Search Results — 2000 specimen records retrieved (1622 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/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UCD133116  Abies concolor Beecher Crampton 1960-6-18 5711 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  CHSC6219  Abies magnifica P. Balch 1955-6-1 Lassen Silver Lake. 1981 Comment
  CDA23835  Abronia turbinata S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 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
  SEINET10473515  Achillea lanulosa Mary Susan Taylor 1974-1 Taylor 286 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC28647  Achillea millefolium John Thomas Howell 1976-7-19 51958 Lassen SW of Susanville on Gold Run Road 1341 Comment
  CHSC60271  Achillea millefolium P. V. Caldwell 1972-6-23 245 Lassen Headwaters of Willow Creek, Upper Murer's Meadow. Comment
  UC1131588  Achnatherum hymenoides E. Sawyer 1935-6-27 232 Lassen Long Valley Sierraville Quadrangle Comment
  UC1024755  Achnatherum lemmonii Leo Whitney 1933-7-15 2297 Lassen 25 mi w of upper end of Eagle Lake (Hall's Flat); Lassen National Forest 1737 Comment
  UCD50617  Achnatherum lemmonii Beecher Crampton 1960-6-18 5717 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC216802  Achnatherum occidentale John Thomas Howell 1934-7-6 12431 Lassen Hall's Flat Comment
  SEINET7593424 Image available Achnatherum occidentale John Thomas Howell 1934-1 12431 Lassen Hall's Flat Comment
  CAS-BOT-BC216456  Achnatherum occidentale subsp. californicum Clare B. Hardham 1971-8-22 18413 Lassen Diamond Mountain 2346 Comment
  RSA129521  Achnatherum occidentale subsp. californicum L. R. Short, Wm Gansberg 1936-6-2 S- 366 Lassen MDM, Burgess Spr. Exp. Range 1859 Comment
  UC773979  Achnatherum occidentale subsp. californicum L. R. Short and Wm. Gansberg 1936-6-2 S- 366 Lassen Burgess Spring Experiment Range Lassen Forest 1858 Comment
  RSA582082  Achnatherum occidentale subsp. occidentale J. T. Howell 1934-7-6 12431 Lassen Hall's Flat. Comment
  CAS-BOT-BC218609  Achnatherum occidentale subsp. pubescens John Thomas Howell 1976-7-20 52003 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek, Sierra Nevada 1432 Comment
  UC1137654  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 218 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest 1722 Comment
  UC1137656  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 F 199 Lassen Grass Valley Lassen National Forest 1696 Comment
  UCD18960  Achnatherum occidentale subsp. pubescens Raymond D. Ratliff 1965-7-12 16 Lassen Lassen National Forest, Harvey Valley Allotment (HV-81-76 and 21-15). 1737 Comment
  UCD18961  Achnatherum occidentale subsp. pubescens Raymond D. Ratliff 1965-7-12 15 Lassen Lassen National Forest, Harvey Valley Allotment and Champ's Flat Allotment (HV 81-76 and CF 81-9). 1737 Comment
  UCD51224  Achnatherum occidentale subsp. pubescens A. A. Beetle 1944-8-17 3040 Lassen 8 miles northeast of Susanville. Comment
  SEINET235273 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC1031354  Achnatherum thurberianum Leo Whitney 1935-6-19 3258 Lassen 13 mi w of upper end Eagle Lake; Lassen National Forest, Ashurst Mt. 1584 Comment
  UCD32677  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen Lassen County, 7 miles north of Madeline, along US highway 395, roadside. 1524 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UC579786  Achnatherum webberi David D. Keck and J. Clausen 1935-6-24 3749 Lassen 2 mi s, on borders of an alkali mud flat Ravendale 1465 Comment
  SBBG67342  Acmispon americanus S. W. Hutchinson -Jun-1925 539 Lassen Eagle Lake region 1554 Comment
  CHSC29897  Acmispon americanus var. americanus Robin L. Ondricek 1978-7-7 91 Lassen Below the dam in Murrers Upper Mdw. 1548 Comment
  CHSC30681  Acmispon americanus var. americanus M. S. Taylor 1974-7-10 281 Lassen In meadow, ca. 0.5 mi e of Gallatin Beach, ca. 0.5 mi s of Eagle Lake, ca. 12 mi ne of Susanville. 1524 Comment
  CHSC117223  Acmispon denticulatus Lowell Ahart; John Dittes 2016-6-7 20996 Lassen West of the pond, 110 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bierber, 7.3 Miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 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
  UC465624  Aconitum columbianum Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC391607  Actaea rubra John Thomas Howell; Gordon H. True 1973-8-1 50164 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  JEPS124517 Image available Adonis aestivalis D. Griffiths 1967-7-12 179 Lassen 3 miles north of Willow Creek Camp. On Hiway 139. 100 yards east of road. Comment
  SEINET4339237  Aegilops triuncialis G. Schoolcraft 1997-6-26 2603 Lassen 1.2 mile north of Susanville, west of Highway 395 1326 Comment
  CHSC12937  Agastache parvifolia J. Pitts 1972-6-23 263 Lassen Exit of Bly Tunnel, Upper Murrer Meadow. Comment
  JEPS87414  Agastache parvifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5619 Lassen e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering Pine Creek); ne end of Little Harvey Valley, Pine Creek 1737 Comment
  UC882898  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen 39 mi n Susanville; Grasshopper Valley 1524 Comment
  CDA40751  Agastache parvifolia T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20381 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  POM70458  Agastache urticifolia Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  POM1922B  Ageratina occidentalis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC91811  Agoseris glauca G. Douglas Barbe 1974-8-20 1922 Lassen Upper Lond Valley. Hallelujah Junction, northwest corner of jct. of US Hwy 395 and Hwy 70. 1524 Comment
  RSA0065401  Agoseris glauca M. P. Harthill 1971-6-21 223 Lassen Ravendale. Comment
  CHSC64836  Agoseris glauca var. glauca Vernon H. Oswald 1995-6-26 6944 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
  RSA715616  Agoseris glauca var. glauca L. Ahart 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC29394  Agoseris grandiflora var. grandiflora M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixie Mt. Dixie Mt. Comment
  CHSC68840  Agoseris heterophylla Vernon Oswald; Lowell Ahart 1997-6-24 8601 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. (20N10). 1655 Comment
  JEPS107468  Agoseris monticola Lowell Ahart, John Dittes 2005-6-1 11851 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
  UC1143046  Agoseris parviflora L. R. Short and J. Warren 1936-6-5 S- 372 Lassen Burgess Spring Experimental Range Lassen National Forest 1798 Comment
  UC584270  Agoseris parviflora G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2325 Lassen about 1 mi below summit Black Mt. 1940 Comment
  UC1776674 Image available Agoseris parviflora G. Schoolcraft 1994-7-7 2365 Lassen About 1 miles west of Boot Lake 219 Comment
  CAS-BOT-BC13412  Agoseris retrorsa A. A. Heller 1940-5-22 15644 Lassen Hill above Westwood Cemetary 1524 Comment
  CAS-BOT-BC110735  Agropyron James Jokerst 1983-7-25 1894 Lassen Near Madelin Plains. 1614 Comment
  CAS-BOT-BC127582  Agropyron cristatum Margaret Williams 1974-8-4 74- 4 -78 Lassen Sierra Nevada. Burned area near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  UCD149818  Agropyron cristatum subsp. pectinatum Harry George 1965-6-1 s.n. Lassen Susanville Airport. Comment
  CDA1692  Agropyron desertorum G. D. Barbe 1974-8-2 1933 Lassen Hallelujah Junction, US 395 at Hwy 70, northwest corner. Comment
  CHSC66418  Agropyron desertorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7800 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Ca.0.1 mi E of Devils Corral Trialhead. 1420 Comment
  UC1137133  Agrostis alba August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest, Bogard Ranger Station Comment
  CAS-BOT-BC127239  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50182 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  JEPS121247  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards S of the man-made pond, about 120 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley. Comment
  RSA129563  Agrostis exarata L. R. Short 1936-8-21 499 Lassen Burgess Spr. Exp. Range. 1799 Comment
  UC1100103  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen 4 mi n Madeline Comment
  UC1142988  Agrostis exarata A. L. Hormay 1941-6-25 21 Lassen Burgess Spring Lassen Forest 1676 Comment
  UC53515  Agrostis exarata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CAS-BOT-BC139292  Agrostis idahoensis G. Schoolcraft 1994-8-1 2383 Lassen About 2 miles west of Boot Lake. 2255 Comment
  CAS-BOT-BC139297  Agrostis idahoensis John Thomas Howell 1973-7-10 49767 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  UC1024638  Agrostis pallens Leo Whitney 1934-7-10 2225 Lassen meadow near Harvey Spring (ca 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  UCD53173  Agrostis pallens L. Whitney 1933-8-7 2194 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  UCD53246  Agrostis pallens L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 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
  POM98581  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
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Apr 23 2013
  CAS-BOT-BC138625  Agrostis stolonifera John Thomas Howell 1973-7-10 s.n. Lassen Sierra Nevada. In city park, Susanville. 1295 Comment
  CAS-BOT-BC138626  Agrostis stolonifera G. Schoolcraft 1999-9-8 2884 Lassen Along Susan River west of Susanville. 1341 Comment
  CAS-BOT-BC246539  Agrostis stolonifera Leland S. Smith 1919-8-10 1132 Lassen Modoc National Forest, Ash Valley - Templeton's Meadow 1463 Comment
  SEINET4342189  Agrostis stolonifera B. L. Wilson, D. Lytjen 2005-7-25 11489 Lassen Deep Creek, near confluence with a smaller stream 1359 Comment
  JEPS28055  Agrostis thurberiana George W. Gillett 1957-7-28 925 -a Lassen upper end Butte Lake (trail to Widow Lake above junction with Snag Lake trail, 100 yds above trail junction); Lassen Volcanic National Park 1859 Comment
  UCD149882  Aliciella leptomeria Harry George 1967-6-14 s.n. Lassen Hartson Reservoir. 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
  CHSC29882  Allium acuminatum Robin L. Ondricek 1978-6-6 36 Lassen One me S of Colley Point Overlook on Hwy 139. 1670 Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 Comment
  CHSC7661  Allium acuminatum Beverley J. Wise 1969-5-18 138 Lassen 17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  CAS-BOT-BC459569  Allium acuminatum G. Schoolcraft 1986-5-19 1574 Lassen North slope of Bald Mtn., Susanville 1280 Comment
  HSC69609  Allium anceps Gary Schoolcraft 1980-4-30 215 Lassen N base of Shaffer Mtn. near Shaffer Well 1354 Comment
  SD6424  Allium anceps Mrs. R. M. Austin 1879-1 Lassen No further location information given on label. Comment
  SEINET3883805  Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Highway 395, 3.0 miles south of Ravendale.; 0 Comment
  RSA367053  Allium bisceptrum Rockwell 1925-01 s.n. Lassen Eagle Lake. Comment
  POM110069  Allium lemmonii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  POM260464  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET3878885  Allium platycaule D. W. McNeal 1983-6-6 2844 Lassen In a dry wash below Horse Lake Rd. (Lassen Co.Rd #536), 5.3 mi NE of the jct. of Hwy #139.; 0 Comment
  UC1299751  Allium tolmiei var. tolmiei Freed W. Hoffman 1946-6-9 731 Lassen on Highway 395 about 10 mi s Alturas; Dry Creek Comment
  RSA0011565  Alopecurus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46987 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  HSC22949  Alopecurus aequalis John Pratt 1970-6-21 35 Lassen 1707 Comment
  HSC63950  Alopecurus aequalis Teresa Prendusi 1980-7-9 1115 Lassen Horse Camp Spring, approximately 39 mi. N of spring 1707 Comment
  UCD55821  Alopecurus aequalis Mrs. Austin 1894-6-1 s.n. Lassen Willow Creek Valley. Comment
  CHSC110894  Alopecurus carolinianus Lowell Ahart; John Dittes 2012-7-9 18289 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
  JEPS107365  Alopecurus pratensis Lowell Ahart, John Dittes 2005-6-1 11868 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
  RSA715541  Alopecurus pratensis L. Ahart 2005-6-1 11686 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
  UCD55918  Alopecurus saccatus P. B. Kennedy 1927-6-13 s.n. Lassen Pit River. Comment
  SEINET3871758  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles E of Sierra Valley.; 0 1584 Comment
  CAS-BOT-BC42863  Ambrosia acanthicarpa R. E. Frenkel 1964-10-1 916 Lassen On California Hwy. 36, 1 mile east of California Hwy 44, west of Susanville 1493 Comment
  UC859331  Amelanchier A. A. Heller 1938-6-4 15144 Lassen about 1 mi e Fredonyer Pass 1706 Comment
  SEINET3391171  Amelanchier alnifolia E. D. McArthur 1982-1 EDM- 1360 Lassen NW of Janesville at Jct of Co Ros 205 & 219 Comment
  RSA122200  Amelanchier pallida L. R. Short 1936-5-22 349 Lassen Lassen Forest, Burgess Springs Exp. Range. 1860 Comment
  CAS-BOT-BC142539  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  CAS-BOT-BC142543  Amelanchier utahensis Alice Eastwood 1912-8-22 1807 Lassen Trail from Morgans Springs to Lassen Butte Comment
  UC1127823  Amelanchier utahensis A. Simontacchi 1940-6-4 796 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1828 Comment
  UC773882  Amelanchier utahensis L. R. Short 1936-5-22 S- 349 Lassen Burgess Spring Experiment Range; Forest Lassen 1859 Comment
  CAS-BOT-BC28272  Amphiscirpus nevadensis John Thomas Howell 1934-7-8 12506 Lassen Spalding's, Eagle Lake Comment
  CHSC109980  Amphiscirpus nevadensis Richard R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca. 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CAS-BOT-BC28271  Amphiscirpus nevadensis William Anderson 1963-6-25 s.n. Lassen Dakin unit, Honey Lake Refuge. Comment
  CHSC99501  Amsinckia menziesii Lowell Ahart; John Dittes 2008-6-20 14909 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
  CDA40473  Amsinckia menziesii var. menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  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
  UC1167764  Amsinckia tessellata var. tessellata Peter H. Raven with Otto T. Solbrig 1958-6-17 13276 Lassen 19.0 mi s Ravendale (along US Hwy 395) Comment
  UC585123  Amsinckia tessellata var. tessellata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1747 Lassen e facing slope of gully on mountain above Red Rock 1432 Comment
  CHSC27616  Ancistrocarphus filagineus Robert A. Schlising 1978-6-8 3287 Lassen E of Eagle Lake and N of Murrers Upper Meadow. 1536 Comment
  CHSC64748  Ancistrocarphus filagineus Vernon H. Oswald 1995-5-31 6809 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi E of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CAS-BOT-BC15606  Ancistrocarphus filagineus Alice Eastwood; J. T. Howell 1940-6-16 8354 Lassen Constantia Comment
  CHSC71067  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9121 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CAS-BOT-BC63951  Antennaria argentea A. M. Vollmer; L. Beane 1953-7-1 101 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC36440  Antennaria argentea Jeff Megorden 1981-6-13 4 Lassen NE side of Galletin Peak. 1584 Comment
  CHSC5194  Antennaria argentea A. Santos 1946-6-14 Lassen Spalding's, Eagle Lake. 1558 Comment
  UC1523709  Antennaria argentea Gary Schoolcraft 1981-7-8 501 Lassen north of Coulthurst Flat 1828 Comment
  CAS-BOT-BC63952  Antennaria argentea H. D. Ripley; R. C. Barneby 1944-5-29 5958 Lassen Susanville Comment
  SEINET6735052 Image available Antennaria corymbosa B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11496 Lassen Blue Door Flat, seven or eight miles east of HWY 295 on county road 510 1774 Comment
  CAS-BOT-BC59220  Antennaria dimorpha James Jokerst 1983-5-31 1792 Lassen Grasshopper Valley Quad. Near Madeline Plains 1583 Comment
  CHSC7640  Antennaria dimorpha Beverley J. Wise 1969-4-13 11 Lassen 5.6 mi east of junction of Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1463 Comment
  OBI77058  Antennaria dimorpha Anthony Baniaga 2011-6-5 305 Lassen Lassen NF. Pine Crk Valley N side. Pine Crk Valley quad. T32N R8E sec 35 SW of SW 1725 Comment
  UC585078  Antennaria dimorpha E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1755 Lassen nw-facing slope of ridge e of Redrock 1600 Comment
  HSC69048  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Schaffer Mtn. about 1/2 mile west of Hwy. 395 1463 Comment
  CAS-BOT-BC69135  Antennaria geyeri Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CHSC68841  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1997-7-24 8591 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  SEINET3145605  Antennaria geyeri M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  UC1609103  Antennaria geyeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5584 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  CAS-BOT-BC69140  Antennaria geyeri Clarence R. Quick 1964-7-29 64 -89 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CAS-BOT-BC58688  Antennaria luzuloides Louella Bass 1974-6-2 EV 135 Lassen Elysian Valley 1325 Comment
  CDA10077  Antennaria luzuloides L. Ahart, J. Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. Comment
  UC506930  Antennaria luzuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 241 Lassen below Patterson R. S.; Lassen National Forest 1737 Comment
  UC773953  Antennaria luzuloides L. R. Short and J. Warren 1936-6-23 S- 452 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1741 Comment
  UC1523728  Antennaria rosea Gary Schoolcraft 1982-7-14 800 Lassen w of Constantia 1524 Comment
  UCD149585  Antennaria rosea G. Ledyard Stebbins 1982-9-16 C 247 Lassen Vicinity of Eagle Lake. Comment
  RSA125375  Anthoxanthum aristatum P. H. Raven, Otto T. Solbrig 1958-6-16 13228 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  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
  UC1537515  Apocynum cannabinum Gordon H. True Jr. 1937-7-10 782 Lassen Bull Flat, Refuge 1Q 1524 Comment
  POM99591  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC4273  Aquilegia formosa var. truncata K. R. Stern 1967-6-24 2404 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  RSA0129905  Arabis lemmonii var. depauperata Clare B. Hardham 1961-6-16 7442 Lassen Diamond Peak, Lassen/Plumas counties. Comment
  NY119617  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83226 Lassen Above Laufman Ranger Station, Plumas National Forest, 4.5 miles E of U.S. Hwy. 395 Comment
  SEINET1916077  Arceuthobium abietinum R. L. Mathiasen 2010-1 1061 Lassen 0.3 km W of Fredonyer Pass on Rte. 36; On Abies Iowiana 1660 Comment
  SEINET2471272  Arceuthobium abietinum R. L. Mathiasen 2008-9-15 2008 -27 Lassen 12.8 km S. of jct. of Westwood Road on State Route 44 1720 Comment
  SEINET7263418  Arctostaphylos patula E. Murin 1967-5-20 s.n. Lassen Eagle Lake road at Galleton turnoff west of Susanville Comment
  CAS-BOT-BC42166  Arctostaphylos patula subsp. patula Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16319 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  CHSC25747  Arctostaphylos patula subsp. patula John Steiner 1977-6-14 73 Lassen Lassen Volcanic National Park. 250 m NE Manzanita Lake and 250 m E Lassen Park boundry. 1768 Comment
  CHSC36979  Arenaria 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
  CHSC72309  Arenaria aculeata L. P. Janeway; Glenn Clifton 1998-7-9 5738 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  JEPS117259  Arenaria congesta var. congesta Lowell Ahart, John Dittes 2010-7-31 17011 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
  SEINET530728  Arenaria congesta var. lithophila Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  UC8098  Arenaria congesta var. subcongesta M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CHSC91923  Arenaria kingii var. glabrescens L. P. Janeway; B. Castro 2005-7-10 8484 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  RSA11786  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3345 Lassen Hills north of Susanville Comment
  JEPS124519 Image available Argemone platyceras var. hispida P. C. Billigs 1965-7-12 77 Lassen 1.8 mi south of MIlford on Hwy 395 Comment
  UC71725  Argemone rotundata Mrs. M. H. Manning 1902-9-1 1 Lassen Reno Nevada to Amadee California Amadee Comment
  CHSC59072  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1992-8-25 5192 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. 1851 Comment
  CHSC66713  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1996-8-1 8109 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  SBBG128899  Arnica chamissonis L. Ahart,J. Dittes 2008-6-20 14902 Lassen ca. 150 yards SW of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CDA10117  Arnica cordifolia T. C. Fuller 1963-7-15 10896 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  SEINET3082318 Image available Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen Yellow Pine Forest, 1 mile east of Fredonyer Pass, on State Highway #36. 1740 Comment
  RSA455868  Arnica longifolia Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC89756  Arnica mollis L. P. Janeway 2004-6-26 8166 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UC1776719  Arnica parryi G. Schoolcraft 1997-8-1 2386 Lassen About 2 miles W of Boot Lake 2255 Comment
  UC29582  Arnica sororia M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Mts. Comment
  JEPS103204  Arnica sororia G. Schoolcraft 1994-6-9 2346 Lassen West of Hwy. 139 near Grasshopper valley 1706 Comment
  SEINET2164570  Artemisia arbuscula subsp. arbuscula Unknown 1985-6-23 8603 Lassen 41 miles north of Susanville on hwy 395 1430 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
  HSC68803  Artemisia cana subsp. bolanderi Gary Schoolcraft 1979-10-3 198 Lassen In Dry Valley 1/4 mi. west of Dry Valley Gap 1616 Comment
  UC217077  Artemisia cana subsp. bolanderi H. M. Hall 1921-9-10 11673 Lassen Madeline Plains Comment
  CAS-BOT-BC84828  Artemisia cana subsp. cana Ernest C. Twisselmann 1961-7-21 6572 Lassen Harvey Valley 1981 Comment
  UC1567427  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen w of Susanville (along BJ Trail at Hobo Camp.) 1310 Comment
  SEINET6775481 Image available Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near intersection of Wingfield and Bass Hill Roads 1323 Comment
  CHSC42149  Artemisia ludoviciana C. E. Laver 1985-7-15 Lassen Ca. 7.8 mi E of Madeline and 4 mi N of Spooner Reservoir. 1584 Comment
  JEPS37008  Artemisia ludoviciana subsp. incompta W. L. Jepson 1918-8-4 7809 Lassen Horse Lake 1554 Comment
  SEINET7153235 Image available Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains e. of Ravendale. 1628 Comment
  JEPS37022  Artemisia nova R. F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  CHSC7634  Artemisia rothrockii Beverley J. Wise 1969-4-13 12 Lassen 2.9 mi east of the junction of Hwy 395 on Las. Co. Rd.338. 1463 Comment
  CHSC76080  Artemisia tridentata subsp. tridentata Lowell Ahart; Vernon H. Oswald 1999-9-13 8202 Lassen On the west side of the dirt road and 1/4 mile south of the sign-in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  JEPS37010  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7819 Lassen Madelin Plains 1615 Comment
  SEINET195656  Artemisia tridentata subsp. tridentata G. Thomas Robbins 1945-10-18 2157 Lassen Lassen National Forest; Harvey Valley 1676 Comment
  JEPS37040  Artemisia tridentata subsp. vaseyana L. S. Smith 1918-8-11 1026 Lassen nw of Lost Lake and Buchorn (Hat) Mt.; Modoc National Forest, Camp One 2468 Comment
  SEINET3397741  Artemisia tridentata subsp. vaseyana Unknown 1994-1 s.n. Lassen Sage Hen Summit - US 395 Comment
  JEPS124637 Image available Artemisia vulgaris Dixie Funnell 1965-7-13 137 Lassen Growing under bridge about 4 feet from the water. Highway 299, under bridge 705 for pit overflow. Comment
  JEPS127355  Asclepias fascicularis Lowell Ahart, John Dittes 2016-7-13 21150 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS49969  Asclepias fascicularis Brown and Wieslander 1922-7-25 31 Lassen Martin Sprs. Eagle Lake Comment
  POM76177  Asclepias fascicularis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC69211  Astragalus James D. Jokerst 1991-5-28 3299 Lassen Modoc Plateau. Junction Hwy. 395 with Hwy. 36 SE of Susanville, E side of road 150 ft S of junction. 1280 Comment
  CAS-BOT-BC177439  Astragalus andersonii Margaret Williams 1974-7-27 74 -L-55 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 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
  UC84393  Astragalus andersonii T. Brandegee 1892-6-30 Lassen Janesville Comment
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Oct 22 2007
  CAS-BOT-BC177434  Astragalus andersonii John Wynn Gillespie; Doris Kildale Gillespie 1930-5-14 9378 a Lassen 5 miles west of Susanville on Red Bluff road Comment
  NY791374  Astragalus andersonii LeDoux 1973-5-24 861 Lassen Collected at jct. of Highways 70 and 395 at Arco Station. Comment
  SEINET5323325  Astragalus andersonii M. J. Williams 1974-8-4 L- 74 -83 Lassen west of Hwy 395, near Hwy 70 in former burn area 1494 Comment
  CAS-BOT-BC178765  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains N. of Observation Pk. & Horne Ranch Rd. 1645 Comment
  CAS-BOT-BC178768  Astragalus canadensis var. brevidens R. Halse 1991-7-28 4247 Lassen Along State Hwy. 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville. 1558 Comment
  CAS-BOT-BC178766  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. east of Madeline Plains. 1712 Comment
  UCD33606  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  CDA26651  Astragalus curvicarpus T. C. Fuller 1965-6-3 13607 Lassen 1.3 miles west-northwest of Janesville. 0 Comment
  CHSC60738  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-6-14 5519 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (RD. 518, 33N89). 1566 Comment
  CHSC60899  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Edge of woods between the road and railroad. 1709 Comment
  CHSC64875  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald 1995-6-26 6923 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC118788  Astragalus filipes L. P. Janeway; B. Castro 2015-6-5 11758 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
  CHSC29935  Astragalus filipes Robin Ondricek; Robert Ediger 1978-6-6 37 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1670 Comment
  HSC100805  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 Lassen 100 yd. NE of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1521 Comment
  JEPS117260  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 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
  JEPS125804  Astragalus filipes William Harnach 2010-6-8 1244 Lassen Honey Lake Valley, NE of Doyle, 2 miles west of the Nevada state line on Fort Sage Road. Comment
  NY658483  Astragalus filipes G. Schoolcraft 1982-6-22 747 Lassen Ft. Sage Mtns. 1767.8 Comment
  UC1537108  Astragalus filipes Gordon H. True Jr. 1938-7-9 911 Lassen Madeline Plains near Termo; Madeline Plains near Termo 1524 Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  RSA111070  Astragalus filipes H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5675 Lassen South of Constantia. 1463 Comment
  SEINET10903957  Astragalus filipes Williams 1983-7-31 Williams 83 -125-1 Lassen Ash valley road, 17 mi from aden. 1829 Comment
  UCD104699  Astragalus filipes Michael A. Vincent 1999-6-9 8579 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  POM26155  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  RSA121850  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley 1341 Comment
  UC84396  Astragalus gibbsii T. B. 1892-6-26 Lassen Milford Comment
  RSA647557  Astragalus gibbsii Marion P. Harthill 1971-6-20 220 Lassen Ravendale Comment
  JEPS109851  Astragalus inversus Dean W. Taylor 2006-6-29 19560 Lassen Halls Flat; along County Road 111 3.6 miles N of Poison Station (siding)(ca. 12 air miles NE of Old Station) 1706 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
  UC862859  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 60 Comment
  CHSC99508  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
  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
  CHSC106669  Astragalus malacus B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  SEINET4853425  Astragalus pulsiferae var. coronensis Unknown 2001-6-14 28158 Lassen E of Hwy 395, rd to Rams Horn Spring campground. 1540 Comment
  POM24228  Astragalus pulsiferae var. pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC23489  Astragalus purshii Waynes O. Baum 1971-7-16 71 -70 Lassen W. slope of Gallatin Peak. 1981 Comment
  CHSC5282  Astragalus purshii V. Holt 1944-7-9 Lassen Dow Butte. 2042 Comment
  JEPS54815  Astragalus purshii L. S. Smith 1916-5-22 Lassen Honey Lake Comment
  RSA0007957  Astragalus purshii var. lectulus H. D. Ripley, R. C. Barneby 1944-5-30 5983 Lassen 2 miles N of Madeline. 1707 Comment
  CAS-BOT-BC194093  Astragalus purshii var. purshii Doris Kildale Gillespie 1930-5-12 9335 Lassen 2 miles north of Susanville on road to Alturas Comment
  RSA121820  Astragalus purshii var. purshii K. e. Bradshaw 1939-5-27 235 Lassen Black Mountain Experimental Forest, Plot 39-1. 1753 Comment
  CAS-BOT-BC194089  Astragalus purshii var. purshii C. R. Quick 1964-7-28 64 -84 Lassen Edge of Halls Flat , Black's Mt. Experimental Forest Comment
  POM16083  Astragalus purshii var. tinctus M. S. Baker 1894-7-9 s.n. Lassen Dixey Valley Comment
  UC1128894  Astragalus purshii var. tinctus K. E. Bradshaw 1939-5-27 235 Lassen Black Mountain Experimental Forest-Plot 39-1 center of plot Halls Flat Quad., Lassen National Forest Comment
  RSA60318  Astragalus purshii var. tinctus E. K. Balls 1950-5-9 15955 Lassen 0.5 mi. south of Modoc Co. Line, Hwy 395. 1220 Comment
  UC1299224  Astragalus purshii var. tinctus Freed W. Hoffman 1946-6-8 913 Lassen Highway 395 Dry Creek (Dry Creek) 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
  CAS-BOT-BC200875  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 7 miles below Eagle Lake 1524 Comment
  RSA517335  Astragalus whitneyi var. siskiyouensis Barbara J. Ertter, Gary Schoolcraft 1987-6-16 7183 Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  JEPS118271  Athysanus pusillus Lowell Ahart, John Dittes 2011-6-20 17491 Lassen About 40 yards east of the stream, about 70 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
  NY526733  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen 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
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 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
  UCD50220  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  UCD97420  Atriplex hortensis E. K. Balls; P. C. Everett 1952-10-10 18138 Lassen 1.7 miles NE of Standish, Hwy. 395 between Susanville and Alturas. 1249 Comment
  CHSC71872  Atriplex patula var. obtusa Vernon H. Oswald; Lowell Ahart 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  JEPS95903  Atriplex prostrata Lowell Ahart 1999-9-13 8209 Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  CHSC63702  Atriplex rosea Vernon H. Oswald 1994-9-6 6468 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. Common in the parking lot and along the levee road on the N side of the creek. 1490 Comment
  UC219338  Atriplex rosea H. M. Hall 1921-9-11 11682 Lassen s side Honey Lake Valley; s side Honey Lake Valley Comment
  CAS-BOT-BC106491  Balsamorhiza hookeri Louella Bass 1973-6-15 113 Lassen Elysian Valley - Sierra Nevada Comment
  CAS-BOT-BC106494  Balsamorhiza hookeri Clarence Quick 1963-7-12 63 -38 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  JEPS103175  Balsamorhiza hookeri G. Schoolcraft 2000-4-26 2891 Lassen 1.8 miles W of Highway 395 on Shaffer Mountain Road 1554 Comment
  SEINET10859166  Balsamorhiza hookeri David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17769 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  UC1119027  Balsamorhiza sagittata H. P. Hagge 1929-9-11 20 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  NY119710  Barbarea orthoceras N. H. Holmgren 1978-6-11 8919 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi.) E of Ravendale and 22.5 km (14 mi.) airline distance 1680 Comment
  UC1776702  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, Hwy 139 and Eagle Lake Road intersect 1493 Comment
  SEINET10970556  Barbarea orthoceras Katherine L. Morris 1973-5-25 Morris 244 Lassen Collected 13.7 mi nw of the jct of hwy 36 and 44 on hwy 44, in an area of yellow pine, fir, and ribes. Comment
  CHSC31754  Bassia hyssopifolia E. Wolgemuth 1976-8-28 Lassen State Correctional Facility, 8 mi e of Susanville. 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
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  HSC9041  Beckmannia syzigachne Fred Kindel 1955-6-24 Lassen Mt.Meadows Reservoir Comment
  CHSC110167  Berberis aquifolium var. aquifolium V. Lockie 2010-5-1 Lassen Location: Just off of Highway 139, east side of road, approx. 8.25 miles NE of Susanville, CA on Antelope Mountain. 1630 Comment
  CDA20580  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau; Anderson Ranch (southern Lassen County). 1478 Comment
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Aug 25 2008
  NY833352  Berteroa incana A. Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles west of highway 395 on highway 70 then 5.5 road miles north on Scott Road 1494 Comment
  SEINET11193774  Berteroa incana A. Tiehm 2005-1 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles W of Hwy 395 on HWY 70, then 5.5 road miles N on Scott Road. 1494 Comment
  NY526245  Betula glandulosa B. M. Bartholomew 1988-7-22 4500 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  UC1135177  Betula glandulosa D. Dunning 1935-9-5 Lassen Bridge Creek Lassen National Forest, Eagle Lake Quadrangle Comment
  UC1542915  Bidens cernua G. Schoolcraft 1987-9-1 5380 Lassen 3.5 mi w of Madeline (along Ash Valley Road); Ash Valley Road 1639 Comment
  UC1553384  Bidens cernua G. Schoolcraft 1988-8-10 1848 Lassen 10 mi ne of Susanville (along Hwy 139 at Jack's Valley Spring); Highway 139, Jack's Valley Spring 1505 Comment
  CAS-BOT-BC413000  Bistorta bistortoides A. M. Vollmer; L. Beane 1953-7-1 65 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC413084  Bistorta bistortoides George W. Gillett 1957-7-22 882 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake 1850 Comment
  CHSC5031  Bistorta bistortoides L. B. Barlow 1967-7-14 121 Lassen Along Susan River, W. side Calif. State Highway 44. 5 mi. S. Silver Lake Rd. 1828 Comment
  CHSC60760  Bistorta bistortoides Vernon H. Oswald; Lowell Ahart 1993-6-3 5484 Lassen Champs Flat Rd. (Lassen 105), Forest 32N28Y), 2.4 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  HSC23511  Bistorta bistortoides B. Anthony 1967-7-14 290 Lassen 5.3 mi. from jct. of Hwy. 44 and rd. to Silver Lake 1799 Comment
  CAS-BOT-BC127956  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CAS-BOT-BC128045  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3725 Lassen 5 mi. S. of Likely (Modoc Co.) 1402 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
  CAS-BOT-BC128048  Blepharipappus scaber A. M. Vollmer; L. Beane 1953-7-1 99 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC117222  Blepharipappus scaber Lowell Ahart; John Dittes 2016-6-7 20977 Lassen 20 yards west of the pond, along the road to the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC92756  Blepharipappus scaber L. P. Janeway 2005-7-4 8462 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
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May 24 2013
  JEPS88876  Blepharipappus scaber Lauramay T. Dempster 1961-6-17 1669 Lassen about 4 mi sw junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  POM351056  Blepharipappus scaber J. T. Howell 1934-6-10 11894 Lassen Horse Lake Comment
  UC1119057  Blepharipappus scaber A. Simontacchi 1940-7-8 5575 Lassen 5.1 mi s of Jelly Camp (Halls Flat); Halls Flat 1699 Comment
  CAS-BOT-BC127955  Blepharipappus scaber Dr. Jean Linsdale 1929-6-9 s.n. Lassen Pete's Valley Comment
  CAS-BOT-BC13905  Boechera lemmonii Eben McMillan 1968-6-28 140 -2 Lassen South slope of Mount Lassen. Comment
  CHSC60731  Boechera pinetorum Vernon H. Oswald; Lowell Ahart 1993-6-3 5488 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville. ON the E side of the road. 1688 Comment
  CHSC68852  Boechera pinetorum Vernon Oswald; Lowell Ahart 1997-6-24 8622 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. On a roadcut. 2164 Comment
  CAS-BOT-BC14515  Boechera puberula Pauleen Broyles 1977-5-30 143 Lassen Spencer Basin ca. 8 km. north of Herlong. 1770 Comment
  CHSC40526  Boechera retrofracta J. D. Jokerst 1983-5-30 1796 Lassen West of Ash Valley, along the road that leads to Know Mt. ca 1.0 mile north of the road to either Aden or Madeline. Comment
  CHSC60730  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1993-6-14 5512 Lassen Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. Roadside. 1810 Comment
  UC1126590  Boechera retrofracta A. Simontacchi 1940-5-13 699 Lassen 7.5 mi wsw Cone Ranch Hdq.; Lassen National Forest, Halls Flat Quad. 1920 Comment
  UC1553390  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 mi west of Madeline, CA. 1584 Comment
  UC1542746  Boechera sparsiflora Barbara Ertter with Gary Schoolcraft 1987-6-16 7180 Lassen ca 1 mi w Hot Springs VABM (ne side of Honey Lake); Skeedaddle Mountains 1828 Comment
  POM46125  Boisduvalia glabella Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  POM254312  Boisduvalia macrantha Alice Eastwood, John Thomas Howell 1940-6-11 7973 Lassen Big Valley Mountains. Comment
  UC2046019  Bolboschoenus maritimus subsp. paludosus Nick Otting, Carex Working Group 2003-7-19 708 Lassen Modoc Plateau, Biscar Reservoir, 19 air miles northeast of Susanville. Comment
  UC1037276  Brickellia grandiflora Leo Whitney 1934-7-25 1758 Lassen ca. 15 mi w of, Eagle Lake; Lassen National Forest, Crater Mountain 2225 Comment
  RSA0065492  Bromus breviaristatus Marion P. Harthill 1971-6-21 208 Lassen Susanville. Comment
  CHSC27122  Bromus briziformis Robert A. Schlising 1978-6-28 3295 Lassen E of Eagle Lake at Lower Dry Lake. 1645 Comment
  CHSC7689  Bromus briziformis Beverley J. Wise 1969-5-16 125 Lassen 34.5 mi. S. E. of Susanville on Co. Rd 320. (Stacey) 1584 Comment
  SEINET8506610  Bromus briziformis D. W. Taylor 2005-6-29 19380 Lassen Piute Creek, 3 miles West from western edge, Susanville 1311 Comment
  UCD55286  Bromus briziformis Ellen Dean; Gary Schoolcraft 2006-5-16 3105 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  UCD57489  Bromus briziformis A. A. Beetle 1944-8-16 3017 Lassen On east side of Horse Lake. Comment
  RSA0065493  Bromus briziformis Marion P. Harthill 1971-6-21 203 Lassen Susanville. Comment
  CAS-BOT-BC149582  Bromus carinatus var. carinatus Clare B. Hardham 1971-8-22 18403 A Lassen Sierra Nevada. Diamond Mountain. Comment
  UC1137778  Bromus carinatus var. carinatus August L. Hormay 1934-6-30 Lassen Lassen National Forest, Harvey Mountain, Lassen Forest and Range Experiment Station Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  CHSC23516  Bromus carinatus var. marginatus Wayne O. Baum 1971-7-5 71 -13 Lassen E. slope of Gallatin Peak. 1981 Comment
  POM115036  Bromus catharticus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CAS-BOT-BC155325  Bromus inermis John Thomas Howell 1975-7-23 51410 Lassen Sierra Nevada. Along Highway 395 between Johnstonville and Jonesville. 1280 Comment
  JEPS103200  Bromus japonicus G. Schoolcraft 1995-6-6 2492 Lassen Antelope Spring N of Skedaddle Mountains 1524 Comment
  JEPS124392  Bromus japonicus Lowell Ahart, John Dittes 2015-7-13 20310 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  OBI82789  Bromus japonicus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3923 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  UCD58874  Bromus japonicus Beecher Crampton 1954-7-6 2067 Lassen Along U. S. Hwy. 395. 15 miles south of Ravendale. 1676 Comment
  UCR119156  Bromus japonicus Beecher Crampton 1954-7-6 2076 Lassen Modoc Plateau, 15 miles south of Ravendale along US highway 395. 1677 Comment
  UC1024947  Bromus madritensis subsp. rubens Leo Whitney 1935-6-21 3322 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  RSA126867  Bromus marginatus G. A. Fischer, I. H. Johnson 1933-7-12 F 231 Lassen Patterson Flat. Lassen Forest. Comment
  UC1037125  Bromus marginatus Leo Whitney 1935-6-19 3262 a Lassen near Camp 10 (Lassen National Forest, Fruit Grower's Supply Company); Lassen National Forest, Fruit Grower's Supply Company Comment
  CAS-BOT-BC162179  Bromus orcuttianus John Thomas Howell; Gordon H. True 1973-7-31 50029 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1737 Comment
  UC1037142  Bromus orcuttianus Leo Whitney 1935-6-25 3338 Lassen Ashurst Mountain Comment
  UC1024917  Bromus racemosus Leo Whitney 1935-6-28 3361 a Lassen Bieber Comment
  UC1131324  Bromus suksdorfii A. Simontacchi 1940-6-24 891 Lassen 6.4 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1950 Comment
  CAS-BOT-BC161419  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49199 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  UC1024872  Bromus tectorum Leo Whitney 1935-5-26 3155 Lassen 10 mi e of Adin (Ash Creek); Ash Creek Comment
Read comments
Jun 24 2009
  UC1131326  Bromus tectorum A. Simontacchi 1940-6-8 835 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  UC773967  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S 409 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  HSC95308  Calamagrostis stricta subsp. inexpansa Gordon Leppig, Kai Neander, Juli Neander 1997-7-25 685 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC438314  Calandrinia ciliata T. L. Secrest 1961-6-8 s.n. Lassen Edge of McCoy Flat Reservoir, ca. 14 mi. n. of Westwood Comment
  RSA233787  Callitriche verna R. F. Thorne, C. W. Tilforth 1969-9-5 39133 Lassen Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139. 1433 Comment
  UC1101514  Callitriche verna Verne Grant and Irving Schneider 1947-9-6 8385 Lassen creek midway between Eagle Lake and Susanville Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  CHSC4778  Calochortus leichtlinii R. Carter 1967-6-27 552 Lassen Ca. 10 yds. Off N side of Rd., 1.75 mi W of Eagle Lake Biology Station. 1584 Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  UC119897  Calochortus macrocarpus T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  POM109600  Calochortus macrocarpus Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkins Ranch 1524 Comment
  SD52068  Calochortus nuttallii F. Stephens 1894-7-2 10337 Lassen Robbins Creek. Comment
  CHSC30590  Calyptridium umbellatum Marc Held 1972-6-29 22 Lassen North end of Dean's Meadow. Comment
  CHSC36441  Calyptridium umbellatum Margaret E. Halloran 1982-6-5 8 Lassen Northeast base of Gallatin Peak 1000 ft from the top. Comment
  CHSC67062  Calyptridium umbellatum Willis Ball 1969-6-20 16 Lassen Found beside road on Dean's Ridge. 1950 Comment
  UC1523751  Calyptridium umbellatum G. Schoolcraft 1981-5-5 374 Lassen Ash Valley 1548 Comment
  UC1542941  Calyptridium umbellatum G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley National Recreational Area 1554 Comment
  CAS-BOT-BC497000  Camassia quamash Luella Bass 1980-6-14 EV 2 - 80 Lassen Elysian Valley Comment
  CHSC99737  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2008-6-20 14905 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
  CAS-BOT-BC497551  Camassia quamash subsp. breviflora Elmer I. Applegate 1934-5-4 8936 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC497554  Camassia quamash subsp. breviflora Doris Kildale Gillespie 1930-5-13 9390 Lassen Between Susanville and Janesville Comment
  RSA294815  Camissonia minor Arnold Tiehm 1980-5-29 5752 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 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
  JEPS107981  Camissonia parvula Lowell Ahart, John Dittes 2005-6-2 11938 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  CHSC93694  Camissonia pubens Lowell Ahart; John Dittes 2005-6-2 11993 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  SEINET10903367  Camissonia pusilla David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17799 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentat, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  HSC81475  Camissonia tanacetifolia Thomas W. Nelson, Jane P. Nelson 1980-7-6 6011 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 Comment
  CAS-BOT-BC160863  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-7-8 12505 Lassen Spalding's, Eagle Lake Comment
  JEPS114631  Capsella bursa-pastoris Lowell Ahart, John Dittes 2008-6-22 15033 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  UC10331  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  UC1609211  Cardamine breweri Vernon H. Oswald and Lowell Ahart 1993-8-3 5743 Lassen ca 13 mi (air) n. Lake Almanor (s.w. edge Cooper Swamp located e. of Silver Lake just e. of the Caribou Wilderness); Cooper Swamp 1932 Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  CAS-BOT-BC17908  Carex angustata George Wilson Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. South Shore of Snag Lake. 100 yards from lake. 1850 Comment
  SEINET7549686 Image available Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  CAS-BOT-BC18103  Carex athrostachya John Thomas Howell 1934-7-7 12472 Lassen Pine Creek Flat. Comment
  CHSC60428  Carex athrostachya Mary Ann Showers 1992-6-13 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC89754  Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC1100437  Carex athrostachya Herbert L. Mason 1947-7-9 13300 Lassen 5 mi E of Bieber 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
  UC1748339  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen NW corner of Upper Stephens Meadow (Upper Pine Creek near Stephens Camp); High Cascade Range 1900 Comment
  CHSC68770  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8502 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
  CHSC68771  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8519 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy. 139. 1682 Comment
  JEPS100621  Carex douglasii Dean W. Taylor 1974-6-14 3716 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  JEPS94477  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8502 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling road); Forest Route 38N04 1546 Comment
  UC190403  Carex douglasii M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixey Valley Comment
  SEINET7557452 Image available Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvey Valley. Comment
  CHSC60783  Carex filifolia var. erostrata Vernon H. Oswald; Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  HSC48360  Carex filifolia var. erostrata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19171 Lassen Open pasture in Harvey Valley near Cone Springs Comment
  JEPS87492  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  UC1133496  Carex filifolia var. erostrata A. Simontacchi 1940-5-17 729 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC21304  Carex fracta John Thomas Howell; Gordon H. True 1973-8-1 50176 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  CAS-BOT-BC22236  Carex haydeniana John Thomas Howell 1934-6-14 12164 Lassen Near Lost Lake. Warner Mountains. 2438 Comment
  UCD140369  Carex haydeniana John Thomas Howell 1934-6-14 12163 Lassen near Lost Lake, Warren Mountains. Comment
  SEINET7587564 Image available Carex heteroneura L. P. Janeway 2003-7-24 7915 A Lassen Swain Mountain 7.5' Quad, High Cascade Range, along Forest Service Road 30N14 1.1 km from Road 30N21. Small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  CHSC85976  Carex integra L. P. Janeway 2003-7-24 7916 Lassen High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  UC1594653  Carex lasiocarpa Vernon H. Oswald and Lowell Ahart 1992-7-16 5120 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  JEPS88667  Carex lenticularis var. impressa Dean W. Taylor 1975-8-24 5407 Lassen margin of Everett Lake Thousand Lake Wilderness Area, Magee Peak, Everett Lake 2307 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  CHSC85008  Carex lenticularis var. lipocarpa L. P. Janeway; B. Castro 2003-10-5 8004 Lassen High Cascade Range. Western edge of Triangle Lake; Caribou Wilderness Area. 2153 Comment
  CHSC87113  Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  CAS-BOT-BC32195  Carex multicaulis H. D. Ripley; R. C. Barneby 1943-6-14 5730 Lassen Fredonyer Pass 1676 Comment
  CHSC66411  Carex nebrascensis Vernon H. Oswald; Lowell Ahart 1996-6-17 7813 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the edge of the trail at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  JEPS114767  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-20 14953 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
  SEINET7568737 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7913 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  UC1142949  Carex nebrascensis A. L. Hormay 1941-6-18 7 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  SEINET7484007 Image available Carex pachycarpa W. W. Eggleston 1927-1 21485 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  SEINET7570891 Image available Carex pellita L. P. Janeway 2003-7-24 7919 Lassen Swain Mountain 7.5' quad. High Cascade Range. Below Forest Service Road 30N14 1.1 km from Road 30N21, small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  CHSC89747  Carex petasata L. P. Janeway 2004-6-26 8153 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
  CHSC93433  Carex petasata Martin J. Lenz 2004-6-23 221 Lassen Approx. 0.6 air mi. WSW of Schoonamaker Lake. UTM 10 664213 E 4515435 N. Edge of seasonally wet meadow. 1707 Comment
  CHSC43570  Carex praegracilis Lowell Ahart 1974-7-9 540 Lassen Along the edge of the road, near the south edge of Eagle Lake. 1584 Comment
  JEPS107834  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  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
  CAS-BOT-BC118741  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49469 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS109091  Carex preslii D. W. Taylor 2008-6-19 20226 Lassen Unnamed meadow equidistant between Papoose Meadwo and Mahogany Lake Comment
  HSC48221  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19176 Lassen Harvey Valley near Cone Springs 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
  HSC95305  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 514 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET6171441  Carex simulata CLM Team 2014-7-29 NV 030 -984 Lassen From Reno head north on 395, turn right onto Red Rock Rd. and proceed roughly 0.5-0.75 of a mile and park at dirt pull off on the right side of the road 1381 Comment
  UC1142951  Carex simulata A. L. Hormay 1941-6-23 14 Lassen Burgess Spring Lassen National Forest 1676 Comment
  CAS-BOT-BC115970  Carex subfusca Peter H. Raven; Otto Thomas Solbrig 1958-6-16 13253 Lassen 4.5 mi E of Westwood on St Hwy 36. Comment
  UC1108036  Carex subfusca E. B. Copeland 1952-8-13 Lassen at road crossing King's Creek Meadow; Mount Lassen 2225 Comment
  UC1142963  Carex utriculata A. L. Hormay 1941-6-17 24 Lassen near Westwood (Meadow Lake); Lassen National Forest 1615 Comment
  HSC95287  Carex vesicaria Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 534 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC114881  Carex whitneyi John Thomas Howell 1959-9-23 s.n. Lassen North end of Juniper Lake, Lassen Park. 2057 Comment
  CAS-BOT-BC114884  Carex whitneyi Hans Leschke 1958-8-15 s.n. Lassen Trail Butte-to Snag Lake near Lava beds. 1920 Comment
  JEPS107789  Castilleja angustifolia Lowell Ahart, John Dittes 2005-6-2 11941 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  JEPS62334  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen ca 6 mi n Honey Lake 1280 Comment
  UC1368787  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen about 6 mi n Honey Lake 1280 Comment
  UC585181  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1759 Lassen e of Red Rock (nw side of summit of ridge) 1828 Comment
  HSC20562  Castilleja angustifolia M. L. Stuart 1965-5-2 56 Lassen 2 mi. N of Termo. on Hwy. 395 1829 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
  CHSC30598  Castilleja applegatei subsp. pinetorum Marc Held 1972-6-29 19 Lassen 3 miles from Dean's Meadow, towards 5 points, off road side. Comment
  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
  JEPS128167  Castilleja applegatei subsp. pinetorum M. C. Mahoney, J. A. Nash 2017-9-9 CA 350 -90 Lassen Fredonyer Mountain. Comment
  UC1063044  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1542945  Castilleja applegatei subsp. pinetorum G. Schoolcraft 1987-5-6 1699 Lassen n end Eagle Lake (near Stone Ranch) 1554 Comment
  UCD170229  Castilleja applegatei subsp. pinetorum K. M. Meyer; A. Townesmith 2007-7-23 152 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  JEPS28820  Castilleja arachnoidea Frances Payne 1929-7-12 83 Lassen between Camp 1 and Lost Lake (s end of Warner Range, e slope); Warner Range 2286 Comment
  RSA428370B  Castilleja arachnoidea Christopher Davidson 1974-7-25 2500 Lassen Lassen Volcanic nat. Park, at Juniper Lake. 2134 Comment
  JEPS74939  Castilleja campestris subsp. campestris T. I. and F. M. Chuang 1975-7-23 7552 Lassen 3.2 mi s Madeline (along Hwy 395) Comment
Read comments
Jun 3 2009
  SEINET3159144  Castilleja chromosa J. L. Strother 1970-5-23 954 Lassen about 6 mi N of Honey Lake 1280 Comment
  CHSC117183  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 21021 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  JEPS74943  Castilleja lacera T. I. and F. M. Chuang 1975-7-23 7556 Lassen just w Westwood (area of golf course) Comment
  JEPS86676  Castilleja lemmonii L. R. Heckard with T. I. Chuang 1990-7-14 6756 Lassen just e Westwood (n of Firland Rd (Hwy 36)) Comment
  CHSC6268  Castilleja linariifolia P. Balch 1955-7-21 Lassen Willow Creek, Eagle Lake. 1463 Comment
  JEPS126474  Castilleja linariifolia Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-8-10 CA 350 -067 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  RSA46750  Castilleja miniata J. T. Howell 1934-6-10 11871 Lassen Janesville Comment
  CAS-BOT-BC240998  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen Route 395, 5 miles south of Ravendale 1645 Comment
  CAS-BOT-BC241000  Castilleja pilosa Michael A. Vincent 1999-6-9 8584 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield 1524 Comment
  JEPS17615  Castilleja pilosa Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5410 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadow, s end of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS80677  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5529 Lassen about 0.5 mi e Nubieber 1249 Comment
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 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
  UC1483790  Castilleja pilosa Mary Meyer 1980-7-1 Lassen Champs Flat 1677 Comment
  JEPS114750  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-22 15027 Lassen Along a small natural drainage, about 20 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  RSA0035396  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-20 14944 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
  UC1609289  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1993-6-28 5576 Lassen 0.2 mi n Highway 44 (Harvey Valley Rd. (33N02), e side of Grays Valley, e of Poison Lake); Grays Valley 1749 Comment
  SJSU11528  Castilleja tenuis J. W. Tilden 1960-6-27 1514 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CHSC29953  Caulanthus major Robin L. Ondricek 1978-6-8 46 Lassen Ridge E of Lower Dry Lake. 1767 Comment
  RSA0027351  Caulanthus major John F. Emmel 1994-7-17 1328 Lassen Summit area of Observation Peak. 2378 Comment
  UC1477727  Caulanthus major var. nevadensis Teresa Prendusi 1980-7-21 30 Lassen Fredonyer Peak 2377 Comment
  CAS-BOT-BC48533  Ceanothus cordulatus G. Schoolcraft 1988-7-11 1823 Lassen Along Hwy. 44 ca 5 miles n. of Hwy. 36 intersect. Susanville, California 1676 Comment
  SEINET196483  Ceanothus cordulatus C. B. Heisser 1947-7-13 s.n. Lassen Near Westwood Comment
  CHSC7725  Ceanothus cuneatus Berverly J. Wise 1969-4-21 91 Lassen 2.6 mi. south of Susanville on the Old Dump Rd. 1341 Comment
  CDA5726  Ceanothus prostratus Gary Schoolcraft 2000-4-25 2890 Lassen 3.5 miles north of Susanville along Highway 139. 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
  HSC22955  Ceanothus velutinus John Pratt 1970-6-21 28 Lassen 1738 Comment
  CAS-BOT-BC52438  Ceanothus velutinus var. velutinus John Thomas Howell 1924-8-13 637 Lassen Between Chester and Westwood Comment
  SEINET10690337  Ceanothus velutinus var. velutinus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 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
  OBI4702  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On N side of old rd to Susanville, 1 mi W of Johnstonville Comment
  CDA36156  Centaurea maculosa CDFA Staff Jul 1998 Lassen Susanville. 0 Comment
  UCR67437  Centaurea solstitialis George K. Helmkamp 1990-9-23 D- 4 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CHSC114170  Centaurea solstitialis R. E. Brainerd; N. Otting 2004-8-26 538 Lassen Highway 395 ca 30 miles northeast of Susanville. 1371 Comment
  UC1042560  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 Lassen Cramer Ranch Big Valley Comment
  CAS-BOT-BC106074  Centaurea virgata subsp. squarrosa Barrett Anderson 1986-7-9 3128 Lassen Road to Day, about 2.4 km N of Rte 299. 1065 Comment
  SEINET13331058 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 mi. N. of Bieber, Big Valley Comment
  CAS-BOT-BC388153  Cerastium fontanum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49480 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC400183  Ceratophyllum demersum D. Toren; B. Trowbridge 1975-6-19 5183 Lassen Blue Lake 1828 Comment
  CDA25720  Cercocarpus ledifolius T. C. Fuller 1963-7-15 10899 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CAS-BOT-BC143806  Cercocarpus ledifolius var. ledifolius George W. Gillett 1957-7-26 902 Lassen Butte Lake 1844 Comment
  CAS-BOT-BC143808  Cercocarpus ledifolius var. ledifolius L. B. Barlow 1967-7-15 130 Lassen Eagle Lake Biological Station, east central side of Eagle Lake 1554 Comment
  CHSC12418  Cercocarpus ledifolius var. ledifolius Anne Linda Brisk 1969-6-19 5 Lassen 1/4 mi NE of ELBS. 1554 Comment
  JEPS112814  Chaenactis douglasii Dean W. Taylor 1974-6-14 3723 Lassen Plumas National Forest; Janesville Grade Road, at summit ca. 4 mi SSW of Janesville 1706 Comment
  CHSC5202  Chaenactis douglasii var. douglasii R. Gein 1946-6-24 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  JEPS19806  Chaenactis douglasii var. douglasii Rimo Bacigalupi with S. Galen Smith 1957-6-28 6012 Lassen ne of Karlo (along U.S. Highway 395, near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  UC90118  Chaenactis douglasii var. douglasii unknown 1892-6-22 Lassen Honey Lake Comment
  SEINET11908036  Chamaebatiaria millefolium Unknown 1973-1 11 Lassen approx. 50 m W from entrance to Chico State Biological Field Station on E side of Eagle Lake Comment
  CHSC36489  Chamaesaracha nana Theresa Costa 1982-6-4 38 Lassen Jct of rd e Murrers Upper Meadow and rd to Dry Lakes. Comment
  UC1542162  Chamaesaracha nana Paul Covel 1986-6-6 Lassen e of Chester (Lake Almanor dike); Lake Almanor Comment
  NY1001693  Chamaesyce serpyllifolia G. Schoolcraft 1981-8-11 556 Lassen Near edge of Said Valley Reservoir 1615 Comment
  UC17811  Chamaesyce serpyllifolia M. S. Baker and Frank Nutting 1894-7-24 Lassen Willow Creek Comment
  JEPS39306  Chamerion angustifolium subsp. circumvagum Brown and Wieslander 1922-7-23 37 Lassen Martin Sprs. Eagle Lake Comment
  HSC991  Cheilanthes gracillima H. E. Parks, S. T. Parks Jun 1928 262 Lassen Mt. Lassen National Park, Drakesbad 2134 Comment
  UC62674  Cheilanthes gracillima Baker and Nutting 1894-7-30 Lassen Silver Lake 2286 Comment
  CHSC65306  Chenopodium album Vernon H. Oswald; Lowell Ahart 1995-8-14 7180 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
  CHSC106830  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet. 1524 Comment
  UC1587041  Chenopodium fremontii G. Schoolcraft 1991-7-31 2206 Lassen just s of Shinn Peak 2103 Comment
  CAS-BOT-BC460932  Chenopodium hians John Thomas Howell 1934-7-8 12499 Lassen Spalding's, Eagle Lake Comment
  CHSC60892  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1993-7-8 5659 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
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Nov 1 2014
  CAS-BOT-BC426337  Chenopodium nitens John Thomas Howell 1934-7-10 12543 Lassen Patterson Flats Comment
  CHSC6235  Chimaphila menziesii P. Balch 1955-7-22 Lassen Eagle Lake. Between Eagle Lake and Pittville road. 1676 Comment
  POM105904  Chorizanthe watsonii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  CHSC23506  Chrysolepis sempervirens Wayne O. Baum 1971-7-8 71 -64 Lassen E. slope of Gallatin Peak. 1920 Comment
  CHSC30554  Chrysolepis sempervirens Sori H. Shad 1970-6-26 20 Lassen Found at the edge of Deans Meadow. 1828 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
  POM212177  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles form Bieber on the road to Alturas 1268 Comment
  UC1483877  Chrysothamnus viscidiflorus subsp. lanceolatus G. Schoolcraft 1979-8-23 182 Lassen Painter Flat Comment
  CAS-BOT-BC105902  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1987-9-9 1776 Lassen Ash Valley RNA just S. of T in road 1554 Comment
  CAS-BOT-BC105907  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC162753  Chylismia claviformis subsp. cruciformis G. H. True 1937-7-10 791 Lassen Skeedaddle Comment
  JEPS29747  Chylismia claviformis subsp. cruciformis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8502 Lassen 2 mi e Wendel junction (on road past Flanagan to Pyramid Lake, Nevada, in low areas n of Honey Lake) 1219 Comment
  UC1184293  Chylismia claviformis subsp. cruciformis Peter H. Raven and Otto T. Solbrig 1958-6-17 13269 Lassen along US Hwy 395 19.0 mi s Ravendale Comment
  CHSC5034  Cichorium intybus L. B. Barlow 1967-7-6 108 Lassen 2 mi. west Murrer's Ranch turn off, 14.9 mi. north of Susanville, Calif., Highway 139. 1463 Comment
  CDA38208  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CDA38210  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  UC1035883  Cirsium andersonii Annie M. Alexander and Louise Kellogg 1946-8-13 5156 Lassen w side of Eagle Lake Eagle Lake Comment
  CDA1124  Cirsium canescens T. C. Fuller 1966-7-22 14981 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1168  Cirsium cymosum G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2798 Lassen Secret Creek drainage, W side of Hwy 395 at foot of Saddle Rock. 15 mi. south of Ravendale. 0 Comment
  CDA15026  Cirsium cymosum B. Villegas 1998-8-18 s.n. Lassen Cascade Range; Hwy 299, 1 mi. W of Big Valley Summit (0.3 mi. W of milepost 7.5). Comment
  CHSC75452  Cirsium cymosum Vernon H. Oswald 1999-6-9 9740 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. Along the road. 1356 Comment
  CAS-BOT-BC278002  Cirsium cymosum Peter H. Raven; Otto T. Solbrig 1958-6-17 13279 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  CAS-BOT-BC278007  Cirsium cymosum John Thomas Howell 1934-6-10 11908 Lassen Madeline Plains near Termo 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
  CAS-BOT-BC278091  Cirsium douglasii var. breweri Peter H. Raven; Otto T. Solbrig 1958-6-17 13280 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  CDA1492  Cirsium ochrocentrum G. D. Barbe 1982-7-13 3880 Lassen Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd. 0 Comment
  CDA1526  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC280422  Cirsium ochrocentrum Lee Wheeler 1950-10-1 s.n. Lassen Clarence Hoffman Ranch Comment
  CAS-BOT-BC280439  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 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
  CDA1524  Cirsium ochrocentrum var. ochrocentrum D. Chambers, M. Carstens 1979-8-14 s.n. Lassen Modoc National Forest Upper Windmill Flat and Packwood Reservoir; 12 mi. S of Adin. 0 Comment
  CDA36753  Cirsium scariosum D. B. Joley 1976-6-16 10 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  CDA1560  Cirsium scariosum var. americanum T. C. Fuller 1959-7-6 2979 -A Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  CHSC7631  Cirsium vulgare Beverley J. Wise 1968-8-23 16 Lassen 10 mi. N.W. of Susanville on the Las. Co. Rd. 201. 1798 Comment
  CAS-BOT-BC439005  Cistanthe monosperma Jeanne Janish; Carl Janish 1938-9-6 s.n. Lassen Near Summit Lake, Lassen National Park. 2042 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
  CAS-BOT-BC123818  Clarkia lassenensis Alice Eastwood; John Thomas Howell 1940-6-11 7983 Lassen Big Valley Mts. Comment
  CHSC4876  Clarkia lassenensis R. Carter 1967-6-23 546 Lassen Growing 10 yds. off S side of road. Comment
  HSC81478  Clarkia lassenensis Thomas W. Nelson, Jane P. Nelson 1980-7-6 6020 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  UCD55291  Clarkia lassenensis Ellen Dean; Gary Schoolcraft 2006-5-16 3112 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  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
  CHSC4775  Clarkia rhomboidea R. Carter 1967-6-27 564 Lassen Ca. 10 yds off S side of Rd. Comment
  UC1587045  Clarkia rhomboidea G. Schoolcraft 1991-7-30 2194 Lassen e side Widow Mountain 1889 Comment
  RSA46419  Clarkia stellata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin s Ranch. 1829 Comment
  CHSC91185  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2005-6-1 11882 Lassen Near springs on a small hill, 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
  JEPS114657  Claytonia rubra subsp. depressa Lowell Ahart, John Dittes 2008-6-20 14910 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC117188  Claytonia rubra subsp. rubra Lowell Ahart; John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC1136745  Claytonia rubra subsp. rubra A. Simontacchi 1940-5-13 700 Lassen 7.8 mi wsw Cone Ranch Heights; Lassen National Forest, Halls Flat Quad. 1920 Comment
  JEPS25528  Cleome platycarpa Rimo Bacigalupi with Lincoln Constance 1959-6-16 7142 Lassen 0.25 mi s U.S. Highway 395 junction with road to Smoke Creek (beside U.S. Hwy 395) 1341 Comment
  JEPS79144  Cleome platycarpa L. R. Heckard with R. Bacigalupi 1980-6-11 5248 Lassen 11.3 mi. n. Litchfield (along U.S. 395, s. of Deep Creek crossing) 1463 Comment
  SEINET3153948  Cleome platycarpa J. L. Strother 1970-5-23 951 Lassen About 6 miles N of Honey Lake, at ca. 4200 feet elevation. 1280 Comment
  UC1567444  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi n Wendel Rd. (along Skedaddle Ranch Rd) 1463 Comment
  UC1587089  Cleomella parviflora G. Schoolcraft 1991-7-22 2178 Lassen s of Smoke Creek Road (just w of CA/NV line) 1341 Comment
  CAS-BOT-BC423223  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  CHSC100886  Cleomella plocasperma L. P. Janeway 2008-8-2 9530 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  CHSC77207  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 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
  NY242361  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  POM93728  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC36452  Collinsia greenei Susan H. Euing 1982-6-6 6 Lassen Pine Creek below fish trap. Flood plain-dry lake bed area. Comment
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Jun 18 2018
  CHSC91181  Collinsia parviflora Lowell Ahart; John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  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
  JEPS107462  Collinsia parviflora Lowell Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS120877  Collinsia parviflora Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18737 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  JEPS95129  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1997-5-27 8500 Lassen North of Susanville (on Forest Rte. 38N04 (between Hwy. 139 near Willow Creek Guard Station & Coyote Flat), 0.1 mi. e. of Hwy. 139, on flood plain of small creek paralleling rd.) 1546 Comment
  UC1032574  Collinsia parviflora K. Bradshaw 1939-5-27 229 Lassen Lassen National Forest, s end of Black Mountain Experimental Forest Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1752 Comment
  UC1137686  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1737 Comment
  UC1143004  Collinsia parviflora August L. Hormay 1934-5-9 Lassen Lassen Nation Forest, Black Mountain Headquarters Black Mountain Headquarters; Lassen Nation Forest, Black Mountain Headquarters 1706 Comment
  UC1924582  Collinsia parviflora Debra Valov 2006-5-28 2006011 Lassen Bieber off County Rd. A2 c. 12 km east of Hwy 299 1279 Comment
  HSC75889  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19259 Lassen Harvey Valley near Cone Springs Comment
  UC773850  Collinsia torreyi var. latifolia L. R. Short 1936-6-25 S 455 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1752 Comment
  CHSC7767  Collomia grandiflora Beverley J. Wise 1969-6-1 75 Lassen N.E. city limits of Susanville, on Chestnut, at intersection with Hwy 139. 1310 Comment
  JEPS117587  Collomia grandiflora Lowell Ahart, John Dittes 2010-7-31 17002 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  OBI77560  Collomia grandiflora Anthony Baniaga 2011-7-5 419 Lassen Lassen Natl Forest. E of Willard Ck. Fredonyer Pass quad T29N R10e sec 25 NE of NW Comment
  SEINET12318331  Collomia grandiflora Unknown 1978-1 22 Lassen Lower Dry Lakes,SE of Eagle L 1646 Comment
  SJSU11426  Collomia grandiflora V. Hardham 1965-7-12 130 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139 1524 Comment
  CHSC6199  Collomia tinctoria J. B. Kimsey 1946-6-13 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  UC1609177  Collomia tinctoria Vernon H. Oswald and Lowell Ahart 1993-6-28 5597 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  SEINET11242313  Conringia orientalis N. H. Holmgren, P. K. Holmgren 1980-1 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 miles) W of Hwy 395, from a turnoff 10.3 km (6.4 miles) S of Madeline. 1620 Comment
  CHSC7713  Convolvulus arvensis Beverley J. Wise 1969-6-4 33 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  JEPS124900 Image available Convolvulus occidentalis subsp. occidentalis Ellen Locke 1967-7-12 101 Lassen Collected at overlook for Fall River Valley, Highway 299, about 6 miles east of Shasta-Lassen county line. Comment
  CAS-BOT-BC286114  Conyza canadensis Louella Bass 1983-9-1 s.n. Lassen At Edward Bass residence, Standish Comment
  JEPS17408  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 mi w of Nevada Line, 17.5 mi e of US Hwy 395); draingage of Rush Creek 1341 Comment
  JEPS95913  Cordylanthus maritimus subsp. canescens Lowell Ahart 1999-9-13 8218 Lassen about 150 yards southwest of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  JEPS11645  Cordylanthus ramosus R. F. Hoover 1940-10-1 4655 Lassen Jonesville Comment
  UC761797  Cordylanthus ramosus R. F. Hoover 1940-9-28 4640 Lassen Leavitt Comment
  CHSC117526  Crassula aquatica Lowell Ahart; John Dittes 2016-7-13 21117 Lassen Strand of the pond, near where drainage enters 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
  CHSC5205  Crepis acuminata A. Santos 1946-6-10 Lassen Eagle Lake. Near Pelican Island. 1554 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
  RSA716340  Crepis acuminata L. Ahart, John Dittes 2005-6-2 11933 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
  UC581256  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2294 Lassen s Janesville; Thompson Peak 2133 Comment
  CAS-BOT-BC290391  Crepis acuminata G. L. Stebbins, Jr.; E. B. Babcock 1936-6-7 1763 Lassen Near summit east of Red Rock 1818 Comment
  CAS-BOT-BC290394  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2314 Lassen Black Mountain about a mile below the summit 1940 Comment
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  CHSC64752  Crepis bakeri Vernon H. Oswald 1995-5-31 6796 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  UC1143044  Crepis monticola L. R. Short and J. Warren 1936-6-23 S- 444 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1839 Comment
  JEPS87522  Crepis occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5606 Lassen Rd 35N04 n Hwy 44 (nw edge of valley, ne of Poison Lake); Harvey Valley, Aspen Well 1725 Comment
  UC581267  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2304 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  SEINET7838805 Image available Crepis occidentalis J. A. Young 1982-6-9 s.n. Lassen Meyer's Ranch, Adin 1372 Comment
  CAS-BOT-BC290750  Crepis occidentalis subsp. occidentalis Doris Kildale Gillespie 1930-5-12 9337 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC376565  Crepis occidentalis subsp. occidentalis B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6566 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield 1330 Comment
  CAS-BOT-BC290822  Crepis occidentalis subsp. pumila Doris Kildale Gillespie 1930-5-13 9366 Lassen Between Susanville and Janesville Comment
  CHSC105239  Crepis occidentalis subsp. pumila Lowell Ahart; John Dittes 2010-7-31 16982 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC60650  Crocidium multicaule Vernon H. Oswald; Lowell Ahart 1993-4-17 5275 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  UC1483839  Crocidium multicaule G. Schoolcraft 1980-4-6 199 Lassen near base of Bass Hill (along Hwy 395, near city dump) 1280 Comment
  SJSU10956  Croton setiger V. Hardham 1965-7-12 122 Lassen 12.4 mi NE of Susanville on Hwy 139 1493 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
  SBBG19764  Cryptantha affinis C. B. Hardham 1961-6-17 7505 Lassen Baxter Crk, S of Susanville Comment
  UCD119054  Cryptantha ambigua Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  CHSC60275  Cryptantha circumscissa P. V. Caldwell 1972-6-16 226 Lassen Eagle Lake. Base of w slope of Blk. Mtn. 1554 Comment
  CHSC93236  Cryptantha circumscissa John Dittes; Scott Chamberlain 2004-6-28 1010 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  JEPS107310  Cryptantha circumscissa Lowell Ahart, John Dittes 2005-6-1 11890 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  JEPS94705  Cryptantha circumscissa Vernon H. Oswald and Lowell Ahart 1998-5-22 9135 Lassen 3.5 mi n of Doyle (Fort Sage Road 2.3 mi n of Hackstaff Road); Fort Sage Road 1341 Comment
  SEINET10455878  Cryptantha circumscissa Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 879 Lassen Collected 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  POM252792  Cryptantha hendersonii A. A. Heller 1938-6-23 15206 Lassen Lassen County the ridge E of Mapes on Hwy 395. 1372 Comment
  UC1562830  Cryptantha humilis Barbara Ertter with Gary Schoolcraft 1987-6-16 7182 Lassen w of Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2133 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
  CHSC64870  Cryptantha intermedia Vernon H. Oswald; Lowell Ahart 1995-6-19 6878 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  JEPS109640  Cryptantha intermedia Dean W. Taylor 2002-6-21 18172 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  JEPS103177  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley 1706 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
  RSA123891  Cryptantha simulans G. A. Fischer, I. Johnson 1933-7-14 F- 260 Lassen Lassen Forest. 1784 Comment
  CHSC27582  Cryptantha watsonii N. E. Heiken 1978-6-27 54 Lassen SE end of Eagle Lake, near Eagle Lake Field Station. 1554 Comment
  CHSC93685  Cryptantha watsonii Lowell Ahart; John Dittes 2005-6-1 11892 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  CHSC23497  Cuscuta Wayne O. Baum 1971-7-14 71 -63 Lassen Gallatin Peak. 2011 Comment
  RSA262506  Cuscuta approximata Lee Smith 1975-9-4 s.n. Lassen A1 Blickenstaff Farm, near Honey Lake, 3 miles south of Janesville. Comment
  UCD126237  Cuscuta approximata Lee Smith 1975-9-4 s.n. Lassen Al Blickenstaff Farm, near Honey Lake, 3 miles south of Janesville. Comment
  POM180742  Cycladenia humilis A. W. Kramer s.n. Lassen Prospect Peak, Lassen National Park Comment
  UC473500  Cycladenia humilis var. humilis A. N. Kramer 1930-1 15 Lassen Prospect Peak Lassen National Park Comment
  CAS-BOT-BC114052  Cyperus squarrosus John Thomas Howell 1974-7-10 50523 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC114167  Cyperus squarrosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49512 Lassen Elysian Valley, W of Janesville. 1325 Comment
  UC569547  Cyperus squarrosus H. S. Yates 1936-8-11 6065 Lassen Baxter Creek Susanville Quad., Baxter Creek 1280 Comment
  UC1063768  Cystopteris fragilis A. Simontacchi 1940-6-5 814 Lassen 3.9 miles nw Cone Mt.; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC208394  Dalea ornata Arnold Tiehm; Raymond Evans; James Young 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest if Litchfield 1371 Comment
  NY703182  Dalea ornata A. Tiehm 1984-6-7 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest of Litchfield 1372 Comment
  UC1483795  Damasonium californicum G. Schoolcraft 1979-6-26 98 Lassen Buckthorn Lake n.w. of Pyramid Lake 1889 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-BC445520  Damasonium californicum Clarence R. Quick 1962-6-17 62 23 A Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  UC1024653  Danthonia californica Leo Whitney 1933-8-3 2201 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1609259  Danthonia californica Vernon H. Oswald and Lowell Ahart 1993-8-3 5755 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  UC53341  Danthonia californica M. S. Baker and Frank Nutting 1894-7-2 Lassen Pine Creek Comment
  JEPS88200  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1996-6-17 7803 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  CAS-BOT-BC141772  Dasiphora fruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50669 Lassen Cirque-like hollow ne. of Diamond Mt. - Sierra Nevada 2255 Comment
  CHSC48859  Dasiphora fruticosa Vernon Oswald 1986-8-7 2270 Lassen Hwy 36, 12.6 mi e of the Lassen-Plumas County line, 0.8 mi e of Fredonyer Pass. Roadcut. 1706 Comment
  JEPS18992  Deinandra lobbii Rimo Bacigalupi with L. R. Heckard 1957-8-18 6060 Lassen 3.1 mi ne Bieber (along U.S. Highway No. 299, nw Lassen County); Big Valley 1249 Comment
  HSC41628  Deinandra lobbii Barbara Kelly 1977-8-10 581 Lassen Along Adin Susanville Road, mileage marker 23.0, S of Adin Comment
  CHSC93658  Delphinium andersonii Lowell Ahart; John Dittes 2005-6-2 11995 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  UC1136878  Delphinium andersonii L. R. Short 1936-5-12 S- 347 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1834 Comment
  UC854041  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  UCD39136  Delphinium andersonii Beecher Crampton 1964-6-27 7093 Lassen West of Termo. Madeline Plains. Comment
  CHSC60846  Delphinium depauperatum Vernon H. Oswald; Lowell Ahart 1993-6-28 5601 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. In a meadow. 1725 Comment
  CHSC6242  Delphinium glaucum A. Santos 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CAS-BOT-BC9946  Delphinium nudicaule Mrs. Baldwin 1928-5-10 N. S. Lassen Coyote Flat. Comment
  CHSC36497  Delphinium nudicaule Theresa Costa 1982-6-3 29 Lassen Ca. .3 mi s jct forest service rds 5.16 and 5.17, ca. 5 yd w 5.16, heading toward 5-corners. Comment
  CAS-BOT-BC116468  Delphinium nuttallianum A. A. Heller 1938-6-4 s.n. Lassen ...about 2 miles south of Westwood 1463 Comment
  CHSC36459  Delphinium nuttallianum Susan H. Euing 1982-6-4 13 Lassen Ca. 1/2 mi e of forest station rd 5.16 heading toward Murrers Upper Meadow. Comment
  CHSC65115  Delphinium nuttallianum Vernon H. Oswald; Lowell Ahart 1995-7-24 7128 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. 1920 Comment
  CHSC67294  Delphinium nuttallianum James D. Jokerst 1991-5-29 3306 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CHSC8562  Delphinium nuttallianum K. Stern 1967-7-1 Lassen Vic. Silver Lake. Comment
  HSC27049  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19195 Lassen Harvey Valley near Cone Springs Comment
  HSC27052  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19165 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC116046  Delphinium nuttallianum F. W. Pierson 1926-6-22 6820 Lassen Trail to Devil's Kitchen, Drakesbad, Lassen National Park. Comment
  HSC27055  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  POM114825  Deschampsia cespitosa subsp. cespitosa Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1142950  Deschampsia cespitosa subsp. cespitosa A. L. Hormay 1941-6-23 13 Lassen Burgess Spring Lassen Nt'l Forest, Burgess Spring 1676 Comment
  UC188776  Deschampsia cespitosa subsp. cespitosa Milo S. Baker July 1894 Lassen Eagle Lake Comment
  CAS-BOT-BC192739  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50650 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC192743  Deschampsia danthonioides Lassen 1927 G. S. Crew 1927-7-15 52 Lassen Lassen National Forest 1737 Comment
  HSC69076  Deschampsia danthonioides Gary Schoolcraft 1980-7-16 313 Lassen Near Nelson Corral Reservoir. 1805 Comment
  RSA185317  Deschampsia danthonioides Clare B. Hardham 1961-6-17 s.n. Lassen Baxter Creek, south of Susanville 1677 Comment
  UC1131558  Deschampsia danthonioides Robert W. Gardner 1937-6-20 G- 21 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UCD62516  Deschampsia danthonioides L. Whitney 1935-5-27 3124 Lassen Bieber. Comment
  CAS-BOT-BC201807  Deschampsia elongata George W. Gillett 1957-7-28 925 Lassen Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake 1859 Comment
  UC38006  Deschampsia elongata J. Burtt Davy Jun 17 1897-Jun 24 1897 3317 Lassen Honey Lake Valley Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  JEPS114360  Descurainia nelsonii Lowell Ahart, John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CHSC25138  Descurainia pinnata B. Anthony 1967-6-23 154 Lassen Eagle Lake Biological Station. 1554 Comment
  CAS-BOT-BC43165  Descurainia pinnata subsp. brachycarpa A. Simontacchi 1940-6-4 808 Lassen 14.8 miles west of Harvey Mountain Lookout. 1813 Comment
  NY694154  Descurainia sophia G. Schoolcraft 1993-5-25 2268 Lassen North and South of Smoke Creek Road 1463 Comment
  CAS-BOT-BC402570  Dicentra uniflora Duncan Dunning 1922-5-15 s.n. Lassen Lassen National Forest. Facht - Robber Creek 1524 Comment
  CHSC7664  Dichelostemma multiflorum Beverley J. Wise 1969-6-1 141 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  UC1037283  Dieteria canescens var. shastensis Leo Whitney 1933-8-21 1716 Lassen ca 14 mi w Eagle Lake (Harvey Mountain near Harvey Valley); Lassen National Forest, Harvey Mountain 1737 Comment
  CHSC4832  Diplacus jepsonii R. Carter 1967-7-14 602 Lassen Growing on n side of rd. ca. 3.5 mi e of Silver Lake between rd (31N07) and Susan River. 1828 Comment
  CAS-BOT-BC153671  Diplacus mephiticus G. Schoolcraft 1989-6-17 1909 Lassen Northwest slope of Shaffer Mtn. Comment
  CAS-BOT-BC153679  Diplacus mephiticus H. D. Ripley; R. C. Barneby 1943-6-13 5698 Lassen South of Milford 1569 Comment
  CHSC13945  Diplacus mephiticus M. S. Taylor 1974-7-6 311 Lassen On Gallatin Peak overlooking Gallatin Beach, ca. 13 mi nw of Susanville. Comment
  OBI76990  Diplacus mephiticus Anthony Baniaga 2011-7-5 418 Lassen Lassen Natl Forest. E of Willard Crk. Fredonyer Pass quad. T29N R10E sec 25 NE of NW 1503 Comment
  CHSC60776  Diplacus nanus Vernon H. Oswald; Lowell Ahart 1993-6-3 5482 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 1.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the NW edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  CDA31696  Distichlis spicata E. E. Fix, Agric. Comm. Sep 1951 Lassen 0 Comment
  SD7836  Dodecatheon Mrs. R. M. Austin August 1882 Lassen Kings Valley Comment
  CAS-BOT-BC136181  Dodecatheon alpinum John Thomas Howell 1934-6-14 12114 Lassen Near Lost Lake - Warner Mountains 2438 Comment
  HSC17851  Dodecatheon alpinum Jim Vaughn 1956-8-11 Lassen Horseshoe Lake, Mt. Lassen National Park 1982 Comment
Read comments
Apr 28 2013
  UC1776683  Dodecatheon conjugens G. Schoolcraft 1999-5-5 2814 Lassen Along Tuledad Road about 2 mile NE of Dodge Reservoir 1859 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
  CHSC23459  Downingia K. R. Stern 1973-4-18 5853 Lassen Drying vernal pool area, ca. 0.2 mi n of Hwy 44 on Pittsville Rd. Comment
  CHSC12415  Downingia bacigalupii Anne Linda Brisk 1969-6-26 30 Lassen Growing in Papoose Meadow, 13.5 mi SW of ELBS. 1658 Comment
  CHSC4763  Downingia bacigalupii R. Carter 1967-7-16 622 Lassen Growing in drying vernal pool along side rd. Comment
  JEPS96026  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1996-6-24 7845 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1024290  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (adjacent to State Highway 299); Lassen National Forest Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  RSA28137  Downingia bicornuta Elmer I. Applegate 1929-6-24 5883 Lassen Pond just north of Beiber, NW corner of county. 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
  SFV3644  Downingia elegans I. L. Wiggins, D. B. Wiggins 1961-6-16 16532 Lassen Dry, roadside swale in Big Valley, 2.5 miles east of Modoc-Lassen County liine. 1280 Comment
  UC1520663  Downingia insignis Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9482 Lassen 4.6 mi s Ravendale (U.S. Highway 395) 1615 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
  CHSC65304  Downingia laeta Vernon H. Oswald; Lowell Ahart 1995-8-14 7199 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  JEPS114644  Downingia laeta Lowell Ahart, John Dittes 2008-6-20 14928 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS24763  Downingia laeta John H. Weiler, L. Constance, E. Molseed 1960-6-13 60164 Lassen 1.7 mi. s. Ravendale (w. side of U.S. 395) 1615 Comment
  CHSC58489  Draba albertina Vernon H. Oswald 1992-7-3 5058 Lassen Lassen Volcanic National Park. Grassy Creek between Horseshoe and Snag lakes, ca. 0.3 mi NE of the trail to Cameron Meadow. On slope bordering the creek. 1950 Comment
  JEPS94137  Draba verna Vernon H. Oswald and Lowell Ahart 1998-5-22 9128 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts., 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  CHSC91326  Draba verna var. aestivalis Lowell Ahart; John Dittes 2005-6-1 11901 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CHSC96701  Drosera anglica Gordon Leppig; J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. Peatland i ... Field redacted by CHSC, contact the data manager for more information 1970 Comment
  CAS-BOT-BC401538  Drosera rotundifolia G. Schoolcraft 1997-8-5 2648 Lassen Along Robbers Creek near Robbers Spring 1798 Comment
  JEPS128410  Drymocallis glandulosa Catherine Bauer with Ellen Bauer Benson 2017-8-16 18 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  SEINET11910532  Drymocallis glandulosa Unknown 1978-1 11 Lassen E side of Mahogany L., S of Eagle L. 2060 Comment
  CAS-BOT-BC159343  Drymocallis lactea var. lactea John Thomas Howell; Gordon H. True 1973-8-1 50224 Lassen East slope of Diamond Range south of Susanville - Sierra Nevada 2133 Comment
  HSC31371  Dysphania pumilio D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19292 Lassen Along Hwy. 395 about 4 mi. E of Standish 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
  UCR227660  Elatine R. F. Thorne, Larry E. DeBuhr 1975-8-22 47213 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  CHSC107341  Elatine californica Lowell Ahart; John Dittes 2011-6-21 17527 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC116197  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20302 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
  CHSC116199  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20301 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
  UCR227661  Elatine californica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47212 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  CHSC60975  Elatine chilensis Lowell Ahart 1993-5-17 6954 Lassen On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. Comment
  RSA252456  Elatine gracilis R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39135 Lassen Said Valley Reservoir. Comment
  UC1836  Eleocharis acicularis J. Burtt Davy Jun 17-24 1897 3290 Lassen Honey Lake Valley Comment
  CAS-BOT-BC113591  Eleocharis acicularis John Thomas Howell 1959-9-23 34892 Lassen Juniper Lake camp grounds, Lassen Park 2057 Comment
  HSC7304  Eleocharis acicularis Fred J. Kindel 1955-6-15 Lassen Mt. Meadows Reservoir, Westwood Comment
  CHSC60449  Eleocharis acicularis var. acicularis Mary Ann Showers 1992-6-13 2548 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC66272  Eleocharis bella Vernon H. Oswald 1996-6-24 7851 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow just S of the cabins. 1633 Comment
  JEPS88513  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1996-6-24 7851 Lassen Papoose Meadows Modoc Plateau (ca 0.5 mi e of Eagle Lake Rd (A1) and 2.5 mi s of Eagle Lake, at pile of fenceposts on w side of meadow just s of cabins) 1633 Comment
  CHSC60450  Eleocharis macrostachya Mary Ann Showers 1992-6-13 2555 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC77256  Eleocharis macrostachya G. Schoolcraft 1995-6-27 2499 Lassen Cherry Creek. 1524 Comment
  UC1818  Eleocharis macrostachya J. Burtt Davy Jun 17-24 1897 3287 Lassen Honey Lake Valley, W end of lake Comment
  RSA127028  Eleocharis palustris Robert W. Gardner 1937-6-26 G- 26 Lassen Poison Lake 1707 Comment
  UCD54570  Eleocharis parvula Ellen Dean; Dawn Cunningham 2005-10-25 2753 Lassen East of the town of Susanville. Property N of California Correctional Facility. Western side of property. Extensive seasonal wetland system that was used until June 2005 as receiving area for geothermal heating system used by Correctional Facility and prison. 1248 Comment
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Oct 5 2010
  UC1776676  Eleocharis quinqueflora G. Schoolcraft 1995-5-23 2488 Lassen Three Springs 1554 Comment
  UC1100132  Elodea nuttallii Herbert L. Mason and Verne Grant 1947-7-9 13292 Lassen 5 miles east of Bieber Comment
  UC1031373  Elymus X saundersii Leo Whitney 1935-7-31 3588 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC506940  Elymus X saundersii George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassn <National> Forest 1737 Comment
  CHSC117535  Elymus caput-medusae Lowell Ahart; John Dittes 2016-7-13 21145 Lassen Scattered along the west edge of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC111247  Elymus cinereus B. Castro; L. P. Janeway 2012-7-2 1937 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at 'Skedaddle Ranch. 1577 Comment
  SEINET10521751  Elymus cinereus var. pubens Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 888 Lassen 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  CAS-BOT-BC227485  Elymus elymoides Brighton C. Cain 1925-8-25 125 Lassen Horse trail from Drakesbad to summit of Mt. Lassen 2438 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  CAS-BOT-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  JEPS128414  Elymus elymoides Catherine Bauer with Ellen Bauer Benson 2017-8-16 20 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UCD61568  Elymus elymoides L. Whitney 1933-8-15 Lassen Halls Flat. Lassen Forest. 1737 Comment
  UC1024794  Elymus elymoides subsp. elymoides Leo Whitney 1933-7-15 2229 Lassen ca 25 mi w upper end of Eagle Lake; Lassen National Forest, Hall's Flat 1737 Comment
  UC1024956  Elymus elymoides subsp. elymoides Leo Whitney 1935-6-24 3305 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  JEPS126495  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-6-28 CA 350 -72 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  CHSC111249  Elymus elymoides var. elymoides L. P. Janeway; B. Castro 2012-7-3 10943 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  UCD61834  Elymus glaucus A. A. Beetle 1941-6-28 2803 Lassen 10 miles W of Chester, rte 36. Comment
  CAS-BOT-BC234092  Elymus multisetus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16343 Lassen Hillside 13.5 mi. E of Susanville Comment
  CAS-BOT-BC213802  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Ruderal in city park, Susanville - Sierra Nevada 1295 Comment
  CHSC117482  Elymus spicatus L. P. Janeway; B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  JEPS119960  Elymus trachycaulus Lowell Ahart, John Dittes 2012-7-9 18297 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS68378  Elymus trachycaulus Brown and Wieslander 1922-7-23 74 Lassen Martin Springs Comment
  JEPS114765  Elymus trachycaulus subsp. subsecundus Lowell Ahart, John Dittes 2008-6-20 14908 Lassen about 100 yds W of where the levee road crosses Bog Valley Canal, in Big Valley, about 4 mi (air) NE of the Headquarters at Ash Creek State Wildlife Area, about 7 mi (air) NE of Bieber 1263 Comment
  CHSC105211  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2010-7-19 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
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Oct 5 2019
  CHSC112048  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2012-7-9 18297 Lassen On dry soil, on the south side of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS117564  Elymus trachycaulus subsp. trachycaulus Lowell Ahart, John Dittes 2010-7-19 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
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Oct 5 2019
  CAS-BOT-BC81880  Ephedra viridis P. Monnet 1913-7-1 839 Lassen Hot Springs Peak 2133 Comment
  CHSC30602  Ephedra viridis L. J. Dawson 1975-7-7 43 Lassen 6 mi from Hwy. 395 on Ravensdale Road. 1584 Comment
  HSC1308  Ephedra viridis K. P. St. John 1965-5-6 17 Lassen 13 mi. N of Litchfield on Hwy. 395 Comment
  RSA245293  Ephedra viridis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19306 Lassen Along Hwy 395 about 4 miles E of Standish Comment
  RSA123007  Epilobium brachycarpum L. R. Short, J. Warren 1936-6-23 S- 454 Lassen Burgess Spring Exp. Range, Lassen forest 1744 Comment
  SEINET12539614  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  SEINET12539651  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  SEINET12539665  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CHSC106066  Epilobium campestre Lowell Ahart; John Dittes 2010-7-31 16996 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  POM46399  Epilobium ciliatum subsp. ciliatum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1583966  Epilobium ciliatum subsp. ciliatum G. Schoolcraft 1990-8-14 2123 Lassen on Hwy 139 between M.P. 56 and M.P. 57 (s of Adin) 1432 Comment
  CHSC106068  Epilobium densiflorum Lowell Ahart; John Dittes 2010-7-31 16994 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  JEPS121249  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 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
  NY1000270  Epilobium densiflorum G. Schoolcraft 1982-8-18 893 Lassen West of Doyle 1585 Comment
  HSC95302  Epilobium oregonense Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 527 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC99141  Epilobium torreyi Lowell Ahart; John Dittes 2008-6-19 14878 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
  JEPS77524  Equisetum hyemale subsp. affine L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-7-20 4894 Lassen junction of Blue Lake turn-off with Likely-Patterson Guard Station rd.; Warner Mts. 1889 Comment
  CAS-BOT-BC57302  Equisetum laevigatum John Thomas Howell 1975-7-23 51386 Lassen Susanville 1295 Comment
  CHSC99499  Equisetum laevigatum Lowell Ahart; John Dittes 2008-6-20 14933 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC57301  Equisetum laevigatum Barbara Shervanick 1974-5-7 1262 Lassen Highway 395, just south of Milford, Cascade Range 1371 Comment
  SEINET10530241  Equisetum laevigatum Mary Susan Taylor 1982-5-29 Taylor 4566 Lassen 4900 ft. T22N R17E sw/sw sec 23. Loyalton quad. In sandy rd embankment at jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno. 1493 Comment
  CHSC76105  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8229 Lassen Along the north side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CAS-BOT-BC213625  Eragrostis mexicana subsp. virescens John Thomas Howell; G. H. True 1973-7-31 50145 Lassen Susanville 1295 Comment
  CAS-BOT-BC284042  Eragrostis minor John Thomas Howell 1976-7-19 51942 Lassen Susanville, Sierra Nevada 1287 Comment
  JEPS124509 Image available Eremogone congesta L. Fleckenstein 1967-7-12 70 Lassen Collected 300 yds east of Hwy. 139, 15.2 Mi. S. E. of Adin, near Willow Creek Campground. Comment
  RSA0045087  Eremogone congesta Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC174189  Eremogone congesta var. congesta Mrs. R. M. Austin; Mrs. Bruce 1898-6-1 2156 Lassen [Madaline] Madeline Plains Comment
  CHSC91525  Eremogone congesta var. congesta L. P. Janeway 2005-7-3 8457 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
  CHSC111269  Eremogone congesta var. subcongesta L. P. Janeway 2012-7-3 10941 Lassen Modoc Plateau. Near top of Shaffer Mountain, rocky outcrops, west-northwest facing and very rocky with lots of outcrops of hard dark volcanic rock. 2032 Comment
  CHSC66382  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1996-6-17 7798 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  CHSC4897  Eriastrum signatum Bill Wilson 1967-7-4 51 Lassen Collected at Dean's Meadow, 6 mi S of Eagle Lake Biological Station. 4 mi. N of Susanville. 1950 Comment
  CHSC5009  Eriastrum signatum L. G. Bennett 1967-7-4 110 Lassen Deans Meadow, near Eagle Lake. 1706 Comment
  JEPS19760  Eriastrum signatum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6008 Lassen along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  JEPS116749  Eriastrum sparsiflorum David Gowen 2006-8-2 657 Lassen South of Constantia on Red Rock Rd. just east of Hwy 395. Comment
  JEPS124585 Image available Eriastrum sparsiflorum Dixie Funnell 1965-7-12 127 Lassen 2.6 miles north of MIlford. Comment
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  CAS-BOT-BC515234  Eriastrum wilcoxii Rimo Bacigalupi; G. T. Robbins 1955-7-21 5418 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  UC76031  Ericameria bloomeri Milo S. Baker Lassen Big Valley, Lassen and Modoc Co. Big Valley Comment
  SEINET7950731 Image available Ericameria nauseosa var. hololeuca Unknown 1921-9-11 s.n. Lassen South side of Honey Valley Comment
  CAS-BOT-BC298183  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-4 2397 Lassen Big Valley, 3.6 miles from Bieber on road to Alturas 1267 Comment
  CHSC76085  Ericameria nauseosa var. oreophila Lowell Ahart; Vernon H. Oswald 1999-9-13 8220 Lassen Along road, about 100 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
  UC761846  Ericameria nauseosa var. oreophila R. F. Hoover 1940-9-28 4638 Lassen Leavitt Comment
  CAS-BOT-BC294181  Ericameria nauseosa var. speciosa R. E. Frenkel 1964-10-1 915 Lassen On California Hwy. 36, 1.0 mile east of California Hwy. 44, west of Susanville 1493 Comment
  CAS-BOT-BC294184  Ericameria nauseosa var. speciosa Louella Bass 1973-9-4 EV 133 Lassen Elysian Valley 1325 Comment
  HSC68556  Ericameria nauseosa var. speciosa Gary Schoolcraft 1980-8-10 359 Lassen Along Post Camp Rd. N of Shinn Peaks 1890 Comment
  UC761817  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC299483  Ericameria nauseosa var. washoensis Gary Schoolcraft 1984-8-27 1369 Lassen Upper Tuledad Canyon 1676 Comment
  UC527350  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 Lassen 0.5 mi from Janesville (on the road to Wendel, w edge of Honey Lake Valley); Honey Lake Valley 1280 Comment
  CAS-BOT-BC293205  Ericameria suffruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 5068 Lassen Summit ridge of Diamond Mt. 2346 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
  CHSC77193  Ericameria suffruticosa G. Schoolcraft 1997-8-6 Lassen Diamond Mtn. 2316 Comment
  RSA42038  Erigeron aphanactis Ella Dales Cantelow 1941-5-24 3567 Lassen Balls Canyon S of Secret Valley; U. S. Hwy. 395 Comment
  CHSC29923  Erigeron bloomeri Robin Ondricek 1978-6-6 35 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1584 Comment
  CHSC64864  Erigeron bloomeri var. bloomeri Vernon H. Oswald 1995-6-26 6917 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  GMDRC7734  Erigeron bloomeri var. bloomeri J. M. Andre, G. Clifton 1993-6-1 33411 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
  JEPS89690  Erigeron bloomeri var. bloomeri Dean Wm. Taylor with Glenn Clifton 1990-6-12 10878 Lassen Forest Road 39N08 just as the road enters the valley as traveling from Adin (Ash Valley, Modoc Plateau); Modoc Plateau, Ash Valley, Forest Road 39N08 1554 Comment
  POM33272  Erigeron bloomeri var. bloomeri Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1136834  Erigeron bloomeri var. bloomeri George A. Fischer and Irwin H. Johnson 1933-7-12 F 217 Lassen Lassen National Forest 1722 Comment
  UC506989  Erigeron bloomeri var. bloomeri George A. Fischer and Irwin H. Johnson 1933-7-12 F 217 Lassen Lassen National Forest 1722 Comment
  SEINET11826499  Erigeron bloomeri var. bloomeri Unknown 1967-1 545 Lassen 10 yds off S side road Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline 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
  JEPS117585  Erigeron divergens Lowell Ahart, John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS127714  Erigeron divergens Alejandro Brambila, Michael Dolan 2016-7-20 CA 320 -169 Lassen Railroad trail north of Tule Mountain. Collection is North of gate on Modoc-Lassen county line. Comment
  JEPS88241  Erigeron divergens Vernon H. Oswald and Lowell Ahart 1996-6-17 7808 Lassen gravel bar on edge of river e Devils Corral Trailhead (Bizz Johnson Trail) (w of 6.0 milepost, trailhead located off of Hwy 36, ca. 7 mi w of Susanville); Modoc Plateau, Susan River 1402 Comment
  RSA516387  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  CAS-BOT-BC296850  Erigeron divergens Margaret Williams; Louella Bass 1972-10-22 EV 9 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  UC55075  Erigeron divergens Milo S. Baker 1898-7-12 306 Lassen The Bench 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
  CHSC65088  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1995-7-24 7129 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi ESE of Silver Lake on Forest Route 10 just S of its jct. with Forest Road 30N21. At roadside. 1935 Comment
  CHSC68734  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1997-5-27 8520 Lassen North of Susanville of Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.3 mi northeast of Hwy. 139. 1725 Comment
  POM32999  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1118206  Erigeron eatonii var. plantagineus A. Simontacchi 1940-6-4 801 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle 1828 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  UC1609229  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  CAS-BOT-BC300425  Erigeron elegantulus Roxana S. Ferris; Rena Duthie 1919-6-12 20 Lassen Madeline Comment
  CAS-BOT-BC300426  Erigeron elegantulus Mrs. C. C. Bruce 1898-6-1 2182 Lassen Madeline Plains Comment
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 Comment
  CHSC5208  Erigeron filifolius var. filifolius 1946-6-14 Lassen Eagle Lake. 1584 Comment
  CHSC80592  Erigeron filifolius var. filifolius Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10035 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  CAS-BOT-BC295182  Erigeron inornatus John Thomas Howell 1974-7-10 50561 Lassen Elysian Valley 1325 Comment
  JEPS100464  Erigeron inornatus var. inornatus Dean W. Taylor 2001-6-28 17820 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  SEINET5708488 Image available Erigeron inornatus var. inornatus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7715 Lassen Grasshopper Valley. Collected along CA 139.; Grasshopper Valley 1586 Comment
  CHSC67165  Erigeron linearis James D. Jokerst 1991-5-29 3314 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  CHSC92678  Erigeron linearis L. P. Janeway; B. Castro 2005-7-10 8485 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
  UC206218  Erigeron linearis Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  CAS-BOT-BC295779  Erigeron petrophilus var. sierrensis Michael A. Vincent 1999-6-9 8583 a 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
  CHSC12615  Erigeron philadelphicus Jannae Pitts 1972-6-23 265 Lassen On the road to Eagle Lake Field Station, 2 mi se of the station on the e side of the road. Comment
  HSC82189  Erigeron philadelphicus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6038 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS117505  Erigeron pumilus subsp. intermedius Lowell Ahart, John Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CHSC93688  Erigeron pumilus var. intermedius Lowell Ahart; John Dittes 2005-6-1 11853 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC76016  Erigeron pumilus var. intermedius Milo S. Baker 1894-7-1 Lassen Dixey Valley Comment
  JEPS57084  Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-2 7772 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC241567  Eriogonum baileyi var. baileyi John Thomas Howell; G. H. True 1973-7-31 50144 Lassen Janesville 1295 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
  UC1305745  Eriogonum collinum Noel H. Holmgren, James L. Reveal 1964-8-22 1723 Lassen 4 mi s Ravendale (48 mi ne of Susanville) Comment
  RSA766386  Eriogonum eximium Susan Hutchinson 1929-12 857 Lassen Desert slope of Sierra Nevada, Lassen. 1220 Comment
  UCD100069  Eriogonum fasciculatum var. polifolium Collector unknown 1919-5-1 289 Lassen Coyote Hill. Comment
  SEINET210992  Eriogonum gracilipes Noel H. Holmgren, Barton L. Bethe 1970-6-25 4378 Lassen Northe end if Petersen Mountain, near U.S. 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). T 23N, R 18E. Sec 6. Comment
  CAS-BOT-BC263047  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  CDA22616  Eriogonum maculatum T. C. Fuller 1980-8-6 20322 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  NY281710  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 1 mile W of Ca-NV stateline along Smoke Creek Road. 1341.1 Comment
  RSA176182  Eriogonum maculatum Noel Holmgren, James L. Reveal 1964-8-22 1724 Lassen 35 miles mortheast of Susanville, 18 miles south of Ravendale along U.S. 395 Comment
  UC85967  Eriogonum maculatum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC267345  Eriogonum marifolium var. marifolium John Thomas Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  NY803458  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-26 2946 Lassen Slopes west of The Mark Store 6 miles southeast of Milford, CA - nw1/4 1320 Comment
  CAS-BOT-BC268789  Eriogonum nidularium R. F. Hoover 1940-9-29 4643 Lassen Between Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC266367  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True 1973-8-1 50210 Lassen East slope of Diamond RAnge south of Susanville, Sierra Nevada 2164 Comment
  CAS-BOT-BC269924  Eriogonum nudum var. pubiflorum A. M. Vollmer; L. Beane 1953-7-1 30 Lassen Along Halls Flat road, beginning 6 mi. West of Susanville, to McArthur 1554 Comment
  CHSC57303  Eriogonum nudum var. pubiflorum Mary Meyer 1980-7-14 Lassen 1/4 mi southeast of rest stop on Hwy 395, south of Ravendale. 1645 Comment
  SEINET11261507  Eriogonum nudum var. pubiflorum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3925 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
  UC1542948  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1760 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  UC1542952  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-9-9 1778 Lassen 3 mi n Bieber; Ash Creek Wildlife Area 1258 Comment
  UCR17292  Eriogonum nudum var. pubiflorum Frank C. Vasek 1975-7-11 750711- 40 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  SEINET524403  Eriogonum ochrocephalum var. ochrocephalum Paul A. Opler 2003-6-29 Lassen Quarry, 5 mi N of Hallelujah Junction, access road to west of US 295. Comment
  UCD55294  Eriogonum ovalifolium var. ovalifolium Ellen Dean; Gary Schoolcraft 2006-5-16 3115 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  UC6570  Eriogonum prociduum Mrs. R. M. Austin June, 1894 Lassen Willow Creek Valley Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  POM165475  Eriogonum sphaerocephalum Geo. D. Butler 1910-5-20 1371 Lassen Dry rocky hill, Yreka. Comment
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Apr 25 2013
  UC1142996  Eriogonum sphaerocephalum var. halimioides August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest, Black Mtn. Headquarters 1706 Comment
  SEINET11261382  Eriogonum sphaerocephalum var. sphaerocephalum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3921 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  CHSC71247  Eriogonum strictum var. anserinum Vernon H. Oswald; Lowell Ahart 1998-6-4 9147 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 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
  NY762354  Eriogonum strictum var. anserinum H. D. D. Ripley 1944-5-30 5965 Lassen Secret Valley 1554.5 Comment
  UC1032334  Eriogonum strictum var. anserinum A. Simontacchi 1940-6-30 907 Lassen 2.2 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC85812  Eriogonum strictum var. proliferum Brandegee June 1892 Lassen Susanville Comment
  HSC63828  Eriogonum umbellatum Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  SEINET8513574  Eriogonum umbellatum O. Schilling, M. Gray, S. Jesselson, A. Rosenblum 2015-7-16 NV 030 -1125 Lassen Constantia Allotment, South on Red Rock Road until reach Highway 395, head South, second left into allotment, halfway up first hill 1469 Comment
  CAS-BOT-BC267886  Eriogonum umbellatum Ralph K. Gierisch 1968-7-11 3346 Lassen Harvey Valley 1676 Comment
  CAS-BOT-BC267888  Eriogonum umbellatum Hans Leschke 1957-9-21 1527 Lassen Rim of Cinder Cone Crater, Lassen Volcanic National Park 2087 Comment
  CHSC12489  Eriogonum umbellatum var. modocense Carol Weld 1969-7-16 62 Lassen 1 and 1/2 miles S. E. of Eagle Lake Field Station toward Hwy. 139. 1554 Comment
  CHSC6227  Eriogonum umbellatum var. modocense A. Santos 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  CHSC86975  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7203 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
  JEPS94469  Eriogonum umbellatum var. modocense Vernon Oswald and Lowell Ahart 1997-6-24 8640 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  JEPS88218  Eriogonum umbellatum var. modocense Vernon H. Oswald and Lowell Ahart 1996-6-17 7799 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville 1420 Comment
  RSA152682  Eriogonum umbellatum var. modocense I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16361 Lassen On ridge among volcanic boulders near NE end of Eagle Lake. Comment
  CAS-BOT-BC265096  Eriogonum umbellatum var. nevadense Louella Bass 1980-5-1 s.n. Lassen South side of Janesville on Hwy. 395, Sierra Nevada Comment
  CHSC111254  Eriogonum umbellatum var. nevadense L. P. Janeway; B. Castro 2012-7-3 10937 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  UC1483832  Eriogonum umbellatum var. nevadense G. Schoolcraft 1979-7-5 126 Lassen 5.2 mi. from Horne Ranch Road (intersection up Observation Lookout Road) 2286 Comment
  CAS-BOT-BC265098  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-12 1 -83 Lassen On Sears Road near Janesville, Sierra Nevada Comment
  CAS-BOT-BC262364  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  CHSC117539  Eriogonum vimineum Lowell Ahart; John Dittes 2016-7-13 21132 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC27646  Eriogonum vimineum Cindy Prouty 1978-6-27 24 Lassen SE of Eagle L., Black Mtn., S of Eagle L. Field Station. 1554 Comment
  CHSC30591  Eriogonum vimineum Leonard Walk 1972-6-22 2 Lassen 50 yrds. N. of Eagle Lake Biology Station kitchen. 1554 Comment
  CHSC61233  Eriogonum vimineum P. V. Caldwell 1972-6-17 227 Lassen Eagle Lake B. Station. Outside and around Tom Rodgers Hall. Comment
  POM105137  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  UC85765  Eriogonum vimineum T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC96443  Eriophorum gracile Gordon Leppig; T. LaBanca, L. Arguello 1997-6-28 508 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CHSC12440  Eriophyllum Robert W. Severin 1969-6-19 25 Lassen 3/4 mi. n E.L.B.S. 1569 Comment
  CHSC23514  Eriophyllum lanatum Wayne O. Baum 1971-7-6 71 -48 Lassen E. slope of Gallatin Peak. 1950 Comment
  CHSC4262  Eriophyllum lanatum K. R. Stern 1967-6-24 2414 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  SEINET10672051  Eriophyllum lanatum Jeffrey Huber 1971-6-2 Huber 139 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high rigdge and in sandy wash. 1402 Comment
  JEPS126470  Eriophyllum lanatum var. achilleoides Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-14 CA 350 -046 Lassen Drive North on Horse Lake Road. Comment
  UC1136992  Eriophyllum lanatum var. achilleoides George A. Fischer and Irwin H. Johnson 1933-7-14 F 250 Lassen 3.5 mi ne Grass Valley 1767 Comment
  UC1142994  Eriophyllum lanatum var. achilleoides August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest, Harvey Mtn. 2133 Comment
  CDA4968  Eriophyllum lanatum var. achilleoides T. C. Fuller 1963-6-1 10634 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CAS-BOT-BC301390  Eriophyllum lanatum var. grandiflorum R. Carter 1967-6-23 538 Lassen Along rd to Murrer's Meadow 1584 Comment
  UC1130323  Erodium cicutarium A. Simontacchi 1940-6-8 832 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 Comment
  JEPS124540 Image available Erodium cicutarium Laurel Loeblich 1964-6-30 58 Lassen 19 mi. north of Halleluja Junction (highways 40 and 395) on 395; 1 1/2 mi. south of Doyle. Comment
  UC1508837  Eryngium alismifolium Gary Schoolcraft 1981-8-11 558 Lassen Silva Flat Reservoir 1706 Comment
  UC648306  Eryngium alismifolium John Thomas Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  UC1487338  Eryngium mathiasiae Yusuf Sheikh and Lincoln Constance 1973-6-27 533 Lassen 3.4 mi N of Bieber (Bieber-Lookout Road 1 mi S of Modoc County line) 1219 Comment
  CAS-BOT-BC55196  Erysimum repandum John Thomas Howell 1934-6-10 11904 Lassen 3 miles south of Ravendale. Comment
  CHSC60857  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1993-6-28 5610 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
  CHSC66267  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1996-6-24 7866 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  SEINET13768666 Image available Erythranthe guttata Francis W. Pennell 1940-1 25777 Lassen Route 36, 6 miles east of Westwood. 1585 Comment
  CAS-BOT-BC153610  Erythranthe moniliformis Louella Bass 1973-6-17 124 Lassen Elysian Valley Comment
  CHSC66732  Erythranthe primuloides Vernon H. Oswald; Lowell Ahart 1996-8-1 8124 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  OBI76994  Erythranthe pulsiferae Anthony Baniaga 2011-6-30 403 Lassen Lassen Natl Forest. Fredonyer Pass quad T29N R10E sec 23 NE of SE 1526 Comment
  RSA234813  Erythranthe pulsiferae Francis W. Pennell 1940-6-10 25781 Lassen Northeast of West wood. 1646 Comment
  SEINET10528918  Erythronium purpurascens Marcus E. Jones 1897-7-7 Jones s.n. 1897 Lassen Lassen's Peak 6000 feet. 1830 Comment
  CAS-BOT-BC403149  Eschscholzia californica Elmer I. Applegate 1923-9-30 4033 Lassen Constantia Comment
  RSA518978  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UCR67467  Eucephalus breweri George K. Helmkamp 1990-10-4 M- 6 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  RSA183413  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its jct with Bassett Road (ca 2 miles S of US Hwy 299 and 4 miles SW of Adin). 1280 Comment
  UCD142787  Euphorbia serpillifolia J. M. Tucker 1950-7-25 1974 Lassen Road from Pittville, 35 miles northwest of Susanville. Comment
  CHSC117511  Euphorbia virgata Lowell Ahart; John Dittes 2016-7-13 21118 Lassen Along the drainage, about 100 yards south of the pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  UCR259111  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak 2409 Comment
  GMDRC6957  Festuca idahoensis J. M. Andre, T. La Doux, Senna & 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. 1733 Comment
  CAS-BOT-BC278433  Festuca idahoensis Clarence R. Quick 1962-6-17 62 -30 Lassen Western Pacific RR., S. of Halls Flat, Susanville-Pittville road near Blacks Mt. Experimental Station 1706 Comment
  UCD66336  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  CAS-BOT-BC278931  Festuca rubra George W. Gillett 1957-7-29 947 Lassen Lassen Volcanic National Park. Along trail between Butte Lake and Snag Lake 1859 Comment
  CHSC65110  Floerkea proserpinacoides Vernon H. Oswald; Lowell Ahart 1995-7-24 7127 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. 1920 Comment
  JEPS28492  Fragaria virginiana George W. Gillett 1957-7-22 884 Lassen s end Snag Lake (near campsite); Lassen Volcanic National Park 1850 Comment
  CHSC66397  Frangula rubra Vernon H. Oswald; Lowell Ahart 1996-6-17 7779 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Shrub growing in openings on a brushy slope on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  CAS-BOT-BC55731  Frangula rubra subsp. rubra John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49162 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC55732  Frangula rubra subsp. rubra Louella Bass 1973-5-29 EV 69 Lassen Elysian Valley 1325 Comment
  RSA122218  Fritillaria atropurpurea K. e. Bradshaw 1939-5-27 232 Lassen Lassen Forest. S. end Black Mt. Experimental Forest, Plot 39-1. 1753 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
  CHSC117191  Galium aparine Lowell Ahart; John Dittes 2016-6-7 21020 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  JEPS25525  Galium aparine Rimo Bacigalupi with Lincoln Constance 1959-7-16 7137 Lassen US Hwy 395 one fourth mi s junction of road to Smokey Creek (playa beside road) 1341 Comment
  POM203777  Galium bolanderi J. T. Howell 1934-7-3 12381 Lassen Near Dry Lake. Mtns. SE of Bieber. Comment
  SEINET11616108  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  CHSC93556  Galium boreale subsp. septentrionale Lowell Ahart; John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, 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
  UC157915  Galium multiflorum Milo S. Baker 1890-1 Lassen Milford 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
  UC28233  Galium trifidum M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  JEPS121280  Galium trifidum subsp. columbianum Lowell Ahart, John Dittes 2013-7-23 18895 Lassen Along S margin of the levee road, about 150 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS29538  Galium trifidum var. pusillum John Thomas Howell 1959-9-23 34886 Lassen n end of lake Lassen Volcanic National Park, Juniper Lake 2057 Comment
  RSA719874  Gayophytum diffusum subsp. diffusum Michael A. Vincent, K. Levings 2006-7-29 12902 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CDA18258  Gayophytum diffusum subsp. parviflorum G. D. Barbe 1974-8-2 1920 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  POM355365  Gayophytum diffusum subsp. parviflorum Christopher Davidson 1975-6-7 2759 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  POM38695  Gayophytum heterozygum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 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
  UC1137771  Gayophytum heterozygum August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  UC107796  Gayophytum racemosum T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  RSA74475  Gayophytum ramosissimum Milo S. Baker 1936-6-16 8364 Lassen About 30 miles north of Susanville 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
  UC878530  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen about a mi e Westwood 1524 Comment
  POM253026  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen About a mile east of Westwood. 1524 Comment
  RSA0026780  Geranium carolinianum Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  UC773888  Geranium viscosissimum L. R. Short and Wm. Gansberg 1936-6-12 S- 433 Lassen Burgess Spring Experiment Range Lassen Forest 1807 Comment
  CAS-BOT-BC143568  Geum triflorum John Thomas Howell 1934-7-6 12441 Lassen Harvey Valley Comment
  CAS-BOT-BC143570  Geum triflorum A. G. Brenneis 1928-7-3 B 14 Lassen Lassen National Forest, Jesson Valley 1463 Comment
  CHSC1549  Geum triflorum var. ciliatum 1944-7-5 Lassen Champ's Flat west of Eagle Lake. 1584 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
  RSA470172  Gilia brecciarum Christopher Davidson 1975-6-7 2757 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SEINET14626750  Gilia brecciarum subsp. brecciarum D. L. Neal 1960-5-7 R- 34 Lassen Red Rock area, ca 10 miles S of Doyle. 1463 Comment
  JEPS87404  Gilia capillaris Vernon H. Oswald and Lowell Ahart 1993-6-28 5616 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  JEPS94632  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen spur road on n side of Red Rock Rd. 0.6 mi e Hwy. 395 (s of Constantia) 1389 Comment
  SEINET14644501  Gilia inconspicua F. L. H. 1915-5-28 s.n. Lassen Honey Lake. Comment
  UC1776720  Gilia leptomeria G. Schoolcraft 1998-6-8 2732 Lassen Lower slopes of amedee in gravel pit 1249 Comment
  RSA716272  Gilia malior L. Ahart, John Dittes 2005-6-2 11989 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1428 Comment
  CHSC93696  Gilia modocensis Lowell Ahart; John Dittes 2005-6-2 11989 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  CAS-BOT-BC523867  Gilia modocensis Doris Kildale Gillespie 1930-5-12 9326 Lassen 2 mi N of Susanville on road to Alturas Comment
  CAS-BOT-BC280597  Glyceria elata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49473 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC117293  Gnaphalium palustre Lowell Ahart; John Dittes 2016-7-13 21108 Lassen Near where the drainage inters the pond, about 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
  JEPS121245  Gnaphalium palustre Lowell Ahart, John Dittes 2013-7-22 18861 Lassen 30 yards S of the man-made pond, about 120 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC26770  Gratiola ebracteata M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  OBI77052  Grayia spinosa Anthony Baniaga 2011-7-1 411 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  CDA3425  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen North of the cemetery, Janesville. 0 Comment
  UC1220391  Gypsophila paniculata var. paniculata T. C. Fuller 1963-7-16 11013 Lassen Janesville; hillslope n of cemetary Comment
  UC1035997  Hackelia cusickii Helen K. Sharsmith 1955-6-22 4496 Lassen 5 mi beyond Blue Lake (on road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UC24814  Hackelia cusickii M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mountains Comment
  JEPS67931  Hackelia micrantha Jos. Grinnell 1928-6-29 Lassen Butte Lake 1889 Comment
  CDA3149  Halogeton glomeratus E. E. Fix Jun 1949 Lassen Western Pacific Railroad right-of-way on Nevada-California line. Near Herlong. 0 Comment
  CDA3153  Halogeton glomeratus E. E. Fix Jun 1948 Lassen Western Railroad right-of-way. 0 Comment
  NY537530  Halogeton glomeratus T. H. Kearney 1951-8-20 28229 Lassen Honey Lake Valley near Herlong 1280.2 Comment
  UC1042370  Halogeton glomeratus Tho. H. Kearney and John Thomas Howell 1951-8-20 28229 Lassen near Herlong; Honey Lake Valley 1280 Comment
  CAS-BOT-BC305408  Helianthus annuus Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  SBBG94823  Helianthus annuus G. K. Helmkamp 1990-9-23 A- 11 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  CHSC91775  Helianthus bolanderi G. Douglas Barbe 1978-8-31 2424 Lassen Modoc National Forest. Roadside, Hwy 139, NW of Willow Creek Guard Station, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). 1417 Comment
  CAS-BOT-BC305661  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC118791  Helianthus cusickii L. P. Janeway; B. Castro 2015-6-5 11755 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
  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
  CAS-BOT-BC305664  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen On the grade east of Mapes on U. S. Highway #395 1371 Comment
  SEINET10497129  Heliotropium curassavicum var. oculatum Mary Susan Taylor 1974-1 Taylor 269 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UCD73908  Heliotropium curassavicum var. oculatum Rebecca Epanchin-Niell 2001-6-14 44 Lassen Jay Dow, Sr. Wetlands (owned by University of Nevada, Reno) on the south side of Honey Lake. Comment
  CHSC91196  Hemizonella minima Lowell Ahart; John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  JEPS1678  Hesperochiron californicus G. S. Crew and C. S. Robinson 1927-1 10 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  SBBG6101  Hesperochiron californicus H. and M. Dearing 1938-6-30 2230 Lassen 20 mi N of Susanville [Hwy 44] Comment
  UC1037238  Hesperochiron californicus Leo Whitney 1935-6-20 3253 Lassen Lassen Nat'l Forest, Fruit Grower's Supply Company, Camp 10 Comment
  UC1069088  Hesperochiron pumilus A. Simontacchi 1940-5-9 696 Lassen 4.4 mi. s.-s.e. of B.M. 7310 on Blacks Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  JEPS17743  Hesperolinon micranthum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5416 Lassen along Smoke Creek Ranch Rd. 6 mi e jnct. with U.S. 395; Bull Flat, Deep Creek 1428 Comment
  UC1523712  Hesperolinon micranthum Gary Schoolcraft 1981-6-25 478 Lassen East Fork of Wellard Creek 1584 Comment
  UC867806  Hesperolinon micranthum C. L. Hitchcock 1940-5-26 6618 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  HSC68915  Hesperolinon micranthum Gary Schoolcraft 1980-7-10 302 Lassen Along Hwy. 139 just N of turn off to Eagle Lake campground. 1585 Comment
  UCD32669  Hesperostipa comata Beecher Crampton 1954-7-6 2071 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  UCD85294  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an sagebrush flat, along US Hwy 395, 1 mile east of Johnstonville. Comment
  UCD107428  Heterocodon rariflorum Tim Kuhn 2006-7-19 12 Lassen Eagle Lake Ranger District. Comment
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC506909  Hieracium albiflorum George A. Fischer, Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen National Forest 1737 Comment
  CAS-BOT-BC318715  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  CAS-BOT-BC318716  Hieracium horridum Alice Eastwood 1912-9-1 2056 Lassen Mount Shasta 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
  SBBG8442  Hieracium scouleri H. and M. Dearing 1938-7-1 2247 C Lassen near Westwood Comment
  JEPS124840 Image available Hippuris vulgaris B. Corwin 1964-6-30 119 Lassen 16 miles north of Susanville. Comment
  CHSC80544  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald 2001-5-4 9997 Lassen Ash Creek Wildlife Area, Wayman Barn at the west end of Hunt Rd. 1267 Comment
  JEPS114655  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS87501  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  UCD55283  Holosteum umbellatum subsp. umbellatum Ellen Dean; Gary Schoolcraft 2006-5-16 3102 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  OBI77055  Hordeum brachyantherum Anthony Baniaga 2011-8-4 487 Lassen Lassen NF. About 1/2 mi WNW of Griffith Hill along 30n21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  CHSC5060  Hordeum jubatum D. L. Stites 1967-6-25 54 Lassen Ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  CHSC99515  Hordeum jubatum Lowell Ahart; John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC1137163  Hordeum jubatum August L. Hormay 1932-8-12 Lassen e edge Eagle Lake; Lassen National Forest, e edge Eagle Lake Comment
  SEINET10591500  Hordeum jubatum Vernon H. Oswald, Lowell Ahart 1995-8-14 Oswald 7189 Lassen T33N R14E S2 NE1/4, Modoc Plateau, sagebrush scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Growing in moist soil along the margin of a large roadside pond. 1646 Comment
  UCD85785  Hordeum marinum subsp. gussoneanum A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3368 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  CAS-BOT-BC514265  Horkelia fusca var. pseudocapitata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC143981  Horkelia fusca var. tenella Lassen 1927 G. S. Crew 1927-6-25 37 Lassen Norval Flat, Lassen National Forest 1747 Comment
  CAS-BOT-BC143984  Horkelia fusca var. tenella George W. Gillett 1957-7-29 942 Lassen Along trail between Butte Lake and Snag Lake, 1/4-mile above Butte Lake 1859 Comment
  CAS-BOT-BC55477  Hornungia procumbens Arnold Tiehm; Margaret Williams; Gary Schoolcraft 1986-5-12 10350 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  SEINET5342520  Hornungia procumbens A. Tiehm 1980-1 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs, 1.1 air miles NNW of Wendel. 1231 Comment
  NY170060  Hutchinsia procumbens A. Tiehm 1980-5-29 5749 Lassen N end of Honey Lake Valley, just N of Hot Springs, 1.1 air mi NNW of Wendel. 1231.4 Comment
  NY170061  Hutchinsia procumbens N. H. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1680 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
  UC1069096  Hydrophyllum capitatum var. alpinum A. Simontacchi 1940-5-10 692 Lassen 4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1951069  Hydrophyllum capitatum var. alpinum Debra Valov 2009-4-27 2009023 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET5518818  Hydrophyllum occidentale var. watsonii C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  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
  UC124657  Hypericum anagalloides T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  RSA746512  Hypericum perforatum K. M. Meyer, A. Townesmith 2007-7-19 140 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC401308  Hypericum scouleri Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  NY716915  Iliamna bakeri R. R. Halse 2004-7-8 6615 Lassen Along State Highway 139, ca. 6 miles north of Eagle Lake 1710 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
  SD7674  Ipomopsis congesta Mrs. R. M. Austin 1880-1 Lassen Lassen Peak. Comment
  CHSC4265  Iris missouriensis K. R. Stern 1967-6-24 2425 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  JEPS17345  Iris missouriensis W. L. Jepson 1918-8-4 7811 Lassen Horse Lake 1554 Comment
  CHSC60804  Isoetes howellii Vernon H. Oswald 1993-6-28 5622 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  CAS-BOT-BC324778  Iva axillaris P. Monnet 1913-7-4 826 Lassen Honey Lake 1219 Comment
  CHSC44875  Iva axillaris Lowell Ahart; John Thomas Howell 1974-7-9 529 Lassen Along the edge of Eagle Lake Road, about 3 miles north-west of Susanville. 1584 Comment
  HSC42417  Iva axillaris Barbara Kelly 1977-8-9 577 Lassen At a large mining tailing a few mi. N of Termo (7.9 mi. S of Madeline) at Rod and Gun Club Road. Comment
  CHSC64866  Iva axillaris subsp. robustior Vernon H. Oswald; Lowell Ahart 1995-6-19 6886 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.9 mi e of Hwy. 395, on the down-slope approaching Mud Flat. 1353 Comment
  RSA126721  Iva axillaris subsp. robustior Peter H. Raven, Otto T. Solbrig 1958-6-17 13265 Lassen Along Hwy 395, 11.8 miles NE of Litchfied Comment
  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-BC148543  Ivesia paniculata James R. Shevock 1986-7-20 11740 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles west of Madeline and U.S. highway 395 - Modoc Plateau 1550 Comment
  HSC77273  Ivesia paniculata Teresa Prendusi 1980-7-14 Lassen Ash Valley, along Ash Valley Rd., 15 mi. W of Madeline 1549 Comment
  RSA59709  Ivesia paniculata E. K. Balls 1950-5-19 14783 Lassen 16.5 miles W of Madeline on road from Adin 1677 Comment
  CAS-BOT-BC109934  Juncus John Thomas Howell 1976-7-19 51971 Lassen Sierra Nevada. On Gold Creek southwest of Susanville. 1386 Comment
  SEINET6336292  Juncus balticus B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11503 Lassen Blue Door Flat, 7 or 8 miles east of Highway 395 on county road 510 1774 Comment
  UC1133735  Juncus balticus A. Simontacchi 1940-5-17 738 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CHSC113074  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2013-7-23 18907 Lassen On the southwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS96127  Juncus bufonius var. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-24 7838 Lassen ca 0.5 mi s Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  JEPS96098  Juncus dudleyi Vernon H. Oswald and Lowell Ahart 1996-6-17 7817 Lassen Bizz Johnson Trail at 6.0 milepost e Devils Corral Trailhead (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
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Feb 14 2008
  UC1601869  Juncus ensifolius Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
  SEINET3507366 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake Comment
  CAS-BOT-BC110131  Juncus luciensis John Thomas Howell 1974-7-10 50538 Lassen Sierra Nevada. Elysian Valley (near Janesville). 1325 Comment
  UC1100948  Juncus mexicanus Malcolm A. Nobs and S. Galen Smith 1947-8-1 8230 Lassen irrigation ditch running sw into State Fish & Game nesting area on w end of Section 19 Madeline Plain Comment
  SEINET10533379  Juncus mexicanus Douglas G. LeDoux, David B. Dunn 1975-5-25 LeDoux 791 Lassen Collected 3 miles n of milford on hwy. 395 At honey lake campgrounds Comment
  UC1133633  Juncus nevadensis H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow Susanville 1524 Comment
  UC1142942  Juncus nevadensis A. L. Hormay 1941-6-18 3 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC1601786  Juncus nevadensis Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
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Jul 3 2013
  UC1601784  Juncus nevadensis Baker and Nutting 1894-7-3 Lassen Dixie Creek Comment
  JEPS105651  Juncus occidentalis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the ''22'' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain 1560 Comment
  SBBG126190  Juncus trilocularis P. F. Zika 2008-7-14 23893 Lassen S side of St Hwy 44, SE end of Grays Valley near Lodgepole 1730 Comment
  CDA39253  Juncus xiphioides Gordon Leppig 1998-7-12 945 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  CHSC96722  Juncus xiphioides Gordon Leppig 1998-7-12 945 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  HSC95274  Juncus xiphioides Gordon Leppig 1998-7-12 945 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1134300  Juniperus occidentalis A. Simontacchi 1940-6-5 820 Lassen 8.0 mi wnw of Harvey Valley Ranger Station; Halls Flat Quad., Lassen National Forest Comment
  UC1134311  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ene Chats; Sierraville Quad. 1569 Comment
  UCR164308  Juniperus occidentalis Maile Neel 2000-4-29 G- 3 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10834011  Juniperus occidentalis David B. Dunn 1956-7-3 Dunn 11918 Lassen Collected on rolling gravelly-rocky slopes with scattered juniper open field. Considerable Artemisia tridentata ( Hwy 395). Comment
  SEINET5334961  Juniperus occidentalis J. Vetter 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  UCR4282  Juniperus occidentalis var. australis Frank C. Vasek 1965-8-31 650831- 06 Lassen 3.8 mi west of the Ranger Station at Susanville Comment
  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
  CHSC60293  Juniperus occidentalis var. occidentalis Mary Ann Showers 1992-6-13 2531 Lassen East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. Lassen Volcanic National Park. 1841 Comment
  RSA235556  Juniperus occidentalis var. occidentalis Noel Holmgren, Patricia K. Holmgren 1970-7-28 4625 Lassen North end of Petersen Mountain, near US 395, 8 miles north of Halleluja Junction (junction with Calif. 70). 1524 Comment
  RSA519137  Juniperus occidentalis var. occidentalis George K. Helmkamp 1990-9-23 D- 6 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  RSA719706  Juniperus occidentalis var. occidentalis Michael A. Vincent, K. Levings 2006-7-29 12922 Lassen Along Rt. 395 pull-off, 3.1 miles north of Rt. 70, 7.7 miles north of Sierra County line Comment
  UCR3791  Juniperus occidentalis var. occidentalis Frank C. Vasek 1964-9-12 640912- 09 Lassen US Hwy 395, at Hwy rest area 12.2 mi south of Ravendale Comment
  UCR4289  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-8-31 650831- 05 Lassen c. 45 mi north of Susanville 1662 Comment
  NY20362  Juniperus osteosperma N. H. Holmgren 1970-7-28 4625 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SD139404  Juniperus osteosperma F. C. Vasek 1964-9-12 day 6 Lassen U. S. 395, 5.2 miles north of its junction with State Highway 70 (U. S.40) 1480 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  CHSC60409  Kelloggia galioides Mary Ann Showers 1992-6-13 2541 Lassen Lassen Volcanic National Park. Along trail from Snag Lake jct to Widow Lake. 1828 Comment
  CHSC6262  Kelloggia galioides W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 Comment
  JEPS97366  Kelloggia galioides Vernon H. Oswald and L. Ahart 1995-7-24 7133 Lassen T31N R7E ca. center of N side of Sec. 23, 6400 ft, High Cascade Range, Red Fir Forest. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  UC1136752  Kelloggia galioides George A. Fischer and Irwin H. Johnson 1933-7-14 255 Lassen Lassen National Forest 1783 Comment
  UC303069  Kelloggia galioides Pearl Safford Lassen Susanville [uncertain locality] Comment
  SEINET10869776  Kelloggia galioides Mary Susan Taylor 1974-1 Taylor 273 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UCR244048  Kochia americana Jim Andre 1993-6-1 19718 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC180801  Kochia scoparia Louella Bass 1981-12-1 s.n. Lassen Standish Comment
  RSA702594  Koeleria macrantha L. P. Janeway 2004-6-26 8149 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1132160  Koeleria macrantha A. Simontacchi 1940-7-8 945 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  OBI75889  Kyhosia bolanderi Anthony Baniaga 2011-8-16 499 Lassen Lassen Natl Forest. Along F.S. 10, ca. 1 mi NE of Cummings Spring. Red Cinder quad. T30N R8E sec 7SE of SW 1920 Comment
  CAS-BOT-BC340511  Lactuca serriola Margaret Williams; Steven Williams 1974-7-26 74 -L-6 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC5214  Lactuca tatarica subsp. pulchella 1944-8-11 Lassen Eagle Lake. 1584 Comment
  CHSC71383  Lactuca tatarica subsp. pulchella Vernon H. Oswald; B. Corbin, G. Schoolcraft 1998-7-13 9256 Lassen Hwy. 139 along the east shore of Eagle Lake. Roadside. 1560 Comment
  CHSC76088  Lactuca tatarica subsp. pulchella Lowell Ahart; Vernon H. Oswald 1999-9-13 8233 Lassen On the strand of Eagle Lake, west of Highway 139, near the south end of the lake and highway, Eagle Lake. 1554 Comment
  CAS-BOT-BC341487  Lagophylla ramosissima John Thomas Howell 1973-8-1 50156 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC341482  Lagophylla ramosissima David D. Keck; J. Clausen 1935-6-25 3760 Lassen Susanville, on yellow-pine covered hills just W. of town 1300 Comment
  JEPS94782  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald and Lowell Ahart 1998-9-8 9575 Lassen Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber; , Highway 299 1255 Comment
  RSA795323  Lagophylla ramosissima subsp. ramosissima L. Ahart, John Dittes 2010-7-31 16997 Lassen On the north side of the road, about 5 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  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
  UC1137764  Lathyrus brownii August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  CHSC106572  Layia glandulosa Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC71072  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1998-5-22 9109 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
  CHSC71224  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1998-6-4 9143 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  JEPS107446  Layia glandulosa Lowell Ahart, John Dittes 2005-6-1 11889 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
  RSA715552  Layia glandulosa subsp. glandulosa L. Ahart, John Dittes 2005-6-1 11889 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
  CHSC4842  Lemna trisulca R. Carter 1967-7-13 591 Lassen 5 mi e of Eagle Lake Field Station, at point where rd comes nearest to Willow Cr. 1560 Comment
  CAS-BOT-BC88739  Lepidium appelianum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-16 16529 Lassen 4.1 miles east of Bieber. Comment
  CAS-BOT-BC88820  Lepidium campestre Louella Bass 1973-6-15 110 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC112998  Lepidium campestre Lowell Ahart; John Dittes 2013-7-23 18886 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
  CDA37688  Lepidium latifolium Robin Breckenridge 2004-7-1 s.n. Lassen East of Susanville. 0 Comment
  CHSC117182  Lepidium perfoliatum Lowell Ahart; John Dittes 2016-6-7 21017 Lassen On the east edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) southwest of Bieber. 1397 Comment
  RSA716267  Lepidium perfoliatum L. Ahart, John Dittes 2005-6-2 11920 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction. 1460 Comment
  SFV1490  Lepidium perfoliatum I. L. Wiggins, D. B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. 1240 Comment
  NY90026  Lepidium perfoliatum D. B. Dunn 1971-6-2 17749 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, Junction of US 395 and California 70 Comment
  RSA152592  Lepidium perfoliatum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16332 Lassen 13.5 mi. E of Susanville. Comment
  SEINET10448701  Lepidium perfoliatum David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17749 Lassen 3 mi. S. Of hallelujah jct. On u.s. 395 & Calif 70. Along roadsides and in artemesia- grassland field. Comment
  UC1137585  Leptodactylon pungens A. Simontacchi 1940-6-30 911 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quad. Comment
  CHSC27644  Leptosiphon ciliatus Jerry Snodgrass 1978-7-10 46 Lassen Colman L., DE of Eagle L. 1962 Comment
  CHSC29931  Leptosiphon ciliatus Robin L. Ondricek 1978-6-20 63 Lassen On the e side of the s end of Eagle Lake in the Gallatin Burn. 1.8 mi s of Five Corners. 2011 Comment
  CHSC91188  Leptosiphon ciliatus Lowell Ahart; John Dittes 2005-6-2 11936 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
  SEINET3364444 Image available Leptosiphon harknessii Marcus E. Jones 1897-7-2 Lassen Susanville Comment
  UC584305  Lesquerella occidentalis subsp. occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2271 Lassen s Susanville (Bare summit ridge and ridges south west of Diamond Mt.); bare summit ridge and ridges sw of Diamond Mt. 2164 Comment
  CAS-BOT-BC334596  Leucanthemum vulgare Louella Bass 1978-7-11 78 -4 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC334598  Leucanthemum vulgare G. Schoolcraft 1987-6-17 1746 Lassen Along Hwy 36 about 3 miles east of Westwood 1554 Comment
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC508369  Leucocrinum montanum Louella Bass 1973-4-29 31 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  OBI48150  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  CHSC61168  Lewisia pygmaea Vernon H. Oswald; Lowell Ahart 1993-5-12 5387 Lassen Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. In a meadow on the N side of the road. 1719 Comment
  CDA7155  Leymus cinereus G. Schoolcraft 1993-9-18 s.n. Lassen 1 mile N of Sagehen on W side of Hwy 395. Comment
  JEPS103214  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mile N of Sagehen Summit on W side of Hwy 395 1706 Comment
  JEPS127710  Leymus cinereus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -165 Lassen Cold Spring Road N after Dorsey Butte. Comment
  UC573939  Leymus cinereus H. S. Yates 1936-8-12 9086 Lassen McKenzie Meadow Susanville Quadrangle Comment
  POM113953  Leymus triticoides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  RSA0035910  Lilaea scilloides Lowell A. Ahart, John Dittes 2008-6-20 14943 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC130709  Lilium pardalinum Louella Bass 1973-6-15 114 Lassen Elysian Valley 1325 Comment
  HSC15585  Lilium pardalinum subsp. pardalinum Fred J. Kindel 1955-7-8 Lassen Susan River Comment
  UCD116467  Limnanthes alba subsp. alba W. W. Robbins 1926-4-17 535 Lassen Grass Valley. Comment
  CHSC60774  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1993-6-14 5508 Lassen Lassen A21 (32N02), 5.3 mi E of Lassen 105 (32N28Y), near Summit Camp, ca. 7 mi (air) W of Eagle Lake. 1889 Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  JEPS107873  Linanthus ciliatus Lowell Ahart, John Dittes 2005-6-2 11936 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
  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
  JEPS107872  Linum lewisii var. lewisii Lowell Ahart, John Dittes 2005-6-2 11935 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  POM107663  Listera convallarioides Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  JEPS47654  Lithophragma parviflorum T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC428422  Lithophragma tenellum John Thomas Howell 1934-6-14 12129 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC60768  Lithophragma tenellum Vernon H. Oswald 1993-6-3 5478 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poisen Lake and Susanville. 1731 Comment
  UC496334  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen between Susanville and Janesville Comment
  SEINET12326115  Lithospermum californicum A. Seneres, Harold, N. 1983-1 104 Lassen Road 21 to Silver Lake. Lassen National Forest Comment
  CAS-BOT-BC269059  Lolium perenne John Thomas Howell; Gordon H. True 1973-8-1 50187 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC117201  Lomatium bicolor var. leptocarpum Lowell Ahart; John Dittes 2016-6-7 20975 Lassen 20 yards west of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 6.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC60806  Lomatium bicolor var. leptocarpum Vernon H. Oswald; Lowell Ahart 1993-6-28 5620 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  CHSC77178  Lomatium canbyi G. Schoolcraft 1993-4-27 2255 Lassen Ash Valley RNA/ACEC. 1554 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  RSA0049670  Lomatium nevadense var. nevadense Dean Wm. Taylor 2012-5-15 21196 Lassen Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley) 1676 Comment
  SEINET5333506  Lomatium nevadense var. nevadense D. H. French 1968-6-3 2883 Lassen Near Hwy, 395, 1.1 mi S of Ravendale, just behind gas station-cafe-bar building. Comment
  UC1123036  Lomatium nevadense var. parishii K. E. Bradshaw 1939-5-27 241 A Lassen Plot 39-1 Black Mt. Exp. Forest (Lassen Nat'l Forest); , Halls Flat Quad., Black Mt. Exp. Forest Comment
  UC1137734  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  CHSC42626  Lomatium nudicaule Vernon Oswald 1986-5-28 2047 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC106684  Lomatium plummerae B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC72293  Lomatium plummerae L. P. Janeway; Glenn Clifton 1998-7-8 5721 Lassen Ridgetop saddle about 2.5 mi northwest of Red Rock; at junction of Roads 28N08,19N10, 213, and 28N55. Top of north-facing Wyethia opening in open yellow pine forest. 1988 Comment
  CHSC68607  Lomatium ravenii Vernon H. Oswald; Lowell Ahart 1997-5-7 8404 Lassen Smoke Creek Ranch Rd. 2.9 mi east of Hwy. 395. 1359 Comment
  SEINET10693768 Image available Lomatium ravenii Lincoln Constance, Rimo Bacigalupi 1959-6-14 Constance 3672 Lassen Open, slightly alkaline flat with Artemisia, Blepharipappus, Cryptantha and Eriogonum. One mile south of Ravendale. 1463 Comment
  RSA125336  Lomatium tracyi P. H. Raven, Otto T. Solbrig 1958-6-16 13248 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  POM78598  Lomatium triternatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  SEINET222482  Lomatium triternatum var. macrocarpum Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8930 Lassen Upper Smoke Creek south side of Observation Peak 7.6 km northeast of Tye Patch Canyon summit 18.5 km airline distance 1700 Comment
  RSA584834  Lomatium vaginatum Bruce Bartholomew, M. Gilbert, L. Skog 1993-5-13 6555 Lassen Just S. of Ravendale., 40 deg. 47' 43'' N, 120 deg. 21' 40'' W. 1580 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
  UC1567406  Lotus denticulatus G. Schoolcraft 1989-6-5 1896 Lassen s of Adin (intersection of Hwy 139 and A2) 1341 Comment
  UC15657  Lotus nevadensis var. nevadensis Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  UC862219  Lotus purshianus var. purshianus A. A. Heller 1938-7-28 15300 Lassen just e Westwood Comment
  UCD169260  Lotus uliginosus S. L. Welsh; N. D. Atwood 2001-6-14 28145 Lassen Secret Valley Spring, at Cherry Creek rest stop, Hwy 395. 1520 Comment
  RSA122900  Lotus unifoliolatus G. A. Fischer, Irwin H. Johnson 1933-7-12 193 Lassen Grass Valley 1695 Comment
  RSA122901  Lotus unifoliolatus L. R. Short, J. Warren 1936-6-23 S- 447 Lassen Burgess Spring, Exp Range. Comment
  CHSC65101  Lupinus angustiflorus Vernon H. Oswald; Lowell Ahart 1995-7-24 7131 Lassen High Cascade Range. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just of Pine Creek. 1950 Comment
  SEINET5327673  Lupinus arbustus H. Durio 1979-5-23 s.n. Lassen Meyers Ranch, Adin 1372 Comment
  SEINET10490461  Lupinus arbustus subsp. arbustus Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 478 Lassen Ca 3 miles s of janesville at honey lake, rest area on us hwy 395; in Sagebrush-grass margin between jeffery pine-oak forest and honey lake 1250 Comment
  CHSC5285  Lupinus arbustus var. calcaratus 1927-6-1 Lassen Eagle Lake. Mt. Freedonyer. 2072 Comment
  UC1553386  Lupinus argenteus G. Schoolcraft 1988-8-24 1856 Lassen 16 mi e Adin; Ash Valley RNA/ACEC 1554 Comment
  CAS-BOT-BC208763  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-5-23 47353 Lassen Johstonville, 1 mile south, Highway 395 Comment
  CHSC909  Lupinus argenteus var. heteranthus L. Harman 1946-6-22 Lassen Webb's camp, Eagle Lake. 1554 Comment
  CHSC99140  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2008-6-19 14873 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS35945  Lupinus argenteus var. heteranthus D. B. Dunn 1956-7-3 11914 Lassen 6 mi e Susanville (collected at Jct of Hwy 395 and 36 near); e of Susanville Comment
  UC865100  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 mi w Doyle; w of Doyle 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
  UCR18734  Lupinus caudatus Frank C. Vasek 1975-7-11 750711- 15 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  RSA59517  Lupinus caudatus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 miles from junction of Highway 36 and 395. 1250 Comment
  RSA60369  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 miles south of Doyle. 1372 Comment
  SEINET10936587  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11914 Lassen Collected at jct of hwy 395 and 36 near johnstonville. 6 Mi. E of susanville. Open valley with sparse artemesia tridentata, arid grassland well below Woodland. Comment
  SEINET530758  Lupinus caudatus var. caudatus Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  RSA3037  Lupinus confertus Carl B. Wolf 1931-9-6 2404 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  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
  RSA339168  Lupinus confertus Margaret J. Williams 1983-7-31 s.n. Lassen Roadside near Janesville. 1280 Comment
  UCR18740  Lupinus corymbosus Frank C. Vasek 1975-7-11 75011- 21 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC91961  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
  CHSC60355  Lupinus lepidus var. lobbii Mary Ann Showers 1992-6-27 2602 Lassen Lassen Volcanic National Park. Pumice Flat northwest of Crescent Crater. 2194 Comment
  UC1137588  Lupinus lepidus var. lobbii A. Simontacchi 1940-6-30 909 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1537122  Lupinus lepidus var. sellulus Gordon H. True Jr. 1936-6-25 535 Lassen slopes e Harvey Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  UCD107964  Lupinus leucophyllus R. Tofsrud 1951-7-13 s.n. Lassen Bieber area, Albaugh Ranch. Comment
  NY747375  Lupinus leucophyllus var. leucophyllus H. D. D. Ripley 1943-6-13 5679 Lassen Milford 1265 Comment
  SEINET10452640  Lupinus meionanthus Taylor 1982-8-27 Taylor 5050 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
  CHSC117186  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes 2016-6-7 21018 Lassen On the west edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  NY747487  Lupinus nevadensis B. J. Cox 1971-6-2 2595 Lassen Hallelujah Jct. intersection of U.S. 395 and Calif. Hwy 70 1433 Comment
  CHSC5288  Lupinus obtusilobus 1944-7-26 Lassen Juniper Lake. 2055 Comment
  RSA0005617  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC108001  Lupinus polycarpus Lowell Ahart; John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  POM24043  Lupinus polycarpus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UCR79417  Lupinus polyphyllus subsp. superbus J. T. Howell, G. H. True, Margaret Williams 1973-6-28 49412 Lassen Sierra Nevada Mtns/ Modoc Plateau, Elysian Valley, west of Janesville 1326 Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  UC1523742  Lycium barbarum Gary Schoolcraft 1981-7-21 522 Lassen Hayden Hill townsite 1767 Comment
  HSC95311  Lycopus uniflorus Gordon Leppig 1998-8-17 1051 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  CAS-BOT-BC342645  Madia citrigracilis John Thomas Howell 1934-7-8 12494 Lassen Spalding's, Eagle Lake 1584 Comment
  SEINET11601319 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  CAS-BOT-BC343693  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia Comment
  JEPS89656  Madia exigua Dean Wm. Taylor with Robert A. Price 1988-6-4 9769 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek, Fall R. Valley); Pit R. Watershed, Fall R. Valley 1036 Comment
  UC1567446  Madia exigua G. Schoolcraft 1989-6-7 1903 Lassen lower ne slopes Shaffer Mtn. 1432 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-BC343057  Madia gracilis John Thomas Howell 1974-7-10 50552 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC343061  Madia gracilis Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale 1680 Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC347439  Malacothrix floccifera Louella Bass 1974-7-1 EV 153 Lassen Elysian Valley 1325 Comment
  JEPS102664  Malacothrix glabrata V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10038 Lassen N-NE of Doyle (dirt road bordering the E side of Turtle Mountain) 1828 Comment
  SEINET11601669 Image available Malacothrix glabrata F. B. Henning 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  UCD54571  Malvella leprosa Ellen Dean; Dawn Cunningham 2005-10-25 2754 Lassen E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond. 1248 Comment
  JEPS114749  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  CHSC66389  Medicago lupulina Vernon H. Oswald; Lowell Ahart 1996-6-17 7812 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  JEPS88240  Medicago lupulina Vernon H. Oswald and Lowell Ahart 1996-6-17 7812 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, on edge of trail at the 6.0 mi. post e. of Devils Corral Trailhead); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UCD107934  Medicago sativa P. B. Kennedy 1927-9-1 s.n. Lassen Standish. Comment
  CHSC68889  Melica fugax Vernon Oswald; Lowell Ahart 1997-6-24 8645 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  SEINET208829 Image available Melica fugax Jack Major 1966-6-24 Lassen Modoc National Forest ; Long Valley 3 miles airline southwest of Patterson Guard Station northeastern Lassen County. 2088 Comment
  CHSC30586  Melilotus indicus P. V. Caldwell 1972-6-30 270 Lassen Jct. of Horse Lake Rd. and Hwy. 395. Comment
  SJSU11391  Mentha arvensis J. W. Tilden 1960-6-27 1521 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CHSC105237  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC106171  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-8-30 17089 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
  RSA7885  Mentzelia albicaulis H. A. Barker 1927-7-15 807 Lassen Desert east of Beckwith [Beckwourth], near highway. Comment
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Dec 30 2016
  HSC42457  Mentzelia albicaulis Barbara Kelly 1977-8-9 569 Lassen On Rd. from Adin to Madeline, 10.1 mi. E of Madline. Comment
  JEPS124817 Image available Mentzelia albicaulis N. L. Rechen 1964-7-1 73 Lassen 1 mile north of Susanville. H. 139 Comment
  CHSC30625  Mentzelia congesta E. C. Taylor 1975-7-19 83 Lassen Summit of Galatin Peak. 2117 Comment
  SEINET8707736  Mentzelia congesta B. L. Wilson, D. Lytjen, N. Otting. 2005-7-27 11547 Lassen Pine Dunes, an exclosure, S of Buckhorn Road and ca 1 mile NW of Buckhorn Reservoir. 1716 Comment
  CHSC117298  Mentzelia dispersa Lowell Ahart; John Dittes 2016-7-13 21124 Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC15839  Mentzelia laevicaulis Jim Vaughn 1956-8-17 Lassen Hwy. 36, 1 mi. W of Susanville. Comment
  RSA0034475  Mentzelia laevicaulis Geo. R. Julian 1962-8-3 s.n. Lassen California Highway #139 north of Susanville. Comment
  SJSU8590  Mentzelia laevicaulis M. D. Fleschner 1965-7-12 112 Lassen by Hwy 395 near S shore Honey L c. 2 mi SE of Milford Comment
  UC420650  Mentzelia montana T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC428456  Micranthes aprica 1927-5-20 1 Lassen Lassen National Forest. Norval Flat. 1747 Comment
  CHSC99239  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  CHSC89724  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
  JEPS126531  Microseris nutans Lowell Ahart, John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  SEINET10475172  Microseris nutans Mary Merello 1993-6-28 Merello 755 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  CAS-BOT-BC349302  Microseris nutans G. Schoolcraft 1993-6-29 2317 Lassen Ash Valley, 16 mi E. of Adin 1554 Comment
  UCD55154  Microsteris gracilis Ellen Dean 2006-5-15 3042 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  SEINET10902895  Microsteris gracilis Mary Susan Taylor 1974-5-4 Taylor 227 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
  RSA104219  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9803 Lassen Hills between Madeline and Likely 1524 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
  UCR201581  Mimulus Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  JEPS88205  Mimulus breweri Vernon H. Oswald and Lowell Ahart 1996-6-24 7866 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, on the W side of the meadow ca. 0.2 mi S of the cabin. 1633 Comment
  CDA41435  Mimulus floribundus L. Ahart, John Dittes 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  RSA716144  Mimulus floribundus L. Ahart, John Dittes 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  UC726697  Mimulus microphyllus A. A. Heller 1938-6-22 15183 Lassen 1 mi e Westwood 1524 Comment
  UC773851  Mimulus microphyllus L. R. Short and J. Warren 1936-6-10 S- 417 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1856 Comment
  CDA38387  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen By south side of Highway 44, vicinity of Bogard Campground. Comment
  UCD122771  Mimulus nanus S. E. Schoenig 1998-7-5 98- 72 Lassen by S side of Hwy 44 vicinity of Bogard campground. 1737 Comment
  SEINET10570251  Mimulus nanus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17798 Lassen 6 mi n of halleluja hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  HSC63954  Mimulus nanus var. mephiticus Teresa Prendusi 1980-7-1 Lassen Champ's Flat 1707 Comment
  POM252823  Mimulus nanus var. mephiticus A. A. Heller 1938-6-22 15188 Lassen About 1 1/8 miles south of Westwood. 1524 Comment
  POM297719  Mimulus nanus var. mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat. Comment
  RSA126736B  Mimulus nanus var. mephiticus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  RSA536394  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-18 627 Lassen Gray's Valley, 4 miles N of USFS Bogard Work Center. 1715 Comment
  RSA536396  Mimulus pygmaeus Beth Corbin 1991-6-26 633 Lassen Big Merrill Flat. 14 miles NW of Susanville. 1790 Comment
  JEPS19730  Mimulus suksdorfii Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5990 Lassen 7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Rail Road, just e of U.S. Highway 395); on Southern Pacific Rail Road 1676 Comment
  RSA536402  Mimulus suksdorfii Beth Corbin 1991-6-3 620 Lassen SW Harvey Valley, ca. 200 m NE of Whitehorse Well, ca. 6 mi N if USFS Bogart Work center. 1700 Comment
  CHSC13637  Monardella odoratissima M. S. Taylor 1974-7-3 275 Lassen Abundant along roadsides ca. 5 mi s of Eagle Lake and Gallatin Beach. 1524 Comment
  CAS-BOT-BC221781  Monardella odoratissima L. P. Janeway 1990-7-4 3771 B Lassen Ca 0.9 mi NE of Meadowview [Mountain View] Peak 1981 Comment
  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
  RSA505703  Monardella odoratissima subsp. glauca G. H. True 1938-7-14 961 Lassen Milford Grade, just noth of summit. 1768 Comment
  UC1037268  Monardella odoratissima subsp. glauca Leo Whitney 1934-7-4 1783 Lassen 3 miles northwest of Eagle Lake; Lassen National Forest 1584 Comment
  UC295853  Monardella odoratissima subsp. glauca H. M. Hall 1925-8-30 12213 Lassen 27 mi s Alturas Comment
  CAS-BOT-BC213933  Monardella odoratissima subsp. pallida Clare B. Hardham 1969-8-28 17455 Lassen Slope west of Janesville, Sierra Nevada Comment
  UC25488  Monardella odoratissima subsp. pallida M. S. Baker and Frank Nutting 1894-7-28 Lassen mts. s Eagle Lake Comment
  CHSC64782  Monolepis nuttalliana Vernon H. Oswald 1995-5-31 6808 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  UC1746003  Monolepis nuttalliana Annetta M. Carter 1945-9-30 1721 a Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  JEPS28404  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen 1 mi above Butte Lake (Lassen Volcanic National Park, Widow Lake Trail); Lassen Volcanic National Park, Widow Lake Trail 1905 Comment
  NY497728  Montia chamissoi G. Schoolcraft 1993-6-1 2272 Lassen Upper Secret Creek, south of Tule Patch Spring 1463.0 Comment
  UC1136741  Montia chamissoi A. Simontacchi 1940-5-21 763 Lassen 4.1 mi sse of Blacks Mountain (Lassen National Forest); Lassen National Forest 1737 Comment
  UC1776709  Montia chamissoi G. Schoolcraft 1994-7-7 2452 Lassen About 1 mile W of Boot Lake 2194 Comment
  CHSC77226  Montia fontana G. Schoolcraft 1995-5-16 2478 Lassen 2 mi. east of Bull Flat. Growing in spring. 1615 Comment
  CAS-BOT-BC445066  Montia linearis Louella Bass 1973-4-23 27 Lassen Elysian Valley. 1325 Comment
  CAS-BOT-BC262634  Muhlenbergia asperifolia John Thomas Howell; G. H. True 1973-8-1 50147 Lassen In Mountain Meadows east of Westwood 1554 Comment
  RSA129317  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen Near Red Rock. 1341 Comment
  UC1101599  Muhlenbergia asperifolia Malcolm A. Nobs and S. Galen Smith 1949-8-20 1480 Lassen marshy banks of creek 1 mi n Doyle; Honey Lake Valley, Long Creek Comment
  UC1137155  Muhlenbergia asperifolia August L. Hormay 1932-8-12 Lassen se edge of lake Lassen National Forest, Eagle Lake Comment
  RSA129384  Muhlenbergia filiformis H. S. Yates 1936-8-12 6018 Lassen Susanville. 1524 Comment
  UC1024665  Muhlenbergia filiformis Leo Whitney 1934-8-15 2184 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UC589840  Muhlenbergia filiformis H. S. Yates 1936-8-12 6081 Lassen McKenzie Meadow Susanville Quadrangle 1524 Comment
  UC60836  Muhlenbergia jonesii M. S. Baker and Frank Nutting 1894-7-30 Lassen near Silver Lake Comment
  CAS-BOT-BC275082  Muhlenbergia richardsonis Malcom A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline Comment
  RSA256322  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1973-6-5 6236 Lassen 35 miles NW of Susanvill, near Pittville sing on Hwy 44 1738 Comment
  UCD86899  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 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
  JEPS107463  Muilla transmontana Lowell Ahart, John Dittes 2005-6-1 11855 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CAS-BOT-BC515650  Muilla transmontana H. D. Ripley; R. C. Barneby 1944-5-29 5953 Lassen South of Jamesville 1280 Comment
  UC1143006  Myosurus apetalus August L. Hormay 1934-5-14 Lassen Gray's Flat Well; Lassen National Forest 1706 Comment
  CHSC107334  Myosurus minimus Lowell Ahart; John Dittes 2011-6-21 17526 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC112462  Myosurus minimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18726 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC64893  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6895 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  RSA0062303  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC77217  Myriophyllum quitense G. Schoolcraft 1996-7-10 2533 Lassen Willow Creek, ne. of Susanville. 1432 Comment
  JEPS45716  Myriophyllum quitense W. L. Jepson 1918-8-16 8002 Lassen Merrillville 1524 Comment
  CHSC30584  Myriophyllum sibiricum P. V. Caldwell 1972-6-16 264 Lassen 3/4 miles E, on Forest Rd. 5, 1 1/2 miles from the station in Kildeere ond. Comment
  SEINET2055396  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the South side of Buckhorn road to Ravendale, about 6 road miles West of state line 1698 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
  CHSC91324  Nama densa var. densa Lowell Ahart; John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction. 1461 Comment
  JEPS107300  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction 1461 Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  CHSC68897  Navarretia breweri Vernon Oswald; Lowell Ahart 1997-6-24 8605 .2 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  UC1184057  Navarretia breweri Jean Langenheim 1957-6-22 4365 Lassen Said Valley Reservoir, ne part of Lassen County Said Valley Reservoir Comment
  UCD34872  Navarretia breweri Beecher Crampton 1964-6-26 7088 Lassen Lassen County, ca. 3.5 miles N.W. of Susanville, Gray's valley 3 miles N.W. of Bogard Ranger Station. Comment
  CHSC29859  Navarretia capillaris Robin L. Ondricek 1978-7-6 90 Lassen On the w side of Lower Dry Lake. 1645 Comment
  CHSC4268  Navarretia divaricata K. R. Stern 1967-6-24 2418 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  UC773937  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spring Experiment Range Lassen Forest 1844 Comment
  CHSC99105  Navarretia intertexta Lowell Ahart; John Dittes 2008-6-22 15028 Lassen Along a small natural drainage, about 120 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  CHSC58847  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5101 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. On bed of lake. White-flowered plants collected at McCoy Flat Reservoir. 1745 Comment
  CHSC99510  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2008-6-22 15031 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS19816  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 Lassen 7 mi n Madeline (just e of U.S. Highway 395 (about 1 mi n of Sage Hen siding on S.P. Railroad)) 1676 Comment
  SJSU11519  Navarretia leucocephala subsp. bakeri R. L. Fisher 1958-6-16 Lassen Madeline Plains 6 mi S of Madeline 1615 Comment
  SJSU11520  Navarretia leucocephala subsp. bakeri J. W. Tilden 1958-6-27 1295 Lassen Madeline, Madeline Plains 1615 Comment
  CHSC67574  Navarretia leucocephala subsp. leucocephala James Jokerst 1983-7-24 1878 Lassen Near madeline Plains. Vernal pool. 1614 Comment
  JEPS19814  Navarretia leucocephala subsp. minima Rimo Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  UC909096  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 a Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  HSC96700  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1986-6-24 8183 Lassen Along SR 395 58.9 mi. N of jct. with SR 36 Comment
  SEINET10496833  Navarretia propinqua Mary Susan Taylor 1974-1 Taylor 277 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC89726  Navarretia sinistra subsp. sinistra L. P. Janeway 2004-6-26 8148 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
  JEPS27169  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 1673 Lassen about 4 mi sw Gold Run Creek junction with Richmond Road (Gold Run Creek, s of Susanville); Gold Run Creek Comment
  POM73805A  Nemophila parviflora var. austiniae Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  UC604678  Nemophila pedunculata Farris Farris 1935-5-20 Lassen five mi sw Susanville; sw of Susanville 1341 Comment
  CHSC65042  Neoholmgrenia andina Vernon H. Oswald; Lowell Ahart 1995-7-5 6959 Lassen Modoc Plateau. North of Honey Lake at Bull Flat on Smoke Creek Ranch Rd., 10.3 mi e of Hwy. 395. At roadside. 1432 Comment
  SEINET4143037  Neoholmgrenia andina Noel H. Holmgren, Patricia K. Holmgren 1980-7-5 9521 Lassen Upper Smoke Creek drainage, 20.4 km (12.7 mi) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale.; 0 1580 Comment
  CAS-BOT-BC349855  Nestotus stenophyllus Alice Eastwood; John Thomas Howell 1940-6-15 8314 Lassen Upper Willow Creek east of Hayden Hill Comment
  UC1137647  Nestotus stenophyllus A. Simontacchi 1940-5-17 749 Lassen 1.1 mile SSW of Dixie Spring 1699 Comment
  CHSC31980  Nicotiana attenuata L. Ahart 1974-7-9 544 Lassen Along Hwy 395, 1 mi n of jct Hwy 70 and Hwy 395. 1524 Comment
  CHSC55804  Nicotiana attenuata Vernon H. Oswald 1991-9-23 4875 Lassen Lassen Volcanic Park. Butte Lake in the northeast corner of the park. Collected on the strand of the lake at its outlet; along the east side of the lake. 1841 Comment
  HSC21264  Nicotiana attenuata R. G. Means 1962-7-4 67 Lassen 7 mi. N of Susanville, Hwy. 139 1585 Comment
  UC1609113  Nothocalais troximoides Vernon H. Oswald and Lowell Ahart 1993-6-14 5504 Lassen Champs Flat Rd. (Lassen A21/105, Forest 32N02) 1.8 mi n Hwy 44 (between Poison Lake and Susanville) 1749 Comment
  CAS-BOT-BC400059  Nuphar polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10-15 miles west from Amedee 1219 Comment
  HSC16519  Oenothera californica R. G. Means 1962-7-4 64 Lassen 10 mi. N of Doyle, Hwy. 395 1220 Comment
  CHSC106578  Oenothera deltoides C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  OBI48977  Oenothera deltoides Lewis S. Rose 1940-6-16 40598 Lassen Buntinville 1280 Comment
  SEINET10491875  Oenothera deltoides subsp. piperi Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2591 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and calif hwy 36 to susanville, near johnstonville. Assoc; purshia-artemesia. 1311 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  CHSC29938  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 71 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  UCR248227  Onopordum acanthium D. B. Joley 1976-6-16 001 Lassen West side of Grasshopper Lake, on Hwy 139, 33 mi north of Susanville. 1626 Comment
  CAS-BOT-BC350039  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen About a mile east of Westwood 1524 Comment
  UCD134723  Oreostemma alpigenum var. andersonii Ratliff 1966-7-15 9 Lassen Lassen Forest. Lower Pine Creek - PLDT 49. 1676 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
  CAS-BOT-BC500270  Orobanche uniflora subsp. occidentalis Doris Kildale Gillespie 1930-5-13 9368 Lassen Between Susanville and Janesville Comment
  RSA14096  Orthocarpus campestris Elmer I. Applegate 1929-6-24 5884 Lassen North edge of the town of Beiber, Pit River. Comment
  SEINET10549655  Orthocarpus copelandii Mary Susan Taylor 1974-1 Taylor 307 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC266614  Orthocarpus cuspidatus Lassen 1927 G. S. Crew 1927-7-15 66 Lassen 1 mile W Bogard Ranger Station 1737 Comment
  UC1137581  Orthocarpus cuspidatus subsp. cryptanthus A. Simontacchi 1940-7-8 926 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC773854  Orthocarpus cuspidatus subsp. cryptanthus L. R. Short and J. Warren 1936-6-23 S- 453 Lassen Burgess Spr. Exp. Range; Lassen Forest, Burgess Spr. Exp. Range 1743 Comment
  SEINET13756747  Orthocarpus cuspidatus subsp. cryptanthus N. H. Holmgren, Patricia K. Holmgren 1978-6-12 8933 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance east-southeast of Ravendale. 1768 Comment
  JEPS98391  Oryzopsis exigua Vernon H. Oswald, G. Schoolcraft, M. Dolan, and B. Corbin 2000-6-18 9929 Lassen E of Ravendale (E-NE of the lookout on Observation Peak) 2377 Comment
  POM82978  Osmorhiza berteroi Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC125352  Oxytheca dendroidea subsp. dendroidea T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC99145  Packera cana Lowell Ahart; John Dittes 2008-6-19 14877 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1924213  Packera eurycephala var. eurycephala Debra Valov 2004-6-9 2004270 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  UC1037307  Packera pauciflora Leo Whitney 1934-7-24 1583 Lassen 7-8 mi sw of Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest, Bridge Creek Camp 1737 Comment
  HSC95271  Packera pseudaurea var. pseudaurea Gordon Leppig 1998-7-12 948 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC10386  Paeonia brownii J. T. Howell 1955-7-19 30820 Lassen East side of Beckwourth Pass 1493 Comment
  CAS-BOT-BC259609  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE of Shaffer Mountain 1356 Comment
  CHSC65122  Pectiantia pentandra Vernon H. Oswald; Lowell Ahart 1995-7-24 7142 Lassen Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. 1905 Comment
  CHSC64871  Pectocarya setosa Vernon H. Oswald; Lowell Ahart 1995-6-19 6892 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. On a slope on the n side of the road. 1383 Comment
  JEPS10727  Pedicularis groenlandica Chesnut and Drew Lassen Lassen Peak Comment
  HSC20946  Pedicularis semibarbata H. E. Parks, S. T. Parks Jun 1928 237 Lassen Drakesbad, Mt. Lassen, E side 1524 Comment
  POM44032  Pedicularis semibarbata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  JEPS95203  Pellaea brachyptera Gary Schoolcraft 1996-3-31 2518 Lassen 4 miles SW of Susanville. 1493 Comment
  JEPS11489  Penstemon cinicola Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  JEPS8094  Penstemon davidsonii var. davidsonii W. L. Jepson 1910-6-11 4117 Lassen Cinder Cone 2133 Comment
  SD77352  Penstemon deustus Francis W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1096 Comment
  RSA177476  Penstemon deustus subsp. sudans R. M. Straw 1962-6-29 2198 Lassen 10 miles W of Susanville on Cal 36. 1580 Comment
  CHSC4862  Penstemon gracilentus R. Carter 1967-7-7 580 Lassen Collected ca. 20 yds from e shore of small reservoir. Dean's Meadow. Comment
  HSC69068  Penstemon gracilentus Gary Schoolcraft 1980-8-13 352 Lassen N face of Diamond Mtn., S of Susanville 1982 Comment
  NY600703  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen East slope of Tule Mountains 1770 Comment
  SEINET10917288  Penstemon gracilentus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1900 Comment
  UC1063186  Penstemon gracilentus A. Simontacchi 1940-6-20 851 Lassen 4.1 mi w Harvey Mountain Lookout; Lassen National Forest, Hall's Flat Quad. Comment
  UC1483843  Penstemon gracilentus G. Schoolcraft 1979-7-3 110 Lassen 4.3 mi up the road from Observation Peak (near Curlleaf Mtn.); up rd from Obseration Peak, near Curlleaf Mtn. 2133 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
  NY600697  Penstemon gracilentus K. A. Vincent 1986-7-19 4382 Lassen Sierra Nevada, Roop Mountain; along CA A1 at Eagle Lake Summit, ca. 7.6 miles north of junction CA 36, ca. 7 air miles northwest of Susanville. 1932.4 Comment
  UCD124179  Penstemon gracilentus K. M. Meyer; A. Townesmith 2007-7-23 157 Lassen Lassen National Forest. 3.9 miles southwest on 32N10 off Hwy 44. (Turn at rest area). 503 Comment
  CHSC68882  Penstemon janishiae Vernon Oswald; Lowell Ahart 1997-6-24 8644 Lassen South of Susanville near the small pool on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  NY627264  Penstemon neotericus J. T. Howell 1973-7-10 49758 Lassen Near Westwood, Sierra Nevada 1554.5 Comment
  POM195120  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood. 1494 Comment
  UC423645  Penstemon neotericus David D. Keck 1930-7-23 957 Lassen two mi e Westwood; Sierra Nevada, e of Westwood 1493 Comment
  HSC22984  Penstemon neotericus John Pratt 1970-7-11 69 Lassen Dyer Mtn. 1829 Comment
  RSA519227  Penstemon neotericus Karl Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mtn. Along CA A1 ca 4 mi NW of jct CA 36, site ca 6 air miles WNW of Susanville. 1738 Comment
  SEINET5329199 Image available Penstemon neotericus J. T. Howell 1973-7-10 49758 Lassen near Westwood 1554 Comment
  JEPS7228  Penstemon newberryi var. newberryi W. L. Jepson 1910-6-11 4116 Lassen Cinder Cone 2133 Comment
  NY640119  Penstemon procerus var. procerus N. H. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  CHSC12441  Penstemon roezlii Robert W. Severin 1969-6-20 4 Lassen 4 mi s of E. L. B. S. in Dean's Meadow. Comment
  CHSC5913  Penstemon roezlii R. Gein 1946-6-26 Lassen Eagle Lake. Pine Creek bridge. 1584 Comment
  CHSC59571  Penstemon roezlii Mary Meyer 1980-5-20 524 Lassen Along ridge above Secret Creek. 1432 Comment
  CHSC7753  Penstemon roezlii Beverly J. Wise 1969-5-15 109 Lassen 24.5 mi. East on Hwy 395 on the West side of Hwy. 1554 Comment
  NY641735  Penstemon roezlii K. A. Vincent 1986-6-14 4321 Lassen Upper Long Valley; along east side of US 395, ca. 5.5 miles north of jct. US 70, ca. 13.2 road miles north of Bordertown and Nevada state line 1463.0 Comment
  NY650137  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass 1615.4 Comment
  SEINET201571  Penstemon roezlii A. Cronquist, AH Holmgren 1959-6-18 8483 Lassen 5 mi S of Adin Comment
  SEINET226061  Penstemon roezlii M. Lavin 1982-5-30 4122 Lassen E of Hallelujah Junction 22 air mi NW of Reno W side of Petersen Mtns 1676 Comment
  CAS-BOT-BC239493  Penstemon rydbergii var. oreocharis A. M. Vollmer; L. Beane 1953-7-1 78 Lassen Along Halls Flat road beginning 6 miles west of Susanville to McArthur 1554 Comment
  NY651252  Penstemon rydbergii var. oreocharis G. Schoolcraft 1985-6-12 1418 Lassen Edge of Grasshopper Valley, at south end. 1615.4 Comment
  NY651293  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 3 miles east of Westwood 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
  UC1063480  Penstemon rydbergii var. oreocharis A. Simontacchi 1940-6-3 792 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UCD39133  Penstemon rydbergii var. oreocharis Beecher Crampton 1964-6-26 7081 Lassen 32 miles n.w. Susanville east end of Harvey Valley. 1694 Comment
  CHSC12482  Penstemon speciosus Carol Weld 1969-6-20 14 Lassen Road to Dean's Meadow from Five Corners. 1889 Comment
  CHSC5916  Penstemon speciosus J. B. Kimsey 1946-6-10 Lassen Eagle Lake. 1554 Comment
  POM195125  Penstemon speciosus D. D. Keck 1930-7-23 950 Lassen Susanville. 1280 Comment
  UC423512  Penstemon speciosus David D. Keck 1930-7-23 947 Lassen Reno Junction Sierra Nevada, Reno Junction (southeastern Lassen County) 1493 Comment
  UCR183192  Penstemon speciosus Jim Andre, G. L. Clifton 1993-5-28 7713 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  NY660833  Penstemon speciosus F. W. Pennell 1940-6-10 25786 Lassen Route 36, 3 miles northwest of Westwood 1645.9 Comment
  RSA305777  Penstemon speciosus James R. Shevock 1972-5-20 1815 Lassen Near Ravendale, Hwy 395. 1220 Comment
  SEINET5329894 Image available Penstemon speciosus F. B. Headley 1915-5-28 3 Lassen Honey Lake Comment
  UC1012214  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi n of junction with Route #24 (ne of Plumas); ne of Plumas 1524 Comment
  CAS-BOT-BC243409  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville 1280 Comment
  CHSC23482  Penstemon sudans Wayne O. Baum 1971-7-9 71 -86 Lassen E slope of Gallatin Peak. 2072 Comment
  CHSC66408  Penstemon sudans Vernon H. Oswald 1996-6-17 7781 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  NY661797  Penstemon sudans G. W. Gillett 1953-7-13 274 Lassen Fredonyer Pass, Highway 36. One mile east of pass. 1706.9 Comment
  UC169110  Penstemon sudans Marcus E. Jones 1897-6-24 Lassen 10-15 mi w Amedee; ; W from Amedee 1219 Comment
  UC423673  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  RSA0029641  Penstemon sudans Anthony Baniaga, R. Bomberger 2011-7-28 478 Lassen Lassen National Forest. Highway 36, ca. 1/4 mile E of 'Fredonyer Pass Winter OHV Parking Lot.' 1950 Comment
  SEINET5323637 Image available Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen In rimrock NE of Shaffer Mtn 1356 Comment
  JEPS83459  Penstemon venustus Vernon Oswald 1986-7-22 2219 Lassen 1 mi ne of Fredonyer Pass (Highway 36); Highway 36 1706 Comment
  SEINET258696  Penstemon venustus K. A. Vincent 1987-6-25 4436 Lassen SE side Fredonyer Butte rdbank along N side CA 36 ca 11 mi WSW of Susanville E of Fredonyer Pass 1585 Comment
  HSC100163  Peraphyllum ramosissimum J. P. Smith, & J. O. Sawyer 2011-8-14 13378 Lassen Along service road to transmitter facility, 3.2 mi. W of Hwy. 395. Comment
  NY850110  Peraphyllum ramosissimum G. Schoolcraft 1984-6-11 1207 Lassen Hills east of Bull Flat 1585 Comment
  RSA594173  Peraphyllum ramosissimum S. O. Mattoon 1974-6-2 42 Lassen Cottonwood Mountains: Vicinity of Dodge Res.; Lassen County Road 502. 1829 Comment
  CHSC7747  Perideridia bolanderi Beverly J. Wise 1969-5-18 114 Lassen 15.9 mi. East of Susanville on Las. Co. Rd. 216 of Las. Co. Rd. 215. 1554 Comment
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  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
  NY1102238  Perideridia bolanderi subsp. bolanderi W. W. Eggleston 1911-5-29 6704 Lassen Vicinity of Doyle Station Comment
  UCD127832  Perideridia bolanderi subsp. bolanderi R. C. Bechtel 1954-7-12 s.n. Lassen Norvell. Comment
  JEPS123495  Perideridia gairdneri subsp. gairdneri M. Dolan, W. Collison, J. Merced 2015-7-9 CA 320 -141 Lassen From Highway 139, follow signs for Hayden Hill (about 8.5 mi from 139 - Grasshopper Road, intersect goring north) Right 1st fork, left 2nd fork, right 3rd fork, then left toward Silva Flat (1/4 mi after last fork) Comment
  UC1143014  Perideridia oregana August L. Hormay 1934-7-2 Lassen Headquarters Lassen National Forest (1/2 mi n of Black's Mtn.) 1706 Comment
  CAS-BOT-BC423340  Peritoma platycarpa Peter H. Raven 1962-5-28 17874 Lassen 7.7 miles north of Litchfield. Comment
  CHSC6232  Persicaria 1945-7-1 Lassen Eagle Lake. 1554 Comment
  CAS-BOT-BC7522  Phacelia adenophora Elmer Ivan Applegate 1897-6-3 895 Lassen Madeline Plains Comment
  CHSC64878  Phacelia adenophora Vernon H. Oswald; Lowell Ahart 1995-6-19 6884 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. 1371 Comment
  CHSC704  Phacelia adenophora A. Santos 1946-6-20 Lassen Grasshopper Valley. 1615 Comment
  NY1052542  Phacelia bicolor W. W. Eggleston 1911-5-29 6742 Lassen Vicinity of Doyle Station 1290 Comment
  RSA0009544  Phacelia bicolor Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  JEPS87427  Phacelia glandulifera Vernon H. Oswald and Lowell Ahart 1993-6-14 5541 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), n side of rd); Eagle Lake 1566 Comment
  CHSC64789  Phacelia gymnoclada Vernon H. Oswald 1995-5-24 6783 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. 1219 Comment
  CDA40427  Phacelia hastata subsp. compacta L. Ahart, J. Dittes 2005-6-2 11950 Lassen Along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, Long Valley, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction. Comment
  CHSC93554  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
  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
  POM195121  Phacelia heterophylla subsp. virgata D. D. Keck 1930-7-23 956 Lassen Fifteen miles west of Susanville. 1524 Comment
  CHSC26178  Phacelia humilis J. P. Kroessig 1977-5-25 35 Lassen At Eagle Lake Biological Station, ca. 37 km nnw of susanville. 1570 Comment
  UC1069416  Phacelia humilis A. Simontacchi 1940-5-17 751 Lassen 1.1 mi ssw Dixie Spring; Lassen National Forest, Halls Flat Quadrangle 1699 Comment
  UC1537529  Phacelia humilis Gordon H. True Jr. 1936-6-27 565 Lassen n slope Hot Springs Mountain 1676 Comment
  POM73342  Phacelia humilis var. humilis C. C. Bruce 1898-06 2191 Lassen Susanville, Antelope Hill. Comment
  CAS-BOT-BC145034  Phacelia inundata John Thomas Howell 1934-7-8 12510 Lassen Spaldings resort, Eagle Lake Comment
  RSA712931  Phacelia linearis L. P. Janeway 2005-7-4 8463 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC699732  Phacelia linearis Farris Farris 1936-6-5 Lassen Susanville 1371 Comment
  SD58172  Phacelia mutabilis Frances Payne 1929-7-12 85 Lassen NE Warner Mts., Ridge above Lost Lake 2438 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
  SEINET3091893 Image available Phacelia tetramera Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  NY1057981  Phacelia thermalis N. H. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  CAS-BOT-BC265823  Phalaris arundinacea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49500 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  HSC93434  Phalaris arundinacea Vernon H. Oswald, L. Ahart 1996-8-1 8108 Lassen Mtn. Meadows Reservoir SW of Westwood 1540 Comment
  CAS-BOT-BC253549  Phleum alpinum G. Schoolcraft 1997-8-6 2668 Lassen Diamond Mtn. 2316 Comment
  UC1191212  Phlox diffusa Lloyd Swift 1928-5-23 Lassen Bassi Hell Hole Lassen National Forest Comment
  JEPS91153  Phlox douglasii subsp. rigida Dean W. Taylor 1974-6-14 3715 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC972192  Phlox gracilis Milo S. Baker 1952-5-23 12414 Lassen e of Chester (Hwy 36) Comment
  CHSC23546  Phlox hoodii subsp. canescens Wayne O. Baum 1971-6-28 71 -35 Lassen S. slope of Gallatin Peak. 2042 Comment
  UC579783  Phlox longifolia subsp. compacta David D. Keck and J. Clausen 1935-6-24 3744 Lassen 2 mi s Ravendale Comment
  CHSC4772  Phlox speciosa R. Carter 1967-6-27 563 Lassen Ca. 5 yds. off N side of Rd. 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
  RSA59557  Phlox speciosa subsp. occidentalis E. K. Balls 1950-5-22 14826 Lassen 10.8 miles SE of Susanville, 1.1 miles SE of Buntingville, W of Honey Lake 1280 Comment
  CHSC59785  Phlox stansburyi Mary Meyer 1980-5-21 Lassen Long Canyon, south of reservoir. 1645 Comment
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC932052  Phlox stansburyi Verne Grant and Alva Grant 1947-5-5 7979 Lassen n of Honey Lake Valley Comment
  UC585228  Phoenicaulis cheiranthoides E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1758 Lassen nw side of summit e of Red Rock 1828 Comment
  UC465863  Phoradendron densum Milo S. Baker 1900-7-6 Lassen s. side Dixey Mts. Comment
  CAS-BOT-BC250985  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia Comment
  UCD89832  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395. Southeast of Constantia. 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
  UC74048  Picrothamnus desertorum J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  SDSU1535  Pinus contorta subsp. murrayana K. Dixon 1942-8-11 194 Lassen Near Susanville. 1372 Comment
  SEINET3873297  Pinus flexilis Stanley L. Welsh, N. Duane Atwood 2001-6-13 28124 Lassen Ca 2 mi n of jct of Hwy 395 and Hwy 70, e of Beckwourth Pass.; 0 1575 Comment
  SEINET12521273  Pinus ponderosa var. ponderosa J. Mapes s.n. Lassen Susanville Peak Area. NW corner of Township Comment
  UC1951062  Plagiobothrys Debra Valov 2007-5-22 2007086 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CAS-BOT-BC227995  Plagiobothrys David D. Keck; J. Clausen 1935-6-24 3731 Lassen 10 miles S of Likely (Modoc County) 1464 Comment
  CHSC84879  Plagiobothrys cognatus Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 355 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  CHSC112443  Plagiobothrys cusickii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18772 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
  CHSC113070  Plagiobothrys cusickii Lowell Ahart; John Dittes 2013-7-22 18870 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
  JEPS107314  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-1 11906 Lassen Depression on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS114769  Plagiobothrys cusickii Lowell Ahart, John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA0039528  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2012-7-9 18284 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
  CAS-BOT-BC224973  Plagiobothrys hispidulus John Thomas Howell 1934-7-10 12549 Lassen Long's [Longs] Well Comment
  CHSC66237  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7861 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the interface between meadow and forest on the W side of the meadow ca. 0.4 mi S of the cabins. 1633 Comment
  JEPS120894  Plagiobothrys hispidulus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18776 Lassen About 30 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1137695  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Lassen National Forest 1743 Comment
  UC1609215  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1993-6-14 5510 Lassen ca 3 mi (air) w. Eagle Lake (junction of Lassen A1 (Eagle Creek Rd.) with Lassen A21 (32N02)) 1813 Comment
  JEPS87508  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  RSA495517  Plagiobothrys mollis Elaine Joyal, D. Mehlman 1988-6-27 1286 Lassen Poison Lake. 2000 Comment
  RSA0105581  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC91317  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
  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
  JEPS103179  Plantago lanceolata G. Schoolcraft 2000-6-5 2897 Lassen Hwy 395 and Johnstonville Road near Susanville Airport 1310 Comment
  HSC16618  Platanthera dilatata var. leucostachys Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  JEPS64411  Platanthera leucostachys Brown and Wieslander 1922-7-17 21 Lassen Martin Sprs. Eagle Lake Comment
  UC726205  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen 2 mi e Westwood 1524 Comment
  RSA433737  Plectritis macrocera Christopher Davidson 1975-6-7 2754 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC100821  Plectritis macrocera unknown 1890-1 Lassen Milford Comment
  CAS-BOT-BC326718  Pleiacanthus spinosus John Thomas Howell 1974-7-8 50493 Lassen Between Camp Connell and Camp Menzies, Sierra Nevada 1295 Comment
  UC1136987  Poa X fibrata George A. Fischer and Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat; Lassen Nat'l Forest 1737 Comment
  UCD57075  Poa bulbosa Beecher Crampton 1964-6-26 7078 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC589933  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (bank of Ash Creek) Comment
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Jun 24 2009
  UCD90889  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen northeastern part of county. Long Valley, 6 miles southeast of Jess Valley, southern Warner Mountains. 2133 Comment
  UC1024837  Poa cusickii subsp. cusickii Leo Whitney 1935-6-10 3219 Lassen Camp 10 Fruit Grower's Supply Company Comment
  UC1533157  Poa cusickii subsp. cusickii G. Schoolcraft 1986-6-25 1644 Lassen 3 mi nw Termo 1615 Comment
  UC1583964  Poa fendleriana subsp. longiligula G. Schoolcraft 1990-5-16 2054 Lassen ca 1 mi w Muck Valley 1280 Comment
  UC2046021  Poa pratensis Barbara L. Wilson with Danna Lytjen and Nick Otting 2005-7-29 11508 Lassen Blue Door Flat, seven or eight miles east of Highway 295 on county road 510. Comment
  UCD91978  Poa pratensis L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  UC1142958  Poa pratensis subsp. pratensis A. L. Hormay 1941-6-25 31 Lassen Westwood Junction; Lassen Nat'l Forest 1737 Comment
  UC60738  Poa pratensis subsp. pratensis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  JEPS126499  Poa secunda Jennifer Mueller, A. Brambila July 6-15, 2016 CA 370 -228 Lassen Head south through Eagleville, CA to Bare Ranch. Comment
  JEPS85786  Poa secunda Roy E. Buck and Robert A. Price 1988-6-26 1027 Lassen ca 30 air km nne Susanville (Fredonyer Peak, on subsidiary peak ca 0.5 air km n of main summit) 2377 Comment
  POM267993  Poa secunda D. D. Keck 1944-7-8 5456 Lassen 5 miles east of Westwood, on road to Fredonyer Pass. 1585 Comment
  RSA101643  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  SD34480  Poa secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester, mountain meadow 1524 Comment
  CHSC115514  Poa secunda subsp. juncifolia Lowell Ahart; John Dittes 2015-7-14 20331 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UC1037128  Poa secunda subsp. juncifolia Leo Whitney 1935-6-19 3259 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC589943  Poa secunda subsp. juncifolia Leo Whitney 1936-5-26 3157 Lassen 10 mi e Adin (near Ash Creek) Comment
  UC718010  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada 1341 Comment
  UC718011  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5447 Lassen 2 mi w Westwood (meadow leading to Mountain Meadows Reservoir); Sierra Nevada 1524 Comment
  UCD92427  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 s.n. Lassen Near Fruit Grower's Supply Co., Camp 10. Comment
  UCD92432  Poa secunda subsp. juncifolia L. Whitney 1935-6-23 3289 Lassen Lassen National Forest. Near Fruit Grower's Supply Co., Camp 10. Comment
  CAS-BOT-BC236178  Poa secunda subsp. secunda Doris Kildale Gillespie 1930-5-13 9362 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC236182  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49188 Lassen Elysian Valley NW of Janesville 1325 Comment
  JEPS107471  Poa secunda subsp. secunda Lowell Ahart, John Dittes 2005-6-1 11845 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
  UC1132877  Poa secunda subsp. secunda K. E. Bradshaw 1939-5-27 236 Lassen Black Mt Experimental Forest, center of Plot 39-1 Black Mt Experimental Forest; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1567404  Poa secunda subsp. secunda G. Schoolcraft 1989-7-18 1975 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  CHSC67263  Polemonium micranthum James D. Jokerst 1991-5-29 3312 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of drainage. 1584 Comment
  CHSC96705  Polemonium occidentale Gordon Leppig 1998-7-12 949 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  POM74373  Polemonium occidentale Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  NY182309  Polyctenium fremontii A. Tiehm 1984-6-25 8825 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81. 1828.8 Comment
  CAS-BOT-BC74170  Polyctenium fremontii Arnold Tiehm; Margaret Williams; Jan Nachlinger 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, along the highway. 1347 Comment
  CAS-BOT-BC167849  Polygala subspinosa Junea Kelly 1937-6-1 s.n. Lassen South of Secret Valley on road from Susanville to Alturas Comment
  CHSC64797  Polygala subspinosa Vernon H. Oswald 1995-5-31 6815 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CAS-BOT-BC419769  Polygonum argyrocoleon G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC. Comment
  CAS-BOT-BC413910  Polygonum aviculare James Jokerst 1983-7-24 1877 Lassen Near Madeline Plains 1614 Comment
  SEINET10479337  Polygonum aviculare Mary Susan Taylor 1982-8-19 Taylor 5021 Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  POM104627  Polygonum bistortoides Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1536794  Polygonum bistortoides Gordon H. True Jr. 1939-6-15 1036 Lassen w Grasshopper Valley; Bullard Lake Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC773925  Polygonum douglasii subsp. douglasii L. R. Short and J. Warren July, 1936 S- 420 Lassen Burgess Spring Experiment Range 1856 Comment
  CHSC25902  Polygonum douglasii subsp. spergulariiforme K. R. Stern 1967-7-1 2467 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC84438  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  JEPS117589  Polygonum douglasii subsp. spergulariiforme 2010-7-31 16979 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1521 Comment
  RSA768026  Polygonum douglasii subsp. spergulariiforme L. Ahart, John Dittes 2010-7-31 16979 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  UC1553395  Polygonum douglasii subsp. spergulariiforme G. Schoolcraft 1988-6-15 1814 Lassen 16 mi e Adin; Ash Valley RNA/AEC 1584 Comment
  UC1924203  Polygonum lapathifolium Debra Valov 2005-8-20 2005221 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  HSC31370  Polygonum minimum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19243 Lassen About 3 mi. N of Westwood Comment
  SD7880  Polygonum minimum Mrs. R. M. Austin none given Lassen Lassen Co. Comment
  POM104446  Polygonum persicaria Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC117228  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2018-7-15 21235 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieger. 1397 Comment
  CHSC58506  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 1992-7-3 5049 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1 mi N of Cameron Meadow. 1950 Comment
  CHSC60844  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1719 Comment
  JEPS114745  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  JEPS121265  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2013-7-23 18905 Lassen On the NW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1192317  Polygonum polygaloides subsp. confertiflorum Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 757 Lassen marsh on Great Northern Railroad Nubeiber (Hwy 299) Comment
  UC1258493  Polygonum polygaloides subsp. confertiflorum G. Schoolcraft 1980-7-16 313 B Lassen Nelson Corral Reservoir area; Bureau of Land Management 1804 Comment
  CHSC60385  Polygonum polygaloides subsp. kelloggii Mary Ann Showers 1992-6-12 2529 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  UC506934  Polygonum sawatchense subsp. oblivium George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 Comment
  JEPS88215  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1996-6-24 7864 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd.(A1), on w. side of the meadow ca. 0.4 mi. s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  JEPS88211  Polypogon monspeliensis Vernon H. Oswald and Lowell Ahart 1996-6-17 7791 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, trailside just s.e. of Hwy 36 bridge spanning the Susan R.); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  CHSC13799  Populus tremuloides Cathy Crittenden 1970-7-9 41 Lassen Antelope lookout. 2316 Comment
  JEPS108444  Porterella carnosula Lisa Schultheis 1995-6-27 229 -95 Lassen W side of Rt. 395, 3.5 mi S of Madeline. Comment
  SEINET10460826  Porterella carnosula Gary Schoolcraft 1980-7-16 Schoolcraft 318 Lassen T38N R12ESE 1/4 Sec 23 Comment
  SEINET10460828  Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 Holmgren 9463 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi.) south of Madeline. T36N R13ES9 1620 Comment
  CHSC7716  Portulaca oleracea Beverley J. Wise 1969-6-3 6 Lassen Susanville, 833 Mark St. 1310 Comment
  CHSC4838  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UCD138215  Potamogeton amplifolius Verne Grant; Irving Schneider Date Unknown 8269 Lassen northern part of county. Northwest shore of Blue Lake. 1981 Comment
  CHSC117537  Potamogeton diversifolius Lowell Ahart; John Dittes 2017-7-13 21149 Lassen Southwest part of pond, 150 yares east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCR196279  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  UC1100074  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8244 Lassen e end of Tule Lake Comment
  UC1100076  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-31 8201 Lassen sw of Madeline (George Williams' Ranch); Madeline Plan Comment
  UC1099900  Potamogeton pusillus var. pusillus Verne Grant, Irving Schneider 1947-7-31 8212 Lassen Madeline Plain, ne quarter of George Williams section 19 Madeline Plain Comment
  CHSC55814  Potamogeton richardsonii Vernon H. Oswald 1991-9-23 4876 Lassen Lassen Volcanic National Park. Butte Lake in the northeast corner of the park. At the first spit of land extending into the lake south of its outlet. 1841 Comment
  JEPS28699  Potamogeton richardsonii George W. Gillett 1957-7-26 919 Lassen on e side of Butte Lake (near island, near shore); Lassen Volcanic National Park 1844 Comment
  CAS-BOT-BC143402  Potentilla John Thomas Howell 1976-7-19 51960 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  JEPS88679  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen along Ash Creek at the crossing of Ash Valley Road (Lassen County Road 527, Forest Road 39N08) Modoc Plateau, along Ash Creek, Ash Valley (Ash Valley) 1554 Comment
  CHSC68764  Potentilla biennis Vernon H. Oswald; Lowell Ahart 1997-5-27 8487 Lassen East side of Hwy. 139 at a small pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  NY831702  Potentilla biennis V. E. Grant 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  UC12514  Potentilla breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  POM34025  Potentilla glandulosa subsp. ashlandica Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC5044  Potentilla glandulosa subsp. nevadensis L. B. Barlow 1967-7-4 87 Lassen 5 mi s of Eagle Lake Biological Station on Gallatin Beach Road. 1737 Comment
  SEINET6637685  Potentilla gracilis var. fastigiata C. G. Gulling 1905-1 1529 Lassen Big Meadows 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
  JEPS121267  Potentilla gracilis var. flabelliformis Lowell Ahart, John Dittes 2013-7-23 18899 Lassen Along a small drainage, W of the road levee, about 100 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC158475  Potentilla gracilis var. gracilis John Thomas Howell 1976-7-19 51948 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CAS-BOT-BC158476  Potentilla gracilis var. gracilis A. M. Vollmer; L. Beane 1953-7-1 81 Lassen Along Halls Flat road beginning 6 miles west of Susanville to McArthur 1554 Comment
  SJSU5833  Potentilla millefolia J. W. Tilden 1960-6-27 1512 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  UC1553398  Potentilla millefolia G. Schoolcraft 1988-5-17 1800 Lassen s end of Eagle Lake near amphitheatre; s end of Eagle Lake near amphitheatre 1554 Comment
  CAS-BOT-BC144842  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CHSC66401  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1996-6-17 7787 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  CHSC30595  Prunella vulgaris Marc Held 1972-7-11 40 Lassen Collected approx. 1 mile north of Gallatin house. Comment
  CAS-BOT-BC159779  Prunus andersonii James Moffitt 1934-6-27 147 Lassen Near Milford Comment
  CHSC1581  Prunus andersonii D. Heinz 1962-4-23 Lassen Hallelujah Jct. at State line. 1371 Comment
  SJSU8180  Prunus andersonii M. D. Fleschner 1965-7-12 Lassen 2 mi SE of Milford near Honey L 1249 Comment
  CHSC6259  Prunus virginiana var. demissa R. Gein 1946-6-11 Lassen Eagle Lake. On Pine Creek. 1580 Comment
  UC1128444  Prunus virginiana var. demissa G. T. Nordstrom 1936-7-8 902 Lassen 2 mi se of Dog Valley (Tahoe National Forest); Tahoe National Forest 1798 Comment
  CHSC61950  Pseudognaphalium thermale Brian Murray 1992-5-31 3 Lassen 1/2 mile East of four corners on Willow Creek Rd. On the side of the road. Comment
  CAS-BOT-BC239799  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51998 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD149778  Pseudoroegneria spicata Harry George; William Anderson 1964-6-2 s.n. Lassen Secret Creek. Comment
  UC60834  Pseudoroegneria spicata subsp. spicata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Amedee; Honey Lake Valley, Amedee Comment
  CAS-BOT-BC80092  Pseudotsuga menziesii John Thomas Howell 1976-7-19 51965 Lassen on Gold Run Creek southwest of Susanville 1386 Comment
  CHSC29852  Psilocarphus brevissimus var. brevissimus Robin L. Ondricek 1978-6-8 48 Lassen Lower Dry Lake at lake's edge. 1645 Comment
  UC35755  Psilocarphus brevissimus var. brevissimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3381 Lassen Honey Lake Valley Comment
  CAS-BOT-BC361754  Psilocarphus brevissimus var. brevissimus H. D. Ripley; R. C. Barneby 1944-5-30 5961 Lassen North of Viewland 1371 Comment
  JEPS96091  Psilocarphus oregonus Vernon H. Oswald and Lowell Ahart 1996-6-17 7794 Lassen Devils Corral Trailhead Modoc Plateau (shallow ditch just sw of parking area, located off Hwy 36 ca. 7 mi w, trailhead is access to Bizz Johnson Trail) 1420 Comment
  UC124154  Psoralidium lanceolatum unknown 1892-6-23 Lassen Honey Lake Comment
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May 13 2011
  CAS-BOT-BC72539  Pteridium aquilinum John Thomas Howell; Gordon H. True 1973-7-31 50058 Lassen on road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UCD136178  Pteridium aquilinum var. pubescens John Thomas Howell; Gordon H. True 1973-5-12 49175 Lassen Sierra Nevada, Elysian Valley northwest of Janesville. 1325 Comment
  HSC68918  Pterospora andromedea Gary Schoolcraft 1980-7-28 339 Lassen N of Clark's Valley 2073 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
  JEPS103194  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  JEPS120925  Puccinellia lemmonii Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen In a depression on the S side of the road, on the S side of the McArthur Diversion Canal, 0.32 miles E of the Tule River, 2.8 air miles NW of McArthur, Fall River Valley, McArthur Swamp. Comment
  CDA32666  Puccinellia lemmonii Gary Schoolcraft 2000-6-19 2906 Lassen Flat southeast of Ravendale BLM Fire Station. 0 Comment
  UCR244041  Puccinellia nuttalliana Jim Andre 1993-6-1 19711 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CHSC7722  Purshia tridentata Beverley J. Wise 1969-5-4 94 Lassen 3.0 mi west on Shaeffer Mtn Lookout rd off Hwy 395, 27.4 mi. east of Susanville. 2042 Comment
  SEINET10542465  Purshia tridentata Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2592 Lassen Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville. Assoc.; Purshia-artemesia 1311 Comment
  SEINET10542488  Purshia tridentata Jeffrey Huber 1971-6-11 Huber 338 Lassen 6 miles w of susanville, on calif. Hwy 36, volcanic soil, pinus ponderosa Forest 1615 Comment
  CAS-BOT-BC147820  Purshia tridentata var. tridentata R. F. Thorne; C. W. Tilforth 1969-9-6 39253 Lassen C. 14 miles SE of Milford along Long Valley Creek 1310 Comment
  JEPS117495  Purshia tridentata var. tridentata Lowell Ahart, John Dittes 2010-7-31 17015 Lassen 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
  JEPS28802  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen ca 50 yds from Widow Lake (near outlet, near trail); Lassen Volcanic National Park 2057 Comment
  JEPS44640  Purshia tridentata var. tridentata Frank W. Peirson 1932-7-20 10355 Lassen 20 mi se Susanville Comment
  UC1128540  Purshia tridentata var. tridentata C. W. Hanks 1934-9-26 91 Lassen w side Long Valley (near Plumas National Forest); Sierraville Quad. 1432 Comment
  CHSC6238  Pyrola dentata P. Balch 1955-7-26 Lassen Roadside pine forest between Eagle Lake and Pittville road. 1676 Comment
  RSA0084317  Pyrola picta Diana D. Jolles, Mary M. Jolles 2011-8-7 479 Lassen Lassen National Forest, within a couple miles north of Susan River on Route 44. 1684 Comment
  UC1523749  Pyrola picta Gary Schoolcraft 1981-7-7 497 Lassen n of Landon Lookout 1981 Comment
  UC477495  Pyrola picta A. G. Brenneis 1928-7-3 11 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  CAS-BOT-BC362265  Pyrrocoma carthamoides var. cusickii John Thomas Howell 1934-7-6 12453 Lassen Harvey Valley Comment
  CAS-BOT-BC362266  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  UCR163275  Pyrrocoma hirta Jim Andre 1993-6-29 1408 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  UC773928  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  POM39970  Pyrrocoma lanceolata Marcus E. Jones 1897-6-30 s.n. Lassen Ranch below Eagle Lake. Susanville, 4 miles. 1524 Comment
  CDA18269  Pyrrocoma racemosa var. paniculata G. D. Barbe 1974-8-2 1934 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UC1192231  Pyrrocoma racemosa var. paniculata Verne Grant and Irving Schneider 1947-9-6 8392 Lassen near Wendel (w of Fleming Rach Headquarters) Comment
  UCD46065  Quercus garryana var. garryana James Griffin 1964-8-4 1272 Lassen Along County road from Little Valley to Dixie Valley, Lassen County, California. 1341 Comment
  CHSC5250  Quercus kelloggii P. Balch 1955-7-25 Lassen Eagle Lake. Roop Mt. Rd., 5 mi from Susanville. 1828 Comment
  UCD46640  Quercus kelloggii Annie M. Alexander; Louise Kellogg 1946-8-14 5158 Lassen On hill back of town. Susanville. Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  CHSC25909  Ranunculus K. R. Stern 1967-6-25 2434 Lassen Meadow on road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  CHSC60765  Ranunculus alismifolius var. davisii Vernon H. Oswald; Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  SD8208  Ranunculus aquatilis Mrs. R. M. Austin 1882-8-7 Lassen Hot Spring Valley Comment
  CHSC6245  Ranunculus aquatilis var. capillaceus R. Gein 1946-6-17 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  SEINET10536066  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1974-1 Taylor 282 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  NY493018  Ranunculus aquatilis var. diffusus P. H. Raven 1958-6-19 13256 Lassen In a pond along United States Highway 395, 7.1 miles west of Standish Comment
  UC1745660  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  UC9428  Ranunculus cymbalaria var. saximontanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3332 Lassen Honey Lake Valley 1219 Comment
  CHSC60612  Ranunculus flammula var. ovalis Mary Ann Showers 1992-6-13 2549 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  HSC63726  Ranunculus glaberrimus Teresa Prendusi 1980-4-23 Lassen Shaffer Mtn., E slope 1311 Comment
  CHSC14062  Ranunculus glaberrimus var. ellipticus Tim Manolis 1974-2-16 16 Lassen 2 1/4 mi e of Eagle Lake Field Station. Comment
  CHSC25560  Ranunculus glaberrimus var. ellipticus Robert A. Schlising 1977-4-2 3185 Lassen Along dirt road, east of Eagle Lake Field Station. 1584 Comment
  UC1776660  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-4-2 2464 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  UC1776661  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-3-1 2463 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  CHSC108026  Ranunculus occidentalis var. occidentalis Lowell Ahart; John Dittes 2011-6-20 17479 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  UCD97133  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen Susanville, county fairgrounds. Comment
  CAS-BOT-BC362887  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01 Comment
  UC1523733  Rhamnus rubra Gary Schoolcraft 1981-7-21 544 Lassen ne of Pittville (along Hwy 299) 1249 Comment
  CAS-BOT-BC58195  Rhododendron columbianum Ben Howard; C. R. Quick 1949-9-14 49 -48 Lassen Jennie Spring, Jennie Mt., N. of Westwood, Lassen National Forest. Comment
  CAS-BOT-BC169007  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  HSC95270  Ribes inerme var. inerme Gordon Leppig 1998-7-12 947 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS49414  Ribes inerme var. inerme Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  SEINET5339729  Ribes nevadense C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  RSA0024767  Ribes roezlii James Henrickson 1969-9-4 4267 Lassen 4 miles S of Westwood along Highway 147. 1390 Comment
  CHSC80652  Ribes velutinum V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10033 Lassen Northeast of Doyle in the Fort Sage Mtns, trailhead to top of mountain from the end of a 4WD road. 1798 Comment
  UC1567416  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen lower ne slope Shaffer Mtn. 1432 Comment
  OBI48617  Rigiopappus leptocladus Lewis S. Rose 1940-6-11 40507 Lassen 8 mi W of Nubieber 1219 Comment
  JEPS121254  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-7-22 18855 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1191531  Rorippa sinuata Verne Grant and Irving Schneider 1947-8-1 8226 Lassen irrigation ditch running s.w. into State Fish & Game nesting area on s.w. end of Section 19 Madeline Plain Comment
  UCD115377  Rorippa sinuata Verne Grant; Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting aera on west end of Section 19 on Madeline Plain. Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  CHSC66400  Rosa woodsii subsp. ultramontana Vernon H. Oswald; Lowell Ahart 1996-6-17 7773 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  JEPS106500  Rosa woodsii subsp. ultramontana L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest 1790 Comment
  UC1128616  Rosa woodsii var. ultramontana A. Simontacchi 1940-7-3 920 Lassen 3.5 mi WSW of Harvey Mountain Lookout 1828 Comment
  UC773922  Rosa woodsii var. ultramontana L. R. Short and Wm. Gansberg 1936-7-9 S- 484 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  POM90170  Rosa woodsii var. ultramontana Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CAS-BOT-BC148359  Rubus leucodermis Hans Leschke 1964-9-3 1893 Lassen Butte Lake, near Cold Spring on trail to Cinder Cone - Lassen Volcanic National Park Comment
  POM91623  Rubus parviflorus var. bifarius Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  SEINET10479396  Rumex acetosella Paul Gallian, David B. Dunn 1971-6-2 Gallian 482 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus-Jeffrey Pine on mountain range to W at approximately the same altitude. 1250 Comment
  CHSC7737  Rumex crispus Beverley J. Wise 1969-5-23 80 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CHSC76101  Rumex fueginus Lowell Ahart; Vernon H. Oswald 1999-9-13 8214 Lassen On the edge of a flooded canal, just southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC6963  Rumex maritimus M. S. Baker and Frank Nutting 1894-7-25 Lassen Willow Creek Comment
  UC1542940  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA Ash Valley 1554 Comment
  UC1136137  Rumex salicifolius var. lacustris E. Sawyer 1935-6-27 228 Lassen Long Valley Sierraville Quad. 1310 Comment
  SEINET4176403  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  SD257945  Sagina saginoides D. F. Howe 1964-7-31 3900 Lassen Parsnip Creek, Warner Mts., Modoc National Forest. 1829 Comment
  CAS-BOT-BC445672  Sagittaria cuneata Jean L. Pawek 1964-8-16 604 Lassen Lake Almanor near Chester 1371 Comment
  POM362636  Salix bonplandiana Christopher Davidson 1975-6-6 2725 Lassen Ca 3.5 miles on road to Thompson Peak. Branching E of rd 204 ca 7.5 miles SW of Susanville. (Rd 204 follows Gold Run Cr.) 1677 Comment
  CHSC58514  Salix boothii Vernon H. Oswald 1992-7-3 5048 Lassen Trail from Juniper L. to Snag L., on the W edge of Cameron Meadow. 1950 Comment
  JEPS107443  Salix exigua Lowell Ahart, John Dittes 2005-6-1 11905 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
  JEPS88245  Salix exigua Vernon H. Oswald and Lowell Ahart 1996-6-17 7784 Lassen n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (ditch along trail, trail accessed at Devils Corral Trailhead off of hwy, w of Susanville); Modoc Plateau 1432 Comment
  RSA0035819  Salix exigua Lowell A. Ahart, John Dittes 2008-6-22 15043 Lassen In Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. 1257 Comment
  UC481924  Salix exigua var. hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen at edge of Pit River McArthur 960 Comment
  CAS-BOT-BC107961  Salix geyeriana John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49220 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  CAS-BOT-BC106963  Salix lasiolepis G. Schoolcraft 1999-5-7 2819 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  SEINET10682438  Salix lasiolepis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 138 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  POM209558  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 686 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  SEINET10417120  Salix lucida subsp. caudata G. Schoolcraft 1995-5-14 2477 Lassen W of Susan Hills subdivision, SW of Susanville. 1372 Comment
  RSA715977  Salix lucida subsp. lasiandra L. Ahart, John Dittes 2005-6-2 11925 Lassen Along a small ditch. Along the road. Near the Anderson Ranch home. Long Valey. About 4.75 miles (air) N of the intersection of Scott Rd and Hwy 70. 6.2 miles (air) NW of Hallelujah Jct. 1460 Comment
  CAS-BOT-BC126176  Salix scouleriana John Thomas Howell 1969-8-7 45885 Lassen Between Butte Lake and Cinder Cone, Lassen Park Comment
  JEPS96090  Salix scouleriana Vernon H. Oswald and Lowell Ahart 1996-6-17 7770 Lassen on n side of Hwy 36 ca 0.2 mi e & mile post (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1432 Comment
  UC1135074  Salix scouleriana C. W. Hanks 1934-9-27 95 Lassen w. side Long Valley (near Plumas Nat'l Forest); Sierraville Quad. Comment
  RSA339985  Salvia aethiopis Noel Holmgren, Patricia K. Holmgren 1980-7-3 9459 Lassen US Highway 395, 7.9 km (4.9 mi) south of Likely 1550 Comment
  UCD125446  Salvia aethiopis Collector Unknown 1950-1 s.n. Lassen Susanville. Comment
  CAS-BOT-BC214313  Salvia dorrii var. pilosa Ella Dales Cantelow 1941-5-22 3656 Lassen 2 1/2 mi. n. of Secret Valley C.C.C. Camp, Hy. 395, Quincy to Alturas Comment
  SEINET8018246  Salvia dorrii var. pilosa J. A. Young 1982-6-7 s.n. Lassen NE Lassen County, Redlands. 1676 Comment
  CHSC12422  Sambucus mexicana Anne Linda Brisk 1969-6-26 28 Lassen 7.2 mi SW of ELBS on Road 4.25. 1584 Comment
  CHSC26166  Sambucus mexicana Detzer; M. Sacks 1977-7-15 5 Lassen Ca. 3.5 mi SE of Milford, 1 mi SE of Laufman Rngr. Stn. on unimproved USFS road. 1420 Comment
  CAS-BOT-BC238591  Sambucus nigra subsp. caerulea G. Schoolcraft 1997-8-6 2674 Lassen Diamond Mtn. 2316 Comment
  UC1924239  Sanguisorba annua Debra Valov 2004-6-8 2004245 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  SEINET10579543  Sanicula tuberosa Katherine L. Morris, David B. Dunn; Melvin L. Conrad 1973-5-25 Morris 242 Lassen Collected 7.6 mi. NW of Jct. of Hwy 36 & 44 on Hwy 44. Comment
  CHSC30628  Sarcobatus vermiculatus T. M. Lane 1975-7-7 35 Lassen SE of Horse Lake Rd, on se shore of Horse Lake; 19 km nne of Susanville. 1508 Comment
  JEPS47551  Saxifraga oregana Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  UCD65649  Schedonorus arundinaceus John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49474 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CAS-BOT-BC111302  Schoenoplectus acutus var. occidentalis R. F. Thorne; C. W. Tilforth 1969-9-6 39256 Lassen Sandy flats along Long Valley Creek c. 14 mi SE of Milford. Comment
  SEINET10751251  Scirpus acutus var. occidentalis Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 842 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10. T31N R7E S35 NW 1/4. 1980 Comment
  UC1100757  Scirpus acutus var. occidentalis Verne Grant and Irving Schneider 1947-9-6 8389 Lassen irrigation ditch w Fleming Ranch headquarters (near Wendel); , w of Fleming Ranch headquarters Comment
  CHSC66415  Scirpus microcarpus Vernon H. Oswald; Lowell Ahart 1996-6-17 7819 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. In a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  JEPS87446  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
  JEPS95894  Scirpus nevadensis Lowell Ahart 1999-9-13 8228 Lassen 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
  CAS-BOT-BC240001  Scribneria bolanderi Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 759 Lassen On Great Northern Railroad, Highway 299, Nubeiber 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
  UCD92528  Scribneria bolanderi Malcolm A. Nobs; S. Galen Smith, Herbert L. Mason 1949-5-29 759 Lassen on Great Northern Railroad, Highway 299, Nubeiber. Comment
  UC767449  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  SDSU11023  Scrophularia lanceolata D. F. Howe 1962-8-2 3923 Lassen Warner Mtns, Modoc National Forest. 1829 Comment
  UC1713590  Scutellaria holmgreniorum G. Schoolcraft 1986-6-18 1630 Lassen s side of Smoke Creek (between Shinn and Smoke Creek ranches) 1493 Comment
  RSA0003996  Scutellaria holmgreniorum Noel Holmgren, Pat Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km. from U.S. Hwy. 395 via Rye Patch Can. Comment
  CAS-BOT-BC214265  Scutellaria nana Clarence R. Quick 1966-7-22 66 -50 Lassen Susanville-Pittville Road, Blacks Mtn. Hdqts., Halls Flat, 9 m. e. of Hat CreekRocky campgd. 1706 Comment
  CAS-BOT-BC214266  Scutellaria nana Clarence R. Quick 1966-7-22 66 -55 Lassen Edge of logging road 19, east of Patterson Flat 1706 Comment
  CAS-BOT-BC214268  Scutellaria nana Richard Olmstead 1984-6-27 584 Lassen Rye Patch Canyon Rd., 13.2 mi E of US 395, turnoff ca 14 mi. S of Ravendale 1548 Comment
  POM80110  Scutellaria nana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA128297  Scutellaria nana Peter H. Raven, Otto T. Solbrig 1958-6-17 13270 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  UC100824  Scutellaria nana Milo S. Baker 1894-7-13 Lassen Pine Creek Comment
  UC1137775  Scutellaria nana August L. Hormay 1934-7-2 Lassen 1/4 mi nw of Black's Mountain; Lassen National Forest 1706 Comment
  UC1549235  Scutellaria nana Richard Olmstead 1983-7-2 415 Lassen 16 mi s of Ravendale (1 mi s of rest area, near small stream, along US 395); US 395 1444 Comment
  CAS-BOT-BC46020  Sedum lanceolatum Clare B. Hardham 1971-8-22 18425 Lassen Diamond Mountain 2346 Comment
  RSA712935  Senecio aronicoides L. P. Janeway 2005-7-4 8471 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC1137766  Senecio aronicoides August L. Hormay 1934-5-15 Lassen 1.50 mi e Halls Flat; Lassen National Forest 1767 Comment
  RSA516346  Senecio canus Barbara Ertter, Gary Schoolcraft 1987-6-16 7194 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  CDA8612  Senecio eurycephalus T. C. Fuller 1963-7-15 10895 Lassen 1.1 mile west of Little Valley. 0 Comment
  CHSC54176  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. Meadow. 1267 Comment
  CHSC99108  Senecio hydrophilus Lowell Ahart; John Dittes 2008-6-20 14907 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114704  Senecio hydrophilus Lowell Ahart, John Dittes 2008-6-20 14907 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  OBI75864  Senecio hydrophilus Anthony Baniaga 2011-9-8 511 Lassen Lassen Natl Forest. Caribou Wilderness; Long Lake, W shore peninsula. Red Cinder quad T30N R7E sec 16 SW of NW 2103 Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CHSC60723  Senecio integerrimus var. exaltatus Vernon H. Oswald; Lowell Ahart 1993-6-3 5480 Lassen Champs Flat Rd. (Lassen 105, 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake, on the S side of Pine Creek Valley, between Poison Lake and Susanville. Meadow. 1725 Comment
  CHSC64759  Senecio integerrimus var. exaltatus Vernon H. Oswald 1995-6-7 6843 Lassen High Cascade Range. Hwy 36, 5.5 mi e of Westwood. Along the se edge of McKenzie Mdws., on the n side of the road. 1584 Comment
  JEPS94603  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1997-5-27 8508 Lassen on Forest Route 38N04 0.3 mi e Hwy. 139 (n of Susanville (between Hwy 139 near Willow Creek Guard Station and Coyote Flat), between the road and a small creek) 1560 Comment
  CHSC13513  Senecio triangularis J. Pitts 1972-7-22 337 Lassen Found ca. .5 mi past Lassen Park gate. Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  SEINET10788334  Setaria viridis Lowell Ahart 2010-8-31 Ahart 17139 Lassen T39N, R8E, southwest 1/4 section 35. About 1/4 of a plant, on damp good soil, moisture from irrigation, 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. Common. 1277 Comment
  UC585099  Sidalcea glaucescens E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1778 Lassen 4 mi s Ravendale (slope of creek at n end of Secret Valley); n end Secret Valley, s of Ravendale 1371 Comment
  SBBG128040  Sidalcea glaucescens L. Ahart, J. Dittes 2010-7-31 17016 Lassen S side of the rd, ca. 50 yards E of the large culvert, where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1516 Comment
  HSC22981  Sidalcea malviflora John Pratt 1970-7-9 71 Lassen 1677 Comment
  CAS-BOT-BC205780  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  UC1037274  Sidalcea oregana Leo Whitney 1934-7-10 1760 Lassen 14 mi w of Eagle Lake (near Harvey Valley Spring, Lassen National Forest, Harvey Valley); Lassen National Forest, Harvey Valley 1737 Comment
  SEINET11986397  Sidalcea oregana N. E. Heiken 1978-1 86 Lassen Colman Lake, several mi S of Eagle Lake 1963 Comment
  POM84765  Sidalcea oregana subsp. oregana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC579721  Sidalcea oregana subsp. oregana David D. Keck and J. Clausen 1935-6-24 3740 Lassen 2 mi s Ravendale; s of Ravendale 1464 Comment
  POM260336  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  POM260877  Sidalcea oregana subsp. oregana Alice Eastwood, J. T. Howell 1940-6-11 7982 Lassen Big Valley Mountains. 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
  CHSC99148  Sidalcea oregana subsp. spicata Lowell Ahart; John Dittes 2008-6-19 14890 Lassen 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
  RSA31660  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 2 miles E of Westwood. 1524 Comment
  RSA339988  Sidalcea oregana var. maxima Noel Holmgren, Patricia K. Holmgren 1980-7-3 9479 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) airline distance northwest of Termo. 1620 Comment
  JEPS28444  Silene bernardina George W. Gillett 1957-8-28 928 Lassen on trail to Widow Lake above junction with Snag Lake Trail (upper end of butte Lake Lassen Volcanic National Park); Lassen Volcanic National Park, upper end Butte Lake 1859 Comment
  RSA123272  Silene bernardina L. R. Short, D. Gish 1936-7-15 S- 487 Lassen MDM, Burgess Spr. Exp. Range; Forest: Lassen. 1744 Comment
  CAS-BOT-BC384310  Silene bernardina George W. Gillett 1957-7-24 896 Lassen Lassen Volcanic National Park. Flats between Cameron Meadow and Snag Lake 1950 Comment
  UC1137882  Silene lemmonii H. P. Hagge 1929-9-17 36 Lassen Logan Mtn. Eagle Lake Quad., Logan Mtn. 1828 Comment
  CHSC59709  Silene menziesii Mary Meyer 1980-7-28 Lassen 2148 Comment
  UC1137897  Silene nuda E. Sawyer 1935-7-8 274 Lassen 7 3/4 mi ene Loyalton; Sierraville Quad., ene of Loyalton Comment
  UC1618235  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ca 1.5 mi e Diamond Peak (ca 10 airmi due s of Susanville, ridge of Diamond Mts.); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  CAS-BOT-BC389549  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  SEINET8411725  Silene nuda Elmer I. Applegate 1923-9-30 4035 Lassen Constantia, Honey Lake Valley. Comment
  CAS-BOT-BC75079  Sisymbrium altissimum Louella Bass 1973-5-25 46 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC116070  Sisymbrium altissimum Lowell Ahart; John Dittes 2015-7-13 20316 -A 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
  SEINET10448866  Sisymbrium altissimum Paul Gallian, David B. Dunn 1971-6-2 Gallian 521 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. Comment
  CHSC99110  Sisyrinchium bellum Lowell Ahart; John Dittes 2008-6-20 14964 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC21381  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  JEPS62138  Smilacina stellata W. L. Jepson 1918-8-2 7783 Lassen lower bench of creek 1 mi below Boni Ranch house; Long Valley, Long Valley Creek 1371 Comment
  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
  UC1583971  Sonchus asper G. Schoolcraft 1990-7-31 2117 Lassen along Hwy 299 between Bieber and Nubieber 1249 Comment
  CHSC117296  Sonchus asper subsp. asper Lowell Ahart 2016-7-13 21111 Lassen 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Aidn, hills at the southern slope of Big Valley. 1289 Comment
  POM119382  Sparganium eurycarpum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET10879624  Sparganium natans Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 844 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. T31N R7E S26 SW 1/4. 1981 Comment
  UC13098  Spiraea densiflora M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  UC729643  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen between Grassy Lake and Snag Lake; Mt. Lassen National Park Comment
  SEINET3818362  Spiranthes romanzoffiana A. A. Heller 1938-1 Lassen Comment
  CHSC41843  Stachys ajugoides var. rigida P. V. Caldwell 1972-7-8 262 Lassen Eagle Lake. 1 mile from the forest road toward Papoose Meadows on Papoose Creek. Comment
  UC1483862  Stachys ajugoides var. rigida G. Schoolcraft 1980-8-13 348 Lassen n side Diamond Mtn. 1950 Comment
  HSC26818  Stanleya elata D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19286 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CHSC75482  Stanleya viridiflora Vernon H. Oswald; Lowell Ahart 1999-6-9 9744 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
  CHSC68859  Stellaria crispa Vernon Oswald; Lowell Ahart 1997-6-24 8610 Lassen South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SEINET10965514  Stellaria longipes Mary Susan Taylor 1982-6-12 Taylor 4660 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  UC120067  Stellaria longipes var. longipes unknown 1892-6-23 Lassen Honey Lake Comment
  UC1523750  Stellaria longipes var. longipes Gary Schoolcraft 1981-6-25 484 Lassen e fork Willard Creek 1584 Comment
  CAS-BOT-BC375006  Stenotus acaulis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50659 Lassen Summit ridge of Diamond Mountain 2346 Comment
  CHSC5211  Stenotus acaulis J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  CHSC68848  Stenotus acaulis Vernon Oswald; Lowell Ahart 1997-6-24 8630 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS17401  Stephanomeria exigua subsp. exigua Rimo Bacigalupi and G. T. Robbins 1955-7-21 5425 Lassen In drainage of Rush Creek, S of the Smoke Creek Ranch Road, 1.3 mi E of the Nevada State line and 17.5 mi E of U.S. Highway 395. 1341 Comment
  SEINET11262513  Stephanomeria lactucina Robert L. Johnson, Mikel R. Stevens 2015-7-10 3939 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  UC303058  Stephanomeria lactucina Pearl Safford Lassen Susanville [uncertain locality] Comment
  CAS-BOT-BC205201  Stephanomeria pauciflora James R. Shevock; Barbara Ertter 1986-7-20 11738 Lassen Northern Sierra Nevada. Along U.S. highway 395 at Red Rock Road 1500 Comment
  CHSC23504  Stephanomeria tenuifolia Wayne O. Baum 1971-7-19 71 -76 Lassen E. slope of Gallatin Peak. 2072 Comment
  JEPS36870  Stephanomeria tenuifolia Brown and Wieslander 1922-7-23 35 Lassen Martin Springs Eagle Lake Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  UCR67447  Stephanomeria virgata George K. Helmkamp 1990-9-23 D- 8 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UC589864  Stipa exigua L. W. Whitney 1935-6-16 3272 Lassen base of Crater Mt. Crater Mt. Comment
  CHSC80622  Streptanthella longirostris Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolscraft 2001-6-2 10039 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  HSC23510  Stuckenia pectinata R. Carter 1967-7-13 594 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  CHSC48447  Swertia albicaulis var. albicaulis Vernon Oswald 1986-5-28 2060 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  CHSC5251  Swertia albicaulis var. albicaulis 1944-6-23 Lassen Eagle Lake. 1615 Comment
  CHSC29889  Swertia albicaulis var. nitida Robin Ondricek 1978-6-6 34 Lassen Along road to ELFS 1.2 mi from intersection with Hwy 139. 1499 Comment
  UC477492 Image available Swertia albicaulis var. nitida A. G. Brenneis 1928-5-29 6 Lassen 1 to 1.5 mi se Willow Sprgs.; Lassen Forest; Lassen Forest, Lassen Co. 1371 Comment
  JEPS123497  Symphoricarpos longiflorus Wilson Collison, Jaileen Merced 2015-8-8 CA 320 -143 Lassen To Highway 139 W (North) from Termo - Grasshopper Road continue 4.5 mi (1 mile after entering forest). Turn right on to Grand Road (37N29). Continue uphill (East), right at 1st fork, straight at 2nd. Comment
  CHSC12410  Symphoricarpos rotundifolius var. rotundifolius Lynn R. Thomas 1969-6-20 133 Lassen Road up Black Mt. N of Five Corners, ca. 3 mi S of E. L. B. S. 1706 Comment
  CHSC54393  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald 1991-6-25 4694 Lassen Lassen Volcanic National Park. East side of Butte Lake, somewhat south of its outlet. 1842 Comment
  CHSC60349  Symphoricarpos rotundifolius var. rotundifolius Mary Ann Showers 1992-6-13 2532 Lassen Lassen Volcanic National Park. East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. 1841 Comment
  CHSC67077  Symphoricarpos rotundifolius var. rotundifolius Jeanne Boze 1981-6-12 120 Lassen 1/4 mi. south of Eagle Lake Field Station. 1615 Comment
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CAS-BOT-BC97525  Symphyotrichum ascendens Elmer I. Applegate 1923-9-30 4036 Lassen Constantia, Honey Lake Valley Comment
  CHSC76081  Symphyotrichum ascendens Lowell Ahart; Vernon H. Oswald 1999-9-13 8230 Lassen Along the south side of the dirt road, Willow Creek is on the south side of the road, about 250 yards east of the sign-in station along Highway 139, Willow Creek Wildlife Area. 1463 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
  CAS-BOT-BC98929  Symphyotrichum foliaceum var. parryi G. Schoolcraft 1994-7-6 2359 Lassen About 1 mile west of Boot Lake 204 Comment
  CAS-BOT-BC97916  Symphyotrichum frondosum Leo Whitney 1934-9-6 3070 Lassen South shore of Eagle Lake, Lassen National Forest 1584 Comment
  UC1745661  Symphyotrichum frondosum Annetta M. Carter 1945-9-30 1724 Lassen Sam Webb place near end of Eagle Lake. 1554 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
  RSA201220  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 s.n. Lassen Ca. 4 miles SE of Susanville. Comment
  SEINET10617707  Taraxacum californicum David B. Dunn, Billy Joe Cox 1971-1 Lassen Comment
  CHSC23557  Taraxacum officinale W. O. Baum 1971-6-6 33 Lassen E slope of Gallatin Peak in fire trail. 1920 Comment
  CAS-BOT-BC376900  Taraxacum officinale A. M. Vollmer; L. Beane 1953-7-1 62 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC30556  Taraxia subacaulis Sori H. Shad 1970-6-26 15 Lassen Collected in Deans Meadow. 1828 Comment
  CHSC59758  Taraxia tanacetifolia Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In meadows by creek in Balls Canyon. 1219 Comment