23607 Lassen Along hwy 36, 9.1 mi E of Plumas County line, W of Susanville Comment
  CAS-BOT-BC343062  Madia gracilis Clare B. Hardham 1969-8-28 17460 Lassen Slope west of Janesville Comment
  RSA713116  Madia minima L. P. Janeway, B. Castro 2005-7-10 8481 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
  CAS-BOT-BC512879  Maianthemum stellatum Louella Bass 1973-5-25 37 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC347439  Malacothrix floccifera Louella Bass 1974-7-1 EV 153 Lassen Elysian Valley 1325 Comment
  CHSC7775  Malva neglecta Beverly J. Wise 1969-5-26 68 Lassen Susanville - 833 Mark St. 1310 Comment
  UC1192360  Marsilea Verne Grant and Irving Schneider 1947-7-31 8219 Lassen irrigation ditch running sw into State Fish and Game nesting area on w end Section 19 Madeline Plain Comment
  UCD107430  Marsilea vestita Tim Kuhn 2006-7-25 13 Lassen Eagle Lake Ranger District. Comment
  JEPS107398  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
  JEPS114634  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-20 14911 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC112767  Matricaria occidentalis Lowell Ahart; John Dittes 2013-7-22 18863 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD54546  Matricaria occidentalis Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2730 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  JEPS88240  Medicago lupulina Vernon H. Oswald and Lowell Ahart 1996-6-17 7812 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, on edge of trail at the 6.0 mi. post e. of Devils Corral Trailhead); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  CHSC7670  Medicago sativa Beverley J. Wise 1969-6-4 63 Lassen North edge of Milford on Hwy 395. 1249 Comment
  JEPS93977  Melica fugax Vernon H. Oswald 1998-6-22 9232 Lassen ca. 18 air mi. n. Westwood (Champs Flat Rd. (A-21) 1.8 mi. n. of Hwy. 44) 1749 Comment
  UC53652  Melica fugax M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC11769  Melica stricta Wayne O. Baum 1971-7-5 71 -3 Lassen E. slope of Gallatin Peak. 2011 Comment
  CHSC106683  Mentzelia albicaulis B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC71128  Mentzelia albicaulis Vernon H. Oswald 1998-5-22 9137 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  UC1609094  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1993-7-8 5654 Lassen 1.9 m N Hwy. 44 (on the SE edge of Poison Lake.); Pittville Rd.(Lassen 111,36N01); T32N R7E SE1/4 SE 1/4 Sec. 4 1709 Comment
  JEPS124816 Image available Mentzelia albicaulis Joe Ammirati 1964-6-30 70 Lassen N. of Susanville ca. 12.3 mi. on HW 139. Comment
  RSA715551  Mentzelia congesta L. Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  UC1483878  Mentzelia congesta G. Schoolcraft 1979-6-26 95 Lassen s Buckhorn Rd.; ; SE1/4 1706 Comment
  CHSC4913  Mentzelia dispersa A. E. Anderson 1967-6-23 10 Lassen Abundant among sagebrush in Jeffrey Pine-Juniper forest around Eagle Lake Biological Station. 1554 Comment
  RSA715543  Mentzelia dispersa L. Ahart 2005-6-1 s.n. Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1121688  Mentzelia dispersa A. Simontacchi 1940-7-8 921 Lassen Blacks Mtn.,Experimental Station, Halls Flat Quad. Comment
  CHSC13731  Mentzelia laevicaulis S. Villard 1973-7-18 54 Lassen Hwy. 139 4 mi. N of Susanville on E side of road. Comment
  CHSC66250  Menyanthes trifoliata Vernon H. Oswald; Lowell Ahart 1996-6-24 7890 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally abundant in shallow water on quaking bog athe the springs on the E side of the meadow. 1633 Comment
  CHSC61178  Micranthes aprica Vernon H. Oswald; Lowell Ahart 1993-5-12 5373 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in the forest. 1737 Comment
  SD8380  Micranthes bryophora Mrs. R. M. Austin 1882-8-7 Lassen Kings Valley 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
  CAS-BOT-BC429080  Micranthes odontoloma George W. Gillett 1957-7-22 886 Lassen Lassen Volcanic National Park. Snag Lake. Near campsite at south end of Lake. 1850 Comment
  CHSC66261  Micranthes oregana Vernon H. Oswald; Lowell Ahart 1996-6-24 7889 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  UC507004  Microseris laciniata subsp. laciniata George A. Fischer and Irwin H. Johnson 1933-7-12 F 195 Lassen Grass Valley Lassen Forest, , Dry Lake 1694 Comment
  HSC28899  Microseris nutans D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19168 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC349299  Microseris nutans Elmer I. Applegate 1929-6-21 5778 Lassen Kelly's Camp, Warner Valley, Mt. Lassen region Comment
  CHSC29930  Microsteris gracilis Robin L. Ondricek 1978-6-20 65 Lassen Callatin Burn, 1.8 mi s of Five Corners. 2011 Comment
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Jan 31 2011
  CHSC71094  Microsteris gracilis Vernon H. Oswald; Lowell Ahart 1998-5-22 9100 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  NY963937  Microsteris gracilis var. humilior V. E. Grant 1956-5-18 9802 Lassen About 8 miles south of Madeline 1280 Comment
  UCR201581  Mimulus Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  UC1609365  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  CHSC117184  Mimulus guttatus Lowell Ahart; John Dittes 2016-6-7 21009 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  JEPS127176  Mimulus guttatus Lowell Ahart, John Dittes 2016-7-15 21224 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS28988  Mimulus guttatus Frances D. Payne 1929-7-12 97 Lassen near s extremity Warner Range; Upper Silver Creek 2499 Comment
  CDA41794  Mimulus guttatus T. C. Fuller 1961-5-17 6961 Lassen Hot springs, Wendell. 0 Comment
  JEPS23844  Mimulus inflatulus Peter H. Raven with Otto T. Solbrig 1958-6-17 13298 Lassen 4.8 mi s Madeline (along United States Highway 395) Comment
  JEPS107380  Mimulus mephiticus Lowell Ahart, John Dittes 2005-6-1 11869 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC725552  Mimulus microphyllus A. A. Heller 1941-6-26 16232 Lassen ridge w Nieubieber Comment
  SEINET10570251  Mimulus nanus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17798 Lassen 6 mi n of halleluja hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  HSC63954  Mimulus nanus var. mephiticus Teresa Prendusi 1980-7-1 Lassen Champ's Flat 1707 Comment
  LA209350  Mimulus nanus var. mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 sn Lassen Near Old Chat Comment
  LA95554  Mimulus nanus var. mephiticus Frank W. Peirson; 6853 Lassen Madeline Plain Comment
  UCD149990  Mimulus nanus var. mephiticus William Anderson 1963-6-9 s.n. Lassen Honey Lake Valley. Comment
  RSA536401  Mimulus nanus var. nanus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-18 628 Lassen Grays Valley, ca. 4 mi NW of USFS Bogard Work Center. 1715 Comment
  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
  POM43553  Mimulus suksdorfii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1736253  Mimulus suksdorfii Dean W. Taylor 1992-5-7 12547 Lassen Eagle Lake Region, Pine Creek, on Forest Road 33N07 ca. 0.8 mile S of Byrgess Flat, 1767 Comment
  UC1561993  Mimulus torreyi Barbara Ertter 1987-7-25 7317 Lassen Hwy 44 ca 1 mi e Shasta Co. line 1645 Comment
  CAS-BOT-BC221781  Monardella odoratissima L. P. Janeway 1990-7-4 3771 B Lassen Ca 0.9 mi NE of Meadowview [Mountain View] Peak 1981 Comment
  CHSC29936  Monardella odoratissima subsp. glauca Robin L. Ondricek 1978-6-27 79 Lassen Pine Creek, sw of the bridge which crosses the creek just upstream (sw) of the California Dept. of Fish and Game's fish milking station. 1566 Comment
  JEPS95713  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  RSA0037134  Monardella odoratissima subsp. glauca L. P. Janeway, B. Castro 2012-7-2 10933 Lassen Modoc Plateau. Along Skedaddle Ranch Road 6.4 road km north of Skedaddle Creek at an unnamed tributary of Bull Creek. 1533 Comment
  UC1124581  Monardella odoratissima subsp. glauca H. P. Hagge 1929-9-11 19 Lassen Logan Mtn. Eagle Lake Quadrangle Comment
  CHSC5271  Monardella odoratissima subsp. pallida M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  UC2035929  Monardella odoratissima subsp. pallida John Thomas Howell 1934-7-9 12525 Lassen Pine Creek Flat Comment
  UC25488  Monardella odoratissima subsp. pallida M. S. Baker and Frank Nutting 1894-7-28 Lassen mts. s Eagle Lake Comment
  HSC81781  Monolepis nuttalliana Thomas W. Nelson, Jane Nelson 1980-7-6 6013 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 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
  OBI77205  Monolepis nuttalliana Anthony Baniaga 2011-7-23 462 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  RSA370315  Monolepis pusilla A. Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10351 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
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Feb 14 2017
  POM103154  Monolepis spathulata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC57311  Montia chamissoi Mary Meyer 1980-7-9 Lassen In Horse Camp Spring. 1706 Comment
  CHSC60764  Montia chamissoi Vernon H. Oswald; Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02), 5.3 mi E of Lassen 105 (32N28Y), near Summit Camp, ca. 7 mi (air) W of Eagle Lake. Common in shallow water and on wet soil along a streamlet draining into a pond located in a small meadow surrounded by open pine woodland with an understory of sagebrush. 1889 Comment
  NY497723  Montia chamissoi N. H. Holmgren 1978-6-11 8917 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
  UC1136742  Montia chamissoi Robert W. Gardner 1937-6-14 G 3 Lassen Burgess Spring Experimental Range 1767 Comment
  UC1136743  Montia chamissoi A. Simontacchi 1940-5-17 742 Lassen 5.9 mi s of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 Comment
  CAS-BOT-BC444691  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail. 1905 Comment
  JEPS107818  Montia linearis Lowell Ahart, John Dittes 2005-6-2 11956 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  UC1136744  Montia linearis A. Simontacchi 1940-5-14 711 Lassen 10.2 mi e of Coyote Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  UCD86573  Muhlenbergia asperifolia Leo Whitney 1934-7-4 2212 Lassen Lassen National Forest. Eagle Lake. 1584 Comment
  CDA32536  Muhlenbergia asperifolia T. C. Fuller 1980-8-6 20317 Lassen Rush Creek, north of Smoke Creek Ranch Road, 2 km. west of the stateline, 28.75 km. (18.5 mi.) northeast of Hwy 395, northeast of Ravendale. 0 Comment
  CAS-BOT-BC260597  Muhlenbergia filiformis Leo W Whitney 1933-8-4 2160 Lassen Near Sheepshead Comment
  RSA129384  Muhlenbergia filiformis H. S. Yates 1936-8-12 6018 Lassen Susanville. 1524 Comment
  UC1024685  Muhlenbergia filiformis Leo Whitney 1933-8-3 2160 Lassen ca 10 mi nw north end of Eagle Lake; Lassen National Forest, Sheepshead 1889 Comment
  CAS-BOT-BC275333  Muhlenbergia jonesii John R. Reeder; Charlotte G. Reeder 1973-7-1 6240 Lassen Ca. 25 miles NW of Susanville along State Highway 44 in Lassen National Forest 1767 Comment
  CHSC58862  Muhlenbergia richardsonis Vernon H. Oswald; Lowell Ahart 1992-7-16 5105 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. On the margin of the lake. 1745 Comment
  POM114433  Muhlenbergia richardsonis Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  RSA129676  Muhlenbergia richardsonis G. A. Fischer, Irwin Johnson 1933-7-12 F- 224 Lassen Lassen National Forest; Stringer Meadow. 1723 Comment
  SEINET4690286  Muhlenbergia richardsonis G. Schoolcraft 1999-6-30 2852 Lassen Small res. 1 mi. w. of Horne Ranch-12 mi. e. of Ravendale, CA., Susanville 1646 Comment
  CHSC91191  Muilla transmontana Lowell Ahart; John Dittes 2005-6-1 11855 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
  CHSC66236  Myosotis micrantha Vernon H. Oswald; Lowell Ahart 1996-6-24 7880 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Along Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  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
  CHSC112462  Myosurus minimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18726 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
  JEPS114645  Myosurus minimus Lowell Ahart, John Dittes 2008-6-20 14940 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  NY492693  Myosurus minimus P. H. Raven 1958-6-17 13285 Lassen Along U. S. Highway 395, 1.9 miles south of Ravendale Comment
  CHSC77217  Myriophyllum quitense G. Schoolcraft 1996-7-10 2533 Lassen Willow Creek, ne. of Susanville. 1432 Comment
  JEPS45716  Myriophyllum quitense W. L. Jepson 1918-8-16 8002 Lassen Merrillville 1524 Comment
  RSA233733  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39134 Lassen Said Valley Reservoir. Comment
  UC1101499  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
Read comments
Aug 12 2008
  RSA323647  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  SEINET12184862  Myriophyllum spicatum Unknown 1967-1 592 Lassen ca 5 mi E of Eagle Lake Biology Station at point where rd. comes nearest to Willow Creek 1561 Comment
  UC585170  Nama aretioides var. multiflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1773 Lassen Red Rock 1280 Comment
  CDA40304  Nama aretioides var. multiflora S. E. Piper 1943-7-2 s.n. Lassen 0.5 mile east of Herlong. 0 Comment
  SEINET10969184  Nama densa Mary Susan Taylor 1974-1 Taylor 305 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC735057  Nama densa var. parviflora Lincoln Constance 1946-7-3 3099 Lassen 7 mi n of Spaldings (northern edge of Eagle Lake); northern edge of Eagle Lake 1676 Comment
  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
  CDA40080  Navarretia breweri T. C. Fuller 1980-8-5 20306 Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, in campground area. Comment
  SD3921  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UCD32675  Navarretia breweri Beecher Crampton 1954-7-6 2080 Lassen Lassen County, 3 miles north of Madeline, along US highway 395. Comment
  CHSC14175  Navarretia divaricata K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5806 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  UC1124159  Navarretia divaricata A. Simontacchi 1940-5-28 777 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC773937  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spring Experiment Range Lassen Forest 1844 Comment
  UC1124160  Navarretia intertexta A. Simontacchi 1940-6-30 904 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  POM74488  Navarretia intertexta Marcus E. Jones 1897-7-1 10134 Lassen 7 miles south of Susanville at Perkin's Ranch 1524 Comment
  JEPS127278  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2016-7-13 21131 Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC20104  Navarretia intertexta subsp. propinqua M. S. Taylor 1974-7-10 277 Lassen In vernal pool on edge of meadow, ca. 1/2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  UC1184059  Navarretia intertexta subsp. propinqua Jean Langenheim 1957-6-22 4366 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  UC1594649  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5111 Lassen s side Hwy. 44 (Bridge Creek entering McCoy Flat Reservoir, between Old Station and Susanville); McCoy Flat Reservoir, Bridge Creek 1691 Comment
  CHSC1252  Navarretia leptalea K. Chew 1951-7-8 Lassen Stephens Meadows, Pine Creek. 1706 Comment
  JEPS19812  Navarretia leucocephala Rimo Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  CAS-BOT-BC230335  Navarretia leucocephala Mrs. H. C. Cantelow 1940-5-31 4144 Lassen E of Bieber Comment
  CAS-BOT-BC230387  Navarretia leucocephala subsp. minima James Jokerst 1983-7-24 1882 Lassen Near Madeline Plains 1614 Comment
  JEPS120031  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2012-7-9 18288 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
  JEPS19814  Navarretia leucocephala subsp. minima Rimo Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  POM75594  Navarretia leucocephala subsp. minima Marcus E. Jones 1897-6-18 10107 Lassen Chat. 1524 Comment
  RSA0035408  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 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
  UC1137584  Navarretia leucocephala subsp. minima A. Simontacchi 1940-6-15 872 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC909096  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 a Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  UC1137583  Navarretia linearifolia subsp. linearifolia A. Simontacchi 1940-6-4 803 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  POM68111  Nemacladus sigmoideus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  JEPS107402  Nemophila parviflora var. austiniae Lowell Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  RSA38472  Nemophila parviflora var. austiniae P. A. Munz 1947-5-18 11860 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  JEPS120810  Nemophila pedunculata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18724 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
  CHSC4786  Neoholmgrenia andina R. Carter 1967-6-29 572 Lassen On roadside, N side of Rd. Along road to Murrer's Meadow, Eagle Lake. 1584 Comment
  JEPS19729  Neoholmgrenia andina Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5992 Lassen about 1 mi n Sage Hen siding on S.P. Railway (along U.S. Hwy 395, and 7.0 mi n of Madeline) 1676 Comment
  CHSC116095  Nepeta cataria Lowell Ahart; John Dittes 2015-7-13 20313 Lassen Along levee road, 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
  HSC22942  Nicotiana acuminata John Pratt 1970-6-27 46 Lassen 0.5 mi. E of Turtle Head 1220 Comment
  CHSC65361  Nicotiana attenuata Vernon H. Oswald; Lowell Ahart 1995-8-14 7182 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  UC1037191  Nicotiana attenuata Leo Whitney 1933-8-22 1500 Lassen base of Harvey Mountain; Lassen National Forest 1889 Comment
  CDA41136  Nicotiana attenuata T. C. Fuller 1959-7-7 4734 Lassen Highway 395, 2.4 miles south of road to Karlo. 0 Comment
  HSC21267  Nicotiana attenuata M. T. Milligan 1964-8-23 238 Lassen 400 yards E of Siad Valley Reservoir on Termo Rd. 1524 Comment
  UC7442  Nitrophila occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3326 Lassen Honey Lake Valley 1219 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
  UC584293  Nothocalais troximoides G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2309 Lassen w Milford; crest of range head of Stony Ridge 1950 Comment
  UCD134648  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen South of CR. 512, south of Red Rock Lake. 1828 Comment
  CAS-BOT-BC171461  Oenothera boothii subsp. alyssoides Louella Bass 1982-6-20 s.n. Lassen Cemetery gate, McKissick Comment
  JEPS124824 Image available Oenothera deltoides B. Wenegrat 1969-7-8 52 Lassen off H. 395 8 miles S of Milford. Comment
  JEPS124825 Image available Oenothera deltoides C. Meek 1969-7-8 68 Lassen Along Hi #395, 1 mi south of intersection to Herlong Army Depot, 8 mi. south of Milford. Comment
  UC1584022  Oenothera deltoides subsp. cognata G. Schoolcraft 1990-6-12 2086 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CHSC26139  Oenothera deltoides subsp. piperi Detzer; Sacks 1977-6-27 46 Lassen On bank along Hwy. 395, ca. 4 km w of Milford. 1386 Comment
  CHSC71093  Oenothera deltoides subsp. piperi Vernon H. Oswald; Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. On roadside banks along this section of highway. 1255 Comment
  UC1122216  Oenothera deltoides subsp. piperi E. Sawyer 1935-6-27 231 Lassen Long Valley Sierraville Quadrangle Comment
  SEINET10491876  Oenothera deltoides subsp. piperi Paul Gallian, David B. Dunn 1971-6-2 Gallian 491 Lassen 5 mi s of milford near honey lake on us hwy 395; along roadside in grass artemesia tridentata assoc; quercus jeffery pine on mtn range to west at approximately the same altitude. 1250 Comment
  NY998639  Oenothera deltoides var. piperi W. W. Eggleston 1911-5-29 6745 Lassen Vicinity of Doyle Station 393 Comment
  UC1562804  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved rd) 1524 Comment
  SD243287  Onopordum acanthium D. B. Joley 1976-6-16 21 Lassen Grasshopper Lake Comment
  SEINET6188292  Oreocarya schoolcraftii G. Schoolcraft 1999-7-12 2858 Lassen N. of Tuledad Canyon near NV stateline. 1737 Comment
  CAS-BOT-BC350039  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen About a mile east of Westwood 1524 Comment
  CAS-BOT-BC350046  Oreostemma alpigenum var. andersonii John Thomas Howell 1934-7-9 12515 Lassen Bridges Creek Spring Comment
  HSC103620  Oreostemma alpigenum var. andersonii Thomas W. Nelson, Jane Nelson 1985-8-10 8015 Lassen Along north side of Silver Lake 1829 Comment
  OBI75869  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
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Apr 29 2013
  HSC93438  Oreostemma elatum Vernon H. Oswald 1996-8-1 8120 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  CDA42001  Orobanche corymbosa T. C. Fuller 1980-8-5 20313 Lassen Along east side of Tuledad Road, 7.4 km. southeast of the campground on the east shore of Dodge Reservoir, northeast of Ravendale. 0 Comment
  UCR244039  Orobanche fasciculata Jim Andre 1993-6-1 19709 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC500271  Orobanche uniflora subsp. occidentalis H. C. Cantelow 1941-5-22 s.n. Lassen 13.5 mi W of Susanville, at Fredonyer Pass Comment
  CAS-BOT-BC266614  Orthocarpus cuspidatus Lassen 1927 G. S. Crew 1927-7-15 66 Lassen 1 mile W Bogard Ranger Station 1737 Comment
  CHSC12936  Orthocarpus cuspidatus subsp. cryptanthus K. R. Stern 1974-6-26 5870 Lassen N margin of meadow on s side of Hwy. 44, 5.6 mi n of intersection with County Rd. A-21 to Westwood. Comment
  CHSC37345  Orthocarpus cuspidatus subsp. cryptanthus J. D. Prouty 1978-6-28 5 Lassen Lower Dry L., SE of Eagle L. 1645 Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  JEPS9435  Orthocarpus cuspidatus subsp. cryptanthus Brown and Wieslander 42 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  UC1523713  Orthocarpus cuspidatus subsp. cryptanthus Gary Schoolcraft 1981-7-6 616 Lassen near top Goodrich Mtn.; near top of Goodrich Mtn. 1828 Comment
  JEPS124596 Image available Orthocarpus imbricatus Dixie Funnell 1965-7-13 146 Lassen 4.2 miles West of Dead Horse Summit Highway 89. Comment
  RSA0089259  Orthocarpus purpurascens Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  POM82978  Osmorhiza berteroi Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  JEPS114621  Packera cana Lowell Ahart, John Dittes 2008-6-19 14877 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC35980  Packera eurycephala var. eurycephala Mrs. C. C. Bruce June 1898 2176 Lassen Shumway Comment
  UC35992  Packera subnuda M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC65093  Packera subnuda var. subnuda Vernon H. Oswald; Lowell Ahart 1995-7-24 7136 Lassen High Cascade Range. Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. In meadow bordering the creek. 1905 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-BC10429  Paeonia brownii J. T. Howell 1934-6-14 12146 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CHSC6195  Paeonia brownii P. Balch 1955-7-22 Lassen Roadside meadow 3 1/2 mi. from Antelope Lookout. Eagle Lake. 2133 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
  SEINET4691127  Panicum capillare A. Tiehm 1980-1 5759 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel 1220 Comment
  SEINET229883 Image available Pappostipa speciosa G. Schoolcraft 1982-6-22 721 Lassen N end of Fort Sage Mts. 1524 Comment
  CAS-BOT-BC259609  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE of Shaffer Mountain 1356 Comment
  CDA5489  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  CDA5491  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  JEPS94120  Pectocarya penicillata Vernon H. Oswald and Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  SEINET10456341  Pectocarya penicillata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 874 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. 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
  SBBG68675  Pedicularis attollens S. W. Hutchinson -Jun-1925 1092 Lassen Eagle Lake 1554 Comment
  SBBG7089  Pedicularis attollens H. and M. Dearing 1938-7-1 2238 Lassen 12 mi W of Susanville Comment
  UC41744  Pedicularis groenlandica M. S. Baker and Frank Nutting 1894-7-12 Lassen Comment
  CHSC4924  Pedicularis semibarbata L. G. Bennett 1967-7-14 142 Lassen Immediate vicinity of Silver Lake. 1975 Comment
  SEINET10549211  Pedicularis semibarbata Mary Merello 1993-6-28 Merello 754 Lassen Lassen National Forest. Along Forest Service Road 33N02 to Harvey Mountain Lookout and Harvey Valley. Open pine scrub and sagebrush woodland. 1740 Comment
  SEINET3836472 Image available Pedicularis semibarbata Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Susanville, Perkin's Ranch 1829 Comment
  UC1523781  Pedicularis semibarbata G. Schoolcraft 1981-6-30 487 Lassen western slopes of Roop Mountain 1889 Comment
  UC506905  Pedicularis semibarbata George A. Fischer, Irwin H. Johnson 1933-7-19 F 272 Lassen Lassen National Forest 1737 Comment
  UC303057  Pellaea brachyptera Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC30575  Penstemon cinereus Soir H. Shad 1970-7-1 38 Lassen Found in Dean's Meadow, at about 5 miles south of E. L. B. S. 1950 Comment
  JEPS8094  Penstemon davidsonii var. davidsonii W. L. Jepson 1910-6-11 4117 Lassen Cinder Cone 2133 Comment
  JEPS11227  Penstemon deustus var. pedicellatus Jos. Grinnell 1928-6-18 Lassen Eagle Lake 1584 Comment
  CHSC68880  Penstemon gracilentus Vernon Oswald; Lowell Ahart 1997-6-24 8589 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  NY600719  Penstemon gracilentus A. M. Alexander 1946-8-13 5157 Lassen West side of Eagle Lake Comment
  UC1137680  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen National Forest 1783 Comment
  NY627264  Penstemon neotericus J. T. Howell 1973-7-10 49758 Lassen Near Westwood, Sierra Nevada 1554.5 Comment
  NY627256  Penstemon neotericus K. A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mountain; along CA A1, ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  NY627261  Penstemon neotericus F. W. Pennell 1940-7-23 26248 Lassen Route 36, 3 miles northwest of Westwood 1585.0 Comment
  SEINET10547622  Penstemon oreocharis Mary Susan Taylor 1974-1 Taylor 287 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET5323576 Image available Penstemon procerus var. procerus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC36485  Penstemon roezlii Margaret E. Halloran 1982-6-4 3 Lassen .5 mi e Murrers Upper Meadow on road to meadow. Comment
  CHSC37349  Penstemon roezlii Jennifer Estep 1978-6-27 19 Lassen Dry L., E of Eagle L. 1645 Comment
  NY650095  Penstemon roezlii N. H. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 miles) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 miles) airline distance southeast of Ravendale. 1580 Comment
  RSA339998  Penstemon roezlii Noel Holmgren, Patricia K. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from US Hwy 395 via Rye Patch canyon, 24 km (15 mi) airline distance southeast of Ravendale. 1585 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
  UC1924562  Penstemon roezlii Debra Valov 2006-5-29 2006034 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1294 Comment
  SEINET12326936  Penstemon rydbergii L. E. Ray 1967-1 100 Lassen 8 mi S ELBS, Deans Meadow 1951 Comment
  SEINET5323614 Image available Penstemon rydbergii N. H. Holmgren, P. K. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CAS-BOT-BC239506  Penstemon rydbergii var. oreocharis L. B. Barlow 1967-7-4 89 Lassen 5 mi. south of Eagle Lake Biological Sation on Gallatin Beach Road 1737 Comment
  CAS-BOT-BC239510  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 4 miles east of Westwood 1432 Comment
  CHSC116103  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2015-7-13 20316 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
  CHSC27679  Penstemon rydbergii var. oreocharis J. D. Prouty 1978-7-27 28 Lassen W of Eagle L. in small swale just n of Rd 105 on E margin of Champs Flat. 1694 Comment
  CHSC4754  Penstemon rydbergii var. oreocharis R. Carter 1967-7-14 612 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir. Comment
  CHSC59826  Penstemon rydbergii var. oreocharis Mary Meyer 1980-7-9 Lassen In dry meadows 1 mi northwest of Horse Camp Spring. 1706 Comment
  JEPS11488  Penstemon rydbergii var. oreocharis Dr. R. H. Longbridge 1912-1 Lassen Madeline Plains Comment
  JEPS6627  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen along Highway #36 one mi e Westwood; e of Westwood 1524 Comment
  NY651293  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 3 miles east of Westwood Comment
  RSA702452  Penstemon rydbergii var. oreocharis L. P. Janeway 2004-6-26 8161 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC1012182  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36 road to Coppervale R.S., e Westwood; e of Westwood 1493 Comment
  UCD39133  Penstemon rydbergii var. oreocharis Beecher Crampton 1964-6-26 7081 Lassen 32 miles n.w. Susanville east end of Harvey Valley. 1694 Comment
  JEPS101465  Penstemon speciosus Dean W. Taylor 1974-6-14 3721 Lassen Janesville Grade road about 4 miles SSW Janesville, Plumas National Forest 1706 Comment
  RSA401878  Penstemon speciosus Rockwell 1925-07 s.n. Lassen Eagle Lake. Comment
  SBBG26872  Penstemon speciosus D. D. Keck 1930-7-23 50 Lassen Susanville 1280 Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC1226034  Penstemon speciosus Arthur Cronquist, Arthur H. Holmgren 1959-6-16 8455 Lassen 26 mi nw Reno; nw of Reno Comment
  UC423512  Penstemon speciosus David D. Keck 1930-7-23 947 Lassen Reno Junction Sierra Nevada, Reno Junction (southeastern Lassen County) 1493 Comment
  UC1012214  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi n of junction with Route #24 (ne of Plumas); ne of Plumas 1524 Comment
  NY661060  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats) southeastern Lassen County. 1493.5 Comment
  CAS-BOT-BC239663  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36, west of Susanville 1371 Comment
  CAS-BOT-BC243405  Penstemon sudans H. D. Ripley; R. C. Barneby 1943-6-14 5739 Lassen W. of Susanville 1371 Comment
  CHSC114420  Penstemon sudans Loren Gehrung 2005-7-7 Lassen North side of Highway 36 near Devils Corral at Hidden Valley, about six miles west of Susanville, California. 1432 Comment
  JEPS103201  Penstemon sudans G. Schoolcraft 1990-7-2 2101 Lassen top of Cold Spring Mountain 2130 Comment
  NY661802  Penstemon sudans W. W. Eggleston 1911-7-7 7177 Lassen Secret Valley 1330 Comment
  UC1012184  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36 hill w Susanville; hill w of Susanville 1371 Comment
  UC565390  Peraphyllum ramosissimum Junea Kelly 1937-5-30 Lassen Mapes Comment
  CHSC29907  Perideridia bolanderi Robin Ondricek; Wesley Dempsey 1978-6-7 43 Lassen Ridge E of Lower Dry Lake, 12.5 mi N of Susanville. 1706 Comment
  CHSC7747  Perideridia bolanderi Beverly J. Wise 1969-5-18 114 Lassen 15.9 mi. East of Susanville on Las. Co. Rd. 216 of Las. Co. Rd. 215. 1554 Comment
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  HSC73083  Perideridia gairdneri subsp. gairdneri Cindy Prouty 1978-7-11 19 Lassen Papoose Creek, S of Gallatin 1585 Comment
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  CHSC77223  Persicaria lapathifolia G. Schoolcraft 1996-9-11 2560 Lassen Lower end of Willow Creek below petroglyphs and above dam. 1341 Comment
  UC726890  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen along Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  UCD120554  Phacelia adenophora Beecher Crampton 1964-6-27 7092 Lassen West of Termo, Madeline Plains. Comment
  HSC30187  Phacelia hastata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19262 Lassen Harvey Valley near Cone Springs Comment
  JEPS118499  Phacelia hastata A. Holmen 2011-8-23 CA 320 -94 Lassen South US Hwy 295 to Termo and turn left onto Lassen Co. Rd 508 (Juniper Ridge Rd). Follow this road for 11 miles to Cold Springs Rd and head north for 3.3 miles. Turn left and travel 1.5 miles. Collection site will be to the west heading up draw. Comment
  SDSU6617  Phacelia hastata D. F. Howe 1964-7-1 3913 Lassen 4.8 miles from Harvey Creek on ridge road, Modoc National Forest, 2134 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
  CHSC63401  Phacelia humilis Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6314 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  JEPS118501  Phacelia humilis A. Holmen 2011-8-12 CA 320 -92 Lassen US Hwy 395 South to Termo. Turn East onto Lassen Co. Rd 508 (Juniper Ridge Rd). Continue approximately 11 miles to Cold Springs Rd and head north for 3 miles. Turn and travel about 1 mile. Collection site is along road. Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  NY1057847  Phacelia humilis N. H. Holmgren 1978-6-11 8908 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  UC1537529  Phacelia humilis Gordon H. True Jr. 1936-6-27 565 Lassen n slope Hot Springs Mountain 1676 Comment
  UC1537537  Phacelia humilis Gordon H. True Jr. 1938-7-9 907 Lassen near Horse Lake 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
  RSA38465  Phacelia humilis var. humilis P. A. Munz 1947-5-20 11885 Lassen Laufman Forestry Public Camp above Milford. 1524 Comment
  UCD120534  Phacelia humilis var. humilis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake, Warner Mountains, Modoc National Forest, northeastern part of county (ca. 18 miles airline southeast of Likely). 1905 Comment
  CAS-BOT-BC145034  Phacelia inundata John Thomas Howell 1934-7-8 12510 Lassen Spaldings resort, Eagle Lake Comment
  UC932054  Phacelia inundata Verne Grant and Alva Grant 1947-9-5 8374 Lassen nw shore Eagle Lake Comment
  CHSC106571  Phacelia linearis Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  GMDRC7731  Phacelia linearis J. M. Andre, G. Clifton 1993-6-1 33407 Lassen Modoc Plateau: along US Hwy 395, approx. 30 mi. NE of Susanville, north end of Secret Valley, SE end of Snowstorm Mtn, about 15 mi. SSE of Ravendale 1375 Comment
  SD6842  Phacelia linearis Mrs. R. M. Austin 1879-1 Lassen Eagle Lake Comment
  SFV3020  Phacelia linearis I. L. Wiggins, D. B. Wiggins 1961-6-16 16530 Lassen Big Valley Mountains. South-facing road-cut slope, 0.8 miles west of summit of Big Velley Pass. 1380 Comment
  UC1609380  Phacelia linearis Vernon H. Oswald and Lowell Ahart 1993-6-14 5532 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach Eagle Lake (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), upper beach between road and lake) 1566 Comment
  UC699732  Phacelia linearis Farris Farris 1936-6-5 Lassen Susanville 1371 Comment
  UCR80208  Phacelia linearis J. T. Howell 1934-6-10 11901 Lassen 3 mi. south of Ravendale. 1638 Comment
  NY998461  Phacelia linearis J. T. Howell 1934-6-10 11901 Lassen 3 miles south of Ravendale Comment
  NY1056456  Phacelia lutea var. glandulifera L. Constance 1938-6-11 2329 Lassen Throughout the Madeline Plains from Litchfield to Madeline 1219 Comment
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  NY1056499  Phacelia lutea var. lutea M. J. Williams 1986-5-12 86- 21 --1 Lassen Smoke Creek Road, east of Highway 395 1448 Comment
  CHSC111256  Phacelia mutabilis L. P. Janeway; B. Castro 2012-7-3 10939 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
  OBI82828  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  CAS-BOT-BC159229  Phacelia ramosissima var. subglabra John Thomas Howell 1934-6-30 11873 Lassen Janesville Comment
  CHSC64879  Phacelia thermalis Vernon H. Oswald; Lowell Ahart 1995-6-19 6902 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395. 1444 Comment
  SJSU14072  Phacelia thermalis W. Savage 1964-6-30 338 Lassen by Hwy 338, 11 mi N of Susanville Comment
  UC1567390  Phacelia thermalis G. Schoolcraft 1989-5-3 1868 Lassen s Karlo; North end of Secret Valley 1341 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
  CAS-BOT-BC250846  Phleum pratense Malcom A. Nobs; S. Galen Smith 1949-7-21 1056 Lassen 4 miles north of Madeline Comment
  UC1137767  Phlox douglasii subsp. rigida August L. Hormay 1934-7-10 Lassen Halls Flat Lassen National Forest 1706 Comment
  JEPS114635  Phlox gracilis Lowell Ahart, John Dittes 2008-6-20 14929 Lassen Around vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA647573  Phlox longifolia Marion P. Harthill 1971-6-21 226 Lassen Ravendale Comment
  RSA647574  Phlox longifolia Marion P. Harthill 1971-6-21 227 Lassen Ravendale Comment
  NY963723  Phlox speciosa LeDoux 1973-5-25 867 Lassen Collected 3 miles north of Milford, on Highway 395 at Honey Lake campgrounds Comment
  RSA104310  Phlox speciosa subsp. occidentalis Verne Grant, Alva Grant 1956-5-17 9797 Lassen Just north of Milford on Highway 395 1311 Comment
  NY963725  Phlox speciosa var. nitida H. D. D. Ripley 1944-5-29 5955 Lassen South of Janesville 1280 Comment
  CHSC106582  Phlox stansburyi C. Dow; D. Rojas 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC106966  Phlox stansburyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UCD118467  Phlox stansburyi Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  CAS-BOT-BC60619  Phoenicaulis cheiranthoides Clare B. Hardham 1971-8-22 18368 Lassen Diamond Mountain. 2346 Comment
  CHSC48338  Phoenicaulis cheiranthoides Vernon Oswald 1986-5-28 2061 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  NY746914  Phoenicaulis cheiranthoides N. H. Holmgren 1980-7-4 9515 Lassen Observation Peak, near the top of the mountain, 17 km (10.5 mi) air distance east of Ravendale 2420 Comment
  JEPS127162  Phoradendron bolleanum Lowell Ahart, John Dittes 2016-7-13 21136 Lassen 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at southern slope of Big Valley. Comment
  CAS-BOT-BC60738  Physaria occidentalis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50655 Lassen Sierra Nevada. Summit ridge of Diamond Mountain. 2346 Comment
  UC74048  Picrothamnus desertorum J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  CHSC6220  Pinus contorta subsp. murrayana P. Balch 1955-7-3 Lassen Eagle Lake Resort. 1615 Comment
  SEINET11604123  Pinus jeffreyi D. Charlet, Darryl LeMaire 1994-7-8 1941 Lassen Sierra Nevada, Near summit of Doyle grade 1707 Comment
  CHSC12502  Pinus lambertiana Carol Weld 1969-6-20 13 Lassen Road between Five Corners and Dean's Meadow. 1889 Comment
  CHSC4461  Pinus ponderosa C. Glascock 1965-2-7 224 Lassen 1.2.mi. w of Susanville Forest Ranger Station, Hwy. 36, ca. 20 ft. from road's edge. Comment
  UCSB48306  Plagiobothrys canescens Hardham, Clare 1961-6-17 Lassen Baxter Creek S. of Susanville 1676 Comment
  CHSC60332  Plagiobothrys cognatus Mary Ann Showers 1992-6-13 2547 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 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
  JEPS117204  Plagiobothrys cusickii Lowell Ahart, John Dittes 2010-7-31 17014 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
  JEPS121292  Plagiobothrys cusickii Lowell Ahart, John Dittes 2013-7-22 18870 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA0035913  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2008-6-20 14914 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  CAS-BOT-BC224976  Plagiobothrys hispidulus Clarence R. Quick 1962-6-17 62 27 C Lassen Swains Hole, S of Blacks Mountains Experimental Station 1615 Comment
  CHSC59082  Plagiobothrys hispidus Vernon H. Oswald; Lowell Ahart 1992-8-25 5193 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. 1851 Comment
  UC100839  Plagiobothrys hispidus Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  CHSC64768  Plagiobothrys leptocladus Vernon H. Oswald 1995-5-24 6780 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  CAS-BOT-BC228467  Plagiobothrys mollis Peter H. Raven; Otto T. Solbrig 1958-6-17 13258 Lassen Near pond along Highway 395, 7.1 miles W of Standish Comment
  CHSC116091  Plagiobothrys mollis var. mollis Lowell Ahart; John Dittes 2015-7-13 20306 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC66721  Plagiobothrys mollis var. mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  RSA337274  Plagiobothrys scouleri Noel Holmgren, Patricia K. Holmgren 1980-7-3 9476 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
  JEPS124369  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2015-7-13 20319 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0105588  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2013-7-22 18873 Lassen 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
  JEPS107448  Plagiobothrys tenellus Lowell Ahart, John Dittes 2005-6-1 11883 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction 1438 Comment
  POM368959  Plagiobothrys tenellus Christopher Davidson 1975-6-7 2766 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  SBBG19323  Plagiobothrys torreyi C. B. Hardham 1961-6-17 7509 Lassen Baxter Crk, S of Susanville 1676 Comment
  JEPS103179  Plantago lanceolata G. Schoolcraft 2000-6-5 2897 Lassen Hwy 395 and Johnstonville Road near Susanville Airport 1310 Comment
  CHSC6278  Platanthera leucostachys M. West 1946-7-7 Lassen Butte Creek. Comment
  CHSC107326  Plectritis macrocera Lowell Ahart; John Dittes 2011-6-20 17494 Lassen Meadow, about 30 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC117208  Plectritis macrocera Lowell Ahart; John Dittes 2016-6-7 21005 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS120863  Plectritis macrocera Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18747 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
  SEINET8658736  Plectritis macrocera C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CHSC7736  Pleiacanthus spinosus Beverley J. Wise 1969-5-23 79 Lassen 33.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  RSA484154  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
  UCD92172  Poa A. A. Beetle 1941-6-28 2815 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  UCD92183  Poa George A. Fischer; Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat - Lassen Nat'l Forest. 1737 Comment
  SEINET10863882  Poa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17758 Lassen Approx. 12 mi S of Adin on Calif. Hwy 139, in basalt & clay; along edge of road on rolling knoll, in Artemesia_Juniper assoc. 1372 Comment
  RSA450966  Poa bulbosa Barbara Shervanick 1974-5-7 1265 Lassen Highway 396, just south of Milford; Cascade Mountain Range 1372 Comment
  UC1924563  Poa bulbosa Debra Valov 2006-5-30 2006035 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UCD54537  Poa bulbosa Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2722 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CAS-BOT-BC255033  Poa compressa John Thomas Howell 1974-7-10 50553 Lassen Elysian Valley 1325 Comment
  UCD90891  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen northeastern part of county. Long Valley, 6 miles southeast of Jess Valley, southern Warner Mountains. 2133 Comment
  JEPS107983  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes 2005-6-2 11927 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
  UC1024881  Poa cusickii subsp. cusickii Leo Whitney 1935-5-26 3141 Lassen 10 mi e Adin (Ash Creek) Comment
  HSC95195  Poa leptocoma subsp. leptocoma Gordon Leppig, J. Cromwell 1997-7-27 629 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC247256  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadow Comment
  CAS-BOT-BC247319  Poa pratensis Louella Bass 1973-5-29 EU 67 Lassen Elysian Valley 1325 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
  RSA647525  Poa secunda Marion P. Harthill 1972-6-17 824 Lassen Madeline. 1677 Comment
  SD34460  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 miles west of Chester, rte. 36, mountain meadow near small stream 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-BC236250  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  CAS-BOT-BC236253  Poa secunda subsp. juncifolia John Thomas Howell 1934-7-6 12459 Lassen Harvey Valley Comment
  JEPS70648  Poa secunda subsp. juncifolia Dr. Longbridge 1912-1 Lassen Amadee Comment
  UC1024690  Poa secunda subsp. juncifolia Leo Whitney 1933-7-15 2155 Lassen ca 16 mi w of upper end Eagle Lake (Harvey Mt); Lassen Nat'l Forest 1981 Comment
  UC1024831  Poa secunda subsp. juncifolia Leo Whitney 1935-6-12 3229 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1136986  Poa secunda subsp. juncifolia L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experimental Range; Lassen Forest 1798 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
  UCD92165  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2048 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  UCD92429  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-28 s.n. Lassen Bieber. 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
  CAS-BOT-BC236181  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49196 Lassen Elysian Valley NW of Janesville 1325 Comment
  UC1024681  Poa secunda subsp. secunda Leo Whitney 1934-7-10 2165 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen Nat'l Forest, Harvey Valley 1737 Comment
  UC1024839  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3217 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1567404  Poa secunda subsp. secunda G. Schoolcraft 1989-7-18 1975 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UC70959  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Comment
  UCD90488  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  SEINET10443291  Poa secunda var. secunda M. Church 2016-6-10 3 Lassen E of Hwy 395, N of Hallelujah Junction. 1442 Comment
  UCD91755  Poa wheeleri Leo Whitney 1935-6-13 3240 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC110774  Pogogyne floribunda Dean Wm. Taylor 2012-7-18 21276 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  NY963445  Polemonium micranthum A. Tiehm 1986-5-14 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill 1707 Comment
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  HSC95275  Polemonium occidentale Gordon Leppig 1998-7-12 949 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC532  Polyctenium fremontii 1944-6-30 Lassen Grasshopper Valley. 1624 Comment
  HSC63923  Polyctenium fremontii Teresa Prendusi, M. Meyer 1980-4-30 Lassen Along Hwy. 395, 3 mi. SE of Ravendale 1616 Comment
  RSA340001  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west on Hwy 395 1610 Comment
  SEINET229584  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Hwy 395. 1609 Comment
  CAS-BOT-BC167848  Polygala subspinosa H. D. Ripley; R. C. Barneby 1943-6-15 5760 Lassen E. of Viewland 1310 Comment
  UC726504  Polygala subspinosa A. A. Heller 1938-6-23 15213 Lassen stony wash s Secret Valley; ; S of Secret Valley, Shasta [=Lassen] Co. Comment
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Oct 19 2007
  UC1136918  Polygonum George A. Fischer, Irwin H. Johnson 1933-7-12 F 192 Lassen Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley 1694 Comment
  CAS-BOT-BC419769  Polygonum argyrocoleon G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC. Comment
  CAS-BOT-BC413910  Polygonum aviculare James Jokerst 1983-7-24 1877 Lassen Near Madeline Plains 1614 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
  POM104627  Polygonum bistortoides Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCD33604  Polygonum californicum Beecher Crampton 1970-6-26 8637 b Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CHSC60384  Polygonum douglasii subsp. douglasii Mary Ann Showers 1992-6-12 2528 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  CHSC60762  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1993-6-14 5518 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
  UC1567355  Polygonum douglasii subsp. majus G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC 1554 Comment
  CHSC84438  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  RSA0011553  Polygonum esotericum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46999 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  RSA128554  Polygonum hydropiper Peter H. Raven 1954-9-2 8115 Lassen Bed of St. Helena Creek at Mirabel Park, 4.8 miles S of Middletown Comment
  UC1603209  Polygonum polygaloides J. Guardino 1993-6-9 281 B Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  JEPS28647  Polygonum polygaloides subsp. confertiflorum George W. Gillett 1957-7-22 874 Lassen near s shore of Snag Lake, Lassen Volcanic National Park Snag Lake Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  POM203797  Polygonum sawatchense J. T. Howell 1934-7-9 12528 Lassen Harvey Valley. Comment
  CHSC110775  Polygonum sawatchense subsp. oblivium Dean Wm. Taylor 2012-7-18 21277 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  UC506934  Polygonum sawatchense subsp. oblivium George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 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
  HSC97193  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy. 36, 1/4 mi. SW of the Susan River, 8 air mi. SW of Susanville 1434 Comment
  CAS-BOT-BC420975  Polygonum spergulariiforme Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pitville [Pittville] 1219 Comment
  UCD100686  Polygonum spergulariiforme J. M. Tucker 1950-7-25 1976 Lassen 33 miles northwest of Susanville, on road from Pittville. Comment
  RSA129377  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen Near Red Rock. 1341 Comment
  RSA719889  Polypogon monspeliensis Michael A. Vincent, K. Levings 2006-7-29 12915 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  UCD91225  Polypogon monspeliensis A. A. Beetle 1941-6-28 2814 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. 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
  CHSC71386  Porterella carnosula V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9259 Lassen Moll Reservoir in Ash Valley southeast of Adin. 1615 Comment
  JEPS23859  Porterella carnosula Peter H. Raven with Otto T. Solbrig 1958-6-17 13294 Lassen along United States Highway 395, 4.8 mi s Madeline Comment
  UC1143018  Porterella carnosula August L. Hormay 1934-5-14 Lassen Little Harvey Valley; Lassen National Forest, Little Harvey Valley 1676 Comment
  JEPS108444  Porterella carnosula Lisa Schultheis 1995-6-27 229 -95 Lassen W side of Rt. 395, 3.5 mi S of Madeline. Comment
  SEINET10460844  Porterella carnosula Baker 1894-7-21 Baker s.n. Lassen Near Eagle Lake. 1524 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
  CHSC4838  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CAS-BOT-BC452093  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  CHSC117537  Potamogeton diversifolius Lowell Ahart; John Dittes 2017-7-13 21149 Lassen Southwest part of pond, 150 yares 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
  CHSC60933  Potamogeton diversifolius Vernon H. Oswald; Lowell Ahart 1993-7-8 5666 Lassen Pittville Rd. (Lassen 111, 36N01) 2.4 mi N of Hwy. 44, on the NE edge of Poison Lake. 1705 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
  CAS-BOT-BC267149  Potamogeton foliosus Wm. Anderson 1963-5-12 s.n. Lassen Highrock (between Wendel and Nevada line) Comment
  SEINET9336258  Potamogeton foliosus Unknown 2007-7-25 Lassen 6 mi S of Bieber in Big Valley. Robin Harbert's wild rice field. Weed. Common name: leafy pondweed. Comment
  CHSC65369  Potamogeton foliosus var. foliosus Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7219 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  UC1100078  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-29 8184 Lassen e end of Tule Lake Comment
  CAS-BOT-BC453914  Potamogeton pectinatus Verne Grant; Irving Schneider 1947-9-6 8380 Lassen North arm of Eagle Lake 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
  UCD113701  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  CAS-BOT-BC143111  Potentilla breweri M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CDA26098  Potentilla glandulosa T. C. Fuller 1963-7-15 10903 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC27741  Potentilla glandulosa subsp. ashlandica Cindy Prouty 1978-7-5 3 Lassen E shore of Mahogany L., S of Eagle L. Meadow. 2060 Comment
  CAS-BOT-BC141633  Potentilla gracilis var. elmeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49452 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  JEPS107940  Potentilla gracilis var. elmeri Lowell Ahart, John Dittes 2005-6-1 11854 Lassen Long Valley, on the west side of the poor dirt road, about 1/2 mile west of Scott Road, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CHSC1575  Potentilla gracilis var. fastigiata C. Palmiter 1946-6-24 Lassen Spaulding's, Eagle Lake. 1584 Comment
  CHSC99535  Potentilla gracilis var. fastigiata Lowell Ahart; John Dittes 2008-6-20 14954 Lassen In meadow, about 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA702453  Potentilla gracilis var. fastigiata L. P. Janeway 2004-6-26 8159 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  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
  CAS-BOT-BC158518  Potentilla millefolia John Thomas Howell 1934-7-6 12456 Lassen Harvey Valley Comment
  UC2027198  Potentilla millefolia Anthony Baniaga 2011-6-1 296 Lassen Lassen National Forest. Bogard Work Station helicopter landing area, west of RR tracks, N of road to Crater Lake. Pine Creek Valley quadrangle Comment
  UCD113957  Potentilla rivalis G. Schoolcraft 2000-6-13 2902 Lassen Susanville. Cold Spring Valley. 1645 Comment
  CHSC117197  Poterium sanguisorba Lowell Ahart; John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  SEINET10542397  Prunus andersonii Paul Gallian, David B. Dunn 1971-6-2 Gallian 486 Lassen 5 miles s of milford near honey lake on us hwy 395. Along roadside in grass, Artemesia tridentata assoc. Quercus, jeffrey pine on mountain range to w at ca The same altitude 1250 Comment
  JEPS27652  Prunus emarginata W. L. Jepson 1918-8-2 7788 Lassen Long Valley 1371 Comment
  UC1128502  Prunus emarginata A. Simontacchi 1940-6-4 799 Lassen 7.1 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1836 Comment
  CAS-BOT-BC154773  Prunus virginiana var. demissa John Thomas Howell 1974-7-8 50494 Lassen Susanville 1295 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
  UCD55293  Pseudoroegneria spicata Ellen Dean; Gary Schoolcraft 2006-5-16 3114 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  RSA123271  Pseudostellaria jamesiana L. R. Short, Wm Gansberg 1936-6-13 S 438 Lassen Burgess Springs Experiment Range. 1884 Comment
  SEINET5345382  Pseudotsuga menziesii var. menziesii D. A. Charlet, T. Charlet 1996-7-20 2300 Lassen Sierra Nevada; Diamond Mts, Upper East canyon (Milford Grade) 1770 Comment
  SEINET5345383  Pseudotsuga menziesii var. menziesii D. A. Charlet 1996-7-8 2286 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  RSA0011562  Psilocarphus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46990 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC112453  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18756 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS124657 Image available Psilocarphus brevissimus var. brevissimus Rechen 1964-7-1 79 Lassen 12 miles north of Susanville Hi 139. Comment
  CHSC4880  Psilocarphus elatior R. Carter 1967-6-27 560 Lassen Ca. 10 yds off N side of Rd. 1.75 mi W of Eagle Lake Biology Station. 1584 Comment
  UCD55279  Psilocarphus oregonus Ellen Dean 2006-5-15 3094 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  CAS-BOT-BC72539  Pteridium aquilinum John Thomas Howell; Gordon H. True 1973-7-31 50058 Lassen on road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  CHSC105259  Pterospora andromedea Lowell Ahart; John Dittes 2010-7-31 17007 Lassen On the sout side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  UC1562803  Pterospora andromedea Barbara Ertter 1987-7-25 7319 Lassen Hwy 44 ca 1 mi E of Shasta Co. line 1645 Comment
  UC773902  Pterospora andromedea L. R. Short and D. Gish 1936-7-15 S 488 Lassen Burgess Spring Experiment Range 1813 Comment
  CDA38860  Pterospora andromedea H. Wilkerson & W. F. Cruickshank Sep 1964 s.n. Lassen Hayden Hill. 0 Comment
  CHSC115612  Puccinellia distans Lowell Ahart; John Dittes 2015-7-14 20330 Lassen West side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  HSC63951  Puccinellia distans Teresa Prendusi 1980-7-9 1114 Lassen Horse Camp Spring about 39 mi. N of Susanville. 1707 Comment
  SEINET200160 Image available Puccinellia distans Malcolm A. Nobs, S. Galen Smith 1949-7-22 1070 Lassen Northeast shore of Eagle Lake. Comment
  CDA42960  Puccinellia lemmonii L. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. Comment
  CDA32668  Puccinellia nuttalliana M. D. Collins Jun 1923 Lassen Edge of Honey Lake 0 Comment
  CDA26233  Purshia tridentata S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC12423  Purshia tridentata Anne Linda Brisk 1969-6-20 8 Lassen 5.5 mi S of ELBS on Dean's Ridge Road. 1920 Comment
  CHSC25129  Purshia tridentata Paul Lyman 1970-5-2 29 Lassen Bald Mountain; Janesville. On south slope of Bald Mountain, 10 miles East of Susanville. Comment
  UCR17285  Purshia tridentata Frank C. Vasek 1975-7-11 750711- 36 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC147822  Purshia tridentata var. tridentata Margaret Williams; Steven Williams 1974-7-26 74 -L-19 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  RSA252505  Purshia tridentata var. tridentata Robert F. Thorne, C. W. Tilforth 1969-9-6 39253 Lassen Ca 14 miles SE of Milford along Long Valley Creek. 1311 Comment
  RSA60361  Purshia tridentata var. tridentata E. K. Balls 1950-5-9 15946 Lassen 6 miles S of Doyle, Hwy 395 1372 Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. Comment
  UC1924592  Purshia tridentata var. tridentata Debra Valov 2006-5-28 2006002 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1284 Comment
  UC764040  Purshia tridentata var. tridentata R. F. Hoover 1940-9-21 4605 Lassen 4 mi w Susanville Comment
  CAS-BOT-BC462754  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CAS-BOT-BC462757  Pyrola dentata John Thomas Howell; Gordon H. True 1973-7-31 50023 Lassen Sierra Nevada: on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  POM39973  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC1332443  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  CAS-BOT-BC362264  Pyrrocoma carthamoides var. cusickii G. S. 1984-7-11 1292 Lassen About 4 miles west of Madeline. 37-12-14 1706 Comment
  UC21043  Pyrrocoma racemosa var. paniculata J. Burtt Davy Jun 17 1897-Jun 24 1897 3380 Lassen Honey Lake Valley Comment
  CAS-BOT-BC105245  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles W of Susanville 1371 Comment
  CHSC5250  Quercus kelloggii P. Balch 1955-7-25 Lassen Eagle Lake. Roop Mt. Rd., 5 mi from Susanville. 1828 Comment
  POM106363  Quercus kelloggii Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCD46622  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles west of Susanville. 1371 Comment
  UCD46633  Quercus kelloggii John Thomas Howell; Gordon H. True 1973-5-12 49159 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UCD46729  Quercus kelloggii Verne Grant 1947-9-7 8400 Lassen Along Highway 395 west of Honey Lake, several miles south of Janesville, Lassen County, California. Comment
  CAS-BOT-BC380420  Ranunculus alismifolius var. hartwegii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49214 Lassen Elysian Valley northwest of Janesville Comment
  SEINET5338283  Ranunculus alismifolius var. hartwegii J. Young 1982-6-9 s.n. Lassen M.Meyers Ranch, Adin, Ca. 1372 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
  UC584357  Ranunculus andersonii G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2270 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville) Comment
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Apr 20 2009
  CAS-BOT-BC379207  Ranunculus aquatilis Louella Bass 1974-6-26 s.n. Lassen Elysian Valley Comment
  CHSC23755  Ranunculus aquatilis var. capillaceus M. S. Taylor 1974-7-10 282 Lassen In creek in meadow, ca. 1/2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  UC1537334  Ranunculus aquatilis var. capillaceus Gordon H. True Jr. 1936-6-21 515 Lassen Honey Lake Valley; in deeper sloughs 1219 Comment
  POM98935  Ranunculus aquatilis var. capillaceus Marcus E. Jones 1897-6-29 s.n. Lassen Susanville. 1311 Comment
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Jan 10 2016
  SEINET10536066  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1974-1 Taylor 282 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  NY493018  Ranunculus aquatilis var. diffusus P. H. Raven 1958-6-19 13256 Lassen In a pond along United States Highway 395, 7.1 miles west of Standish Comment
  CDA24319  Ranunculus cymbalaria var. saximontanus T. C. Fuller 1980-8-6 20317 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  CHSC75526  Ranunculus cymbalaria var. saximontanus Vernon H. Oswald; Lowell Ahart 1999-6-9 9757 Lassen Northeast of Susanville and 4.1 mi south of Biscar Wildlife Management Area on BLM 26030 at the water crossing on Secret Creek. 1347 Comment
  RSA523410  Ranunculus cymbalaria var. saximontanus Rodney H. True 1936-6-26 544 Lassen Honey Lake Valley- Willow Creek Valley Road. 1524 Comment
  CHSC55400  Ranunculus glaberrimus Charlie Crannell 1991-4-21 16 Lassen South end of Lassen County youth camp property bordering Eagle Lake Field Station; 200 ft from Eagle Lake. 1560 Comment
  UC1523766  Ranunculus occidentalis Gary Schoolcraft 1981-5-5 371 Lassen s Adin (e of Hwy 139) 1341 Comment
  UC1924564  Ranunculus occidentalis Debra Valov 2006-5-30 2006036 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CHSC91186  Ranunculus occidentalis var. occidentalis Lowell Ahart; John Dittes 2005-6-1 11857 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  RSA74352  Ranunculus occidentalis var. ultramontanus Milo S. Baker 1952-5-23 12409 Lassen Along Hwy 36, betw Pluster and Fredownyer Pass. Comment
  UCD97132  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen Susanville, county fairgrounds. Comment
  CDA7609  Ratibida columnifera G. D. Barbe 1974-8-2 1939 Lassen At the north end of the Glenn-Eagle airstrip, southwest corner of Eagle Lake, 0.8 mile north of Eagle Lake Resort. 0 Comment
  UCD135418  Ratibida columnifera G. Douglas Barbe 1974-8-20 1939 Lassen north end of the Glenn-Eagle airstrip, southwest corner of Eagle Lake, 0.8 mile north of Eagle Lake Resot. Comment
  UC870780  Rhamnus californica C. L. Hitchcock 1940-5-26 6619 Lassen ca 12 mi n Fall River Mills; Fall River 1371 Comment
  SEINET5845254  Ribes C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  UC1127635  Ribes cereum A. Simontacchi 1940-6-15 882 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET10482925  Ribes cereum Mary Susan Taylor 1974-5-4 Taylor 219 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
  CHSC84861  Ribes cereum var. cereum L. P. Janeway; B. Castro 2003-10-5 8003 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  JEPS94487 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1997-5-27 8515 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir on Forest Route 38N04 1682 Comment
  UC75460  Ribes inerme var. inerme Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  RSA31677  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  RSA0026922  Ribes roezlii Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles below Eagle Lake. 1524 Comment
  SEINET12216573  Ribes roezlii Unknown 1972-1 286 Lassen 1 mi S of Five Points on Dean's Ridge Rd going to Dean's Meadow Comment
  CAS-BOT-BC186149  Ribes roezlii var. roezlii George W. Gillett 1957-7-26 917 Lassen Butte Lake 1844 Comment
  CHSC12424  Ribes velutinum Anne Linda Brisk 1969-6-19 1 Lassen 1/4 mi NE of ELBS. 1554 Comment
  JEPS87425  Ribes velutinum Vernon H. Oswald and Lowell Ahart 1993-6-14 5547 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake 1566 Comment
  SEINET10482959  Ribes velutinum Mary Susan Taylor 1974-1 Taylor 288 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC363012  Rigiopappus leptocladus Doris Kildale Gillespie 1930-5-12 9341 Lassen 2 miles north of Susanville on road to Alturas Comment
  CHSC66378  Rigiopappus leptocladus Vernon H. Oswald; Lowell Ahart 1996-6-17 7795 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
  SEINET2054605 Image available Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen South side of Shaffer Mt., 3.4 road miles North of the Wendel road on highway 395 from Susanville to Alturas, west of highway. 1386 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
  CAS-BOT-BC74533  Rorippa curvisiliqua Al Simontacchi 1940-6-4 806 Lassen Lassen Forest. 14.8 miles west of Harvey Mountain Lookout. 1783 Comment
  JEPS28472  Rorippa curvisiliqua George W. Gillett 1957-7-21 862 Lassen Juniper Lake- Cameron Meadow trail (300 yards n of trail summit, Lassen Volcanic National Park); Lassen Volcanic National Park 2118 Comment
  CHSC60341  Rorippa curvisiliqua var. orientalis Mary Ann Showers 1992-6-12 2525 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  CHSC25060  Rorippa nasturtium-aquaticum L. B. Barlow 1967-6-24 40 Lassen Meadow 4 mi. east of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 Comment
  UCR17283  Rosa californica Frank C. Vasek 1975-7-11 750711- 22 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC148389  Rubus leucodermis Louella Bass 1973-5-29 EV- 53 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  NY324109  Rumex lacustris M. S. Baker 1894-1 s.n. Lassen Silver Lake [according to annotation by Rech. f.] Comment
  CHSC113068  Rumex salicifolius subsp. triangulivalvis Lowell Ahart; John Dittes 2013-7-22 18867 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1036081  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5154 Lassen nw end Eagle Lake (Sam Webb's Hunting Cabins) Comment
  UC452565  Rumex salicifolius var. lacustris Milo S. Baker Lassen near Eagle Lake Comment
  CHSC65318  Rumex salicifolius var. salicifolius Vernon H. Oswald; Lowell Ahart 1995-8-14 7188 Lassen Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy.395, N of Susanville. 1645 Comment
  UC452568  Rumex salicifolius var. salicifolius Franklin P. Nutting Lassen n side Dixie Mts. Comment
  UC748281  Rumex salicifolius var. triangulivalvis Annie M. Alexander and Louise Kellogg 1946-8-11 5153 Lassen nw end Grasshopper Valley Comment
  RSA0105590  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS74706  Rumex venosus Wayne Roderick 1969-5-24 Lassen along Hwy 395 near Janesville Comment
  CHSC5006  Sagittaria cuneata L. G. Bennett 1968-7-8 124 Lassen Murrers Meadow, north end, near Eagle Lake. 1493 Comment
  CHSC66737  Sagittaria cuneata Vernon H. Oswald; Lowell Ahart 1996-8-1 8107 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  UC1051438  Sagittaria cuneata Herbert L. Mason 1955-8-13 14647 a Lassen Willow Creek Valley Comment
  CAS-BOT-BC445672  Sagittaria cuneata Jean L. Pawek 1964-8-16 604 Lassen Lake Almanor near Chester 1371 Comment
  RSA0011560  Sagittaria cuneata Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46992 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC132697  Salix John Thomas Howell 1976-7-20 52017 Lassen Bottom flats along Willard Creek near its confluene with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CHSC58514  Salix boothii Vernon H. Oswald 1992-7-3 5048 Lassen Trail from Juniper L. to Snag L., on the W edge of Cameron Meadow. 1950 Comment
  CHSC96714  Salix eastwoodiae Gordon Leppig; J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  UC481924  Salix exigua var. hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen at edge of Pit River McArthur 960 Comment
  CHSC93555  Salix jepsonii Lowell Ahart; John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  JEPS107968  Salix jepsonii Lowell Ahart, John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  RSA746513  Salix lasiolepis K. M. Meyer, A. Townesmith 2007-7-19 138 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  JEPS87437  Salix lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-3 5489 Lassen n. of Hwy. 44 between Poison Lake and Susanville (Bridge Creek Spring Rd. (Lassen 112, Forest 31N06) at Bridge Creek, s. edge of rd.); betw Poison Lake and Susanville, Bridge Creek 1746 Comment
  UC433175  Salix lemmonii Franklin P. Nutting 1900-7-28 Lassen Bridge Creek Comment
  CAS-BOT-BC126131  Salix scouleriana John Thomas Howell; Gordon H. True 1973-7-31 50041 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UCR67403  Salsola gobicola George K. Helmkamp 1990-9-23 B- 16 -90 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CHSC71874  Salsola tragus Vernon H. Oswald; Lowell Ahart 1998-9-8 9582 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  SEINET13947383 Image available Salvia dorrii Arthur Cronquist, Arthur H. Holmgren 1959-1 8462 Lassen 50 mi SE of Susanville Comment
  CHSC12422  Sambucus mexicana Anne Linda Brisk 1969-6-26 28 Lassen 7.2 mi SW of ELBS on Road 4.25. 1584 Comment
  CHSC26166  Sambucus mexicana Detzer; M. Sacks 1977-7-15 5 Lassen Ca. 3.5 mi SE of Milford, 1 mi SE of Laufman Rngr. Stn. on unimproved USFS road. 1420 Comment
  UC1136751  Sambucus mexicana L. R. Short and J. Warren 1936-7-28 S- 490 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  JEPS88210  Sanguisorba annua Vernon H. Oswald and Lowell Ahart 1996-6-17 7787 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at the Hwy 36 bridge spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  POM161480  Sanicula tuberosa Franklin P. Nutting 1894-7-9 s.n. Lassen Pine Creek 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
  CDA19211  Sarcobatus vermiculatus D. Kratville 2001-6-21 s.n. Lassen Modoc Plateau; Outside of Susanville. 0 Comment
  CHSC30601  Sarcobatus vermiculatus L. J. Dawson 1975-7-7 44 Lassen Ca. 500 yd e of Horselake. 1584 Comment
  CHSC64783  Sarcobatus vermiculatus Vernon H. Oswald 1995-5-24 6775 Lassen Modoc Plateau. Wendel Rd. (Lassen 320), 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel). 1219 Comment
  CHSC6239  Sarcodes sanguinea Sam Webb 1946-6-8 Lassen Roop Mountain, Eagle Lake. 2133 Comment
  CAS-BOT-BC466320  Sarcodes sanguinea R. Carter 1967-6-22 536 Lassen 1/4 mi S of Corners on Peans Ridge Rd., on way to Mahogany Lake 1950 Comment
  HSC17991  Sarcodes sanguinea M. T. Milligan 1964-7-17 146 Lassen 3.5 mi. W of Eagle Lake Rd. on Marrill Flat Rd. 1677 Comment
  CDA25442  Saxifraga oregana Gordon Leppig 1998-7-12 939 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  RSA59813  Saxifraga oregana E. K. Balls 1950-5-19 14771 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 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
  CAS-BOT-BC383111  Schoenoplectus acutus var. occidentalis Andrew Townesmith; Karen M. Meyer 2007-7-22 842 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  CHSC114035  Schoenoplectus acutus var. occidentalis Richard R. Halse 2012-8-20 8661 Lassen Along State Hwy. 139 at Eagle Lake, ca. 26.6 miles north of Susanville. 1558 Comment
  CHSC66415  Scirpus microcarpus Vernon H. Oswald; Lowell Ahart 1996-6-17 7819 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. In a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  RSA91471  Scirpus microcarpus F. W. Peirson 1926-6-22 6825 Lassen Small meadow above Hot Spring, Drakesbad, Lassen National Park Comment
  UC2198  Scirpus pungens J. Burtt Davy Jun 17 1897-Jun 24 1897 3286 Lassen sloughs Susan River (Honey Lake Valley); , Honey Lake Valley Comment
  UC573269  Scirpus pungens H. S. Yates 1936-8-11 6062 Lassen near Red Rock 1341 Comment
  SEINET6727388  Sclerolinon digynum J. T. Howell, G. H. True., Jr. 1973-6-28 49490 Lassen Sierra Nevada, Elysian Valley 1326 Comment
  JEPS88199  Scribneria bolanderi Vernon H. Oswald and Lowell Ahart 1996-6-17 7804 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side of trail between Devils Corral Trailhead and the 6.0 mi. post); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  JEPS84931  Scrophularia desertorum Barbara Ertter with Gary Schoolcraft 1987-6-16 7191 Lassen ne side Honey lake (s side of Hot Springs VABM); Skeedaddle Mts 2286 Comment
  SD61030  Scrophularia lanceolata Darley F. Howe 1962-8-2 3923 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc Natl. Forest 1829 Comment
  NY415691  Scutellaria holmgreniorum N. H. Holmgren 1980-7-5 9524 Lassen 21.9 km (13.6 mi.) from U.S. Hwy. 395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale 1580 Comment
  CAS-BOT-BC214260  Scutellaria nana Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8591 Lassen Flats on the northwest side of Shaffer Mountain, 7.5 air miles north-northwest of Litchfield 1371 Comment
  CAS-BOT-BC214263  Scutellaria nana H. D. Ripley; R. C. Barneby 1943-6-15 5764 Lassen Smoke Creek, N-E of Viewland 1341 Comment
  RSA719468  Scutellaria nana L. P. Janeway 2005-4-7 84614 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 534 Comment
  UC1037195  Scutellaria nana Leo Whitney 1934-7-10 1513 Lassen 14 mi w of Eagle Lake (near Harvey Valley); Lassen National Forest 1737 Comment
  UC1549236  Scutellaria nana Richard Olmstead 1984-6-27 581 Lassen turnoff 14 mi s of Ravendale (10.3 mi e of US 395); Rye Patch Canyon Road 1603 Comment
  UC1609093  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-7-8 5653 Lassen on se edge of Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi n of Hwy 44) 1709 Comment
  UC1609176  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-6-28 5595 Lassen e of Poison Lake (Harvey Valley Rd. (33N02), 2.0 mi n of Hwy 44, between Grays Valley and Harvey Valley); Harvey Valley Rd. 1734 Comment
  CDA2409  Secale cereale T. C. Fuller 1969-5-22 18481 Lassen Northeast corner of Rair Drive & Main Street, Susanville. 0 Comment
  CDA28589  Secale cereale D. Haskelle 2000-2-7 s.n. Lassen Doyle. 0 Comment
  RSA483309  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi south of Ravendale, lower slopes Observation Peak Comment
  SEINET4891272  Secale cereale M. J. Williams 1974-7-26 74 -I-38 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  UCD92548  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak. Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  SEINET10517203  Secale cereale Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 887 Lassen Collected 3 mi N of Milford. On Hwy 395 at Honey Lake Campgrounds. Comment
  CAS-BOT-BC363324  Senecio aronicoides Alice Eastwood 1912-8-22 1819 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  SEINET10801294  Senecio aronicoides Katherine L. Morris, David B. Dunn; Melvin L. Conrad 1973-5-25 Morris 230 Lassen Collected 7.6 mi. NW of Jct. of Hwy. 36 & 44 on Hwy. 44, in an area of yellow pine and incense cedar; very moist area. Comment
  RSA516346  Senecio canus Barbara Ertter, Gary Schoolcraft 1987-6-16 7194 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  CHSC23475  Senecio clarkianus Wayne O. Baum 1971-7-14 71 -61 Lassen N. slope of Gallatin Peak. 2011 Comment
  CHSC114299  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 Lassen South of Adin; Hwy. 139 at Milepost 58. On both sides of the road. Comment
  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
  OBI76980  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen Natl Forest. Southern McCoy Flat. Spalding Tract quad T33N R10E sec 32 SE of SW 1700 Comment
  CHSC7651  Senecio hydrophilus Beverley J. Wise 1969-5-9 28 Lassen 10.3 mi. east of Susanville on Forest Serv. 8246 off Hwy 36. 1554 Comment
  UC1583967  Senecio hydrophilus G. Schoolcraft 1990-8-14 2122 Lassen between M.P. 56 and 57 on Highway 139 s Adin 1432 Comment
  HSC42542  Senecio hydrophilus Barbara Kelly 1977-8-9 564 Lassen 15 miles east of Madeline on a dirt road from Adin Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC363810  Senecio integerrimus var. exaltatus John Thomas Howell 1934-6-14 12158 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UC1137289  Senecio integerrimus var. exaltatus K. E. Bradshaw 1939-5-27 239 Lassen Black Mt. Experimental Forest, Plot 39-1 Lassen Forest 1767 Comment
  UC1776693  Senecio integerrimus var. exaltatus G. Schoolcraft 1994-7-7 2368 Lassen About 1 mile west of Boot Lake 219 Comment
  CDA8643  Senecio integerrimus var. exaltatus G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2800 Lassen 2.0 miles (3.2 km) north of Grasshopper Road on Westside Road. Dry Valley Ridge, west side of Madeline Plains. Comment
  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
  JEPS79212  Senecio serra var. serra L. R. Heckard with R. C. Bacigalupi 1980-6-12 5253 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  CDA36706  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen Along a bench on the south slope of the Rush Creek Drainage, 0.3 km south of the Smoke Creek Ranch Road, 2 km west of the stateline. 0 Comment
  CAS-BOT-BC213324  Sidalcea G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  CAS-BOT-BC205765  Sidalcea oregana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CHSC83236  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). Streambed. 1950 Comment
  UCD18967  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). 1950 Comment
  CAS-BOT-BC205782  Sidalcea oregana Alice Eastwood; John Thomas Howell 1940-6-11 7999 Lassen Bieber Comment
  UC619263  Sidalcea oregana subsp. oregana J. and H. W. Grinnell 1938-7-13 1099 Lassen near Ravensdale; near Ravensdale 1554 Comment
  POM260877  Sidalcea oregana subsp. oregana Alice Eastwood, J. T. Howell 1940-6-11 7982 Lassen Big Valley Mountains. Comment
  CHSC66729  Sidalcea oregana subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-8-1 8114 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
  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
  UC1523760  Silene bernardina Gary Schoolcraft 1982-6-23 727 Lassen Ft. Sage Mts. 1828 Comment
  HSC103769  Silene menziesii M. R. Mesler, Carol Wilson 2013-7-16 1626 Lassen Forest service road 31N25 on north edge of impoundment on Pine Creek 1930 Comment
  SJSU5887  Silene menziesii H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  RSA722689  Silene menziesii subsp. menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  CHSC83192  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). Meadow. 1700 Comment
  RSA666396  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  CAS-BOT-BC389549  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  CDA38565  Sium F. A. Taylor 1939-7-5 s.n. Lassen Bieber. 0 Comment
  UC21381  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  CDA38568  Sium suave T. C. Fuller 1959-7-7 4732 Lassen Highway 395, 7.5 miles east of Susanville. 0 Comment
  JEPS117479  Solanum sarrachoides Lowell Ahart, John Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley 1276 Comment
  NY820339  Solanum triflorum G. Schoolcraft 1987-9-1 1774 Lassen Along Ash Valley road in Ash Valley 1548 Comment
  HSC95262  Sparganium emersum Gordon Leppig, J. Cromwell 1997-7-27 627 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CAS-BOT-BC213212  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Transplanted to the garden of Edward and Luella Bass in Standish, from Stacy, east of the south end of Honey Lake 1219 Comment
  CDA8825  Sphaeromeria potentilloides var. potentilloides Gary Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 0 Comment
  RSA0008983  Sphaeromeria potentilloides var. potentilloides Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1567385  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 1989-5-3 1865 Lassen s Karlo (n end Secret Valley); n end Secret Valley 1341 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
  POM82495  Sphenosciadium capitellatum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC149628  Spiraea douglasii Ray Hanson 1954-8-23 s.n. Lassen Lassen Park, near Jakey Lake 2112 Comment
  RSA18166  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  SEINET10737171  Spiraea douglasii Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 840 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  HSC95180  Spiranthes porrifolia Gordon Leppig, J. Cromwell 1997-7-27 603 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC773921  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spring Experiment Range Lassen Forest 1795 Comment
  HSC26818  Stanleya elata D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19286 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS95038  Stellaria crispa Vernon Oswald and Lowell Ahart 1997-6-24 8610 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain along Forest Road 29N43, 5.4 mi e of Gold Run road (29N10)); Diamond Mountain, Forest Road 29N43 1889 Comment
  POM101721  Stellaria longipes F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  HSC95299  Stellaria longipes subsp. longipes Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 544 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SJSU8510  Stellaria longipes subsp. longipes J. W. Tilden 1960-6-27 1516 Lassen by Moonlight Rd c. 5 mi E of Westwood 1524 Comment
  CHSC4946  Stellaria longipes var. longipes R. Carter 1967-6-23 550 Lassen In meadow, 25 yds w of dam in Murrer's Meadow. 1584 Comment
  CHSC76747  Stellaria longipes var. longipes L. P. Janeway 1999-9-5 6577 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. On south edge of pond. 1900 Comment
  JEPS114768  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2008-6-20 14956 Lassen About 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC68848  Stenotus acaulis Vernon Oswald; Lowell Ahart 1997-6-24 8630 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
  JEPS94472  Stenotus acaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8507 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat, betw road and creek paralleling rd to north); Forest Route 38N04 1560 Comment
  JEPS109943  Stenotus stenophyllus Dean W. Taylor 2004-5-12 19065 Lassen Willow Creek, along Forest Road 38N04 0.4 miles North of Highway 139 1584 Comment
  CAS-BOT-BC375307  Stephanomeria exigua subsp. coronaria John Thomas Howell 1934-6-10 11847 Lassen 4 miles south of Omira Comment
  CAS-BOT-BC375447  Stephanomeria exigua subsp. exigua R. F. Thorne; C. W. Tilforth 1969-9-6 39261 Lassen On roadside c. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake) 1280 Comment
  CHSC23504  Stephanomeria tenuifolia Wayne O. Baum 1971-7-19 71 -76 Lassen E. slope of Gallatin Peak. 2072 Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  CHSC118490  Stipa comata var. comata Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. About 140 yards souteast of central entrance to Sandy Beach cinder pits and 1.9 air miles north-northwest of Spalding marina. UTM 687661 x 4506890. 1563 Comment
  JEPS126469  Stipa thurberiana Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -039 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  SEINET10443621  Stipa thurberiana M. Church 2016-6-21 5 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1507 Comment
  SEINET10523055  Stipa thurberiana Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2873 Lassen Hallelujah Jct. intersection of US Hwy 395 & Calif. Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  CHSC57125  Streptanthus Mary Meyer 1980-7-21 Lassen Near sharp bend in road on way to Fire Lookout. 2316 Comment
  SEINET10940334  Streptanthus cordatus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2606 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon juniper pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  UCD149959  Stuckenia striata William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  CHSC63602  Subularia aquatica var. americana Vernon H. Oswald; John Ost, Mary Lou Mini 1994-8-6 6447 Lassen Caribou Wilderness along the west loop of the trail from the Hay Meadow to Long Lake. On the margin of a pond. 2065 Comment
  CHSC99142  Swertia albicaulis var. albicaulis Lowell Ahart; John Dittes 2008-6-19 14881 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC28680  Symphoricarpos mollis Mrs. R. M. Austin and Bruce Jun 1898 2337 Lassen high mountains Comment