Search Results — 2000 specimen records retrieved (1594 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA23835  Abronia turbinata S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CAS-BOT-BC330610  Acer glabrum var. glabrum Clare B. Hardham 1969-8-28 17438 Lassen Sierra Nevada. West of Janesville. 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
  POM85381  Acer glabrum var. torreyi Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain, Susanville, Perkins Ranch 1829 Comment
  CAS-BOT-BC334175  Acer negundo var. californicum J. T. Howell 1975-7-23 s.n. Lassen Susanville, in park 1295 Comment
  CHSC12419  Achillea millefolium Anne Linda Brisk 1969-6-20 9 Lassen Growing in Dean's Meadow. 1950 Comment
  CHSC61621  Achillea millefolium Arthur C. Barrett 1918-6-19 29 Lassen Laufman Ranger Station. NW slope in Plumas Forest. 1463 Comment
  CAS-BOT-BC260403  Achnatherum hymenoides P. Monnet 1913-7-1 799 Lassen Hot Springs Peak 1828 Comment
  UC593529  Achnatherum hymenoides E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1745 Lassen e-facing slope of gully in mountain above Red Rock 1420 Comment
  UC1024816  Achnatherum lemmonii Leo Whitney 1935-6-19 3263 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD37477  Achnatherum lemmonii Beecher Crampton 1960-6-18 5717 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UCD50509  Achnatherum lemmonii R. Tofsrud 1947-7-1 243 Lassen Between Bieber and Nubieber. Comment
  UCD50700  Achnatherum lemmonii G. L. Stebbins Jr.; J. A. Jenkins 1937-7-11 2323 Lassen Black Mt. about mile below summit. Lassen County. 1950 Comment
  UCD50709  Achnatherum lemmonii George A. Fischer; Irwin H. Johnson 1933-7-12 198 Lassen Grass Valley. 1696 Comment
  CAS-BOT-BC216849  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-7-31 50059 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  UC506985  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F- 215 Lassen Lassen Forest 1706 Comment
  UC506986  Achnatherum occidentale subsp. occidentale George A. Fischer and Irwin H. Johnson 1933-7-12 F- 218 Lassen Lassen Forest 1722 Comment
  CAS-BOT-BC218610  Achnatherum occidentale subsp. pubescens John Thomas Howell 1976-7-19 51981 Lassen Gold Run Creek southwest of Susanville, Sierra Nevada 1386 Comment
  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
  UC1153871  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2066 Lassen 5.5 mi w, along State Hwy. 36 Susanville (volcanic rubble under pine) 1447 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
  UCD32668  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-6 2069 Lassen Lassen County, 1 mile east of Johnstonville, along US highway 1395. 1219 Comment
  UCD51169  Achnatherum occidentale subsp. pubescens A. L. Hormay 1934-6-30 s.n. Lassen on Harvey Mountain, Lassen National Forest. 2133 Comment
  SEINET235273 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC1024812  Achnatherum thurberianum Leo Whitney 1935-6-19 3267 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1153870  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen US Hwy. 395 7 mi n Madeleine Comment
  UCD34873  Achnatherum thurberianum Beecher Crampton 1964-6-27 7095 Lassen Lassen County, ca. 5 miles S.W. of Ravendale, BLM land. Comment
  UCD51423  Achnatherum thurberianum Beecher Crampton 1964-6-27 7091 Lassen 21 miles north of Susanville, north end of Eagle Lake, B.L.M. Bucks Bay allotment. 1676 Comment
  CAS-BOT-BC217992  Achnatherum webberi Clare B. Hardham 1969-8-28 17430 Lassen Slope W of Janesville Comment
  CHSC91301  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2005-6-2 11970 A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  JEPS121257  Acmispon denticulatus Lowell Ahart, John Dittes 2013-7-23 18888 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC467713  Aconitum columbianum Franklin P. Nutting 1900-7-2 Lassen Pine Creek Comment
  CAS-BOT-BC412872  Aconogonon davisiae John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50667 Lassen NE. of Diamond Mt. 2255 Comment
  UCD98583  Aconogonon davisiae Hans Leschke 1945-9-14 s.n. Lassen Mt. Lassen trail. 2621 Comment
  UC1220355  Adonis aestivalis J. R. Sweeney 1962-6-5 2653 Lassen 1/2 mi n ow Willow Creek Guard Station (16 mi n of Susanville on State Highway 139, 54 mi s of Adin); State Highway 139 1219 Comment
  UCD51460  Aegilops cylindrica Andy Babcock 1981-6-10 s.n. Lassen Comment
  CHSC65107  Agastache parvifolia Vernon H. Oswald 1995-7-24 7132 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  JEPS126483  Agastache parvifolia Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -047 Lassen Directly off Horn Ranch Road. Follow Horn Ranch Road until you reach a fork with a sign. Follow road left then continue for about 3-5 miles. 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
  SEINET11261376  Agastache parvifolia Mary Merello, H. H. Schmidt; L. Woodruff 1993-6-28 746 Lassen Poison Lake. Along Hwy 44 just south of the Hwy 89, Hyw 44 instersection.; 0 1700 Comment
  UCR73167  Agoseris glauca G. L. Webster 1989-5-13 7704 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA715617  Agoseris glauca var. dasycephala L. 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 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  CHSC101022  Agoseris glauca var. laciniata John Dittes 2008-5-22 1539 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace on northeast side of Willow Creek. 483 Comment
  CHSC71219  Agoseris glauca var. laciniata Vernon H. Oswald; Lowell Ahart 1998-6-4 9142 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  CHSC93703  Agoseris glauca var. 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
  UC29394  Agoseris grandiflora var. grandiflora M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixie Mt. Dixie Mt. Comment
  CAS-BOT-BC15350  Agoseris heterophylla Doris Kildale Gillespie 1930-5-13 9370 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC22894  Agoseris heterophylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49168 Lassen Elysian Valley northwest of Janesville 1325 Comment
  UC1562323  Agropyron cristatum Vernon H. Oswald and Lowell Ahart 1990-7-25 4396 Lassen 2.2 mi w of Highway 395 (intersection of Hwy 70 and Scott Road) 1463 Comment
  UCD149818  Agropyron cristatum subsp. pectinatum Harry George 1965-6-1 s.n. Lassen Susanville Airport. 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
  UC1130648  Agrostis alba H. S. Yates 1936-8-11 6069 Lassen Baxter Creek Susanville Quadrangle Comment
  UC1142988  Agrostis exarata A. L. Hormay 1941-6-25 21 Lassen Burgess Spring Lassen Forest 1676 Comment
  CAS-BOT-BC139295  Agrostis idahoensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49523 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  POM115803  Agrostis microphylla Marcus E. Jones 1897-6-23 132 Lassen Amedee. 1220 Comment
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest Comment
  CAS-BOT-BC138623  Agrostis stolonifera Margaret Williams; Steven Williams 1974-7-26 74 -L-39 Lassen Sierra Nevada. Near Hallelujah Junction west of Highway 395 and south of Highway 70. 1493 Comment
  UCSC000092  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Bogard Ranger Station - Lassen National Forest Comment
  CAS-BOT-BC267061  Alisma John Thomas Howell 1974-7-10 50546 Lassen Elysian Valley 1325 Comment
  POM313032  Alisma gramineum Malcolm A. Nobs, S. Galen Smith 1949-7-22 1074 Lassen Along Willow Creek, Willow Creek Valley, 10 miles north of Susanville Comment
  UC978580  Alisma gramineum Verne Grant and Irving Schneider 1947-8-1 8221 Lassen irrigation ditch running sw into State Fish and Game nesting area on west side of Section 19; Madeline Plain Comment
  CHSC113091  Alisma lanceolatum Lowell Ahart; John Dittes 2013-7-22 18841 Lassen West margin of a duck field, about 80 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1536805  Alisma plantago-aquatica Gordon H. True Jr. 1939-7-6 1016 Lassen George Bailey Ranch Honey Lake Valley Comment
  JEPS119644  Alisma triviale Lowell Ahart, John Dittes 2012-7-9 18294 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0039525  Alisma triviale Lowell A. Ahart, John Dittes 2012-7-9 18294 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  POM110306  Allium acuminatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UCR45852  Allium acuminatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6026 Lassen Ash Valley, along branch road off Adin-Madeline Road just south of bridge over Ash Creek, & c. 16 mi. SE of Adin; 2.5 mi. SE of junction with main road 1555 Comment
  UCD150395  Allium acuminatum Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  CHSC7663  Allium anceps Beverley J. Wise 1969-5-4 140 Lassen 23.4 mi. east of Susanville on Hwy 395. 1615 Comment
  SEINET3883828  Allium atrorubens Arnold Tiehm, Jan Nachlinger; Margaret Williams 1988-6-2 11702 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway.; 0 1387 Comment
  UC1567422  Allium atrorubens var. atrorubens G. Schoolcraft 1989-5-31 1888 Lassen slopes of Skedaddle Creek n Wendel Rd.; Skedaddle Creek 1402 Comment
  RSA367053  Allium bisceptrum Rockwell 1925-01 s.n. Lassen Eagle Lake. Comment
  CHSC60864  Allium lemmonii Vernon H. Oswald; Lowell Ahart 1993-6-28 5587 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valey, E of Poison Lake. 1728 Comment
  JEPS26135  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spring Experiment Range 1798 Comment
  RSA504589  Allium lemmonii Bruce Bartholomew, B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  SEINET188333  Allium lemmonii C. L. Hitchcock 1946-5-26 6640 Lassen Overflow of Pitt River 1 mi W of Bieber Comment
  CAS-BOT-BC470925  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile west of Bieber Comment
  SEINET10532723  Allium lemmonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17786 Lassen 6 miles n of hallelujah jct. On u.s. Hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge & in sandy wash 1402 Comment
  UC13792  Allium lemmonii M. S. Baker and Frank Nutting 1894-7-7 Lassen Harvey's Ranch Comment
  CAS-BOT-BC474046  Allium parvum Louella Bass s.n. Lassen Elysian Valley Comment
  SEINET8191388  Allium parvum L. Miller 1934-3-29 s.n. Lassen E of Susanville. Comment
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  CAS-BOT-BC474073  Allium platycaule H. D. Ripley; R. C. Barneby 1943-6-14 5733 Lassen Fredonyer Pass 1676 Comment
  RSA367108  Allium platycaule Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
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Nov 17 2011
  CHSC91199  Alnus incana subsp. tenuifolia Lowell Ahart; John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  HSC22949  Alopecurus aequalis John Pratt 1970-6-21 35 Lassen 1707 Comment
  UC60734  Alopecurus aequalis M. S. Baker and F. Nutting 1894-7-1 Lassen n. side Dixey Mts. Comment
  UCD55830  Alopecurus aequalis L. Whitney 1933-8-4 2200 Lassen Lassen National Forest, ca. 8 miles northwest of Eagle Lake, Slate Creek. 1920 Comment
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  UC1136824  Alopecurus geniculatus George A. Fischer and Irwin H. Johnson 1933-7-11 F 190 Lassen Dry Lake Lassen Nat'l Forest, Grass Valley, Dry Lake 1694 Comment
  CAS-BOT-BC137990  Alopecurus pratensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49219 Lassen Sierra Nevada. Elysian Valley northwest of Janseville. 1325 Comment
  JEPS123852  Amaranthus blitoides Lowell Ahart, John Dittes 2015-7-14 20324 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  CHSC76307  Amphiscirpus nevadensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8228 Lassen Along a small slough, on the south side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  SEINET9183301  Amphiscirpus nevadensis R. R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  UCD146584  Amphiscirpus nevadensis Richard R. Halse 2010-8-25 8087 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CAS-BOT-BC222255  Amsinckia John Thomas Howell 1934-6-10 11870 Lassen Honey Lake Valley, 24 miles s. of Susanville Comment
  CHSC99503  Amsinckia intermedia Lowell Ahart; John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  POM71504  Amsinckia intermedia Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA0091257  Amsinckia macrosepala Amos Arthur Heller 1938-6-23 15204 Lassen Just outside of Johnstonville on U.S. Highway 395. Comment
  CHSC91309  Amsinckia menziesii Lowell Ahart; John Dittes 2005-6-1 11899 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS61105  Amsinckia menziesii var. menziesii W. L. Jepson 1918-8-2 7777 Lassen Beckwith Pass 1463 Comment
  HSC28822  Amsinckia tessellata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19277 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  SEINET10939652  Amsinckia tessellata Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2574 Lassen 3 mi S of Hallelujah Jct, on US Hwy 395, Jct of US 395 & CA 70; along roadside and in Artemesia-grassland field. Comment
  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
  RSA622142  Amsinckia tessellata var. tessellata B. J. Cox, D. B. Dunn 1971-6-2 2574 Lassen 3 mi. S. of Hallelujah Jct., on U.S. Hwy. 395, Jct. of U.S. 395 & Calif. 70. Comment
  JEPS88217  Ancistrocarphus filagineus Vernon H. Oswald and Lowell Ahart 1996-6-17 7797 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off of Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  JEPS94117  Anisocoma acaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9134 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  CHSC12433  Antennaria Robert Severin 1969-6-26 22 Lassen Papoose Meadow, 4 mi s of E.L.B.S.; 1/4 mi n of Cow Camp. 1630 Comment
  CHSC36438  Antennaria argentea Dave Leuck 1981-6-13 16 Lassen N. E. side of Galletin Peak. 1706 Comment
  UC891493  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen ca 12 mi n of, at lava beds Fall River Mills (Shasta Co.); Fall River 1371 Comment
  CAS-BOT-BC63875  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1371 Comment
  CHSC68729  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1997-5-27 8505 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  CHSC71069  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1998-5-22 9088 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  JEPS107971  Antennaria dimorpha Lowell Ahart, John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  CAS-BOT-BC69135  Antennaria geyeri Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CHSC60808  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5584 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  SEINET3145605  Antennaria geyeri M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  UC1137666  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Lassen National Forest 1828 Comment
  UC773955  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Burgess Spring Experiement Range 1828 Comment
  CAS-BOT-BC69140  Antennaria geyeri Clarence R. Quick 1964-7-29 64 -89 Lassen Blacks Mt. Experimental Forest 1798 Comment
  UC1125572  Antennaria luzuloides A. Simontacchi 1940-6-3 725 Lassen 8.3 mi se Alcohol Jacks Cabin; Halls Flat Quad. 1706 Comment
  UC1523764  Antennaria luzuloides Gary Schoolcraft 1981-7-8 498 Lassen near Coulthurst Flat 1920 Comment
  POM39272  Antennaria rosea Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  SBBG63415  Antennaria rosea S. W. Hutchinson, M. N. Ackley -Jun-1925 214 Lassen Eagle Lake 1554 Comment
  UC1037270  Antennaria rosea Leo Whitney 1934-7-10 1768 Lassen near, 14 mi w of Eagle Lake Harvey Spring; Lassen National Forest, Harvey Valley 1737 Comment
  UC1523723  Antennaria rosea Gary Schoolcraft 1982-8-10 865 Lassen se of, along Hwy 139 Adin 1584 Comment
  UC1609102  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  CHSC60713  Antennaria rosea subsp. confinis Vernon H. Oswald; Lowell Ahart 1993-6-14 5526 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
  HSC28853  Antennaria rosea subsp. rosea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19180 Lassen Harvey Valley near Cone Springs Comment
  UC885063  Antirrhinum vexillocalyculatum subsp. breweri C. L. Hitchcock 1940-5-26 6597 a Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  CHSC4823  Apocynum androsaemifolium R. Carter 1967-7-21 624 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Dramond Mountains. Comment
  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
  HSC63938  Apocynum cannabinum Teresa Prendusi 1980-7-16 Lassen Willow Creek. Comment
  SEINET7881828 Image available Apocynum pumilum Helen K. Sharsmith 1955-1 4516 Lassen Ponderosa Pine-Black Oak forest adjacent to Highway 89 north of Hat Creek Ranger Station, Lassen National Forest. Altitude ca. 3800 feet. 1158 Comment
  CHSC12479  Aquilegia formosa var. truncata Carol Weld 1969-6-25 25 Lassen Murrer's Meadow. 1524 Comment
  HSC25977  Arabis holboellii var. retrofracta D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19270 Lassen Harvey Valley near Cone Springs Comment
  HSC30184  Arabis holboellii var. retrofracta D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19199 Lassen Harvey Valley near Cone Springs Comment
  HSC82265  Arabis holboellii var. retrofracta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5992 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA0129905  Arabis lemmonii var. depauperata Clare B. Hardham 1961-6-16 7442 Lassen Diamond Peak, Lassen/Plumas counties. Comment
  JEPS53113  Arabis puberula M. S. Baker and F. P. Nutting 1894-7-2 Lassen s. side Dixey Mts. Comment
  JEPS53155  Arabis rectissima var. rectissima Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  CHSC29858  Arceuthobium campylopodum Robin L. Ondricek 1978-8-8 118 Lassen On road to Lower Dry Lake, .1 mi ne of intersection with road which leads to main road to ELFS. 1609 Comment
  UC1037287  Arceuthobium campylopodum Leo Whitney 1934-7-15 1703 Lassen ca 15 mi w Eagle Lake; Lassen National Forest, Crater Mtn Comment
  CAS-BOT-BC45901  Arctostaphylos nevadensis A. W. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45903  Arctostaphylos nevadensis Mrs. E. C. Sutliffe 1927-6-1 s.n Lassen Drakesbad, Lassen Volcanic Park Comment
  CAS-BOT-BC45906  Arctostaphylos nevadensis Marcus E. Jones 1897-7-7 s.n Lassen Lassen's Peak 1828 Comment
  CAS-BOT-BC45910  Arctostaphylos nevadensis Hans Leschke 1957-7-12 s.n Lassen Above Cold Boiling Lake 2316 Comment
  NY223210  Arctostaphylos patula P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1508.8 Comment
  SD43498  Arctostaphylos patula Philip A. Munz 1947-5-18 11865 Lassen Fredoyner Forestry Public Campground, W of Susanville 1509 Comment
  UCR23066  Arctostaphylos patula Susanne M. James 1980-4-23 117 Lassen Hwy 30, 5.2 mi west of Susanville, 0.9 mi W Hwy A1 Comment
  CAS-BOT-BC42164  Arctostaphylos patula subsp. patula Louella Bass 1974-4-15 151 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC43783  Arctostaphylos stanfordiana T. S. Brandegee 1886-1-1 30 Lassen Barrow pit along county road S. of Mapes Ranch, Henry Lake Valley Comment
  HSC7750  Arctostaphylos viscida R. J. Vernimen 1963-5-4 28 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
Read comments
Apr 29 2013
  RSA702604  Arenaria congesta L. P. Janeway 2004-6-26 8141 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
  UC1125789  Arenaria congesta var. congesta A. Simontacchi 1940-6-12 847 Lassen 3.5 mi sse Blaks Mtn.; Lassen National Forest,Halls Flat Quadrangle Comment
  UC120411  Arenaria congesta var. suffrutescens T. S. Brandegee 1892-7-26 Lassen Milford Comment
  UCD95199  Argemone munita Verne Grant; Irving Schneider 1947-9-5 8367 Lassen northwest shore of Eagle Lake, by Sam Webb's place (Spaulding.) Comment
  CAS-BOT-BC401656  Argemone munita subsp. munita Margaret Williams; Steven Williams 1974-7-26 74 -L-11 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  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
  CAS-BOT-BC400405  Aristolochia californica Jas. McMurphy 1914-4-1 s.n. Lassen Pitt Comment
  CAS-BOT-BC82113  Arnica chamissonis B. Bartholomew; B. Anderson 1988-7-22 4498 Lassen Mosquito Creek ca. 2 km SW of patterson Meadow, southern end of the Warner Mountain 2080 Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  CHSC65290  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1995-8-14 7186 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  UC584281  Arnica chamissonis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-13 2343 Lassen Cleghorn Reservoir 1828 Comment
  HSC12534  Arnica chamissonis M. S. Baker 28 Jul [year missing] Lassen South of Eagle Lake Comment
  RSA0059627  Arnica chamissonis subsp. foliosa Lowell Ahart, John Dittes 2011-6-21 17534 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
  RSA32851  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen More or less shaped gravelly slope in the yellow pine forest 1 mile east of Fredonyer Pass, on State Hwy #36 1738 Comment
  UC726334  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mi e, on State Highway #36 Fredonyer Pass 1737 Comment
  OBI75878  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 SW of SW 1500 Comment
  SD113192  Arnica mollis Darley F. Howe 1964-8-2 3920 Lassen East Creek, Warner Mountains, Modoc National Forest 2010 Comment
  CAS-BOT-BC85030  Arnica sororia E. B. Babcock; G. L. Stebbins 1936-6-8 1788 Lassen Gentle north facing slope of hillside, 2 miles north of Madeline. 1371 Comment
  CHSC108006  Arnica sororia Lowell Ahart; John Dittes 2011-6-20 17483 Lassen About 30 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  RSA0059452  Arnica sororia Lowell Ahart, John Dittes 2011-6-20 17483 Lassen About 30 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  RSA78915  Artemisia arbuscula subsp. arbuscula E. K. Balls, Percy C. Everett 1952-10-10 18142 Lassen 8 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UC762616  Artemisia biennis R. F. Hoover 1940-10-10 4681 Lassen Johnstonville Comment
  UCD129263  Artemisia biennis Malcolm A. Nobs; Galen Smith 1949-8-20 1482 Lassen Long Creek, 1 mile north of Doyle, Honey Lake Valley. Comment
  UCR67442  Artemisia cana George K. Helmkamp 1990-9-23 A- 5 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UC1242648  Artemisia cana subsp. bolanderi A. A. Beetle 1957-8-16 12910 Lassen Litchfield Comment
  UC1507398  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 194 Lassen Painter Flat 1722 Comment
  UC747153  Artemisia cana subsp. bolanderi G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  CAS-BOT-BC84829  Artemisia cana subsp. cana Ernest C. Twisselmann 1961-7-21 6572 Lassen Harvey Valley 1981 Comment
  CAS-BOT-BC90328  Artemisia douglasiana Ynez Whilton Winblad 1935-9-28 s.n. Lassen Horse Lake Comment
  CHSC65291  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald; Lowell Ahart 1995-8-14 7196 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
  JEPS97304  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald and L. Ahart 1995-8-14 7196 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  SEINET245807  Artemisia nova Arnold Tiehm, Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  SEINET7153386 Image available Artemisia nova A. Tiehm, G. Schoolcraft 2003-1 14368 Lassen 2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  UC762615  Artemisia nova Robert F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  UCD129340  Artemisia nova W. A. Williams 1951-8-6 s.n. Lassen Black's Mountain Range Experiement Station, (old Hell's Flat Ranger Station site). 25 miles south of Pittville. 1584 Comment
  CHSC30627  Artemisia tridentata M. A. Dubin 1975-7-20 8 Lassen Eagle Lake Field Station by Turkey Roll Hill. 1569 Comment
  CHSC60307  Artemisia tridentata Mary Ann Showers 1992-6-13 2534 Lassen Lassen Volcanic Naitonal Park. Trail from Snag Lake jct to Widow Lake. 1828 Comment
  UC29711  Artemisia tridentata J. Burtt Davy Jun 17 1897-Jun 24 1897 3343 Lassen Honey Lake Valley Comment
  SEINET3360477 Image available Artemisia tridentata subsp. tridentata A. A. Beetle 1957-8-16 12891 Lassen Between Ravendale and Termo. 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
  JEPS123853  Asclepias fascicularis Lowell Ahart, John Dittes 2015-7-14 20325 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  SEINET12319574  Asclepias fascicularis Unknown 1978-1 84 Lassen E shore of Eagle L., S of Little Troxel Pt., T32N, R11E, sec14 1573 Comment
  POM39868  Aster campestris Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA18255  Aster foliaceus var. parryi C. B. Wolf 1929-9-1 3787 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  POM261593  Aster integrifolius Alice Eastwood 1912-8-22 1883 Lassen Morgans Springs Comment
  CDA10316  Aster lanceolatus subsp. hesperius O. W. Newman Aug 1915 Lassen Susanville. Comment
  RSA712642  Aster occidentalis var. occidentalis L. P. Janeway 2005-8-31 8513 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  RSA0006691  Astragalus accidens var. hendersonii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 108749 Lassen South of Constantia. 1463 Comment
  CAS-BOT-BC177310  Astragalus agrestis James Jokerst 1983-7-24 1875 Lassen Near Madeline Plains 1614 Comment
  NY790907  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles northwest of Termo 1615.4 Comment
  CAS-BOT-BC177441  Astragalus andersonii M. S. Taylor 1982-5-29 4561 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  CDA26597  Astragalus andersonii L. Ahart, J. Dittes 2005-6-1 11917 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. Comment
  CHSC77208  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle. 1402 Comment
  UC13320  Astragalus andersonii L. T. Stephenson Sept 1897 Lassen Chat Comment
  NY791374  Astragalus andersonii LeDoux 1973-5-24 861 Lassen Collected at jct. of Highways 70 and 395 at Arco Station. Comment
  SEINET4856104  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley, ca. 25 km W of madeline, along Ash Valley Rd., on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sect. 5. 1550 Comment
  CAS-BOT-BC178761  Astragalus canadensis var. brevidens John Thomas Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake 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
  NY797392  Astragalus canadensis var. brevidens R. R. Halse 1991-7-28 4247 Lassen Along State Highway 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville 1558 Comment
  UCR119087  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Modoc Plateau, 10 miles north of Milford along US-395. 1220 Comment
  SEINET10838264  Astragalus curvicarpus Paul Gallian, David B. Dunn 1971-6-2 Gallian 509 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC177845  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-16 8336 Lassen Near Susanville Comment
  UC1609459  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111,36N01) 1.9 mi n of Hwy 44 on the se edge Poison Lake; se edge Poison Lake 1709 Comment
  UC84408  Astragalus curvicarpus var. curvicarpus unknown 1892-6-23 Lassen Honey Lake Comment
  RSA59356  Astragalus curvicarpus var. curvicarpus E. K. Balls 1950-5-21 14825 Lassen Near Standish, Hwy 395, 7 miles from jct of Hwy 36 and 395. 1250 Comment
  SEINET5325006  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch. 1280 Comment
  SEINET7103990  Astragalus curvicarpus var. curvicarpus T. N. Kaye 1990-6-27 1254 Lassen Ash Valley Road, 16 miles east of Adin.; 0 Comment
  CAS-BOT-BC182954  Astragalus filipes Peter H. Raven; Otto T. Solbrig 1958-6-17 13290 Lassen Along United States Highway 395, 0.4 miles south of Ravendale Comment
  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
  NY658506  Astragalus filipes M. S. Baker 1894-6-30 s.n. Lassen Big Valley Comment
  CDA26669  Astragalus filipes T. C. Fuller 1965-8-26 14038 Lassen Haskell Parks range, Diaz Flat, ca. 5 miles east of Hayden Hill, northwest Lassen County. 0 Comment
  SEINET10903957  Astragalus filipes Williams 1983-7-31 Williams 83 -125-1 Lassen Ash valley road, 17 mi from aden. 1829 Comment
  SEINET231384 Image available Astragalus filipes Margaret J. Williams 1983-7-31 83- 125 -1 Lassen Ash Valley Road, 17 mi from Aden 1829 Comment
  CAS-BOT-BC186862  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford 1264 Comment
  CHSC63395  Astragalus gibbsii V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6355 Lassen Ash Valley between Adin and Madeline, ca. 0.5 mi along the road leading SE from the right-angle turn on Lassen 527 near the gravel pit. 1554 Comment
  SEINET3416806 Image available Astragalus gibbsii Lewis S. Rose 1940-6-16 40595 Lassen Susanville, Susanville. 1280 Comment
  CAS-BOT-BC186866  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1944-5-29 5951 Lassen Constantin 1371 Comment
  RSA647557  Astragalus gibbsii Marion P. Harthill 1971-6-20 220 Lassen Ravendale Comment
  CAS-BOT-BC186912  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC186916  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  RSA0006769  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 s.n. Lassen West of Susanville. Comment
  JEPS91412  Astragalus lemmonii Dean Wm. Taylor with Glenn Clifton 1990-6-12 10881 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  POM45395  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  RSA294940  Astragalus lentiginosus var. albifolius A. Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile N of Wendel. 1232 Comment
Read comments
Oct 25 2007
  CAS-BOT-BC187156  Astragalus lentiginosus var. chartaceus John Thomas Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  NY675509  Astragalus lentiginosus var. chartaceus H. D. D. Ripley 1943-6-14 5744 Lassen Hidden Valley east of Susanville 1311 Comment
  JEPS87395  Astragalus lentiginosus var. floribundus Vernon H. Oswald and Lowell Ahart 1993-7-8 5663 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi n Hwy 44 (se edge Poison Lake); se edge Poison Lake 1709 Comment
  CHSC5280  Astragalus lentiginosus var. lentiginosus 1926-6-1 Lassen Buck's Point, Eagle Lake. 1615 Comment
  JEPS114628  Astragalus lentiginosus var. lentiginosus Lowell Ahart, John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber 1268 Comment
  UC13403  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  UC1609460  Astragalus lentiginosus var. lentiginosus Vernon H. Oswald and Lowell Ahart 1993-7-8 5663 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi n Hwy 44 (se edge Poison Lake); se edge Poison Lake 1709 Comment
  CHSC67216  Astragalus lentiginosus var. platyphyllidius James D. Jokerst 1991-5-29 3310 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
  RSA109610  Astragalus lentiginosus var. platyphyllidius H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen Hidden Valley E of Susanville 1311 Comment
  CDA26707  Astragalus malacus T. C. Fuller 1963-6-11 10659 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  NY676224  Astragalus malacus B. M. Bartholomew 1993-5-13 6551 Lassen Just south of Ravendale 1580 Comment
  UC13451  Astragalus pulsiferae L. T. Stephenson Sept., 1897 Lassen Chat Comment
  CHSC98309  Astragalus pulsiferae var. coronensis R. Ondricek-Fallscheer 2003-6-7 210 Lassen About 27 air mi NE of Susanville, 9 air mi SSE of Ravendale, and 0.5 air mi NW of Rye Patch Springs; 0.5 mi E of Hwy 395 and 150 ft. N of road to Ramhorn Springs Campground. 1615 Comment
  SEINET8522264  Astragalus pulsiferae var. coronensis Unknown Lassen [isotype] Comment
  NY694131  Astragalus pulsiferae var. pulsiferae A. A. Heller 1907-7-1 8674 Lassen Near Old Chat Comment
  SEINET10841190  Astragalus purshii Mary Susan Taylor 1974-5-4 Taylor 224 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  SEINET6654255  Astragalus purshii var. lagopinus Stanley L. Welsh, N. Duane Atwood 2001-6-14 28157 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1539 Comment
  CHSC60739  Astragalus purshii var. purshii Vernon H. Oswald; Lowell Ahart 1993-6-14 5520 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  JEPS108699  Astragalus purshii var. purshii H. Chappel, K. Moran, K. Strassman 2002-6-27 ALT- 13 Lassen Pit River Valley / Beaver Creek 1258 Comment
  JEPS114761  Astragalus purshii var. tinctus Lowell Ahart, John Dittes 2008-6-19 14888 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-BC192974  Astragalus purshii var. tinctus Doris Kildale Gillespie 1930-5-15 9386 Lassen 5 miles west of Susanville Comment
  UCD105481  Astragalus whitneyi B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. 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
  NY701852  Astragalus whitneyi var. siskiyouensis H. D. D. Ripley 1943-6-14 5747 Lassen Hidden Valley, east of Susanville 1585 Comment
  RSA38479  Athysanus pusillus P. A. Munz 1947-5-18 11863 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  CHSC64780  Atriplex argentea var. hillmanii Vernon H. Oswald 1995-6-7 6842 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road near milepost 19.5 just e of Skedaddle Creek, e of Wendel, ne of Susanville. 1231 Comment
  CHSC109992  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  UC769938  Atriplex confertifolia R. F. Hoover 1940-10-5 4663 Lassen Wendel Comment
  NY541161  Atriplex covillei H. M. Hall 11683 Lassen 26 miles north of Reno (on road to Doyle) Comment
  UC1567451  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen Secret Valley w Hwy 395; Secret Valley 1347 Comment
  UC7094  Atriplex gardneri var. falcata J. Burtt Davy Jun 17 1897-Jun 24 1897 3402 Lassen near Willow Ck Valley (Honey Lake Valley); , near Willow Ck Valley Comment
  SEINET515856  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 Comment
  CHSC63701  Atriplex heterosperma Vernon H. Oswald 1994-9-6 6467 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. 1490 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
  SEINET13710039  Atriplex triangularis Lowell William Ahart, Lowell William Ahart 1999-1 8209 Lassen Honey Lake Wildlife Area, 5.5 Mi SE Standish Comment
  RSA88586  Atriplex truncata J. T. Howell 1951-8-20 28226 Lassen Honey Lake Valley near Herlong 1280 Comment
  RSA0089261  Baeria Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  RSA584835  Balsamorhiza hirsuta Bruce Bartholomew, M. Gilbert, L. Skog 1993-5-13 6557 Lassen Just S. of Ravendale. 1580 Comment
  CAS-BOT-BC106494  Balsamorhiza hookeri Clarence Quick 1963-7-12 63 -38 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  JEPS19803  Balsamorhiza hookeri Rimo Bacigalupi with S. Galen Smith 1957-6-28 6013 Lassen ne of Karlo, along U.S. Highway 395 Karlo (near headwaters of Secret Cr., n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  UC1368790  Balsamorhiza hookeri John L. Strother 1970-5-23 957 Lassen 6 mi n Honey Lake 1280 Comment
  UC1794995  Balsamorhiza hookeri R. K. Brummitt 1998-5-17 19897 Lassen 12 km W of Susanville, E foot of Fredonyer Pass 1400 Comment
  OBI48169  Balsamorhiza hookeri Rhonda Riggins 1989-4-27 1635 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  UC1119027  Balsamorhiza sagittata H. P. Hagge 1929-9-11 20 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  CHSC31754  Bassia hyssopifolia E. Wolgemuth 1976-8-28 Lassen State Correctional Facility, 8 mi e of Susanville. Comment
  UCD97537  Bassia hyssopifolia E. K. Balls; P. C. Everett 1952-10-10 18137 Lassen 0.7 mi. e. of Standish, Hwy. 395, between Susanville and Alturas. 1249 Comment
  POM172679  Beckmannia syzigachne Franklin P. Nutting 1894-7-6 s.n. Lassen Dixey Valley Comment
  SD52270  Beckmannia syzigachne F. Stephens 1894-8-11 11766 Lassen Comment
  UC573777  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 mi ese Susanville; Susanville Quadrangle 1280 Comment
  UC765510  Berula erecta R. F. Hoover 1940-10-1 4658 Lassen between Jonesville and Standish (near Honey Lake) Comment
  CAS-BOT-BC169399  Betula glandulosa M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CAS-BOT-BC169400  Betula glandulosa John Thomas Howell 1934-7-9 12514 Lassen Bridge Creek Spring 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
  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
  CAS-BOT-BC413003  Bistorta bistortoides John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-13 49225 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC128014  Blepharipappus scaber Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee 1219 Comment
  CAS-BOT-BC128040  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen Sagebrush plains at south end of Secret Valley Comment
  CHSC4444  Blepharipappus scaber K. R. Stern 1967-7-1 2444 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  CHSC93244  Blepharipappus scaber John Dittes; Scott Chamberlain 2004-6-28 1006 Lassen Modoc Plateau; Long Valley; ca. 2.3 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 2.7 air-miles west of Hwy 395, ca. 1.2 air-miles east of Plumas County line; near meadow edge. 1443 Comment
  JEPS22625  Blepharipappus scaber R. F. Hoover 1940-9-28 4633 Lassen Susanville Comment
  SBBG30617  Blepharipappus scaber D. Myrick 1968-6-19 1958 Lassen Hwy 395, 23 mi S of Alturas 1524 Comment
  SEINET11261380  Blepharipappus scaber Robert L. Johnson, Mikel R. Stevens 2015-7-10 3922 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  UC194505  Blepharipappus scaber unknown 1878-4-1 Lassen Madeline Plains Comment
  CAS-BOT-BC127953  Blepharipappus scaber B. J. Hammerly 1941-6-20 s.n. Lassen On dry plateau of lava boulders 8 mi S.-E. of Likely on Blue Lake 1676 Comment
  SEINET3132721  Blepharipappus scaber J. L. Strother 1970-5-13 953 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  JEPS53205  Boechera Leland S. Smith 1918-5-11 924 Lassen Hayden Hill Modoc Forest Comment
  RSA0125912  Boechera Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1504460  Boechera pauciflora Reed C. Rollins and Kathryn W. Rollins 1981-5-31 81178 Lassen just n Eagle Lake Comment
  CHSC60335  Boechera pinetorum Mary Ann Showers 1992-6-13 2542 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 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
  CHSC99134  Boechera puberula Lowell Ahart; John Dittes 2008-6-19 14883 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CAS-BOT-BC14637  Boechera rectissima John Thomas Howell; Gordon H. True 1973-7-31 50063 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CHSC107324  Boechera retrofracta Lowell Ahart; John Dittes 2011-6-20 17509 Lassen Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin. 1511 Comment
  JEPS118280  Boechera retrofracta Lowell Ahart, John Dittes 2011-6-20 17509 Lassen Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin 1511 Comment
  SEINET12627116 Image available Boechera retrofracta Martin Schilling 2013-1 MS 257 Lassen Hat Creek overlook area, off Hwy 44, 2.86 air mi E of Sugarloaf Peak, 5 air mi NE of Hat Creek Hill, on W-facing slope, between rocks 1500 Comment
  CAS-BOT-BC25705  Boechera sparsiflora John Thomas Howell; Gordon H. True 1973-7-31 50064 Lassen Sierra Nevada. Diamond Range. Road from Janesville to Thompson Peak. 1783 Comment
  SEINET3165716  Boechera sparsiflora R. W. Spellenberg 2006-6-19 13745 Lassen along a USFS access road 1 km E of Calif. Hwy 139, the junction of road and highway 31 km SE of Modoc Co. line (just S of Adin) 1665 Comment
  CAS-BOT-BC25935  Boechera suffrutescens Blanche Clear 1940-7-25 s.n. Lassen Volcanic Park. Cinder Cone. Comment
  POM312611  Boisduvalia densiflora var. densiflora H. L. Mason 1947-8-11 13495 Lassen Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  RSA166311  Boisduvalia stricta D. M. Moore 1960-6-4 123 Lassen U.S. 299, 6.5 mi. NE of McArthur 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
  CHSC92737  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CAS-BOT-BC457057  Brodiaea coronaria subsp. coronaria A. M. Vollmer; L. Beane 1953-7-1 105 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC149498  Bromus briziformis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile west of Karls. Comment
  CAS-BOT-BC149499  Bromus briziformis B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6572 Lassen U.S. Highway 395 1.3 km south of railroad crossing and 12. 9 km north of Litchfield. 1330 Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
Read comments
Jun 19 2008
  CHSC36110  Bromus briziformis George Deniso 1978-7-28 25 Lassen Lower Dry Lakes - SE shore area of Upper lake ca 4.5 km D of Miners Point, Eagle Lake. 1645 Comment
  CHSC36451  Bromus briziformis Susan H. Euing 1982-6-2 5 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of Hwy 139 and Ravendale Rd. Comment
  CHSC36486  Bromus briziformis Margaret E. Halloran 1982-6-2 2 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of jct. Hwy 139 and Ravendale Rd. Comment
  CHSC63436  Bromus briziformis Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6308 Lassen Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. 1767 Comment
  UCD57488  Bromus briziformis Lauramay T. Dempster 1961-6-17 1675 Lassen About 8 miles north of Karlo Road junction with Hwy. 395. 1584 Comment
  SEINET3921578  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8909 Lassen Vicinity of spring at fork to Painters Flat on east side of Oberservation Peak. 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance.; 0 1680 Comment
  SEINET3921581  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 Comment
  UCR119112  Bromus carinatus Beecher Crampton 1954-7-5 2055 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  UC1136818  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1820 Comment
  UC53631  Bromus carinatus var. carinatus M. S. Baker and Frank Nutting 1894-7-5 Lassen s of Dixie Valley Comment
  UCD59104  Bromus carinatus var. marginatus A. A. Beetle 1941-6-28 2802 Lassen 10 miles W of Chester. 1524 Comment
  UC1024682  Bromus ciliatus Leo Whitney 1934-7-26 2164 Lassen 7-8 mi sw of Eagle Lake (near Bridge Creek, Lassen National Forest, Bridge Creek Camp); Lassen National Forest, Bridge Creek Camp 1737 Comment
  CAS-BOT-BC155276  Bromus inermis Louella Bass 1980-8-4 s.n. Lassen Standish. Comment
  CHSC92831  Bromus japonicus Lowell Ahart; John Dittes 2005-6-1 11865 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
  UCD32672  Bromus japonicus Beecher Crampton 1954-7-6 2076 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  JEPS123451  Bromus marginatus Wilson Collison, Jaileen Merced 2015-8-12 CA 320 -146 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  RSA126867  Bromus marginatus G. A. Fischer, I. H. Johnson 1933-7-12 F 231 Lassen Patterson Flat. Lassen Forest. Comment
  CAS-BOT-BC162181  Bromus orcuttianus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49472 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC161417  Bromus tectorum John Thomas Howell 1977-6-22 s.n. Lassen Sierra Nevada. About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  CDA1862  Bromus tectorum A. A. Beetle 1941-6-28 2796 Lassen Rte. 36, 10 miles west of Chester. 0 Comment
  CHSC13497  Bromus tectorum J. Pitts 1972-6-22 244 Lassen 50 yds. n of Eagle Lake Biology Station. Comment
  JEPS107312  Bromus tectorum Lowell Ahart, John Dittes 2005-6-1 11909 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  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
  UC1131267  Bromus tectorum H. S. Yates 1936-8-12 6085 Lassen McKenzie Meadow 1524 Comment
  UC1131326  Bromus tectorum A. Simontacchi 1940-6-8 835 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  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
  UCD59851  Bromus tectorum L. Whitney 1933-8-8 s.n. Lassen Lassen National Forest. 1920 Comment
  UCD59875  Bromus tectorum R. N. Raynor 1940-4-16 s.n. Lassen Round Valley. Comment
  SEINET10515052  Bromus tectorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 522 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET4564906  Bromus tectorum F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CHSC99528  Calandrinia ciliata Lowell Ahart; John Dittes 2008-6-22 15030 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
  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
  CAS-BOT-BC80347  Calocedrus decurrens Ralph K. Gierisch 1968-7-12 3357 Lassen Lassen Forest, Hwy 36 1 mile east of Fredonyer Pass 1706 Comment
  SEINET8196128  Calochortus coeruleus C. G. Gulling 1905-1 1535 Lassen Big Meadows. Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  UC3429  Calochortus macrocarpus Milo S. Baker 1894-7-21 Lassen Eagle Lake 1524 Comment
  CAS-BOT-BC483438  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC483439  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  POM109600  Calochortus macrocarpus Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkins Ranch 1524 Comment
  UCD105297  Caltha leptosepala K. M. Meyer; A. Townesmith 2007-7-21 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A 21. 1920 Comment
  CHSC67062  Calyptridium umbellatum Willis Ball 1969-6-20 16 Lassen Found beside road on Dean's Ridge. 1950 Comment
  UC1136685  Calyptridium umbellatum A. Simontacchi 1940-5-17 733 Lassen 5.7 mi ssw of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 Comment
  CHSC6272  Camassia quamash subsp. breviflora J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek. 1584 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
  SFV17867  Camassia quamash subsp. quamash J. D. Dilley 1998-7-14 367 Lassen Sierra Nevada Along CA-44, 1 mile west of Bogard Work Center; 29 miles northwest of Susanville. 1707 Comment
  JEPS96126  Camelina microcarpa Vernon H. Oswald and Lowell Ahart 1996-6-24 7881 Lassen 2.5 mi s of Eagle Lake (0.5 mi e of Eagle Lake Road (A1), at ne corner of Papoose Meadows, (0.1 mi e of where Papoose Creek leaves the n end of meadow)); Modoc Plateau, Papoose Meadows 1636 Comment
  CHSC4969  Camissonia R. Carter 1967-6-23 540 Lassen Along rd to Murrer's Meadow. 1584 Comment
  POM38357  Camissonia andina Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  NY850975  Camissonia boothii subsp. alyssoides Mrs. C. C. Bruce 06 1898 2139 Lassen Shumway Comment
  NY850976  Camissonia boothii subsp. alyssoides W. W. Eggleston 1911-7-7 7176 Lassen Secret Valley 1330 Comment
  UCR183189  Camissonia boothii subsp. alyssoides Jim Andre, G. L. Clifton 1993-5-28 7710 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  UC180090  Camissonia contorta Milo S. Baker 1890-1 Lassen Milford Comment
  NY851343  Camissonia contorta LeDoux 1973-5-25 870 Lassen Collected 3 miles north of Milford on Hwy 395 at Honey Lake campgrounds Comment
  HSC42415  Camissonia tanacetifolia Barbara Kelly 1977-8-9 565 Lassen 14.3 mi. E of Madeline on the dirt road from Adin Comment
  CAS-BOT-BC160833  Camissonia tanacetifolia subsp. quadriperforata James Jokerst 1983-5-31 1787 Lassen Near Madeline Plains 1583 Comment
  CAS-BOT-BC160863  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-7-8 12505 Lassen Spalding's, Eagle Lake Comment
  JEPS121275  Camissonia tanacetifolia subsp. tanacetifolia Lowell Ahart, John Dittes 2013-7-22 18885 Lassen Man-made pond, about 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC37010  Capsella bursa-pastoris John Thomas Howell 1974-7-8 50514 Lassen Sierra Nevada. Susanville. 1295 Comment
  UC1137752  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  UC972184  Cardamine nuttallii Milo S. Baker 1952-5-23 12430 Lassen Highway 36 1/2 mi w Fredonyer Pass; w of Fredonyer Pass 1752 Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  UC142947  Carex angustata A. L. Hormay 1941-6-18 5 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 Comment
  UC2031877  Carex athrostachya Nick Otting and Dick Brainerd 2003-7-17 702 Lassen Cascade Mountains, Susan River, 2 air miles west of Susanville. Comment
  POM313130  Carex athrostachya H. L. Mason 1947-7-9 13300 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  CDA33034  Carex barbarae T. C. Fuller 1963-7-15 10892 Lassen South of road to Pittsville, 5.4 miles northwest of Little Valley. 0 Comment
  HSC95169  Carex cusickii Gordon Leppig 1998-7-12 952 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC113778  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highwy 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  POM80807  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CHSC33051  Carex douglasii J. P. Smith; John Sawyer 1971-5-23 4664 Lassen Along Calif. 139, 1 mi. south of Jct. with road to Thermo. Comment
  HSC66737  Carex douglasii J. P. Smith, J. O. Sawyer 1971-5-23 4664 Lassen Along Hwy. 139, 1 mi. S of jct. with road to Thermo Comment
  UC1776677  Carex douglasii G. Schoolcraft 1995-5-22 2486 Lassen East of Skedaddle Ranch 1554 Comment
  UC803  Carex douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3289 Lassen Honey Lake Valley Comment
  CAS-BOT-BC19780  Carex douglasii H. D. Ripley; R. C. Barneby 1943-6-14 5145 Lassen Hidden Valley, E of Susanville. 1584 Comment
  CAS-BOT-BC75502  Carex echinata var. ormantha Leo Whitney 1934-8-2 1967 Lassen Bridge Creek Camp. 1737 Comment
  CHSC89755  Carex filifolia var. erostrata L. P. Janeway 2004-6-26 8162 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  JEPS118277  Carex filifolia var. erostrata Lowell Ahart, John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest 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
  SEINET7558599 Image available Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  SEINET7558601 Image available Carex filifolia var. erostrata Richard Driscoll 1965-5-31 s.n. Lassen Lassen. Bogard Ranger Sta., Harvey Valley, NW of Susanvile. 1707 Comment
  CAS-BOT-BC22274  Carex hassei Ralph K. Gierisch 1968-7-12 3360 Lassen Hwy. 36 at Goodrich Creek. 1554 Comment
  UC1609196  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC61065  Carex heteroneura var. heteroneura Vernon H. Oswald; Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC60433  Carex lenticularis var. impressa Mary Ann Showers 1992-6-13 2545 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  HSC103598  Carex leporinella Thomas W. Nelson, Jane Nelson 1985-8-10 8012 Lassen Along north side of Silver Lake campground 1829 Comment
  CHSC96450  Carex limosa Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  JEPS97331  Carex limosa Vernon H. Oswald 1995-8-26 7217 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC2015854  Carex microptera Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4447 Lassen Lassen Volcanic National Park. Lassen Peak, above parking area. Comment
  CAS-BOT-BC32195  Carex multicaulis H. D. Ripley; R. C. Barneby 1943-6-14 5730 Lassen Fredonyer Pass 1676 Comment
  CHSC25908  Carex nebrascensis K. R. Stern 1967-4-24 2409 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  UC1142949  Carex nebrascensis A. L. Hormay 1941-6-18 7 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  HSC103614  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8005 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC119716  Carex nervina John Thomas Howell 1976-7-19 51989 Lassen On Gold Run Creek SW of Susanville. 1386 Comment
  CHSC58857  Carex pellita Vernon H. Oswald; Lowell Ahart 1992-7-16 5120 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  CHSC66738  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-8-1 8110 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC108016  Carex praegracilis Lowell Ahart; John Dittes 2011-6-20 17477 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  JEPS118273  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 17477 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC190401  Carex praegracilis M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CHSC118476  Carex praegracilis Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. Sandy Beach of Eagle Lake, ~1.6 air miles north of Spalding marina. 1559 Comment
  CHSC54424  Carex raynoldsii Vernon H. Oswald 1991-6-25 4695 Lassen Lassen Volcanic National Park. Butte Lake-Snag Lake Trail, just south of its junction with Butte Lake-Widow Lake Trail, in the northeast corner of the park. 1842 Comment
  JEPS28380  Carex raynoldsii George W. Gillett 1957-7-29 948 Lassen along trail between Butte Lake and Sang Lake; Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC118026  Carex rossii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49195 Lassen Elysian Valley NW of Janesville. 1325 Comment
  HSC48183  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19243 Lassen 2 mi. N of Westwood Comment
  HSC48338  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19244 Lassen 2 mi. N of Westwood Comment
  UC2031880  Carex subfusca Nick Otting 2003-7-17 695 Lassen Cascade Mountains, Susan River, 1/2 mile NE of Devil's Corral, 5 air miles west of Susanville. Comment
  CAS-BOT-BC116607  Carex subfusca Clare B. Hardham 1971-8-22 18383 Lassen Diamond Mountain streambed. 2133 Comment
  CAS-BOT-BC116613  Carex subfusca Hans Leschke 1958-8-17 1568 Lassen Reflexion Lake 1792 Comment
  CAS-BOT-BC116622  Carex subfusca W. B. Cooke; V. G. Cooke 1976-10-7 53192 Lassen Lassen Volcanic National Park, Butte Lake. 1841 Comment
  HSC95279  Carex vesicaria Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 693 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95286  Carex vesicaria Gordon Leppig 1998-8-17 1039 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
  RSA275376  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  RSA517387  Carex whitneyi Leland S. Smith 1922-7-23 75 Lassen Lassen National Forest. Comment
  RSA220022  Carex whitneyi Beecher Crampton 1964-6-26 s.n. Lassen Ca. 4 miles SSE Bogard Ranger Station, Lassen National Forest. Comment
  CAS-BOT-BC248970  Castilleja Philip A. Munz 1947-5-19 11866 Lassen 27.7 miles south of Ravendale, on Highway 395 1310 Comment
  JEPS23795  Castilleja angustifolia Rimo Bacigalupi with Lincoln Constance 1959-7-16 7140 Lassen 0.25 mi s U.S. Hwy. 395 junction with road Smoke Creek (beside U.S. Hwy 395) 1341 Comment
  JEPS94129  Castilleja angustifolia Vernon H. Oswald and Lowell Ahart 1998-5-22 9108 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  UC585182  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1741 Lassen above Red Rock 1432 Comment
  CAS-BOT-BC249340  Castilleja applegatei Gary Schoolcraft 1983-7-19 1097 Lassen S. slopes of Fredonyer Pk. 33-12-27 2255 Comment
  CAS-BOT-BC249614  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-21 44 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  CHSC7751  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-3 106 Lassen 28.4 mi. N.E. of Susanville. 1554 Comment
  UC1012183  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Susanville; Route 36 1371 Comment
  UC1136982  Castilleja applegatei subsp. pinetorum George A. Fischer, Irwin H. Johnson 1933-7-14 F- 259 Lassen Grass Valley; Lassen National Forest, Forest and Range Experimental Statio 1783 Comment
  RSA523923  Castilleja arachnoidea Barbara J. Ertter 1988-7-25 7861 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  CHSC60921  Castilleja campestris subsp. campestris Vernon H. Oswald; Lowell Ahart 1993-7-8 5644 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 22N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  JEPS62838  Castilleja campestris subsp. campestris John Weiler 1970-7-6 70188 Lassen 3.6 mi s Madeline (along Highway 395) 1371 Comment
  JEPS87488  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  UC1484795  Castilleja campestris subsp. campestris Noel H. Holmgren and Patricia K. Holmgren 1978-6-10 8903 Lassen 9 mi ene Termo (and 8 air distance); Madeline Plains, Coyote Flat 1630 Comment
  SEINET10457537  Castilleja disticha Morris 1973-5-25 MORRIS 221 Lassen Collected in an area of sugar pine, libcedrus, and yellow pine. 2.5 Mi n of jct 36 and hwy 44. Comment
  JEPS118272  Castilleja lacera Lowell Ahart, John Dittes 2011-6-20 17500 Lassen In ditch along the north side of the road, about 40 yards east of the stream about 40 yards east 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
  JEPS126522  Castilleja lacera Lowell Ahart, John Dittes 2016-6-7 20993 Lassen West of pond, 110 yards east of the Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS126527  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. Comment
  JEPS80676  Castilleja lacera L. R. Heckard with T. I. Chuang 1981-6-10 5528 Lassen 2.3 mi w Nubieber (along Route 299) 1341 Comment
  JEPS85915  Castilleja lemmonii L. R. Heckard with R. Bacigalupi 1980-6-12 5260 Lassen ne of Westwood (near golf course) 1554 Comment
  CHSC1714  Castilleja linariifolia 1944-7-5 Lassen Bogard. 1722 Comment
  CHSC6268  Castilleja linariifolia P. Balch 1955-7-21 Lassen Willow Creek, Eagle Lake. 1463 Comment
  CAS-BOT-BC244886  Castilleja miniata Louella Bass 1973-6-17 116 Lassen Elysian Valley. Plants of the Sierra Nevada 1325 Comment
  RSA18167  Castilleja miniata Carl B. Wolf 1929-9-1 3778 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. 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
  CHSC12962  Castilleja pilosa K. R. Stern 1974-6-26 5871 Lassen Open sagebrush scrub adjacent to Pine Creek, 3.7 mi n of intersection between County Rd. A-21 to Westwood and Hwy. 44, on e side of Hwy. 44. Comment
  JEPS3805  Castilleja pilosa G. S. Crew and C. S. Robinson 1927-6-25 35 Lassen near Westwood Jct. (sw Lassen County); Norval Flat 1747 Comment
  CHSC64896  Castilleja tenuis Vernon Oswald 1995-6-26 6922 Lassen Modoc Plateau, Northern Juniper Woodland. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC99525  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
  JEPS107313  Castilleja tenuis Lowell Ahart, John Dittes 2005-6-1 11902 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
  JEPS121270  Castilleja tenuis Lowell Ahart 2013-7-22 18840 Lassen W margin of duck field, about 30 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA0037002  Castilleja tenuis Lowell A. Ahart, John Dittes 2008-6-19 14874 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1012485  Castilleja tenuis Francis W. Pennell 1940-6-7 25727 Lassen 8 mi e Nubieber (Route 299) 1310 Comment
  UC1483853  Castilleja tenuis G. Schoolcraft 1980-7-16 316 Lassen near Nelson Corral Reservoir 1804 Comment
  CHSC80621  Caulanthus major var. nevadensis Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolscraft 2001-6-2 10036 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountin from the end of a $WD road. 1828 Comment
  CAS-BOT-BC52047  Ceanothus prostratus A. M. Vollmer; L. Beane 1953-7-1 88 Lassen Along Halls Flat Road, beinning 6 miles West of Susanville to McArthur 1554 Comment
  UC1736108  Ceanothus prostratus var. prostratus Dean W. Taylor 1974-7-13 4067 Lassen Lassen National Forest, Thousand Lakes Wilderness, vicinity of Magee Pk, T33N R3E SE1/4 Sect. 27 2484 Comment
  CHSC6250  Ceanothus velutinus L. Harman 1946-6-23 Lassen Roop mountain. Eagle Lake. 2133 Comment
  CHSC6287  Ceanothus velutinus R. Clicquennoi 1967-7-1 37 Lassen Four miles s of Eagle Lake Biology Station off Gallatin Beach Road. 1554 Comment
  CAS-BOT-BC52439  Ceanothus velutinus var. velutinus Jeanne Janish; Carl Janish 1938-9-4 s.n. Lassen above upper Twin Lake, Lassen National Park 2042 Comment
  HSC63932  Ceanothus velutinus var. velutinus Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak near summit, N face 2424 Comment
  RSA747546  Ceanothus velutinus var. velutinus K. M. Meyer, A. Townesmith 2007-7-23 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  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
  CAS-BOT-BC272110  Centaurea cyanus Margaret Williams; Steven Williams 1974-7-26 74 -L-9 Lassen Near Hallelujah Junction west of Why 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  CAS-BOT-BC276999  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  CAS-BOT-BC277000  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  UCD130020  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen east side of Highway 395 to Madelaine, 1.6 mile north of Termo. Comment
  CDA36156  Centaurea maculosa CDFA Staff Jul 1998 Lassen Susanville. 0 Comment
  CHSC71853  Centaurea squarrosa Vernon H. Oswald; Lowell Ahart 1998-9-8 9586 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  UC1717201  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen w. side of Hwy 395, 1.7 mi. s. of Doyle Comment
  RSA153397  Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley Comment
  RSA186838  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville Comment
  UCD130126  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley. Comment
  JEPS84967  Centaurium exaltatum Barbara Ertter 1987-7-24 7305 Lassen ca 0.75 mi ene Beckwourth Pass (at the end of old crumbling paved road) 1524 Comment
  SEINET7379749 Image available Centromadia pungens M. J. Williams, G. Smith 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  CAS-BOT-BC388199  Cerastium fontanum subsp. vulgare John Thomas Howell 1976-7-19 51990 Lassen On Gold Run Creek southwest of Susanville 1386 Comment
  JEPS122364  Chaenactis douglasii Jaycee Leonard, Mike Dolan 2012-8-3 CA 320 -120 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left onto Cold Springs road. Collection is at top of Cold Springs mountain along ridge Comment
  SDSU6452  Chaenactis douglasii D. F. Howe 1964-7-31 3904 Lassen Modoc National Forest, 10.2 miles from entrance of the forest. 1768 Comment
  CHSC21172  Chamaebatiaria millefolium M. S. Taylor 1975-5-4 220 Lassen Ca. 1/4 mi e of Eagle Lake Field Station, ca. 13 mi ne of Susanville. Comment
  UC26091  Chamaesaracha nana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC63927  Chamaesaracha nana Teresa Prendusi 1980-5-30 1109 Lassen Mapes Spring, 11 mi. W of 395 and 19 mi. S Ravendale, near spring outflow 1585 Comment
  CHSC60898  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1993-7-8 5660 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Between the railroad and the lake. 1709 Comment
  SEINET9445226  Chamaesyce serpyllifolia M. J. Williams 1974-7-29 74 -L-47 Lassen S of Hwy 70, 2 miles W of Hallelujah Junction. 1494 Comment
  JEPS128409  Chamerion angustifolium subsp. circumvagum Catherine Bauer with Ellen Bauer Benson 2017-8-16 17 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC62593  Cheilanthes intertexta Baker and Nutting 1894-7-3 Lassen Dixey Mts Comment
  CDA3039  Chenopodium botrys T. C. Fuller 1964-10-7 12693 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber. 0 Comment
  POM312473  Chenopodium chenopodioides Verne Grant, Irving Schneider 1947-9-5 8368 Lassen NW shore of Eagle Lake, by Sam Webb s place (Spaulding). Comment
  UC1746002  Chenopodium desiccatum Annetta M. Carter 1945-9-30 1721 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
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Jul 20 2019
  UCD54572  Chenopodium glaucum Ellen Dean; Dawn Cunningham 2005-10-25 2755 Lassen E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond. 1248 Comment
  CAS-BOT-BC426318  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  CHSC29910  Chenopodium nitens Robin L. Ondricek 1978-7-15 97 Lassen In the middle of the dry section of Lower Dry Lake. 1645 Comment
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Nov 1 2014
  UC1557992  Chimaphila menziesii Barbara Ertter 1988-7-25 7872 Lassen ca. 10 airmiles due s. Susanville (ridge of Diamond Mts., ca. 1.5 mi. e. of Diamond Peak); Diamond Mts. 2255 Comment
  UC1483847  Chimaphila umbellata G. Schoolcraft 1980-7-29 343 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  CAS-BOT-BC39672  Chorispora tenella Gary Schoolcraft 1982-3-24 624 Lassen Lower end of Amedee Canyon. 1280 Comment
  UC1135263  Chrysolepis sempervirens A. Simontacchi 1940-8-8 938 Lassen 4.2 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1889 Comment
  SEINET8973626  Chrysolepis sempervirens W. Priest 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  CAS-BOT-BC140658  Chrysothamnus humilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50663 Lassen Summit ridge of Diamond Mt. 2346 Comment
  UC773961  Chrysothamnus humilis L. R. Short and J. Warren 1936-8-17 S- 495 Lassen Burgess Spring Experiment Range Lassen Forest 1760 Comment
  RSA79230  Chrysothamnus nauseosus subsp. albicaulis E. K. Balls, Percy C. Everett 1952-10-10 18135 Lassen 4 miles east of Susan River Bridge, Hwy. 36 1372 Comment
  CAS-BOT-BC105904  Chrysothamnus viscidiflorus subsp. viscidiflorus Elmer I. Applegate 1897-6-3 858 Lassen South end of Madeline Plains Comment
  OBI5967  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 mi from Bieber on the road to Alturas 1268 Comment
  UC747217  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Thomas Robbins 1945-10-7 2154 Lassen 2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  SD43500  Chylismia claviformis subsp. cruciformis Philip A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravensdale on Highway 395. 1341 Comment
  UC1537660  Chylismia claviformis subsp. cruciformis Gordon H. True Jr. 1937-7-10 791 Lassen mesa Skedaddle 1493 Comment
  UC1602277  Chylismia claviformis subsp. cruciformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3399 Lassen Amedee Honey Lake Valley Comment
  SEINET10725178  Cichorium intybus Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 133 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  POM352119  Cichorium intybus George Willet 1935-6-28 s.n. Lassen Susanville Comment
  CDA38207  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
  UCD159568  Cirsium D. S. Park 2011-6-27 305 Lassen Near Antelope Mt. 1999 Comment
  CHSC23554  Cirsium andersonii W. O. Baum 1971-7-6 49 Lassen Slope of Gallatin Peak. 1981 Comment
  UC1119176  Cirsium andersonii H. P. Hagge 1929-9-14 32 Lassen Logan Mtn. Eagle Lake Quad. 1828 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
  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
  CAS-BOT-BC278004  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen Hwy. 395, 7 miles north/road to Karlo Comment
  CAS-BOT-BC278090  Cirsium douglasii var. breweri Hans Leschke 1960-9-8 1803 Lassen Lassen Volcanic National Park. Little Hot Springs Valley 2225 Comment
  RSA0070635  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 Lassen North of the road, 0.4 km east of campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. Comment
  CAS-BOT-BC285517  Cirsium occidentale var. candidissimum Blanche Clear 1940-7-30 s.n. Lassen Between Manzanita Lake and Burney Falls. On highway Comment
  CDA1525  Cirsium ochrocentrum T. C. Fuller 1980-8-5 20311 Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  RSA186826  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  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
  UC74064  Cirsium scariosum J. Burtt Davy Jun 14 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CDA20242  Cirsium undulatum G. D. Barbe 1984-8-2 4186 Lassen Madeline Plains; Just e of Westside Rd, 3 mi no f Termo-Grasshopper Rd., Madeline Plains, along e base of Dry Valley Ridge. 1615 Comment
  CAS-BOT-BC285731  Cirsium vulgare Margaret Williams 1974-7-27 74 -L-63 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC169804  Cistanthe rosea H. D. Ripley; R. C. Barneby 1943-6-18 5464 Lassen Smoke Creek, NE of Viewland 1402 Comment
  CAS-BOT-BC162636  Clarkia John Thomas Howell 1974-7-30 s.n. Lassen Diamond Mountain - Sierra Nevada 2286 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
  UCR244103  Clarkia lassenensis Jim Andre, G. L. Clifton 1993-6-9 19699 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  JEPS90014  Clarkia purpurea subsp. quadrivulnera Dean Wm. Taylor with Robert A. Price 1988-6-4 9770 Lassen 6 mi e of MacArthur (Fall River Valley along Highway 299 at crossing of Frazer Creek, Pit River Watershed); Fall River Valley, Highway 299 1036 Comment
  CAS-BOT-BC164864  Clarkia rhomboidea A. M. Vollmer; L. Beane 1953-7-1 35 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC59759  Clarkia rhomboidea Mary Meyer 1980-8-5 Lassen 2148 Comment
  CHSC6187  Clarkia rhomboidea W. Vinyard 1946-6-17 Lassen Mt. Fredonyer summit. Eagle Lake. 2421 Comment
  CHSC66394  Clarkia rhomboidea Vernon H. Oswald; Lowell Ahart 1996-6-17 7780 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
  JEPS43672  Clarkia rhomboidea Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  JEPS96107  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1996-6-17 7780 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side Hwy. 36 between trail & hwy. spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  CHSC29927  Clarkia stellata Robin L. Ondricek 1978-6-14 57 Lassen 1.8 mi E of Coleman Rd. on Lassen Co. Rd. A1. 1950 Comment
  RSA122141  Clarkia stellata L. R. Short 1936-6-23 S- 448 Lassen Burgess Spring Exp. Range, Lassen forest 1799 Comment
  RSA46419  Clarkia stellata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin s Ranch. 1829 Comment
  CAS-BOT-BC440042  Claytonia perfoliata subsp. perfoliata Louella Bass 1973-4-23 25 Lassen Elysian Valley. 1325 Comment
  CHSC68621  Cleome platycarpa Vernon H. Oswald; Lowell Ahart 1997-5-7 8403 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. Growing in disturbed roadside gravel. 1420 Comment
  NY222755  Cleome platycarpa H. D. D. Ripley 1943-6-15 5757 Lassen Near Viewland. 1310.6 Comment
  NY222826  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen East end of Skedaddle Mtns. near stateline. Comment
  JEPS42689  Cleomella parviflora Mrs. R. M. Austin and Mrs. C. C. Bruce Jun 1898 2364 a Lassen Shumway Comment
  JEPS48621  Cleomella plocasperma Hilda W. Grinnell 1934-6-3 Lassen Amedee 1219 Comment
  NY242079  Cleomella plocasperma R. F. Hoover 1940-9-29 4642 Lassen Litchfield. Comment
  NY242228  Cleomella plocasperma A. Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 Comment
  RSA294659  Cleomella plocasperma A. Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  CAS-BOT-BC423222  Cleomella plocasperma Luella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  HSC68800  Collinsia grandiflora Gary Schoolcraft 1980-7-15 312 Lassen N ende of Nelson Corral Reservoir 1805 Comment
  CHSC116917  Collinsia parviflora J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CHSC7757  Collinsia parviflora Beverley J. Wise 1969-4-26 102 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  CHSC80278  Collinsia parviflora Jeanne Boze 1981-6-13 112 Lassen Northeast base of Gallatin Peak. 1950 Comment
  UC1143037  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1737 Comment
  HSC63776  Collinsia parviflora Teresa Prendusi 1980-4-30 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  CHSC4860  Collomia grandiflora R. Carter 1967-7-13 585 Lassen On s side of rd. On the rd to Eagle Lake Biology Station and Willow Creek. 1584 Comment
  RSA523347  Collomia grandiflora G. H. True 1938-7-9 906 Lassen Near Horse Lake 1524 Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  CHSC5005  Collomia tinctoria K. C. Newman 1967-7-2 59 Lassen Collected about 50 yds. NE of ELBS just beyond the men's dorm. 1554 Comment
  JEPS28714  Collomia tinctoria George W. Gillett 1957-7-29 949 Lassen along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  UC1137780  Collomia tinctoria August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen Forest and Range Experiment Station/National Forest 2133 Comment
  CHSC7713  Convolvulus arvensis Beverley J. Wise 1969-6-4 33 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  CAS-BOT-BC286113  Conyza canadensis John Thomas Howell 1974-7-10 50532 Lassen Elysian Valley 1325 Comment
  POM33281  Conyza canadensis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC762620  Cordylanthus ramosus R. F. Hoover 1940-10-5 4678 Lassen Secret Valley Comment
  CHSC118478  Corydalis aurea Allison Sanger 2015-5-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Outlet of Papoose Meadows, above rock weir blocking outlet. 1624 Comment
  CAS-BOT-BC401848  Corydalis caseana subsp. caseana John Thomas Howell; Gordon H. True 1973-8-1 50237 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  CAS-BOT-BC290390  Crepis acuminata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49462 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC93564  Crepis acuminata Lowell Ahart; John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  JEPS126487  Crepis acuminata Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -040 Lassen Turn right at sign for Ravendale on 395, and follow Horse Lake Road past the ranch house and around the dried up lake for about 17 miles. Comment
  UC91865  Crepis acuminata T. S. Brandegee 1892-6-22 Lassen Honey Lake 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
  SEINET10474584  Crepis bakeri subsp. cusickii Mary Susan Taylor 1982-5-29 Taylor 4562 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  UC91874  Crepis intermedia T. S. Brandegee 1892-7-26 Lassen near Honey Lake; Milford Comment
  CAS-BOT-BC291547  Crepis intermedia Margaret Williams 1974-8-4 74 -L-76 Lassen Near Hallelujah Junction west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  JEPS87521  Crepis modocensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5614 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  UC581246  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2298 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC773982  Crepis monticola L. R. Short and J. Warren 1936-6-23 S- 444 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1839 Comment
  UC540867  Crepis occidentalis David D. Keck and J. Clausen 1935-6-24 3752 Lassen 2 mi s Ravendale 1463 Comment
  UC581290  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2302 Lassen w Milford (crest or range head of ridge); Stony Ridge 1930 Comment
  UC581316  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2221 Lassen 6 mi s Ravensdale 1676 Comment
  SEINET2142793 Image available Crepis occidentalis subsp. occidentalis Noel H. Holmgren, Holmgren, Patricia K. 1978-6-11 8929 Lassen upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale 1700 Comment
  POM70805  Cressa truxillensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  RSA647827  Cryptantha Marion P. Harthill 1971-6-20 206 Lassen Susanville 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
  CHSC25315  Cryptantha circumscissa Pauleen Broyles 1977-4-1 168 Lassen Roadway along Skedaddle Creek ca 8 km ene of Herlong. 1350 Comment
  CHSC7765  Cryptantha circumscissa Beverly J. Wise 1969-5-18 77 Lassen 17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  JEPS67504  Cryptantha circumscissa W. L. Jepson 1918-8-2 7761 Lassen Beckwith Pass 1463 Comment
  RSA716061  Cryptantha circumscissa L. Ahart, John Dittes 2005-6-1 11890 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
  UCD54568  Cryptantha circumscissa Ellen Dean; Dawn Cunningham 2005-10-25 2751 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 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
  JEPS124571 Image available Cryptantha intermedia var. grandiflora 1964-7-1 67 Lassen Collected 17.6 mi. north of Susanville on highway 139 near ditch. about 4 meters on west side of road from pavement. Comment
  UC79293  Cryptantha simulans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  POM72228  Cryptantha torreyana Marcus E. Jones 1897-6-19 6862 Lassen Chat 1616 Comment
  UC1587053  Cryptantha torreyana G. Schoolcraft 1991-7-30 2193 Lassen e side Widow Mountain 1889 Comment
  SDSU20527  Cryptantha torreyana var. torreyana Nuri Benet-Pierce, John P. Pierce 2012-7-14 529 Lassen Diamond Mountain 2054 Comment
  CHSC27582  Cryptantha watsonii N. E. Heiken 1978-6-27 54 Lassen SE end of Eagle Lake, near Eagle Lake Field Station. 1554 Comment
  CHSC6214  Cryptogramma acrostichoides P. Balch 1955-6-1 Lassen Silver Lake, Eagle Lake. 1981 Comment
  UC1134216  Cupressus bakeri D. Dunning 1935-11-7 Lassen 2 mi E of Burney Spring 1463 Comment
  UCD126237  Cuscuta approximata Lee Smith 1975-9-4 s.n. Lassen Al Blickenstaff Farm, near Honey Lake, 3 miles south of Janesville. Comment
  CDA39916  Cuscuta californica var. breviflora T. C. Fuller 1963-7-16 10922 Lassen Hwy 395 to Ravendale, 10 miles north of Litchfield. 0 Comment
  OBI75868  Cuscuta occidentalis Anthony Baniaga 2011-8-9 492 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
  JEPS96081  Cyperus squarrosus Vernon H. Oswald and Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir s.w. Westwood (edge of reservoir between R.R. and Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  CAS-BOT-BC70564  Cystopteris fragilis Louella Bass 1973-6-18 EU- 126 Lassen Elysian Valley 1325 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
  RSA324194  Dalea ornata A. Tiehm, Raymond Evans, James Young 1984-6-7 8592 Lassen Flats n the northwest side of Shaffer Mountain. 7.5 airmiles NNW of Litchfield. 1372 Comment
  JEPS32210  Damasonium californicum Jos. Grinnell 1928-6-26 Lassen Poison Lake Lassen Peak Region, Poison Lake 1737 Comment
  UC1609111  Damasonium californicum Vernon H. Oswald and Lowell Ahart 1993-6-14 5507 Lassen ca. 8 mi. (air) w. of Eagle Lake (Lassen A21 (32N02) 2.1 mi. e. of Lassen 105 (32N28Y), s.e. side of Pine Creek Valley); Pine Creek Valley 1728 Comment
  POM115072  Danthonia californica Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1024914  Danthonia californica Leo Whitney 1935-6-25 3368 Lassen near Camp 10 <of?> Fruit Grower's Supply Company; Lassen National Forest Comment
  CAS-BOT-BC192328  Danthonia unispicata John Thomas Howell 1977-6-22 52406 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  CAS-BOT-BC192329  Danthonia unispicata Ralph K. Gierisch 1968-7-11 3353 Lassen Lassen National Forest. Harvey Valley - Dixie Spr. 1706 Comment
  CAS-BOT-BC192330  Danthonia unispicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50691 Lassen South and southeast of Diamond Mt. 2286 Comment
  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
  CAS-BOT-BC291777  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  CHSC64806  Delphinium andersonii Vernon H. Oswald 1995-5-24 6784 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. On the s side of the road. 1219 Comment
  UC1136878  Delphinium andersonii L. R. Short 1936-5-12 S- 347 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1834 Comment
  UC1583981  Delphinium andersonii G. Schoolcraft 1990-6-12 2090 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC1924575  Delphinium andersonii Debra Valov 2006-5-29 2006026 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1275 Comment
  UC619271  Delphinium andersonii J. and H. W. Grinnell 1938-6-13 1098 Lassen sage flat near Ravensdale 1554 Comment
  RSA0005299  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CHSC36435  Delphinium depauperatum Dave Leuck 1981-6-16 19 Lassen Meadow near turnoff to Caribou Wilderness Area on Hwy. 44. Comment
  CDA24233  Delphinium depauperatum T. C. Fuller 1963-6-1 10636 Lassen Road east to Willow Springs Campground, 1.9 miles east of Pittville-Susanville Road, 11.2 road miles south of Pittville. 0 Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 Comment
  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
  UC1143008  Delphinium nudicaule August L. Hormay 1934-5-11 Lassen 4 mi nw Hall's Flat; Lassen National Forest 1676 Comment
  CAS-BOT-BC9944  Delphinium nudicaule Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass Comment
  RSA398661  Delphinium nudicaule Christopher Davidson 1975-6-6 2722 Lassen 3.9 miles from jct of county roads 204 and 205 on road 204 along Gold Run Creek, SW of Susanville. 1395 Comment
  CAS-BOT-BC116051  Delphinium nuttallianum Albert Michael Vollmer; L. Beane 1953-7-1 63 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC36459  Delphinium nuttallianum Susan H. Euing 1982-6-4 13 Lassen Ca. 1/2 mi e of forest station rd 5.16 heading toward Murrers Upper Meadow. Comment
  CHSC8562  Delphinium nuttallianum K. Stern 1967-7-1 Lassen Vic. Silver Lake. Comment
  CAS-BOT-BC116043  Delphinium nuttallianum Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass. Comment
  HSC27055  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  JEPS103186  Delphinium stachydeum G. Schoolcraft 2000-7-5 2910 Lassen On Shinn Mountain above Spanish Spring Reservoir 2011 Comment
  NY492431  Delphinium stachydeum G. Schoolcraft 1983-8-3 1123 Lassen About 2 miles south of Holbrook Canyon 1828.8 Comment
  RSA0011561  Deschampsia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46991 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC194259  Deschampsia cespitosa subsp. cespitosa Ray Hanson 1954-8-23 s.n. Lassen Near Jackey Lake 2112 Comment
  JEPS28061  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen 100 yds. above lake near s. shore Snag Lake; Lassen Volcanic Nat'l Park, Snag Lake 1850 Comment
  CAS-BOT-BC192741  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49499 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC91297  Deschampsia danthonioides Lowell Ahart; John Dittes 2005-6-1 11913 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  HSC69076  Deschampsia danthonioides Gary Schoolcraft 1980-7-16 313 Lassen Near Nelson Corral Reservoir. 1805 Comment
  UC1024890  Deschampsia danthonioides Leo Whitney 1935-5-27 3124 Lassen Bieber Comment
  UCD62833  Deschampsia danthonioides Malcolm A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles N of Madeline. Comment
  SEINET10524169  Deschampsia danthonioides R. Ondricek 1978-7-15 Ondricek 102 Lassen In dried mud where the spring arises above the dam at Murrers Upper Meadow. T32N, R11E, e edge of Sec. 26. in the Fredonyer Peak Quadrangle, 15'. 1548 Comment
  JEPS28059  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Widow Lake 2072 Comment
  UC1024651  Deschampsia elongata Leo Whitney 1933-8-3 2203 Lassen ca. 8 mi. n.w. Eagle Lake (Slate Creek); Lassen Nat'l Forest, Slate Creek 1920 Comment
  CHSC4784  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected outside cafeteria, N side, 15 yds. from building. Eagle Lake Biology Station. 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
  CHSC13943  Descurainia sophia M. S. Taylor 1974-6-20 258 Lassen Ca. 100 yds ne of Eagle Lake Field Station, ca. 1 ft e of Whitehead Rd, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC57356  Descurainia sophia B. G. Clark 1987-4-15 22 Lassen Lassen or Inyo counties. Top of knoll 1/4 mi sw of Lassen College adjacent and west of hwy 139. Comment
  JEPS114350  Descurainia sophia Lowell Ahart, John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SD8289  Dicentra formosa Mrs. R. M. Austin Aug 1882 Lassen Comment
  CAS-BOT-BC500985  Dichelostemma multiflorum Ella Dales Cantelow 1935-6-8 s. n. Lassen 13 mi. w. of Bieber Comment
  CAS-BOT-BC292258  Dieteria canescens Clare B. Hardham 1969-8-28 17430 Lassen West of Janesville Comment
  CAS-BOT-BC292259  Dieteria canescens John Thomas Howell 1974-7-8 50470 Lassen Susanville 1295 Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  CAS-BOT-BC299809  Dieteria canescens var. canescens G. Schoolcraft 1988-8-24 1858 Lassen 16 miles east of Adin 1645 Comment
  SEINET5709536 Image available Dieteria canescens var. canescens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7711 Lassen Willow Creek. Collected along Forest Road 37N04, off of CA 139.; Willow Creek 1575 Comment
  UC1119608  Dieteria canescens var. shastensis H. S. Yates 1936-8-11 6077 Lassen near Johnstonville; Susanville Quad. Comment
  UC86846  Dieteria canescens var. shastensis T. S. Brandegee Lassen Comment
  UC86850  Dieteria canescens var. shastensis Wm. M. Canby 1897-9-1 138 Lassen Mt. Shasta Comment
  CAS-BOT-BC153677  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CAS-BOT-BC153681  Diplacus mephiticus L. G. Bennett 1967-6-23 21 Lassen Eagle Lake Biological Station Grounds 1554 Comment
  UC60743  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  CHSC36450  Dodecatheon alpinum Susan H. Euing 1982-6-4 4 Lassen Murrers Upper Meadow. Comment
  JEPS87428  Dodecatheon conjugens Vernon H. Oswald and Lowell Ahart 1993-5-12 5381 Lassen Forest Rd. 32N08 to Crater Lake 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, edge of meadowy opening along creek); Pine Creek 1737 Comment
  SEINET8561548  Dodecatheon conjugens M. J. Williams 1969-5-24 s.n. Lassen Ca 0.5 mile N of Bogart Ranger Station. Comment
  CHSC6234  Dodecatheon jeffreyi M. West 1946-6-20 Lassen Meadow above Grasshopper Valley. 1828 Comment
  CHSC6281  Dodecatheon pulchellum B. Anthony 1967-7-14 277 Lassen One mi e of Silver Lake. 1950 Comment
  UC1137648  Dodecatheon pulchellum A. Simontacchi 1940-5-10 695 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  JEPS14618  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (forest adjacent to State Highway 299); Lassen National Forest 1219 Comment
  UC1229824  Downingia bacigalupii John Weiler 1959-4-22 59203 Lassen 11.1 mi se Eagle Lake (along county highway A-1) Comment
  UC2047850  Downingia bacigalupii Debra Valov 2016-6-21 1296 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; 100 m up private driveway; in dry vernal pool/ditch. Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  CHSC23491  Downingia bicornuta K. R. Stern 1974-6-26 5855 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  CHSC30606  Downingia bicornuta T. M. Lane 1975-6-23 28 Lassen 50 m n of spring headwaters of Willow Cr; 3.2 km ese of Eagle Lake Field Station; 22.4 km n of Susanville. 1589 Comment
  JEPS22793  Downingia bicornuta var. bicornuta August L. Hormay 1934-5-15 Lassen 1 mi ne Halls Flat Railroad Station (on the Keddie-Nubieber (freight) branch of the W.P.R.R.) 1554 Comment
  UC1143175  Downingia bicornuta var. bicornuta Robert W. Gardner 1937-6-26 G- 24 Lassen Poison Lake Halls Flat Quad. 1706 Comment
  UC803945  Downingia bicornuta var. bicornuta G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4005 Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  JEPS108488  Downingia bicornuta var. bicornuta Lisa Schultheis 1996-6-28 308 -96 Lassen Between Bieber and Adin. Corner of Finley Rd. and Rt. 299. Comment
  JEPS108509  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 223 -95 Lassen Large vernal pool W of Champs Flat (W of Eagle Lake). Corner of 33N56Y and 33N06. Comment
  JEPS108510  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-28 232 -95 Lassen Between Beiber and Adin; SE corner of Rt. 299 and Finley Rd. Comment
  JEPS23858  Downingia insignis Peter H. Raven 1958-6-17 13282 Lassen 1.9 mi s Ravendale (along U.S. Highway 295) Comment
  JEPS3751  Downingia insignis Helen-Mar Wheeler 1952-7-11 Lassen s of Madeline Comment
  RSA298985  Downingia insignis Helen-Mar Wheeler 1952-7-11 s.n. Lassen South of Madeline. Comment
  RSA293375  Downingia insignis Reino Alava 1957-7-5 1144 Lassen Along Highway 395, 10 miles N of Madeline. Comment
  CAS-BOT-BC41370  Draba verna M. S. Taylor 1982-5-7 4428 Lassen Reno Junction on Highway 70 just east of Beckwourth Pass. 1524 Comment
  CHSC108018  Draba verna var. aestivalis Lowell Ahart; John Dittes 2011-6-20 17489 Lassen About 3 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
  CHSC61140  Draba verna var. aestivalis Vernon H. Oswald; Lowell Ahart 1993-5-12 5391 Lassen Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road. 1652 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
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CHSC112423  Elatine Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18752 Lassen Plants near pond, about 80 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121283  Elatine Lowell Ahart, John Dittes 2013-7-22 18882 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  JEPS121282  Elatine californica Lowell Ahart, John Dittes 2013-7-22 18881 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA252429  Elatine californica R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39136 Lassen Said Valley Reservoir. 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
  RSA252456  Elatine gracilis R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39135 Lassen Said Valley Reservoir. Comment
  UC1101532  Elatine triandra Verne Grant and Irving Schneider 1947-8-1 8223 Lassen w end Section 19 (irrigation ditch running sw into State Fish and Game nesting area); Madelaine Plain Comment
  CAS-BOT-BC113618  Eleocharis acicularis George Wilson Gillett 1957-7-29 952 Lassen Mud flats along shore of Snag Lake, near iast inlet. 1850 Comment
  CAS-BOT-BC113619  Eleocharis acicularis George Wilson Gillett 1957-9-4 1128 Lassen Widow Lake. East margin of lower lake, near inlet; in drying mud. 2072 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 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
  CAS-BOT-BC113361  Eleocharis engelmannii James D. Jokerst 1983-7-23 1873 Lassen Grasshopper Valley Quad, near Madeline Plains. 1614 Comment
  CHSC112798  Eleocharis macrostachya Lowell Ahart; John Dittes 2013-7-22 18848 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117286  Eleocharis palustris Lowell Ahart; John Dittes 2016-7-15 21215 Lassen About 300b yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) mortheast of Bieber, Big Valley. 1261 Comment
  JEPS127217  Eleocharis palustris Lowell Ahart, John Dittes 2016-7-15 21215 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC113202  Eleocharis parishii R. F. Thorne; C. W. Tilforth 1969-9-6 39258 Lassen Sandy flats along Long Valley Creek, ca. 14 mi SE of Milford. 1310 Comment
  CHSC96438  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95170  Eleocharis suksdorfiana Gordon Leppig 1998-8-17 1045 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95334  Eleocharis suksdorfiana Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 515 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC7692  Elymus Beverly J. Wise 1969-5-23 123 Lassen 35 miles SE of Susanville on Lassen County Road 320. 1249 Comment
  UC1031373  Elymus X saundersii Leo Whitney 1935-7-31 3588 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UCD62904  Elymus X saundersii Lester J. Berry 1960-7-8 Lassen Burgess Springs Road, floor of Harvey Valley, ca. 7 miles S of Black's Mtn. Exper. Station, USDA. Comment
  CHSC112467  Elymus caput-medusae Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18749 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
  CHSC13594  Elymus cinereus J. Pitts 1972-6-23 270 Lassen 300 yds. ne of Eagle Lake Field Station. Comment
  CAS-BOT-BC227482  Elymus elymoides John Thomas Howell; Gordon H. True 1973-8-1 50197 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  CAS-BOT-BC227491  Elymus elymoides G. Schoolcraft 1989-6-19 1917 Lassen Ash Valley RNA/ACEC Comment
  SEINET8512804  Elymus elymoides A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1085 Lassen Costantia Allotment, W of Peterson's. 1374 Comment
  UCD61485  Elymus elymoides Beecher Crampton 1954-7-6 2075 Lassen Along US Hwy 395, 15 miles south of Ravendale. 1676 Comment
  UCD61553  Elymus elymoides A. A. Beetle 1941-6-28 2804 Lassen 10 miles W of Chester, rte 36. Comment
  UCR17284  Elymus elymoides Frank C. Vasek 1975-7-11 750711- 35 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  SEINET10527886  Elymus elymoides Paul Gallian, David B. Dunn 1971-6-2 Gallian 515 Lassen 6 mi N of Hallelujah Jct on US hwy 395, in Artemesia tridentata, Jeffery pine, along high ridge & in sandy wash. 1402 Comment
  SEINET10527893  Elymus elymoides Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2581 Lassen 6 mi S of Adin, alond Calif. hwy 139 right-of-way; in basalt-clay, grassy road bank; Artemesia-Juniper assoc. 1372 Comment
  CHSC118823  Elymus elymoides var. californicus L. P. Janeway; B Castro 2015-6-5 11762 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  JEPS126479  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-30 CA 350 -043 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  CDA31743  Elymus glaucus A. A. Beetle 1941-6-28 2803 Lassen Near Route 36, 10 miles west of Chester 0 Comment
  CHSC112796  Elymus glaucus Lowell Ahart; John Dittes 2013-7-23 18893 Lassen About 30 feet northeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1136935  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  CAS-BOT-BC206734  Elymus glaucus subsp. glaucus John Thomas Howell; Gordon H. True 1973-8-1 50179 Lassen Gold Run Creek south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  UC1037145  Elymus trachycaulus Leo Whitney 1935-6-24 3306 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC188858  Elymus trachycaulus Milo S. Baker Lassen mts. s Dixie Valley Comment
  CHSC99783  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2007-6-20 14908 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters of Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC29894  Elymus trachycaulus subsp. trachycaulus Robin L. Ondricek 1978-8-2 113 Lassen North edge of dam at Murrers Upper Meadow. 1548 Comment
  UCD62706  Elymus trachycaulus subsp. trachycaulus L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  SEINET10561204  Elymus triticoides subsp. multiflorus Howell 1973-6-28 Howell 49522 Lassen Elysian Valley, west of Janesville. 1326 Comment
  POM119924  Ephedra californica Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  CHSC30602  Ephedra viridis L. J. Dawson 1975-7-7 43 Lassen 6 mi from Hwy. 395 on Ravensdale Road. 1584 Comment
  CHSC32865  Ephedra viridis J. S. White 1980-4-14 124 Lassen 3 mi ne of Wendel. 1371 Comment
  CHSC7704  Ephedra viridis Beverly J. Wise 1969-5-18 44 Lassen 13.4 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. Comment
Read comments
Dec 31 2006
  HSC1311  Ephedra viridis L. H. Myers 1963-4-14 35 Lassen 2 mi. S of Hwy. 395, Doyle 1372 Comment
  JEPS94703  Ephedra viridis Vernon H. Oswald and Lowell Ahart 1998-5-22 9103 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  NY70804  Ephedra viridis D. W. McNeal 1980-6-1 2337 Lassen Above Highway 139, 5.4 miles north of the junction of Highway 36 in Susanville Comment
  SEINET10532255  Ephedra viridis Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 893 Lassen Collected 3 mi N of Milford, Callif., on Hwy 395 at Honey Lake campgrounds. Comment
  HSC68917  Epilobium brachycarpum Gary Schoolcraft 1980-7-7 302 Lassen N end of Eagle Lake 1585 Comment
  JEPS121253  Epilobium brachycarpum Lowell Ahart 2013-7-22 18845 Lassen W margin of duck field, about 10 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  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
  JEPS114690  Epilobium ciliatum subsp. glandulosum Lowell Ahart, John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC113082  Epilobium densiflorum Lowell Ahart; John Dittes 2013-7-22 18878 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
  UC1567379  Epilobium densiflorum G. Schoolcraft 1989-7-18 1984 Lassen s Clark's Valley Rd. (near Box Spring) 1813 Comment
  UC725477  Epilobium densiflorum A. A. Heller 1938-7-28 15296 Lassen about a mile e Westwood (meadow on edge of swamp) 1524 Comment
  CHSC30611  Epilobium hallianum G. A. Brown 1975-7-7 1 Lassen Gallatin Peak, western slope. 1990 Comment
  SEINET10453023  Epilobium oregonense Mary Susan Taylor 1974-1 Taylor 279 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET194973  Epilobium pallidum A. A. Heller 1938-7-28 15295 Lassen Edge of swamp about mile east of Westwood 1524 Comment
  UC1122350  Epilobium torreyi A. Simontacchi 1940-6-30 905 Lassen 2.2 mi ene Ebey Lake 1699 Comment
  CHSC66368  Equisetum arvense Vernon H. Oswald; Lowell Ahart 1996-6-17 7821 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 a pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CHSC27602  Equisetum laevigatum Jerry Snodgrass 1978-7-8 58 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. 1499 Comment
  CAS-BOT-BC284059  Eragrostis pectinacea var. pectinacea John Thomas Howell 1975-7-23 51383 Lassen Susanville, Sierra Nevada 1295 Comment
  CAS-BOT-BC174094  Eremogone aculeata John Thomas Howell 1934-6-14 12160 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC4879  Eremogone congesta R. Carter 1967-6-23 544 Lassen Growing ca. 5 yds. off N side road. Comment
  JEPS124509 Image available Eremogone congesta L. Fleckenstein 1967-7-12 70 Lassen Collected 300 yds east of Hwy. 139, 15.2 Mi. S. E. of Adin, near Willow Creek Campground. Comment
  JEPS124510 Image available Eremogone congesta Lynne C. Carter 1967-7-11 87 Lassen Willow Creek Campground, Modoc Natl. Forest, about 300 ft. up the ridge North of Ranger Station. Comment
  CAS-BOT-BC174204  Eremogone congesta var. congesta Louella Bass 1973-6-3 91 Lassen Elysian Valley 1325 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
  CAS-BOT-BC159995  Eremothera boothii subsp. alyssoides Mrs. C. C. Bruce 1898-6-1 2139 Lassen Shumway Comment
  UC1483875  Eremothera boothii subsp. alyssoides G. Schoolcraft 1980-5-16 234 Lassen on Wendell Hwy n kiln 1280 Comment
  UC725471  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen on Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  JEPS69075  Eriastrum signatum W. L. Jepson 1918-8-2 7757 Lassen Beckwith Pass 1463 Comment
  UC908543  Eriastrum signatum R. F. Hoover 1940-10-1 4648 Lassen Johnstonville Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  NY1012886  Eriastrum sparsiflorum W. W. Eggleston 1911-7-8 7191 Lassen Vicinity of Doyle Station 1290 Comment
  JEPS124584 Image available Eriastrum sparsiflorum M. R. Kempf 1965-7-12 290 Lassen 1 mile N. of Milburn, growing west side of road HWY 398. Comment
  UC133906  Eriastrum sparsiflorum Dr. Gustav Eisen July 1891 Lassen Honey Lake Comment
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  SEINET14623340  Eriastrum wilcoxii M. J. Williams 1974-7-26 74 -L-26 Lassen 2 miles W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  UC133905  Eriastrum wilcoxii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  SEINET195495  Ericameria bloomeri G. Thomas Robbins 1945-10-7 2153 Lassen Lassen National Forest ; Southeast slope of Harvey Mountain 2-3 miles northeast of Burgess Spring Harvey Valley 1829 Comment
  UC1037321  Ericameria bloomeri Leo Whitney 1934-9-9 1886 Lassen near summit Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  UC76031  Ericameria bloomeri Milo S. Baker Lassen Big Valley, Lassen and Modoc Co. Big Valley Comment
  CAS-BOT-BC298171  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  CAS-BOT-BC298178  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  UC761846  Ericameria nauseosa var. oreophila R. F. Hoover 1940-9-28 4638 Lassen Leavitt Comment
  CAS-BOT-BC294183  Ericameria nauseosa var. speciosa Clare B. Hardham 1969-8-28 17426 Lassen West of Janesville Comment
  UC217115  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11681 Lassen s side of Honey Lake Valley Comment
  UC761817  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC299486  Ericameria nauseosa var. washoensis Gary Schoolcraft 1984-9-11 1375 Lassen Along Hwy. 395 about 1/2 mile south of Ramhorn Campground Road 1615 Comment
  CAS-BOT-BC293011  Ericameria parryi var. nevadensis G. Schoolcraft 1992-8-19 2250 Lassen About 5 mi. west of Susanville, s. of river 1432 Comment
  SEINET10617383  Erigeron aphanactis Jeffrey Huber 1971-6-2 Huber 133 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  UC87724  Erigeron aphanactis var. aphanactis unknown 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC293527  Erigeron aphanactis var. aphanactis P. Monnet 1913-7-6 809 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  UC1924209  Erigeron bloomeri Debra Valov 2004-6-9 2004274 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  SEINET3132724  Erigeron bloomeri J. L. Strother 1970-5-23 952 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  CAS-BOT-BC294489  Erigeron bloomeri var. bloomeri Ralph K. Gierisch 1968-7-11 3343 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC117135  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2015-6-5 11759 Lassen Great Basin, Modoc lateau. 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
  CHSC89742  Erigeron bloomeri var. bloomeri L. P. Janeway 2004-6-26 8140 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
  HSC82194  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6048 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  POM33272  Erigeron bloomeri var. bloomeri Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC297144  Erigeron concinnus var. concinnus Ella Dales Cantelow 1940-5-31 3086 Lassen e. of Bieber 1219 Comment
  CHSC66373  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1996-6-17 7808 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 Susan River E of Devils Corral Trailhead and W of the 6.0 mile post. 1402 Comment
  CHSC99112  Erigeron divergens Lowell Ahart; John Dittes 2008-6-20 14965 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  CAS-BOT-BC296846  Erigeron divergens John Thomas Howell 1973-7-10 49773 Lassen Near Westwood, Sierra Nevada 1554 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
  CAS-BOT-BC296899  Erigeron eatonii var. eatonii A. M. Vollmer; L. Beane 1953-7-1 50 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  UCD131887  Erigeron eatonii var. nevadincola Grady L. Webster 1989-5-13 7719 Lassen 2.5 miles E of Beckworth Pass. 1493 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
  UC1776680  Erigeron eatonii var. plantagineus G. Schoolcraft 1993-6-29 2313 Lassen Ash Valley RNA 16 miles E of Adin 1554 Comment
  CAS-BOT-BC300424  Erigeron elegantulus Gary Schoolcraft 1983-6-29 1040 Lassen Along Hwy 139 near Upper McBride Sp. 1584 Comment
  JEPS95131  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  JEPS117491  Erigeron filifolius var. filifolius Lowell Ahart, John Dittes 2010-7-31 17008 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
  CHSC65089  Erigeron inornatus var. calidipetris Vernon H. Oswald; Lowell Ahart 1995-7-24 7146 Lassen Cascade Range. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. Edge of the road. 1905 Comment
  OBI76966  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen Natl Forest.N of 30N61, W of A21. Swain Mtn quad. T30N R8E sec 26 NW of SW 1728 Comment
  RSA712920  Erigeron inornatus var. inornatus L. P. Janeway 2005-8-27 8521 Lassen High Cascade Range. Along road 22, 2.1 road km west of its beginning/end at Road 35N05 in Little Valley 1415 Comment
  RSA712921  Erigeron inornatus var. inornatus L. P. Janeway 2005-8-27 8522 Lassen High Cascade Range. Along Road 22, 11.3 road km east of Little Valley; above Davis Creek. 1460 Comment
  CAS-BOT-BC295507  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch 2225 Comment
  CHSC68844  Erigeron linearis Vernon H. Oswald; Lowell Ahart 1997-6-24 8608 Lassen South of Susanville on the north side of Diamond Mtn. at slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. At roadside. 1889 Comment
  POM39968  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC584272  Erigeron linearis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2265 Lassen bare summit ridge and ridges sw Diamond Mt. (Plumas and Lassen Cos. boundary, s of Susanville) 2164 Comment
  CHSC20347  Erigeron philadelphicus Mary E. Meyer 1973-7-7 17 Lassen Upper Murrer's Meadow. 1572 Comment
  HSC82189  Erigeron philadelphicus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6038 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  SJSU6631  Erigeron philadelphicus var. philadelphicus H. L. Buckalew 1961-7-9 Lassen spring by Blue Lake, Warner Mountains 1920 Comment
  CHSC89730  Erigeron pumilus var. intermedius L. P. Janeway 2004-6-26 8163 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  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
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UC76008  Erigeron pumilus var. intermedius Milo S. Baker 1890-1 Lassen Honey Lake Valley, near Milford; Honey lake Valley Comment
  CAS-BOT-BC300310  Erigeron tener G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2285 Lassen Summit Thompson Peak, south of Janesville 2330 Comment
  SEINET5333913  Eriogonum baileyi D. Tonenna 2007-8-20 s.n. Lassen Hwy 395, 6 mi. north of Halellujah Junction, west of road 1450 Comment
  JEPS57071  Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-14 7995 Lassen e side, Madeline Plains, at base of foothills Madeline Plains 1615 Comment
  SEINET530700  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  UCR92116  Eriogonum baileyi var. baileyi G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  NY242909  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen Between Secret Valley and Ravendale. U.S. Highway #395. 1524.0 Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  SEINET5328978  Eriogonum collinum N. H. Holmgren, James Lauritz Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 iles south of Ravendale, Comment
  POM105426  Eriogonum douglasii var. douglasii Marcus E. Jones 1897-7-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1553394  Eriogonum douglasii var. douglasii G. Schoolcraft 1988-6-7 1812 Lassen 14 air mi ne Ravendale 1737 Comment
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UCSC005349  Eriogonum elatum Randall Morgan 1998-7-20 3319 Lassen Hwy 144 west of Susanville Comment
  SEINET251879  Eriogonum elatum var. villosum Leila M. Shultz, John S. Shultz 1985-6-23 8608 Lassen Long Valley Creek drainage, 5 miles north of Doyle. 1305 Comment
  CDA22621  Eriogonum microthecum var. ambiguum L. Ahart 2003-8-17 10518 Lassen About 100 yards west of the cattle guard, on the southeast side of Smoke Creek Ranch Road, about 8 - 9 miles (air) northeast of Highway 395, about 30 miles (air) northeast of Susanville. Comment
  UC85948  Eriogonum microthecum var. laxiflorum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  NY572524  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-7-20 807 Lassen Lower slopes of Wagner Canyon 1402.1 Comment
  NY803607  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-22 2949 Lassen About 3 miles northwest of Constantia, CA 1 mile west on FS Road 24N22X 1417 Comment
  SJSU9529  Eriogonum nudum var. deductum J. W. Tilden 1960-6-27 1492 Lassen Westwood 1524 Comment
  CAS-BOT-BC266365  Eriogonum nudum var. deductum H. D. Ripley; R. C. Barneby 1943-6-13 5700 Lassen South of Milford 1569 Comment
  CHSC106170  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  OBI76957  Eriogonum nudum var. nudum Anthony Baniaga 2011-7-5 420 Lassen Lassen Natl Forest, e of Willard Crk. Fredonyer Pass quad. T29NR10E sec 25 NE of NW 1485 Comment
  JEPS56589  Eriogonum nudum var. pubiflorum Brown and Wieslander 1922-7-23 6 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  JEPS56616  Eriogonum nudum var. pubiflorum Joseph Grinnell 1928-6-26 Lassen Cinder Cone 2103 Comment
  SEINET14417488  Eriogonum nudum var. pubiflorum Robert L. Johnson, Mikel R. Stevens 2015-1 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
  CAS-BOT-BC266814  Eriogonum nummulare Arnold Tiehm 1978-10-14 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan about 1.7 miles W of the Nevada line 1524 Comment
  POM105327  Eriogonum ochrocephalum var. ochrocephalum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC12966  Eriogonum ovalifolium var. nivale K. R. Stern 1974-6-26 5864 Lassen Ca. 3 mi nw of intersection of Pittville Rd. with Hwy. 44, ca. 200 yds. ne of Poison Lake. 1700 Comment
  CAS-BOT-BC258739  Eriogonum ovalifolium var. ovalifolium John Thomas Howell 1934-7-7 12469 Lassen Pine Creek Flat Comment
  CHSC12948  Eriogonum prociduum var. prociduum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5813 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CAS-BOT-BC268619  Eriogonum spergulinum var. reddingianum Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  UC412800  Eriogonum spergulinum var. reddingianum Franklin P. Nutting Lassen Pine Creek Comment
  UC699730  Eriogonum spergulinum var. reddingianum Farris Farris 1936-6-15 Lassen Eagle Lake road 1524 Comment
  UC303059  Eriogonum spergulinum var. reddingianum Pearl Safford Lassen Susanville [uncertain locality] Comment
  SBBG65540  Eriogonum sphaerocephalum S. W. Hutchinson -Jun-1925 858 Lassen near Susanville 1219 Comment
  SBBG65541  Eriogonum sphaerocephalum S. W. Hutchinson -Jun-1925 856 Lassen Eagle Lake 1584 Comment
  CHSC89739  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2004-6-26 8142 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
  HSC63565  Eriogonum sphaerocephalum var. halimioides Thomas W. Nelson, Jane P. Nelson 1980-7-6 5998 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  OBI77559  Eriogonum sphaerocephalum var. halimioides Anthony Baniaga 2011-7-1 409 Lassen CDFG. Bass Hill Wildlife Area W of hwy 395. Janesville quad. T29N R13E sec 19 SW of SW 1279 Comment
  UC1032330  Eriogonum sphaerocephalum var. halimioides A. Simontacchi 1940-7-8 923 Lassen 5.1 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC262737  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Janesville on Highway 395 Comment
  RSA125406  Eriogonum sphaerocephalum var. sphaerocephalum Arthur R. Kruckeberg 1954-6-22 3323 Lassen Frequent on sagebrush antelope brush slopes betw Susanville and Jonesville on Hwy 395 Comment
  CAS-BOT-BC262744  Eriogonum strictum var. anserinum John Thomas Howell 1934-7-7 12478 Lassen Harvey Valley Comment
  NY762354  Eriogonum strictum var. anserinum H. D. D. Ripley 1944-5-30 5965 Lassen Secret Valley 1554.5 Comment
  NY283167  Eriogonum strictum var. anserinum G. Schoolcraft 1983-7-12 1085 Lassen Southeast slopes of Shinn Mountains, 32-16-5 SW 1828.8 Comment
  CAS-BOT-BC267893  Eriogonum umbellatum H. D. Ripley; R. C. Barneby 1943-6-13 5413 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC267887  Eriogonum umbellatum Clarence R. Quick 1962-8-3 62 -89 Lassen Delasmutt Ranch, Hw. 44, nr. Susanville-Old Station, along dirt road to Blacks Mt. E.F. Hdqtrs. 1615 Comment
  RSA0029317  Eriogonum umbellatum John F. Emmel 1997-6-8 1489 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. 1402 Comment
  UC1542762  Eriogonum umbellatum var. modocense Barbara Ertter 1987-7-25 7310 a Lassen ca. 22 air mi nw Susanville (Pine Creek Valley at jct. of Bridge Creek Springs Rd.); Pine Creek Valley 1737 Comment
  CAS-BOT-BC265101  Eriogonum umbellatum var. nevadense Frank W. Peirson 1926-6-24 6848 Lassen A few miles southward from the Madeline Plain Comment
  JEPS107821  Eriogonum umbellatum var. nevadense Lowell Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  RSA62913  Eriogonum umbellatum var. nevadense B. J. Cox, David B. Dunn 1971-6-2 2605 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 in Artemisia tridentata. Pinyon pine, Jeffery Pine along high ridge and in sandy wash. 1402 Comment
  UC1137677  Eriogonum umbellatum var. nevadense L. R. Short and J. Warren 1936-6-12 S- 432 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1804 Comment
  UC85974  Eriogonum umbellatum var. nevadense T. S. Brandegee 1892-6-25 Lassen Honey Lake Comment
  RSA795324  Eriogonum umbellatum var. polyanthum L. Ahart, John Dittes 2010-7-31 16988 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1511 Comment
  RSA766453  Eriogonum ursinum C. Epling, Wm. Robinson 1935-7-17 s.n. Lassen Chaos Crags, Lassen Park Comment
  CAS-BOT-BC262365  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC105234  Eriogonum vimineum Lowell Ahart; John Dittes 2010-7-31 17018 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
  CHSC30597  Eriogonum vimineum Marc Held 1972-6-22 5 Lassen Approx. 500 yrds. north-east of E. L. B. S. Comment
  JEPS117563  Eriogonum vimineum Lowell Ahart, John Dittes 2010-7-31 17018 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
  JEPS22038  Eriogonum vimineum Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-29 5994 Lassen about 1 mi n Sage Hen siding on Southern Pacific R.R. line (just e of U.S. Highway No.395, 7.0 mi n of Madeline) Comment
  JEPS56154  Eriogonum vimineum W. L. Jepson 1918-8-2 7764 Lassen Beckwith Pass 1463 Comment
  POM203843  Eriogonum vimineum J. T. Howell 1934-7-8 12493 Lassen Spaldings Resort; Eagle Lake Comment
  RSA125290  Eriogonum vimineum Peter H. Raven, Otto T. Solbrig 1958-6-17 13272 Lassen Along Hwy 395, 19.0 miles south of Ravendale Comment
  RSA768781  Eriogonum vimineum L. Ahart, John Dittes 2010-7-31 17018 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  UC526153  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 mi s Omira Comment
  UC6518  Eriogonum vimineum M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  POM260787  Eriogonum vimineum Alice Eastwood, John T. Howell 1940-6-16 8343 Lassen Janesville. Comment
  CDA20364  Eriophyllum lanatum D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  CHSC12492  Eriophyllum lanatum Carol Weld 1969-6-20 9 Lassen Dean's Meadow. 1950 Comment
  HSC81546  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 5997 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  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
  UC1249275  Eriophyllum lanatum var. achilleoides Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8469 Lassen 50 mi se Susanville Comment
  CAS-BOT-BC301390  Eriophyllum lanatum var. grandiflorum R. Carter 1967-6-23 538 Lassen Along rd to Murrer's Meadow 1584 Comment
  CHSC106076  Eriophyllum lanatum var. grandiflorum Lowell Ahart; John Dittes 2010-7-31 17024 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC59502  Eriophyllum lanatum var. integrifolium Mary Meyer 1980-1-1 Lassen Several yards west of gravel pits. 1615 Comment
  OBI76976  Eriophyllum lanatum var. integrifolium Anthony Baniaga 2011-6-20 386 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  POM66743  Eriophyllum lanatum var. integrifolium Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA221801  Eriophyllum lanatum var. integrifolium Noel Holmgren, John J. Fay, Barton L. Bethers 1970-6-25 4376 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  UC1609106  Eriophyllum lanatum var. integrifolium Vernon H. Oswald and Lowell Ahart 1993-6-28 5583 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  CHSC116092  Erodium cicutarium Lowell Ahart; John Dittes 2015-7-13 20320 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
  CHSC91300  Erodium cicutarium Lowell Ahart; John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS97782  Eryngium alismifolium Annetta M. Carter 1945-9-30 1716 Lassen W side of Eagle Lake. About 3 mi. S of Spaldings where road crosses bridge over dry creek. Comment
  UC1508836  Eryngium alismifolium Gary Schoolcraft 1984-7-31 1329 Lassen ca. 1 mi. n. Ravendale Fire Station 1615 Comment
  JEPS66442  Eryngium articulatum L. R. Heckard and P. Rubtzoff 1971-8-3 2703 Lassen 1.3 mi. w. of Pit R. bridge at Bieber 1219 Comment
  UC21010  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3374 Lassen Honey Lake Valley Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  CHSC71082  Erysimum capitatum var. capitatum Vernon H. Oswald; Lowell Ahart 1998-5-22 9117 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  UC585097  Erysimum capitatum var. capitatum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1766 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  CHSC99238  Erysimum repandum Lowell Ahart; John Dittes 2008-6-20 14900 Lassen About 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC55197  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  SEINET8340800  Erythranthe floribunda Unknown 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) northweast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC30569  Erythranthe guttata Sori H. Shad 1970-6-26 30 Lassen Collected in Deans Meadow. 1950 Comment
  CHSC5904  Erythranthe guttata M. West 1946-6-15 Lassen So. end Eagle Lake. 1584 Comment
  SEINET14291839  Erythranthe guttata D. W. Taylor 2005-6-29 19378 Lassen Piute Creek, 3 miles W from W edge of Susanville; 40.43106 -120.70866 1311 Comment
  SD7073  Erythranthe lewisii Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CHSC30559  Erythranthe primuloides Sori H. Shad 1970-6-25 11 Lassen At Deans Meadow. 1828 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
  CHSC54358  Erythranthe rubella Richard Snow 1991-5-5 22 Lassen East of Susanville. Comment
  UCD139645  Erythronium multiscapideum W. W. Robbins 1926-4-17 541 Lassen Grass Valley. Comment
  CAS-BOT-BC403150  Eschscholzia californica A. M. Vollmer; L. Beane 1953-7-1 103 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS127177  Eschscholzia californica subsp. californica Lowell Ahart, John Dittes 2016-7-15 21228 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC312018  Eucephalus breweri Clare B. Hardham 1971-8-22 18390 Lassen Diamond Mountain 2133 Comment
  JEPS117958  Eucephalus breweri Zoya Akulova-Barlow Sep 2006 Lassen Sierra Nevada, Dyer Mountain 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
  CHSC45999  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, .6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin). On and about driveways in front of house. 1280 Comment
  CHSC115563  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2015-7-13 20312 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS97418  Euphorbia spathulata Vernon H. Oswald and L. Ahart 1995-6-19 6881 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  UC29863  Eurybia integrifolia Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  JEPS94086  Euthamia occidentalis Vernon H. Oswald and Lowell Ahart 1998-9-8 9579 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on County Rd. 91 (Bieber-Lookout Rd.)); Ash Creek and Big Swamp 1258 Comment
  CAS-BOT-BC413870  Fallopia convolvulus John Thomas Howell 1975-7-23 51398 Lassen Susanville 1295 Comment
  UC1024801  Festuca idahoensis Leo Whitney 1935-6-23 3294 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1609256  Festuca idahoensis Vernon H. Oswald and Lowell Ahart 1993-7-8 5664 Lassen 1.9 mi n Hwy. 44 (Pittville Rd (Lassen 111, 36N01), between the road and railroad, on se edge of Poison Lake); Poison Lake 1709 Comment
  OBI75881  Festuca myuros Anthony Baniaga 2011-6-30 406 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1460 Comment
  CAS-BOT-BC278932  Festuca rubra John Thomas Howell 1934-7-6 12458 Lassen Harvey Valley Comment
  UC1024686  Festuca rubra Leo Whitney 1933-8-3 2159 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCD66336  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  CAS-BOT-BC282537  Festuca viridula Parkison 1916-6-16 27231 Lassen North slope Crater Mountain, Lassen forest 1767 Comment
  JEPS19565  Floerkea proserpinacoides Milo S. Baker and F. P. Nutting 1894-6-15 Lassen Meadow in the Big Valley Mountains situated nw of Big Valley in which Bieber and Nubieber are located, northwestern Lassen County Big Valley; Big Valley Mountains Comment
  UC963893  Floerkea proserpinacoides Milo S. Baker 1952-5-23 12421 b Lassen e of Chester (along Highway 36); Highway 36 Comment
  CHSC61058  Fragaria virginiana Vernon H. Oswald; Lowell Ahart 1993-8-3 5756 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the margin of the swamp. 1932 Comment
  POM128264  Frasera albicaulis var. modocensis Franklin P. Nutting s.n. Lassen South side of Dixiy [or Dixey] Mountains. Comment
  POM76343  Fraxinus dipetala C. C. Bruce 1897-7-3 s.n. Lassen Janesville(?), below Prattville 1372 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
  POM109791  Fritillaria pudica Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  JEPS4950  Fritillaria pudica Louise Scroggy 1918-3-24 Lassen 1/4 mi above Pit River (on Dixie Valley Road, 2 mi above Rocky Comfort School House in nw corner of Lassen Co., 15 mi n of boundary line); Dixie Valley Road Comment
  UC1609119  Galium aparine Vernon H. Oswald and Lowell Ahart 1993-6-14 5548 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)); Eagle Lake 1566 Comment
  CHSC68871  Galium bifolium Vernon Oswald; Lowell Ahart 1997-6-24 8606 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  CDA42121  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  CHSC60406  Galium grayanum Mary Ann Showers 1992-6-28 2701 Lassen Lassen Volcanic National Park. Andesite cliffs west of Soda Lake and below tarn at base of north facing cirque between Pilot Pinnacle and Mt. Diller. 2438 Comment
  HSC68928  Galium multiflorum Gary Schoolcraft 1980-5-30 245 Lassen Bird Canyon, SW of Herlong 1433 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  HSC95185  Galium trifidum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 523 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95186  Galium trifidum Gordon Leppig, Tony LaBanca 1997-6-29 540 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA201323  Galium trifidum var. pusillum J. T. Howell 1959-9-23 34886 Lassen end of Juniper Lake. 2058 Comment
  RSA768780  Gayophytum heterozygum L. Ahart, John Dittes 2010-7-31 17025 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  CHSC27711  Gayophytum racemosum George Deriso 1978-7-21 90 Lassen S of Eagle Lake, at E end of Mahogany Lake; near lake shore. 2060 Comment
  SEINET10936377  Gayophytum ramosissimum David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17752 Lassen 3 mi s of hallelujah jct on us hwy 395 & calif 70; along roadside and in artemesia-grassland field. Comment
  SEINET8586424  Gentiana newberryi C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC726252  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen 2 mi e Westwood 1524 Comment
  CHSC76758  Gentiana newberryi var. newberryi L. P. Janeway 1999-9-5 6576 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  JEPS28703  Gentianella amarella subsp. acuta George W. Gillett 1957-7-28 929 Lassen 1 mi above Butte Lake (on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  CHSC59088  Gentianopsis simplex Vernon H. Oswald; Lowell Ahart 1992-8-25 5186 Lassen Lassen Volcanic National Park. Grassy Creek on the S end of Snag Lake. 1851 Comment
  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
  CHSC71389  Geranium viscosissimum var. nervosum Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9261 Lassen Forest Route 38N04 between Hwy. 139 and Williams Reservoir 1.2 mi east of the road to Smith Flat, 2.0 mi northeast of Hwy. 139 at Willow Creek Campground. 1664 Comment
  NY1101445  Geranium viscosissimum var. nervosum B. M. Bartholomew 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains. 2080 Comment
  CAS-BOT-BC459350  Geum aleppicum Marcus E. A M Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  SEINET6702766  Geum macrophyllum var. perincisum G. Schoolcraft 1994-8-2 2393 Lassen About 2 miles northwest of Boot Lake 2438 Comment
  CAS-BOT-BC143569  Geum triflorum Clarence Quick 1963-7-12 63 -34 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CHSC68762  Geum triflorum Vernon H. Oswald; Lowell Ahart 1997-5-27 8504 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the bank of a creek paralleling the road. 1546 Comment
  JEPS94554  Geum triflorum Vernon Oswald and Lowell Ahart 1997-6-24 8649 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  RSA702135  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC773877  Geum triflorum L. R. Short, J. Warren 1936-6-23 S 423 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1764 Comment
  CHSC71129  Gilia inconspicua Vernon H. Oswald; Lowell Ahart 1998-5-22 9107 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. On roadside banks. 1371 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
  SEINET14644567  Gilia inconspicua P. B. Kennedy 1901-6-10 s.n. Lassen Constantia, railroad station. Comment
  RSA104236  Gilia malior Verne Grant, Alva Grant 1956-5-17 21753 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  CHSC7766  Gilia modocensis Beverley J. Wise 1969-5-18 76 Lassen 16.8 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1371 Comment
  UC604679  Gilia modocensis Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  CAS-BOT-BC523868  Gilia modocensis Alice Eastwood; John Thomas Howell 1940-6-16 8355 Lassen Constantia Comment
  SEINET3087473 Image available Gilia salticola Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert. 1448 Comment
  SBBG52268  Gilia sinuata C. Davidson 1975-6-7 2756 Lassen 1 mi E of Beckwourth Pass on Hwy 70 Comment
  UC1583952  Gilia sinuata G. Schoolcraft 1990-6-12 2084 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); Pine Dunes RNA, e of Ravendale 1706 Comment
  CHSC66283  Glyceria borealis Vernon H. Oswald; Lowell Ahart 1996-6-24 7872 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS96135  Glyceria borealis Vernon H. Oswald and Lowell Ahart 1996-6-24 7872 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  CHSC77264  Glyceria elata G. Schoolcraft 1997-7-30 2614 Lassen W facing slope of Diamond Mtn. 1950 Comment
  UC1483863  Glyptopleura marginata G. Schoolcraft 1980-5-9 232 A Lassen near state line s of High Rock Ranch 1219 Comment
  CAS-BOT-BC302593  Gnaphalium palustre John Thomas Howell 1973-6-28 s.n. Lassen Elysian Valley 1325 Comment
  CHSC60854  Gratiola ebracteata Vernon H. Oswald; Lowell Ahart 1993-6-28 5625 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
  CHSC65359  Gratiola heterosepala Vernon H. Oswald; Lowell Ahart 1995-8-14 7200 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  RSA772749  Gratiola heterosepala Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47210 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC66867  Gratiola neglecta Vernon H. Oswald; Lowell Ahart 1996-9-10 8280 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC64781  Grayia spinosa Vernon H. Oswald 1995-5-24 6764 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of Amedee Mtns. 1249 Comment
  JEPS59821  Grayia spinosa W. L. Jepson 1918-8-4 7806 Lassen Horse Lake 1554 Comment
  UCD98871  Grayia spinosa S. Stephens 1980-4-14 s.n. Lassen 1/8 mi. off Wendel Rd. on Brubeck spgs. Rd. Comment
  CHSC37692  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  UC1609450  Gymnosteris parvula Vernon H. Oswald and Lowell Ahart 1993-6-3 5485 Lassen between Susanville and Poison Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi n of its jct w Lassen 21 (32N02) to Eagle Lake, on w edge of Pine Creek Valley); Pine Creek Valley, Champs Flat Road 1731 Comment
  CDA36783  Gypsophila paniculata D. B. Joley 1976-6-22 1 Lassen Janesville. 0 Comment
  JEPS103223  Hackelia amethystina G. Schoolcraft 1981-6-12 455 Lassen Gold Run Rd. on lower slopes of Diamond Mtn. 1889 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
  NY537530  Halogeton glomeratus T. H. Kearney 1951-8-20 28229 Lassen Honey Lake Valley near Herlong 1280.2 Comment
  UCR109608  Halogeton glomeratus T. C. Fuller 1962-8-28 9475 Lassen Adjacent to railroad tracks, Herlong Siding 1250 Comment
Read comments
Apr 14 2011
  RSA97952  Halogeton glomeratus J. L. Myler, Les Berry 1954-8-17 s.n. Lassen Karlo. Comment
  SBBG8396  Helianthella californica H. and M. Dearing 1938-7-1 2246 Lassen near Westwood Comment
  CHSC7647  Helianthus annuus Beverley J. Wise 1948-8-23 21 Lassen 5 mi. N.W. of Susanville of Las. Co. Rd. 201. 1371 Comment
  SBBG94823  Helianthus annuus G. K. Helmkamp 1990-9-23 A- 11 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  CHSC64756  Helianthus cusickii Vernon H. Oswald 1995-5-31 6798 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  JEPS25527  Helianthus cusickii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7141 Lassen beside Hwy 395 one-fourth mi s of junction road to Smoke Creek 1341 Comment
  POM253276  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  UC579801  Helianthus cusickii David D. Keck and J. Clausen 1935-6-24 3739 Lassen 2 mi s Ravendale 1465 Comment
  CAS-BOT-BC305660  Helianthus cusickii Philip A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale 1310 Comment
  UCD142986  Heliotropium curassavicum Richard R. Halse 2010-8-25 8086 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  HSC68922  Heliotropium curassavicum var. oculatum Gary Schoolcraft 1980-7-10 303 Lassen E shore of Eagle Lake 1555 Comment
  UC174811  Hemizonella minima T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC1776717  Hemizonella minima G. Schoolcraft 1987-5-19 1704 Lassen Ash Valley RNA 16 mi. E. of Adin 1554 Comment
  UC1776662  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  JEPS94598  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1997-5-27 8525 Lassen on Forest Route 38N04 4.7 mi ne Hwy. 139; Coyote Flat 1798 Comment
  UCD119473  Hesperochiron californicus Geo C. Wood 1940-4-22 s.n. Lassen Madeline Plains. 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
  UC1211991  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1670 Lassen creek about 4 mi sw junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  CAS-BOT-BC280679  Hesperostipa comata Margaret Williams; Steven Williams 1974-7-26 74 -L-43 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC280680  Hesperostipa comata John Thomas Howell 1934-6-10 11841 Lassen Near Plumas Junction Comment
  CHSC93674  Heterocodon rariflorum Lowell Ahart; John Dittes 2005-6-2 11961 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC1776666  Heterocodon rariflorum G. Schoolcraft 1996-7-17 2538 Lassen Moll Reservoir W of Ash Valley 1615 Comment
  JEPS103227  Heterocodon rariflorum G. Schoolcraft 1997-7-14 2609 Lassen Decomposed granite S of Milford 1402 Comment
  RSA783327  Heterotheca villosa var. minor R. R. Halse 2010-8-26 8091 Lassen Along State Hwy 70 at Beckwourth Pass ca. 4.3 miles west of its junction with US Hwy 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  UC73894  Heterotheca villosa var. minor J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley; Honey Lake Valley Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  NY783480  Heuchera rubescens G. Schoolcraft 1984-6-5 1197 Lassen In Wendel Canyon 1554.5 Comment
  UC1562822  Heuchera rubescens Barbara Ertter with Gary Schoolcraft 1987-6-16 7201 Lassen ne side Honey Lake (between Hot Springs Peak and VABM); Skeedaddle Mountains 2255 Comment
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1136853  Hieracium albiflorum L. R. Short and Wm. Gansberg 1936-7-3 S 411 Lassen Burgess Spr. Exp. Range Lassen National Forest 1847 Comment
  UC1069594  Hieracium argutum H. P. Hagge 1929-9-18 39 Lassen Logan Mountain Eagle Lake Quad., Logan Mountain Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  CAS-BOT-BC318714  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  CHSC7206  Hippuris vulgaris Bruce K. Briggs 1969-9-10 232 Lassen Pond at Deans Meadow on N. end of meadow. Comment
  CAS-BOT-BC150128  Holodiscus microphyllus var. glabrescens P. Monnet 1913-7-4 802 Lassen Hot Springs Peak 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
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  CHSC75571  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald; Lowell Ahart 1999-6-9 9751 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Along a drainage below the dam of the reservoir. 1353 Comment
  JEPS28320  Hordeum brachyantherum subsp. brachyantherum George W. Gillett 1957-7-29 951 Lassen trail between Butte Lake and Snag Lake; Lassen Volcanic National Park, Butte Lake, Snag Lake 1859 Comment
  UC1100324  Hordeum brachyantherum subsp. brachyantherum Malcolm A. Nobs, S. Galen Smith 1949-7-21 1055 Lassen 4 mi N of Madelaine Comment
  UC506970  Hordeum brachyantherum subsp. brachyantherum George A. Fischer and Irwin H. Johnson 1933-7-12 F 232 Lassen Patterson Flat 1737 Comment
  UCD85366  Hordeum brachyantherum subsp. brachyantherum Beecher Crampton 1954-7-5 2060 Lassen Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD85742  Hordeum jubatum Gerald Dickinson 1963-7-15 99 Lassen Ravenville. US Hwy 395. 1618 Comment
  SEINET10483367  Horkelia fusca subsp. tenella Mary Merello 1993-6-28 Merello 752 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
  POM34906  Horkelia fusca var. brownii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1037233  Horkelia tridentata subsp. tridentata Leo Whitney 1933-8-20 3036 Lassen ca 25 mi w upper end of Eagle Lake (Hall's Flat); Lassen National Forest 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
  UCD20362  Hymenoxys lemmonii Joe DiTomaso 2002-6-4 s.n. Lassen about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Comment
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Apr 29 2013
  UC124657  Hypericum anagalloides T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC5266  Hypericum formosum var. scouleri J. Wolf 1946-6-20 Lassen Eagle Lake, Grasshopper Valley. 1624 Comment
  CHSC52812  Iliamna bakeri G. Schoolcraft 1981-7-29 552 Lassen On rocky slopes of McDonald Peak near top. 2377 Comment
  NY52522  Iliamna bakeri G. Schoolcraft 1984-8-27 1371 Lassen Eastern slopes of Little Hat Mtn. 1981.2 Comment
  JEPS808  Ipomopsis aggregata Brown and Wieslander 1922-6-19 1 Lassen Martin Springs Eagle Lake Comment
  HSC82266  Ipomopsis congesta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5991 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CHSC72317  Ipomopsis congesta subsp. palmifrons L. P. Janeway; Glenn Clifton 1998-7-9 5728 Lassen Ridgetop saddle 1.0 mi east of Diamond Mtn. 2215 Comment
  CHSC36461  Iris missouriensis Susan H. Euing 1982-6-4 15 Lassen Ca. 3/4 mi n of Murrer's Upper Meadow. Comment
  CAS-BOT-BC61865  Isoetes nuttallii John Thomas Howell 1974-7-10 50537 Lassen Elysian Valley 1325 Comment
  CHSC7635  Iva axillaris Beverley J. Wise 1969-5-23 23 Lassen 34.5 mi. E of Susanville on La. Co. Rd. 320. 1249 Comment
  UC1924201  Iva axillaris Debra Valov 2005-8-20 2005225 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1280 Comment
  RSA719895  Iva axillaris subsp. robustior Michael A. Vincent, K. Levings 2006-7-29 12908 Lassen Along Rt. 36, 14.3 miles west of Susanville. 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
  CHSC57121  Ivesia paniculata Mary Meyer 1980-7-1 Lassen Ash Valley. 1402 Comment
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Jan 15 2009
  SEINET4855366  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  SEINET6792604  Ivesia paniculata M. J. Williams 1970-7-4 595 Lassen Near Ash Creek. 1280 Comment
  JEPS109845  Ivesia webberi Dean W. Taylor 2004-5-11 19062 Lassen Seven Lakes Mountain, northwestern end flanking Dry Valley, along jeep road ca. 1 mile from Nevada State Line 1341 Comment
  SEINET7421696 Image available Juncus balticus A. L. Hormay 1941-1 25441 Lassen Sec. 31, T 33N, R 9 E, Little Harvey Valley. Altitude 5500 ft. 2007 Comment
  JEPS126567  Juncus bufonius var. congestus Lowell Ahart, John Dittes 2016-6-7 20987 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hill at the southern slope of Big Valley. Comment
  CHSC101039  Juncus hemiendytus var. hemiendytus John Dittes 2008-5-22 1521 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 480 feet north of intersection of Hwy 139 and FS Road 36N02; open, rocky volcanic toe-slope on northeast side of Willow Creek. 482 Comment
  CHSC114407  Juncus laccatus Don Lepley 2014-6-17 Lassen Lassen National Forest; Eagle Lake Ranger District. Location uncertain; near one of the forks of Baxter Cfreek, probably the northernmost one, along either Road 29N07 or downslope at the A-spur. SE1/4 of NE1/4 of Sec 5 of SW1/4 of NW1/4 of Sec 4. 1767 Comment
  SEINET3507366 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake Comment
  SEINET3507367 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  POM111108  Juncus mexicanus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  UC2487  Juncus mexicanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3283 Lassen Tule Confederacy Honey Lake Valley Comment
  CHSC29855  Juncus nevadensis Kyle Brown 1978-7-10 95 Lassen In meadow at the base of the dam in Murrers Upper Meadow. 1548 Comment
  HSC95223  Juncus nevadensis Gordon Leppig, J. Cromwell 1997-7-26 598 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA201265  Juncus nevadensis J. T. Howell 1959-9-23 34884 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UC1594640  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5124 Lassen 1.3 mi n of Hwy 44 and McCoy Flat Reservoir (Swamp on Bridge Creek, w of Cinder Pit on the logging road paralleling the e side of Bridge Creek, between Old Station and Susanville) 1719 Comment
  UC1609497  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  SEINET7421843 Image available Juncus nevadensis A. L. Hormay 1941-1 25440 Lassen Sec. 31, T 33N, R 9 E, Little Harvey Valley. Altitude 5500 ft. 1676 Comment
  UC1601784  Juncus nevadensis Baker and Nutting 1894-7-3 Lassen Dixie Creek Comment
  UCD141628  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen Skedaddle Mountains. 1828 Comment
  SEINET6175260  Juncus nodosus 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
  UC773861  Juncus tenuis L. R. Short and J. Warren 1936-6-10 S- 418 Lassen Burgess Spring Experiment Range. Comment
  CHSC87114  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  RSA712895  Juncus trilocularis L. P. Janeway 2005-7-3 8456 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
  HSC1211  Juniperus californica M. L. Stuart 1965-5-2 55 Lassen 2 mi. N of Termo on Hwy. 395 Comment
  CHSC66  Juniperus occidentalis K. McKenzie 1928-4-10 Lassen Near Bieber in Big Valley. Comment
  RSA78920  Juniperus occidentalis E. K. Balls, P. C. Everett 1952-10-10 18141 Lassen 8 mi SE of ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  SEINET3864776 Image available Juniperus occidentalis Stanley L. Welsh, N. Duane Atwood 2001-6-13 28123 Lassen Ca. 2 mi n of jct of Hwy 395 and Hwy 70, e of Beckwourth Pass.; 0 1575 Comment
  UC1001953  Juniperus occidentalis Mrs. B. A. Berry 1954-9-29 7 Lassen n Westwood Comment
  UCR164507  Juniperus occidentalis Maile Neel 2000-4-29 G- 4 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
  SEINET5334961  Juniperus occidentalis J. Vetter 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  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
  UCR3792  Juniperus occidentalis var. occidentalis Frank C. Vasek 1964-9-13 640913- 01 Lassen Warner Mtns., c. 1 mi east of Blue Lake Comment
  RSA597875  Juniperus osteosperma F. C. Vasek 1964-9-12 640912 -5 Lassen U.S. 395, 5.2 miles north of its junction with State 70 (U.S. alt. 40) 1479 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  SEINET11066903  Juniperus osteosperma G. Schoolcraft 1998-4-27 2705 Lassen N end of Fort Sage Mountains, W slope. 1951 Comment
  CHSC60920  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5657 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  CHSC6262  Kelloggia galioides W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 Comment
  POM68597  Kelloggia galioides Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC773943  Kelloggia galioides L. R. Short and D. Gish 1936-6-10 S- 379 Lassen Burgess Spring Experiment Range; Lassen National Forest 1813 Comment
  NY539721  Kochia americana G. Schoolcraft 1998-9-14 2808 Lassen Honey Lake Valley northwest of Duck Lake 1219.2 Comment
  CHSC89746  Koeleria macrantha L. P. Janeway 2004-6-26 8149 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  CHSC91190  Koeleria macrantha Lowell Ahart; John Dittes 2005-6-1 11860 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1132160  Koeleria macrantha A. Simontacchi 1940-7-8 945 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1136815  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-8-3 F 278 Lassen Lassen Forest, <Lassen National Forest> 1737 Comment
  UC773971  Koeleria macrantha L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experiment Range 1798 Comment
  CAS-BOT-BC271329  Koeleria pyramidata Clarence Quick 1963-7-12 63 -32 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CAS-BOT-BC271330  Koeleria pyramidata David D. Keck 1944-7-8 5447 A Lassen 2 mi. E. of Westwood, in meadow leading down to Mountain Meadows Reservoir 1524 Comment
  CAS-BOT-BC340319  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen About a mile east of Westwood 1524 Comment
  UC891450  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen about a mile e of Westwood Comment
  CHSC113011  Lactuca serriola Lowell Ahart; John Dittes 2013-7-23 18887 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC5032  Lactuca serriola L. B. Barlow 1967-7-6 96 Lassen 2 mi. west of Murrer's Ranch turn off, 14.9 mi. north of Susanville, Highway 139. 1463 Comment
  RSA0009789  Lactuca tatarica var. pulchella Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1584016  Lathyrus lanszwertii var. aridus G. Schoolcraft 1990-5-15 2043 Lassen about 2 mi s Nubieber; John's Valley 1402 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
  SEINET11447828 Image available Layia glandulosa F. B. Headley 1915-5-28 s.n. Lassen Honey lake Comment
  UC1101282  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-8-20 1483 Lassen 1 mi n of Doyle (Honey Lake Valley, Long Creek); Honey Lake Valley, Long Creek Comment
  UC1101286  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-7-21 1051 Lassen 1 mi e of Madeline Comment
  CAS-BOT-BC88695  Lepidium acutidens M. S. Baker; Frank Nutting 1894-1-1 s.n. Lassen Dixey Valley. 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
  JEPS114944  Lepidium chalepense Lowell Ahart, John Dittes 2008-6-20 14978 -B Lassen Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET5342390  Lepidium dictyotum A. Tiehm 1980-1 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231 Comment
  UCR67374  Lepidium latifolium George K. Helmkamp 1990-9-23 A- 4 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CHSC80174  Lepidium perfoliatum Jeanne Boze 1981-6-11 105 Lassen Along shore of Horse Lake, about 11.5 mi from Hwy 139 on Horse Lake Road. 1542 Comment
  JEPS114647  Lepidium perfoliatum Lowell Ahart, John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  UC1924234  Lepidium perfoliatum Debra Valov 2004-6-9 2004260 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD115855  Lepidium perfoliatum Grady L. Webster 1989-5-13 7713 Lassen 2.5 mi E of Beckworth Pass. 1493 Comment
  UC1123943  Leptodactylon pungens E. Sawyer 1935-6-27 230 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  UC1137720  Leptodactylon pungens George A. Fischer, Irwin H. Johnson 1933-7-12 F 202 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  UCR17290  Leptodactylon pungens Frank C. Vasek 1975-7-11 750711- 16 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CHSC27644  Leptosiphon ciliatus Jerry Snodgrass 1978-7-10 46 Lassen Colman L., DE of Eagle L. 1962 Comment
  CHSC60758  Leptosiphon harknessii Vernon H. Oswald; Lowell Ahart 1993-6-14 5516 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  GMDRC6950  Leptosiphon harknessii J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31424 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  POM253335  Leptosiphon harknessii A. A. Heller 1939-7-28 15299 Lassen About a mile east of Westwood in the Arid Transition Life zone 1524 Comment
  SEINET3364450 Image available Leptosiphon harknessii Marcus E. Jones 1897-7-2 Lassen Susanville Comment
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  OBI77050  Leucocrinum montanum Anthony Baniaga 2011-5-31 295 Lassen Lassen NF. Off hwy 44, along 32N60. Poison Lake quad T32N R7E sec 14 SW of NE 1705 Comment
  SEINET8480557  Leucocrinum montanum M. J. Williams 1969-5-24 s.n. Lassen Hwy 44, near Bogart Ranger Station. 1646 Comment
  CHSC68756  Lewisia nevadensis Vernon H. Oswald; Lowell Ahart 1997-5-27 8523 Lassen Meadow along Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi north-east of Hwy. 139. 1731 Comment
  HSC75895  Lewisia nevadensis D. H. Norris, S. Dowty, Thomas W. Nelson 1971-6-22 19194 Lassen Harvey Valley near Cone Springs Comment
  UC1136693  Lewisia nevadensis A. Simontacchi 1940-5-5 714 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat quadrangle Comment
  UC188958  Leymus cinereus Milo S. Baker Lassen Dixie Valley Comment
  UC573939  Leymus cinereus H. S. Yates 1936-8-12 9086 Lassen McKenzie Meadow Susanville Quadrangle Comment
  UC593547  Leymus cinereus E. B. Babcock and G. L. Stebbins Jr. 1936-6-8 1779 Lassen 4 mi s Ravendale (e-facing slope of creek at n end of Valley); Secret Valley 1371 Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  CAS-BOT-BC274465  Leymus triticoides Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  UCD65617  Leymus triticoides L. Whitney 1933-8-4 2128 Lassen Lassen National Forest. Sheepshead, ca. 10 miles NW of N end of Eagle Lake. 1889 Comment
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  POM109716  Lilium pardalinum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  HSC15584  Lilium pardalinum subsp. pardalinum Fred J. Kindel 1955-7-8 Lassen Susan River Comment
  CHSC66264  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1996-6-24 7853 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
  CHSC112422  Limosella aquatica Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18755 Lassen Near a drainage filled with dirt from construction of a pond, about 50 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  POM312522  Limosella aquatica Malcolm A. Nobs, S. Galen Smith 1949-7-20 1046 Lassen Bieber, along Highway 299. Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1609099  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1993-6-28 5602 Lassen Rd 35N04 at Aspen Well n of Hwy 44 on the nw edge Harvey Valley (ne of Poison Lake); ne of Poison Lake 1725 Comment
  UCR228120  Limosella aquatica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47205 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  RSA0037003  Linanthus bolanderi Lowell A. Ahart, John Dittes 2008-6-19 14892 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1523795  Linanthus bolanderi Gary Schoolcraft 1981-5-5 370 Lassen s of Adin (on e side of Hwy 139) 1325 Comment
  UC1609319  Linanthus harknessii Vernon H. Oswald and Lowell Ahart 1993-6-14 5516 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd (Lassen A1), 0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  SEINET12249488  Linanthus harknessii Unknown 1967-1 562 Lassen 1.75 mi W of Eagle Lake Biology Station 1585 Comment
  CHSC64802  Linanthus pungens Vernon H. Oswald 1995-5-24 6758 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. On a outcrop at the base of the Amedee Mtns. 1280 Comment
  UC106752  Linanthus septentrionalis T. S. Brandegee 1892-6-30 Lassen Jonesville Comment
  CDA6343  Linaria genistifolia subsp. dalmatica T. C. Fuller 1963-7-15 10893 Lassen Road to Pittville, 4.3 miles northwest of Little Valley. 0 Comment
  UC1536989  Linum lewisii Gordon H. True 1936-6-25 538 Lassen e of Harvey Ranger Station (Harvey Valley); Harvey Valley 1798 Comment
  CHSC36469  Linum lewisii var. lewisii Jeffrey R. Peak 1982-6-3 30 Lassen Ca. .8 mi s jct forest service roads 5.I6 and 5.I7 heading toward 5-corners. Comment
  CAS-BOT-BC111965  Lipocarpha micrantha John Thomas Howell 1974-7-10 50524 Lassen Elysian Valley 1325 Comment
  POM107663  Listera convallarioides Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  CHSC108025  Lithophragma glabrum Lowell Ahart; John Dittes 2011-6-20 17488 Lassen Meadow, about 3 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
  SEINET6032556  Lithophragma glabrum D. E. Brix 1962-5-2 s.n. Lassen Red Rock Road 1433 Comment
  CHSC11773  Lithophragma tenellum Wayne O. Baum 1971-6-15 71 -1 Lassen South side of fire trail approx. 100 ft. from Rd. 5 at extreme S. E. corner of Gallatin Peak. 1920 Comment
  CHSC68766  Lithophragma tenellum Vernon H. Oswald 1997-5-27 8503 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  JEPS119670  Lithospermum arvense Lowell Ahart, John Dittes 2012-7-11 18351 Lassen About 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittvile, 3955 feet east of Lassen - Shasta County Line, Fall River Valley. Comment
  CHSC7698  Lolium multiflorum Beverley J. Wise 1969-5-23 132 Lassen 34.8 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  SEINET8588544  Lomatium austiniae 2015-5-20 NV 030 -1058 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line 1460 Comment
  POM78757  Lomatium dissectum var. multifidum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  POM78249  Lomatium donnellii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UCD127267  Lomatium macrocarpum Beecher Crampton 1960-6-18 5722 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  OBI48160  Lomatium nevadense Rhonda Riggins 1989-4-27 1651 Lassen U.S. 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line. 1676 Comment
  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
  CHSC118822  Lomatium nudicaule L. P. Janeway; B. Castro 2017-7-2 12338 Lassen Northern High Sierra Nevada. Along the crest of the Diamon Mtns 4.0 aiar-km west of Diamond Mtn; at the junstion of Skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  POM78132  Lomatium nudicaule Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC671788  Lomatium plummerae Dan Tillotson 1942-6-10 Lassen four mi s Madeline Comment
  UC1559671 Image available Lomatium ravenii Gary Schoolcraft 1988-6-6 1808 Lassen ca. 3 mi. s.e. Ravendale 1615 Comment
  UC628465 Image available Lomatium ravenii David D. Keck and J. Clausen 1935-6-24 3738 Lassen 2 mi. s. Ravendale 1464 Comment
  CHSC5018  Lomatium triternatum var. macrocarpum L. G. Bennett 1967-6-24 26 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 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
  CHSC112137  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21244 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 air miles S of Adin). 1722 Comment
  JEPS127567  Lomatium vaginatum L. P. Janeway, B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. Buckhorn Lake 7.5' Quad, Comment
  RSA0049611  Lomatium vaginatum Dean Wm. Taylor 2012-6-7 21232 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  POM28313  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1523783  Lotus oblongifolius var. oblongifolius Gary Schoolcraft 1981-7-14 534 Lassen s of Pittville (along Beaver Creek); Beaver Creek 1158 Comment
  NY716010  Lotus purshianus A. G. Jones 1984-8-11 6876 Lassen Along Road 395, near Doyle 1350 Comment
  UC1137756  Lotus purshianus var. purshianus L. R. Short and J. Warren 1936-6-23 S- 447 Lassen Burgess Spring Experimental Range Lassen Forest 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
  RSA28314  Lotus unifoliolatus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC113075  Ludwigia palustris Lowell Ahart; John Dittes 2013-7-23 18904 Lassen Dry drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET7123961 Image available Lupinus andersonii E. A. Bourdo Jr. 1972-1 s.n. Lassen Lassen National Park Comment
  CHSC905  Lupinus arbustus R. Gein 1946-6-20 Lassen Mt. Fredonyer. 2133 Comment
  SEINET5327728  Lupinus arbustus N. H. Holmgren, P. K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) E of Rye Patch Canyon summit, 16 km (10 mi) airline distance SE of Ravendale. On N-facing slope 1830 Comment
  NY732864  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1985-6-12 1417 Lassen 1/2 mile south of Cleghorn Flat 1890 Comment
  CAS-BOT-BC208730  Lupinus argenteus var. heteranthus L. S. Smith 1918-8-13 1035 Lassen Silver Cr., Modoc Forest Comment
  CAS-BOT-BC208737  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21501 Lassen Reserboir above Grasshopper Valley, Lassen Forest 1500 Comment
  CAS-BOT-BC208744  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Just outside of Johnstonville on U.S. Highway #395. 1280 Comment
  CAS-BOT-BC208767  Lupinus argenteus var. heteranthus Elmer I. Applegate 1923-9-30 4032 Lassen Sagebrush plains south of Money Lake, Doyle Comment
  NY736923  Lupinus argenteus var. heteranthus P. A. Munz 1947-5-20 11888 Lassen Milford 1265 Comment
  RSA0037007  Lupinus argenteus var. heteranthus Lowell A. Ahart, John Dittes 2008-6-19 14873 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  SBBG3562  Lupinus argenteus var. heteranthus H. and M. Dearing 1938-6-30 2228 Lassen Poison Lake, 40 mi W of Susanville 1219 Comment
  SEINET10774227  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2010-7-31 Ahart 16977 Lassen T38N, R10E, center of north 1/2 Section 22. Stems from a plant 2 1/2 feet tall, on dry bare soil, 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. 1521 Comment
  SEINET11261487  Lupinus argenteus var. heteranthus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3926 Lassen 5.5 rd miles west of jct with Hwy 395 on Dawn Dr then rd to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1899 Comment
  SEINET5327973  Lupinus argenteus var. heteranthus M. J. Williams 1974-7-29 74 -L-58 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 50 1494 Comment
  UC1129768  Lupinus argenteus var. heteranthus A. Simontacchi 1940-6-28 721 Lassen 5.7 mi s Eldridge; Lassen National Forest, Halls Flat Quad. Comment
  UCR270692  Lupinus argenteus var. heteranthus John F. Emmel 1999-6-5 1631 Lassen Honey Lake Basin, north end of Fort Sage Mountains, east base of Turtle Mountain 1280 Comment
  CHSC91927  Lupinus argenteus var. meionanthus L. P. Janeway; B. Castro 2005-7-10 8477 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  JEPS107915  Lupinus argenteus var. meionanthus Lowell Ahart, John Dittes 2005-6-2 11937 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  NY746669  Lupinus brevicaulis M. J. Williams 1986-5-14 86- 40 --1 Lassen Near Highway 395, at Noble Emigrant Trail Sign, 7 road miles north of Litchfield 1524 Comment
  SEINET10484990  Lupinus brevicaulis Gary Schoolcraft 1980-5-30 Schoolcraft 246 Lassen Lassen co. T31n, r15e, se1/4, sec. 11. Elev. 4460'. On s side of rd. Into Diaz ranch at n end of mud flat. Associated with artemisia tridentata, Chrysothamnus spp., Sitanion hystrix. 1359 Comment
  CAS-BOT-BC196637  Lupinus breweri var. breweri A. M. Vollmer; L. Beane 1953-7-1 57 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  RSA160037  Lupinus caudatus David B. Dunn 1956-7-3 11914 Lassen At junction of Highway 395 and 36 near Johnstonville. 6 miles east of Susanville. Comment
  SEINET10490613  Lupinus caudatus subsp. caudatus Jeffrey Huber 1971-6-2 Huber 140 Lassen 6 mi. N of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  SEINET10490671  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 458 Lassen 6 mi. N of hallelujah jact on us hwy 395, in aremisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET10490707  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11919 Lassen Collected on rolling gravelly slopes, in spots of deeper soil and also in Runoff areas from the hwy. Comment
  POM23529  Lupinus confertus Marcus E. Jones 1897-6-16 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  NY747209  Lupinus lepidus var. confertus G. Schoolcraft 1983-6-29 1039 Lassen Coulthurst Flat 1890 Comment
  SDSU4676  Lupinus lepidus var. confertus D. F. Howe 1960-9-21 2993 Lassen 2 miles north of Janesville on #395. 1219 Comment
  SEINET8051629  Lupinus lepidus var. confertus M. J. Williams 1983-7-31 83- 126 -1 Lassen Roadside near Janesville 1280 Comment
  JEPS28491  Lupinus lepidus var. sellulus George W. Gillett 1957-9-4 1131 Lassen intersection of Widow Lake and Snag Lake trails (Butte Lake); Lassen Volcanic National Park, Butte Lake 1859 Comment
  UC1523798  Lupinus lepidus var. sellulus Gary Schoolcraft 1982-8-14 854 Lassen along Hwy 139 near Upper McBride Sp (se of Adin); near Upper McBride Sp. 1584 Comment
  UC15910  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  NY747411  Lupinus leucophyllus var. canescens M. S. Baker 1894-7-12 s.n. Lassen Pine Creek Comment
  SEINET10841246  Lupinus lyallii var. lyallii Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park, near the peak. In dry ground. Comment
  NY747428  Lupinus microcarpus G. Schoolcraft 1984-7-11 1291 Lassen About 5 miles south of Madeline along Highway 395 1615 Comment
  CAS-BOT-BC323945  Lupinus nevadensis M. S. Taylor 1982-5-29 4567 Lassen Along dirt road paralleling Hwy 395, on its E side, ca 0.5 mi N of Hwy 395 jct with Scott Rd, ca. 20 mi N of Reno. Comment
  JEPS103164  Lupinus nevadensis Beth Corbin 2002-4-11 1056 Lassen Skedaddle Ranch Rd, W of Skedaddle Ck, .5 mi NE of Spencer Ck Rd. 1310 Comment
  SEINET10450707  Lupinus nevadensis Taylor 1982-5-29 Taylor 4567 Lassen In sage brush scrub along dirt rd parallelling hwy. 395, On its e side, ca 1/2 Mi n of hwy. 395 Jct with scott rd, ca 20 mi n of reno. With castilleja. Comment
  SEINET10452155  Lupinus nevadensis Mary Susan Taylor 1982-5-29 Taylor 4567 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  RSA0005616  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA0005618  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SEINET10486217  Lupinus saxosus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2626 Lassen 6 mi s of adin; along state hwy. 139 Right-of-way; in basalt-clay, grassy road Bank; artemisia-juniper association. 1372 Comment
  SEINET10490228  Lupinus sellulus var. artulus Katherine L. Morris 1973-5-25 Morris 233 Lassen Collected 7.6 mi nw of jct of hwy 36 and 44 on hwy 44, in an area of yellow Pine and incense cedar. Very moist area. Comment
  SEINET10451647  Lupinus sellulus var. sellulus Billy Joe Cox 1971-6-11 Cox 3190 Lassen 6 mi w of susanville, on california hwy. 36; In volcanic soil; association with Pinus ponderosa forest. 1615 Comment
  UC429126  Luzula comosa var. laxa Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  CHSC4269  Luzula macrantha K. R. Stern 1967-6-24 2419 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagel Lake Biological Station. 1554 Comment
  HSC93435  Lythrum portula Vernon H. Oswald, L. Ahart 1996-8-1 8104 Lassen Mtn. Meadows Reservoir SW of Westwood, receding shore NE of Indian Ole Dam 1540 Comment
  JEPS121287  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC342645  Madia citrigracilis John Thomas Howell 1934-7-8 12494 Lassen Spalding's, Eagle Lake 1584 Comment
  UC905682  Madia citrigracilis David D. Keck 1930-7-23 949 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  SD132249  Madia elegans G. Helmkamp 1990-9-23 A 6 Lassen 3.0 miles east of Susanville, along State Road 36. 1340 Comment
  CAS-BOT-BC343694  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia Comment
  SD50990  Madia elegans Darley F. Howe 1960-9-21 Lassen 2 miles north of Janesville on #395 Comment
  CAS-BOT-BC344299  Madia exigua H. D. Ripley; R. C. Barneby 1943-6-13 5716 Lassen South of Johnstonville 1328 Comment
  JEPS126562  Madia exigua Lowell Ahart, John Dittes 2016-6-7 20992 Lassen 110 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC29911  Madia glomerata Robin L. Ondricek 1978-8-26 126 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  JEPS89663  Madia glomerata Dean W. Taylor 1989-8-4 10423 Lassen Hwy. 299 at Muck Valley Rd. ca. 2 mi. w. Nubieber (Modoc Plateau); Modoc Plateau 1539 Comment
  CAS-BOT-BC334690  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC343058  Madia gracilis John Thomas Howell 1973-7-10 49781 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC343059  Madia gracilis John Thomas Howell 1974-7-10 50552 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC512878  Maianthemum stellatum Louella Bass 1973-6-17 120 Lassen Elysian Valley 1325 Comment
  SJSU10452  Maianthemum stellatum H. L. Buckalew 1961-7-9 Lassen spring near Blue Lake, Warner Mts 1828 Comment
  CAS-BOT-BC347440  Malacothrix floccifera Louella Bass 1983-6-2 s.n. Lassen On Sears Road near Janesville Comment
  SEINET11601669 Image available Malacothrix glabrata F. B. Henning 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  UC1567438  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi N Wendel Road, along Skedaddle Ranch Rdoad. 1493 Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CHSC7775  Malva neglecta Beverly J. Wise 1969-5-26 68 Lassen Susanville - 833 Mark St. 1310 Comment
  UC1192360  Marsilea Verne Grant and Irving Schneider 1947-7-31 8219 Lassen irrigation ditch running sw into State Fish and Game nesting area on w end Section 19 Madeline Plain Comment
  UCD18955  Marsilea vestita Raymond D. Ratliff 1965-7-22 23 Lassen Lassen National Forest, Harvey Valley Allot. (HV 78-73). 1706 Comment
  CHSC99286  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-20 14911 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS93831  Matricaria discoidea Vernon H. Oswald and Lowell Ahart 1998-6-4 9138 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  SEINET4671551  Melica bulbosa H. Durio 1979-5-23 s.n. Lassen Adin, Meyers Ranch Comment
  UCD87291  Melica fugax Jack Major 1966-6-24 s.n. Lassen Lassen County (northeastern): Long Valley, 3 miles airline southwest of Patterson Guard Station, Modoc National Forest. Comment
  UCD88630  Melica subulata John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49438 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CHSC30586  Melilotus indicus P. V. Caldwell 1972-6-30 270 Lassen Jct. of Horse Lake Rd. and Hwy. 395. Comment
  HSC81799  Mentzelia albicaulis Thomas W. Nelson, Jane Nelson 1980-7-6 6025 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  JEPS117562  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
  NY694984  Mentzelia albicaulis N. H. Holmgren 1980-7-4 9507 Lassen Observation Peak, south side of the mountain, 18 km (11 mi) air distance east of Ravendale 1890 Comment
  JEPS124816 Image available Mentzelia albicaulis Joe Ammirati 1964-6-30 70 Lassen N. of Susanville ca. 12.3 mi. on HW 139. Comment
  JEPS124818 Image available Mentzelia albicaulis M. L. Wheelis 1964-6-30 128 Lassen 11.5 miles north fo Susanville on highway 139. Comment
  UCD117207  Mentzelia albicaulis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CHSC29933  Mentzelia dispersa Robin L. Ondricek 1978-6-22 67 Lassen In rocky soil among Jeffrey Pines at the n end of Mahogany Lake. 2057 Comment
  RSA715543  Mentzelia dispersa L. Ahart 2005-6-1 s.n. Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  POM260353  Mentzelia dispersa C. L. Hitchcock 1940-5-26 6606 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  RSA152663  Mentzelia dispersa I. L. Wiggins, Dorothy Wiggins 1961-6-10 16323 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  SBBG2836  Micranthes integrifolia H. and M. Dearing 1938-6-30 2232 Lassen Box 20 mi N of Susanville [Hwy 44] 1066 Comment
  CHSC99301  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15036 Lassen About 220 yards west of the road levee, open dry meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  CHSC99143  Microseris nutans Lowell Ahart; John Dittes 2008-6-19 14871 Lassen Along a small wash, 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
  HSC28899  Microseris nutans D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19168 Lassen 3 mi. N of Westwood Comment
  UC1070116  Microseris nutans Robert W. Gardner 1937-6-16 G- 14 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  CAS-BOT-BC349296  Microseris nutans Parkison 1916-6-21 41 -a Lassen Lassen National Forest. Meadow Border, Patterson Camp 1706 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
  JEPS107307  Mimulus arvensis Lowell Ahart, John Dittes 2005-6-1 11900 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC27028  Mimulus guttatus Mrs. C. C. Bruce June 1898 2276 Lassen Shumway Comment
  UC886176  Mimulus guttatus A. A. Heller 1938-6-22 15183 Lassen 1 mi s Westwood 1524 Comment
  SEINET10570320  Mimulus guttatus Jeffrey Huber 1971-6-11 Huber 320 Lassen 3 mi e of westwood, on calif hwy 36, in volcanic soils, in pinus jeffreyi. 1608 Comment
  JEPS10776  Mimulus moniliformis Brown and Wieslander 1922-7-30 17 Lassen near Martin Springs Comment
  UC27054  Mimulus moniliformis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  POM43476  Mimulus moschatus var. longiflorus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  JEPS29741  Mimulus nanus var. mephiticus Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8496 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  UC886157  Mimulus nanus var. mephiticus A. A. Heller 1938-6-22 15188 Lassen about 1 1/2 mi s Westwood 1524 Comment
  HSC81185  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  RSA536393  Mimulus pygmaeus Rick Crowther 1991-5-28 s.n. Lassen Swains Hole Reservoir, 3 miles N of Hwy 44 off USGS Road 33N18. 1619 Comment
  GMDRC6951  Monardella odoratissima subsp. glauca J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31425 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  UCR268963  Monardella odoratissima subsp. glauca Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31425 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  CHSC29865  Monardella odoratissima subsp. pallida Robin L. Ondricek 1978-8-9 122 Lassen 1977 Burn, .1 mi w of intersection with road which passes Colman Lake. [Sanders 2010 annotation: Monardella odoratissima Benth. ssp. pallida X ssp. glauca.] 1889 Comment
  CHSC29873  Monardella odoratissima subsp. pallida Robin L. Ondricek 1978-6-27 74 Lassen 1977 Burn, .1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  HSC14276  Monardella odoratissima subsp. pallida M. T. Milligan 1964-7-16 133 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC25488  Monardella odoratissima subsp. pallida M. S. Baker and Frank Nutting 1894-7-28 Lassen mts. s Eagle Lake Comment
  CAS-BOT-BC222147  Monardella odoratissima subsp. pallida W. Lessig 1967-7-20 28 Lassen 2 mi s of Five Corners on w side of rd to Dean's Meadow 1828 Comment
  HSC14280  Monardella villosa D. E. Anderson 1963-8-25 2800 Lassen 3 mi. N of Cromberg along Hwy. Alt 40 1372 Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 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
  CAS-BOT-BC444696  Montia chamissoi Louella Bass 1977-6-12 77 -3 Lassen Elysian Valley 1325 Comment
  UC1586593  Montia dichotoma Vernon H. Oswald 1991-5-28 4618 Lassen 5 mi ne of Bieber (Wayman Barn at the w end of Hunt Road, Ash Creek Wildlife Area, flat east of barn); Ash Creek Wildlife Area 1264 Comment
  CHSC64892  Montia fontana subsp. chondrosperma Vernon H. Oswald 1995-6-26 6925 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally abundant, forming mats on wet rocks in a shallow, roadside streamlet. 1712 Comment
  JEPS94476  Montia linearis Vernon H. Oswald and Lowell Ahart 1997-5-27 8497 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 the road); Forest Route 38N04 1546 Comment
  RSA122965  Montia linearis L. R. Short, Wm Gansberg 1936-6-8 s 392 Lassen Burgess Spring Exp. Range 1744 Comment
  UC773867  Montia linearis L. R. Short, Wm. Gansberg 1936-6-8 S 392 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1743 Comment
  CHSC44580  Muhlenbergia asperifolia Lowell Ahart; John Thomas Howell 1974-7-9 519 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  UCD86528  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UC589840  Muhlenbergia filiformis H. S. Yates 1936-8-12 6081 Lassen McKenzie Meadow Susanville Quadrangle 1524 Comment
  UC60840  Muhlenbergia filiformis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC163551  Muhlenbergia jonesii Milo S. Baker Lassen Eagle Lake Comment
  CHSC117514  Muhlenbergia richardsonis Lowell Ahart; John Dittes 2016-7-13 21146 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  RSA129677  Muhlenbergia richardsonis G. A. Fischer, Irwin Johnson 1933-7-12 F- 196 Lassen Lassen National Forest; Grass Valley. 1695 Comment
  RSA268991  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1972-7-24 5812 Lassen Lassen National Forest; 17 miles NW of Susanville, along Hwy 44 1128 Comment
  SJSU4296  Muhlenbergia richardsonis J. W. Tilden 1960-6-27 1511 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  UCD39732  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 Comment
  CHSC91191  Muilla transmontana Lowell Ahart; John Dittes 2005-6-1 11855 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  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
  UC1483824  Muilla transmontana G. Schoolcraft 1980-6-6 255 Lassen sw Herlong; Bird Canyon 1341 Comment
  CAS-BOT-BC515653  Muilla transmontana John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49163 Lassen Elysian Valley northwest of Jamesville 1051 Comment
  CHSC91312  Myosotis discolor Lowell Ahart; John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  NY492639  Myosurus apetalus K. L. Chambers 1963-5-4 2026 Lassen Highway 395, 10 miles north of junction with Alt. Highway 40 (later renumbered as Highway 70). Comment
  CHSC27619  Myosurus apetalus var. borealis Robert A. Schlising 1978-7-30 3331 Lassen S of Eagle Lake at Deans Ridge. Margin of reservoir. 1950 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
  UC72894  Myosurus minimus Milo S. Baker 1894-7-1 Lassen Dixie Mts Comment
  CAS-BOT-BC83321  Myosurus minimus Clarence R. Quick 1962-6-17 62 25 C Lassen Swains Hole, a man-made pond south of Blacks Mountain Experimental Station. 1554 Comment
  CHSC4844  Myriophyllum sibiricum R. Carter 1967-7-13 592 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CHSC5257  Myriophyllum sibiricum A. Santos 1946-7-12 Lassen Eagle Lake. Pine Creek Slough. 1584 Comment
  RSA233733  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39134 Lassen Said Valley Reservoir. Comment
  RSA0084057  Nama aretioides var. californica Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC14186  Nama densa M. S. Taylor 1974-7-12 305 Lassen Scattered around Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  JEPS1373  Nama densa John G. Lemmon 1893-5-28 Lassen Susanville Comment
  POM126780  Nama densa Franklin P. Nutting s.n. Lassen Eagle Lake. Comment
  RSA508616  Narthecium californicum Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  HSC95152  Nasturtium officinale Gordon Leppig 1998-7-12 959 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS87403  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake rd (Lassen A1) ca 3 mi w Eagle Lake (0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  UC125019  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  RSA136592  Navarretia breweri David B. Dunn 1956-7-3 11921 Lassen On Highway 395. Comment
  JEPS28649  Navarretia capillaris George W. Gillett 1957-7-21 861 Lassen 300 yards n summit Juniper Lake-Cameron Meadow trail (Lassen Volcanic National Park); , Juniper Lake-Cameron Mdw trai 2118 Comment
  UC1124159  Navarretia divaricata A. Simontacchi 1940-5-28 777 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  SEINET3894761  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -073 Lassen Nubieber. Adjacent to New Cemetary Road (1.1 miles west of Babcokc Rd in Nubieber) just beyond its jct with Hwy 299, between Hwy and road.; 0 Comment
  UC1058207  Navarretia intertexta C. McMillan 1949-6-15 1540 Lassen 5 mi w Bieber Comment
  UC1124160  Navarretia intertexta A. Simontacchi 1940-6-30 904 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  POM74488  Navarretia intertexta Marcus E. Jones 1897-7-1 10134 Lassen 7 miles south of Susanville at Perkin's Ranch 1524 Comment
  JEPS114394  Navarretia intertexta subsp. propinqua Lowell Ahart, John Dittes 2008-6-22 15031 Lassen 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
  UC1594649  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5111 Lassen s side Hwy. 44 (Bridge Creek entering McCoy Flat Reservoir, between Old Station and Susanville); McCoy Flat Reservoir, Bridge Creek 1691 Comment
  UC913382  Navarretia intertexta subsp. propinqua G. Thomas Robbins 1945-9-24 2148 Lassen along Susanville to Pittville highway; Lassen National Forest 1737 Comment
  SJSU11522  Navarretia intertexta subsp. propinqua J. W. Tilden 1960-6-27 1519 Lassen by Moonlight Rd 5 mi E of Westwood 1524 Comment
  UCD48456  Navarretia intertexta subsp. propinqua G. L. Stebbins Jr. 1949-8-6 4001 Lassen Hog flat, NW of Susanville. 1676 Comment
  UC909068  Navarretia leucocephala subsp. bakeri G. L. Stebbins Jr. 1949-8-6 4003 b Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  HSC63964  Navarretia leucocephala subsp. minima Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 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
  UC1191630  Navarretia leucocephala subsp. minima Malcolm A. Nobs and S. Galen Smith 1949-5-29 756 Lassen Nubieber, on the Great Northern Railway Nubieber Comment
  UC1609451  Navarretia linearifolia subsp. linearifolia 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
  JEPS120028  Navarretia propinqua Lowell Ahart, John Dittes 2012-7-9 18303 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET10464780  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 Dempster 1673 Lassen Gold Run Creek about 4 miles southwest of junction with Richmond Road, south ofSusanville Comment
  UCSB30253  Nemacladus interior Hardham, Clare 1961-6-16 Lassen Gold Run Creek south of Susanville Comment
  JEPS114643  Nemophila pedunculata Lowell Ahart, John Dittes 2008-6-20 14918 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
  UCSC000580  Nemophila pedunculata L. R. Short, W. Gansberg 1936-6-8 393 Lassen Burgess Spring Experiment Range 1743 Comment
  SEINET10756782  Nestotus stenophyllus Billy Joe Cox 1971-6-2 Cox 3105 Lassen Approx. 30 mi. N of Susanville, on CA Hwy. 139, in basalt. 1646 Comment
  CHSC65361  Nicotiana attenuata Vernon H. Oswald; Lowell Ahart 1995-8-14 7182 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  UC1125128  Nicotiana attenuata E. Sawyer 1935-6-27 242 Lassen 2.4 mi ne Beckwith Pass; Sierraville Quad. 1615 Comment
  UC7442  Nitrophila occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3326 Lassen Honey Lake Valley 1219 Comment
  UC1924578  Nothocalais troximoides Debra Valov 2006-5-29 2006029 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UC584293  Nothocalais troximoides G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2309 Lassen w Milford; crest of range head of Stony Ridge 1950 Comment
  UC682109  Nothocalais troximoides G. L. Stebbins Jr. with A. A. Beetle 1942-5-30 3238 Lassen on road to Adin 5.2 mi e Bieber 1280 Comment
  UCD134648  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen South of CR. 512, south of Red Rock Lake. 1828 Comment
  UC8805  Nuphar lutea subsp. polysepala J. Burtt Davy Jun 17 1897-Jun 24 1897 3336 Lassen Honey Lake Valley, deep pools of Susan River Susan River; Honey Lake Valley, Susan River 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
  JEPS124837 Image available Oenothera deltoides J. Yamanaka 1965-7-12 122 Lassen U. S. Highway 395, 2.6 miles N. of Milford Sandy soil. Comment
  SEINET10453107  Oenothera deltoides Mary Susan Taylor 1982-6-12 Taylor 4652 Lassen T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft. 1280 Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  RSA0011497  Orobanche Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46972 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  UCR244039  Orobanche fasciculata Jim Andre 1993-6-1 19709 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  SD7034  Orthocarpus copelandii var. cryptanthus Mrs. R. M. Austin 1882-8-9 Lassen Hills - near Hot Spring, Val. Comment
  CHSC23505  Orthocarpus cuspidatus subsp. cryptanthus Wayne O. Baum 1970-7-7 70 -2 Lassen Top of Gallatin Peak. 2117 Comment
  RSA165526  Orthocarpus hispidus Clare B. Hardham 1961-6-17 7501 Lassen Baxter Creek S of Susanville. Comment
  SEINET12329637  Orthocarpus hispidus N. H. Holmgren, Holmgren, P. K. 1980-1 9483 Lassen US 395, 7.4 km S of Ravendale 1620 Comment
  OBI75887  Osmorhiza berteroi Anthony Baniaga 2011-8-16 501 Lassen Lassen Natl Forest. Just N of intersection 32N10H with F.S. 10. Red Cinder quad T30N R8E sec 18 NW of NW 1905 Comment
  SD232782  Oxytheca dendroidea subsp. dendroidea Greg R. Ballmer 1993-7-31 Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, ca. 2 - 5 mi. (airline) W of Nevada border. Comment
  HSC68931  Packera eurycephala Gary Schoolcraft 1980-6-5 251 Lassen N base of Snowstorm Mtn. 1585 Comment
  UCD134780  Packera eurycephala Michael A. Vincent 1999-6-9 8581 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
  JEPS25533  Packera eurycephala var. eurycephala Rimo Bacigalupi with Lincoln Constance 1959-6-16 7147 Lassen 3.7 mi s junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  OBI76965  Packera streptanthifolia Anthony Baniaga 2011-8-4 488 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill, ca. 40 ft N of 30N21. Swain Mtn Quad. T30N R8E sec 5 SW of SW 1918 Comment
  SEINET10537860  Paeonia brownii Paul Gallian, David B. Dunn 1971-6-2 Gallian 503 Lassen 6 mi n of hallelujah hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CDA5733  Pectocarya penicillata L. Ahart, J. Dittes 2005-6-1 11907 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
  JEPS68204  Pectocarya penicillata W. L. Jepson 1918-8-2 7770 Lassen Beckwith Pass 1463 Comment
  CHSC64871  Pectocarya setosa Vernon H. Oswald; Lowell Ahart 1995-6-19 6892 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. On a slope on the n side of the road. 1383 Comment
  SD6612  Pedicularis attollens Mrs. R. M. Austin 1882-8-9 Lassen Kings Valley Comment
  UC447220  Pedicularis groenlandica Franklin P. Nutting Lassen Pine Creek Comment
  HSC20946  Pedicularis semibarbata H. E. Parks, S. T. Parks Jun 1928 237 Lassen Drakesbad, Mt. Lassen, E side 1524 Comment
  UC2042972  Pedicularis semibarbata Barbara Ertter 1990-5-13 8965 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  RSA6481  Penstemon D. D. Keck 1930-7-23 953 Lassen 4 miles west of Susanville, nearly to the divide; but not seen on western watershed. 1463 Comment
  CHSC12945  Penstemon cinicola K. R. Stern 1974-6-26 5852 Lassen Vicinity of Cold Spring, e of Butte Lake, Cinder Cone trail, Lassen Volcanic National Park. 1859 Comment
  HSC68837  Penstemon deustus Gary Schoolcraft 1979-6-26 97 Lassen Small peak N of Radeo Flat 1951 Comment
  SD77352  Penstemon deustus Francis W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1096 Comment
  RSA715656  Penstemon deustus subsp. heterander L. Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  CHSC77237  Penstemon deustus var. pedicellatus G. Schoolcraft 1998-7-8 2749 Lassen E. of Camel Rock near Secret Valley area. 1463 Comment
  CHSC25147  Penstemon gracilentus B. Anthony 1967-7-10 263 Lassen Deans Meadow, 6.8 mi from Eagle Lake Biological Station. 1920 Comment
  CHSC57320  Penstemon gracilentus Mary Meyer 1980-7-21 Lassen 2072 Comment
  JEPS27801  Penstemon gracilentus Frances D. Payne 1929-7-12 81 Lassen Lost Lake e drainage..Warner Range, Skunkcabbage and Silver Creeks... (watersheds of Skunkcabbage and Silver Creeks, eastern drainage of the s end of the Warner Range) 2286 Comment
  UC1035884  Penstemon gracilentus Annie M. Alexander and Louise Kellogg 1946-8-13 5157 Lassen w side of Eagle Lake 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
  UC1137680  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen National Forest 1783 Comment
  NY603846  Penstemon humilis var. humilis N. H. Holmgren 1978-6-11 8927 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 miles) northeast of Rye Patch Canyon summit, 21 km (13 miles) airline distance east-southeast of Ravendale. 1700 Comment
  UCD124278  Penstemon laetus Beecher Crampton 1964-6-26 7082 Lassen ca. 32 miles northwest of Susanville west end of Harvey Valley. 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
  UC725482  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen w Westwood; w of Westwood 1524 Comment
  NY627268  Penstemon neotericus C. G. Gulling 1905-1 s.n. Lassen Big Meadows 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
  CHSC64810  Penstemon roezlii Vernon H. Oswald 1995-5-31 6793 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  NY650095  Penstemon roezlii N. H. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 miles) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 miles) airline distance southeast of Ravendale. 1580 Comment
  NY650104  Penstemon roezlii J. T. Howell 1977-6-22 52402 Lassen North end of Eagle Lake 1585.0 Comment
  UC423646  Penstemon roezlii David D. Keck 1930-7-23 954 Lassen 12 mi w Susanville; Sierra Nevada 1675 Comment
  NY641729  Penstemon roezlii A. J. Cronquist 1959-6-17 8470 Lassen 50 miles southeast of Susanville. 1371.6 Comment
  CAS-BOT-BC239502  Penstemon rydbergii var. oreocharis Al Simontacchi 1940-6-3 792 Lassen Lassen National Forest, 8.3 miles SE of Alcohol Jacks Cabin 1706 Comment
  CAS-BOT-BC239506  Penstemon rydbergii var. oreocharis L. B. Barlow 1967-7-4 89 Lassen 5 mi. south of Eagle Lake Biological Sation on Gallatin Beach Road 1737 Comment
  CAS-BOT-BC239511  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219 Comment
  CHSC27679  Penstemon rydbergii var. oreocharis J. D. Prouty 1978-7-27 28 Lassen W of Eagle L. in small swale just n of Rd 105 on E margin of Champs Flat. 1694 Comment
  CHSC89731  Penstemon rydbergii var. oreocharis L. P. Janeway 2004-6-26 8161 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  CHSC99300  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2008-6-20 14919 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS124372  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2015-7-13 20316 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SBBG66488  Penstemon rydbergii var. oreocharis S. W. Hutchinson -Jun-1925 1088 Lassen Eagle Lake 1554 Comment
  UC1063479  Penstemon rydbergii var. oreocharis Robert W. Gardner 1937-6-20 G- 19 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UC1137681  Penstemon rydbergii var. oreocharis George A. Fischer and Irwin H. Johnson 1933-7-12 F 228 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  UC696714  Penstemon rydbergii var. oreocharis David D. Keck 1938-6-22 15182 Lassen one mi e Westwood; e of Westwood 1524 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
  CHSC12411  Penstemon speciosus Lynn R. Thomas 1969-6-20 135 Lassen Just above Deans Meadow, ca. 6 mi. s of E. L. B. S. 2011 Comment
  CHSC37347  Penstemon speciosus J. D. Prouty 1978-7-10 20 Lassen Roadcut, W slope Dean's Ridge, S of Eagle L. 1889 Comment
  CHSC64811  Penstemon speciosus Vernon H. Oswald 1995-5-31 6812 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.0 mi e of Hwy. 395, between Litchfield and Ravendale. 1341 Comment
  HSC81485  Penstemon speciosus Thomas W. Nelson, Jane Nelson 1980-7-6 6018 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  JEPS28986  Penstemon speciosus Frances D. Payne 1929-7-12 86 Lassen ridge above Lost Lake (southern end Warner Range); , ridge above Lost Lake 2286 Comment
  NY661040  Penstemon speciosus G. W. Gillett 1953-7-1 273 Lassen Fredonyer Pass, Highway 36. Lassen National Forest. 1752.6 Comment
  RSA121810  Penstemon speciosus L. R. Short, J. Warren 1936-6-26 S- 357 Lassen Burges Spr. Exp. Range. 1845 Comment
  RSA17709  Penstemon speciosus Elmer I. Applegate 1934-5-4 8932 Lassen South end of Secret Valley Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC773855  Penstemon speciosus L. R. Short and J. Warren 1936-6-26 S- 357 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  NY660833  Penstemon speciosus F. W. Pennell 1940-6-10 25786 Lassen Route 36, 3 miles northwest of Westwood 1645.9 Comment
  RSA121811  Penstemon speciosus G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 220 Lassen Lassen Forest. 1707 Comment
  RSA38458  Penstemon speciosus Philip A. Munz 1947-5-19 11877 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  RSA401877  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi north of jct with Route 24, northeast of Plumas. 1524 Comment
  CHSC43495  Penstemon sudans Lowell Ahart; John Thomas Howell 1974-7-9 531 Lassen Along Eagle Lake Road, about 3 1/2 miles north-west of Susanville. 1584 Comment
  NY661796  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass 1615.4 Comment
  UCD55297  Penstemon sudans Ellen Dean; Gary Schoolcraft 2006-5-16 3118 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1283 Comment
  RSA0006234  Penstemon sudans Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 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
  RSA594173  Peraphyllum ramosissimum S. O. Mattoon 1974-6-2 42 Lassen Cottonwood Mountains: Vicinity of Dodge Res.; Lassen County Road 502. 1829 Comment
  NY1102238  Perideridia bolanderi subsp. bolanderi W. W. Eggleston 1911-5-29 6704 Lassen Vicinity of Doyle Station Comment
  UC1087229  Perideridia bolanderi subsp. bolanderi Peter H. Raven and Otto T. Solbrig 1958-6-16 13252 Lassen 4.5 mi e Westwood Comment
  UC1137777  Perideridia bolanderi subsp. bolanderi George A. Fischer and Irwin H. Johnson 1933-7-12 F 210 Lassen Grass Valley Lassen National Forest 1722 Comment
  HSC73083  Perideridia gairdneri subsp. gairdneri Cindy Prouty 1978-7-11 19 Lassen Papoose Creek, S of Gallatin 1585 Comment
  UC1390003  Perideridia oregana John Weiler 1963-8-2 63236 Lassen along Hwy 299 between Bieber and Nubieber Comment
  HSC103641  Perideridia parishii subsp. latifolia Thomas W. Nelson, Jane Nelson 1985-8-10 8017 Lassen Along north side of Silver Lake 1829 Comment
  SEINET5845147  Peritoma platycarpa J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  CHSC30561  Persicaria Sori H. Shad 1970-6-19 8 Lassen Found on pine creek, 50 yard below california fish and game cambine [sic[. 1524 Comment
  HSC28828  Phacelia adenophora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19305 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC1401312  Phacelia adenophora D. B. Dunn 1956-7-3 11917 Lassen on hwy 395 31 mi ne Johnstonville (n side of flats) Comment
  UCD120257  Phacelia adenophora Arnold Tiehm; Margaret Williams, Jan Nachlinger 1988-6-2 11701 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas. 1386 Comment
  CHSC64789  Phacelia gymnoclada Vernon H. Oswald 1995-5-24 6783 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. 1219 Comment
  JEPS118499  Phacelia hastata A. Holmen 2011-8-23 CA 320 -94 Lassen South US Hwy 295 to Termo and turn left onto Lassen Co. Rd 508 (Juniper Ridge Rd). Follow this road for 11 miles to Cold Springs Rd and head north for 3.3 miles. Turn left and travel 1.5 miles. Collection site will be to the west heading up draw. Comment
  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
  NY1057241  Phacelia heterophylla N. H. Holmgren 1980-7-4 9503 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  POM195121  Phacelia heterophylla subsp. virgata D. D. Keck 1930-7-23 956 Lassen Fifteen miles west of Susanville. 1524 Comment
  RSA152678  Phacelia heterophylla subsp. virgata I. L. Wiggins, Dorothy Wiggins 1961-6-11 16362 Lassen On ridge and along road, near northeast end of Eagle Lake. Comment
  NY1057845  Phacelia humilis B. J. Ertter 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  SEINET12765228  Phacelia humilis Vernon H. Oswald, Lowell Ahart 1997-6-24 8620 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a impoundment on Forest Rd. 29N43, ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary.; 0 2036 Comment
  SEINET5536709  Phacelia humilis N. H. Holmgren, P. K. Holmgren 1978-6-11 8908 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  UC133065  Phacelia humilis T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC145033  Phacelia inundata John Thomas Howell 1934-7-8 12510 Lassen Spalding's, Eagle Lake Comment
  UC764434  Phacelia inundata Verne Grant 1947-9-5 8374 Lassen nw shore of lake by Sam Webb's place (Spaldings); Eagle Lake Comment
  CHSC33362  Phacelia linearis Wayne O. Baum 1971-7-5 71 -17 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC5265  Phacelia linearis J. Wolf 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  RSA152684  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16357 Lassen On hillside near northeast end of Eagle Lake. Comment
  NY1056435  Phacelia lutea var. glandulifera R. R. Halse 1974-6-27 1055 Lassen In a road cut along U.S. Highway 395, 5.4 miles south of Ravendale 1620 Comment
  JEPS4041  Phacelia mutabilis Frances D. Payne 1929-7-12 85 Lassen ridge above Lost Lake; Warner Mountains 2438 Comment
  CAS-BOT-BC141448  Phacelia ramosissima var. eremophila John Thomas Howell 1934-6-10 11873 Lassen Janesville Comment
  CHSC64879  Phacelia thermalis Vernon H. Oswald; Lowell Ahart 1995-6-19 6902 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395. 1444 Comment
  JEPS79143  Phacelia thermalis L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  NY1057983  Phacelia thermalis H. D. D. Ripley 1943-6-15 5761 Lassen Along Smoke Creek northeast of Viewland 1311 Comment
  RSA334843  Phacelia thermalis Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8595 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA74152  Phacelia thermalis J. T. Howell 1934-6-16 12222 Lassen Bieber Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  JEPS28271  Phleum alpinum George W. Gillett 1957-7-29 950 Lassen along trail between Butte Lake and Snag Lake (Lassen Volcanic National Park); , btw Butte Lake and Snag Lake 1859 Comment
  CHSC35954  Phlox diffusa M. S. Taylor 1982-5-7 4430 Lassen Reno Junction and along old road parralleling Hwy 70, just e of Beckwourth Pass. 1676 Comment
  UC1191212  Phlox diffusa Lloyd Swift 1928-5-23 Lassen Bassi Hell Hole Lassen National Forest Comment
  JEPS29740  Phlox speciosa subsp. occidentalis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8495 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  RSA0029644  Phlox speciosa subsp. occidentalis Anthony Baniaga 2011-6-11 333 Lassen Lassen National Forest. At intersection of A1 and Sydnes Rd, north side of Eagle Lake. 1623 Comment
  UC23964  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  CHSC106569  Phlox stansburyi K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  CHSC36482  Phlox stansburyi Margaret E. Halloran 1982-6-4 7 Lassen 3 1/2 mi s of jct of 5.17 and 5.16 on 5.17. Comment
  CHSC91334  Phlox stansburyi Lowell 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 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  HSC17069  Phlox stansburyi Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  CDA40284  Phlox stansburyi T. C. Fuller 1963-6-11 10662 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  RSA83065  Phlox stansburyi Verne Grant, Alva Grant 1947-5-5 7979 Lassen North of Honey Lake Valley Comment
  CHSC61141  Phoenicaulis cheiranthoides Vernon H. Oswald; Lowell Ahart 1993-5-12 5386 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
  CHSC76837  Phoradendron densum L. P. Janeway; B. Castro, Loren Gehrung 1999-10-10 6595 A Lassen High Cascade Range. Near Eiler Creek between Fraener Peak and Horse Heaven Buttes; at Cypress Trailhead into Thousand Lakes Wilderness Area. 1639 Comment
  CAS-BOT-BC250985  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia Comment
  UC1100404  Phragmites australis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1489 Lassen 1 mi s Doyle; Long Creek Comment
  UCD89832  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395. Southeast of Constantia. Comment
  CDA33273  Phyllodoce breweri Margaret Bellue 1938-8-1 Lassen Lassen National Park: Bumpas Hell 0 Comment
  CHSC60805  Pilularia americana Vernon H. Oswald; Lowell Ahart 1993-6-28 5623 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
  RSA772875  Pilularia americana R. F. Thorne, Larry E. DeBuhr 1975-8-22 47209 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC4886  Pinus contorta subsp. murrayana Bill Wilson 1967-7-15 204 Lassen Collected at the edge of Silver Lake, 20 mi. NW of Susanville. 1889 Comment
  CHSC23508  Pinus jeffreyi Wayne O. Baum 1971-7-16 71 -74 Lassen E. slope of Gallatin Peak. 2072 Comment
  CAS-BOT-BC227995  Plagiobothrys David D. Keck; J. Clausen 1935-6-24 3731 Lassen 10 miles S of Likely (Modoc County) 1464 Comment
  UC1594603  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1992-7-16 5113 Lassen between Old Station and Susanville (on s side of Hwy 44, Bridge Creek entering McCoy Flat Reservoir); Bridge Cree, McCoy Flat Reservoir 1691 Comment
  UC1609179  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5626 Lassen e of Poison Lake (n of Hwy 44 along Rd 33N47 at ne end of Little Harvey Valley, on small branch of Pine Creek, between Champs Flat and Harvey Valley); Little Harvey Valley, Pine Creek 1737 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
  JEPS119652  Plagiobothrys cusickii Lowell Ahart, John Dittes 2012-7-9 18284 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127173  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-15 21212 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127274  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-13 21114 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CAS-BOT-BC224977  Plagiobothrys hispidulus Peter H. Raven; Otto T. Solbrig 1958-6-17 13286 Lassen Along US Highway 395, 1.8 miles S of Ravendale Comment
  CHSC112430  Plagiobothrys hispidulus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18730 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
  CHSC115562  Plagiobothrys hispidulus Lowell Ahart; John Dittes 2015-7-13 20318 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
  CHSC29970  Plagiobothrys hispidulus R. A. Schlising 1979-6-7 3452 Lassen S end of Eagle Lake, at Papoose Creek and Meadow in Lassen National Forest. In streambed. 1584 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
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest Comment
  CAS-BOT-BC224970  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  UC25081  Plagiobothrys hispidus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  RSA0001862  Plagiobothrys humifusa Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC228462  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen Along edge of Moll Res. W of Ash Valley 1606 Comment
  JEPS124380  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2015-7-13 20306 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC708090  Plagiobothrys reticulatus McKee and Westover 1918-6-13 12 Lassen Susanville 1280 Comment
  RSA39738  Plagiobothrys scouleri var. hispidulus P. A. Munz 1947-5-20 11891 Lassen Milford. 1265 Comment
  JEPS121291  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2013-7-22 18873 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS107448  Plagiobothrys tenellus Lowell Ahart, John Dittes 2005-6-1 11883 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction 1438 Comment
  POM89198  Plagiobothrys tenellus Milo S. Baker 1890-1 s.n. Lassen Milford. Comment
  JEPS124568 Image available Plagiobothrys tener Dixie Funnell 1965-7-13 144 Lassen 4.2 miles west of Dead Horse Summit. HW 89. Comment
  CHSC96724  Platanthera leucostachys Gordon Leppig 1998-7-12 941 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  UC890150  Plectritis brachystemon C. L. Hitchcock 6604 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  SEINET8658736  Plectritis macrocera C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CHSC31979  Pleiacanthus spinosus L. Ahart 1974-7-9 547 Lassen Along Hwy 395, 1 mi n of jct of Hwys 395 and 70. 1524 Comment
  CHSC50824  Pleiacanthus spinosus Vernon Oswald; Lowell Ahart 1990-7-25 4395 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. Roadside bank. 1463 Comment
  JEPS36547  Pleiacanthus spinosus W. L. Jepson 1918-8-2 7790 Lassen Long Valley 1371 Comment
  UC1069840  Pleiacanthus spinosus H. S. Yates 1936-8-11 6064 Lassen near Milford; Amedee Quad. 1280 Comment
  CAS-BOT-BC261046  Poa Clarence R. Quick 1961-6-21 61 -30 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  UCD92172  Poa A. A. Beetle 1941-6-28 2815 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  UCD92181  Poa J. B. Davy 17-24 Jun 1897 3319 Lassen Honey Lake Valley. Byer's Ranch. Comment
  SEINET10863882  Poa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17758 Lassen Approx. 12 mi S of Adin on Calif. Hwy 139, in basalt & clay; along edge of road on rolling knoll, in Artemesia_Juniper assoc. 1372 Comment
  CAS-BOT-BC254942  Poa bulbosa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49187 Lassen Elysian Valley NW of Janesville 1325 Comment
  CAS-BOT-BC254946  Poa bulbosa R. E. Frenkel 1964-7-12 665 Lassen On California Highway 299, 1.5 miles W of Bieber 1249 Comment
  UCD90701  Poa bulbosa F. H. Taylor 1932-5-1 s.n. Lassen India Valley. Comment
  CAS-BOT-BC255034  Poa compressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49506 Lassen Elysian Valley, W of Janesville 1325 Comment
  CHSC101048  Poa cusickii subsp. cusickii John Dittes 2008-5-22 1525 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace and toe-slope on northeast side of Willow Creek. 483 Comment
  JEPS120878  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18780 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1533157  Poa cusickii subsp. cusickii G. Schoolcraft 1986-6-25 1644 Lassen 3 mi nw Termo 1615 Comment
  SEINET10524396  Poa fendleriana Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 883 Lassen Collected 3 mi N of Milford, Calif. on Hwy 395 at Honey Lake campgrounds. Comment
  CHSC61599  Poa pratensis Arthur C. Barrett 1915-6-3 18 Lassen Plumas National Forest. Laufman Ranger Station. Meadow. 1463 Comment
  UCD91956  Poa pratensis R. Tofsrud 1947-7-24 213 Lassen 13 miles E of Madeline. Comment
  CAS-BOT-BC255025  Poa secunda Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 Lassen 13.5 miles E of Susanville Comment
  SD34460  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 miles west of Chester, rte. 36, mountain meadow near small stream Comment
  CAS-BOT-BC247052  Poa secunda subsp. juncifolia Ralph K. Gierisch 1968-7-11 3352 Lassen Lassen National Forest, Harvey Valley - Dixie Spr. 1706 Comment
  UC1024949  Poa secunda subsp. juncifolia Leo Whitney 1935-6-27 3317 Lassen ca 13 mi w of n end Eagle Lake; Squaw Valley Comment
  UC1136986  Poa secunda subsp. juncifolia L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experimental Range; Lassen Forest 1798 Comment
  UC699670  Poa secunda subsp. juncifolia Gus Hormay 1944-7-2 Lassen Halls Flat Comment
  UCD92385  Poa secunda subsp. juncifolia William Martin 1963-7-18 s.n. Lassen 3-4 miles S of Doyle. Long Valley Creek, Rowland Ranch. 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
  HSC22383  Poa secunda subsp. secunda D. E. Anderson 1969-7-5 4997 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UC1132883  Poa secunda subsp. secunda A. Simontacchi 1940-5-13 697 Lassen 4.6 mi sw of B. M. 7310 on Blacks Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC70684  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UC70959  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Comment
  UCD90488  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  UCD92016  Poa secunda subsp. secunda A. H. Shunk 1923-1 14 Lassen Hayden Hill. Comment
  UC1024809  Poa wheeleri Leo Whitney 1935-6-16 3273 Lassen ca 15 mi w Eagle Lake (Crater Lake); Lassen Nat'l Forest 2133 Comment
  UC73604  Polemonium occidentale Milo S. Baker 1894-1 Lassen Bridge Creek Comment
  CHSC27710  Polyctenium fremontii Robert A. Schlising 1978-7-1 3305 Lassen S of Eagle Lake at N side of Mahogany Lake. 2060 Comment
  RSA0004885  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  CHSC117541  Polygonum aviculare Lowell Ahart; John Dittes 2016-7-13 21133 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS83272  Polygonum aviculare J. D. Jokerst 1983-7-24 1877 Lassen nw Ravendale; Madeline Plains 1615 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
  UC1536794  Polygonum bistortoides Gordon H. True Jr. 1939-6-15 1036 Lassen w Grasshopper Valley; Bullard Lake Comment
  CAS-BOT-BC414487  Polygonum douglasii G. Schoolcraft 1989-6-19 1918 Lassen Ash Valley RNA/ACEC Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC6681  Polygonum douglasii subsp. spergulariiforme M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  HSC31363  Polygonum parryi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19196 Lassen Harvey Valley near Cone Springs Comment
  UC1603209  Polygonum polygaloides J. Guardino 1993-6-9 281 B Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603212  Polygonum polygaloides J. Guardino 1993-5-22 171 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  JEPS120876  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18732 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1137591  Polygonum polygaloides subsp. confertiflorum A. Simontacchi 1940-6-15 875 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1520661  Polygonum polygaloides subsp. confertiflorum Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9466 Lassen along US 395 5.6 km (3.5 mi) s Madeline; Madeline Plains 1620 Comment
  UC1136189  Polygonum polygaloides subsp. kelloggii A. Simontacchi 1940-6-4 807 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  POM203797  Polygonum sawatchense J. T. Howell 1934-7-9 12528 Lassen Harvey Valley. Comment
  CHSC110775  Polygonum sawatchense subsp. oblivium Dean Wm. Taylor 2012-7-18 21277 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  UC773924  Polygonum sawatchense subsp. oblivium L. R. Short 1936-5-22 S- 352 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  UC1136922  Polygonum sawatchense subsp. sawatchense George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 Comment
  UC1609438  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd (Lassen A1) 0.5 mi w Spaulding Tract Rd. (Rd. 518, 33N89) (ca 3 mi w of Eagle Lake) 1810 Comment
  CAS-BOT-BC420157  Polygonum sawatchense subsp. sawatchense Clarence R. Quick 1961-6-21 61 -18 Lassen Adjacent to Road 21, Blacks Mountain Expermental [Experimental] Forest, northeast of Lassen Peak 1798 Comment
  UC465764  Polygonum shastense Franklin P. Nutting Lassen Silver Lake Comment
  CDA22787  Polygonum spergulariiforme L. 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. Comment
  JEPS120125  Polypogon monspeliensis Lowell Ahart, John Dittes 2012-7-9 18300 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS121244  Polypogon monspeliensis Lowell Ahart, John Dittes 2013-7-22 18874 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
  JEPS70696  Polypogon monspeliensis W. L. Jepson 1918-8-2 7771 Lassen Beckwith Pass 1463 Comment
  CHSC52131  Populus fremontii Detzer; Sacks 1977-7-1 3 Lassen Ca. 3 mi se Milford, .5 mi se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  JEPS96122  Porterella carnosula Vernon H. Oswald and Lowell Ahart 1996-6-24 7854 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), w side Papoose Meadows, ca 0.3 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC803937  Porterella carnosula G. L. Stebbins Jr. 1949-8-6 4002 Lassen edge Feather Lake (between Susanville and McArthur Mud Flats) 1676 Comment
  RSA772320  Potamogeton Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47202 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  UCD138215  Potamogeton amplifolius Verne Grant; Irving Schneider Date Unknown 8269 Lassen northern part of county. Northwest shore of Blue Lake. 1981 Comment
  UCD150403  Potamogeton crispus William Anderson 1963-7-9 s.n. Lassen Honey Lake Refuge. Comment
  UCD58790  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  CHSC59158  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1992-7-16 5118 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. In streamlets in the meadow. 1719 Comment
  CHSC65369  Potamogeton foliosus var. foliosus Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7219 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  JEPS95173  Potamogeton gramineus Vernon H. Oswald and Lowell Ahart 1996-6-24 7876 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), in Papoose Creek where it leaves the n end of the meadow, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UCD138278  Potamogeton illinoensis G. Schoolcraft 1996-9-11 2562 Lassen Willow Creek below petroglyphs and above dam. 1432 Comment
  UC60849  Potamogeton striatus J. B. Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Comment
  JEPS100240  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  CHSC4985  Potentilla gracilis var. fastigiata R. Clicquennoi 1967-6-24 12 Lassen NW corner of Eagle Lake on highway 139. 1524 Comment
  JEPS44512  Potentilla gracilis var. fastigiata Brown and Wieslander 1922-7-30 25 Lassen Martin Springs , Martin Springs (Eagle Lake) Comment
  CAS-BOT-BC540361  Potentilla gracilis var. fastigiata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49453 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC540368  Potentilla gracilis var. fastigiata David D. Keck 1930-7-23 956 b Lassen 3 miles east of Westwood 1524 Comment
  CAS-BOT-BC540369  Potentilla gracilis var. fastigiata B. C. Cain 1925-8-24 76 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  SEINET10540584  Potentilla klamathensis Katherine L. Morris 1973-5-25 Morris 253 Lassen 27.7 miles nw of the junction of hwy 36 and 44 on hwy 44, at robber's spring, In an open meadow on one side of the hwy with yellow pine, white fir and open On the other side Comment
  JEPS2812 Image available Potentilla millefolia C. S. Robinson 1927-1-1 7 Lassen near Westwood Jct.; Lassen National Forest, Narval Flat; Narval Flat, near Westwood Jct., Lassen Co. 1747 Comment
  CHSC75533  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1999-6-9 9760 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. Roadside. 1645 Comment
  JEPS126563  Poterium sanguisorba Lowell Ahart, John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CDA26124  Prunus andersonii S. E. Piper 1943-7-14 Lassen Southwest, south and east edges of Honey Lake Desert. 1 mile east of Herlong. 0 Comment
  HSC101096  Prunus andersonii C. Dow, D. Garrison 2008-5-3 Lassen OHV Trailhead and Trail to Indian Springs 1439 Comment
  CDA34466  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. 0 Comment
  CHSC23523  Prunus emarginata Wayne O. Baum 1971-7-7 71 -83 Lassen N. slope of Gallatin Peak. 2011 Comment
  SEINET3850947  Prunus virginiana Dwayne Estes 2004-1 06028 Lassen SE side of Horse Lake along E roadside 1554 Comment
  CHSC6259  Prunus virginiana var. demissa R. Gein 1946-6-11 Lassen Eagle Lake. On Pine Creek. 1580 Comment
  HSC25730  Prunus virginiana var. demissa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19164 Lassen 3 mi. N of Westwood 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
  UCD91501  Pseudoroegneria spicata Beecher Crampton 1954-7-5 2053 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD91507  Pseudoroegneria spicata Beecher Crampton 1964-6-27 7089 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  CHSC29919  Pseudostellaria jamesiana Robin Ondricek 1978-6-27 73 Lassen On Coleman Lake Rd., 1977 burn area. 1950 Comment
  JEPS48629  Pseudostellaria jamesiana Hilda W. Grinnell 1934-6-1 Lassen top of divide 8 mi sw Susanville 1950 Comment
  SEINET5345382  Pseudotsuga menziesii var. menziesii D. A. Charlet, T. Charlet 1996-7-20 2300 Lassen Sierra Nevada; Diamond Mts, Upper East canyon (Milford Grade) 1770 Comment
  UCD135122  Pseudotsuga menziesii var. menziesii John Thomas Howell; Gordon H. True 1973-6-28 49409 Lassen Sierra Nevada, Elysian Valley, west of Janesville. 1310 Comment
  CHSC75463  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1999-6-9 9752 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  JEPS120861  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18756 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1924584  Psilocarphus brevissimus var. brevissimus Debra Valov 2006-5-28 2006014 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  SJSU10070  Psilocarphus tenellus L. Hooker 1965-7-12 Lassen by Hwy 139 c. 8.3 mi NE of Susanville 1645 Comment
  NY702518  Psoralidium lanceolatum H. D. D. Ripley 1944-5-29 5952 Lassen North of Doyle 1341 Comment
  RSA32005  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles E of Westwood 1524 Comment
  UC1137729  Pterospora andromedea L. R. Short and D. Gish 1936-7-15 S- 488 Lassen Burgess Spr. Exp. Range Lassen National Forest 1813 Comment
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  SEINET3823221 Image available Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles east of Westwood in leaf mold. Transition Life Zone 1524 Comment
  CHSC23564  Purshia tridentata W. O. Baum 1971-6-28 42 Lassen Along fire trail on e slope of Gallatin Peak. 1920 Comment
  CHSC67066  Purshia tridentata Willis Ball 1969-6-24 26 Lassen On a slope near 5 pts. Growing approx. 2 1/2 mls. from E.L.B.S. 1767 Comment
  UC1137303  Purshia tridentata var. tridentata George A. Fischer and Irwin H. Johnson 1933-7-12 F 212 Lassen Lassen National Forest 1722 Comment
  CAS-BOT-BC462754  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  UC70346  Pyrola picta Milo S. Baker 1890-1 Lassen Milford Comment
  UC1332443  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  UC35837  Pyrrocoma carthamoides var. cusickii M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  CAS-BOT-BC362264  Pyrrocoma carthamoides var. cusickii G. S. 1984-7-11 1292 Lassen About 4 miles west of Madeline. 37-12-14 1706 Comment
  POM39972  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UCD135326  Pyrrocoma hirta Ratliff 1966-7-5 4 Lassen Harvey Valley Allot. - Plot 71. Comment
  UC1561924  Pyrrocoma hirta var. hirta Barbara Ertter 1987-7-25 7312 a Lassen Pine Creek Valley at junction of Bridge Creek Springs Road ca 22 airmiles nw Susanville; Pine Creek Valley 1737 Comment
  CHSC76089  Pyrrocoma lanceolata var. lanceolata Lowell Ahart; Vernon H. Oswald 1999-9-13 8231 Lassen In the field on the north 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
  CHSC115058  Pyrrocoma lucida Allison Sanger 2012-7-25 Lassen Lassen National Forest, Eagle Lake Ranger District. Near Road 28N38 just south of junction with Road 28N03, about 1.2 miles east of Mountain Meadows Reservoir. Sec. 31, SE1/4 of NE1/4 and Sec. 32 SW1/4 of NW1/4. 1554 Comment
  JEPS100334  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17839 Lassen meadow along jeep road southward from Doyle Grade and 1 air mile South therefrom, just E of Plumas County line, Plumas National Forest 2042 Comment
  CAS-BOT-BC105246  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen SW of Susanville on Gold Run Road 1341 Comment
  UCD46622  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles west of Susanville. 1371 Comment
  UCSB12079  Quercus kelloggii Muller, Cornelius 1956-6-17 Lassen 6 1/2 mi. NW of Milford, 34 mi. SE of Buntingville along W shore of Honey Lake 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
  UC773871  Ranunculus alismifolius var. alismifolius L. R. Short 1936-4-28 S- 339 Lassen Harvey Valley Lassen <National> Forest 1706 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
  CHSC61174  Ranunculus alismifolius var. lemmonii Vernon H. Oswald; Lowell Ahart 1993-5-12 5380 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood). On the N side of the road and on the E side of the canal. 1729 Comment
  SD8208  Ranunculus aquatilis Mrs. R. M. Austin 1882-8-7 Lassen Hot Spring Valley Comment
  UC1537331  Ranunculus cymbalaria var. saximontanus Gordon H. True Jr. 1936-6-26 544 Lassen Honey Lake Valley-Willow Creek Valley Road 1524 Comment
  OBI75893  Ranunculus flammula Anthony Baniaga 2011-8-17 504 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1978 Comment
  CHSC58511  Ranunculus flammula var. ovalis Vernon H. Oswald 1992-7-3 5053 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. Along a drainage on the upper strand of the lake. 1851 Comment
  CHSC55400  Ranunculus glaberrimus Charlie Crannell 1991-4-21 16 Lassen South end of Lassen County youth camp property bordering Eagle Lake Field Station; 200 ft from Eagle Lake. 1560 Comment
  CHSC7733  Ranunculus glaberrimus Beverley J. Wise 1969-4-10 87 Lassen 3 mi. south of Susanville on Las. Co. Rd. 204 (Gold Run Road). 1310 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
  SEINET10535979  Ranunculus occidentalis Mary Merello 1993-6-28 Merello 749 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
  UC1143005  Ranunculus occidentalis August L. Hormay 1934-5-15 Lassen turnoff to Willow Spring Lassen National Forest (n of Hall's Flat) 1706 Comment
  SEINET208822  Ranunculus occidentalis var. eisenii J. Major 1966-6-24 s.n. Lassen Modoc National Forest ; Above Blue Lake Warner Mtns ca 18 air mi SE of Likely 1905 Comment
  CHSC71097  Ranunculus testiculatus Vernon H. Oswald; Lowell Ahart 1998-5-22 9101 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  CDA3487  Ranunculus testiculatus Lee Wheeler 1963-3-29 Lassen County fairgrounds, Susanville. 0 Comment
  JEPS82976  Ratibida columnifera G. D. Barbe 1974-8-20 1939 Lassen in dry gravelly cleared area at n end Glenn-Eagle airstrip (sw corner of lake, 0.8 mi n of Eagle Lake Resort); Eagle Lake 1554 Comment
  PASA2371  Rhus ovata M. Stason 1931-3-21 Lassen Near Roscoe Comment
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Dec 17 2014
  SEINET5845254  Ribes C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  CAS-BOT-BC92389  Ribes aureum var. aureum Doris K. Kildale 1930-5-12 9358 Lassen Between Susanville and Leavitt Lake. Comment
  CDA25528  Ribes cereum J. R. Keck Jr. 1977-7-13 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  HSC95270  Ribes inerme var. inerme Gordon Leppig 1998-7-12 947 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC212656  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile E of Fredonyer Pass Comment
  SEINET5339729  Ribes nevadense C. G. Gulling 1905-1 1537 Lassen Big Meadows 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
  JEPS87425  Ribes velutinum Vernon H. Oswald and Lowell Ahart 1993-6-14 5547 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake 1566 Comment
  CAS-BOT-BC363009  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen Lower NE slope of Shaffer Mtn. Comment
  CAS-BOT-BC363012  Rigiopappus leptocladus Doris Kildale Gillespie 1930-5-12 9341 Lassen 2 miles north of Susanville on road to Alturas Comment
  CHSC117224  Rigiopappus leptocladus Lowell Ahart; John Dittes 2016-6-7 20976 Lassen 20 yards west of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1951063  Rigiopappus leptocladus Debra Valov 2007-5-22 2007077 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CAS-BOT-BC363008  Rigiopappus leptocladus unspecified 1940-5-31 s.n. Lassen E. of McArthur Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  JEPS28472  Rorippa curvisiliqua George W. Gillett 1957-7-21 862 Lassen Juniper Lake- Cameron Meadow trail (300 yards n of trail summit, Lassen Volcanic National Park); Lassen Volcanic National Park 2118 Comment
  CHSC112392  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18725 Lassen Drainage filled with dirt form construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1126740  Rorippa nasturtium-aquaticum Robert W. Gardner 1937-6-16 G- 15 Lassen Burgess Spring Experimental Range Halls Flat Quad., Burgess Spring Experimental Range Comment
  POM312442  Rorippa sinuata Verne Grant, Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1567407  Rorippa sinuata G. Schoolcraft 1989-6-6 1901 Lassen n end Secret Valley w Highway 395; n end Secret Valley 1350 Comment
  CHSC61590  Rosa woodsii subsp. ultramontana Arthur C. Barrett 1915-8-18 33 Lassen Plumas Forest. Laufman Ranger Station. 1463 Comment
  CHSC99109  Rosa woodsii subsp. ultramontana Lowell Ahart; John Dittes 2008-6-20 14972 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS45639  Rosa woodsii var. ultramontana W. L. Jepson 1918-8-3 7801 Lassen Honey Lake Valley 1219 Comment
  SD61071  Rosa woodsii var. ultramontana Darley F. Howe none given Lassen Hillside of Parsnip Creek, Modoc National Forest 1829 Comment
  SDSU9232  Rosa woodsii var. ultramontana D. F. Howe 1964-8-1 3916 Lassen Prsnip Creek, Warner Mtns. Modoc National Forest. 1829 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
  CHSC68870  Rubus parviflorus Vernon Oswald; Lowell Ahart 1997-6-24 8614 Lassen South of Susanville on the north side of Diamond Mtn. along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SEINET4199964  Rumex crispus M. J. Williams 1974-7-29 74 -L-64 Lassen 2 mi. West of Hallelujah Junction, south of Hwy. 70 Comment
  CAS-BOT-BC433245  Rumex crispus Louella Bass 1973-6-15 EV- 108 Lassen Elysian Valley 1325 Comment
  SD64325  Rumex lacustris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on hwy #395 1676 Comment
  UC452567  Rumex paucifolius Franklin P. Nutting Lassen Big Valley Comment
  CHSC112393  Rumex salicifolius Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18774 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
  CAS-BOT-BC433860  Rumex salicifolius B. Bartholomew; B. Anderson 1988-7-22 4497 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  UC1745691  Rumex salicifolius var. lacustris Annetta M. Carter 1945-9-30 1718 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  RSA249402  Rumex venosus Thomas W. Nelson, S. Dowty 1971-7-22 19300 Lassen Along Hwy 395, about 4 miles east of Standish Comment
  SEINET4176577  Rumex venosus M. J. Williams 1969-5-24 s.n. Lassen Near Doyle 1524 Comment
  CHSC12427  Sagittaria cuneata Robert W. Severin 1969-6-25 17 Lassen East side of Murrer's Upper Meadow, in irrigation ditch, 2 miles ese from E.L.B.S. 1584 Comment
  CHSC5006  Sagittaria cuneata L. G. Bennett 1968-7-8 124 Lassen Murrers Meadow, north end, near Eagle Lake. 1493 Comment
  JEPS88426  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1996-8-1 8107 Lassen receding shore of the Mountain Meadows Reservoir ne Indian Ole Dam (sw of Westwood); Mountain Meadows Reservoir, ne of Indian Ole Dam 1539 Comment
  CAS-BOT-BC332741  Sagittaria cuneata R. F. Thorne; Larry E. DeBuhr 1975-8-22 46992 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  JEPS124721 Image available Sagittaria cuneata Joe Ammirati 1964-7-1 76 Lassen Ca. 1 mi. W. of Beber on H. W. 299- near bridge. Comment
  CAS-BOT-BC132713  Salix A. T. Whittemore 1979-4-21 79 -040 Lassen South shore of Eagle Lake Comment
  CAS-BOT-BC108057  Salix exigua John Thomas Howell; Gordon H. True 1973-8-1 50150 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  JEPS114626  Salix exigua Lowell Ahart, John Dittes 2008-6-22 15043 Lassen On the bottom of a deep ditch, on the south side of the road levee, open meadow area, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 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
  CAS-BOT-BC107958  Salix geyeriana John Thomas Howell 1976-7-20 s.n. Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass - Sierra Nevada 1432 Comment
  JEPS107798  Salix jepsonii Lowell Ahart, John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  JEPS107968  Salix jepsonii Lowell Ahart, John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  HSC26528  Salix lasiandra J. P. Smith, J. O. Sawyer 1972-5-6 5239 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  CAS-BOT-BC128221  Salix lasiandra subsp. caudata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  CAS-BOT-BC128172  Salix lasiandra var. lasiandra John Thomas Howell 1976-7-20 52018 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass - Sierra Nevada 1432 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
  CAS-BOT-BC129525  Salix melanopsis G. Schoolcraft 1999-7-6 2853 Lassen Along Susan River near Devil's Corral Trailhead 1402 Comment
  UC1191402  Salsola tragus Verne Grant and Irving Schneider 1947-7-19 8080 Lassen s. of Alutras (in Pit Valley, Williams Ranch, along Southern Pacific right-of-way); Pit Valley, Williams Ranch Comment
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Jun 24 2009
  CHSC68752  Salvia aethiopis Vernon H. Oswald; Lowell Ahart 1997-5-27 8482 Lassen West side of Hwy. 139 at Lassen Community College just north of Susanville. 1310 Comment
  JEPS94499  Salvia aethiopis Vernon H. Oswald and Lowell Ahart 1997-5-27 8482 Lassen just n of Susanville (w side of Highway 139 at Lassen Community College); Lassen Community College, Highway 139 1310 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
  UC1523804  Sambucus mexicana Gary Schoolcraft 1982-8-4 850 Lassen on road to Hayden Hill about 1/2 mi s Hwy 139 (37-10-29) 1524 Comment
  RSA537728  Sambucus microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UC1585882  Sambucus racemosa var. microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 air mi s of Susanville); Diamond Mts. 2255 Comment
  SEINET3239873  Santalaceae R. L. Mathiasen 2010-1 1018 Lassen 16 km W of north entrance to Lassen Nat. Park on Rte. 44 1380 Comment
  CHSC31116  Sarcobatus vermiculatus J. S. White 1980-4-14 114 Lassen Basin area. 0.1 mi n of US Hwy 395 3.5 mi e of Litchfield. 1341 Comment
  NY540267  Sarcobatus vermiculatus J. T. Howell 1975-7-23 51414 Lassen Alkaline flat on Highway 395 about 5 miles southeast of Doyle 1310.6 Comment
  UC1537040  Sarcobatus vermiculatus Gordon H. True Jr. 1936-6-21 519 Lassen Honey Lake Valley 1219 Comment
  UCD101770  Sarcobatus vermiculatus Beecher Crampton 1960-6-19 5730 Lassen southeast of Karlo; along U.S. Hwy 395. Comment
  JEPS59098  Sarcodes sanguinea Mary G. Clark 1918-5-24 Lassen Westwood, Lassen Co. Comment
  UC1608991  Saxifraga nidifica var. nidifica Vernon H. Oswald and Lowell Ahart 1993-5-12 5388 Lassen 1.6 mi se of Pittsville Road (Hwy 44 between Poiston Lake and A21 (to Westwood)) 1719 Comment
  RSA59813  Saxifraga oregana E. K. Balls 1950-5-19 14771 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  POM123064  Schoenoplectus maritimus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1100770  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1947-7-9 13298 Lassen irrigation ditch 5 mi e Bieber; e of Bieber Comment
  UC2156  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3294 Lassen Byers' meadows , Byers' meadows (Honey Lake Valley) Comment
  CHSC66415  Scirpus microcarpus Vernon H. Oswald; Lowell Ahart 1996-6-17 7819 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. In a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  RSA91471  Scirpus microcarpus F. W. Peirson 1926-6-22 6825 Lassen Small meadow above Hot Spring, Drakesbad, Lassen National Park Comment
  UC1100881  Scirpus nevadensis Verne Grant and Irving Schneider 1947-9-5 8376 Lassen nw shore Eagle Lake (by Sam Webb's place; Spaulding); nw shore Eagle Lake by Sam Webb's place Comment
  SEINET5324784  Scutellaria holmgreniorum A. Tiehm, Raymond Evans; James Young 1984-6-7 8591 Lassen Flats on the northwest side of Shaffer Mountain, 7.5 air miles north-northwest of Litchfield. 1372 Comment
  HSC82251  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6010 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM80110  Scutellaria nana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1137689  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest, Lassen Forest and Range Experiment Station Lassen National Forest; , Lassen Forest and Range Experiment S 1722 Comment
  CAS-BOT-BC240087  Secale cereale David D. Keck; J. Clausen 1935-6-24 3750 Lassen 2 mi. S. of Ravendale 1464 Comment
  CDA2409  Secale cereale T. C. Fuller 1969-5-22 18481 Lassen Northeast corner of Rair Drive & Main Street, Susanville. 0 Comment
  UC1137766  Senecio aronicoides August L. Hormay 1934-5-15 Lassen 1.50 mi e Halls Flat; Lassen National Forest 1767 Comment
  CDA34518  Senecio aronicoides B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  CDA8612  Senecio eurycephalus T. C. Fuller 1963-7-15 10895 Lassen 1.1 mile west of Little Valley. 0 Comment
  OBI76980  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen Natl Forest. Southern McCoy Flat. Spalding Tract quad T33N R10E sec 32 SE of SW 1700 Comment
  CAS-BOT-BC363686  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen About 4 miles east of Westwood 1432 Comment
  UC1142925  Senecio hydrophilus A. L. Hormay 1941-6-23 12 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 Comment
  UCD135547  Senecio integerrimus Grady L. Webster 1989-5-13 7723 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  JEPS85743  Senecio integerrimus var. exaltatus Roy E. Buck and Robert A. Price 1988-6-26 1031 Lassen ca 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  UC1924243  Senecio integerrimus var. exaltatus Debra Valov 2004-6-8 2004241 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD55305  Senecio integerrimus var. exaltatus Ellen Dean; Gary Schoolcraft 2006-5-16 3134 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  RSA0125038  Senecio integerrimus var. exaltatus A. A. Heller 1938-6-4 15143 Lassen In the yellow pine forest west of Fredonyer pass on State Highway #36. 1737 Comment
  CHSC13513  Senecio triangularis J. Pitts 1972-7-22 337 Lassen Found ca. .5 mi past Lassen Park gate. Comment
  UC1562580  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  RSA518886  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UC1121981  Sidalcea asprella subsp. nana A. Simontacchi 1940-6-3 793 Lassen 8.2 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 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
  CAS-BOT-BC205780  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  UCD18967  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). 1950 Comment
  CAS-BOT-BC205778  Sidalcea oregana H. D. Ripley; R. C. Barneby 1943-6-18 5766 Lassen Smoke Creek, N.E. of Viewland 1341 Comment
  JEPS15485  Sidalcea oregana subsp. oregana Joseph and Hilda Grinnell 1938-6-13 1099 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  POM260184  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 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
  RSA719898  Sidalcea oregana subsp. oregana Michael A. Vincent, K. Levings 2006-7-29 12906 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  UC1137745  Sidalcea oregana subsp. spicata George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  NY177476  Sidalcea oregana var. spicata J. T. Howell 1934-7-6 12442 Lassen Harvey Valley Comment
  CAS-BOT-BC384312  Silene bernardina Clarence R. Quick 1966-7-22 66 -52 Lassen Susanville-Pittville road, Blacks Mtn. Hdqts.; Halls Flat, 9 m. e. of Hat Creek 1706 Comment
  RSA438833  Silene bernardina Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  CAS-BOT-BC384309  Silene bernardina George W. Gillett 1957-7-28 928 Lassen Lassen Volcanic National Park. On trail to Widow Lake above junction with Snag Lake Trail at upper end of Butte Lake 1859 Comment
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  CAS-BOT-BC389493  Silene menziesii H. D. Ripley; R. C. Barneby 1943-6-14 5751 Lassen Mesa W. of Susanville 1310 Comment
  SEINET8879824  Silene menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc NF, along Blue Lake Road N of Blue Lake, above Parsnip Creek, ca 15 miles ESE of Likely. 1860 Comment
  SDSU4478  Silene menziesii D. F. Howe 1964-8-1 3908 Lassen Parsnip Creek, Warner Mts., Modoc National Forest. 1829 Comment
  CHSC83192  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). Meadow. 1700 Comment
  UCD99020  Silene nuda E. Sawyer 1935-6-27 223 Lassen Long Valley. 1310 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
  SJSU10112  Silene nuda J. W. Tilden 1960-6-27 1502 Lassen foot of Moonlight Rd near Westwood 1524 Comment
  JEPS107467  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-1 11850 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UCD138789  Sisyrinchium bellum Gerald Dickinson 1963-7-2 71 Lassen east of Willow Creek campground, south of Hayden Hill, State Highway 139. 1219 Comment
  CDA38567  Sium suave T. C. Fuller 1959-7-7 4732 Lassen Highway 395, 7.5 miles east of Susanville. 0 Comment
  UCD128140  Sium suave J. M. Tucker 1950-7-25 1973 Lassen 0.5 mile southwest of Bieber. Comment
  HSC21315  Solanum triflorum D. E. Anderson 1962-8-6 2331 Lassen Lake at foot of Tule Mtn. Comment
  CHSC65299  Solidago velutina subsp. californica Vernon H. Oswald 1995-8-21 7207 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the W side of the lake. 1859 Comment
  UC1137572  Solidago velutina subsp. californica A. Simontacchi 1940-7-5 927 Lassen 6.3 mi ene Ebey Lake; Halls Flat Quad. Comment
  UCD136093  Solidago velutina subsp. californica G. Schoolcraft 1994-8-29 2426 Lassen about 1 mile west of Susanville up Piute Creek. 1341 Comment
  CHSC113057  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2013-7-22 18846 Lassen West margin of a duck field, about 50 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC59194  Sparganium angustifolium Vernon H. Oswald; Lowell Ahart 1992-9-15 5214 Lassen Lassen Volcanic National Park. Island Lake located N of Bonte Pk. and ca. 1.5 mi W of Juniper Lake campgrounds. On the margin of the lake. 2164 Comment
  HSC95260  Sparganium emersum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 530 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS96089  Sparganium emersum subsp. emersum Vernon H. Oswald and Lowell Ahart 1996-6-24 7871 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow 1633 Comment
  UC1099936  Sparganium emersum var. emersum Verne Grant and Irving Schneider 1947-8-24 8271 Lassen nw shore Blue Lake (n Lassen County) Comment
  CHSC66424  Sparganium natans Vernon H. Oswald 1996-6-15 7766 Lassen Modoc Plateau. Papoose Meadows located ca. 2 mi S of Gallatin Beach at Eagle Lake, NW of Susanville. In Papoose Creek where it leaves the meadow. 1633 Comment
  CDA8825  Sphaeromeria potentilloides var. potentilloides Gary Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 0 Comment
  RSA0008983  Sphaeromeria potentilloides var. potentilloides Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC149626  Spiraea douglasii Lassen 1927 G. S. Crew 1927-7-24 87 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  SEINET10737171  Spiraea douglasii Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 840 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CHSC5276  Stachys ajugoides var. rigida L. Harman 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  SEINET10700599  Stachys ajugoides var. rigida Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 142 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 Comment
  JEPS128405  Stachys rigida Catherine Bauer with Ellen Bauer Benson 2017-8-16 12 Lassen South of Highway 44, North of Butte Lake, between Butte Creek and access road into Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC311783  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen Near Karlo, about 12 miles north of Litchfield 1356 Comment
  HSC25048  Stanleya viridiflora John Pratt 1970-7-2 46 Lassen 1220 Comment
  UC1951078  Stellaria borealis subsp. sitchana Debra Valov 2009-4-24 2009013 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SJSU8510  Stellaria longipes subsp. longipes J. W. Tilden 1960-6-27 1516 Lassen by Moonlight Rd c. 5 mi E of Westwood 1524 Comment
  JEPS94472  Stenotus acaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8507 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat, betw road and creek paralleling rd to north); Forest Route 38N04 1560 Comment
  RSA713119  Stenotus acaulis L. P. Janeway, B. Castro 2005-7-10 8487 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge. 1993 Comment
  UC86569  Stenotus acaulis T. S. Brandegee 1892-7-2 Lassen Near Susanville Comment
  CAS-BOT-BC375066  Stephanomeria Gordon H. True 1973-8-22 7657 Lassen North shore of Honey Lake ca. 5 miles east of Janesville & just west of Hartson Reservoir 1219 Comment
  JEPS28674  Stephanomeria tenuifolia George W. Gillett 1957-7-26 901 Lassen Butte Lake, point of rocks w of outlet an above trail Lassen Volcanic National Park 1844 Comment
  UC2062575  Stephanomeria virgata subsp. pleurocarpa Belinda Lo with Alex Randolph-Lowe 2017-10-9 390 Lassen LASSEN COUNTY: Bureau of Land Management, north of Red Rock Road. Comment
  HSC24234  Stipa comata John Pratt 1970-6-27 49 Lassen .5 mi. E of Turtle Head Comment
  UCR244065  Stipa comata Jim Andre, G. L. Clifton 1993-6-9 19691 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UC589864  Stipa exigua L. W. Whitney 1935-6-16 3272 Lassen base of Crater Mt. Crater Mt. Comment
  HSC80000  Stipa hymenoides William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  JEPS122358  Stipa lemmonii var. lemmonii Joseph Broberg, Jaycee Leonard 2012-6-28 CA 320 -104 Lassen From Alturas, head west on 299. 2 miles after Nubieber turn left at American flag and signs for Sierra Pacific Industries. Muck Valley Allotment. Collection site is at end of spur road Comment
  OBI22293  Stipa webberi Robert F. Hoover 1940-9-29 4647 Lassen Pass between Shaffer Mt and Warren Peak Comment
  SEINET10940334  Streptanthus cordatus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2606 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon juniper pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  UCD149959  Stuckenia striata William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  UC768817  Suaeda moquinii R. F. Hoover 1940-10-5 4669 Lassen Wendel Comment
  UC1537510  Swertia albicaulis Gordon H. True Jr. 1936-6-25 539 Lassen e of Harvey Ranger Station; Harvey Valley 1767 Comment
  CHSC5251  Swertia albicaulis var. albicaulis 1944-6-23 Lassen Eagle Lake. 1615 Comment
  CHSC68748  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8488 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  UC1609461  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (at Aspen Well, n of Hwy 44, on the nw edge of Harvey Valley) 1725 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
  CAS-BOT-BC245874  Symphoricarpos rotundifolius T. S. Brandegee 1892-6-26 s.n. Lassen Milford 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
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 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
  CAS-BOT-BC97526  Symphyotrichum ascendens Margaret Williams; Louella Bass 1972-10-22 EV 4 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  UCD136510  Symphyotrichum ascendens Verne Grant; Irving Schneider 1947-9-6 8391 Lassen west of Fleming Ranch Headquarters, near Wendel. Comment
  UC1192209  Symphyotrichum campestre Verne Grant and Irving Schneider 1947-7-31 8210 Lassen ne quater of George Williams section 19 Madeline Plain Comment
  UCD107503  Symphyotrichum foliaceum Tim Kuhn 2006-7-18 49 Lassen Eagle Lake Ranger District. Comment
  CAS-BOT-BC98929  Symphyotrichum foliaceum var. parryi G. Schoolcraft 1994-7-6 2359 Lassen About 1 mile west of Boot Lake 204 Comment
  CHSC59130  Symphyotrichum frondosum Vernon H. Oswald 1992-7-3 5054 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1851 Comment
  UC1523754  Symphyotrichum frondosum Gary Schoolcraft 1981-7-20 521 Lassen Said Valley Reservoir 1630 Comment
  JEPS122175  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-8-20 19720 Lassen 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. Comment
  CHSC59074  Symphyotrichum spathulatum var. yosemitanum Vernon H. Oswald; Lowell Ahart 1992-8-25 5179 Lassen Lassen Volcanic National Park. Opening in forest on the W side of the trail ca. 0.1 mi NW of Cameron Meadow, between Juniper and Snag Lakes. 1950 Comment
  CAS-BOT-BC221915  Taeniatherum caput-medusae Arnold Tiehm; Raymond Evans; James Young 1984-6-7 8597 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1386 Comment