Search Results — 2000 specimen records retrieved (1605 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
  CHSC13792  Abies concolor Anne Linda Brisk 1969-7-2 33 Lassen Growing along the shore of Mohogany Lake. Comment
  JEPS94537  Acer glabrum var. torreyi Vernon Oswald and Lowell Ahart 1997-6-24 8607 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); Diamond Mountain, Forest Road 29N43 1889 Comment
  CAS-BOT-BC334175  Acer negundo var. californicum J. T. Howell 1975-7-23 s.n. Lassen Susanville, in park 1295 Comment
  SEINET10473515  Achillea lanulosa Mary Susan Taylor 1974-1 Taylor 286 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC12493  Achillea millefolium Carol Weld 1969-6-20 20 Lassen Dean's Meadow. 1950 Comment
  CHSC30558  Achillea millefolium Sori H Shad 1970-6-26 13 Lassen Dean's Meadow. 1524 Comment
  CHSC5191  Achillea millefolium J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek, Eagle Lake, Lassen Co., California. 1580 Comment
  UC1136758  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley 1700 Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  UCD50374  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  SEINET249775 Image available Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UC40031  Achnatherum lemmonii M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  RSA129475  Achnatherum lemmonii var. lemmonii G. A. Fischer 1933-7-14 252 Lassen Lassen Forest 1768 Comment
  CAS-BOT-BC216451  Achnatherum occidentale subsp. californicum John Thomas Howell 1969-8-7 45884 Lassen Butte Lake, Lassen Park Comment
  CHSC109530  Achnatherum occidentale subsp. californicum B. Castro; L. P. Janeway 2003-10-5 1459 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail between Cone Lake and Triangle Lake, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  UC1143047  Achnatherum occidentale subsp. californicum L. R. Short and W. Gansberg 1936-6-2 S- 3666 Lassen Burgess Spring Experimental Range Lassen National Forest 1858 Comment
  UC506985  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F- 215 Lassen Lassen Forest 1706 Comment
  UC584331  Achnatherum occidentale subsp. occidentale G. L. Stebbins Jr. 1937-7-11 2324 Lassen 1 mi below summit; Black Mt. 1940 Comment
  CAS-BOT-BC218610  Achnatherum occidentale subsp. pubescens John Thomas Howell 1976-7-19 51981 Lassen Gold Run Creek southwest of Susanville, Sierra Nevada 1386 Comment
  CAS-BOT-BC218614  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49191 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  UCD32668  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-6 2069 Lassen Lassen County, 1 mile east of Johnstonville, along US highway 1395. 1219 Comment
  UCD51209  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2051 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  SEINET201660 Image available Achnatherum speciosum A. Cronquist, AH Holmgren 1992-6-17 8467 Lassen 50 mi SE of Susanville 1372 Comment
  RSA700231  Achnatherum thurberianum L. P. Janeway 2001-6-20 7205 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  SEINET229581 Image available Achnatherum thurberianum Gary Schoolcraft 1982-6-22 722 Lassen North end of Fort Sage Mountains Comment
  SEINET235273 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC584327  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2355 Lassen along highway from McArthur to Bieber; Big Valley Mt. 1100 Comment
  UCD32656  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51423  Achnatherum thurberianum Beecher Crampton 1964-6-27 7091 Lassen 21 miles north of Susanville, north end of Eagle Lake, B.L.M. Bucks Bay allotment. 1676 Comment
  UCD51444  Achnatherum thurberianum R. Tofsrud 1947-7-1 223 Lassen Between Ravendale and Thermos. Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  JEPS127283  Acmispon americanus var. americanus Lowell Ahart, John Dittes 2016-7-13 21119 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC30612  Acmispon denticulatus L. Maslin 1975-7-1 12 Lassen On the road to Lower Dry L. from Eagle Lake Field Station, 2 mi. ELFS. 1524 Comment
  CAS-BOT-BC412863  Aconogonon davisiae Ray Hanson 1954-8-23 s.n. Lassen Lassen Park: near Jakey Lake 2112 Comment
  CDA3517  Adonis aestivalis T. C. Fuller 1963-6-1 10641 Lassen East of Willow Springs Campground, in northeast Lassen Co., ca 15 miles southeast of Pittville. 0 Comment
  CAS-BOT-BC383114  Agastache parvifolia Andrew Townesmith; Karen M. Meyer 2007-7-22 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44 1971 Comment
  CHSC65107  Agastache parvifolia Vernon H. Oswald 1995-7-24 7132 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  CHSC67060  Agastache parvifolia Willis Ball 1969-6-25 27 Lassen Found in Upper Murrer's Meadow. 1584 Comment
  HSC63922  Agastache parvifolia Teresa Prendusi 1980-7-1 Lassen McCoy Flat, 4 mi. W of N tip of Eagle Lake- along side of road. 1646 Comment
  UCR73167  Agoseris glauca G. L. Webster 1989-5-13 7704 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  CHSC60711  Agoseris glauca var. glauca Vernon H. Oswald; Lowell Ahart 1993-6-14 5530 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518,33N89). 1566 Comment
  CHSC101022  Agoseris glauca var. laciniata John Dittes 2008-5-22 1539 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace on northeast side of Willow Creek. 483 Comment
  JEPS100463  Agoseris grandiflora Dean W. Taylor 2001-6-28 17818 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  UC1924573  Agoseris heterophylla var. heterophylla Debra Valov 2006-5-29 2006023 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  CAS-BOT-BC13231  Agoseris monticola G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  RSA299167  Agropyron desertorum J. T. Howell 1974-7-8 50468 Lassen Susanville 1296 Comment
  UC1130661  Agrostis alba H. S. Yates 1936-8-11 6060 Lassen near Red Rock; Susanville Quad. Comment
  UC1142988  Agrostis exarata A. L. Hormay 1941-6-25 21 Lassen Burgess Spring Lassen Forest 1676 Comment
  UCD52428  Agrostis exarata L. Whitney 1933-8-2 2152 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  UC1483834  Agrostis pallens G. Schoolcraft 1980-7-28 330 Lassen rocky meadow area e Tule Mountain (s of Blue Lake) 2042 Comment
  CAS-BOT-BC138801  Agrostis scabra John Thomas Howell 1959-9-23 34882 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  CAS-BOT-BC138803  Agrostis scabra John Thomas Howell; Gordon H. True 1973-8-1 50178 Lassen Sierra Nevada. Gold Run Creek Road south of Susanville, Diamond Range. 1584 Comment
  UC1024796  Agrostis scabra Leo Whitney 1933-8-4 2228 Lassen ca 10 mi nw Eagle Lake, n end; Lassen National Forest, Sheepshead 1889 Comment
  SEINET10510581  Agrostis scabra R. Ondricek 1978-8-4 Ondricek 114 Lassen Near edge of Eagle Lake along grassy shoreline. T32N, R11E, se tip of Sec. 19, Antelope Mtn. Quadrangle, 1554 Comment
  CAS-BOT-BC246539  Agrostis stolonifera Leland S. Smith 1919-8-10 1132 Lassen Modoc National Forest, Ash Valley - Templeton's Meadow 1463 Comment
  SBBG115824  Agrostis variabilis J. T. Howell, G. H. True 1973-8-1 50234 Lassen Diamond Range, S of Susanville Comment
  SEINET7594432 Image available Agrostis variabilis George W. Gillett 1957-1 927 Lassen Lassen Volcanic National Park, Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake. Dry wash 100 yards above trail junction. 1859 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
  JEPS121269  Alisma lanceolatum Lowell Ahart 2013-7-22 18841 Lassen W margin of duck field, about 80 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC985649  Alisma plantago-aquatica Verne Grant and Irving Schneider 1947-9-6 8394 Lassen near Wendel (w of Fleming Ranch Headquarters) Comment
  CHSC117531  Alisma triviale Lowell Ahart; John Dittes 2016-7-13 21137 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
  SEINET8193719  Allium M. J. Williams 1969-6-14 s.n. Lassen Ravendale. 1615 Comment
  UC1776688  Allium acuminatum G. Schoolcraft 1993-6-29 2307 Lassen Ash Valley S of T intersection 1557 Comment
  CAS-BOT-BC459568  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen 2 miles east of Fredonyer Summit on Highway #36, in the Arid Transition Life Zone. Comment
  CAS-BOT-BC459570  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen Along Skedaddle Ranch Road near stateline, Susanville 1584 Comment
  UC119964  Allium amplectens T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  RSA367043  Allium amplectens Anstruther Davidson s.n. Lassen [No locality information provided] Comment
  CHSC7663  Allium anceps Beverley J. Wise 1969-5-4 140 Lassen 23.4 mi. east of Susanville on Hwy 395. 1615 Comment
  SD6424  Allium anceps Mrs. R. M. Austin 1879-1 Lassen No further location information given on label. Comment
  UC1133790  Allium campanulatum A. Simontacchi 1940-7-1 935 Lassen 2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC470924  Allium lemmonii D. B. Dunn; B. J. Cox 1971-6-2 17786 Lassen 6 miles north of Hallelujah Junction on U.S. Hwy 395 1402 Comment
  SEINET10532723  Allium lemmonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17786 Lassen 6 miles n of hallelujah jct. On u.s. Hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge & in sandy wash 1402 Comment
  JEPS103209  Allium parvum G. Schoolcraft 1993-4-27 2256 Lassen Ash Valley RNA between Adin and Madeline, CA 1554 Comment
  UCD138589  Allium parvum Geo. C. Wood 1940-4-25 s.n. Lassen Coffin Ranch near Susanville. Comment
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  CAS-BOT-BC474073  Allium platycaule H. D. Ripley; R. C. Barneby 1943-6-14 5733 Lassen Fredonyer Pass 1676 Comment
  CAS-BOT-BC332746  Alopecurus R. F. Thorne; Larry E. DeBuhr 1975-8-22 46987 Lassen Along Hwy 395 ca 6 miles N of Madeline and 4.5 miles S of Modoc county line 1615 Comment
  CHSC65366  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1995-8-14 7194 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittant stream, N of Susanville. 1676 Comment
  HSC22949  Alopecurus aequalis John Pratt 1970-6-21 35 Lassen 1707 Comment
  SEINET7295647 Image available Alopecurus aequalis A. A. Beetle 1941-1 2795 Lassen 10 miles west of Chester, rte 36 Comment
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  RSA772750  Alopecurus aequalis var. aequalis R. F. Thorne, Larry E. DeBuhr 1975-8-22 47211 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC112469  Alopecurus carolinianus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18731 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CDA43006  Alopecurus geniculatus L. Ahart, John Dittes 2008-6-2 14960 Lassen About 300 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. Comment
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Oct 5 2019
  JEPS114770  Alopecurus geniculatus Lowell Ahart, John Dittes 2008-6-20 14960 Lassen About 300 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
  UCD55918  Alopecurus saccatus P. B. Kennedy 1927-6-13 s.n. Lassen Pit River. Comment
  CHSC63387  Alyssum desertorum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6310 Lassen Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. On the edge of the road. 1767 Comment
  CHSC68738  Alyssum minus subsp. micranthum Vernon H. Oswald; Lowell Ahart 1997-5-27 8496 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of a creek paralleling the road. 1546 Comment
  CHSC106172  Amaranthus blitoides Lowell Ahart; John Dittes 2010-8-30 17090 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  CHSC116090  Amaranthus californicus Lowell Ahart; John Dittes 2015-7-13 20317 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS41028  Ambrosia acanthicarpa W. L. Jepson 1939-8-11 19379 Lassen Milford 1280 Comment
  SJSU13939  Ambrosia acanthicarpa N. A. Hopkins 1986-8-28 1378 Lassen by County Road 33 (Scott Road), lower Long Valley, N of Highway 70 & E of Beckwourth Pass Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  POM253370  Amelanchier pallida A. A. Heller 1938-6-4 15144 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  UCR139398  Amelanchier utahensis P. A. Munz 1947-5-20 11886 Lassen Eastern Sierra Nevada Mtns., Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  CHSC76307  Amphiscirpus nevadensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8228 Lassen Along a small slough, on the south side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  SEINET9183301  Amphiscirpus nevadensis R. R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CHSC91309  Amsinckia menziesii Lowell Ahart; John Dittes 2005-6-1 11899 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
  SEINET12492784  Amsinckia tessellata F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  SEINET10939652  Amsinckia tessellata Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2574 Lassen 3 mi S of Hallelujah Jct, on US Hwy 395, Jct of US 395 & CA 70; along roadside and in Artemesia-grassland field. Comment
  UCD72518  Amsinckia tessellata Joe DiTomaso 2008-5-15 s. n. Lassen Modoc Plateau, just inside California (from Nevada) on Smoke Creek Road near Ravendale. Comment
  CAS-BOT-BC45258  Ancistrocarphus filagineus H. D. Ripley; R. C. Barneby 1944-5-30 5862 Lassen North of Viewland 137 Comment
  CHSC12433  Antennaria Robert Severin 1969-6-26 22 Lassen Papoose Meadow, 4 mi s of E.L.B.S.; 1/4 mi n of Cow Camp. 1630 Comment
  CAS-BOT-BC63953  Antennaria argentea Clare B. Hardham 1969-8-28 17453 C. Lassen West of Janesville Comment
  CHSC23527  Antennaria argentea Wayne O. Baum 1971-7-12 71 -54 Lassen E. slope of Gallatin Peak. 1950 Comment
  UC1125575  Antennaria argentea A. Simontacchi 1940-6-23 886 Lassen 3.2 mi sw Schoonamaker Lake; Halls Flat Quad. 1920 Comment
  UC891493  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen ca 12 mi n of, at lava beds Fall River Mills (Shasta Co.); Fall River 1371 Comment
  CAS-BOT-BC63875  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1371 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
  CHSC60808  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5584 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC60809  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 .1 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  JEPS117487  Antennaria geyeri Lowell Ahart, John Dittes 2010-7-31 16974 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
  JEPS94559  Antennaria geyeri Vernon Oswald and Lowell Ahart 1997-6-24 8591 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1685 Comment
  JEPS107290  Antennaria luzuloides Lowell Ahart, John Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1523734  Antennaria luzuloides Gary Schoolcraft 1981-7-8 498 Lassen s of Coulthurst Flat 1920 Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  CHSC54171  Antennaria luzuloides subsp. luzuloides Vernon H. Oswald 1991-5-28 4625 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  POM39272  Antennaria rosea Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1523723  Antennaria rosea Gary Schoolcraft 1982-8-10 865 Lassen se of, along Hwy 139 Adin 1584 Comment
  UC1583976  Antennaria rosea G. Schoolcraft 1990-7-2 2103 Lassen w of Cold Spring Mtn. 1645 Comment
  CHSC60304  Antennaria rosea subsp. confinis Mary Ann Showers 1992-6-13 2558 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  CHSC60714  Antennaria rosea subsp. rosea Vernon H. Oswald; Lowell Ahart 1993-6-14 5506 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. . 1728 Comment
  HSC28853  Antennaria rosea subsp. rosea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19180 Lassen Harvey Valley near Cone Springs Comment
  CHSC99146  Apera interrupta Lowell Ahart; John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS114859  Apera interrupta Lowell Ahart, John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC1035982  Apocynum androsaemifolium Helen K. Sharsmith 1955-6-27 4516 Lassen adjacent to Hwy. 89 n. of Hat Creek Ranger Station; Lassen Nat'l Forest 1158 Comment
  JEPS95872  Apocynum cannabinum Vernon H. Oswald and L. Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395: T31N R15E NE1/4 Sect. 3, 4450 ft elevation, sagebrush scrub, volcanic rock substrate 1356 Comment
  CAS-BOT-BC392212  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  CHSC6240  Aquilegia formosa M. West 1946-6-17 Lassen Aspen Grove on Mt. Fredonyer 2133 Comment
  UC773880  Aquilegia formosa L. R. Short 1936-6-26 S- 407 Lassen Lassen National Forest, Burgess Spr. Exp. Range 1837 Comment
  CHSC4814  Aquilegia formosa var. truncata R. Carter 1967-7-29 573 Lassen Found in Murrer's meadow, W side where canal runs. 1584 Comment
  SEINET10866232  Arabis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2601 Lassen Hallelujah jct intersection of u.s. 395 And state hwy 70; in open waste area adjacent to artemisia tridentata comm. 1433 Comment
  CHSC29891  Arabis holboellii var. retrofracta Robin L. Ondricek 1978-5-25 29 Lassen .4 mi N of Lake Forest Development on Co. Rd. A1. 1828 Comment
  POM316895  Arabis rectissima Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  NY119422  Arabis rectissima R. C. Rollins 1983-7-5 83227 Lassen 2 miles S of Eagle Lake Summit Comment
  NY119565  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  SEINET1912095  Arceuthobium abietinum R. L. Mathiasen 2010-1 1062 Lassen 3.8 km N of jct. of Routes 89 and 36 on Rte. 89. Ca. 3 km S of S entrance to Lassen Nat. Park 1900 Comment
  CAS-BOT-BC409988  Arceuthobium campylopodum Louella Bass 1973-5-29 EU 48 Lassen Elysian Valley 1325 Comment
  UC1584019  Arceuthobium campylopodum G. Schoolcraft 1990-8-1 2120 Lassen betw Cleghorn and Heath Reservoirs 1828 Comment
  POM339728  Arctostaphylos manzanita subsp. manzanita F. R. Fosberg 1969-8-16 51425 Lassen (California Registered Historical Landmark 678) 10 mi. west of Susanville. Comment
  RSA38477  Arctostaphylos manzanita subsp. manzanita P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1509 Comment
  CAS-BOT-BC45896  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45898  Arctostaphylos nevadensis A. H. Kramer 1930-7-1 s.n Lassen Prospect Peak, Lassen National Park Comment
  CAS-BOT-BC45900  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45907  Arctostaphylos nevadensis Bill Wilson 1967-7-14 205 Lassen Silver Lake, 20 mi. NW of Susanville 1889 Comment
  CHSC5245  Arctostaphylos nevadensis M. West 1946-7-12 Lassen Eagle Lake. Silver Lake. 1981 Comment
  RSA46474  Arctostaphylos nevadensis Doris K. Kildale 1926-9-11 2764 Lassen Juniper Lake. 2055 Comment
  CAS-BOT-BC45894  Arctostaphylos nevadensis Clare B. Hardham 1971-8-22 18386 Lassen North slopes 2133 Comment
  UC82992  Arctostaphylos patula T. S. Brandegee 1892-7-26 Lassen Milford Comment
  SEINET10537551  Arenaria aculeata Mary Susan Taylor 1982-8-27 Taylor 5056 A 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
  UC506974  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 223 Lassen Lassen Forest 1728 Comment
  RSA152609  Argemone munita subsp. rotundata I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. e of Susanville Comment
  JEPS35887  Arnica chamissonis Brown and Wieslander 1922-7-30 26 Lassen Martin Springs , Eagle Lake Comment
  UC1136826  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 184 Lassen (Dry Lake) Grass Valley Grass Valley, Thompson Meadow 1694 Comment
  UC1533139  Arnica chamissonis Gary Schoolcraft 1986-8-19 1667 Lassen Said Valley Res. 1630 Comment
  CHSC99739  Arnica chamissonis subsp. foliosa Lowell Ahart; John Dittes 2008-6-20 14902 Lassen In a wet meadow, about 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC2027205  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen National Forest. About 1/2 mile WNW of Griffith Hill, ca 30 ft N of 30N21. Swain Mountain quadrangle Comment
  CHSC66715  Arnica mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8123 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  JEPS35883  Arnica mollis Frances D. Payne 1929-7-12 99 Lassen Upper Silver Creek, se extremity of Warner Mts Warner Mountains, Upper Silver Creek 2499 Comment
  CAS-BOT-BC85030  Arnica sororia E. B. Babcock; G. L. Stebbins 1936-6-8 1788 Lassen Gentle north facing slope of hillside, 2 miles north of Madeline. 1371 Comment
  JEPS103219  Arnica sororia G. Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UC1136977  Artemisia arbuscula subsp. arbuscula L. R. Short 1936-9-30 S- 506 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1746 Comment
  UC747143  Artemisia arbuscula subsp. arbuscula G. Thomas Robbins 1945-10-18 2156 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  CHSC118471  Artemisia arbuscula subsp. thermopola Don Leply 2016-7-31 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile northeast of railroad crossing on Highway 44. 40N31:46.7 x 121W01:35.9. 1743 Comment
  RSA233757  Artemisia biennis R. F. Thorne, C. W. Tilforth 1969-9-6 39254 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  UC1119577  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 948 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD159580  Artemisia douglasiana D. S. Park 2011-8-24 317 Lassen East of Westwood. Near Goodrich Creek. 319 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
  CAS-BOT-BC90766  Artemisia ludoviciana subsp. ludoviciana G. H. True 1937-7-10 783 Lassen Bull Flat (n. of Honey Lake) Comment
  CHSC30627  Artemisia tridentata M. A. Dubin 1975-7-20 8 Lassen Eagle Lake Field Station by Turkey Roll Hill. 1569 Comment
  CAS-BOT-BC97324  Artemisia tridentata subsp. tridentata Margaret Williams; Steven Williams 1974-7-26 74 -L-4 Lassen area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC97326  Artemisia tridentata subsp. tridentata Clare B. Hardham 1971-8-22 18395 Lassen Diamond Mountain 2346 Comment
  CAS-BOT-BC97328  Artemisia tridentata subsp. tridentata L. S. Smith 1918-8-11 1026 Lassen Modoc National Forest, Camp One 2529 Comment
  RSA0092309  Artemisia tridentata subsp. tridentata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31432 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  RSA758317  Artemisia tridentata subsp. tridentata Doug Goldman 2004-11-5 2935 Lassen To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake 1256 Comment
  CHSC115816  Asclepias fascicularis Lowell Ahart; John Dittes 2015-7-14 20325 Lassen On the edge 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. 1269 Comment
  SEINET178457  Asclepias fascicularis Unknown 1897-6-25 Lassen Susanville 1341 Comment
  UC1037219  Asclepias fascicularis Leo Whitney 1933-8-10 1580 Lassen near Hall's Flat (ca. 25 mi w of upper end of Eagle Lake); Lassen National Forest 1737 Comment
  JEPS124872 Image available Asclepias speciosa Lynne C. Carter 1967-7-11 81 Lassen 1.1 mi. South of Millford on Hwy 395. West of Honey Lake. Comment
  CHSC25906  Astragalus K. R. Stern 1967-7-1 2468 Lassen Roadside, Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  POM204051  Astragalus accidens var. hendersonii J. T. Howell 1934-6-10 11875 Lassen Janesville Comment
  NY791371  Astragalus andersonii D. B. Dunn 1971-6-2 17802 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402.1 Comment
  HSC61704  Astragalus anxius Thomas W. Nelson, Jane P. Nelson 1980-7-6 5988 Lassen In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin. Comment
  CAS-BOT-BC178762  Astragalus canadensis var. brevidens John Thomas Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake Comment
  NY674058  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1646 Comment
  UC1553369  Astragalus canadensis var. brevidens Gary Schoolcraft 1988-7-7 1821 Lassen Madeline Plains n of Observation Peak and Horne Ranch Rd.; Madeline Plains n of Observation Peak 1645 Comment
  HSC69613  Astragalus curvicarpus Gary Schoolcraft 1979-6-19 77 Lassen Just N of West Painter Flat Rd. intersection. 1720 Comment
  RSA111043  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-15 5752 Lassen NE of Litchfield. 1234 Comment
  SEINET5325001  Astragalus curvicarpus M. J. Williams, J. T. Howell 1973-5-12 73 C-16 Lassen Near Herlong turn-off, Hwy. 395. 1250 Comment
  CAS-BOT-BC177845  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-16 8336 Lassen Near Susanville Comment
  NY803539  Astragalus curvicarpus var. curvicarpus N. H. Holmgren 1980-7-4 9504 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  UC372641  Astragalus curvicarpus var. curvicarpus Marcus E. Jones, A. M. 1897-6-24 Lassen 10 to 15 mi w from Amedee; w from Amedee 1219 Comment
  RSA59356  Astragalus curvicarpus var. curvicarpus E. K. Balls 1950-5-21 14825 Lassen Near Standish, Hwy 395, 7 miles from jct of Hwy 36 and 395. 1250 Comment
  SEINET5325006  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch. 1280 Comment
  UC13367  Astragalus filipes M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  RSA415413  Astragalus gibbsii Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1128797  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CDA26675  Astragalus gibbsii Taylor Jun 1938 Lassen Susanville. 0 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 Comment
  SD43503  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford, dry silty flats 1260 Comment
  RSA110067  Astragalus gilensis H. D. Ripley, R. C. Barneby 1944-5-29 5951 Lassen Container 1372 Comment
  CAS-BOT-BC186911  Astragalus inversus Leo Whitney 1935-7-21 1931 Lassen Near Harvey Valley Spring, Lassen N.F. 1737 Comment
  CAS-BOT-BC186913  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5749 Lassen W. of Susanville 1310 Comment
  POM180437  Astragalus inversus T. S. Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  RSA111016  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 5749 Lassen West of Susanville 1311 Comment
  CAS-BOT-BC186943  Astragalus iodanthus Arnold Tiehm 1980-5-29 5755 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  CAS-BOT-BC229047  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UCD35735  Astragalus lentiginosus Beecher Crampton 1960-6-20 5738 Lassen Harvey Valley, 6 miles north of Bogard Ranger Station. 1676 Comment
  RSA109609  Astragalus lentiginosus var. chartaceus H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen West of Susanville 1311 Comment
  JEPS118160  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
  NY675579  Astragalus lentiginosus var. floribundus A. Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile north of Wendel 1231 Comment
  POM25710  Astragalus lentiginosus var. floribundus Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  UC1537105  Astragalus lentiginosus var. floribundus Gordon H. True Jr. 1938-7-8 903 Lassen n Hot Spring Mountain (Mud Flat); n of Hot Spring Mountains, Mud Flat 1371 Comment
  JEPS114628  Astragalus lentiginosus var. lentiginosus Lowell Ahart, John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber 1268 Comment
  POM26417  Astragalus lentiginosus var. lentiginosus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  UC13403  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  CHSC99122  Astragalus lentiginosus var. salinus Lowell Ahart; John Dittes 2008-6-19 14889 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
  POM280735  Astragalus lentiginosus var. salinus Alice Eastwood, John T. Howell 1940-6-16 8335 Lassen Near Susanville. Comment
  NY676224  Astragalus malacus B. M. Bartholomew 1993-5-13 6551 Lassen Just south of Ravendale 1580 Comment
  SD107330  Astragalus malacus Christopher Davidson 1975-6-7 2748 Lassen 1 mile east of Beckwourth Pass on Hwy 70, high steppe or rolling grassland, unfenced on south side of road, in dry channel at lower end of gentle slope 1524 Comment
  UCD55300  Astragalus malacus Ellen Dean; Gary Schoolcraft 2006-5-16 3121 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
  JEPS54791  Astragalus pulsiferae J. B. Davy June 1897 Lassen Chat Long Valley, Chat Comment
  SEINET4853425  Astragalus pulsiferae var. coronensis Unknown 2001-6-14 28158 Lassen E of Hwy 395, rd to Rams Horn Spring campground. 1540 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
  NY694125  Astragalus pulsiferae var. pulsiferae H. D. D. Ripley 1943-6-7 5499 Lassen East side of Beckworth Pass, south Lassen Co. 1494 Comment
  SEINET10452237  Astragalus purshii Mary Susan Taylor 1974-1 Taylor 257 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET6654255  Astragalus purshii var. lagopinus Stanley L. Welsh, N. Duane Atwood 2001-6-14 28157 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1539 Comment
  CHSC48504  Astragalus purshii var. purshii Vernon Oswald 1986-5-28 2052 Lassen Rd. 201 on the west side of Eagle Lake, 22.1 mi n of Hwy 36, 9.2 mi n of Gallatin Beach Road. 1615 Comment
  CHSC60739  Astragalus purshii var. purshii Vernon H. Oswald; Lowell Ahart 1993-6-14 5520 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
  UC1137765  Astragalus purshii var. tinctus August L. Hormay 1934-5-9 Lassen Lassen National Forest , Black's Mt Headquarters (Black's Mt. Headquarters) 1706 Comment
  UC1299224  Astragalus purshii var. tinctus Freed W. Hoffman 1946-6-8 913 Lassen Highway 395 Dry Creek (Dry Creek) Comment
  RSA339987  Astragalus whitneyi Noel Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 2195 Comment
  UC584308  Astragalus whitneyi G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2275 Lassen sw Diamond Mt. (s of Susanville); sw of Diamond Mt., s of Susanville 2164 Comment
  SEINET10490007  Astragalus whitneyi var. confusus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17770 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc. 1372 Comment
  CAS-BOT-BC200876  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susnaville. Perkin's Ranch 2225 Comment
  JEPS108557  Astragalus whitneyi var. siskiyouensis L. P. Janeway 2005-7-4 8469 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41 1752 Comment
  NY701850  Astragalus whitneyi var. siskiyouensis B. J. Ertter 1987-6-16 7183 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 Comment
  SEINET3025898  Astragalus whitneyi var. sonneanus Marcus E. Jones 1897-6-28 Lassen Top of Diamond Peak, Susanville. Perkin's Ranch. 2230 Comment
  CAS-BOT-BC17410  Athysanus pusillus Doris Kildale Gillespie 1930-5-12 9342 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CHSC64780  Atriplex argentea var. hillmanii Vernon H. Oswald 1995-6-7 6842 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road near milepost 19.5 just e of Skedaddle Creek, e of Wendel, ne of Susanville. 1231 Comment
  CHSC76091  Atriplex argentea var. mohavensis Lowell Ahart; Vernon Oswald 1999-9-13 8207 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  SEINET5344853  Atriplex canescens S. Massed, Jared Jaggers, D. Mathews 2011-10-24 Seeds of Success. NV 030 . Carson Lassen Northeast of Doyle. On the Northern slopes of Fort Sage Mountains. 1291 Comment
  CHSC109990  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 B 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
  JEPS120466  Atriplex canescens var. canescens L. P. Janeway, B. Castro 2012-7-2 10920 A 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. Comment
  RSA3150  Atriplex confertifolia C. B. Wolf 1931-9-5 1278 -1279 Lassen Honey Lake Valley, 1/2 mile from Amedee R.R. Station on road to Doyle. Comment
  UC768839  Atriplex gardneri var. falcata R. F. Hoover 1940-10-5 4677 Lassen alkali plain s Secret Valley; s of Secret Valley Comment
  UCR244045  Atriplex gardneri var. falcata Jim Andre 1993-6-1 19715 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  UC88459  Balsamorhiza T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  POM35967  Balsamorhiza deltoidea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC68609  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1997-5-7 8402 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. 1420 Comment
  CAS-BOT-BC106489  Balsamorhiza hookeri David D. Keck; J. Clausen 1935-6-24 3747 Lassen 2 mi. S. of Ravendale, in light sandy clay soil with some rock. 1463 Comment
  CAS-BOT-BC106494  Balsamorhiza hookeri Clarence Quick 1963-7-12 63 -38 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CAS-BOT-BC106497  Balsamorhiza hookeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49167 Lassen In open yellow pine forest, Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  CHSC7646  Balsamorhiza hookeri Beverly J. Wise 1969-4-17 14 Lassen 1 mi north on Hwy 139. 1341 Comment
  UC1035988  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen 5 miles beyond Blue Lake on road to Likely. Warner Mountains, Modoc National Forest Comment
  JEPS103175  Balsamorhiza hookeri G. Schoolcraft 2000-4-26 2891 Lassen 1.8 miles W of Highway 395 on Shaffer Mountain Road 1554 Comment
  UC1137703  Balsamorhiza sagittata A. Simontacchi 1940-6-4 802 Lassen 7.0 mi sw of Jacks Lake (Halls Flat); Halls Flat 1828 Comment
  CHSC114353  Balsamorhiza sagittata B. Villegas 2011-5-20 Lassen Susanville. Comment
  CHSC5234  Barbarea orthoceras A. Santos 1946-6-12 Lassen Eagle Lake. Pine Creek. 1584 Comment
  CHSC99151  Barbarea orthoceras Lowell Ahart; John Dittes 2008-6-20 14949 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC76094  Bassia hyssopifolia Lowell Ahart 1999-9-13 8206 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  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
  JEPS121240  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18843 Lassen West margin of duckfield, about 40 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley. Comment
  JEPS121246  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18871 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SJSU4353  Beckmannia syzigachne J. W. Tilden 1960-6-27 1526 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  UC1100216  Beckmannia syzigachne Herbert L. Mason 1947-7-9 13299 Lassen 5 mi e Bieber Comment
  UC573777  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 mi ese Susanville; Susanville Quadrangle 1280 Comment
  UCD56782  Beckmannia syzigachne Leo Whitney 1934-8-6 2210 Lassen Honey Lake Valley. Bank of Susan River. 1371 Comment
  UC1790750  Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road mi W of Hwy 395 on Hwy 70, then 5.5 road mi N on Scott Road 1493 Comment
  UCR182884  Berteroa incana D. Mcdonald 2005-7-18 PDR 1307852 Lassen Modoc Plateau, Hallelujah Junction Comment
  UCR182957  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau, Anderson Ranch in southern part of county [c. 5.5 miles north of Hwy 70 on Scott Road] 1479 Comment
Read comments
May 25 2012
  CHSC58833  Betula pumila var. glandulifera Vernon H. Oswald; Lowell Ahart 1992-7-16 5116 Lassen 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
  CDA10495  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CAS-BOT-BC413001  Bistorta bistortoides A. A. Heller 1938-6-4 15141 Lassen 2 miles east of Westwood 1402 Comment
  CAS-BOT-BC413003  Bistorta bistortoides John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-13 49225 Lassen Elysian Valley northwest of Janesville 1325 Comment
  HSC22872  Bistorta bistortoides John Pratt 1970-6-13 8 Lassen 1677 Comment
  CAS-BOT-BC127951  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CAS-BOT-BC127956  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CAS-BOT-BC128041  Blepharipappus scaber Farris Farris 1935-5-20 s.n. Lassen Three miles southwest of Susanville 1341 Comment
  CAS-BOT-BC128046  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CDA19752  Blepharipappus scaber D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC13477  Blepharipappus scaber J. Pitts 1967-6-23 266 Lassen 2 mi s of Eagle Lake Field Station, on the e side of the road. Comment
  CHSC48131  Blepharipappus scaber Vernon H. Oswald 1986-6-15 2112 Lassen Hwy 36, 15.0 mi E of Plumas-Lassen Co. line, 3.5 mi E of Fredonyer Pass. 1508 Comment
  CHSC68732  Blepharipappus scaber Vernon H. Oswald; Lowell Ahart 1997-5-27 8484 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  HSC81800  Blepharipappus scaber Thomas W. Nelson, Jane P. Nelson 1980-7-6 6030 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  JEPS94612  Blepharipappus scaber Vernon H. Oswald and Lowell Ahart 1997-5-27 8484 Lassen e side of Hwy 139 at a small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  SEINET11261380  Blepharipappus scaber Robert L. Johnson, Mikel R. Stevens 2015-7-10 3922 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  SFV3785  Blepharipappus scaber I. L. Wiggins, D. B. Wiggins 1961-6-11 16355 Lassen East of Eagle Lake, 2 miles north of Susanville. Roadside. 1340 Comment
  UC604683  Blepharipappus scaber Farris Farris 1935-5-20 Lassen Susanville 1341 Comment
  UC773892  Blepharipappus scaber L. R. Short 1936-6-10 S- 415 Lassen Burgess Spr. Exp. Range 1798 Comment
  CAS-BOT-BC127953  Blepharipappus scaber B. J. Hammerly 1941-6-20 s.n. Lassen On dry plateau of lava boulders 8 mi S.-E. of Likely on Blue Lake 1676 Comment
  CAS-BOT-BC128035  Blepharipappus scaber Margaret Williams 1974-8-4 74 - L. - 73 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  RSA152683  Blepharipappus scaber I. L. Wiggins, Dorothy Wiggins 1961-6-11 16355 Lassen Roadside east of Eagle Lake, 2 miles north of Susanville. Comment
  SEINET10945354  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2584 Lassen 6 mi. S of Adin; along CA Hwy. 139 right-of-way; in basalt-clay, grassy road bank; Artemisia-Juniper assoc. 1372 Comment
  UC1181375  Blepharipappus scaber R. W. Thorp and G. I. Stage 1960-6-11 60 -63 Lassen 6.5 mi north of Termo Comment
  UCD129601  Blepharipappus scaber Bob Powell; Vic Claussen 1986-7-17 3274 Lassen 6 air miles south - southwest of Nubieber, within 100 feet of gate across main north-south trending road. 1402 Comment
  CHSC13946  Boechera pinetorum M. S. Taylor 1974-7-12 313 Lassen Above road bank by Clear Lake in Lassen National Forest. Comment
  CAS-BOT-BC14294  Boechera platysperma John Thomas Howell; Gordon H. True 1973-7-31 50040 Lassen Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak. 1737 Comment
  JEPS114362  Boechera puberula Lowell Ahart, John Dittes 2008-6-19 14883 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
  CAS-BOT-BC25510  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 miles west of Madeline. 1584 Comment
  JEPS84940  Boechera retrofracta Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen n.e. side Honey Lake (e. of road over saddle on w. side of Skeedaddle Mountains); Skeedaddle Mountains 1645 Comment
  SEINET3165698  Boechera retrofracta R. W. Spellenberg 2006-6-19 13743 Lassen along a USFS access road 2 km E of Calif. Hwy 139, the junction of road and highway 31 km SE of Modoc Co. line (just S of Adin) 1715 Comment
  CHSC66380  Boechera sparsiflora Vernon H. Oswald; Lowell Ahart 1996-6-17 7774 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  JEPS88209  Boechera sparsiflora Vernon H. Oswald and Lowell Ahart 1996-6-17 7774 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, slope at the bridge spanning the Susan R. on n. side of Hwy 36); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  JEPS90262  Boechera sparsiflora Dean Wm. Taylor with Glenn L. Clifton 1992-5-7 12542 Lassen 1.5 mi sw of Ash Valley Cemetery (Modoc Plateau, Ash Valley); Modoc Plateau, Ash Valley Comment
  CAS-BOT-BC25706  Boechera sparsiflora Reed Clark Rollins; Kathryn W. Rollins; Aileen Roads 1983-7-5 83226 Lassen Plumas National Forest. Above Laufman Ranger Station. 4.5 miles east of US Highway 395. Comment
  JEPS103163  Bolboschoenus maritimus B. Corbin and D. Armentrout 2002-9-4 1098 Lassen Biscar Reservoir, upper pond. 1357 Comment
  SEINET8193957  Brodiaea congesta J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch. Comment
  CHSC60929  Brodiaea coronaria subsp. coronaria Vernon H. Oswald; Lowell Ahart 1993-7-8 5676 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  HSC82193  Brodiaea coronaria subsp. coronaria Thomas W. Nelson, Jane P. Nelson 1980-7-6 6047 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC149499  Bromus briziformis B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6572 Lassen U.S. Highway 395 1.3 km south of railroad crossing and 12. 9 km north of Litchfield. 1330 Comment
  JEPS26570  Bromus briziformis Lauramay T. Dempster 1961-6-17 1675 Lassen about 8 mi n of Karlo Road junction with Hwy 395, w of highway Karlo Road 1584 Comment
  UCD57490  Bromus briziformis R. M. Love 1944-7-10 s.n. Lassen South of Ravendale. Comment
  UC1130972  Bromus carinatus var. carinatus H. P. Hagge 1929-8-12 29 Lassen Logan Mountain 1828 Comment
  UC773968  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1820 Comment
  UCD59099  Bromus carinatus var. marginatus R. Tofsrud 1947-7-1 224 Lassen Between Ravendale and Thermo. Comment
  CDA1827  Bromus japonicus A. A. Beetle 1941-6-28 2809 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
  UC506916  Bromus orcuttianus George A. Fischer, Irwin H. Johnson 1933-7-14 F 261 Lassen Lassen National Forest 1783 Comment
  UC1024701  Bromus racemosus L. Whitney 1934-7-18 2143 Lassen Lassen National Forest 1371 Comment
  POM112560  Bromus secalinus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC106670  Bromus tectorum B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC12421  Bromus tectorum Anne Linda Brisk 1969-6-19 4 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC23519  Bromus tectorum Wayne O. Baum 1971-7-5 71 -15 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC36476  Bromus tectorum Margaret E. Halloran 1982-6-6 13 Lassen N of Eagle Lake Field Station on a point directly e of Pelican Pt. Comment
  HSC9348  Bromus tectorum C. S. Chavez 1965-5-1 60 Lassen 20 mi. N of Susanville on Hwy. 395. 1220 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
  UC1131326  Bromus tectorum A. Simontacchi 1940-6-8 835 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  SEINET10515057  Bromus tectorum Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3117 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC185530  Bromus vulgaris John Thomas Howell; Gordon H. True 1973-7-31 50056 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CAS-BOT-BC438313  Calandrinia ciliata H. D. Ripley; R. C. Barneby 1942-6-14 5736 Lassen Westwood 1554 Comment
  CHSC112410  Callitriche heterophylla Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18750 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
  POM312337  Callitriche verna Verne Grant, H. L. Mason 1947-7-9 13294 Lassen 5 miles E of Bieber. Comment
  SEINET3828391  Callitriche verna R. F. Thorne, Larry E. De Buhr 1975-1 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC27601  Calocedrus decurrens George Deniso 1978-7-24 99 Lassen Roadside between Gallatin Peak and Miners Bay, SE side of Eagle L. 1597 Comment
  CHSC71  Calocedrus decurrens K. McKenzie 1928-4-10 Lassen Big Valley Mountain. 914 Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  UC119897  Calochortus macrocarpus T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  HSC63946  Calyptridium monospermum Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 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
  CHSC6233  Calyptridium umbellatum L. Harman 1946-6-23 Lassen Roop mountain. 2133 Comment
  UC72577  Calyptridium umbellatum Milo S. Baker 1890-1 Lassen Milford Comment
  SD52147  Calyptridium umbellatum Unknown 1894-7-2 Lassen Robin's Creek 1370 Comment
  SEINET188321  Calyptridium umbellatum C. L. Hitchcock 1940-5-26 6608 Lassen Ca 12 mi N of Fall River Mills (Shasta Co) on Fall River 1372 Comment
  RSA0017409  Calystegia occidentalis subsp. occidentalis Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  HSC22954  Camassia quamash subsp. breviflora John Pratt 1970-6-21 32 Lassen Seasonally flooded lake edge 1707 Comment
  JEPS61547  Camassia quamash subsp. quamash Leland S. Smith 1927-6-10 14 Lassen Lassen National Forest, Norvell Flat Norvell Flat; Lassen National Forest, Norvell Flat 1747 Comment
  UC2027336  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along Highway 395 ca. 6.6 m S of Karlo Road. quadrangle. Comment
  POM38358  Camissonia andina Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA38438  Camissonia boothii subsp. alyssoides P. A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Hwy 395. 1341 Comment
  NY851231  Camissonia claviformis var. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale, on Highway 395 Comment
  SEINET5343990  Camissonia contorta M. J. Williams 1974-7-26 74 -L-22 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 70 1494 Comment
  UC180090  Camissonia contorta Milo S. Baker 1890-1 Lassen Milford Comment
  UC69560  Camissonia contorta J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Honey Lake Valley, Long Valley Comment
  JEPS107466  Camissonia parvula Lowell Ahart, John Dittes 2005-6-1 11852 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
  HSC30037  Camissonia tanacetifolia D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19153 Lassen 3 mi. N of Westwood Comment
  NY852073  Camissonia tanacetifolia J. T. Howell 1973-8-1 50209 Lassen Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville 2164 Comment
  CAS-BOT-BC160833  Camissonia tanacetifolia subsp. quadriperforata James Jokerst 1983-5-31 1787 Lassen Near Madeline Plains 1583 Comment
  CAS-BOT-BC160868  Camissonia tanacetifolia subsp. tanacetifolia M. S. Baker; Frank Nutting 1894-8-21 s.n. Lassen Near Eagle Lake 1524 Comment
  CAS-BOT-BC160877  Camissonia tanacetifolia subsp. tanacetifolia R. K. Gierisch; D. H. Esplin 1969-7-18 3550 Lassen Near Modoc National Forest. Madeline Plains Comment
  CAS-BOT-BC160865  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1963-5-29 18426 Lassen Along U. S. Highway 395, 0.9 miles north of Ravendale Comment
  CAS-BOT-BC160874  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  NY119877  Cardamine breweri R. C. Rollins 1981-5-30 81168 Lassen Gold Run Road, toward Ski Line Drive, 10 miles S of Susanville Comment
  UC10332  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC99732  Cardamine oligosperma Lowell Ahart; John Dittes 2008-6-20 14942 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  CDA3662  Cardaria chalepensis T. C. Fuller 1964-10-7 12695 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 1 mile southwest of Nubieber. 0 Comment
  UC1137782  Carex August L. Hormay 1934-5-14 Lassen Gray's Flat Well Lassen National Forest 1706 Comment
  UCD163081  Carex Jack Major 1966-6-24 Lassen Modoc National Forest. Long Valley. 3 airline miles southwest of Patterson Guard Station. (Exact location unknown. Coordinates estimated by label maker.) 1981 Comment
  CHSC112416  Carex angustata Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18769 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  JEPS96097  Carex aquatilis var. aquatilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7813 Lassen Bizz Johnson Trail at milepost 6.0 e Devils Corral Trailhead (<trailhead> located off Hwy 36 w of Susanville); Modoc Plateau 1420 Comment
  CAS-BOT-BC18105  Carex athrostachya John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49456 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1100437  Carex athrostachya Herbert L. Mason 1947-7-9 13300 Lassen 5 mi E of Bieber Comment
  UC2031878  Carex bolanderi Nick Otting 2003-7-17 701 Lassen Cascade Mountains, Susan River,3.25 air miles west of Susanville. Comment
  UC2015834  Carex breweri Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4443 Lassen Lassen Volcanic National Park. Lassen Peak, near parking area. Comment
  CHSC96431  Carex cusickii Gordon Leppig; J. Cromwell 1997-7-27 620 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95168  Carex cusickii Gordon Leppig, J. Cromwell 1997-7-26 600 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC113778  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highwy 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  POM80803  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA298354  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen About 2 miles north of Westwood. Comment
  UC190412  Carex douglasii M. S. Baker and Frank Nutting 1894-7-5 Lassen Mts. s Dixey Valley Comment
  UC1924590  Carex douglasii Debra Valov 2006-5-28 2006020 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UC773860  Carex douglasii L. R. Short and Wm. Gansberg June 1936 S- 419 Lassen Burgess Spring Experiment Range 1856 Comment
  CDA33049  Carex douglasii T. C. Fuller 1963-7-15 10890 Lassen South side of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  SEINET7485203 Image available Carex filifolia Barbara L. Wilson, Danna Lytjen and Nick Otting 2005-1 11494 Lassen Blue Door Flat, seven or eight miles east of Highway 295 on county road 510 1774 Comment
  CAS-BOT-BC20166  Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  HSC48223  Carex filifolia var. erostrata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19171 Lassen Harvey Valley near Cone Springs Comment
  UC1133498  Carex filifolia var. erostrata Robert W. Gardner 1939-7-6 G- 30 Lassen Grass Valley Halls Flat Quadrangle Comment
  CAS-BOT-BC20164  Carex filifolia var. erostrata Lassen 1927 G. S. Crew 1927-7-15 60 Lassen Lassen Forest. 1691 Comment
  SEINET7559362 Image available Carex fracta Barbara L. Wilson, Richard Brainerd, Bruce Newhouse 2004-8-28 11194 Lassen Near Bluff Falls in the Lassen National Forest, approximately 0.7 air mile south of the south boundary of Lassen Volcanic National Park on Highway 89. 1981 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
  UC1609196  Carex heteroneura Vernon H. Oswald and 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
  CHSC110898  Carex integra Lowell Ahart; John Dittes 2012-7-9 18299 Lassen In the meadow, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC103653  Carex lenticularis var. limnophila Thomas W. Nelson, Jane Nelson 1985-8-10 8010 Lassen Along north side of Silver Lake 1829 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
  JEPS103202  Carex microptera G. Schoolcraft 1994-7-7 2366 A Lassen south end of Warner Mountains West of Boot Lake 2194 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
  CHSC96455  Carex nebrascensis Gordon Leppig 1998-8-17 1053 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  UC1536798  Carex nebrascensis Gordon H. True Jr. 1939-6-15 995 Lassen near Grasshopper Valley; Bullard Lake Comment
  HSC103614  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8005 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC119715  Carex nervina Clare B. Hardham 1961-6-17 7508 Lassen Baxter Creek south of Susanville. Comment
  UC2031879  Carex pachystachya Nick Otting and Dick Brainerd 2003-7-17 700 Lassen Cascade Mountains, Susan River, 4 air miles west of Susanville. Comment
  CHSC66413  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-17 7809 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  SEINET13407108  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek 1768 Comment
  SEINET7571315 Image available Carex petasata L. P. Janeway 2004-6-26 8153 Lassen Poison Lake 7.5' quad, High Cascade Range, about 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  SEINET10817202  Carex phaeocephala Willard W. Eggleston 1927-7-11 Eggleston 21474 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  SEINET7572131 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11879 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  UC1133503  Carex praegracilis Robert W. Gardner 1939-6-15 G- 37 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  CAS-BOT-BC118400  Carex praegracilis John Thomas Howell 1975-7-23 51407 Lassen Wet ground along Hwy 395 between Johnstonville and Jonesville 1280 Comment
  CHSC118476  Carex praegracilis Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. Sandy Beach of Eagle Lake, ~1.6 air miles north of Spalding marina. 1559 Comment
  SEINET7573104 Image available Carex raynoldsii George W. Gillett 1957-7-29 948 Lassen Lassen Volcanic National Park, along trail between Butte Lake and Snag Lake. 1859 Comment
  CAS-BOT-BC118027  Carex rossii John Thomas Howell; Gordon H. True 1973-8-1 s.n. Lassen Headwater of Baxter Creek, Diamond Mts. 2164 Comment
  JEPS118161  Carex rossii Dean W. Taylor 2009-5-20 20604 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  CAS-BOT-BC118229  Carex scopulorum var. bracteosa John Thomas Howell 1934-6-14 12162 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC117700  Carex simulata Alice Eastwood; John Thomas Howell 1940-6-15 8305 Lassen Willow Creek near Hayden Hill. Comment
  HSC95305  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 514 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC2031886  Carex simulata Nick Otting 2003-7-16 686 Lassen Modoc Plateau, Smoke Creek, at Big Spring, 13 air miles east-southeast of Ravendale. Comment
  CAS-BOT-BC117018  Carex straminiformis Clare B. Hardham 1971-8-22 18423 Lassen Diamond mountain. Comment
  SEINET13715331  Carex straminiformis G. Schoolcraft 1997-8-6 2669 Lassen Diamond Mountain, N slope 2317 Comment
  CAS-BOT-BC116611  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  CAS-BOT-BC116613  Carex subfusca Hans Leschke 1958-8-17 1568 Lassen Reflexion Lake 1792 Comment
  HSC95272  Carex vesicaria Gordon Leppig, Kai Neander, Juli Neander 1997-7-26 695 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC103632  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8027 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  SEINET7579960 Image available Carex vesicaria George W. Gillett 1957-7-22 879 Lassen Lassen Volcanic National Par, Snag Lake, matin of gravel bars along south shore. 1850 Comment
  RSA517387  Carex whitneyi Leland S. Smith 1922-7-23 75 Lassen Lassen National Forest. Comment
  CAS-BOT-BC248971  Castilleja Margaret M. Hanna 1956-6-3 943 Lassen 2 mi. West of Nubieber Comment
  HSC20562  Castilleja angustifolia M. L. Stuart 1965-5-2 56 Lassen 2 mi. N of Termo. on Hwy. 395 1829 Comment
  CAS-BOT-BC249615  Castilleja applegatei subsp. pinetorum A. M. Vollmer; L. Beane 1953-7-1 39 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC249618  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-20 44 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  CHSC12459  Castilleja applegatei subsp. pinetorum Robert W. Severin 1969-7-6 5 Lassen 1 mile e E.L.B.S. on road to Five Points. Comment
  CHSC13732  Castilleja applegatei subsp. pinetorum Cornell Freeman 1973-7-11 5 Lassen Found on Gallatin Pk. on the east side of Eagle Lake. Comment
  CHSC60412  Castilleja applegatei subsp. pinetorum Mary Ann Showers 1992-6-13 2538 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  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
  JEPS85742  Castilleja applegatei subsp. pinetorum Roy E. Buck and Robert A. Price 1988-6-26 1030 Lassen ca 0.5 air mi n Fredonyer Peak main summit (on subsidiary peak, ca 30 air mi nne of Susanville); Fredonyer Peak 2377 Comment
  UC1484795  Castilleja campestris subsp. campestris Noel H. Holmgren and Patricia K. Holmgren 1978-6-10 8903 Lassen 9 mi ene Termo (and 8 air distance); Madeline Plains, Coyote Flat 1630 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
  CHSC23901  Castilleja lacera A. W. Harvilik 1967-7-8 39 Lassen Collected in Murrer's Meadow ca. 3 mi se of Eagle Lake Biological Station. 1524 Comment
  CHSC66262  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1996-6-24 7842 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow. 1633 Comment
  CHSC92738  Castilleja lacera L. P. Janeway 2005-7-3 8454 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  HSC82247  Castilleja lacera Thomas W. Nelson, Jane P. Nelson 1980-7-6 5985 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS79153  Castilleja lemmonii L. R. Heckard with R. Bacigalupi 1980-6-12 5260 Lassen ne Westwood (near golf course) 1554 Comment
  HSC69066  Castilleja linariifolia Gary Schoolcraft 1979-7-5 124 Lassen Near top of Observation Peak 2134 Comment
  UC1523790  Castilleja miniata Gary Schoolcraft Aug 1979 Lassen Goodrich Meadow 1554 Comment
  CAS-BOT-BC244889  Castilleja miniata Alice Eastwood 1912-8-22 1893 Lassen Battle Creek meadows. Lassen Butte Region. Comment
  CAS-BOT-BC244890  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen Foot of Lassen Butte Comment
  CHSC5901  Castilleja miniata subsp. miniata R. Gein 1946-6-22 Lassen Webb's Camp, Eagle lake. 1557 Comment
  JEPS86248  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5529 Lassen about 0.5 mi e Nubieber 1249 Comment
  SBBG7071  Castilleja pilosa H. and M. Dearing 1939-6-6 3566 Lassen Pitt River, near Bieber Comment
  UC1012185  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen 5 mi s Ravendale (Route 395) 1645 Comment
  RSA505409  Castilleja psittacina R. C. Bacigalupi, S. Galen Smith 1957-6-28 6004 Lassen 5.9 miles south of Madeline. 1616 Comment
  CHSC116102  Castilleja tenuis Lowell Ahart; John Dittes 2015-7-13 20314 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
  JEPS88198  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1996-6-17 7802 Lassen 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy 36, n side of trail between Devils Corral Trailhead and the 6.0 mi post); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  RSA0037002  Castilleja tenuis Lowell A. Ahart, John Dittes 2008-6-19 14874 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  RSA0035394  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2008-6-20 14920 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC48530  Ceanothus cordulatus A. M. Vollmer; L. Beane 1953-7-1 31 Lassen Along Halls Flat road, beginning 6 miles west of Susanville, to MacArthur 1554 Comment
  CHSC46505  Ceanothus cordulatus Lowell Ahart 1974-7-9 514 Lassen Growing along the edge of Eagle Lake Road on dry stony soil, about 4 miles west of Susanville. 1584 Comment
  SEINET196483  Ceanothus cordulatus C. B. Heisser 1947-7-13 s.n. Lassen Near Westwood Comment
  CAS-BOT-BC52047  Ceanothus prostratus A. M. Vollmer; L. Beane 1953-7-1 88 Lassen Along Halls Flat Road, beinning 6 miles West of Susanville to McArthur 1554 Comment
  CAS-BOT-BC52053  Ceanothus prostratus A. A. Heller 1941-6-26 16230 Lassen on the ridge West of Nieubieber Comment
  SEINET10493654  Ceanothus prostratus Mary Merello 1993-6-28 Merello 748 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC727092  Ceanothus prostratus A. A. Heller 1941-6-26 16230 Lassen on roadside banks on the ridge w Nieubieber; w of Nieubierber Comment
  SEINET5339354  Ceanothus prostratus W. Priest 1956-4-27 s.n. Lassen 2 miles north of Susanville on US 395 1524 Comment
  UC1071532  Ceanothus velutinus A. Simontacchi 1940-6-15 866 Lassen 1.0 mi ssw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA747546  Ceanothus velutinus var. velutinus K. M. Meyer, A. Townesmith 2007-7-23 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC272110  Centaurea cyanus Margaret Williams; Steven Williams 1974-7-26 74 -L-9 Lassen Near Hallelujah Junction west of Why 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  UCD130022  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen east side of Highway 395 to Madelaine, 1.9 mile north of Termo. Comment
  CDA7345  Centaurea squarrosa Loring White 1950-8-9 Lassen Cramer Ranch. Big Valley 0 Comment
  UCD130124  Centaurea virgata subsp. squarrosa Dan Marcum 1980-8-24 s.n. Lassen Big Valley. Comment
  JEPS46972  Centaurium exaltatum W. L. Jepson 1918-8-2 7759 Lassen Beckwith Pass 1463 Comment
  JEPS84967  Centaurium exaltatum Barbara Ertter 1987-7-24 7305 Lassen ca 0.75 mi ene Beckwourth Pass (at the end of old crumbling paved road) 1524 Comment
  NY187215  Centaurium exaltatum B. J. Ertter 1987-7-24 7305 Lassen Ca. 3/4 mi ENE of Beckwourth Pass at end of crumbling paved road. 1524.0 Comment
  SEINET7379749 Image available Centromadia pungens M. J. Williams, G. Smith 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  HSC23531  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  CAS-BOT-BC400181  Ceratophyllum demersum Milo S. Baker July 25 3644 a Lassen Eagle Lake Comment
  CAS-BOT-BC400183  Ceratophyllum demersum D. Toren; B. Trowbridge 1975-6-19 5183 Lassen Blue Lake 1828 Comment
  SDSU8985  Cercocarpus betuloides D. F. Howe 1961-8-4 3134 Lassen 11.5 miles east of McArthur on US 299. 1372 Comment
  CAS-BOT-BC136988  Cercocarpus betuloides var. betuloides Alice Eastwood; John Thomas Howell 1940-6-11 7965 Lassen Eastern Fall River Valley Comment
  UCD22434  Cercocarpus betuloides var. betuloides Brian Vanden Heuvel 2003-4-10 196 Lassen Shasta National Forest. East slope of Big Valley Mountains. 0.7 miles north of CA 299 on Foothill Road (Four Corners Road), just east of the road. Comment
  UCD35729  Cercocarpus ledifolius Beecher Crampton 1960-6-18 5710 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  SEINET10543177  Cercocarpus ledifolius Katherine L. Morris 1973-5-25 Morris 218 Lassen 2.6 miles w of susanville, on us 36, in an area of pinus jeffreyi and purshia Comment
  JEPS126504  Cercocarpus ledifolius var. intermontanus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-22 CA 350 -77 Lassen Take Horse Lake road and drive north of Horse Lake to the unnamed 6500 ft peak with a metal rod on top. Comment
  CHSC29948  Cercocarpus ledifolius var. ledifolius Robin L. Ondricek 1978-6-8 45 Lassen Ridge E of Lower Dry Lake. 1767 Comment
  CAS-BOT-BC276619  Chaenactis douglasii var. douglasii John Thomas Howell; Gordon H. True 1973-8-1 50208 Lassen Headwaters of Baxter Creek, E slope of Diamond Range S of Susanville 2164 Comment
  CHSC4855  Chaenactis douglasii var. douglasii R. Carter 1967-7-13 586 Lassen On s side of rd. On the rd to Eagle Lake Biology Station and Willow Creek. 1584 Comment
  CDA10717  Chaenactis glabriuscula var. megacephala T. C. Fuller 1963-6-1 10628 Lassen East side of road to Hall s Flat, 4.9 miles south of Pittville. 0 Comment
  UCD19699  Chaenactis nevadensis Donald W. Kyhos 1967-9-1 67 -87 Lassen Mount Lassen National Park, in the devastated area within 1/2 mile north of Hat Lake. Comment
  SEINET7450297 Image available Chaenactis stevioides F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CHSC30593  Chamaebatiaria millefolium Leonard Walk 1972-7-5 40 Lassen On Rd. 5.16 Belowe Eagle Lake Biology Station water tank. 1554 Comment
  CHSC5919  Chamaesaracha nana M. West 1946-6-18 Lassen Spalding's, Eagle Lake. 1554 Comment
  CHSC65310  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1995-8-14 7178 Lassen Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  UC1191330  Chenopodium chenopodioides Malcolm A. Nobs and S. Galen Smith 1949-7-22 1071 Lassen Eagle Lake; ne shore Comment
  SEINET4171909  Chenopodium leptophyllum M. J. Williams 1974-7-26 74 -L-36 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  CDA23383  Chenopodium leptophyllum M. K. Bellue 1938-8-1 Lassen Near Butte Lake. 0 Comment
Read comments
Nov 1 2014
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  CHSC68860  Chenopodium simplex Vernon Oswald; Lowell Ahart 1997-6-24 8602 Lassen South of Susanville on the north side of Diamond Mtn., at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. 1655 Comment
  CAS-BOT-BC39671  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CHSC23506  Chrysolepis sempervirens Wayne O. Baum 1971-7-8 71 -64 Lassen E. slope of Gallatin Peak. 1920 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
  UCSB62935  Chrysolepis sempervirens Sarr, Dan 1995-7-31 Lassen within crater of Crater Mountain 670 Comment
  UC1137594  Chrysothamnus humilis George A. Fischer and Irwin H. Johnson 1933-9-8 F- 281 Lassen w end of Patterson Flat; Lassen Forest, Patterson Flat 1706 Comment
  UCD38333  Chrysothamnus viscidiflorus Beecher Crampton 1954-5-11 1883 Lassen Beckwourth Pass. 1588 Comment
  UC1483877  Chrysothamnus viscidiflorus subsp. lanceolatus G. Schoolcraft 1979-8-23 182 Lassen Painter Flat Comment
  CHSC42146  Chrysothamnus viscidiflorus subsp. viscidiflorus C. E. Laver 1985-8-14 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. Along roadsides. 2194 Comment
  HSC103551  Chrysothamnus viscidiflorus subsp. viscidiflorus Thomas W. Nelson, Jane Nelson 1985-8-10 8030 Lassen Along north side of Silver Lake 1829 Comment
  JEPS97319  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald and L. Ahart 1995-8-14 7183 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Shrub to ca. 5 dm tall growing at roadside. Leaves spirally twisted. 1645 Comment
  SEINET5727104 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7713 Lassen Collected along Forest Road 37N11, off CA Hwy 139.; Modoc National Forest 1555 Comment
  UC1776665  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1994-9-13 2430 Lassen Just above gate along road to Fredonyer Pk. lookout 2255 Comment
  UC747217  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Thomas Robbins 1945-10-7 2154 Lassen 2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  CAS-BOT-BC162755  Chylismia claviformis subsp. cruciformis A. A. Heller 1938-6-23 15211 Lassen On an extensive flat north of Balls Canyon on U.S. Highway #395 Comment
  UC1602277  Chylismia claviformis subsp. cruciformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3399 Lassen Amedee Honey Lake Valley Comment
  SEINET10725178  Cichorium intybus Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 133 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UCD59781  Cinna latifolia John Thomas Howell; G. H. True 1973-8-1 50346 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UC1136774  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spr. Exp. Range Lassen Forest 1825 Comment
  UCD18968  Cirsium andersonii Raymond D. Ratliff 1965-8-5 45 Lassen Lassen National Forest, Harvey Valley Allotment (HV 20-14). 1725 Comment
  SDSU3763  Cirsium andersonii D. F. Howe 1964-8-1 3911 Lassen 3.3 miles on ridge road from Harvey Creek, Warner Mts., Modoc National Forest. 1951 Comment
  CAS-BOT-BC277936  Cirsium canovirens T. C. Fuller 1959-7-7 2739 Lassen Hwy. 395, 6 miles north/road to Karlo Comment
  CAS-BOT-BC278008  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8307 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC278010  Cirsium cymosum Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8596 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1386 Comment
  CAS-BOT-BC278005  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, on highway 299 Comment
  RSA0070594  Cirsium cymosum Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8596 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  UCD20369  Cirsium cymosum Joe DiTomaso 2002-6-5 s.n. Lassen about 3 miles northwest of the junction between Nevada, Modoc, and Lassen counties. Comment
  CDA1259  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 -A Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  JEPS59279  Cirsium occidentale var. californicum W. L. Jepson 1918-8-4 7807 Lassen Horse Lake 1554 Comment
  CDA1489  Cirsium ochrocentrum Lee Wheeler 1959-7-23 s.n. Lassen Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.) Comment
  CAS-BOT-BC280440  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CDA1523  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen Honey Lake; M.A. Mallory prop. Richmond Rd., about 4 mi. SE of Susanville. 0 Comment
  RSA186831  Cirsium undulatum T. C. Fuller 1966-7-22 14981 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CHSC7631  Cirsium vulgare Beverley J. Wise 1968-8-23 16 Lassen 10 mi. N.W. of Susanville on the Las. Co. Rd. 201. 1798 Comment
  CHSC92753  Clarkia gracilis subsp. gracilis L. P. Janeway 2005-7-4 8465 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  CHSC99129  Clarkia gracilis subsp. gracilis Lowell Ahart; John Dittes 2008-6-19 14887 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
  JEPS88247  Clarkia gracilis subsp. gracilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7792 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, just sw of parking area at Devils Corral Trailhead); Modoc Plateau 1420 Comment
  CHSC4876  Clarkia lassenensis R. Carter 1967-6-23 546 Lassen Growing 10 yds. off S side of road. Comment
  JEPS107812  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
  POM260406  Clarkia lassenensis C. L. Hitchcock 1940-5-26 6610 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  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-BC164866  Clarkia rhomboidea Louella Bass 1973-5-29 EV 63 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC440042  Claytonia perfoliata subsp. perfoliata Louella Bass 1973-4-23 25 Lassen Elysian Valley. 1325 Comment
  JEPS83688  Cleome platycarpa Staria S. Vanderpool and Richard Vanderpool 1986-6-8 1237 d Lassen 3.5 mi n Hwy. 395 jct. with highway to Wendel (at Noble Emigrant Trail Historical Monument, Hwy 395) 1341 Comment
  NY222746  Cleome platycarpa N. H. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  NY222826  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen East end of Skedaddle Mtns. near stateline. Comment
  UC1393119  Cleome platycarpa John L. Strother 1970-5-23 951 Lassen about 6 mi n Honey Lake 1280 Comment
  NY242101  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi. N. Wendel Rd. along Skedaddle Ranch Rd. 1463.0 Comment
  CAS-BOT-BC423197  Cleomella parviflora Arnold Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel 1231 Comment
  JEPS83689  Cleomella plocasperma Staria S. Vanderpool and Richard Vanderpool 1986-6-8 1236 a Lassen 0.5 mi w Wendel (on paved county road) 1196 Comment
  RSA739646  Cleomella plocasperma L. P. Janeway, Linus Gog 2008-8-2 9530 Lassen Modoc Plateau just above th flats along the S side of Rusch Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  CAS-BOT-BC423222  Cleomella plocasperma Luella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  SBBG66408  Collinsia childii E. Rockwell -Jun-1925 1023 Lassen Eagle Lake 1554 Comment
  CHSC36465  Collinsia parviflora Heffrey R. Peek 1982-6-3 26 Lassen Ca. .9 mi w of jct of forest service roads 5.16 and 5.17 over Black Mountain. Ca. 20 yds e of 5.16. Comment
  CHSC99505  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
  JEPS17613  Collinsia parviflora Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5406 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadows, s end of Warner Mtns); Warner Mts., Modoc National Forest, Long Valley Meadows 2057 Comment
  JEPS94700  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9126 Lassen 5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  JEPS94834  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9126 Lassen 5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  UC1023722  Collinsia parviflora Francis W. Pennell 1940-6-9 25752 Lassen 7 mi n of Madeline (Route 395); Route 395 1615 Comment
  CDA34520  Collinsia parviflora B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  SBBG12810  Collinsia parviflora A. I. Richardson 1961-5-30 5 Lassen 9 mi S of Eagle Lake 1402 Comment
  SEINET10548283  Collinsia parviflora Jeffrey Huber 1971-6-2 Huber 127 Lassen Approx 30 mi n of susanville, on calif hwy 139, in basalt, pinus artemesia Juniper assoc. 1646 Comment
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  SBBG58193  Collomia grandiflora E. Rockwell -Jun-1925 802 Lassen Eagle Lake 1554 Comment
  SEINET12319536  Collomia grandiflora N. E. Heiken 1978-1 87 Lassen Lower Dry Lakes, E of Eagle L 1573 Comment
  UCD18964  Collomia grandiflora R. E. Francis 1965-7-7 6 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 Comment
  UC1037277  Collomia tinctoria Leo Whitney 1934-7-22 1749 Lassen 6 mi w lower end of Eagle Lake; Lassen National Forest, Antelope Mountain 1981 Comment
  CAS-BOT-BC179604  Comandra umbellata subsp. pallida G. Schoolcraft 1989-6-7 1908 Lassen NW slope of Shaffer Mtn. near top 2011 Comment
  CAS-BOT-BC286116  Conyza canadensis John Thomas Howell 1974-7-8 50503 Lassen Susanville 1295 Comment
  UC1483855  Corallorhiza striata G. Schoolcraft 1980-7-15 309 Lassen w Bieber; Big Valley Mountain Timber Sale area 1798 Comment
  JEPS74351  Cordylanthus maritimus subsp. canescens L. R. Heckard, T. I. Chuang and R. Bacigalupi 1974-7-25 3769 Lassen 4.6 mi n U. S. 395 (along County route A-3 (near old school house, several mi w of Honey Lake); Honey Lake 1219 Comment
  UC762620  Cordylanthus ramosus R. F. Hoover 1940-10-5 4678 Lassen Secret Valley 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
  CHSC83603  Crepis acuminata L. P. Janeway 2001-6-28 7234 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  CHSC93564  Crepis acuminata Lowell Ahart; John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  JEPS107790  Crepis acuminata Lowell Ahart, John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  RSA699966  Crepis acuminata L. P. Janeway 2001-6-20 7197 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1510 Comment
  UC581283  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2314 Lassen about a mi below summit; Black Mountain 1940 Comment
  OBI75880  Crepis bakeri Anthony Baniaga 2011-6-30 404 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1470 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-BC291552  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-10 2297 Lassen Crest of range head of Stony Ridge west of Milford 1950 Comment
  CHSC93561  Crepis intermedia Lowell Ahart; John Dittes 2005-6-1 11918 Lassen Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  JEPS107848  Crepis intermedia Lowell Ahart, John Dittes 2005-6-1 11918 Lassen Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  UC581208  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2216 Lassen just w ridge crest between Willow Creek Valley and Horse Lake 524 Comment
Read comments
Jul 18 2007
  JEPS87521  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
  UC581246  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2298 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  CAS-BOT-BC291572  Crepis modocensis subsp. modocensis G. L. Stebbins; J. A. Jenkins 1937-7-10 2277 Lassen Diamond Mt. 2286 Comment
  UC581270  Crepis modocensis subsp. subacaulis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2276 Lassen Diamond Mt.; summit and e slope Comment
  CAS-BOT-BC376532  Crepis monticola G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-6 2193 Lassen Susanville, just west of the town, on Inspiration Point Comment
  JEPS36426  Crepis monticola W. L. Jepson 1910-6-10 4108 Lassen King Creek 1524 Comment
  UC76004  Crepis monticola Milo S. Baker July, 1894 Lassen near Bieber; Big Valley, Vicker's Ranch Comment
  UC1136842  Crepis occidentalis George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 Comment
  UC31338  Crepis occidentalis M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mts.; s side Comment
  UC540880  Crepis occidentalis David D. Keck and J. Clausen 1935-6-25 3759 Lassen Susanville; just w of town 1340 Comment
  UC581194  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2303 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC581198  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-7 2197 Lassen Inspiration Point Susanville (just w of town) Comment
  UC773984  Crepis occidentalis L. R. Short and Wm. Gansberg 1936-7-7 S- 476 Lassen Burgess Spring Experiment Station Lassen <National> Forest 1764 Comment
  RSA647829  Crepis occidentalis Marion P. Harthill 1971-6-21 209 Lassen Noble Emigrant Trail Monument, Susanville Comment
  UC581289  Crepis occidentalis subsp. occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1748 Lassen nw-facing slope of ridge e Red Rock 1600 Comment
  CAS-BOT-BC290821  Crepis occidentalis subsp. pumila G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-15 2362 A Lassen In Big Valley 2 miles west of Adin 1060 Comment
  CAS-BOT-BC290823  Crepis occidentalis subsp. pumila Elmer I. Applegate 1934-5-4 8915 Lassen South of Secret Valley Comment
  POM203850  Crepis occidentalis subsp. pumila J. T. Howell 1934-6-10 11872 Lassen Janesville Comment
  UC1542943  Crocidium multicaule G. Schoolcraft 1987-4-29 1686 Lassen Ash Valley RNA 1554 Comment
  CHSC23441  Cryptantha K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5840 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  UC1537698  Cryptantha Gordon H. True Jr. 1938-7-9 909 Lassen near Termo 1524 Comment
  CAS-BOT-BC189240  Cryptantha John Thomas Howell 1977-6-22 52403 Lassen N end of Eagle Lake 1584 Comment
  SBBG19764  Cryptantha affinis C. B. Hardham 1961-6-17 7505 Lassen Baxter Crk, S of Susanville Comment
  UC526167  Cryptantha affinis John Thomas Howell 1934-7-10 12545 Lassen Long's Well Comment
  SEINET8518912  Cryptantha ambigua R. R. Halse 2004-7-8 6616 Lassen Along State Highway 139, ca 6 miles N of Eagle Lake. 1710 Comment
  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
  SDSU20525  Cryptantha echinella Nuri Benet-Pierce, John P. Pierce 2012-7-14 526 Lassen Diamond Mountain. 2023 Comment
  UC1063944  Cryptantha echinella H. P. Hagge 1929-9-11 24 Lassen Logon Mtn. Eagle Lake Quad. 1828 Comment
  CHSC75468  Cryptantha humilis Vernon H. Oswald; Lowell Ahart 1999-6-19 9743 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  CHSC47980  Cryptantha intermedia Vernon Oswald 1986-6-15 2113 Lassen Hwy 36, 15.0 mi e of Plumas-Lassen Co. line, 3.5 mi e of Fredonyer Pass. 1508 Comment
  UC1249274  Cryptantha intermedia Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8480 Lassen 1 mi s Ravendale (40 mi ne of Susanville) 1615 Comment
  JEPS124571 Image available Cryptantha intermedia var. grandiflora 1964-7-1 67 Lassen Collected 17.6 mi. north of Susanville on highway 139 near ditch. about 4 meters on west side of road from pavement. Comment
  UCD119960  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley. Comment
  JEPS94701  Cryptantha pterocarya Vernon H. Oswald and Lowell Ahart 1998-5-22 9112 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0;.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  CHSC71075  Cryptantha pterocarya var. pterocarya Vernon H. Oswald; Lowell Ahart 1998-5-22 9112 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
  NY1111892  Cryptantha pterocarya var. pterocarya G. Schoolcraft 1982-4-29 635 Lassen Amedee Canyon 1280 Comment
  UC1587053  Cryptantha torreyana G. Schoolcraft 1991-7-30 2193 Lassen e side Widow Mountain 1889 Comment
  CHSC27582  Cryptantha watsonii N. E. Heiken 1978-6-27 54 Lassen SE end of Eagle Lake, near Eagle Lake Field Station. 1554 Comment
  RSA262506  Cuscuta approximata Lee Smith 1975-9-4 s.n. Lassen A1 Blickenstaff Farm, near Honey Lake, 3 miles south of Janesville. Comment
  JEPS124897 Image available Cuscuta pentagona Peter Schultz 1967-7-11 67 Lassen 2 miles north of Doyle. Comment
  CHSC112187  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 f 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the Crest. 1950 Comment
  RSA0049616  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the crest 1950 Comment
  UC1587038  Cynoglossum occidentale G. Schoolcraft 1991-7-30 2192 Lassen Bear <Sring> on n. side of widow Mt. 1780 Comment
  CHSC60861  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1993-6-28 5624 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. On the bed of a small branch of Pine Creek 1737 Comment
  SEINET3895836 Image available 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.; 0 1698 Comment
  UC1731161  Damasonium californicum Dean W. Taylor 1974-6-14 3714 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd. Poison Lake; Modoc Plateau 1615 Comment
  UC527  Damasonium californicum J. Burtt Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  UCD169624  Damasonium californicum R. F. Thorne; Larry E. DeBuhr 1975-8-22 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1615 Comment
  CAS-BOT-BC445519  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen Overflow of Pitt River, 1 mile west of Bieber. Comment
  POM260301  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UCD21047  Damasonium californicum E. Bortiri 2002-7-19 WFC 83 Lassen Bear Valley Reservoir, Rd 35N08 to Long Valley from Hwy 44, Lassen Co. Comment
  UC53341  Danthonia californica M. S. Baker and Frank Nutting 1894-7-2 Lassen Pine Creek Comment
  UC506937  Danthonia californica var. americana George A. Fischer and Irwin H. Johnson 1933-7-12 F 236 Lassen Patterson Flat Lassen National Forest 1737 Comment
  UCD60727  Danthonia californica var. americana F. C. Raney 1966-6-25 s. n. Lassen Harvey Valley, Lassen National Forest. Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
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Jul 11 2013
  CAS-BOT-BC192327  Danthonia unispicata Parkison 1916-6-10 15 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  UC1567411  Deinandra lobbii G. Schoolcraft 1989-7-24 1997 Lassen w Hayden Hill Mine (along road); Susanville 1737 Comment
  CAS-BOT-BC291777  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  RSA0005299  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  HSC79826  Delphinium depauperatum William Rothstrom 1975-6-9 Lassen Near Day, 1.0 mi. E of large cinder pit mine 1280 Comment
  CAS-BOT-BC9946  Delphinium nudicaule Mrs. Baldwin 1928-5-10 N. S. Lassen Coyote Flat. Comment
  UC1143008  Delphinium nudicaule August L. Hormay 1934-5-11 Lassen 4 mi nw Hall's Flat; Lassen National Forest 1676 Comment
  CAS-BOT-BC116054  Delphinium nuttallianum Elmer Ivan Applegate 1929-6-21 5780 Lassen Kelley's Camp, Warner Valley, Mt. Lassen region Comment
  JEPS107808  Delphinium nuttallianum Lowell Ahart, John Dittes 2005-6-2 11955 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
  RSA716264  Delphinium nuttallianum L. Ahart 2005-6-2 11955 Lassen Along poor dirt road, 1 mile E of Anderson Ranch home, Long Valley, 4.5 miles air N of the intersection of Scott Road and Hwy 70, 6 miles NW of Hallelujah jct. 1426 Comment
  CAS-BOT-BC116050  Delphinium nuttallianum Mrs. E. C. Sutliffe 1957-7-21 863 Lassen Drakesbad, Lassen Volcanic Park Comment
  HSC27055  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  OBI75897  Deschampsia cespitosa Anthony Baniaga 2011-8-17 508 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1978 Comment
  CAS-BOT-BC194259  Deschampsia cespitosa subsp. cespitosa Ray Hanson 1954-8-23 s.n. Lassen Near Jackey Lake 2112 Comment
  CAS-BOT-BC194262  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1959-9-23 34888 Lassen Juniper Lake north end, Lassen Park 2057 Comment
  HSC95293  Deschampsia cespitosa subsp. cespitosa Gordon Leppig, Tony LaBanca 1997-6-28 511 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA126933  Deschampsia cespitosa subsp. cespitosa G. A. Fischer, I. H. Johnson 1933-7-14 F- 244 Lassen Patterson Flat 1738 Comment
  UC60239  Deschampsia cespitosa subsp. cespitosa M. S. Baker and F. Nutting July 1894 Lassen Eagle Lake 1524 Comment
  CAS-BOT-BC192740  Deschampsia danthonioides A. A. Beetle 1941-6-28 2799 Lassen 10 miles west of Chester Comment
  CAS-BOT-BC192744  Deschampsia danthonioides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16328 Lassen Along southern shore of Eagle Lake Comment
  UC1024890  Deschampsia danthonioides Leo Whitney 1935-5-27 3124 Lassen Bieber Comment
  UCD62516  Deschampsia danthonioides L. Whitney 1935-5-27 3124 Lassen Bieber. Comment
  CAS-BOT-BC201812  Deschampsia elongata Clare B. Hardham 1971-8-22 18375 Lassen Diamond Mountain 2346 Comment
  POM313167  Deschampsia elongata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline 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
  UCD63522  Deschampsia elongata Malcolm A. Knobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles N of Madeline. Comment
  POM203960  Descurainia incana subsp. incisa J. T. Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  UC1143009  Descurainia richardsonii August L. Hormay 1934-5-11 Lassen 2.5 mi nw Hall's Flat; Lassen National Forest 1676 Comment
  CAS-BOT-BC43486  Descurainia sophia James Jokerst 1983-5-31 1790 Lassen Near Madeline Plains. 1583 Comment
  CHSC99284  Descurainia sophia Lowell Ahart; John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC43484  Descurainia sophia Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16334 Lassen 13.5 miles east of Susanville. Comment
  CAS-BOT-BC299811  Dieteria canescens var. canescens Mrs. H. C. Cantelow 1940-10-5 s.n. Lassen About 1 1/2 mi. N.W. of Johnstonville, east of Sierra Nevada Mts. Comment
  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
  CHSC98341  Dieteria canescens var. shastensis B. Castro; L. P. Janeway 2005-7-10 1504 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  JEPS30487  Dieteria canescens var. shastensis Peter H. Raven with Otto T. Solbrig 1958-6-15 13244 Lassen 5.7 mi w Westwood (on State Highway 36) Comment
  JEPS87533  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  UC86846  Dieteria canescens var. shastensis T. S. Brandegee Lassen Comment
  CAS-BOT-BC153679  Diplacus mephiticus H. D. Ripley; R. C. Barneby 1943-6-13 5698 Lassen South of Milford 1569 Comment
  CAS-BOT-BC153682  Diplacus mephiticus Margaret Williams; Steven Williams 1974-7-26 74 - L - 35 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC35128  Diplacus mephiticus N. E. Heiken 1978-6-27 53 Lassen SE side of Eagle L. 1554 Comment
  SBBG22269  Diplacus mephiticus C. B. Hardham 1961-6-16 Lassen Gold Run Crk, S of Susanville Comment
  CAS-BOT-BC151428  Diplacus nanus Doris Kildale Gillespie 1930-5-12 9354 Lassen Between Susanville and Leavitt Lake 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
  UCD64387  Distichlis spicata A. A. Beetle 1941-6-28 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  SACT001016  Distichlis spicata var. stricta Verne Grant, Irving Schneider 1947-9-5 Lassen Rhizomatous, northwest shore of Eagle Lake Comment
  SEINET10929826  Distichlis spicata var. stricta Alan A. Beetle 1941-6-28 Beetle 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak, open meadow. Assoc. Stipa pulchra, Hordeum, Koeleria cristata. Comment
  UC444833  Dodecatheon alpinum Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  UC1951073  Dodecatheon conjugens Debra Valov 2009-4-25 2009018 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC1951077  Dodecatheon conjugens Debra Valov 2009-4-25 2009014 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC6281  Dodecatheon pulchellum B. Anthony 1967-7-14 277 Lassen One mi e of Silver Lake. 1950 Comment
  CHSC12415  Downingia bacigalupii Anne Linda Brisk 1969-6-26 30 Lassen Growing in Papoose Meadow, 13.5 mi SW of ELBS. 1658 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
  JEPS124625 Image available Downingia bacigalupii Laurel Loeblich 1964-7-1 65 Lassen Collected 17.6 mi. North of Susanville on Highway 1 in ditch on west side of road about 2 meters from road. Comment
  RSA505399  Downingia bacigalupii Rimo Bacigalupi 1957-6-28 5999 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline. 1616 Comment
  CHSC30606  Downingia bicornuta T. M. Lane 1975-6-23 28 Lassen 50 m n of spring headwaters of Willow Cr; 3.2 km ese of Eagle Lake Field Station; 22.4 km n of Susanville. 1589 Comment
  UCD149940  Downingia bicornuta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CHSC60887  Downingia bicornuta var. bicornuta Vernon H. Oswald; Lowell Ahart 1993-7-8 5649 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  UC1101473  Downingia bicornuta var. bicornuta Herbert L. Mason and Verne Grant 1947-7-9 13291 Lassen 5 mi e Bieber Comment
  JEPS108502  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 221 -95 Lassen E edge of Poison Lake. N on Pittville Rd. off of Rt. 44. E of Shasta/Lassen county line. Comment
  JEPS108509  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 223 -95 Lassen Large vernal pool W of Champs Flat (W of Eagle Lake). Corner of 33N56Y and 33N06. Comment
  JEPS120848  Downingia cuspidata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18727 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS19680  Downingia insignis Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 6000 Lassen 3.1 mi s Madeline (ditches along U.S. Highway 395); Madeline Plains 1615 Comment
  RSA298985  Downingia insignis Helen-Mar Wheeler 1952-7-11 s.n. Lassen South of Madeline. Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  HSC63957  Downingia insignis Teresa Prendusi 1980-7-1 1124 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  RSA574802  Downingia insignis R. R. Halse 1975-6-20 1200 Lassen Along county road 502, 2.3 miles N of Ravendale. 1614 Comment
  SEINET10702760  Downingia insignis David B. Dunn 1956-7-3 Dunn 11924 Lassen Alkaline sink by roadside, extra runoff from Hwy. 395. 11 mi. S of Madeline. Comment
  CHSC23440  Downingia laeta K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5805 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  POM222067  Downingia pulchella W. C. Merrill 1892-08 s.n. Lassen Bieber. Comment
  JEPS97330  Drosera anglica Vernon H. Oswald 1995-8-21 7216 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  CAS-BOT-BC401538  Drosera rotundifolia G. Schoolcraft 1997-8-5 2648 Lassen Along Robbers Creek near Robbers Spring 1798 Comment
  UC1028268  Drymocallis lactea var. austiniae A. Simontacchi 1940-6-6 825 Lassen 9.3 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad. Comment
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Oct 7 2008
  CHSC112411  Elatine Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18752 A Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116195  Elatine Lowell Ahart; John Dittes 2015-7-13 20295 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  RSA772751  Elatine californica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47212 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC113619  Eleocharis acicularis George Wilson Gillett 1957-9-4 1128 Lassen Widow Lake. East margin of lower lake, near inlet; in drying mud. 2072 Comment
  UC1567360  Eleocharis bella G. Schoolcraft 1989-7-18 1982 Lassen S of Clarks Valley Road near Bucks Spring 1874 Comment
  CAS-BOT-BC113563  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. Comment
  CHSC112798  Eleocharis macrostachya Lowell Ahart; John Dittes 2013-7-22 18848 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121268  Eleocharis macrostachya Lowell Ahart 2013-7-22 18848 Lassen W margin of duck field, about 30 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC190417  Eleocharis macrostachya M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow, Dixey Valley Comment
  UC1142965  Eleocharis quinqueflora A. L. Hormay 1941-6-25 19 Lassen Burgess Spring Lassen National Forest 1676 Comment
  UC1776676  Eleocharis quinqueflora G. Schoolcraft 1995-5-23 2488 Lassen Three Springs 1554 Comment
  JEPS103218  Eleocharis quinqueflora G. Schoolcraft 1995-5-22 2483 Lassen Morgan Spring N of Skedaddle Mountains 1524 Comment
  UCD62907  Elymus X saundersii Beecher Crampton 1954-7-5 2061 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  SD71040  Elymus caput-medusae Leo E. Wheeler 1960-6-15 Lassen edge of valley plain, ca. 4 mi. se. of Susanville Comment
  CHSC60798  Elymus cinereus Vernon H. Oswald; Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  SEINET10521741  Elymus cinereus Paul Gallian, David B. Dunn 1971-6-2 Gallian 490 Lassen 5 mi. S. of Milford near Honey Lake on U.S. Hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - Jeffrey Pine on mountain range to west at approximately the same altitude. 1250 Comment
  SEINET10527886  Elymus elymoides Paul Gallian, David B. Dunn 1971-6-2 Gallian 515 Lassen 6 mi N of Hallelujah Jct on US hwy 395, in Artemesia tridentata, Jeffery pine, along high ridge & in sandy wash. 1402 Comment
  UC1133050  Elymus elymoides subsp. elymoides A. Simontacchi 1940-6-13 858 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1136930  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC1136931  Elymus elymoides subsp. elymoides L. R. Short and J. Warren 1936-6-29 S- 461 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1820 Comment
  UC773975  Elymus elymoides subsp. elymoides L. R. Short and Wm. Gansberg 1936-7-9 S- 477 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1783 Comment
  CHSC118823  Elymus elymoides var. californicus L. P. Janeway; B Castro 2015-6-5 11762 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  HSC22391  Elymus elymoides var. californicus D. E. Anderson 1969-7-5 4996 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UC7793970  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
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Aug 1 2007
  SEINET10554356  Elymus glaucus R. Ondricek 1978-7-22 Ondricek 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. T31N, R11E, sw quarter of Sec. 8, Antelope Peak Quadrangle. 1585 Comment
  CAS-BOT-BC206732  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51977 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  UCD62368  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen On Gold Run Creek southwest of Susanville. 1386 Comment
  JEPS121262  Elymus repens Lowell Ahart, John Dittes 2013-7-23 18894 Lassen About 20 feet SW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD62565  Elymus repens J. V. Langdon 1957-7-1 Lassen Susanville. Comment
  UCR7791  Elymus salinus Marilyn Malin 1968-7-10 260 Lassen Great Basin, south side of Hwy 395 at the Hurlong turnoff 1235 Comment
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Mar 9 2010
  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
  UC1037145  Elymus trachycaulus Leo Whitney 1935-6-24 3306 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC60832  Elymus trachycaulus M. S. Baker and Frank Nutting 1894-7-5 Lassen mts. s Dixey Valley Comment
  UC70687  Elymus trachycaulus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CAS-BOT-BC204359  Elymus trachycaulus subsp. trachycaulus G. Schoolcraft 1994-8-2 2396 Lassen About 2 miles NW of Boot Lake 2438 Comment
  CHSC29894  Elymus trachycaulus subsp. trachycaulus Robin L. Ondricek 1978-8-2 113 Lassen North edge of dam at Murrers Upper Meadow. 1548 Comment
  UCD62671  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1929-5-30 Lassen Forest Office in front of Susanville. Comment
  SEINET12755568  Elymus triticoides F. H. Hillman 1897-7-12 s.n. Lassen Chat. Comment
  SEINET6657093  Elymus triticoides Leo Whitney 1934-8-4 2128 Lassen Sheepshead, ca. 10 miles northwest of north end of Eagle Lake, Lassen National Forest.; 0 1890 Comment
  CHSC71123  Ephedra viridis Vernon H. Oswald; Lowell Ahart 1998-5-22 9103 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  HSC1311  Ephedra viridis L. H. Myers 1963-4-14 35 Lassen 2 mi. S of Hwy. 395, Doyle 1372 Comment
  UCR67446  Ephedra viridis George K. Helmkamp 1990-9-23 B- 17 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  SEINET10738966  Epilobium angustifolium subsp. circumvagum Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 838 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
  CHSC14185  Epilobium brachycarpum M. S. Taylor 1974-7-10 279 Lassen Ca. 50 ft w of road to Gallatin Beach, ca. 5 mi s of Gallatin Beach on Eagle Lake, ca. 10 mi nw of Susanville. 1524 Comment
  CHSC25092  Epilobium brachycarpum K. R. Stern 1967-7-1 2441 Lassen Murrer Meadow Road, ca. 2.5 mi. SE of Eagle Lake Biology Station. 1554 Comment
  JEPS121253  Epilobium brachycarpum Lowell Ahart 2013-7-22 18845 Lassen W margin of duck field, about 10 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC773909  Epilobium brachycarpum L. R. Short and Wm. Gansberg 1936-8-11 S- 493 Lassen Burgess Spring Experiment Range Lassen National Forest 1746 Comment
  RSA0105583  Epilobium campestre Lowell Ahart, John Dittes 2013-7-22 18850 Lassen About 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC764398  Epilobium campestre R. F. Hoover 1940-9-21 4602 Lassen 4 mi w Susanville Comment
  CDA20353  Epilobium densiflorum H. Leach August 1949 s.n. Lassen Modoc Plateau; Madeline Plain. 0 Comment
  NY1000301  Epilobium glaberrimum var. fastigiatum C. B. Hardham 1969-8-28 17438 Lassen Granitic slope west of Janesville Comment
  JEPS87408  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
  JEPS127276  Epilobium pallidum Lowell Ahart, John Dittes 2016-7-13 21127 Lassen 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS87409  Epilobium pallidum Vernon H. Oswald and Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd (33N18) 1.4 mi ssw Pittville Rd (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, bed of vernal pool on e side of rd) 1694 Comment
  JEPS127270  Epilobium torreyi Lowell Ahart, John Dittes 2016-7-13 21126 Lassen 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CAS-BOT-BC57305  Equisetum laevigatum Clare B. Hardham 1969-8-28 17458 Lassen west of Janesville Comment
  CAS-BOT-BC174119  Eremogone aculeata B. J. Hammerly 1941-6-20 50 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  CAS-BOT-BC174121  Eremogone aculeata M. S. Taylor; B. Hammond 1982-8-27 5056 A Lassen On ridge between Crystal and Adams Peaks, Diamond Mts, ca. 4 air mi sw of Constantia 2225 Comment
  CAS-BOT-BC174189  Eremogone congesta var. congesta Mrs. R. M. Austin; Mrs. Bruce 1898-6-1 2156 Lassen [Madaline] Madeline Plains Comment
  CAS-BOT-BC174203  Eremogone congesta var. congesta Louella Bass 1973-6-14 103 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC174201  Eremogone congesta var. congesta Clarence R. Quick 1964-7-29 64 -88 Lassen Blacks Mt. Experimental Forest 1798 Comment
  SEINET12875575 Image available Eremogone congesta var. subcongesta John Thomas Howell 1977-1 52401 Lassen North end of Eagle Lake 1585 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
  CAS-BOT-BC159993  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen North of Balls Canyon on U. S. Highway #395 Comment
  CAS-BOT-BC159996  Eremothera boothii subsp. alyssoides P. Monnet 1913-7-4 7951 Lassen Hot Springs Peak, S.E. of Lassen County 1800 Comment
  CHSC27718  Eremothera boothii subsp. alyssoides Robert A. Schlising 1978-7-2 3308 Lassen SE of Horse Lake, 15.5 mi SW of jct Hwy 395 and Horse L. Road, along the latter. 1545 Comment
  UC1483823  Eremothera minor G. Schoolcraft 1980-6-11 267 Lassen w Wendel 1219 Comment
  CHSC34596  Eriastrum signatum Robert A. Schlising 1978-7-1 3298 Lassen E of Eagle Lake, NE of Eagle L. Field Station. On lava flow from Black Mt. 1584 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
  JEPS69075  Eriastrum signatum W. L. Jepson 1918-8-2 7757 Lassen Beckwith Pass 1463 Comment
  RSA0124148  Eriastrum signatum R. R. Halse 2004-7-21 6669 Lassen At junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford. 1274 Comment
  CAS-BOT-BC515175  Eriastrum signatum Rimo Bacigalupi; G. T. Robbins 1955-7-21 5417 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  RSA0124149  Eriastrum signatum Christopher Davidson 1975-6-7 2763 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS124583 Image available Eriastrum sparsiflorum J. Yamanaka 1965-7-12 123 Lassen Highway 395, 2.6 miles No. of Milford Habitat. Comment
  UC1136849  Ericameria bloomeri L. R. Short and J. Warren 1936-8-17 S- 497 Lassen Burgess Spr. Exp. Range Lassen Forest 1767 Comment
  CHSC12420  Ericameria nauseosa Anne Linda Brisk 1969-6-19 3 Lassen 1/4 mi NE ELBS. 1554 Comment
  CHSC23484  Ericameria nauseosa Wayne O. Baum 1971-7-29 71 -57 Lassen Slope of Gallatin Peak. 1981 Comment
  CHSC30574  Ericameria nauseosa Sori H. Shad 1970-6-19 37 Lassen Found north of E.L.B.S. in front of the Library. 1524 Comment
  CAS-BOT-BC298179  Ericameria nauseosa var. oreophila John Thomas Howell 1924-8-13 s.n. Lassen Near Doyle Comment
  CAS-BOT-BC298182  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  CHSC65293  Ericameria nauseosa var. oreophila Vernon H. Oswald; Lowell Ahart 1995-8-14 7181 Lassen Modoc Plateau. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville. Along this section of highway. 1359 Comment
  UC527346  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 Lassen 3/4 mi e Termo 1645 Comment
  CHSC66849  Ericameria nauseosa var. speciosa Vernon H. Oswald 1996-10-3 8295 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. On the edge of highway at Secret Creek. 1402 Comment
  UC1483819  Ericameria nauseosa var. speciosa G. Schoolcraft 1980-10-8 359 Lassen w side of Painters Flat 1716 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
  CHSC93247  Erigeron aphanactis var. aphanactis John Dittes; Scott Chamberlain 2004-6-28 1008 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  UC1561814  Erigeron aphanactis var. aphanactis Barbara Ertter with Gary Schoolcraft 1987-6-16 7176 Lassen on ne side Honey Lake (e of road over saddle on w side of range); Skeedaddle Mountains 1645 Comment
  CHSC112184  Erigeron aphanactis var. congestus Dean Wm. Taylor 2012-6-7 21229 Lassen Flora of the Modoc Plateau. Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139. 1635 Comment
  CAS-BOT-BC33472  Erigeron barbellulatus Milo Samuel Baker; Franklin P. Nutting 1895-7-30 s.n. Lassen Silver Lake Comment
  JEPS94521  Erigeron bloomeri Vernon H. Oswald and Lowell Ahart 1997-5-27 8486 Lassen 38.2 mi n of Susanville (e side of Highway 139 at a small farm pond,, 7.4 mi n of Eagle Lake Road); Highway 139 1627 Comment
  SEINET10617398  Erigeron bloomeri Billy Joe Cox 1971-6-2 Cox 2994 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon Pine, Jeffrey Pine along high ridge & in sandy wash. 1402 Comment
  CHSC92714  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2005-7-10 8486 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  GMDRC6952  Erigeron bloomeri var. bloomeri J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31427 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  JEPS80680  Erigeron bloomeri var. bloomeri L. R. Heckard and T. I. Chuang 1981-6-10 5532 Lassen North Eagle Lake Campground Eagle Lake (nw corner of lake) 1524 Comment
  HSC63773  Erigeron bloomeri var. bloomeri Teresa Prendusi 1980-5-22 1128 Lassen Shafer Mtn, near top 1982 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
  SEINET11826499  Erigeron bloomeri var. bloomeri Unknown 1967-1 545 Lassen 10 yds off S side road Comment
  CAS-BOT-BC297146  Erigeron concinnus var. concinnus John Thomas Howell 1934-7-6 12439 Lassen Harvey Valley Comment
  CAS-BOT-BC295979  Erigeron divergens Clare B. Hardham 1969-8-28 17421 Lassen West of Janesville, Sierra Nevada 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
  CHSC91207  Erigeron divergens Lowell Ahart; John Dittes 2005-6-2 11924 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
  JEPS127271  Erigeron divergens Lowell Ahart, John Dittes 2016-7-13 21106 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS97306  Erigeron divergens Vernon H. Oswald and L. Ahart 1995-8-14 7193 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
  UC1924196  Erigeron divergens Debra Valov 2005-8-20 2005234 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC296846  Erigeron divergens John Thomas Howell 1973-7-10 49773 Lassen Near Westwood, Sierra Nevada 1554 Comment
  RSA339143  Erigeron divergens Margaret J. Williams 1984-6-16 84- 31 -1 Lassen Doyle Grade, County Hwy. 331, 2.6 miles W of Doyle. Comment
  SEINET8667206 Image available Erigeron divergens M. J. Williams 1984-6-16 84- 31 -1 Lassen Doyle grade, County Hwy 331, 2.6 mi W of Doyle Comment
  CHSC60816  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. 1728 Comment
  RSA0049606  Erigeron eatonii var. plantagineus Dean Wm. Taylor 2012-6-6 21226 Lassen ca. 5 air miles West of Susanville, site is 1 mile due north of the junction of Highway 44 and Highway 36 1877 Comment
  UCD131889  Erigeron eatonii var. plantagineus Jack Major 1966-6-24 s.n. Lassen Long Valley, 3 miles airline southwest of Patterson Guard Station, northeastern county. 2087 Comment
  UC584370  Erigeron elegantulus E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1787 Lassen roadside about 5 mi n Termo 1371 Comment
  POM32996  Erigeron filifolius Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC87694  Erigeron filifolius T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UCR244069  Erigeron filifolius var. filifolius Jim Andre, G. L. Clifton 1993-6-9 19695 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC295180  Erigeron inornatus Clarence R. Quick 1964-8-5 64 -97 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CAS-BOT-BC295184  Erigeron inornatus John Thomas Howell; Gordon H. True 1973-8-1 50157 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  UC584244  Erigeron lassenianus var. lassenianus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2264 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties) Comment
  CAS-BOT-BC295472  Erigeron lassenianus var. lassenianus Parkison 1916-6-21 40 Lassen Lassen National Forest. Near Patterson Cabin 1706 Comment
  JEPS41565  Erigeron linearis F. W. Peirson 1926-6-24 6855 Lassen Madeline Plain Comment
  RSA0049610  Erigeron linearis Dean Wm. Taylor 2012-6-7 21231 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  RSA713117  Erigeron linearis L. P. Janeway, B. Castro 2005-7-10 8485 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge. 1993 Comment
  CAS-BOT-BC295959  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  RSA768024  Erigeron pumilus subsp. intermedius L. Ahart, John Dittes 2010-7-31 16986 Lassen About 3300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  CHSC89730  Erigeron pumilus var. intermedius L. P. Janeway 2004-6-26 8163 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  JEPS89669  Erigeron pumilus var. intermedius Dean Wm. Taylor with Glenn Clifton 1990-6-12 10883 Lassen Ash Valley along Ash Creek at the crossing of Road 527 (Forest Road 39N08), Modoc Plateau Ash Creek; Modoc Plateau, Ash Valley, Ash Creek 1554 Comment
  UC1118181  Erigeron pumilus var. intermedius A. Simontacchi 1940-6-30 906 Lassen 2.2 mi ene of Ebey Lake; Halls Flat Quad. 1699 Comment
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UC468919  Erigeron pumilus var. intermedius Franklin P. Nutting Lassen Big Valley Northern California, Big Valley Comment
  UC506996  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley 1700 Comment
  UC762677  Eriogonum baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville Comment
  SEINET3836451 Image available Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-2 7772 Lassen Beckwith Pass 1463 Comment
  NY399607  Eriogonum baileyi var. baileyi E. K. Balls 1952-10-10 18139 Lassen 5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas 1280.2 Comment
  CAS-BOT-BC244039  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen Between Shaffer Mt. and Warren Peak Comment
  NY242909  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen Between Secret Valley and Ravendale. U.S. Highway #395. 1524.0 Comment
  CAS-BOT-BC241831  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen On U. S. Highway #395, south of Ravendale Comment
  CAS-BOT-BC241833  Eriogonum caespitosum Elmer I. Applegate 1897-6-3 894 Lassen South of Madeline Plains Comment
  CAS-BOT-BC241836  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen Between Secret Valley and Ravendale, on U. S. Highway #395 1524 Comment
  RSA616540  Eriogonum cernuum var. cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border Comment
  RSA176183  Eriogonum collinum Noel Holmgren, James L. Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale Comment
  RSA236684  Eriogonum collinum A. J. Cronquist, A. H. Holmgren 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles NE of Susanville 1616 Comment
  SEINET5328978  Eriogonum collinum N. H. Holmgren, James Lauritz Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 iles south of Ravendale, Comment
  UCD99875  Eriogonum douglasii John Thomas Howell; Gordon H. True, Wayne Dakan 1974-7-30 50662 Lassen summit ridge of Diamond Mt. 2286 Comment
  CAS-BOT-BC246498  Eriogonum douglasii var. meridionale H. D. Ripley; R. C. Barneby 1943-6-13 5712 Lassen South of Johnstonville 1325 Comment
  SEINET5330338  Eriogonum inflatum var. inflatum F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  NY281810  Eriogonum maculatum N. H. Holmgren 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395. Comment
  OBI76908  Eriogonum marifolium Anthony Baniaga 2011-7-9 438 Lassen Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE 1723 Comment
  NY572524  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-7-20 807 Lassen Lower slopes of Wagner Canyon 1402.1 Comment
  NY803459  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-8 2947 Lassen About 1 mile south of Constantia, CA west of Highway 395 1421 Comment
  JEPS127634  Eriogonum nudum Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -154 Lassen Likely Mtn. on road 171. Collecting site is a 100-300 m before reaching the Forest Service Boundary. Comment
  JEPS128413  Eriogonum nudum Catherine Bauer with Ellen Bauer Benson 2017-8-16 19 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CHSC105258  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-7-31 16983 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS117570  Eriogonum nudum var. nudum Lowell Ahart, John Dittes 2010-7-31 16983 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  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
  CHSC27645  Eriogonum nudum var. pubiflorum Jerry Snodgrass 1978-7-10 47 Lassen Coleman L., SE of Eagle L. 1962 Comment
  CHSC67061  Eriogonum nudum var. pubiflorum Willis Ball 1969-6-27 50 Lassen Found about 50 yds. S. of Gallatin Beach. Growing beside Gallatin Beach Parking Lot. 1561 Comment
  JEPS126464  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-27 CA 350 -070 Lassen North on Highway 139 to Antelope Grade. Comment
  UC1137674  Eriogonum nudum var. pubiflorum L. R. Short and Wm. Gansberg 1936-7-3 S- 474 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  CAS-BOT-BC269925  Eriogonum nudum var. pubiflorum Barrett Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  RSA0030655  Eriogonum nudum var. pubiflorum Anthony Baniaga 2011-8-3 484 Lassen Lassen National Forest. Along Highway 44, S of 31N21 1800 Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  SEINET5330981  Eriogonum nummulare A. Tiehm 1978-1 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan. About 1.7 miles W of the Nevada line 1524 Comment
  SBBG65173  Eriogonum ovalifolium S. W. Hutchinson -Jun-1925 Lassen Eagle Lake to Caribou Lake 1828 Comment
  CHSC64886  Eriogonum ovalifolium var. ovalifolium Vernon H. Oswald; Lowell Ahart 1995-6-19 6889 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. On a slope on the s side of the road at Mud Flat. 1350 Comment
  UC1523800  Eriogonum prociduum Gary Schoolcraft 1982-6-29 745 Lassen Ash Valley 1554 Comment
  RSA713122  Eriogonum spergulinum var. reddingianum L. P. Janeway, B. Castro 2005-7-10 8483 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 and 28N02) and Road 28N01. 1859 Comment
  POM105202  Eriogonum sphaerocephalum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC57304  Eriogonum sphaerocephalum var. halimioides Mary Meyer 1980-7-9 Lassen One mile northwest of Horse Camp Spring. Meadow. 1706 Comment
  CHSC64846  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1995-6-26 6927 Lassen Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  UC1924212  Eriogonum sphaerocephalum var. halimioides Debra Valov 2004-6-9 2004271 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  CHSC6225  Eriogonum sphaerocephalum var. sphaerocephalum A. Santos 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer summit. 2319 Comment
  RSA0029191  Eriogonum strictum John F. Emmel 1997-6-8 1491 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  CAS-BOT-BC262742  Eriogonum strictum var. anserinum H. D. Ripley; R. C. Barneby 1944-5-30 5965 Lassen Secret Valley 1554 Comment
  CHSC106067  Eriogonum strictum var. anserinum Lowell Ahart; John Dittes 2010-7-31 16989 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
  CHSC13455  Eriogonum strictum var. anserinum J. Pitts 1972-6-22 248 Lassen 70 yds. n of Eagle Lake Biology Station. Comment
  CHSC93663  Eriogonum strictum var. anserinum Lowell Ahart; John Dittes 2005-6-2 11984 Lassen North side of the poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.8 miles (air) northwest of Hallelujah Junction. 1430 Comment
  JEPS117571  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2010-7-31 16989 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
  UC85813  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  CAS-BOT-BC267816  Eriogonum umbellatum var. covillei Annie M. Alexander; Louise Kellogg 1942-8-21 3356 Lassen Below Golden Trout Resort, Cottonwood Creek, Cottonwood Lakes, southwest of Lone Pine, Sierra Nevada Comment
  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
  UC725728  Eriogonum umbellatum var. modocense A. A. Heller 1938-6-23 15202 Lassen w Susanville Comment
  UCD101457  Eriogonum umbellatum var. modocense John Thomas Howell 1973-7-10 49772 Lassen near Westwood. 1554 Comment
  HSC17447  Eriogonum umbellatum var. modocense J. Wendell Howe 1934-7-9 1295 Lassen Cinder Cone, Lassen NP Comment
  CHSC93680  Eriogonum umbellatum var. nevadense Lowell Ahart; John Dittes 2005-6-2 11980 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
  RSA65960  Eriogonum umbellatum var. nevadense F. W. Peirson 1926-6-24 6848 Lassen On Madeline Plain. Comment
  UC1137291  Eriogonum umbellatum var. nevadense K. E. Bradshaw 1939-5-27 237 Lassen Black Mt. Experimental Forest Plot 39-1 Lassen National Forest, Halls Flat Quadrangle 1752 Comment
  UC85974  Eriogonum umbellatum var. nevadense T. S. Brandegee 1892-6-25 Lassen Honey Lake Comment
  POM105077  Eriogonum umbellatum var. polyanthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC30597  Eriogonum vimineum Marc Held 1972-6-22 5 Lassen Approx. 500 yrds. north-east of E. L. B. S. 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
  JEPS127353  Eriogonum vimineum Lowell Ahart, John Dittes 2016-7-13 21132 Lassen 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  RSA125290  Eriogonum vimineum Peter H. Raven, Otto T. Solbrig 1958-6-17 13272 Lassen Along Hwy 395, 19.0 miles south of Ravendale Comment
  SEINET11933856  Eriogonum vimineum N. H. Holmgren, Holmgren, P. K. 1980-1 9493 Lassen Rye Patch Canyon Rd, 3.4 km (2.1m) E of US Hwy 395, 14.5 km (9mi) airline distance SE of Ravendale 1700 Comment
  HSC97608  Eriophorum gracile Vernon H. Oswald, L. Ahart 1996-6-24 7888 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1) and 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 Comment
  CAS-BOT-BC300341  Eriophyllum Ella Dales Cantelow 1941-5-22 s.n. Lassen N. of Litchfield. U.S. Hy 395. Lava Country 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
  UC1393123  Eriophyllum lanatum var. achilleoides John L. Strother 1970-5-23 956 Lassen about 6 mi n of Honey Lake 1280 Comment
  UCR244036  Eriophyllum lanatum var. achilleoides Jim Andre 1993-6-5 19706 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  OBI75879  Eriophyllum lanatum var. croceum Anthony Baniaga 2011-6-29 402 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW 1500 Comment
  CAS-BOT-BC301390  Eriophyllum lanatum var. grandiflorum R. Carter 1967-6-23 538 Lassen Along rd to Murrer's Meadow 1584 Comment
  CAS-BOT-BC301528  Eriophyllum lanatum var. integrifolium Ralph K. Gierisch 1968-7-11 3355 Lassen Lassen National Forest. Highway 44 1737 Comment
  SEINET3132728  Eriophyllum lanatum var. integrifolium J. L. Strother 1970-5-23 956 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  UC90245  Eriophyllum lanatum var. integrifolium T. S. Brandegee 1892-7-26 Lassen Milford Comment
  JEPS107866  Erodium cicutarium Lowell Ahart, John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC1487305  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UC1508836  Eryngium alismifolium Gary Schoolcraft 1984-7-31 1329 Lassen ca. 1 mi. n. Ravendale Fire Station 1615 Comment
  UC21010  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3374 Lassen Honey Lake Valley Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  SEINET8340800  Erythranthe floribunda Unknown 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) northweast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC106222  Erythranthe guttata Arthur C. Barrett 1915-6-3 14 Lassen Laufman Ranger Station. 1463 Comment
  CAS-BOT-BC153609  Erythranthe moniliformis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49410 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC66268  Erythranthe pulsiferae Vernon H. Oswald; Lowell Ahart 1996-6-24 7865 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In open woods on the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  CHSC60775  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1993-6-14 5523 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
  CAS-BOT-BC403146  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-16 8344 Lassen Janesville Comment
  UC1561401  Eschscholzia californica Barbara Ertter 1987-7-24 7297 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  JEPS124751 Image available Euphorbia serpillifolia L. Fleckenstein 1967-7-12 71 Lassen Collected 14.9 mi. south-east of Adin on Hwy 139. Comment
  UCD142787  Euphorbia serpillifolia J. M. Tucker 1950-7-25 1974 Lassen Road from Pittville, 35 miles northwest of Susanville. Comment
  NY1001166  Euphorbia spathulata A. Tiehm 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1387 Comment
  UC29863  Eurybia integrifolia Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  POM112027  Festuca idahoensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA0092308  Festuca idahoensis Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31434 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  RSA647539  Festuca idahoensis Marion P. Harthill 1972-6-17 822 Lassen Madeline. 1677 Comment
  UC1024704  Festuca idahoensis Leo Whitney 1933-7-10 2140 Lassen ca 25 mi w Eagle Lake (upper end); Lassen National Forest, Halls Flat 1737 Comment
  UC1024834  Festuca idahoensis Leo Whitney 1935-6-11 3224 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1026711  Festuca idahoensis Leo Whitney 1935-6-23 3295 Lassen Camp 10, Fruit Grower's Supply Company Comment
  UC60788  Festuca idahoensis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  UCD66162  Festuca occidentalis L. Whitney 1935-6-27 3337 Lassen Lassen National Forest. Camp 10, Fruit Grower's Supply Company. Comment
  CAS-BOT-BC278932  Festuca rubra John Thomas Howell 1934-7-6 12458 Lassen Harvey Valley Comment
  JEPS28299  Festuca rubra George W. Gillett 1957-7-29 947 Lassen between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  UCD66339  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  UC1130345  Floerkea proserpinacoides Robert W. Gardner 1937-6-14 G 4 Lassen Burgess Spring Experiment Range 1798 Comment
  UC1523731  Fraxinus latifolia Gary Schoolcraft 1981-7-14 508 Lassen s of Pittville; Beaver Creek Area 1158 Comment
  CHSC36488  Fritillaria atropurpurea Theresa Costa 1982-6-5 39 Lassen Along e slope Gallatin Mountain. Comment
  CAS-BOT-BC506180  Fritillaria pudica E. K. Balls 1950-5-18 14768 Lassen Ash Creek, above Ash Creek Public Camp, off road from Adin to Madeline 1615 Comment
  RSA59761  Fritillaria pudica E. K. Balls 1950-5-18 14768 Lassen Above Ash Creek Public Camp., off rd. from Adin to Madeline. 1616 Comment
  SEINET11615980  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  CDA42121  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  POM68457  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC585184  Galium multiflorum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1740 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  CHSC113000  Galium trifidum subsp. columbianum Lowell Ahart; John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC105244  Gayophytum diffusum subsp. diffusum Lowell Ahart; John Dittes 2010-7-31 17020 A Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS117576  Gayophytum heterozygum Lowell Ahart, John Dittes 2010-7-31 17025 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1122567  Gayophytum heterozygum H. P. Hagge 1929-9-12 26 Lassen Logan Mtn. Eagle Lake Quadrangle Comment
  UC1122616  Gayophytum heterozygum A. Simontacchi 1940-6-30 897 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Hall's Flat Quadrangle Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC63969  Gayophytum humile Teresa Prendusi 1980-7-1 1121 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  RSA74475  Gayophytum ramosissimum Milo S. Baker 1936-6-16 8364 Lassen About 30 miles north of Susanville Comment
  POM204159  Gayophytum ramosissimum J. T. Howell 1934-6-10 11843 Lassen Near Plumas Junction Comment
  JEPS88543  Gentiana calycosa Vernon H. Oswald and Lowell Ahart 1996-8-1 8119 Lassen Forest Rd, 28N56 (D-Line) ca. 2 mi N of Cyer Mtn. Lookout SSW of Westwood 1737 Comment
  JEPS31405  Gentiana newberryi G. S. Crew and C. S. Robinson 1927-7-15 68 Lassen Bogard Ranger Station, sw Lassen Co. Lassen Forest 1737 Comment
  UC1037290  Gentianella amarella subsp. acuta Leo Whitney 1934-7-24 1690 Lassen ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest 1737 Comment
  CHSC59088  Gentianopsis simplex Vernon H. Oswald; Lowell Ahart 1992-8-25 5186 Lassen Lassen Volcanic National Park. Grassy Creek on the S end of Snag Lake. 1851 Comment
  CHSC92757  Geranium viscosissimum L. P. Janeway 2005-7-4 8472 Lassen High Cascade Range. Gap/saddle 3.8 air km west of Harvey Mountain, at junction of Roads 35N04, 33N08, and 33N85. 1852 Comment
  JEPS61452  Geranium viscosissimum Brown and Wieslander 1922-7-24 11 Lassen Martin Springs Eagle Lake Comment
  RSA122288  Geum canescens L. R. Short, J. Warren 1936-6-23 s.n. Lassen Burgess Spring Exp Range. 1765 Comment
  CAS-BOT-BC143569  Geum triflorum Clarence Quick 1963-7-12 63 -34 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CHSC60847  Geum triflorum Vernon H. Oswald; Lowell Ahart 1993-6-28 5603 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  CHSC64851  Geum triflorum Vernon H. Oswald 1995-6-26 6943 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
  CHSC89723  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1127984  Geum triflorum K. E. Bradshaw 1939-5-27 243 Lassen Lassen National Forest, Black Mountain Experimental Forest, s end of Plot 39-4 Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1737 Comment
  RSA122289  Geum triflorum var. ciliatum K. e. Bradshaw 1939-5-27 25210 Lassen Near S end of Black Mtn EF Plot 39-4. 1738 Comment
  SBBG70512  Geum triflorum var. ciliatum E. Rockwell -Jun-1925 934 Lassen Eagle Lake 1554 Comment
  RSA0086587  Gilia Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  RSA91465  Gilia brecciarum Verne Grant 1955-6-8 9669 Lassen 3.6 mi n of Halleluja Jct. on hwy 395. 1311 Comment
  CHSC106676  Gilia inconspicua B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  JEPS94830  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-5-22 9107 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains 1371 Comment
  CHSC11771  Gilia modocensis Wayne O. Baum 1971-6-28 71 -4 Lassen S. slope of Gallatin Peak. 2042 Comment
  CAS-BOT-BC523867  Gilia modocensis Doris Kildale Gillespie 1930-5-12 9326 Lassen 2 mi N of Susanville on road to Alturas Comment
  UC1562812  Gilia salticola Barbara Ertter with Gary Schoolcraft 1987-6-16 7189 Lassen on s side Hot Springs VABM (ne side Honey Lake, Skeedaddle Mountains); Skeedaddle Mountains, s side Hot Springs VABM 2286 Comment
  JEPS96135  Glyceria borealis Vernon H. Oswald and Lowell Ahart 1996-6-24 7872 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  UC1776715  Glyceria elata G. Schoolcraft 1994-7-6 2354 Lassen About 2 miles west of Boot Lake 2072 Comment
  CHSC60922  Gratiola ebracteata Vernon H. Oswald; Lowell Ahart 1993-7-8 5650 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  CHSC64781  Grayia spinosa Vernon H. Oswald 1995-5-24 6764 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of Amedee Mtns. 1249 Comment
  HSC104131  Grayia spinosa H. Chappel, J. Goldhammer 2002-5-30 - 2 Lassen Southeast of Susanville. 1248 Comment
  UC1136429  Grayia spinosa C. W. Hanks 1934-9-25 88 Lassen near the Plumas Nat'l Forest Long Valley; Sierraville Quad., Long Valley Comment
  CHSC60757  Gymnosteris parvula Vernon H. Oswald; Lowell Ahart 1993-6-3 5485 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 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. In a meadow. 1731 Comment
  SEINET3928294  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0 1720 Comment
  UC1587098  Hackelia californica G. Schoolcraft 1991-7-30 2197 Lassen e slope of Widow Mountain 1859 Comment
  UC699734  Hackelia californica Farris Farris 1936-6-15 Lassen Eagle Lake Summit 1981 Comment
  CAS-BOT-BC231154  Hackelia cusickii G. Schoolcraft 1988-7-7 1810 Lassen About 14 air miles NE of Ravendale 1798 Comment
  CAS-BOT-BC231157  Hackelia cusickii Mrs. A S. Baldwin 1927-5-19 s.n. Lassen Lava beds Comment
  CHSC98245  Hackelia cusickii Allison Sanger 2003-6-25 Lassen Near Road 33N13 in Halls Flat, approximately 8 air miles east-northeast of Old Station. 1706 Comment
  CDA3149  Halogeton glomeratus E. E. Fix Jun 1949 Lassen Western Pacific Railroad right-of-way on Nevada-California line. Near Herlong. 0 Comment
  CHSC7712  Halogeton glomeratus Jesse Langdon 1969-5-23 8 Lassen Stacey - 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  OBI4720  Halogeton glomeratus T. C. Fuller 1962-8-28 9475 Lassen Herlong Siding, Hoeny Lake Valley Comment
  UCD98893  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  UCD98902  Halogeton glomeratus R. Tofsrud; J. M. Tucker 1950-7-26 1978 Lassen Herlong Army Ordnance Depot, southeastern Lassen County. Comment
  GMDRC7736  Helianthus cusickii J. M. Andre, G. Clifton 1993-6-1 33413 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  CHSC76090  Heliotropium curassavicum Lowell Ahart; Vernon H. Oswald 1999-9-13 8219 Lassen In a field, about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1483827  Heliotropium curassavicum G. Schoolcraft 1980-7-10 303 Lassen e. shore Eagle Lake 1554 Comment
  JEPS107809  Hemizonella minima Lowell Ahart, John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  NY1082476  Hesperochiron californicus A. Tiehm 1986-5-12 10348 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  POM73736  Hesperochiron californicus Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  SBBG6101  Hesperochiron californicus H. and M. Dearing 1938-6-30 2230 Lassen 20 mi N of Susanville [Hwy 44] Comment
  UC124518  Hesperochiron californicus T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UC773897  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley Lassen Forest, Harvey Valley 1706 Comment
  SEINET5498645  Hesperochiron californicus D. E. Brix 1962-5-2 s.n. Lassen Spring 2 miles from Junction of Red Rock Rd. and Hwy 395 1433 Comment
  JEPS1670  Hesperochiron pumilus G. S. Crew and C. S. Robinson 1927-6-10 11 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  UC1523712  Hesperolinon micranthum Gary Schoolcraft 1981-6-25 478 Lassen East Fork of Wellard Creek 1584 Comment
  UC1601275  Hesperolinon micranthum Leo Whitney 1934-7-8 1793 Lassen open flat near Harvey Valley Spring (ca 14 mi w of Eagle Lake); Lassen National Forest Comment
  SJSU7861  Hesperolinon micranthum V. Hardham 1965-7-12 127 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou County) on State Rt 139 1463 Comment
  UC1609506  Hesperostipa comata Vernon H. Oswald and Lowell Ahart 1993-6-14 5542 Lassen n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  UC593455  Hesperostipa comata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1743 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  CAS-BOT-BC310910  Heterotheca villosa Margaret Williams 1974-7-27 74- 61 -61 Lassen West of Hwy 395 and south of Hwy 70. Near Hallelujah Junction 1493 Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  CAS-BOT-BC312311  Hieracium Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  HSC40172  Hieracium horridum Thomas W. Nelson, Jane P. Nelson 1976-8-1 3124 Lassen Lassen Volcanic National Park at Devestated Area Comment
  CAS-BOT-BC316040  Hieracium scouleri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49465 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 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
  CHSC105247  Hieracium scouleri var. nudicaule Lowell Ahart; John Dittes 2010-7-31 16973 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) southeast of Adin. 1508 Comment
  CHSC66720  Hieracium scouleri var. nudicaule Vernon H. Oswald; Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road. 2011 Comment
  CHSC66245  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1996-6-24 7885 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Localized colony in shallow water in marshy meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  UC1191967  Hippuris vulgaris Malcolm A. Nobs and S. Galen Smith 1949-8-20 1471 a Lassen 1 mi. s. Milford (Honey Lake Valley); Honey Lake Valley Comment
  UCD170233  Holodiscus discolor var. glabrescens K. M. Meyer; A. Townesmith 2007-7-23 150 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CHSC112406  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18728 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  POM352505  Hordeum arizonicum A. A. Beetle 1941-6-28 s.n. Lassen 6 mi south of Ravendale, Lower slopes of Observation Peak Comment
  JEPS28320  Hordeum brachyantherum subsp. brachyantherum George W. Gillett 1957-7-29 951 Lassen trail between Butte Lake and Snag Lake; Lassen Volcanic National Park, Butte Lake, Snag Lake 1859 Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  UC1136934  Hordeum brachyantherum subsp. californicum George A. Fischer and Irwin H. Johnson 1933-7-12 F 232 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  UCD85908  Hordeum marinum subsp. gussoneanum L. Whitney 1933-8-12 s.n. Lassen Black's Lake. Comment
  JEPS44570  Horkelia fusca subsp. tenella Brown & Wieslander 1922-7-23 30 Lassen Martin Sprs., Eagle Lake Comment
  HSC25727  Horkelia fusca var. tenella D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19181 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC537968  Horkelia tridentata var. flavescens Alice Eastwood 1912-8-22 1872 Lassen Morgan Spring, Butte Region Comment
  CAS-BOT-BC55478  Hornungia procumbens Arnold Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north northwest of Wendel. 1231 Comment
  POM95279  Hornungia procumbens Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC30619  Hydrophyllum capitatum var. alpinum Eric Miller 1975-6-24 10 Lassen N. E. corner of Deans Meadow, 15 ft. off dirt road. 1956 Comment
  JEPS87416  Hydrophyllum capitatum var. alpinum Vernon H. Oswald and Lowell Ahart 1993-5-12 5378 Lassen 3.5 mi nw of A21 to Westwood (on n side of road and on e side of Canal crossing Hwy 44) 1729 Comment
  UC1069096  Hydrophyllum capitatum var. alpinum A. Simontacchi 1940-5-10 692 Lassen 4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad. 1752 Comment
  RSA370316  Hymenolobus procumbens A. Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10350 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
  POM95280  Hymenolobus procumbens Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  SJSU8059  Hypericum anagalloides J. W. Tilden 1960-6-27 1523 Lassen 5 mi E of Westwood via Moonlight Rd 1524 Comment
  CHSC5007  Hypericum formosum var. scouleri L. G. Bennett 1967-7-8 123 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  UC117500  Idahoa scapigera T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  SEINET8887136  Iliamna bakeri R. R. Halse 2004-1 6615 Lassen Along State Hwy 139, ca 6 miles N of Eagle Lake 1710 Comment
  UC1037223  Ipomopsis aggregata Leo Whitney 1934-7-6 1591 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley Comment
  CHSC13883  Ipomopsis aggregata subsp. formosissima S. Villard 1973-7-12 65 Lassen Gallatin Peak. 1066 Comment
  CHSC63410  Ipomopsis congesta subsp. congesta V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6354 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  UC773903  Ipomopsis tenuituba L. R. Short 1936-6-25 S- 412 Lassen Burgess Spring Experiment Range 1865 Comment
  CAS-BOT-BC69982  Isoetes bolanderi John Thomas Howell 1960-8-23 36431 Lassen Emerald Lake. 2468 Comment
  UCD135760  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake campground, Lassen Park. 2057 Comment
  RSA0025413  Isoetes nuttallii Forrest Freund 2013-5-23 194 Lassen HWY 44. Near pond on the south west side of the road, in open patches. 1716 Comment
  CAS-BOT-BC324777  Iva axillaris John Thomas Howell 1975-7-23 51394 Lassen Susanville, Sierra Nevada 1295 Comment
  HSC28862  Iva axillaris D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19298 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  SD64329  Iva axillaris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395. 1675 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
  CAS-BOT-BC148542  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  HSC75599  Ivesia paniculata Thomas W. Nelson, Jane Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 mi. E of Adin 1555 Comment
  HSC77272  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin, 16.25 mi. W of Madeline Comment
  RSA614443  Ivesia paniculata M. L. Carlson 1996-6-11 s.n. Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET3877716  Juncus bufonius Arnold Tiehm, Jan Nachlinger; Gary Schoolcraft 1984-6-25 8824 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81.; 0 1829 Comment
  UC1583258  Juncus bufonius Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9467 Lassen 5.6 km (3.5 mi) s Madeline (along Highway 395); Madeline Plains 1620 Comment
  CHSC99280  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
  UC1137590  Juncus confusus A. Simontacchi 1940-7-3 918 Lassen 3.4 mi wsw Harvey Mtn. Lookout; Halls Flat Quad. 1828 Comment
  RSA129410  Juncus dubius H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow. 1524 Comment
  CHSC117203  Juncus hemiendytus var. hemiendytus Lowell Ahart; John Dittes 2016-6-7 20991 Lassen West edge of pond, 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC114407  Juncus laccatus Don Lepley 2014-6-17 Lassen Lassen National Forest; Eagle Lake Ranger District. Location uncertain; near one of the forks of Baxter Cfreek, probably the northernmost one, along either Road 29N07 or downslope at the A-spur. SE1/4 of NE1/4 of Sec 5 of SW1/4 of NW1/4 of Sec 4. 1767 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
  UC2489  Juncus mexicanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3278 Lassen Tule Confederacy Honey Lake Valley Comment
  CHSC29855  Juncus nevadensis Kyle Brown 1978-7-10 95 Lassen In meadow at the base of the dam in Murrers Upper Meadow. 1548 Comment
  HSC95312  Juncus nevadensis Gordon Leppig 1998-8-17 1041 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA201265  Juncus nevadensis J. T. Howell 1959-9-23 34884 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UC1142942  Juncus nevadensis A. L. Hormay 1941-6-18 3 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC1601784  Juncus nevadensis Baker and Nutting 1894-7-3 Lassen Dixie Creek Comment
  UCD108039  Juncus occidentalis Tim Kuhn 2006-7-26 76 Lassen Eagle Lake Ranger District. Comment
  SEINET3881686  Juncus sphaerocarpus Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville.; 0 Comment
  CHSC106359  Juncus trilocularis Lowell Ahart; John Dittes 2010-7-31 17026 Lassen About 20 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC66417  Juncus trilocularis Vernon H. Oswald; Lowell Ahart 1996-6-17 7805 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  RSA0035254  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, Cascade Range Highlands. 1730 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
  UCD133732  Juniperus californica Grady L. Webster; with Bot. 102 class 1989-5-13 7703 Lassen Scattered in sagebrush scrub on rolling slopes 2.5 mi E of Beckworth Pass. 1493 Comment
  CHSC13798  Juniperus occidentalis Cathy Crittenden 1970-7-8 26 Lassen About 300 yds. From five corners on road to Mahogany Lake. 1767 Comment
  CHSC66  Juniperus occidentalis K. McKenzie 1928-4-10 Lassen Near Bieber in Big Valley. Comment
  HSC1267  Juniperus occidentalis L. H. Myers 1963-4-10 40 Lassen 1.0 mi. S of Janesville 1280 Comment
  UCD133775  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen 5 miles from Susanville; dry hills on Gold Run Creek. 1310 Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
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Apr 29 2013
  UCR1818  Juniperus occidentalis subsp. australis Frank C. Vasek 1962-9-3 620903- 04 Lassen Calif. Hwy 36, 3.6 mi west of the Ranger Station, west of Susanville 1524 Comment
  RSA597842  Juniperus occidentalis var. australis F. C. Vasek 1962-9-3 620903 -1 Lassen State Highway 36, 3.6 miles west of Ranger Station, west of Susanville 1524 Comment
  RSA302156  Juniperus occidentalis var. occidentalis J. R. Shevock 1971-4-9 943 Lassen Hwy 299 1372 Comment
  UCR4284  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-9-1 650901- 01 Lassen On Karlo Road 3.6 mi north of the junction of Karlo Road & Litchfield Road, north of Susanville 1355 Comment
  CHSC23328  Juniperus osteosperma Mark Stopher 1976-1-11 30 Lassen Ca. 52 miles south of Susanville on Hwy 395 then two miles east on Red Rock Road. 1328 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  UCR3784  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 03 Lassen Calif. Hwy 70 (alt. US Hwy 40), 1.6 mi west of its junction w/ US Hwy 395 Comment
  CHSC77232  Kelloggia galioides G. Schoolcraft 1997-6-26 2605 Lassen Large knob W of Hwy 395 between Janesville and Milford. 1706 Comment
  HSC69049  Kelloggia galioides Gary Schoolcraft 1979-7-3 111 Lassen 4.3 mi. up the road from Observation Peak 2134 Comment
  POM68596  Kelloggia galioides Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA121074  Kelloggia galioides G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 255 Lassen Lassen Forest. 1784 Comment
  SJSU11548  Kelloggia galioides J. W. Tilden 1960-6-27 1496 Lassen Westwood 1554 Comment
  UC1136752  Kelloggia galioides George A. Fischer and Irwin H. Johnson 1933-7-14 255 Lassen Lassen National Forest 1783 Comment
  UC7408  Kochia americana J. Burtt Davy Jun 17 1897-Jun 24 1897 3329 Lassen Honey Lake Valley 1219 Comment
  JEPS97318  Kochia scoparia Vernon H. Oswald and L. Ahart 1995-8-14 7172 Lassen T30N R15E center N side Sec. 15, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  JEPS107461  Koeleria macrantha Lowell Ahart, John Dittes 2005-6-1 11860 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
  CAS-BOT-BC271331  Koeleria pyramidata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UC891450  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen about a mile e of Westwood Comment
  JEPS94084  Lactuca saligna Vernon H. Oswald and Lowell Ahart 1998-9-8 9574 Lassen Hwy. 299 at the R.R. overpass on e. side of Nubieber (near the hwy.) 1255 Comment
  CHSC113011  Lactuca serriola Lowell Ahart; John Dittes 2013-7-23 18887 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
  CAS-BOT-BC349842  Lactuca tatarica subsp. pulchella Gary Schoolcraft 1986-9-4 1669 Lassen Along n. shore of Eagle Lake 33-12-30 1554 Comment
  CAS-BOT-BC341485  Lagophylla ramosissima John Thomas Howell 1974-7-10 50527 Lassen Elysian Valley 1325 Comment
  POM204133  Lagophylla ramosissima J. T. Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles S of Susanville. Comment
  CDA8086  Lagophylla ramosissima T. C. Fuller 1964-10-7 12692 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber. 0 Comment
  CHSC71865  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1998-9-8 9575 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  CHSC99304  Lamium amplexicaule Lowell Ahart; John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC64767  Lappula redowskii var. cupulata Vernon H. Oswald 1995-5-24 6767 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  JEPS114637  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-20 14901 Lassen Sides of a vernal pool, 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
  JEPS120809  Lasthenia glaberrima Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen Near a drainage filled with dirt from construction of a pond, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley Comment
  SBBG128882  Lasthenia glaberrima L. Ahart, J. Dittes 2008-6-20 14901 Lassen sides of a vernal pool, ca. 100 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CHSC7669  Lathyrus brownii Beverley J. Wise 1969-5-9 58 Lassen 10.5 mi West of Susanville on Forest service rd. no. 8246 off Hwy 36. 1615 Comment
  SEINET11447828 Image available Layia glandulosa F. B. Headley 1915-5-28 s.n. Lassen Honey lake Comment
  UC1609230  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  UC30620  Layia glandulosa M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UCD55163  Layia glandulosa Ellen Dean 2006-5-15 3051 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  CDA42959  Lepidium chalepense L. Ahart, John Dittes, Todd Sloat 2013-6-9 18786 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. Comment
  UCD55157  Lepidium dictyotum Ellen Dean 2006-5-15 3045 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  NY76543  Lepidium latifolium J. T. Howell 1975-7-23 51384 Lassen Eagle Lake Lumber Company yard, Susanville 1295.4 Comment
  CAS-BOT-BC89720  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen On east side of road, Highway 395 to Lichtenfield, 4.7 miles south of Ravendale, Madelaine Plains. Comment
  CHSC5238  Lepidium perfoliatum L. Martin 1953-6-30 Lassen Eagle Lake. E side of Honey Lake near Doyle. 1299 Comment
  JEPS107842  Lepidium perfoliatum Lowell Ahart, John Dittes 2005-6-2 11920 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
  JEPS95756  Lepidium perfoliatum Vernon H. Oswald and L. Ahart 1995-6-19 6899 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  SFV1490  Lepidium perfoliatum I. L. Wiggins, D. B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. 1240 Comment
  UC1126714  Lepidium perfoliatum A. Simontacchi 1940-6-8 829 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1924234  Lepidium perfoliatum Debra Valov 2004-6-9 2004260 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  RSA0092312  Leptosiphon harknessii Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31424 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
  CHSC59839  Leucocrinum montanum Mary Meyer 1980-5-6 Lassen Left side of Hwy 395, along barbed-wire fence, 1/4 mi from old gas station. 1615 Comment
  CHSC61192  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1993-5-12 5375 Lassen NE side of Hwy. 44, 1.6 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  JEPS87460  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  CAS-BOT-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
  NY962818  Leucophysalis nana N. H. Holmgren 1980-7-4 9510 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  UCD64227  Leymus cinereus Beecher Crampton 1960-6-18 5718 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UC1037100  Leymus triticoides Leo Whitney 1933-8-4 2128 Lassen ca 10 mi nw north end of Eagle Lake; Lassen National Forest, Sheepshead 1889 Comment
  UCD65590  Leymus triticoides R. Tofsrud 1947-7-1 218 Lassen Near Thermos. Comment
  UCD86642  Leymus triticoides J. Earl Coke 1931-6-1 s.n. Lassen Lassen County. 1524 Comment
  UCD87762  Leymus triticoides L. G. Stiles 1927-6-2 s.n. Lassen Milford. Comment
  UC1142948  Lilaea scilloides A. L. Hormay 1941-6-18 5 a Lassen Little Harvey Valley; Lassen National Forest 1676 Comment
  POM109716  Lilium pardalinum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  JEPS120860  Limosella aquatica Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18755 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
  UC1101431  Limosella aquatica Malcolm A. Nobs and S. Galen Smith 1949-7-20 1046 Lassen Bieber Comment
  CAS-BOT-BC332738  Linanthus R. F. Thorne; Larry E. DeBuhr 1975-8-22 46973 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  JEPS114858  Linanthus bolanderi Lowell Ahart, John Dittes 2008-6-19 14892 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
  JEPS94989  Linanthus ciliatus Vernon Oswald and Lowell Ahart 1997-6-24 8605 .1 Lassen s of Susanville (3.5 mi e of Gold Run Road (29N10), on n side of Diamond Mountain at a stream on Forest Road 29N43); Diamond Mountain, Forest Road 29N43 1655 Comment
  JEPS58441  Linanthus harknessii G. S. Crew and C. S. Robinson 1927-7-15 76 Lassen Feather Lake, sw Lassen County Feather Lake 1737 Comment
  UC1025096  Linanthus harknessii Leo Whitney 1934-5-27 1639 Lassen near Crater Lake 1828 Comment
  UC106752  Linanthus septentrionalis T. S. Brandegee 1892-6-30 Lassen Jonesville Comment
  RSA715980  Linum lewisii L. Ahart, John Dittes 2005-6-2 11935 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  CHSC106064  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC36448  Linum lewisii var. lewisii Susan H. Euing 1982-6-3 2 Lassen Ca. 0.8 mi s jct forest service roads 5.16 and 5.17 heading towards 5-Corners. Comment
  SD43499  Lithophragma parviflorum Philip A. Munz 1947-5-18 11862 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville 1509 Comment
  CAS-BOT-BC428415  Lithophragma tenellum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49165 Lassen Elysian Valley northwest of Janesville. 1325 Comment
  CHSC68766  Lithophragma tenellum Vernon H. Oswald 1997-5-27 8503 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  CHSC71099  Lithophragma tenellum Vernon H. Oswald; Lowell Ahart 1998-5-22 9127 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  POM72685  Lithospermum ruderale Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  HSC69589  Lithospermum ruderale Gary Schoolcraft 1979-6-19 67 Lassen W of Post Camp on N side of main road 1829 Comment
  SEINET10456166  Lithospermum ruderale Paul Gallian, David B. Dunn 1971-6-2 Gallian 463 Lassen 6 mi. N of Hallelujah Jct. on US Hwy 395. 1402 Comment
  JEPS15825  Lomatium bicolor var. leptocarpum M. S. Baker and Franklin P. Nutting 1894-6-20 Lassen near Bieber (Big Valley); Big Valley Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  UC1609378  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1993-6-28 5620 Lassen e. Poison Lake (n. of Hwy. 44 along Rd. 33N47 at n.e. end of Little Harvey Valley, between Champs Flat and Harvey Valley, meadow bordering a drying branch of Pine Creek); Little Harvey Valley 1737 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
  UC1479579  Lomatium macrocarpum G. Schoolcraft 1980-4-8 204 Lassen just n. Viewland (w. side of Hwy. 395) 1371 Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  CHSC106671  Lomatium nevadense B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  OBI48160  Lomatium nevadense Rhonda Riggins 1989-4-27 1651 Lassen U.S. 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line. 1676 Comment
  CHSC101028  Lomatium nevadense var. nevadense John Dittes 2008-5-22 1540 Lassen Modoc Plateau; ca 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca. 465 feet east of intersection of Hwy 139 and FS Road 36N02. 483 Comment
  UC1483796  Lomatium nevadense var. nevadense G. Schoolcraft 1979-4-18 10 Lassen n. Skedaddle Ranch 1554 Comment
  UC1567383  Lomatium nevadense var. nevadense G. Schoolcraft 1989-5-3 1864 Lassen near Karlo (n.w. corner Secret Valley); Secret Valley 1356 Comment
  UCD127700  Lomatium nevadense var. parishii Grady L. Webster 1989-5-13 7718 Lassen 2.5 mi east of Beckworth Pass. Comment
  CHSC89727  Lomatium nudicaule L. P. Janeway 2004-6-26 8150 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  RSA125874  Lomatium nudicaule P. H. Raven, Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 miles east of Westwood on Hwy 36 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-BC217797  Lomatium ravenii Lincoln Constance; E. DiFulvio 1962-4-16 3747 Lassen 1 mile S of Ravendale 1615 Comment
  UC1483812 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen S of Ravendale 1615 Comment
  UCR183195  Lomatium ravenii Jim Andre, G. L. Clifton 1993-6-2 7716 Lassen Along Hwy 395 c. 25 mi NE of Susanville at Viewland exit, east of Shaffer Mtn 1349 Comment
  POM78598  Lomatium triternatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CHSC29890  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-8 50 Lassen .6 mi e of jct. With main road to ELFS on road to Murrers Upper Meadow. 1554 Comment
  UCD55281  Lomatium vaginatum Ellen Dean; Gary Schoolcraft 2006-5-16 3100 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1207 Comment
  OBI81598  Lomatium vaginatum Tracy Call, Viola Call 1961-5-30 2047 Lassen About 2 miles south of Ravendale 1463 Comment
  RSA18256  Lonicera conjugialis C. B. Wolf 1929-9-1 3786 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. 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
  UC726744  Lotus denticulatus A. A. Heller 1941-6-24 16191 Lassen 1 mi e Sieber (along US Hwy 299) Comment
  SEINET10452003  Lotus purshianus Mary Susan Taylor 1974-1 Taylor 281 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS107457  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2005-6-2 11970 -A 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
  JEPS117484  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2010-7-31 16999 Lassen On the north side of the road, about 15 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS55772  Lotus purshianus var. purshianus Brown and Wieslander 1922-8-19 89 Lassen Martin Springs Eagle Lake Comment
  UC1129240  Lotus purshianus var. purshianus A. Simontacchi 1940-6-30 903 Lassen 2.6 mi w Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  NY716011  Lotus tenuis A. J. Cronquist 1959-6-17 8474 Lassen Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville 1311 Comment
  RSA519408  Lupinus Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
  CHSC29949  Lupinus arbustus Robin Ondricek 1978-6-6 30 Lassen Approx. 1 mi from ELFS where lines corss road. 1584 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  JEPS28489  Lupinus arbustus George W. Gillett 1957-7-29 956 Lassen near the Butte Lake Trail (above Snag Lake); , near the Butte Lake Trail 1859 Comment
  SEINET10841274  Lupinus arbustus subsp. silvicola Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2577 Lassen 6 miles s of adin; along cal hwy 139 right-of-way; in basalt-clay, grassy road Bank; artemisia juniper assoc 1372 Comment
  UC1542916  Lupinus argenteus G. Schoolcraft 1987-9-1 1773 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC196338  Lupinus argenteus var. argenteus H. D. Ripley; R. C. Barneby 1944-5-30 5975 Lassen Ravendale 1676 Comment
  CAS-BOT-BC208731  Lupinus argenteus var. heteranthus M. S. Taylor 1982-6-12 4653 Lassen Doyle, ca. 0.5 mi E of Hwy 395 Comment
  CAS-BOT-BC208733  Lupinus argenteus var. heteranthus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 mi. from junction of Hwy. 36 and 395. 1249 Comment
  CAS-BOT-BC208748  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-16 8334 Lassen Near Susanville. Comment
  CAS-BOT-BC208750  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-15 8317 Lassen Upper Willow Creek east of Hayden Hill Comment
  CAS-BOT-BC208754  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21512 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CAS-BOT-BC208757  Lupinus argenteus var. heteranthus Doris Kildale Gillespie 1930-5-13 9372 Lassen Between Susanville and Janesville. 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
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline Comment
  NY736922  Lupinus argenteus var. heteranthus N. H. Holmgren 1978-6-11 8925 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance 1800 Comment
  NY736927  Lupinus argenteus var. heteranthus J. T. Howell 1974-7-8 50461 Lassen Susanville 1295 Comment
  NY736931  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of Doyle, along Highway 395 Comment
  RSA160042  Lupinus argenteus var. heteranthus David B. Dunn 1956-7-3 11919 Lassen On Highway 395. 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
  UC865087  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 Lassen just outside of Johnstonville ( along U.S. Hwy 395) Comment
  UCD106809  Lupinus argenteus var. heteranthus R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  CHSC93547  Lupinus argenteus var. meionanthus Lowell Ahart; John Dittes 2005-6-2 11937 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  SEINET10484833  Lupinus aridus Billy Joe Cox 1971-6-11 Cox 3190 Lassen 6 mi w. Of susanville on calif. Hwy 36; in volcanic soil; association with Pinus ponderosa forest. 1615 Comment
  JEPS79209  Lupinus brevicaulis L. R. Heckard with R. C. Bacigalupi 1980-6-11 5246 Lassen along US 395, 11.3 mi n Litchfield (s of Deep Creek crossing); , n of Litchfield 1463 Comment
  SEINET10484990  Lupinus brevicaulis Gary Schoolcraft 1980-5-30 Schoolcraft 246 Lassen Lassen co. T31n, r15e, se1/4, sec. 11. Elev. 4460'. On s side of rd. Into Diaz ranch at n end of mud flat. Associated with artemisia tridentata, Chrysothamnus spp., Sitanion hystrix. 1359 Comment
  CAS-BOT-BC196639  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  HSC81486  Lupinus caudatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6015 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 Comment
  SD43491  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford 1264 Comment
  SEINET10490714  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 481 Lassen 5 mi. S of milford near honey lake on us hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - jeffery pine on mountain range to w at Approx. The same altitude. 1250 Comment
  POM23529  Lupinus confertus Marcus E. Jones 1897-6-16 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA0029190  Lupinus confertus John F. Emmel 1997-6-8 1490 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  UCD108200  Lupinus latifolius var. columbianus Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mounains, Modoc National Forest, northeastern part of county (ca. 18. miles airline southeast of Likely). Comment
  SEINET6655529  Lupinus laxiflorus var. calcaratus Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale.; 0 1830 Comment
  CHSC4818  Lupinus lepidus var. confertus R. Carter 1967-7-16 618 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
  JEPS65081  Lupinus lepidus var. confertus W. L. Jepson Aug. 1918 7798 Lassen Raker Ranch near Buntingville; Raker Ranch naer Buntingville 1219 Comment
  SEINET249342  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395 ca. 7.8 miles southeast of Susanville. 1293 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
  CHSC91526  Lupinus lepidus var. sellulus L. P. Janeway 2005-7-4 8474 Lassen High Cascade Range. Along Road 33N02 in Windy Gap; meadow between Harvey Valley and Grays Valley. 1696 Comment
  UCD18975  Lupinus lepidus var. sellulus Jack N. Reppert 1964-8-5 29 Lassen Lassen National Forest, Harvey Valley Allotment (HV 80-75). 1719 Comment
  SEINET10870671  Lupinus leucophyllus Duane Isely 1971-7-12 Isely 11386 Lassen Open sagebrush plains, lassen natl forest, adjacent eo state #44, 29 mi east Jct state #89. Dense, conspicuous clusters; fls white, rapidly turningtan-ochroleucous; standard reflexed to 120 degrees; wings upturned 90 degrees; long-petioled basal leaves evident. 1676 Comment
  UC1713549  Lupinus polyphyllus var. burkei M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake Valley. Comment
  CHSC93681  Lythrum hyssopifolia Lowell Ahart; John Dittes 2005-6-2 11969 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
  JEPS107819  Lythrum hyssopifolia Lowell Ahart, John Dittes 2005-6-2 11969 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
  RSA0105576  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 Lassen About 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC342645  Madia citrigracilis John Thomas Howell 1934-7-8 12494 Lassen Spalding's, Eagle Lake 1584 Comment
  UC579789  Madia citriodora David D. Keck and J. Clausen 1935-6-25 3761 Lassen just w Susanville 1310 Comment
  CAS-BOT-BC342657  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  UCR67469  Madia elegans George K. Helmkamp 1990-10-4 M 11 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CAS-BOT-BC334687  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 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-BC343058  Madia gracilis John Thomas Howell 1973-7-10 49781 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC343055  Madia gracilis David D. Keck 1930-7-23 949 Lassen Susanville 1280 Comment
  CAS-BOT-BC343060  Madia gracilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50653 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  RSA164326  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Gold Run Creek south of Susanville. Comment
  HSC63963  Malacothrix sonchoides Teresa Prendusi 1980-5-30 Lassen Mapes Spring on hillside 1555 Comment
  UC1567438  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi N Wendel Road, along Skedaddle Ranch Rdoad. 1493 Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  HSC23508  Marrubium vulgare A. E. Anderson 1967-7-11 78 Lassen Around Bly Tunnel outlet, 1 mi. E of rd. to Eagle Lake Biological Station 1555 Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  SEINET3816871  Matricaria discoidea Noel H. Holmgren, Patricia K. Holmgren 1980-7-5 9522 Lassen Upper smoke creek drainage, 20.4 km from U.S. highway 395 via Rye Patch Canyon, 24 km airline distance southeast of Ravendale, 1580 Comment
  RSA647538  Matricaria matricarioides Marion P. Harthill 1972-6-16 783 Lassen Doyle 1372 Comment
  CHSC29877  Matricaria occidentalis Robin L. Ondricek 1978-8-26 127 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  CAS-BOT-BC282042  Melica fugax John Thomas Howell 1934-6-14 12167 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  UC972185  Melica fugax Milo S. Baker 1952-5-23 12427 Lassen e of Chester (Highway 36) Comment
  CHSC80722  Melica stricta V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10037 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  UCD88630  Melica subulata John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49438 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  SCFS2161  Melilotus albus C. Meek 1969-7-8 77 Lassen On roadside along Hwy 139, 2 mi E of Ravenville Rd. 1524 Comment
  CHSC106683  Mentzelia albicaulis B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC25305  Mentzelia albicaulis Pauleen Broyles 1977-6-1 152 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  JEPS94107  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9137 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  SFV12339  Mentzelia albicaulis J. Major 1966-6-24 s. n. Lassen Warner Mountains Above Blue Lake, about 18 miles (airline) southeast of Likely. 1905 Comment
  SFV2374  Mentzelia albicaulis I. L. Wiggins, D. B. Wiggins 1961-6-11 16340 Lassen 13.5 miles east of Susanville. 1240 Comment
  CDA36651  Mentzelia albicaulis S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC5299  Mentzelia congesta R. Gein 1946-6-25 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  HSC31748  Mentzelia congesta Donald Spalinger 1974-5-16 61 Lassen 300 yds. S of intersection of Rd. A3 and H 395 1250 Comment
  POM83650  Mentzelia congesta Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 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
  UC124778  Mentzelia congesta T. S. Brandegee 1893-6-23 Lassen Honey Lake Comment
  UC1609444  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  CHSC92643  Mentzelia dispersa L. P. Janeway 2005-7-4 8470 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  JEPS127346  Mentzelia dispersa Lowell Ahart, John Dittes 2016-7-13 21124 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC20266  Mentzelia laevicaulis J. Pitts 1972-7-20 334 Lassen Found on hwy 139, 10 mi n of Susanville. Comment
  JEPS42757  Mentzelia montana W. L. Jepson 1918-8-2 7773 Lassen Beckwith Pass 1463 Comment
  RSA202434  Mentzelia montana Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of Likely) 1905 Comment
  HSC95201  Menyanthes trifoliata Gordon Leppig, Tony LaBanca 1997-6-28 510 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS95001  Mertensia ciliata Vernon Oswald and Lowell Ahart 1997-6-24 8617 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  JEPS95161  Mertensia ciliata Vernon Oswald and Lowell Ahart 1997-6-24 8617 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  CHSC7717  Mertensia longiflora Beverley J. Wise 1969-5-3 3 Lassen 12 mi. N.E. of Susanville on Lass. Co. Rd. 216 off Las. Co. Rd. 215. On bank of Willow Creek. 1554 Comment
  CAS-BOT-BC429183  Micranthes oregana John Thomas Howell 1934-7-9 12516 Lassen Bridges Creek Spring Comment
  OBI76931  Microseris laciniata Anthony Baniaga 2011-7-9 434 Lassen Lassen Natl forest. SW Pine Crk Valley. Pine Crk valley quad T31N R8E sec 10 NE of NE 1715 Comment
  JEPS118157  Microseris laciniata subsp. laciniata Dean W. Taylor 2009-5-21 20606 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  JEPS88326  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1996-6-24 7843 Lassen Papoose Meados located ca.0/5 mi E of Eagle Lake Road (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau. 1633 Comment
  POM34993  Microseris nutans Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  RSA702595  Microseris nutans L. P. Janeway 2004-6-26 8152 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1136771  Microseris nutans L. R. Short 1936-6-1 S- 353 Lassen Lassen Forest 1859 Comment
  CHSC61166  Microsteris gracilis Vernon H. Oswald; Lowell Ahart 1993-5-12 5376 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 ( to Westwood). 1729 Comment
  RSA122924  Microsteris gracilis subsp. humilis L. R. Short 1936-5-7 S- 343 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  RSA104220  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 21757 Lassen Sage brush flat about Lassen County: 8 miles S of Madeline 1280 Comment
  RSA104221  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9801 Lassen 4 miles S of Ravendale. 1280 Comment
  CDA41658  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen East side of Poison Lake, 50 meters west of Pitville Road, 1.8 miles northwest of Highway 44, east of railroad track and wet ditch. Comment
  UC1778584  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen Moist clayey soil. East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track and wet ditch. 1749 Comment
  HSC95336  Mimulus guttatus Gordon Leppig, J. Cromwell 1997-7-27 618 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CDA41794  Mimulus guttatus T. C. Fuller 1961-5-17 6961 Lassen Hot springs, Wendell. 0 Comment
  UCD122727  Mimulus kelloggii K. Lui 1998-5-24 29 Lassen Lassen National Forest, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  UC27139  Mimulus layneae M. S. Baker and Frank Nutting Lassen Big Valley Comment
  JEPS94552  Mimulus lewisii Vernon Oswald and Lowell Ahart 1997-6-24 8616 Lassen 0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43 1889 Comment
  JEPS10777  Mimulus moniliformis Brown and Wieslander 1922-7-30 17 Lassen Martin Springs Comment
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  RSA411323  Mimulus nanus var. jepsonii Christopher Davidson 1974-7-25 2499 Lassen Lassen Volcanic Nat. Park. At Juniper Lake. 2134 Comment
  RSA715546  Mimulus nanus var. mephiticus L. Ahart, John Dittes 2005-6-1 11869 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1561980  Mimulus nanus var. mephiticus Barbara Ertter with Gary Schoolcraft 1987-6-16 7197 Lassen saddle on e side Hot Springs Peak (on ne side of lake); Skeedaddle Mountains, Honey Lake 2194 Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  RSA434702  Mimulus primuloides Christopher Davidson 1974-7-25 2495 Lassen Lassen Volcanic Nat. Park. On rd to Juniper Lake. 1982 Comment
  RSA152664  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  CHSC5272  Monardella odoratissima subsp. glauca J. B. Kimsey 1946-6-11 Lassen Pine Creek, near Eagle Lake. 1580 Comment
  CHSC65314  Monardella odoratissima subsp. glauca Vernon H. Oswald; Lowell Ahart 1995-8-14 7192 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  UC1137693  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen National Forest 1722 Comment
  CHSC29873  Monardella odoratissima subsp. pallida Robin L. Ondricek 1978-6-27 74 Lassen 1977 Burn, .1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  CAS-BOT-BC444695  Montia chamissoi Louella Bass 1973-6-17 123 Lassen Elysian Valley. 1325 Comment
  CHSC68757  Montia chamissoi Vernon H. Oswald; Lowell Ahart 1997-5-27 8498 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. In wet gravel on the flood plain of a small creek paralleling the road. 1546 Comment
  UC1567410  Montia chamissoi G. Schoolcraft 1989-7-18 1983 Lassen near Buck's Spring (s of Clark's Valley Road) 1874 Comment
  CHSC64850  Montia linearis Vernon H. Oswald 1995-6-26 6941 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. Common in moist, ashy soil of small openings on a flat of sagebrush. 1542 Comment
  CHSC93667  Muhlenbergia asperifolia Lowell Ahart; John Dittes 2005-6-2 11972 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
  CHSC60477  Muhlenbergia filiformis Mary Ann Showers 1992-6-12 2519 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  UC589840  Muhlenbergia filiformis H. S. Yates 1936-8-12 6081 Lassen McKenzie Meadow Susanville Quadrangle 1524 Comment
  RSA256304  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6237 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  CAS-BOT-BC275082  Muhlenbergia richardsonis Malcom A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline Comment
  RSA0115568  Muhlenbergia richardsonis Jim M. Andre, G. Clifton 1993-6-11 33424 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale. 1545 Comment
  UCD86988  Muhlenbergia richardsonis L. Whitney 1933-8-15 s.n. Lassen Near Slate Creek. 1905 Comment
  CHSC64813  Muilla transmontana Vernon H. Oswald 1995-5-31 6810 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.7 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC71134  Muilla transmontana Vernon H. Oswald; Lowell Ahart 1998-5-22 9133 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  CHSC7657  Muilla transmontana Beverley J. Wise 1969-5-3 145 Lassen 4.7 mi. east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1615 Comment
  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
  NY492641  Myosurus apetalus M. J. Williams 1986-5-14 8638- 3 Lassen Tuledad Canyon Road, from Duck Flat to Ravendale. 0.1 mile west of California-Nevada line. Comment
  CHSC60917  Myosurus apetalus var. borealis Vernon H. Oswald; Lowell Ahart 1993-7-8 5651 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along the edge of a wet pool on the E side of the railroad, which parallels the lake shore at this point. 1709 Comment
  CHSC54193  Myosurus minimus Vernon H. Oswald 1991-5-28 4621 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the beds of vernal pools east of the barn. 1264 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
  JEPS94606  Myosurus minimus Vernon H. Oswald and Lowell Ahart 1997-5-27 8518 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  UC72894  Myosurus minimus Milo S. Baker 1894-7-1 Lassen Dixie Mts Comment
  UC1101505  Myriophyllum sibiricum Malcolm A. Nobs and S. Galen Smith 1949-7-20 1049 Lassen Irrigation canal, ca. 4 mi W of Adin. Comment
  RSA0084057  Nama aretioides var. californica Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  HSC30194  Nama aretioides var. multiflora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19299 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CHSC7683  Nama demissa Berverly J. Wise 1969-5-18 48 Lassen 7.7 mi. E. of Susanville on Co. Rd. 215 on the south side of the road. 1341 Comment
  SEINET5520826  Nama densa var. densa M. J. Williams 1974-7-26 74 -L-18 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  RSA508616  Narthecium californicum Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  CHSC89734  Navarretia breweri L. P. Janeway 2004-6-26 8143 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  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
  UCR119029  Navarretia intertexta Beecher Crampton 1954-7-6 2072 Lassen Modoc Plateau, 17 miles south of Ravendale along US highway 395. 1524 Comment
  CHSC113069  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2013-7-22 18869 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1008717  Navarretia intertexta subsp. propinqua Laura E. Mills 1940-7-8 Lassen about 2 mi s Susanville; Sierra Nevada Mountains 1524 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
  UCD48605  Navarretia intertexta subsp. propinqua John M. Tucker 1950-7-25 1977 Lassen On road from Pittville, 33 miles northwest of Susanville, Lassen County, California. Comment
  CHSC1252  Navarretia leptalea K. Chew 1951-7-8 Lassen Stephens Meadows, Pine Creek. 1706 Comment
  CAS-BOT-BC230335  Navarretia leucocephala Mrs. H. C. Cantelow 1940-5-31 4144 Lassen E of Bieber Comment
  CHSC34344  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5868 Lassen E end of Champs Flat. Comment
  JEPS88516  Navarretia leucocephala subsp. minima Vernon H. Oswald and Lowell Ahart 1996-6-24 7847 Lassen Papoose Meadows located ca. 0.5 mi. e. of Eagle lake Rd. (A1) and 2.5 mi. s. of Eagle Lake (on w. side of the meadow just s. of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1058208  Navarretia leucocephala subsp. minima C. McMillan 1949-6-15 1542 Lassen 5 mi w Bieber Comment
  UC23714  Navarretia leucocephala subsp. minima M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  RSA293374  Navarretia leucocephala subsp. minima Reino Alava 1957-7-5 1143 Lassen Along Highway 395, 10 miles N of Madeline. Comment
  SEINET2440301  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2006-7-2 06 -138 Lassen Lassen Nat. Forest, Long Lake vicinity. Off Hwy 44 at mile marker 20.74 (just E of jct between 44 and county road A21). Along shore between trees and water's edge, particularly at point where spur from Hwy 44 connects with road next to lake.; 0 1736 Comment
  SEINET10496833  Navarretia propinqua Mary Susan Taylor 1974-1 Taylor 277 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 Lassen Gold Run Creek south of Susanville Comment
  UCSB30253  Nemacladus interior Hardham, Clare 1961-6-16 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC219366  Nemophila Louella Bass 1973-4-15 26 Lassen Elysian Valley 1325 Comment
  RSA38472  Nemophila parviflora var. austiniae P. A. Munz 1947-5-18 11860 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  CHSC61157  Nemophila pedunculata Vernon H. Oswald; Lowell Ahart 1993-5-12 5389 Lassen Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. In a sagebrush scrub meadow on the S side of the road. 1719 Comment
  UC791038  Nemophila pedunculata Calvin McMillan and Malcolm A. Nobs 1949-6-15 1539 Lassen 5 mi w Nubieber; w of Nubieber Comment
  POM73805B  Nemophila pedunculata Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 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
  CHSC5920  Nicotiana attenuata J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Horse Lake. 1554 Comment
  CDA41136  Nicotiana attenuata T. C. Fuller 1959-7-7 4734 Lassen Highway 395, 2.4 miles south of road to Karlo. 0 Comment
  HSC21267  Nicotiana attenuata M. T. Milligan 1964-8-23 238 Lassen 400 yards E of Siad Valley Reservoir on Termo Rd. 1524 Comment
  UC1111001  Nuphar lutea subsp. polysepala Herbert L. Mason 1957-7-7 14727 Lassen Valley s of Eagle Lake Comment
  RSA0009448  Nuphar lutea subsp. polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC171462  Oenothera boothii Louella Bass 1978-5-18 s.n. Lassen Amedee Comment
  JEPS124827 Image available Oenothera cespitosa M. L. Wheelis 1964-6-30 125 Lassen 16 miles north of Hallelujah Junction, highway 395. Comment
  UCD33605  Oenothera deltoides Beecher Crampton 1970-6-26 8638 Lassen Lassen County, 10 miles north of Milford. Comment
  SEINET10453107  Oenothera deltoides Mary Susan Taylor 1982-6-12 Taylor 4652 Lassen T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft. 1280 Comment
  UC1186579  Oenothera deltoides subsp. piperi G. I. Stage and R. W. Thorp 1959-6-19 59 -113 Lassen 7.2 mi se Milford Comment
  UC66124  Oenothera deltoides subsp. piperi P. B. Kennedy 1901-6-10 Lassen R.R. station Constantia Comment
  SEINET5345714  Oenothera deltoides var. piperi P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  SEINET3150416  Oenothera tanacetifolia E. K. Balls 1950-5-9 15954 Lassen 5 mi. S of Modoc Co. line, Hwy 395 1219 Comment
  CAS-BOT-BC349944  Onopordum acanthium T. C. Fuller 1958-7-8 898 -58 Lassen Highway 299, 0.1 mi. S. of Lassen County Line Comment
  CDA36768  Onopordum acanthium D. B. Joley 1976-6-16 1 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  RSA0049669  Onopordum acanthium subsp. acanthium Dean Wm. Taylor 2012-5-15 21197 Lassen Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley) 1676 Comment
  CAS-BOT-BC350039  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen About a mile east of Westwood 1524 Comment
  HSC93313  Oreostemma alpigenum var. andersonii Vernon H. Oswald, L. Ahart 1996-8-1 8121 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  HSC97139  Oreostemma elatum Martin J. Lenz 2005-7-20 2042 Lassen N slope od Dryer Mtn.; approx. 1.4 air mi. N of summit: Roseburg Resources Co. 1822 Comment
  CHSC105235  Orobanche californica subsp. jepsonii Lowell Ahart; John Dittes 2010-7-31 16985 A Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1137776  Orobanche corymbosa subsp. corymbosa August L. Hormay 1934-7-2 Lassen Lassen National Forest, 1/4 mile NW of Black's Mountains, Headquarters. Comment
  UC773942  Orobanche corymbosa subsp. corymbosa L. R. Short and J. Warren 1936-6-30 S- 465 Lassen NW of Eagle Lake, Burgess Spring Experiment Range. Comment
  RSA0077927  Orobanche corymbosa subsp. corymbosa Clare B. Hardham 1961-6-17 7530 Lassen Route 395 between Alturas and Susanville. Comment
  CAS-BOT-BC500270  Orobanche uniflora subsp. occidentalis Doris Kildale Gillespie 1930-5-13 9368 Lassen Between Susanville and Janesville Comment
  RSA516524  Orthocarpus campestris Helen-Mar Wheeler 1952-7-11 s.n. Lassen South of Madeline. Comment
  SD52193  Orthocarpus copelandii var. cryptanthus F. Stephens 1894-7-15 8115 Lassen Bunch Grass Spring Comment
  UCD18956  Orthocarpus cuspidatus subsp. copelandii Raymond D. Ratliff 1965-7-17 21 Lassen Lassen National Forest, Lyon's hgd., Harvey Valley Allot. 1706 Comment
  UC1484779  Orthocarpus cuspidatus subsp. cryptanthus Noel H. Holmgren and Patricia K. Holmgren 1978-6-12 8933 Lassen 17 km (10.5 mi) airline distance ese Ravendale (s of Observation Peak, upper Smoke Creek); Upper Smoke Creek, just s of Observation Peak 1770 Comment
  UC1537445  Orthocarpus cuspidatus subsp. cryptanthus Gordon H. True Jr. 1936-6-25 526 Lassen e Harvey Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  RSA165526  Orthocarpus hispidus Clare B. Hardham 1961-6-17 7501 Lassen Baxter Creek S of Susanville. Comment
  CHSC13864  Oxypolis occidentalis Mary Meyer 1973-7-7 20 Lassen Located at NE end of Murrer's Upper Meadow. 1572 Comment
  RSA616541  Oxytheca dendroidea G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border Comment
  UC35987  Packera eurycephala var. eurycephala M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixie Mts. Comment
  CAS-BOT-BC317058  Packera multilobata Elmer Ivan Applegate 1897-6-3 867 Lassen south of Madeline plains Comment
  CDA24372  Paeonia brownii T. C. Fuller 1962-6-13 8997 d Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  SEINET10537847  Paeonia brownii Mary Susan Taylor 1982-8-27 Taylor 5053 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
  UCD102581  Paeonia brownii F. H. Taylor 1932-5-1 s.n. Lassen Indian Valley. Comment
  SEINET229883 Image available Pappostipa speciosa G. Schoolcraft 1982-6-22 721 Lassen N end of Fort Sage Mts. 1524 Comment
  RSA294197  Pectocarya penicillata A. Tiehm 1980-5-29 5753 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  SEINET13352677  Pectocarya penicillata A. Tiehm 1980-1 5753 Lassen N end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  JEPS10727  Pedicularis groenlandica Chesnut and Drew Lassen Lassen Peak Comment
  UC1125741  Pedicularis semibarbata A. Simontacchi 1940-5-27 727 Lassen 9.3 mi nw of Crater Lake; Lassen National Forest 1752 Comment
  SEINET10547960  Penstemon confusus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2607 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along ridge and in sandy wash. 1402 Comment
  SD77352  Penstemon deustus Francis W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1096 Comment
  POM203062  Penstemon deustus subsp. heterander J. T. Howell 1934-7-9 12523 Lassen Pine Creek Flat Comment
  JEPS29103  Penstemon deustus var. pedicellatus Lauramay T. Dempster 1961-6-17 1679 Lassen Highway 395 just w Tule Mt.; just w of Tule Mt. 1645 Comment
  CHSC29258  Penstemon gracilentus J. D. Prouty 1978-6-28 11 Lassen E of Eagle L., at W shore of Lower Dy L. Comment
  CHSC57205  Penstemon gracilentus Mary Meyer 1980-7-23 Lassen Along Cleghorn Creek. 1645 Comment
  JEPS11268  Penstemon gracilentus Brown and Wieslander 1922-7-25 5 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  JEPS27801  Penstemon gracilentus Frances D. Payne 1929-7-12 81 Lassen Lost Lake e drainage..Warner Range, Skunkcabbage and Silver Creeks... (watersheds of Skunkcabbage and Silver Creeks, eastern drainage of the s end of the Warner Range) 2286 Comment
  RSA408033  Penstemon gracilentus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1063167  Penstemon gracilentus H. P. Hagge 1935-9-12 27 Lassen Logan Mtn. Eagle Lake Quad., Logan Mtn. Comment
  UC1537436  Penstemon gracilentus Gordon H. True Jr. 1938-7-14 959 Lassen summit on Milford Grade , just on n slope (just on n slope) 1676 Comment
  HSC21014  Penstemon gracilentus M. T. Milligan 1964-7-16 142 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  CAS-BOT-BC245656  Penstemon janishiae G. Schoolcraft 1997-8-6 2660 Lassen Diamond Mtn. 2316 Comment
  UCD124278  Penstemon laetus Beecher Crampton 1964-6-26 7082 Lassen ca. 32 miles northwest of Susanville west end of Harvey Valley. Comment
  CHSC66733  Penstemon neotericus Vernon H. Oswald; Lowell Ahart 1996-8-1 8118 Lassen Junction of Forest Rd. 28N56 (D-line) and the spure road to Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1536 Comment
  NY627263  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen Pinus Ponderosa forest west of Westwood. Comment
  HSC93439  Penstemon neotericus Vernon H. Oswald, L. Ahart 1996-8-1 8118 Lassen Junction of FS Rd. 28N56 (D-Line) and the spur road to Indian Ole Dam on Mtn. Meadows Reservoir, SW of Westwood 1537 Comment
  NY627269  Penstemon neotericus C. B. Wolf 1937-8-7 9068 Lassen Northern Sierra Nevada, Red Bluff-Susanville Road, 11.5 miles east of Chester 1493.5 Comment
  RSA21708  Penstemon neotericus Carl B. Wolf 1937-8-7 9068 Lassen Northern Sierra Nevada. Red Bluff -Susanville Road, 11.5 mi E of Chester. 1494 Comment
  UC887182  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen between Chester and Westwood; between Chester and Westwood 1524 Comment
  SEINET3836566 Image available Penstemon newberryi subsp. newberryi Marcus E. Jones 1897-7-7 Lassen Lassen's Peak 1829 Comment
  CAS-BOT-BC239220  Penstemon newberryi var. berryi Hans Leschke 1957-7-12 s.n. Lassen Lassen Volcanic National Park, above Cold Boiling Lake 2377 Comment
  CHSC36449  Penstemon roezlii Susan H. Euing 1982-6-4 3 Lassen Ca. 0.5 mi e of Murrers Upper Meadow on road leading to meadow. Comment
  CHSC37349  Penstemon roezlii Jennifer Estep 1978-6-27 19 Lassen Dry L., E of Eagle L. 1645 Comment
  CHSC4267  Penstemon roezlii K. R. Stern 1967-6-24 2417 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC5913  Penstemon roezlii R. Gein 1946-6-26 Lassen Eagle Lake. Pine Creek bridge. 1584 Comment
  POM44786  Penstemon roezlii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET12326936  Penstemon rydbergii L. E. Ray 1967-1 100 Lassen 8 mi S ELBS, Deans Meadow 1951 Comment
  CAS-BOT-BC239495  Penstemon rydbergii var. oreocharis Leland S. Smith 1927-7-1 49 Lassen Lassen National Forest, at Bogard Ranger Station Comment
  CHSC12939  Penstemon rydbergii var. oreocharis K. R. Stern 1974-6-26 5869 Lassen E end of Champs flat. Comment
  CHSC1878  Penstemon rydbergii var. oreocharis K. Chew 1954-7-6 Lassen Along Pine Creek, 1 mi. below Stephens meadows. 1828 Comment
  CHSC99300  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2008-6-20 14919 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  NY651296  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219.2 Comment
  RSA0115350  Penstemon rydbergii var. oreocharis Lowell A. Ahart, John Dittes 2008-6-20 14919 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1142926  Penstemon rydbergii var. oreocharis A. L. Hormay 1941-6-25 22 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 Comment
  UC506978  Penstemon rydbergii var. oreocharis George A. Fischer and Irwin H. Johnson 1933-7-12 F 228 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  CHSC12458  Penstemon speciosus Robert W. Severin 1969-6-20 2 Lassen 4 miles s of E. L. B. S. in Dean's Meadow. 1950 Comment
  NY660816  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen Southwest slopes of Cold Springs Mountain 1890 Comment
  NY660832  Penstemon speciosus F. W. Pennell 1940-6-9 25753 Lassen Route 395, 5 miles north of Madeline 1676.4 Comment
  NY661007  Penstemon speciosus A. J. Cronquist 1959-6-16 8455 Lassen 26 miles northwest of Reno Comment
  CAS-BOT-BC239665  Penstemon sudans John Thomas Howell; Gordon H. True 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC243406  Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen NE of Shaffer Mtn. 1356 Comment
  CHSC13647  Penstemon sudans M. S. Taylor 1974-7-13 310 Lassen Ca 15 ft w of Mohagany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  NY661802  Penstemon sudans W. W. Eggleston 1911-7-7 7177 Lassen Secret Valley 1330 Comment
  NY661807  Penstemon sudans B. J. Ertter 1987-6-16 7178 Lassen Skeedaddle Mountains on northeast side of Honey Lake, ca. 1 mile west of Hot Springs VABM 1828.8 Comment
  UC423647  Penstemon sudans David D. Keck 1930-7-23 953 Lassen 4 mi w Susanville; Sierra Nevada 1463 Comment
  CDA26041  Peraphyllum ramosissimum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20382 Lassen On slope above the west side of Smoke Creek Reservoir. 0 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
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  CHSC42647  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1986-5-28 2049 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC85820  Perideridia bolanderi subsp. bolanderi David French 1968-6-2 2881 Lassen Near State Hwy. 36, 13.8 mi E of Westwood, 5.1 mi E of Fredonyer Pass; roughly 8 mi W of Susanville. Comment
  UC1523773  Perideridia oregana Gary Schoolcraft 1971-7-13 503 Lassen near Silva Flat 1719 Comment
  SEINET3088961 Image available Peritoma platycarpa N. H. Holmgren, Patricia K. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC423345  Peritoma platycarpa Roxana S. Ferris; Rena Duthie 1919-6-11 13 Lassen Murry on N.C.O. line Comment
  OBI48093  Peritoma platycarpa Rhonda Riggins 1989-4-27 1638 Lassen Wash through volcanic boulder pavement, US395, 8.4 mi N. Litchfield, 26.6 mi S Rav endale 1311 Comment
  JEPS1608  Phacelia adenophora Mrs. C. C. Bruce June 1898 2198 Lassen Madeline Plains Comment
  JEPS79216  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  RSA38632  Phacelia adenophora P. A. Munz 1947-5-19 11872 Lassen 19 miles south of Ravendale. 1341 Comment
  RSA715550  Phacelia bicolor L. Ahart, John Dittes 2005-6-1 11886 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
  CHSC91316  Phacelia bicolor var. bicolor Lowell Ahart; John Dittes 2005-6-1 11886 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  JEPS29745  Phacelia bicolor var. bicolor Rimo Bacigalupi and L. R. Heckard 1962-5-28 8500 Lassen junction of cut-off road to Standish and Litchfield (Lassen Co. A3) with U.S. highway 395 1219 Comment
  JEPS94704  Phacelia bicolor var. bicolor Vernon H. Oswald and Lowell Ahart 1998-5-22 9132 Lassen 6 mi ne of Doyle (3.5 mi e of Fort Sage Road, near the summit of the dirt road in the Fort Sage Mountains); Fort Sage Mountains 1737 Comment
  UC1924219  Phacelia hastata Debra Valov 2004-6-9 2004257 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 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
  CHSC14060  Phacelia hastata subsp. hastata K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5818 Lassen Patch of dark volcanic ash in sagebrush area, ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CHSC59550  Phacelia hastata subsp. hastata Mary Meyer 1980-7-22 519 Lassen Top of Fredonyer Peak, north of sharp bend in road at top, in rock outcrops. 2346 Comment
  UC773947  Phacelia heterophylla subsp. virgata L. R. Short and Wm. Gansberg 1936-7-9 S- 478 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  RSA638996  Phacelia heterophylla subsp. virgata Michael A. Vincent 1999-6-9 8585 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  JEPS2120  Phacelia humilis Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  POM73344  Phacelia humilis var. humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC764434  Phacelia inundata Verne Grant 1947-9-5 8374 Lassen nw shore of lake by Sam Webb's place (Spaldings); Eagle Lake Comment
  CHSC26176  Phacelia linearis J. P. Kroessig 1977-5-23 36 Lassen Eagle Lake Biological Station ca 37 km nnw of Susanville. 1570 Comment
  CHSC59551  Phacelia linearis Mary Meyer 1980-5-20 Lassen Common along ridges above Secret Creek. 1432 Comment
  JEPS2134  Phacelia linearis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen near Chat; Honey Lake Valley Comment
  JEPS94103  Phacelia linearis Vernon H. Oswald and Lowell Ahart 1998-5-22 9106 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  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
  RSA303850  Phacelia linearis Jim R. Shevock 1972-5-20 1819 Lassen Highway 395, Honey Lake. 1311 Comment
  UCD20363  Phacelia linearis Joe DiTomaso 2002-6-4 s.n. Lassen Lassen County, about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. Comment
  NY1056435  Phacelia lutea var. glandulifera R. R. Halse 1974-6-27 1055 Lassen In a road cut along U.S. Highway 395, 5.4 miles south of Ravendale 1620 Comment
  HSC13645  Phacelia mutabilis M. T. Milligan 1964-7-16 134 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  JEPS17909  Phacelia procera Rimo Bacigalupi with G. T. Robbins 1955-7-21 5433 Lassen along upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Cr. 1767 Comment
  SEINET7926036  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
  UC107342  Phacelia ramosissima var. eremophila T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  CHSC27604  Phacelia ramosissima var. ramosissima N. E. Heiken 1978-7-27 51 Lassen SE side of Eagle Lake. 1554 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
  JEPS109642  Phacelia thermalis Dean W. Taylor 2002-6-21 18170 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CAS-BOT-BC250847  Phleum pratense John Thomas Howell; Gordon H. True; Margaret Williams; Louella Bass 1973-6-28 49504 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC41845  Phleum pratense P. V. Caldwell 1972-7-12 272 Lassen Eagle Lake. On banks from Eagle Lake to Papoose Meadows on Papoose Creek. Comment
  UC1100415  Phleum pratense Herbert L. Mason and Verne Grant 1947-7-9 13303 Lassen 5 mi e Bieber (irrigation ditch) Comment
  CHSC35954  Phlox diffusa M. S. Taylor 1982-5-7 4430 Lassen Reno Junction and along old road parralleling Hwy 70, just e of Beckwourth Pass. 1676 Comment
  UC1124221  Phlox gracilis A. Simontacchi 1940-5-10 690 Lassen 7.3 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1752 Comment
  OBI77067  Phlox hoodii subsp. canescens Anthony Baniaga 2011-6-7 311 Lassen Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  CHSC4772  Phlox speciosa R. Carter 1967-6-27 563 Lassen Ca. 5 yds. off N side of Rd. Comment
  CHSC1306  Phlox speciosa subsp. occidentalis M. Anthony 1953-4-27 Lassen Susanville. 1280 Comment
  JEPS69990  Phlox speciosa subsp. occidentalis Leland S. Smith 1918-5-12 922 Lassen Hayden Hill, s end of Modoc National Forest Modoc National Forest Comment
  OBI76927  Phlox speciosa subsp. occidentalis Anthony Baniaga 2011-6-11 333 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
  RSA715614  Phlox speciosa subsp. occidentalis L. Ahart, John Dittes 2005-6-1 11846 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
  RSA104310  Phlox speciosa subsp. occidentalis Verne Grant, Alva Grant 1956-5-17 9797 Lassen Just north of Milford on Highway 395 1311 Comment
  NY963724  Phlox speciosa var. occidentalis W. W. Eggleston 1911-5-29 6733 Lassen Vicinity of Doyle Station 1290 Comment
  CHSC36482  Phlox stansburyi Margaret E. Halloran 1982-6-4 7 Lassen 3 1/2 mi s of jct of 5.17 and 5.16 on 5.17. Comment
  CHSC71130  Phlox stansburyi Vernon H. Oswald; Lowell Ahart 1998-5-22 9114 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
  UC465863  Phoradendron densum Milo S. Baker 1900-7-6 Lassen s. side Dixey Mts. Comment
  CDA19731  Phyllodoce breweri J. Chattin August 1947 s.n. Lassen Northern California; Silver Lake. 0 Comment
  UC1037196  Phyllodoce breweri Leo Whitney 1934-9-16 1518 Lassen Lassen National Park, nw edge of Bumpass Hell Bumpass Hell; Lassen National Park, Bumpass Hell 2560 Comment
  HSC1474  Pinus contorta R. A. Magie 1964-5-1 61 Lassen 15 mi. W of Susanville on Hwy. 44 1524 Comment
  NY61587  Pinus jeffreyi K. Morris 1973-5-25 219 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET10530757  Pinus jeffreyi Jeffrey Huber 1971-6-2 Huber 141 Lassen 6 mi N of Halleluja Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  CHSC12502  Pinus lambertiana Carol Weld 1969-6-20 13 Lassen Road between Five Corners and Dean's Meadow. 1889 Comment
  SEINET12521273  Pinus ponderosa var. ponderosa J. Mapes s.n. Lassen Susanville Peak Area. NW corner of Township Comment
  RSA123889  Plagiobothrys bracteatus A. Simontacchi 1940-5-14 715 Lassen 10.2 miles east of Coyote Springs 1700 Comment
  UC1594603  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1992-7-16 5113 Lassen between Old Station and Susanville (on s side of Hwy 44, Bridge Creek entering McCoy Flat Reservoir); Bridge Cree, McCoy Flat Reservoir 1691 Comment
  UC526162  Plagiobothrys cognatus John Thomas Howell 1934-6-10 11890 Lassen 15 mi. n. Susanville (on rd. to Horse Lake) Comment
  CHSC58837  Plagiobothrys cusickii Vernon H. Oswald; Lowell Ahart 1992-7-16 5113 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  JEPS120895  Plagiobothrys cusickii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18772 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
  JEPS127173  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-15 21212 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SJSU8035  Plagiobothrys cusickii J. W. Tilden 1960-6-27 1518 Lassen 5 mi E of Westwood by Moonlight Rd 1524 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
  UC1618198  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy. 44 ca. 1 mi. e. Shasta Co. line (s. of hwy.) 1645 Comment
  CHSC64872  Plagiobothrys leptocladus Vernon H. Oswald; Lowell Ahart 1995-6-19 6896 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  UC1191065  Plagiobothrys mollis Robert Ornduff 1959-7-18 5060 Lassen 1 mi e Madeline (on road from Madeline to the Patterson Ranger Station); Modoc National Forest Comment
  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
  RSA39738  Plagiobothrys scouleri var. hispidulus P. A. Munz 1947-5-20 11891 Lassen Milford. 1265 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
  POM89198  Plagiobothrys tenellus Milo S. Baker 1890-1 s.n. Lassen Milford. Comment
  SEINET10972868  Plagiobothrys tenellus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17760 Lassen Approx. 12 mi S of Adin on CA Hwy 139. 1372 Comment
  SBBG19323  Plagiobothrys torreyi C. B. Hardham 1961-6-17 7509 Lassen Baxter Crk, S of Susanville 1676 Comment
  SJSU9125  Platanthera dilatata var. leucostachys H. L. Buckalew 1961-7-2 Lassen Blue Lake near Blue Lake Road Comment
  UC845587  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen about 1 mi e Westwood 1524 Comment
  CHSC99738  Plectritis macrocera Lowell Ahart; John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  RSA433737  Plectritis macrocera Christopher Davidson 1975-6-7 2754 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SEINET8658736  Plectritis macrocera C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CHSC36850  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade, s of and paralleling Hwy 70, just se of Beckwourth Pass on Plumas-Lassen county line. 1584 Comment
  CHSC50824  Pleiacanthus spinosus Vernon Oswald; Lowell Ahart 1990-7-25 4395 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. Roadside bank. 1463 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
  UC1924231  Poa bulbosa Debra Valov 2004-6-9 2004261 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 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
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1024877  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (Ash Creek) Comment
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Jun 24 2009
  UC1533157  Poa cusickii subsp. cusickii G. Schoolcraft 1986-6-25 1644 Lassen 3 mi nw Termo 1615 Comment
  CAS-BOT-BC247319  Poa pratensis Louella Bass 1973-5-29 EU 67 Lassen Elysian Valley 1325 Comment
  UC1024691  Poa pratensis subsp. pratensis Leo Whitney 1933-8-2 2154 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen Nat'l Forest 1920 Comment
  RSA647525  Poa secunda Marion P. Harthill 1972-6-17 824 Lassen Madeline. 1677 Comment
  UC1924591  Poa secunda Debra Valov 2006-5-28 2006001 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1284 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
  UCD90454  Poa secunda L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Comment
  CHSC33318  Poa secunda subsp. juncifolia P. Reynolds 1979-7-4 18 Lassen 3 mi. NE of Wendel, Wendel Canyon in the Skedaddle Mtn. Range. 1371 Comment
  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
  UC1024949  Poa secunda subsp. juncifolia Leo Whitney 1935-6-27 3317 Lassen ca 13 mi w of n end Eagle Lake; Squaw Valley Comment
  UCD92157  Poa secunda subsp. juncifolia A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3370 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  JEPS127637  Poa secunda subsp. nevadensis Alejandro Brambila, Michael Dolan 2016-6-27 CA 320 -151 Lassen Northwest of Madeline Plains up Anderson Canyon to Spooner Reservoir. Comment
  CAS-BOT-BC236177  Poa secunda subsp. secunda Doris Kildale Gillespie 1930-5-14 9379 Lassen Fredonia Pass near Susanville Comment
  HSC38602  Poa secunda subsp. secunda J. P. Smith, J. O. Sawyer 1971-5-23 4660 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  UC1024818  Poa secunda subsp. secunda Leo Whitney 1935-6-19 3261 a Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132876  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 737 Lassen 5.9 mi s Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132882  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 747 Lassen 1.1 mi ssw Dixie Spring; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1024806  Poa wheeleri Leo Whitney 1935-6-23 3287 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024823  Poa wheeleri Leo Whitney 1935-6-13 3241 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024873  Poa wheeleri Leo Whitney 1935-5-26 3154 Lassen 10 mi e Adin (Ash Creek) Comment
  RSA0036995  Polemonium micranthum Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18743 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
  UC449772  Polemonium occidentale Franklin P. Nutting 1894-7-28 Lassen Bridge Creek Bridge Creek (Northern California) Comment
  POM74373  Polemonium occidentale Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  SEINET258241 Image available Polyctenium fremontii var. confertum Arnold Tiehm, Jan Nachlinger, Margaret Williams 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on Hwy. 295 from Susanville to Alturas. T30N R15E Sec 15 1350 Comment
  CHSC117618  Polygala subspinosa L. P. Janeway and B. Castro 2015-6-5 11765 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  NY1002472  Polygala subspinosa H. D. D. Ripley 1943-6-15 5760 Lassen East of Viewland 1311 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
  CHSC76287  Polygonum aviculare Lowell Ahart; Vernon H. Oswald 1999-9-13 8225 Lassen Along a small slough, on the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  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
  JEPS81643  Polygonum aviculare subsp. neglectum M. S. Taylor 1982-8-19 5021 Lassen e side of Hwy 395 ca 4 mi n jct with Hwy 70 at Hallalujah Junction; Beckwourth Pass quad. 1493 Comment
  UC1136194  Polygonum bistortoides Robert W. Gardner 1937-6-20 G- 20 Lassen Burgess Spring Halls Flat Quadrangle Comment
  UC1562677  Polygonum davisiae Barbara Ertter 1988-7-25 7863 Lassen ridge ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville); Diamond Mts. 2286 Comment
  UC1136177  Polygonum douglasii subsp. douglasii E. Sawyer 1935-6-27 215 Lassen Long Valley Sierraville Quadrangle Comment
  JEPS51271  Polygonum douglasii subsp. spergulariiforme Brown and Wieslander 1922-7-20 88 Lassen Martin Sprs. Eagle Lake Comment
  UC773926  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1767 Comment
  UC850047  Polygonum douglasii subsp. spergulariiforme M. S. Baker and F. Nutting 1894-1 Lassen Lassen Co. Comment
  UC1101117  Polygonum persicaria Malcolm A. Nobs and S. Galen Smith 1949-8-20 1472 Lassen 1 mi s Milford; Honey Lake Valley Comment
  CHSC58506  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 1992-7-3 5049 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1 mi N of Cameron Meadow. 1950 Comment
  CHSC61055  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1993-8-3 5748 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Locally abundant in small patches of more or less bare ground along the E side of the swamp. 1932 Comment
  UC1258493  Polygonum polygaloides subsp. confertiflorum G. Schoolcraft 1980-7-16 313 B Lassen Nelson Corral Reservoir area; Bureau of Land Management 1804 Comment
  UC1520661  Polygonum polygaloides subsp. confertiflorum Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9466 Lassen along US 395 5.6 km (3.5 mi) s Madeline; Madeline Plains 1620 Comment
  CHSC27120  Polygonum polygaloides subsp. kelloggii Robert A. Schlising 1978-6-29 3297 Lassen E of Eagle Lake; dry creek bed just N of Murrers Meadow and Spring. In area of Pinus jeffreyi forest. 1536 Comment
  UC1136191  Polygonum polygaloides subsp. kelloggii A. Simontacchi 1940-5-21 760 Lassen 4.1 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  RSA122845  Polygonum sawatchense L. R. Short 1936-5-22 6025 Lassen Burgess Spring, Exp Range. 1837 Comment
  RSA466330  Polygonum sawatchense J. T. Howell 1934-7-6 12528 Lassen Harvey Valley Comment
  UC6701  Polygonum sawatchense subsp. sawatchense M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Valley Comment
  UC465764  Polygonum shastense Franklin P. Nutting Lassen Silver Lake Comment
  SBBG119830  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy 36, ca. 0.25 air mi SW of the Susan River, ca. 8 air mi SW of Susanville 1433 Comment
  CAS-BOT-BC420977  Polygonum spergulariiforme Clarence R. Quick 1964-7-29 64 -87 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CHSC112799  Polypogon monspeliensis Lowell Ahart; John Dittes 2013-7-22 18874 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1100382  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-7-20 1052 Lassen four mi w Adin Comment
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Jun 24 2009
  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
  JEPS96122  Porterella carnosula Vernon H. Oswald and Lowell Ahart 1996-6-24 7854 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), w side Papoose Meadows, ca 0.3 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1483818  Porterella carnosula G. Schoolcraft 1980-7-16 318 Lassen Nelson Corral Reservoir 1804 Comment
  UC1573183  Porterella carnosula Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9007 Lassen road from Bieber to Lookout 0.5 mi s Modoc County Line (Big Valley, Pit River Watershed); Pit River Watershed, Big Valley 1249 Comment
  UC526144  Porterella carnosula John Thomas Howell 1934-7-7 12466 Lassen near Feather Lake; near Feather Lake Comment
  SEINET10460820  Porterella carnosula Taylor 1988-6-6 Taylor 9007 Lassen Road from Bieber to Lookout, 0.5 miles south of the Modoc County Line 1250 Comment
  CHSC4839  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
  JEPS103225  Potamogeton alpinus subsp. tenuifolius G. Schoolcraft 1996-9-11 2564 Lassen Willow Creek below petroglyphs and above dam 1432 Comment
  JEPS109625  Potamogeton diversifolius Dean W. Taylor 2002-6-21 18177 Lassen stock pond ca. 1 mile SW of McCleland Reservoir 1584 Comment
  CHSC4840  Potamogeton filiformis R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  SEINET3892719  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field.; 0 1280 Comment
  UC2046022  Potamogeton natans Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11167 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. Comment
  UC1099819  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1491 Lassen 1 mi s Doyle; Long Creek Comment
  UC1100077  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-30 8196 Lassen w end of Tule Lake Comment
  UC60851  Potamogeton striatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3357 Lassen marsh near Amedee; Honey Lake Valley Comment
  CAS-BOT-BC540031  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
  JEPS44188  Potentilla fruticosa Brown and Wieslander 1922-7-25 4 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  POM366534  Potentilla glandulosa subsp. ashlandica Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1136906  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1767 Comment
  UC1136994  Potentilla millefolia George A. Fischer, Irwin H. Johnson 1933-7-14 F 240 Lassen Patterson R. S. Lassen National Forest, Patterson R. S. 1737 Comment
  CAS-BOT-BC158516  Potentilla millefolia 1927-6-10 7 Lassen Lassen National Forest, Norval Flat 1747 Comment
  JEPS126563  Poterium sanguisorba Lowell Ahart, John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC30570  Prunella vulgaris Sori H. Shad 1970-6-24 31 Lassen Collected in upper Murrer's Meadow. 1524 Comment
  CAS-BOT-BC159778  Prunus andersonii Paul Gallian; B. J. Cox 1971-6-2 486 Lassen 5 miles South of Milford near Honey Lake on U.S. Hwy. 395 1249 Comment
  CHSC71098  Prunus andersonii Vernon H. Oswald; Lowell Ahart 1998-5-22 9119 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  OBI77048  Prunus andersonii Anthony Baniaga 2011-7-1 412 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  SEINET3157217  Prunus andersonii E. K. Balls 1950-5-9 15947 Lassen 6 mi S of Doyle, hwy 395 1372 Comment
  CDA34466  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. 0 Comment
  SEINET3850947  Prunus virginiana Dwayne Estes 2004-1 06028 Lassen SE side of Horse Lake along E roadside 1554 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-BC357282  Pseudognaphalium microcephalum Margaret Williams 1974-7-27 74 -L-54 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC239800  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51997 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC239804  Pseudoroegneria spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi. W. of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  UC1143002  Pseudoroegneria spicata subsp. spicata August L. Hormay 1934-5-15 Lassen 15 mi n of Hall's Flat (Lassen Forest and Range Experiment Station, Lassen National Forest); Lassen Forest and Range Experiment Station, Lassen National 1524 Comment
  UC718009  Pseudoroegneria spicata subsp. spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada 1341 Comment
  JEPS51149  Pseudostellaria jamesiana Brown and Wieslander 1922-7-28 51 Lassen Martin Sprs. Eagle Lake; , Martin Sprs Comment
  UC1136876  Pseudostellaria jamesiana L. R. Short and Wm. Gansberg 1936-6-16 S- 438 Lassen Burgess Spring Experimental Range; Lassen Forest 1883 Comment
  CAS-BOT-BC174802  Pseudostellaria jamesiana Mrs. H. C. Cantelow 1949-6-11 7 Lassen Summit of Fredonyer Pass 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
  CHSC27600  Psilocarphus brevissimus var. brevissimus J. D. Prouty 1978-6-28 4 Lassen Lower Dry Lakes, SE of Eagle L. Comment
  POM27927  Psoralidium lanceolatum Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CAS-BOT-BC72538  Pteridium aquilinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49175 Lassen Elysian Valley northwest of Janesville 1325 Comment
  HSC89839  Pteridium aquilinum var. pubescens Gary Schoolcraft 1980-8-13 353 Lassen N side of Diamond Mtn. on timber sale site 189 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
  RSA32005  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles E of Westwood 1524 Comment
  UCD91531  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area. 1981 Comment
  CHSC112789  Puccinellia lemmonii Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18788 Lassen Depression, 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. 1007 Comment
  CHSC93243  Puccinellia lemmonii John Dittes; Scott Chamberlain 2004-6-28 1015 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1445 Comment
  CHSC99494  Puccinellia lemmonii Lowell Ahart; John Dittes 2008-6-20 14967 Lassen Saline area, 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
  JEPS114875  Puccinellia lemmonii Lowell Ahart, John Dittes 2008-6-20 14967 Lassen Saline area, 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
  CDA32666  Puccinellia lemmonii Gary Schoolcraft 2000-6-19 2906 Lassen Flat southeast of Ravendale BLM Fire Station. 0 Comment
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  UCR17285  Purshia tridentata Frank C. Vasek 1975-7-11 750711- 36 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC147819  Purshia tridentata var. tridentata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16321 Lassen Along California Highway 36, about 6 miles W of Susanville Comment
  CAS-BOT-BC147821  Purshia tridentata var. tridentata Alice Eastwood; John Thomas Howell 1940-6-16 8341 Lassen Janesville Comment
  CAS-BOT-BC147823  Purshia tridentata var. tridentata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49161 Lassen Elysian Valley northwest of Janesville 1325 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
  UC12421  Purshia tridentata var. tridentata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC773873  Purshia tridentata var. tridentata L. R. Short and Wm. Gansberg 1936-7-9 S- 482 Lassen Burgess Spring Experimental Range; Lassen National Forest 1792 Comment
  UC73543  Pyrola picta Milo S. Baker 1890-1 Lassen Milford Comment
  OBI75873  Pyrola picta Anthony Baniaga 2011-8-10 496 Lassen Lassen Natl Forest. About 1/4 mi SE of Swain Mdw, S of Robbers Ck. Swain Mtn quad T29N R8E sec 35 NE of SW 1721 Comment
  UC412673  Pyrola picta Franklin P. Nutting Jul 1928 Lassen Mts. S of Eagle Lake Comment
  HSC81545  Pyrrocoma carthamoides var. cusickii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6049 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC35837  Pyrrocoma carthamoides var. cusickii M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  CAS-BOT-BC362262  Pyrrocoma carthamoides var. cusickii Clarence R. Quick 1964-7-29 64 -91 Lassen Blacks Mt. Experimental Forest 1798 Comment
  POM39972  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1584018  Pyrrocoma hirta var. lanulosa G. Schoolcraft 1990-8-1 2119 Lassen about 1 mi s Heath Reservoir 1737 Comment
  CHSC52666  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains. 1614 Comment
  CHSC91924  Pyrrocoma lucida L. P. Janeway 2005-7-31 8512 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  CHSC5250  Quercus kelloggii P. Balch 1955-7-25 Lassen Eagle Lake. Roop Mt. Rd., 5 mi from Susanville. 1828 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
  UC1187154  Quercus vacciniifolia Jean Langenheim 1957-6-22 4371 Lassen nw Said Valley, ne part of Lassen County Said Valley Comment
  CAS-BOT-BC104477  Quercus vacciniifolia C. Hart Merriam 1925-8-22 s.n. Lassen Summit, between Butte Creek Meadows and Lake Almanor Comment
  CHSC23897  Ranunculus aquatilis var. capillaceus George Ellmore 1973-7-7 7318 Lassen In bottom of Dixie Springs. 1581 Comment
  CHSC8742  Ranunculus aquatilis var. capillaceus S. Chulasmai 1966-5-13 34 Lassen Vernal pool, (Johnstonville). Comment
  UC1537334  Ranunculus aquatilis var. capillaceus Gordon H. True Jr. 1936-6-21 515 Lassen Honey Lake Valley; in deeper sloughs 1219 Comment
  NY493017  Ranunculus aquatilis var. diffusus B. M. Bartholomew 1988-7-22 4504 Lassen Mosquito Creek ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  CHSC4982  Ranunculus cymbalaria R. Clicquennoi 1967-6-24 53 Lassen In meadow, 4 mi e of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 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
  CHSC27662  Ranunculus cymbalaria var. saximontanus Robert A. Schlising 1978-7-27 3320 Lassen E side of Eagle Lake. Pasture. Comment
  JEPS97783  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  RSA293370  Ranunculus cymbalaria var. saximontanus Reino Alava 1957-7-5 1135 Lassen Along Highway no. 395, 4.4 miles S of Ravendale. Comment
  UC1537331  Ranunculus cymbalaria var. saximontanus Gordon H. True Jr. 1936-6-26 544 Lassen Honey Lake Valley-Willow Creek Valley Road 1524 Comment
  CHSC61175  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald; Lowell Ahart 1993-5-12 5383 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, along Pine Creek. 1737 Comment
  UC118184  Ranunculus occidentalis T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  JEPS107460  Ranunculus occidentalis var. occidentalis Lowell Ahart, John Dittes 2005-6-1 11857 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  RSA0062308  Ranunculus occidentalis var. occidentalis Lowell A. Ahart, John Dittes 2011-6-20 17479 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC101037  Ranunculus populago John Dittes 2008-5-22 1526 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek. 482 Comment
  SEINET10871347  Ribes Mary Susan Taylor 1974-5-4 Taylor 223 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  JEPS28678  Ribes cereum George W. Gillett 1957-7-26 916 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 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
  CAS-BOT-BC212579  Ribes montigenum Alice Eastwood 1912-8-22 1863 Lassen Trail from Morgan Springs to Lassen Butte Comment
  UC1587075  Ribes roezlii G. Schoolcraft 1991-7-30 2191 Lassen n side Widow Mountain (Bear Spring) 1780 Comment
  CHSC12424  Ribes velutinum Anne Linda Brisk 1969-6-19 1 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC7760  Ribes velutinum Beverly J. Wise 1969-4-21 100 Lassen 2.6 mi south of Susanville on Old Dump Rd. 1341 Comment
  UC1609463  Ribes velutinum Vernon H. Oswald and Lowell Ahart 1993-6-14 5547 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake 1566 Comment
  RSA0023959  Ribes viscosissimum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  JEPS88202  Rigiopappus leptocladus Vernon H. Oswald and Lowell Ahart 1996-6-17 7795 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UC1924227  Rorippa curvipes Debra Valov 2004-6-8 2004247 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC1126739  Rorippa curvisiliqua A. Simontacchi 1940-6-4 806 Lassen 14.8 mi w Harvey Mountain Lookout; Halls Flat Quad., Lassen National Forest Comment
  POM312442  Rorippa sinuata Verne Grant, Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  CHSC5002  Rosa woodsii subsp. ultramontana K. C. Newman 1967-6-30 27 Lassen Collected ca. 2 mi. NW of ELBS on the other side of the lake in the Merrill Burn area. 1554 Comment
  JEPS114901  Rosa woodsii var. ultramontana Lowell Ahart, John Dittes 2008-6-20 14972 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-BC148391  Rubus leucodermis John Thomas Howell; Gordon H. True 1973-8-1 50248 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1950 Comment
  CHSC23481  Rubus leucodermis Wayne O. Baum 1971-7-5 71 -84 Lassen E. slope of Gallatin Peak. 2072 Comment
  CHSC6261  Rubus leucodermis P. Balch 1955-7-20 Lassen Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville. 1615 Comment
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC19712  Rubus parviflorus M. S. Baker 1890-1 Lassen Milford Comment
  POM91623  Rubus parviflorus var. bifarius Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC465808  Rumex crispus J. Burtt Davy Jun 17 1897-Jun 24 1897 3378 Lassen Honey Lake Valley Comment
  CAS-BOT-BC433245  Rumex crispus Louella Bass 1973-6-15 EV- 108 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC433632  Rumex lacustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13266 Lassen Along United States Highway 395, 11.8 miles north-east of Litchfield Comment
  UC1594642  Rumex occidentalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5122 Lassen 1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on logging road paralleling the e side Bridge Creek); Bridge Creek 1719 Comment
  UCR67452  Rumex salicifolius George K. Helmkamp 1990-9-23 G- 14 Lassen north of Ravendale 1677 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
  CHSC58852  Rumex salicifolius var. triangulivalvis Vernon H. Oswald; Lowell Ahart 1992-7-16 5123 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. Common on drier parts of a marshy meadow. 1719 Comment
  CAS-BOT-BC434261  Rumex triangulivalvis John Thomas Howell 1975-7-23 51404 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  CAS-BOT-BC434263  Rumex triangulivalvis Annie M. Alexander; Louise Kellogg 1946-8-11 5153 Lassen Northwest end Grasshopper Valley. Comment
  CAS-BOT-BC109419  Rumex venosus John Thomas Howell 1978-4-19 52865 Lassen Sierra Nevada. Along Highway 395 between Doyle and Milford. Comment
  JEPS87461  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1993-8-3 5753 Lassen n edge Cooper Swamp Cooper Swamp (e of Silver Lake just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); e of Caribou Wilderness, , e of Silver La 1932 Comment
  CAS-BOT-BC445707  Sagittaria latifolia B. Anthony 1967-7-8 s.n. Lassen Murrer's Meadow, ca 3 mi. from Eagle Lake Biological Station 1493 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
  HSC26528  Salix lasiandra J. P. Smith, J. O. Sawyer 1972-5-6 5239 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  CAS-BOT-BC128170  Salix lasiandra var. lasiandra John Thomas Howell; Gordon H. True 1973-8-1 50149 Lassen Transition Zone forest in areas of granitic rock, Gold Run Creek road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  CAS-BOT-BC124634  Salix lemmonii John Thomas Howell 1976-7-20 52016 Lassen along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC124637  Salix lemmonii M. B. Kildale 1926-9-11 2788 Lassen Susanville 1524 Comment
  JEPS78095  Salsola tragus Gary W. Zamzow 1972-7-18 84 Lassen beside Highway 395, 3 mi n Hallelujah Junction; n of Hallelujah Junction 1371 Comment
  UC104453  Salvia aethiopis T. Brandegee 1892-6-30 Lassen streets of Susanville Comment
  UC585164  Salvia dorrii var. dorrii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1739 Lassen mountain above Red Rock 1432 Comment
  UC1523804  Sambucus mexicana Gary Schoolcraft 1982-8-4 850 Lassen on road to Hayden Hill about 1/2 mi s Hwy 139 (37-10-29) 1524 Comment
  JEPS5934  Sambucus racemosa var. microbotrys Frances D. Payne 1929-7-12 80 Lassen Lost Lake Warner Mountains (se extremity of mts.) 2286 Comment
  RSA74137  Sanicula tuberosa M. S. Baker 1952-5-23 12426 Lassen Hwy 36 E of Chester Comment
  CAS-BOT-BC110336  Sarcobatus vermiculatus Louella Bass 1982-6-20 s.n. Lassen West of Karlo. Comment
  UC1136501  Sarcobatus vermiculatus E. Sawyer 1935-6-27 216 Lassen Sierraville Quad., Long Valley Comment
  SEINET10532872  Sarcobatus vermiculatus Mary Susan Taylor 1982-6-12 Taylor 4650 Lassen 4010 ft. T28N R14E se sec 3. Standish quad. Alkali flats in Hartson Lake Refuge, 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville. 1222 Comment
  HSC17990  Sarcodes sanguinea M. S. Baker 1890-3 Lassen Honey Lake Valley 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
  UC1609185  Saxifraga aprica Vernon H. Oswald and Lowell Ahart 1993-5-12 5373 Lassen sw side of Hwy 44 (0.9 mi nw of its intersection with A21 (to Westwood)) 1737 Comment
  JEPS47551  Saxifraga oregana Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  UC1567432  Schoenoplectus acutus var. occidentalis G. Schoolcraft 1989-7-31 1998 Lassen along A27 about 8 mi e Susanville; e of Susanville 1243 Comment
  POM123064  Schoenoplectus maritimus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC99154  Scirpus acutus var. occidentalis Lowell Ahart; John Dittes 2008-6-22 15018 Lassen On the east end of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC1100867  Scirpus americanus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1470 Lassen 1 mi s Milford (Honey Lake Valley); , s of Milford Comment
  UC2119  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3291 Lassen beside sloughs Honey Lake Valley, beside sloughs Tule Confederacy (Tule Confederacy, Honey Lake Valley) Comment
  UC1100881  Scirpus nevadensis Verne Grant and Irving Schneider 1947-9-5 8376 Lassen nw shore Eagle Lake (by Sam Webb's place; Spaulding); nw shore Eagle Lake by Sam Webb's place Comment
  UC1609484  Scirpus nevadensis Vernon H. Oswald and Lowell Ahart 1993-6-14 5521 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake 1566 Comment
  CAS-BOT-BC240002  Scribneria bolanderi Alice Eastwood; John Thomas Howell 1940-6-11 7974 Lassen Big Valley Mts. Comment
  CHSC66422  Scribneria bolanderi Vernon H. Oswald; Lowell Ahart 1996-6-17 7804 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On a flat on the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 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
  JEPS11413  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  RSA165466  Scrophularia lanceolata Clare B. Hardham 1961-6-17 7531 a Lassen Rte 395 Alturas Susanville Road 1524 Comment
  SEINET3861523  Scutellaria holmgreniorum Noel H. Holmgren, Patricia K. Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy-395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale.; 0 1585 Comment
  CAS-BOT-BC214262  Scutellaria nana G. Schoolcraft 1986-6-18 1630 Lassen S. side of Smoke Creek between Shinn & Smoke Creek Ranches 1493 Comment
  HSC82199  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6054 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  POM252832  Scutellaria nana A. A. Heller 1938-6-23 15186 Lassen 1 mile south of Westwood. 1524 Comment
  SBBG125002  Scutellaria nana C. B. Hardham -Jun-2000 Lassen Gold Run Crk, S of Susanville Comment
  SEINET13947826 Image available Scutellaria nana Clarence R. Quick 1964-1 64 -92 Lassen Cal Mt. E of Poison Lake; ca 5800 ft alt. 1768 Comment
  CDA2409  Secale cereale T. C. Fuller 1969-5-22 18481 Lassen Northeast corner of Rair Drive & Main Street, Susanville. 0 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
  NY758141  Sedum lanceolatum J. T. Howell 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2286 Comment
  UC506921  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Lassen Forest 1783 Comment
  CHSC108003  Senecio hydrophiloides Lowell Ahart; John Dittes 2011-6-20 17503 Lassen About 10 yards west 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
  UCD135528  Senecio hydrophiloides Raymond D. Ratliff 1966-6-28 8 Lassen Lassen National Forest, Gooch Valley - Plot 70. 1828 Comment
  HSC95277  Senecio hydrophilus Gordon Leppig 1998-8-17 1057 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET10799223  Senecio integerrimus Billy Joe Cox 1971-6-2 Cox 2993 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
  CAS-BOT-BC363855  Senecio integerrimus var. exaltatus A. M. Vollmer; L. Beane 1953-7-1 71 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  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
  RSA0125038  Senecio integerrimus var. exaltatus A. A. Heller 1938-6-4 15143 Lassen In the yellow pine forest west of Fredonyer pass on State Highway #36. 1737 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
  CDA8680  Senecio serra T. C. Fuller 1959-7-7 4726 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  CHSC26149  Senecio triangularis Detzer; Sacks 1977-7-24 1 Lassen Along streambank, ca. 3 mi se of Milford, .5 mi. se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  RSA518886  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  CHSC76260  Sesuvium verrucosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8217 Lassen Field about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  JEPS117478  Setaria viridis Lowell Ahart, John Dittes 2010-8-31 17139 Lassen On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley 1276 Comment
  CHSC100133  Shepherdia argentea L. P. Janeway 2008-8-2 9526 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Tanch Road 1.8 km west of the CA-NV line. 1349 Comment
  HSC100806  Sidalcea glaucescens Lowell Ahart, John Dittes 2010-7-31 17016 Lassen S side of road, ~50 yd. E of culvert, where road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1516 Comment
  JEPS117494  Sidalcea glaucescens Lowell Ahart, John Dittes 2010-7-31 17016 Lassen On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1143016  Sidalcea glaucescens August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn; Lassen National Forest, nw of Black's Mtn 1706 Comment
  CHSC83236  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). Streambed. 1950 Comment
  JEPS15485  Sidalcea oregana subsp. oregana Joseph and Hilda Grinnell 1938-6-13 1099 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  UC619263  Sidalcea oregana subsp. oregana J. and H. W. Grinnell 1938-7-13 1099 Lassen near Ravensdale; near Ravensdale 1554 Comment
  UC871446  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen 1 mi w Bieber (overflow of Pit River); Pit River Comment
  POM260336  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA25322  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UC1537657  Sidalcea oregana subsp. oregana Gordon H. True Jr. 1937-7-10 789 Lassen rocky mesa near Skeedaddle; near Skeedaddle 1493 Comment
  UC18864  Sidalcea oregana subsp. spicata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  SCFS927  Sidalcea oregana subsp. spicata L. Loeblich 1964-7-1 72 Lassen Along Hwy 299 going W, 0.5 mi W of jct of A-2 and Hwy 139 1250 Comment
  UC1125817  Silene bernardina A. Simontacchi 1940-7-3 928 Lassen 2.3 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1844 Comment
  CDA24107  Silene douglasii T. C. Fuller 1963-7-15 10898 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  CHSC59709  Silene menziesii Mary Meyer 1980-7-28 Lassen 2148 Comment
  SD61034  Silene menziesii Darley F. Howe 1964-8-1 3908 Lassen Parsnip Creek, Warner Mountains, Modoc National Forest. 1830 Comment
  CHSC106846  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen Ridge of Diamond Mts ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville. 2255 Comment
  UC1137897  Silene nuda E. Sawyer 1935-7-8 274 Lassen 7 3/4 mi ene Loyalton; Sierraville Quad., ene of Loyalton Comment
  CAS-BOT-BC389544  Silene nuda Paul F. Covel 1937-7-19 755 Lassen Westwood Airport Comment
  SJSU10112  Silene nuda J. W. Tilden 1960-6-27 1502 Lassen foot of Moonlight Rd near Westwood 1524 Comment
  UC8482  Silene occidentalis subsp. occidentalis Milo S. Baker 1896-7-30 Lassen Silver Lake Comment
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Sep 9 2015
  CDA18271  Silene verecunda subsp. andersonii G. D. Barbe 1974-8-2 1936 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UC1126792  Sisymbrium altissimum E. Sawyer 1935-6-27 224 Lassen Long Valley 1310 Comment
  SEINET11987253  Sisymbrium altissimum J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4135 Lassen 65 mi S of Alturas, along edge of hwy #395 Comment
  UC1032501  Sisyrinchium bellum A. Simontacchi 1940-6-15 863 Lassen 2.3 mi ssw of Black Mountain; Lassen National Forest 1798 Comment
  SBBG128753  Sisyrinchium bellum L. Ahart, J. Dittes 2008-6-20 14964 Lassen ca. 10 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  UC1542947  Sisyrinchium idahoense var. idahoense G. Schoolcraft 1987-6-23 1749 Lassen along Ash Valley Rd. Ash Valley 1554 Comment
  POM82470  Sium suave Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC21380  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
  CAS-BOT-BC34688  Solanum lycopersicum J. H. Thomas 1969-9-7 15468 Lassen Susanville. Near center of town in disturbed fields, near a drivein. 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
  CHSC4987  Solanum triflorum R. Clicquennoi 1967-7-1 56 Lassen 2 mi w of Murrer's Ranch turnoff, 14.9 mi w of Murrer's Ranch turnoff [sic], 14.9 mi from Susanville, highway 139. 1463 Comment
  CDA8717  Solidago californica Gary Schoolcraft 1994-8-29 2426 Lassen About 1 mile west of Susanville up Piute Creek. Comment
  CHSC116096  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2015-7-13 20304 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
  CDA37488  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC66285  Sparganium emersum subsp. emersum Vernon H. Oswald; Lowell Ahart 1996-6-24 7871 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  POM119382  Sparganium eurycarpum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  NY482319  Spergularia diandra G. Schoolcraft 1998-6-8 2734 Lassen N. base of Ft. Sage Mtns. 1249.7 Comment
  CAS-BOT-BC149623  Spiraea douglasii Louella Bass 1973-6-17 EV - 118 Lassen Elysian Valley 1325 Comment
  UC729643  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen between Grassy Lake and Snag Lake; Mt. Lassen National Park Comment
  UC845562  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen meadow about 1 mi e Westwood 1524 Comment
  CHSC5277  Stachys ajugoides var. rigida P. Balch 1955-7-17 Lassen Papoose Creek, near Gallatin's. Eagle Lake. 1615 Comment
  JEPS63054  Stachys ajugoides var. rigida Brown and Wieslander ca. 1914 57 Lassen near Eagle Lake; Martin Sprs. Comment
  CDA25155  Stanleya viridiflora L. Bass 1982-7-25 Oct- 82 Lassen Near Karlo, about 12 miles north of Litchfield. Comment
  SEINET5337330  Stellaria longipes C. G. Gulling 1905-1 1551 Lassen Big Meadows 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
  CHSC229  Stellaria longipes var. longipes 1944-6-30 Lassen Grasshopper Valley near Eagle Lake. 1615 Comment
  CDA8837  Stephanomeria exigua S. E. Piper 1943-7-3 Lassen Sierra Ordnance Depot, Herlong. 0 Comment
  UC768667  Stephanomeria exigua subsp. coronaria Robert F. Hoover 1940-10-1 4651 Lassen Johnstonville Comment
  HSC83372  Stephanomeria lactucina R. W. Becking 1987-7-29 Lassen Lassen National Forest, Caribou Wilderness, Gem Lake Comment
  CDA18266  Stephanomeria spinosa G. D. Barbe 1974-8-2 1929 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC322924  Stephanomeria tenuifolia Louella Bass No date on label. s.n. Lassen Elysian Valley, Sierra Nevada Comment
  HSC79992  Stipa comata William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UCR119159  Stipa nevadensis Beecher Crampton 1960-6-18 5729 Lassen Warner Mountains, Southern edge of mountains, 1.25 miles north of Blue Lake in vicinity of Blue Lake Ranch. 1982 Comment
  JEPS102871  Streptanthella longirostris Vernon H. Oswald 2001-6-2 10039 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  CAS-BOT-BC519057  Streptopus amplexifolius Alice Eastwood 1912-8-22 1765 Lassen Trail to Sulphur Mine from Morgans, Lassen Butte Region Comment
  HSC22877  Stuckenia pectinata John Pratt 1970-6-14 13 Lassen Comment
  CHSC64784  Suaeda moquinii Vernon H. Oswald 1995-6-7 6835 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. Flat near the railroad. 1231 Comment
  JEPS114622  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
  UC1123452  Swertia albicaulis var. albicaulis A. Simontacchi 1940-6-6 823 Lassen 3.6 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  CHSC27669  Swertia albicaulis var. nitida Robert A. Schlising 1978-7-9 3312 Lassen S of Eagle Lake; forested area between Papoose Meadows and Eagle Lake Road. Comment
  JEPS126467  Symphoricarpos albus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-11 CA 350 -057 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  CAS-BOT-BC269700  Symphoricarpos mollis Louella Bass 1973-6-23 132 Lassen Elysian Valley 1325 Comment
  UC1120025  Symphoricarpos mollis A. Simontacchi 1940-6-24 890 Lassen 6.4 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1950 Comment
  CHSC36147  Symphoricarpos rotundifolius var. rotundifolius George Deniso 1978-7-21 95 Lassen Several meters S of Colman Lake, SE of Eagle L., 1962 Comment
  CHSC66381  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald; Lowell Ahart 1996-6-17 7801 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. 1420 Comment
  CHSC5024  Symphoricarpos vaccinioides L. G. Bennett 1967-7-17 182 Lassen 20 yards from shore of Mahogany Lake, near entrance rd. 2060 Comment
  UC773956  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1792 Comment
  CHSC72216  Symphyotrichum campestre Vernon H. Oswald 1998-9-14 9623 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  CAS-BOT-BC97917  Symphyotrichum frondosum John Thomas Howell 1934-7-8 12508 Lassen [Spalding's] Spalding, Eagle Lake Comment
  CHSC59076  Symphyotrichum frondosum Vernon H. Oswald; Lowell Ahart 1992-8-25 5185 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1851 Comment
  CHSC66848  Symphyotrichum frondosum Vernon H. Oswald 1996-9-21 8286 Lassen Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. On the S edge of Willow Creek ca. 1 mi E of the parking area on the highway. 1490 Comment
  JEPS95902  Symphyotrichum frondosum Lowell Ahart and Vernon H. Oswald 1999-9-13 8210 Lassen just S of the parking area, about 1 mi S of the sign in station, Honey Lake Wildlife Area, 5 1/2 mi (air) SE of Standish 1207 Comment
  CHSC92950  Symphyotrichum spathulatum var. spathulatum L. P. Janeway 2005-7-31 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
  JEPS122175  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-8-20 19720 Lassen 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. Comment
  UCD136663  Symphyotrichum spathulatum var. yosemitanum Barbara L. Wilson; R. Brainerd, D. Lytjen, et al. 2004-8-24 11184 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. 1463 Comment
  CAS-BOT-BC238510  Synthyris missurica John Thomas Howell 1934-6-14 12119 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  RSA324710  Taeniatherum caput-medusae A. Tiehm, James Young, Raymond Evans 1984-6-7 8597 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  UCD86203  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 Lassen open hillside, edge of valley plain, ca. 4 mi SE/Susanville, Lassen Co. Comment
  SEINET10617707  Taraxacum californicum David B. Dunn, Billy Joe Cox 1971-1 Lassen Comment
  SEINET10826287  Taraxacum californicum David B. Dunn, Billy Joe Cox 1971-1 Lassen Comment
  CHSC5219  Taraxacum officinale J. Wolf 1946-6-23 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  UC1136807  Taraxacum officinale L. R. Short and W. McNulty 1936-6-17 Lassen Burgess Spr. Exp. Range Lassen Forest 1795 Comment
  CHSC68753  Taraxia subacaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8521 Lassen Small impoundment on Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi northeast of Hwy. 139. 1731 Comment
  JEPS94483  Taraxia subacaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8521 Lassen 3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04 1731 Comment
  CHSC4967  Taraxia tanacetifolia R. Carter 1967-6-23 547 Lassen In upper part of Murrer's Meadow. 1584 Comment
  CHSC7773  Taraxia tanacetifolia Beverley J. Wise 1969-5-18 70 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On the east side of Willow Creek. 1524 Comment
  UC1523755  Taraxia tanacetifolia Gary Schoolcraft 1981-8-11 557 Lassen Said Valley Reservoir 1615 Comment
  CDA37990  Taraxia tanacetifolia T. C. Fuller 1959-7-7 s.n. Lassen Highway 395, 0.8 mile south of Termo. 0 Comment
  CAS-BOT-BC329049  Tetradymia canescens John Thomas Howell 1961-9-25 36972 Lassen East side of Beckwourth Pass 1554 Comment
  RSA252490  Tetradymia canescens R. F. Thorne, C. W. Tilforth 1969-9-6 39265 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  UC1136973  Tetradymia canescens L. R. Short 1936-9-13 S 503 Lassen Burgess Spring Experimental Range Lassen Forest 1761 Comment
  CDA20359  Tetradymia glabrata D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC33334  Tetradymia glabrata Hank Thompson 1980-4-14 20 Lassen Ca. 24 mi E of Susanville. 1402 Comment
  CHSC5220  Tetradymia glabrata J. B. Kimsey 1946-6-17 Lassen Horse Lake. 1554 Comment
  JEPS17744  Tetradymia glabrata Rimo Bacigalupi with G. T. Robbins 1955-7-21 5415 Lassen 4.3 mi e junction with U. S. 395 (along the Smoke Creek Ranch road, s edge of Secret Valley); Secret Valley 1441 Comment
  POM252875  Tetradymia glabrata A. A. Heller 1938-6-23 15205 Lassen near Mapes on US Highway 395 1311 Comment
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Jun 1 2009
  SD87577  Tetradymia glabrata Frank W. Peirson 1926-6-24 6854 Lassen Madeline Plains. Comment
  SFV11003  Tetradymia glabrata J. Turner, F. M. Ball (1191) 1962-7-12 s. n. Lassen Highway 395 near Ravendale. 57 miles south of Alturas. 1616 Comment
  UC1567439  Tetradymia glabrata G. Schoolcraft 1989-5-31 1881 Lassen near Skedaddle Creek crossing (Sand Pass Rd) 1249 Comment
  UC91602  Tetradymia glabrata T. S. Brandegee 1892-7-22 Lassen Honey Lake Comment
  RSA94936  Tetradymia glabrata F. W. Peirson 1926-6-24 6854 Lassen On Madeline Plain Comment
  JEPS28448  Thalictrum sparsiflorum George W. Gillett 1957-7-24 897 Lassen Cameron Meadow Lassen Volcanic National Park 1950 Comment
  CAS-BOT-BC88084  Thelypodium flexuosum G. Schoolcraft 1980-5-16 s.n. Lassen Southeast of Wendel. 1219 Comment
  UC1479578  Thelypodium flexuosum Gary Schoolcraft 1980-5-16 233 Lassen e. side Honey Lake (n.e. of Amedee Hot Springs) 1219 Comment
  CDA25198  Thelypodium integrifolium subsp. complanatum T. C. Fuller 1980-8-6 20321 Lassen 0.3 km south of Smoke Creek Ranch Road, 2 km west of the state line, Rush Creek drainage. 0 Comment
  CAS-BOT-BC207182  Thinopyrum intermedium subsp. intermedium John Thomas Howell 1975-7-23 551396 Lassen Susanville - Sierra Nevada 1295 Comment
  JEPS114452  Thlaspi arvense Lowell Ahart, John Dittes 2008-6-20 14961 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
  JEPS94831  Thysanocarpus curvipes Vernon H. Oswald and Lowell Ahart 1998-5-22 9129 Lassen 5 mi ne of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  NY732815  Thysanocarpus curvipes N. H. Holmgren 1980-7-4 9505 Lassen Observation Peak, south side of the mountain, 18 km (11 mi) air distance east of Ravendale 1890 Comment
  POM95124  Thysanocarpus curvipes var. curvipes Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  HSC28503  Tiquilia nuttallii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19287 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC303063  Tofieldia occidentalis subsp. occidentalis Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC6276  Toxicoscordion venenosum var. venenosum J. B. Kimsey 1946-6-1 Lassen Aspen Grove, Pine Creek. 1584 Comment
  JEPS117497  Tragopogon dubius Lowell Ahart, John Dittes 2010-7-31 16998 Lassen 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
  CAS-BOT-BC377076  Tragopogon dubius Louella Bass 1973-5-29 83 Lassen Elysian Valley 1325 Comment
  CHSC5028  Tragopogon pratensis L. B. Barlow 1967-7-6 103 Lassen 2 mi. west of Murrer's Ranch turn off, 14.9 mi. north of Susanville, Highway 139. 1463 Comment
  CHSC117523  Trichostema oblongum Lowell Ahart; John Dittes 2016-7-13 21122 Lassen West edge 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) southwesst of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS88216  Trichostema oblongum Vernon H. Oswald and Lowell Ahart 1996-6-24 7858 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, on w side of Papoose Meadows 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  SBBG119831  Trichostema simulatum L. Ahart 2003-8-17 10514 Lassen E side of Hwy 36, ca. 0.25 air mi SW of the Susan River, ca. 8 air mi SW of Susanville 1433 Comment
  UCD125893  Trichostema simulatum Lowell Ahart 1974-7-9 526 Lassen along Eagle Lake Road, about 3 miles west of Susanville. 1584 Comment
  UCD117583  Trientalis latifolia W. W. Robbins 1926-4-17 517 Lassen Grass Valley. Comment
  UC1184054  Trifolium andersonii var. andersonii Jean Langenheim 1957-6-26 Lassen NW Said Valley Lassen County, northeastern part Comment
  CHSC77214  Trifolium beckwithii G. Schoolcraft 1993-6-10 2289 Lassen N of Clark's Valley Rd. e of Red Rock Lake. 1828 Comment
  CHSC110888  Trifolium cyathiferum Lowell Ahart; John Dittes 2012-7-9 18304 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
  POM260739  Trifolium cyathiferum Alice Eastwood, John T. Howell 1940-6-11 7990 Lassen Big Valley Mountains. Comment
  JEPS127180  Trifolium eriocephalum subsp. cusickii Lowell Ahart, John Dittes 2016-7-15 21231 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC117267  Trifolium eriocephalum var. cusickii Lowell Ahart; John Dittes 2016-7-15 21231 Lassen About 80 yards west of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  CHSC66724  Trifolium hybridum Vernon H. Oswald; Lowell Ahart 1996-8-1 8115 Lassen N. shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Da on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  UCSC011016  Trifolium longipes subsp. hansenii Lowell Ahart, John Dittes 2016-7-15 21230 Lassen About 80 yards west of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber; 41.183167 -121.036972 1268 Comment
  CHSC67223  Trifolium macrocephalum James D. Jokerst 1991-5-29 3304 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CHSC71127  Trifolium macrocephalum Vernon H. Oswald; Lowell Ahart 1998-5-22 9090 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  JEPS94126  Trifolium macrocephalum Vernon H. Oswald and Lowell Ahart 1998-5-22 9090 Lassen Hwy. 36 between Fredonyer Summit and Susanville (0.4 mi. w. of the Susan R. and Bizz Johnston Trail) 1417 Comment
  UCD111322  Trifolium macrocephalum Brad D. Schafer 2003-5-24 124 Lassen Two miles southeast of Red Rock Valley. 1889 Comment
  POM313551  Trifolium macrocephalum A. Hormay 1929-5-20 10337 Lassen Lassen National Forest Comment
  CHSC68864  Trifolium productum Vernon Oswald; Lowell Ahart 1997-6-24 8636 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
  CHSC5293  Trifolium repens P. Collett 1946-6-19 Lassen Willow Creek valley. 1463 Comment
  NY717607  Trifolium variegatum H. D. D. Ripley 1943-6-13 5690 Lassen Near Milford 1265 Comment
  UC1025069  Trifolium wormskioldii Leo Whitney 1933-8-9 1501 Lassen ca 8 mi nw Eagle Lake (spring at head of Slate Creek); Lassen National Froest 1920 Comment
  CAS-BOT-BC451769  Triglochin maritima Alice Eastwood 1912-8-22 1800 Lassen Morgans Springs, Lassen Butte Region Comment
  CHSC117530  Triglochin scilloides Lowell Ahart; John Dittes 2016-7-13 21141 Lassen Scattered along the southwest edge of the pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC60928  Triglochin scilloides Vernon H. Oswald; Lowell Ahart 1993-7-8 5645 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. Beds of drainages and pools in meadow. 1709 Comment
  HSC81712  Tripterocalyx crux-maltae Diane Williams 1986-5-25 Lassen E of Honey Lake at Winterfat Flat Comment
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Jan 27 2013
  CAS-BOT-BC199574  Trisetum canescens John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49437 Lassen Elysian Valley, west of Janesville 1325 Comment
  POM114350  Trisetum canescens Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  RSA79411  Triteleia bridgesii E. K. Balls 1952-5-24 17251 Lassen Ash Creek Public Camp, along Ash Creek, off road from Adin to Madeline. 1524 Comment
  JEPS64211  Triteleia hyacinthina Brown and Wieslander 1922-7-18 56 Lassen near Susanville (Martin Sprs); Martin Springs Comment
  JEPS64214  Triteleia hyacinthina C. S. Robinson, G. S. Crew 1927-7-15 55810 Lassen Feather Lake Lassen National Forest, Feather Lake (sw Lassen County) 1737 Comment
  UC421857  Triteleia hyacinthina J. Burtt Davy Jun 17 1897-Jun 24 1897 3386 Lassen Adobe Meadows Honey Lake Valley Comment
  CAS-BOT-BC522004  Triteleia hyacinthina Alice Eastwood; John Thomas Howell 1940-6-11 7970 Lassen Big Valley Comment
  CAS-BOT-BC522007  Triteleia hyacinthina Arnold Tiehm; Jan Nachlinger; Margaret Williams 1988-6-2 11705 Lassen East side of Snowstorm Mountain, 18.1 road miles north of the Wendel Road on highway 395 from Susanville to Alturas 1402 Comment
  RSA0008977  Triteleia hyacinthina Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  SEINET10872223  Triteleia montana Mary Merello 1993-6-28 Merello 757 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  RSA722571  Triticum aestivum R. R. Halse 2006-8-3 6991 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  SEINET3125312 Image available Triticum aestivum Richard R. Halse 2006-1 6991 Lassen Modoc National Forest, along Blue Lake Road north of Blue Lake, about 15 miles ESE of Likely. 1860 Comment
  UC1241787  Typha latifolia Malcolm A. Nobs and S. Galen Smith 1949-8-20 1474 Lassen nw shore Honey Lake (Honey Lake Valley, one mi s of Milford); Honey Lake Valley Comment
  UC1924206  Urtica dioica Debra Valov 2005-8-19 2005217 Lassen Eagle Lake; Hwy 139. Mi. marker 25 1554 Comment
  CAS-BOT-BC404118  Urtica dioica subsp. holosericea John Thomas Howell 1976-7-19 51991 Lassen On Gold Run Creek southwest of Susanville 1386 Comment
  JEPS9178  Utricularia macrorhiza J. B. Davy June, 1897 3339 Lassen Honey Lake Comment
  UC35006  Utricularia macrorhiza J. Burtt Davy Jun 17 1897-Jun 24 1897 3339 Lassen w. end of lake Honey Lake Valley 1219 Comment
  HSC95175  Utricularia minor Gordon Leppig, J. Cromwell 1997-7-27 614 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS87182  Utricularia minor Vernon H. Oswald and Lowell Ahart 1992-7-16 5117 Lassen betw. Old Station and Susanville (w. of Cinder Pit on logging rd. paralleling e. side of Bridge Creek, 1.3 mi. n. of Hwy. 44 & McCoy Flat Reservoir, swamp on Bridge Creek) 1719 Comment
  JEPS51165  Vaccaria hispanica W. L. Jepson 1918-8-2 7797 Lassen Honey Lake Valley; Raker Ranch 1219 Comment
  CHSC77275  Vaccinium cespitosum Loren Gehrung 1999-10-9 133 Lassen Caribou Wilderness. East shore of Jewel Lake. 2100 Comment
  SD7779  Vaccinium uliginosum Mrs. R. M. Austin 1882-1 Lassen Willow Lake Comment
  CAS-BOT-BC530502  Veratrum californicum Clare B. Hardham 1971-8-22 18371 Lassen near snow banks 2346 Comment
  CDA6408  Verbascum thapsus Yeager 1929-8-29 Lassen Honey Lake. 0 Comment
  CHSC36442  Veronica americana Theresa Coasta 1982-6-4 37 Lassen Along Willow Creek in Murrers Upper Meadow. Comment
  CHSC60423  Veronica americana Mary Ann Showers 1992-6-28 2649 Lassen Lassen Volcanic National Park. Pond below Windy Point, west of Mill Creek. 1950 Comment
  CHSC91308  Veronica arvensis Lowell Ahart; John Dittes 2005-6-1 11903 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  RSA715625  Veronica arvensis L. Ahart, John Dittes 2005-6-1 11903 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  CDA6486  Veronica catenata Vernon Oswald 1994-9-6 6470 Lassen Willow Creek Wildlife Area on Highway 139, ca. 10 miles (air) north of Susanville. Comment
  CDA6488  Veronica catenata Vernon Oswald 1994-9-6 6470 Lassen Willow Creek Wildlife Area on Highway 139, ca. 10 miles (air) north of Susanville. Comment
  RSA0039526  Veronica catenata Lowell A. Ahart, John Dittes 2012-7-9 18286 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
  SEINET10499925  Veronica peregrina David B. Dunn 1956-7-3 Dunn 11924 A Lassen Alkaline sink by roadside, extra runoff from hwy 395. 11 Mi s of madeline. Comment
  CHSC60860  Veronica peregrina subsp. xalapensis Vernon H. Oswald; Lowell Ahart 1993-6-28 5590 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1719 Comment
  CHSC66269  Veronica peregrina subsp. xalapensis Vernon H. Oswald; Lowell Ahart 1996-6-24 7874 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
  CHSC77238  Veronica peregrina subsp. xalapensis G. Schoolcraft 1998-6-10 2292 Lassen East of Red Rock Lake N. of County Rd 512. 1828 Comment
  JEPS28646  Veronica peregrina subsp. xalapensis George W. Gillett 1957-7-22 875 Lassen Snag Lake, near the south shore, Lassen Volcanic National Park Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  JEPS28987  Veronica serpyllifolia subsp. humifusa Frances D. Payne 1929-7-12 96 Lassen e side and at southern end of Warner Range (in Upper Silver Creek); , Upper Silver Creek 2438 Comment
  CHSC83990  Vicia americana var. americana K. R. Stern 1967-6-24 2407 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  HSC97155  Vicia americana var. americana L. Ahart 2005-6-1 11866 Lassen 1/2 mile west of Scott Rd., Long Valley, about 2 air miles NW of the intersection of Scott Rd. and Hwy. 70. 3.9 air miles NW of Hallelujah Junction 1449 Comment
  NY716241  Vicia americana var. americana G. Schoolcraft 1982-7-6 761 Lassen Fort Sage Mountains 1920 Comment
  UC1731085  Vicia americana var. americana Dean W. Taylor 1974-6-14 3709 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  POM28600  Vicia americana var. americana Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  CHSC4833  Viola bakeri R. Carter 1967-7-14 598 Lassen S side of rd. 3.5 mi e of Silver Lake between rd (31NO7) and Susan River. 1828 Comment
  CHSC12746  Viola beckwithii P. Fehr 1974-4-14 2 Lassen 860 Cherry Terrace, Susanville. 1389 Comment
  CHSC7181  Viola beckwithii Lynn R, Thomas 1969-4-17 95 Lassen Ca. 200 yds. up hillside e of Rice Canyon Rd., 5 mi n of junction with 'back road to Litchfiend'. Ca. 12 mi e of Susanville. 1310 Comment
  UC1137742  Viola beckwithii L. R. Short 1936-4-28 S 328 Lassen Harvey Valley; Lassen National Forest 1706 Comment
  UC1567387  Viola lobata subsp. integrifolia G. Schoolcraft 1989-5-8 1869 Lassen SW slope of Hayden Hill. 1798 Comment
  CDA34519  Viola purpurea B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  CHSC23555  Viola purpurea subsp. dimorpha W. O. Baum 1971-6-21 22 Lassen E slope of Gallatin Peak. 1920 Comment
  CHSC7741  Viola purpurea subsp. dimorpha Beverley J. Wise 1969-4-21 121 Lassen 4 mi. south of Susanville on Las. Co. Rd. 204 (Gold Run Road). 1310 Comment
  CHSC58047  Viola purpurea subsp. integrifolia Vernon H. Oswald 1992-6-1 4962 Lassen Lassen Volcanic National Park. Juniper Lake Rd., 2.1 mi N of the park boundary, at the western-most of three ponds and swales along this section of road. 2084 Comment
  POM85345  Viola purpurea subsp. venosa Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UCD164663  Viola purpurea subsp. venosa R. John Little; Cynthia Little 1991-7-4 6616 -b Lassen Lassen National Forest. R8E T33N 0.9 mile from jct of 35N04 and 33N02 on 33N02. Prob. S28. (Exact location unknown. Coordinates estimated by label maker). 1676 Comment
  JEPS107303  Vulpia microstachys var. pauciflora Lowell Ahart, John Dittes 2005-6-1 11876 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, about 3.7 miles (air) northwest of Hallelujah Junction 1461 Comment
  UCD55298  Vulpia myuros var. hirsuta Ellen Dean; Gary Schoolcraft 2006-5-16 3119 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1283 Comment
  SDSU13739  Wyethia mollis D. F. Howe 1964-8-2 3922 Lassen East Creek, Warner Mts., Modoc National Forest. 1981 Comment
  UC506932  Wyethia mollis George A. Fischer and Irwin N. Jolinson 1933-7-12 F- 239 Lassen Lassen Forest 1737 Comment
  UC89850  Wyethia mollis T. S. Brandegee 1882-6-26 Lassen Milford Comment
  CAS-BOT-BC383489  Wyethia mollis David D. Keck; J. Clausen 1935-6-25 3765 Lassen 2 mi. W. of Fredonia Pass, between Susanville and Westwood 1524 Comment
  CAS-BOT-BC383490  Wyethia mollis George W. Gillett 1957-7-29 957 Lassen Lassen Volcanic National Park. Snag Lake. Dry slopes near the Butte Lake trail above Snag Lake 1859 Comment
  SEINET10914998  Wyethia mollis Jeffrey Huber 1971-6-2 Huber 109 Lassen 4 mi. S of Adin along Calif. Hwy. 139 in basalt-clay; valley floor in Artemisia. 1341 Comment
  UCD32664  X Pseudelymus saxicola Beecher Crampton 1954-7-5 2062 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CAS-BOT-BC454212  Zannichellia palustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13257 Lassen Along United States Highway 395, 7.1 miles west of Standish Comment
  UCD58789  Zannichellia palustris Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  CAS-BOT-BC533048  Zigadenus paniculatus Doris Kildale Gillespie 1930-5-15 9384 Lassen 5 miles west of Susanville Comment
  CAS-BOT-BC533050  Zigadenus paniculatus Louella Bass 1980-1-1 s.n. Lassen Sierra Nevada, Lassen College Campus, Susanville Comment



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