Search Results — 2000 specimen records retrieved (1618 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78035  Abies concolor Clare B. Hardham 1969-8-28 s.n. Lassen west of Janesville Comment
  CDA467  Abies concolor Mark Lubinski 1999-10-12 PDR# 070105 Lassen 1 mi. W of State Route 44 and 36 (intersection). Comment
  UC1196917  Abies magnifica var. magnifica A. W. and M. Kildale 1926-9-1 2725 Lassen 11 mi n Chester; Lassen National Park, Juniper Lakes 2054 Comment
  RSA394187  Acer macrophyllum Christopher Davidson 1975-6-6 2726 Lassen Road to Thompson Peak, branching east of road 204, 7.5 miles SW of Susanville, following Gold Run Creek 0.5 mile on this road to the peak 1494 Comment
  CAS-BOT-BC28649  Achillea millefolium Lassen 1927 G. S. Crew 1927-7-15 78 Lassen Lassen County 1725 Comment
  SEINET11842145  Achillea millefolium Unknown 1978-1 30 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. T29N, R10E, sec. 24 1500 Comment
  CHSC7697  Achnatherum hymenoides Beverley J. Wise 1969-5-16 134 Lassen 18 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd 215. 1493 Comment
  SEINET10958804  Achnatherum hymenoides Lawrence P. Janeway 1990-7-4 Janeway 3769 Lassen McKesick Peak quad T25N, R16E, NW1/4 of sec. 4. Dry gravelly bench near east-side of saddle ca. 0.8 mi NE of Meadowview Peak. Granitic substrate; with sagebrush/ephedra scrub. 1981 Comment
  UC1024816  Achnatherum lemmonii Leo Whitney 1935-6-19 3263 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1137653  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson F 198 Lassen Grass Valley Lassen National Forest 1696 Comment
  UC1137660  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson 1933-7-14 F 252 Lassen Lassen National Forest 1767 Comment
  UC507005  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson F- 198 Lassen Grass Valley Lassen Forest 1696 Comment
  UCD50709  Achnatherum lemmonii George A. Fischer; Irwin H. Johnson 1933-7-12 198 Lassen Grass Valley. 1696 Comment
  RSA129475  Achnatherum lemmonii var. lemmonii G. A. Fischer 1933-7-14 252 Lassen Lassen Forest 1768 Comment
  UCD50795  Achnatherum nelsonii John Thomas Howell 1976-7-20 52026 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass, Lassen County. 1432 Comment
  CAS-BOT-BC216802  Achnatherum occidentale John Thomas Howell 1934-7-6 12431 Lassen Hall's Flat Comment
  UCD18962  Achnatherum occidentale Jack N. Reppert 1965-7-12 14 Lassen Lassen National Forest, Harvey Valley Allotment (HV 81-76). 1737 Comment
  UCD54017  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-8-1 50069 Lassen Canadian Zone forest, east slope of Diamond Range south of Susanville, Lassen County. 2362 Comment
  CHSC106321  Achnatherum occidentale subsp. californicum Lowell Ahart; John Dittes 2010-7-31 17027 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
  UC1024835  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-10 3221 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC773979  Achnatherum occidentale subsp. californicum L. R. Short and Wm. Gansberg 1936-6-2 S- 366 Lassen Burgess Spring Experiment Range Lassen Forest 1858 Comment
  RSA582082  Achnatherum occidentale subsp. occidentale J. T. Howell 1934-7-6 12431 Lassen Hall's Flat. Comment
  UC1024810  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-11 3271 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1137654  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 218 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest 1722 Comment
  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
  SEINET229581 Image available Achnatherum thurberianum Gary Schoolcraft 1982-6-22 722 Lassen North end of Fort Sage Mountains Comment
  UC584327  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2355 Lassen along highway from McArthur to Bieber; Big Valley Mt. 1100 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CAS-BOT-BC217993  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  JEPS127283  Acmispon americanus var. americanus Lowell Ahart, John Dittes 2016-7-13 21119 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC117223  Acmispon denticulatus Lowell Ahart; John Dittes 2016-6-7 20996 Lassen West of the pond, 110 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bierber, 7.3 Miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCD98583  Aconogonon davisiae Hans Leschke 1945-9-14 s.n. Lassen Mt. Lassen trail. 2621 Comment
  CAS-BOT-BC418769  Aconogonon phytolaccifolium Alice Eastwood 1912-8-22 1878 Lassen Morgans Springs [Morgans Hot Springs, el. 5000 ft.], Lassen Butte Region 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
  UC1483882  Agastache parvifolia G. Schoolcraft 1979-9-3 193 Lassen on F.S. Road #16, 5-6 mi w Hwy 44 1950 Comment
  POM147886  Agastache urticifolia J. B. Feudge 1927-7-20 1754 Lassen Westwood Comment
  CHSC23487  Ageratina occidentalis Wayne O. Baum 1971-7-22 71 -59 Lassen E slope of Gallatin Peak. 2072 Comment
  JEPS18703  Ageratina occidentalis Brown and Wieslander 1922-7-23 62 Lassen Martin Springs Eagle Lake, Martin Springs Comment
  CAS-BOT-BC30236  Ageratina occidentalis Hans Leschke 1959-8-8 1634 Lassen Between Bumpas Hell and Cold Boiling Lake 2407 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
  JEPS107469  Agoseris glauca var. glauca Lowell Ahart, John Dittes 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CDA9936  Agoseris glauca var. laciniata T. C. Fuller 1963-6-11 10664 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  JEPS103193  Agoseris grandiflora G. Schoolcraft 2000-6-19 2904 Lassen West of Cold Spring Valley 1706 Comment
  CHSC107994  Agoseris heterophylla Lowell Ahart; John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC66231  Agoseris heterophylla Vernon Oswald; Lowell Ahart 1996-6-24 7860 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
  JEPS118267  Agoseris heterophylla Lowell Ahart, John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  OBI77284  Agoseris heterophylla Anthony Baniaga 2011-6-17 354 Lassen Lassen NF. N side of Hog Flat Reservoir. Pegleg Mtn quad T30N R10E sec 19 NE of NE 1678 Comment
  CAS-BOT-BC13231  Agoseris monticola G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  UCR244067  Agropyron cristatum Jim Andre, G. L. Clifton 1993-6-9 19693 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CDA1684  Agropyron cristatum subsp. pectinatum G. D. Barbe 1974-8-2 1919 Lassen Hallelujah Junction, US 395 at Hwy 70, northwest corner. Comment
  CHSC50848  Agropyron desertorum Vernon Oswald; Lowell Ahart 1990-7-25 4396 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 Comment
  SEINET10509726  Agropyron desertorum Billy Joe Cox 1971-6-2 Cox 3227 Lassen 5 mi s of milford near honey lake on us hwy 395; along roadside in grass, Jeffery pine on mts range to w at approximately the same altitude. 1250 Comment
  HSC95196  Agrostis exarata Gordon Leppig, J. Cromwell 1997-7-27 628 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS121247  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards S of the man-made pond, about 120 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley. Comment
  POM313172  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  RSA0105582  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA129563  Agrostis exarata L. R. Short 1936-8-21 499 Lassen Burgess Spr. Exp. Range. 1799 Comment
  CAS-BOT-BC139676  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49483 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1024638  Agrostis pallens Leo Whitney 1934-7-10 2225 Lassen meadow near Harvey Spring (ca 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  CAS-BOT-BC138801  Agrostis scabra John Thomas Howell 1959-9-23 34882 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  RSA87452  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest Comment
  POM98581  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  CHSC115828  Agrostis stolonifera Lowell Ahart; John Dittes 2015-7-14 20335 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UCSC000092  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Bogard Ranger Station - Lassen National Forest Comment
  UC53478  Agrostis variabilis M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  SEINET12558767 Image available Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  UC978579  Alisma gramineum Verne Grant and Irving Schneider 1947-9-6 8382 Lassen creek midway between Eagle Lake and 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
  CHSC117273  Alisma triviale Lowell Ahart; John Dittes 2016-7-15 21221 Lassen About 50 yards west of the road and about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  HSC2887  Alisma triviale R. G. Means 1962-7-5 73 Lassen 1 mi. SW of Bieber. 1250 Comment
  JEPS124713 Image available Alisma triviale P. Matteson 1968-7-9 86 Lassen 1.6 mi. N. of intersection of HWY 139 and Horse Lake Road. Comment
  GMDRC7739  Allium acuminatum J. M. Andre, G. Clifton 1993-6-1 33419 Lassen Modoc Plateau: along US Hwy 395 approx 11 mi. SE of Ravendale, just north of Tule Patch Spring, east of Snowstorm Mtn 1588 Comment
  UC1483842  Allium acuminatum G. Schoolcraft 1980-6-5 250 Lassen ne side of Snowstorm Mountain Snowstorm Mountain 1584 Comment
  UC843269  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen e Fredonyer Pass (on Highway #36) 1645 Comment
  CAS-BOT-BC459569  Allium acuminatum G. Schoolcraft 1986-5-19 1574 Lassen North slope of Bald Mtn., Susanville 1280 Comment
  HSC84105  Allium acuminatum Dale McNeal 1983-6-6 2843 Lassen Beside Horse Lake Rd., 3 mi. NE of junction of Hyw. 139 Comment
  UC119964  Allium amplectens T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC30581  Allium campanulatum Sori H. Shad 1970-7-25 48 Lassen Found on the way to Papoose Valley, about 9 miles south of E. L. B. S. 1653 Comment
  HSC69593  Allium campanulatum Gary Schoolcraft 1980-7-28 340 Lassen S of Blue Lake 2043 Comment
  SEINET10472036  Allium campanulatum Mary Merello 1993-6-27 Merello 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  UC1133790  Allium campanulatum A. Simontacchi 1940-7-1 935 Lassen 2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  POM110069  Allium lemmonii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1136928  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  POM260464  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 Comment
  UC2042973  Allium lemmonii Barbara Ertter 1990-5-13 8966 Lassen McCoy Road N of Westwood, 0.3 mi S of Highway 44 on E side of McCoy Flat. Comment
  CAS-BOT-BC474045  Allium parvum Doris Kildale Gillespie 1930-5-13 9371 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC474047  Allium parvum Louella Bass 1973-4-15 20 Lassen Elysian Valley 1325 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
  JEPS47583  Allium platycaule Hilda W. Grinnell 1934-6-1 Lassen 8 mi sw Susanville 1950 Comment
  UC119983  Allium platycaule T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC474073  Allium platycaule H. D. Ripley; R. C. Barneby 1943-6-14 5733 Lassen Fredonyer Pass 1676 Comment
  UC106708  Allophyllum integrifolium T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CDA40010  Allophyllum integrifolium T. C. Fuller 1963-7-15 10889 Lassen Road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  SEINET10510844  Alopecurus aequalis Alan A. Beetle 1941-6-28 Beetle 2795 Lassen 10 miles west of Chester, rte 36, open meadow near small stream. Assoc. Scirpus congdoni, Deschampsia, Ranunculus. Comment
  CAS-BOT-BC138163  Alopecurus aequalis var. aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 miles west of Chester, Route 36. Comment
  CDA43006  Alopecurus geniculatus L. Ahart, John Dittes 2008-6-2 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
Read comments
Oct 5 2019
  RSA125344  Alopecurus geniculatus P. H. Raven, Otto T. Solbrig 1958-6-17 13299 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  UCD55918  Alopecurus saccatus P. B. Kennedy 1927-6-13 s.n. Lassen Pit River. Comment
  UC1951079  Alyssum desertorum Debra Valov 2009-4-24 2009012 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET5340073  Alyssum desertorum J. A. Young 1982-1 s.n. Lassen M. Meyer's Ranch, Adin. 1372 Comment
  CHSC54178  Alyssum minus subsp. micranthum Vernon H. Oswald 1991-5-28 4629 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. In meadow. 1267 Comment
  CHSC29942  Amaranthus blitoides Robin L. Ondricek 1978-8-2 111 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  JEPS78111  Amaranthus blitoides Gary W. Zamzow 1972-7-18 86 Lassen beside Highway 395, 3 mi n Hallelujah Junction 1371 Comment
  JEPS124370  Amaranthus californicus Lowell Ahart, John Dittes 2015-7-13 20317 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC174355  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca. 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles east of Sierra Valley 1584 Comment
  RSA252462  Ambrosia acanthicarpa R. F. Thorne, C. W. Tilforth 1969-9-6 39266 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC42889  Ambrosia acanthicarpa P. Monnet 1913-8-1 966 Lassen unspecified Comment
  RSA38467  Amelanchier pallida Philip A. Munz 1947-5-19 11859 Lassen Fredonyer Forest Camp Ground on Hwy 36 W of Susanville. 1509 Comment
  CAS-BOT-BC142539  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  UC773882  Amelanchier utahensis L. R. Short 1936-5-22 S- 349 Lassen Burgess Spring Experiment Range; Forest Lassen 1859 Comment
  CHSC60784  Amphiscirpus nevadensis Vernon H. Oswald; Lowell Ahart 1993-6-14 5521 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). Shallow depressions among low dunes on the upper beach between the road and the lake. 1566 Comment
  CDA18259  Amsinckia intermedia G. D. Barbe 1974-8-2 1921 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS107316  Amsinckia menziesii var. 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
  UC1061762  Amsinckia tessellata var. tessellata E. Sawyer 1935-6-27 236 Lassen Long Valley 1310 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
  CHSC5040  Anaphalis L. B. Barlow 1967-7-4 95 Lassen 5 mi. south of Eagle Lake Biological Station on Gallatin Beach Road. 1737 Comment
  JEPS94117  Anisocoma acaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9134 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  CAS-BOT-BC63953  Antennaria argentea Clare B. Hardham 1969-8-28 17453 C. Lassen West of Janesville Comment
  CAS-BOT-BC26644  Antennaria argentea subsp. aberrans Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC59217  Antennaria dimorpha Doris Kildale Gillespie 1930-5-13 9392 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC59220  Antennaria dimorpha James Jokerst 1983-5-31 1792 Lassen Grasshopper Valley Quad. Near Madeline Plains 1583 Comment
  HSC28309  Antennaria dimorpha D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19266 Lassen Harvey Valley near Cone Springs Comment
  JEPS118283  Antennaria dimorpha Lowell Ahart, John Dittes 2011-6-20 17508 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC180151  Antennaria dimorpha unknown 1892-6-24 Lassen Honey Lake Comment
  RSA416684  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Shaffer Muntain about 1/2 mile west of Hwy 395 1463 Comment
  CHSC60809  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 .1 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  UC1137665  Antennaria geyeri George A. Fischer and Irwin H. Johnson 1933-7-14 F 267 Lassen Lassen National Forest 1722 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
  JEPS19756  Antennaria luzuloides Rimo Bacigalupi with S. Galen Smith 1957-6-28 5996 Lassen 3.6 mi n of Madeline 1645 Comment
  SBBG63409  Antennaria luzuloides S. W. Hutchinson, M. N. Ackley -Jun-1925 212 Lassen Eagle Lake region 1554 Comment
  UC585069  Antennaria luzuloides E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1791 Lassen about 2 mi n Madeline 1363 Comment
  UCD169450  Antennaria luzuloides Lowell Ahart; John Dittes 2005-6-1 11862 Lassen Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. About 1/2 mile west of Scott Road, on the east side of the poor dirt road. 1448 Comment
  UCD128940  Antennaria rosea Beecher Crampton 1960-6-18 5712 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CHSC68842  Antennaria rosea subsp. confinis Vernon H. Oswald; Lowell Ahart 1997-6-24 8647 Lassen South of Susanville at the small pond on the crest of Diamond Mtn., about mid-way between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS95747  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  RSA125375  Anthoxanthum aristatum P. H. Raven, Otto T. Solbrig 1958-6-16 13228 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  CHSC112470  Apera interrupta Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18733 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117198  Aphyllon fasciculatum Lowell Ahart; John Dittes 2016-6-7 20997 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC34335  Aphyllon purpureum Beverley J. Wise 1969-4-29 71 Lassen 3.5 mi. north of Susanville on Round Valley rd. off Hwy 139. 1341 Comment
  JEPS49803  Apocynum androsaemifolium Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  CHSC75442  Apocynum cannabinum Vernon H. Oswald; Lowell Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. 1356 Comment
  CHSC1430  Aquilegia formosa K. Chew 1954-7-9 Lassen Along Pine Creek just below Stephens meadow. 1828 Comment
  UC773880  Aquilegia formosa L. R. Short 1936-6-26 S- 407 Lassen Lassen National Forest, Burgess Spr. Exp. Range 1837 Comment
  SEINET5337698  Aquilegia formosa var. truncata C. G. Gulling 1905-1 1544 Lassen Big Meadows Comment
  RSA0129285  Arabis holboellii var. pinetorum R. C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake. Comment
  RSA0129905  Arabis lemmonii var. depauperata Clare B. Hardham 1961-6-16 7442 Lassen Diamond Peak, Lassen/Plumas counties. 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
  NY119631  Arabis suffrutescens G. Schoolcraft 1983-6-29 1038 Lassen Coulthurst Flat area, 34-10-27 SW 1889.8 Comment
  SEINET2471253  Arceuthobium abietinum R. L. Mathiasen 2008-9-26 2008 -68 Lassen 16.5 km S. of N. entrance to Lassen Nat. Park on State Rte. 89 1940 Comment
  CDA6788  Arctium minus T. C. Fuller 1959-7-7 4725 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  CAS-BOT-BC45904  Arctostaphylos nevadensis M. S. Jussel 1931-9-6 s.n Lassen Sulphur Works, Mt. Lassen 2133 Comment
  SEINET7263418  Arctostaphylos patula E. Murin 1967-5-20 s.n. Lassen Eagle Lake road at Galleton turnoff west of Susanville Comment
  CHSC72309  Arenaria aculeata L. P. Janeway; Glenn Clifton 1998-7-9 5738 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  UC1136825  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 2223 Lassen Lassen Forest 1728 Comment
  CAS-BOT-BC27516  Arenaria congesta var. simulans Amos Arthur Heller 1938-6-23 15198 Lassen 2 miles E of Fredonyer Pass 1645 Comment
  RSA0002312  Arenaria congesta var. simulans A. A. Heller 1938-6-23 15198 Lassen On an open slope east of Fredonyer Pass. 1646 Comment
  CHSC30585  Argemone munita subsp. argentea P. V. Caldwell 1972-6-24 253 Lassen Sandy beach area between the tunnel and E.L.B.S., off the roadside. Comment
  CAS-BOT-BC401787  Argemone munita subsp. rotundata John Thomas Howell 1973-7-10 49789 Lassen 3 miles west of Susanville 1371 Comment
  CAS-BOT-BC401790  Argemone munita subsp. rotundata P. Monnet 1913-7-1 945 Lassen Doyle Comment
  HSC16736  Argemone munita subsp. rotundata M. T. Milligan 1964-7-17 147 Lassen 2 mi. N on main road from Eagle Lake General Store 1677 Comment
  JEPS17745  Arnica chamissonis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5414 Lassen Mosquito Creek (along), in Corporation Meadow, s end of Warner Mts. Modoc National Forest, Warner Mts., Corporation Meadow, Mosq 2042 Comment
  JEPS35887  Arnica chamissonis Brown and Wieslander 1922-7-30 26 Lassen Martin Springs , Eagle Lake Comment
  UC1136826  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 184 Lassen (Dry Lake) Grass Valley Grass Valley, Thompson Meadow 1694 Comment
  CAS-BOT-BC82115  Arnica chamissonis Parkison 1916-7-21 36 Lassen Lassen Forest, Harvey Valley 1676 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
  CAS-BOT-BC332742  Arnica chamissonis subsp. foliosa R. F. Thorne; Larry E. DeBuhr 1975-8-22 46993 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  CAS-BOT-BC82313  Arnica cordifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 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
  UC1137700  Arnica cordifolia A. Simontacchi 1940-5-21 764 Lassen 4.6 mi sse of Blacks Mtn.; Hall Flat Quad. 1737 Comment
  UC2027326  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen National Forest. Willard Creek. Fredonyer Pass. Fredonyer Pass quadrangle Comment
  CHSC5221  Arnica dealbata 1944-7-26 Lassen Juniper Lake. 2055 Comment
  CHSC66714  Arnica discoidea Vernon H. Oswald; Lowell Ahart 1996-8-1 8128 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  UC1609098  Arnica fulgens Vernon H. Oswald and Lowell Ahart 1993-6-28 5580 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  RSA455868  Arnica longifolia Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1137701  Arnica mollis A. Simontacchi 1940-5-28 785 Lassen 3.2 mi wsw Patterson Mtn.; Halls Flat Quad. 1767 Comment
  CHSC77183  Arnica parryi subsp. sonnei G. Schoolcraft 1994-8-2 2400 Lassen About 2 miles west of Boot Lake. 2286 Comment
  OBI76979  Arnica sororia Anthony Baniaga 2011-6-23 389 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  RSA702450  Arnica sororia L. P. Janeway 2004-6-26 8166 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UCD129144  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UCD35733  Artemisia cana Beecher Crampton 1960-6-20 5734 Lassen Grass Valley .4 miles southeast of Black's Mtn. 1676 Comment
  HSC68838  Artemisia cana subsp. bolanderi Gary Schoolcraft 1979-9-27 195 Lassen Painter Flat 1720 Comment
  SEINET6775323 Image available Artemisia cana subsp. bolanderi G. Schoolcraft 1979-10-3 198 Lassen In Dry Valley, just west (0.25 miles) of Dry Valley Gap 1615 Comment
  UC1119577  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 948 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1507398  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 194 Lassen Painter Flat 1722 Comment
  UC217077  Artemisia cana subsp. bolanderi H. M. Hall 1921-9-10 11673 Lassen Madeline Plains Comment
  CAS-BOT-BC84828  Artemisia cana subsp. cana Ernest C. Twisselmann 1961-7-21 6572 Lassen Harvey Valley 1981 Comment
  UCD159580  Artemisia douglasiana D. S. Park 2011-8-24 317 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  UC91221  Artemisia ludoviciana subsp. incompta unknown 1892-6-29 Lassen Janesville Comment
  JEPS127351  Artemisia ludoviciana subsp. ludoviciana Lowell Ahart, John Dittes 2016-7-13 21105 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UCD129329  Artemisia ludoviciana subsp. ludoviciana K. M. Meyer; A. Townesmith 2007-7-19 134 Lassen Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC90778  Artemisia ludoviciana subsp. ludoviciana Louella Bass 1980-5-1 s.n. Lassen Standish, Honey Lake Valley Comment
  UCD55270  Artemisia spinescens Ellen Dean 2006-5-15 3080 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. Northern part of Johnston property near sandy wash. 1249 Comment
  CHSC5197  Artemisia tridentata P. Balch 1955-7-10 Lassen Fields adjoining Stafford's Ranch, Eagle Lake. 1584 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
  UC1136979  Artemisia tridentata subsp. tridentata L. R. Short 1936-9-30 S- 505 Lassen MDM, Burgess Spr. Exp. Range Lassen National Forest, MDM, Burgess Spr. Exp. Range 1752 Comment
  SEINET195654  Artemisia tridentata subsp. vaseyana G. Thomas Robbins 1945-10-7 2155 Lassen Lassen National Forest; Harvey Mountain, 2-3 miles northeast of burgess Spring, Harvey Valley 1676 Comment
  SEINET230066  Artemisia tridentata subsp. vaseyana Leila M. Shultz, John S. Shultz 1985-6-23 8604 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  UC1537161  Asclepias fascicularis Gordon H. True Jr. 1937-7-10 787 Lassen between Bull Flat and Skeedaddle 1493 Comment
  SEINET12319574  Asclepias fascicularis Unknown 1978-1 84 Lassen E shore of Eagle L., S of Little Troxel Pt., T32N, R11E, sec14 1573 Comment
  UC1537160  Asclepias speciosa Gordon H. True Jr. 1936-6-22 525 Lassen Honey Lake Valley 1219 Comment
  CAS-BOT-BC99241  Aster G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  POM261533  Aster eatonii Alice Eastwood 1912-8-22 1918 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  CHSC23442  Astragalus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5810 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  NY790903  Astragalus agrestis R. M. Austin 06 1898 2211 Lassen Madaline Plains Comment
  CAS-BOT-BC177435  Astragalus andersonii Margaret Williams 1974-8-4 74 -L-83 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC177437  Astragalus andersonii John Thomas Howell 1934-6-10 11846 Lassen 4 miles south of Omira Comment
  CAS-BOT-BC177440  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle 1402 Comment
  JEPS107690  Astragalus andersonii Lowell Ahart, John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  NY791377  Astragalus andersonii W. W. Eggleston 1911-7-8 7188 Lassen Vicinity of Doyle Station 1290 Comment
  CAS-BOT-BC27614  Astragalus anxius Robert J. Meinke; Kaye 1991-7-16 6108 Lassen Ash Valley, ca. 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  HSC69614  Astragalus anxius Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  SEINET5323826  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. East of Madeline Plains 1713 Comment
  UCD53891  Astragalus canadensis var. brevidens A. M. Shapiro 2005-6-10 s.n. Lassen 1 mi. SE Beckwourth Pass. 1524 Comment
  RSA0028049  Astragalus curvicarpus John F. Emmel 1996-7-14 1423 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  SEINET5325008  Astragalus curvicarpus F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  CHSC64875  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald 1995-6-26 6923 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC64876  Astragalus filipes Vernon H. Oswald; Lowell Ahart 1995-6-19 6883 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. In wash on n side of road. 1371 Comment
  NY658507  Astragalus filipes G. Schoolcraft 1981-6-15 460 -B Lassen Ash Valley 1554.5 Comment
  CAS-BOT-BC182955  Astragalus filipes T. C. Fuller 1965-8-26 14038 Lassen Haskell Parks range, Diaz Flat, ca. 5 mi. e. of Hayden Hill, n.w. Lassen Co. Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  SEINET10874132  Astragalus filipes Taylor 1982-7-8 Taylor 4790 A Lassen T23N R17E ne/nw sec 2. Constantia quad. At gate near RR Crossing just off Scott Rd, ca. 5 mi s of Constantia. Sagebrush Scrub. 4600 ft. 1402 Comment
  CAS-BOT-BC186853  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  SEINET3416806 Image available Astragalus gibbsii Lewis S. Rose 1940-6-16 40595 Lassen Susanville, Susanville. 1280 Comment
  RSA647557  Astragalus gibbsii Marion P. Harthill 1971-6-20 220 Lassen Ravendale Comment
  SEINET10970063  Astragalus gibbsii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 881 Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  CAS-BOT-BC186910  Astragalus inversus M. S. Baker 1898-8-1 529 Lassen Big Valley, near Johnson's Comment
  CAS-BOT-BC186913  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5749 Lassen W. of Susanville 1310 Comment
  SEINET5325323  Astragalus iodanthus var. diaphanoides M. J. Williams, Gary Schoolcraft; Arnold Tiehm 1986-5-12 86- 23 -2 Lassen Smoke Creek Rd, E of Hwy 395, 1 mi W of Nevada-Calif. Boundary. 1341 Comment
  UC1537105  Astragalus lentiginosus var. floribundus Gordon H. True Jr. 1938-7-8 903 Lassen n Hot Spring Mountain (Mud Flat); n of Hot Spring Mountains, Mud Flat 1371 Comment
  CHSC7667  Astragalus lentiginosus var. platyphyllidius Beverley J. Wise 1969-5-4 56 Lassen 1.7 mi. west on Shaeffer Mtn Lookout Rd off Hwy 395 (approx. 1 mi. south of Las Co. Rd. 338). 1676 Comment
  POM26311  Astragalus lentiginosus var. platyphyllidius Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  JEPS114762  Astragalus lentiginosus var. salinus Lowell Ahart, John Dittes 2008-6-19 14889 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CAS-BOT-BC187561  Astragalus malacus Mrs. C. C. Bruce 1898-6-1 2214 Lassen Madaline Plains & Modoc Comment
  CHSC71083  Astragalus malacus Vernon H. Oswald; Lowell Ahart 1998-5-22 9104 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  UC81230  Astragalus malacus unknown 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC192842  Astragalus pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UC570045  Astragalus pulsiferae E. Sawyer 1935-6-27 237 Lassen Long Valley Sierraville Quad., Long Valley 1310 Comment
  UC65741  Astragalus pulsiferae P. B. Kennedy 1901-6-10 Lassen R.R. Station Constantia (Constantia) Comment
  NY694127  Astragalus pulsiferae var. pulsiferae See comments 1981-6-23 614 Lassen West of Susanville 1463 Comment
  RSA104884  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass. 1494 Comment
  RSA111760  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 Comment
  CHSC13620  Astragalus purshii M. S. Taylor 1974-6-20 257 Lassen Ca. 400 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1554 Comment
  CHSC21173  Astragalus purshii M. S. Taylor 1975-5-4 224 Lassen Ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. Comment
  HSC36246  Astragalus purshii John Rehling 1975-5-15 78 Lassen Along Hwy. 395 just before the turnoff to Janesville Comment
  CAS-BOT-BC194087  Astragalus purshii var. purshii Louella Bass 1973-6-12 102 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CAS-BOT-BC194090  Astragalus purshii var. purshii H. D. Ripley; R. C. Barneby 1943-6-14 5741 Lassen West of Susanville 1310 Comment
  CAS-BOT-BC194093  Astragalus purshii var. purshii Doris Kildale Gillespie 1930-5-12 9335 Lassen 2 miles north of Susanville on road to Alturas Comment
  POM45163  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC1137765  Astragalus purshii var. tinctus August L. Hormay 1934-5-9 Lassen Lassen National Forest , Black's Mt Headquarters (Black's Mt. Headquarters) 1706 Comment
  HSC63892  Astragalus whitneyi Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak. 2378 Comment
  UC13372  Astragalus whitneyi M. S. Baker and F. Nutting 1894-7-3 Lassen s side Dixey Mts. Comment
  SEINET12165119  Astragalus whitneyi N. H. Holmgren, Holmgren, P. K. 1980-1 9514 Lassen Observation Peak, S side of Mt. 18km airline dist. E of Ravendale. T34N R16E S33 Comment
  SD109653  Astragalus whitneyi var. confusus James Vale, Keith Wagnon, Walter & Irja Knight 1981-5-24 4136 Lassen 3 mi S of Adin on Hwy #139 1372 Comment
  CAS-BOT-BC199137  Astragalus whitneyi var. siskiyouensis Clare B. Hardham 1971-8-22 18366 Lassen Diamond Mountain 2346 Comment
  CAS-BOT-BC199135  Astragalus whitneyi var. siskiyouensis H. D. Ripley; R. C. Barneby 1943-6-14 5747 Lassen Above Hidden Valley W of Susanville 1584 Comment
  JEPS118271  Athysanus pusillus Lowell Ahart, John Dittes 2011-6-20 17491 Lassen About 40 yards east of the stream, about 70 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS29746  Atriplex confertifolia Rimo Bacigalupi and L. R. Heckard 1962-5-28 8501 Lassen along road from U.S. 395 past Wendel and Flanagan to Pyramid Lake, Nevada, 2 mi e Wendel junction (n of Honey Lake); , e of Wendel junction 1219 Comment
  UC769938  Atriplex confertifolia R. F. Hoover 1940-10-5 4663 Lassen Wendel Comment
  UCD50220  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  CHSC71070  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1998-5-22 9089 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  JEPS109626  Balsamorhiza hookeri Dean W. Taylor 2002-6-21 18178 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  JEPS1758  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi w of, along Hwy. 36 Fredonyer Pass 1752 Comment
  UC1794994  Balsamorhiza hookeri R. K. Brummitt 1998-5-17 19897 Lassen 12 km W of Susanville, E foot of Fredonyer Pass 1400 Comment
  SEINET2047669 Image available Balsamorhiza hookeri var. hirsuta N. H. Holmgren, P. K. Holmgren 1978-6-12 8935 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance East-Southeast of Ravendale. T33N, R16E, S5. 1768 Comment
  SEINET10534911  Balsamorhiza incana Billy Joe Cox 1971-6-2 Cox 3102 Lassen 4 mi. S of Adin along CA Hwy. 139 in basalt-clay; valley floor in Artemisia. 1341 Comment
  CAS-BOT-BC106460  Balsamorhiza sagittata Helen K. Sharsmith 1955-6-22 4500 Lassen Five miles beyond Blue Lake on road to Likely; Warner Mountains - Modoc National Forest 1767 Comment
  UC1136968  Balsamorhiza sagittata L. R. Short and Wm. Gansberg 1936-6-16 S- 441 Lassen Burgess Spr. Exp. Range Lassen National Forest 1813 Comment
  CHSC5234  Barbarea orthoceras A. Santos 1946-6-12 Lassen Eagle Lake. Pine Creek. 1584 Comment
  CHSC99151  Barbarea orthoceras Lowell Ahart; John Dittes 2008-6-20 14949 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET11193258  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, intersection of Hwy 139 and Eagle Lake Road. 1494 Comment
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  POM172679  Beckmannia syzigachne Franklin P. Nutting 1894-7-6 s.n. Lassen Dixey Valley Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  CHSC65309  Bergia texana Vernon H. Oswald; Lowell Ahart 1995-8-14 7179 Lassen Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  UC1790750  Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road mi W of Hwy 395 on Hwy 70, then 5.5 road mi N on Scott Road 1493 Comment
  CHSC66844  Berula erecta Vernon H. Oswald 1996-9-21 8285 Lassen Modoc Plateau. Ca. 3 mi W of Hwy. 139 on the road to Eagle Lake Biological Station, ca. 10 mi (air) N of Susanville. 1508 Comment
  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-BC413000  Bistorta bistortoides A. M. Vollmer; L. Beane 1953-7-1 65 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC413084  Bistorta bistortoides George W. Gillett 1957-7-22 882 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake 1850 Comment
  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-BC127951  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CAS-BOT-BC127957  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC128046  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CHSC68732  Blepharipappus scaber Vernon H. Oswald; Lowell Ahart 1997-5-27 8484 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  JEPS114752  Blepharipappus scaber Lowell Ahart, John Dittes 2008-6-19 14876 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
  POM223583  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3733 Lassen 2 miles south of Ravendale. 1463 Comment
  SBBG22255  Blepharipappus scaber C. B. Hardham 1961-6-16 7451 Lassen Gold Run Crk, S of Susanville Comment
  SBBG30617  Blepharipappus scaber D. Myrick 1968-6-19 1958 Lassen Hwy 395, 23 mi S of Alturas 1524 Comment
  SEINET9331153  Blepharipappus scaber Unknown 1974-8-20 1932 Lassen Survey w/ state and county personnel, Hallelujah Jct, NW corner of jct of US hwy 495 and hwy 70. USGS Quad: 15' Plant Systematics Lab/Herbarium CDA, California Dept. of Food & Agric Comment
  UC604683  Blepharipappus scaber Farris Farris 1935-5-20 Lassen Susanville 1341 Comment
  UC894096  Blepharipappus scaber C. L. Hitchcock 1940-5-26 6612 Lassen ca 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  CAS-BOT-BC127955  Blepharipappus scaber Dr. Jean Linsdale 1929-6-9 s.n. Lassen Pete's Valley Comment
  SEINET3132721  Blepharipappus scaber J. L. Strother 1970-5-13 953 Lassen ca. 6 mi. N of Honey Lk. 1280 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
  CHSC7708  Boechera puberula Beverley J. Wise 1969-4-29 35 Lassen 3.5 mi. north of Susanville on Rnd Valley Rd. off Hwy 139. 1341 Comment
  UCD114424  Boechera puberula Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  JEPS84940  Boechera retrofracta Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen n.e. side Honey Lake (e. of road over saddle on w. side of Skeedaddle Mountains); Skeedaddle Mountains 1645 Comment
  JEPS95056  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1997-5-27 8495 Lassen North of Susanville on Forest Route 38N04 (between Highway 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Highway 139. 1546 Comment
  RSA0090999  Boechera retrofracta Dean Wm. Taylor 2009-5-21 20602 Lassen Susanville; Susanville Peak, easterly flank along logging road trending northward from Susanville Indian Rancheria. 1600 Comment
  UC1609108  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1993-6-14 5512 Lassen ca 4 mi (air) w Eagle Lake (Lassen A1 (Eagle Lake Rd), 1.0 mi n of its jct with Lassen A21 (32N02), on the w edge of Brockman Flat Lava Beds); Brockman Flat Lava Beds 1810 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
  CHSC66380  Boechera sparsiflora Vernon H. Oswald; Lowell Ahart 1996-6-17 7774 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  UC1561877  Boechera subpinnatifida Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen Skeedaddle Mountains on NE side of Honey Lake, E of road over saddle on W side of range. 1645 Comment
  POM253280  Boisduvalia macrantha A. A. Heller 1938-7-28 15295 Lassen About a mile east of Westwood 1524 Comment
  JEPS95898  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1999-9-13 8221 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
  RSA712894  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
  UC1134039  Brodiaea coronaria subsp. coronaria A. Simontacchi 1940-6-15 871 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat 1767 Comment
  CAS-BOT-BC144333  Bromus R. E. Frenkel 1964-7-12 666 Lassen On California Highway 299, 1.5 mile west of Bieber. 1249 Comment
  CHSC110715  Bromus briziformis Dean Wm. Taylor 2005-6-29 19380 Lassen Modoc Plateau. Piute Creek, 3 miles west from western edge Susanville. 1310 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
  UC1136817  Bromus carinatus var. carinatus George A. Fischer, Irwin H. Johnson 1933-7-12 F 231 Lassen Lassen National Forest, Patterson Flat Patterson Flat; Lassen National Forest, Patterson Flat 1737 Comment
  UC1143035  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1820 Comment
  POM115036  Bromus catharticus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  JEPS95805  Bromus commutatus Vernon H. Oswald and L. Ahart 1999-6-9 9750 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  JEPS96125  Bromus commutatus Vernon H. Oswald and Lowell Ahart 1996-6-17 7788 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, trail at hwy 36 bridge spanning Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  UCD58445  Bromus commutatus R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. Comment
  UCD58457  Bromus commutatus A. A. Beetle 1941-6-28 2810 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  UCD58463  Bromus commutatus L. D. Whitney 1935-6-23 s.n. Lassen Fruit Growers Supply Co., Camp #10. Comment
  UCD58839  Bromus inermis M. C. Collins 1926-6-14 s.n. Lassen Susanville. Comment
  OBI82789  Bromus japonicus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3923 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  UC1131324  Bromus suksdorfii A. Simontacchi 1940-6-24 891 Lassen 6.4 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1950 Comment
  CAS-BOT-BC161416  Bromus tectorum Farris Farris 1935-6-15 s.n. Lassen Susanville. 1310 Comment
  CHSC31983  Bromus tectorum L. Ahart; J. T. Howell 1974-7-9 535 Lassen Along the rd 4.5 mi w of Susanville. 1584 Comment
  RSA715626  Bromus tectorum L. Ahart, John Dittes 2005-6-1 11909 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  UC1024646  Bromus tectorum Leo Whitney 1933-7-8 2209 Lassen 8 mi nw of Eagle Lake (Lassen National Forest, Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UC1024827  Bromus tectorum Leo Whitney 1935-7-12 3233 Lassen Lassen National Forest, Camp 10, Fruit Grower's Supply Company Lassen National Forest; , Camp 10, Fruit Grower's Supply Compa Comment
  UC1137124  Bromus tectorum August L. Hormay 1929-5-20 Lassen Lassen National Forest, Hat Creek Hat Creek; Lassen National Forest, Hat Creek Comment
  UCD57776  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Lassen National Forest. Westwood Junction. 1737 Comment
  CHSC113088  Calandrinia ciliata Lowell Ahart; John Dittes 2013-7-22 18876 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
  RSA772870  Callitriche hermaphroditica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47204 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UCD149989  Callitriche palustris William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  CHSC12475  Calocedrus decurrens Carol Weld 1969-6-20 12 Lassen Forest Service number 516.2. 1676 Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  CHSC6271  Calochortus macrocarpus A. Santos 1946-7-5 Lassen East side of Eagle Lake. 1615 Comment
  SEINET8197399  Calochortus macrocarpus M. J. Williams 1969-6-22 s.n. Lassen N of Litchfield. 1372 Comment
  CAS-BOT-BC483436  Calochortus macrocarpus Frances D. Payne 1955-7-1 s.n. Lassen Hayden Hill Comment
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Aug 2 2017
  SEINET3260040 Image available Calochortus macrocarpus Marcus E. Jones 1897-7-1 Lassen Susanville at Perkin's Ranch. 1520 Comment
  CHSC80256  Calyptridium umbellatum Jeanne Boze 1981-6-13 111 Lassen On roadbed and northeast slope of Gallatin Peak. 1950 Comment
  UC420619  Calyptridium umbellatum Franklin P. Nutting Lassen Pine Creek Comment
  UC1537347  Calyptridium umbellatum Gordon H. True Jr. 1936-6-25 534 Lassen Hall's Valley 1524 Comment
  CDA39903  Calystegia occidentalis subsp. occidentalis T. C. Fuller 1965-6-3 13606 Lassen Chemically treated railroad right of way, Susanville. 0 Comment
  SDSU5718  Calystegia occidentalis subsp. occidentalis D. F. Howe 1964-8-1 3915 Lassen Modock National Forest. 1829 Comment
  CAS-BOT-BC497000  Camassia quamash Luella Bass 1980-6-14 EV 2 - 80 Lassen Elysian Valley Comment
  CHSC99737  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2008-6-20 14905 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  CHSC30609  Camassia quamash subsp. quamash G. A. Brown 1975-6-30 10 Lassen Across from Coleman Lake. 1920 Comment
  JEPS61547  Camassia quamash subsp. quamash Leland S. Smith 1927-6-10 14 Lassen Lassen National Forest, Norvell Flat Norvell Flat; Lassen National Forest, Norvell Flat 1747 Comment
  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
  HSC22959  Camissonia claviformis John Pratt 1970-7-5 65 Lassen 1250 Comment
  NY851231  Camissonia claviformis var. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale, on Highway 395 Comment
  HSC68913  Camissonia minor Gary Schoolcraft 1980-6-11 265 Lassen W of Wendel 1220 Comment
  RSA186551  Camissonia parvula Peter H. Raven 1962-5-28 17870 Lassen Along U.S. Highway 395, 32 miles south of Milford Comment
  HSC30040  Camissonia subacaulis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19152 Lassen 3 mi. N of Westwood Comment
  RSA74347  Camissonia subacaulis Milo S. Baker 1952-5-23 12418 Lassen Wet Spot, E of Chester, Hwy 36. Comment
  NY852070  Camissonia tanacetifolia A. R. Kruckeberg 1954-6-22 3322 Lassen 6 miles south of Likely on Highway 395 Comment
  CAS-BOT-BC160859  Camissonia tanacetifolia subsp. tanacetifolia A. M. Vollmer; L. Beane 1953-7-1 41 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC160876  Camissonia tanacetifolia subsp. tanacetifolia R. K. Gierisch; D. H. Esplin 1969-7-18 3550 Lassen Near Modoc National Forest. Madeline Plains Comment
  UC1924258  Capsella bursa-pastoris Debra Valov 2004-5-31 2004229 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC10331  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  UC10332  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC197292  Cardamine breweri Franklin P. Nutting Lassen Pine Creek 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
  UC117814  Cardamine nuttallii var. covilleana Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC99732  Cardamine oligosperma Lowell Ahart; John Dittes 2008-6-20 14942 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC18447  Carex abrupta George Wilson Gillett 1957-7-21 867 Lassen Lassen Volcanic National Park. Swale below (north of) summit of trail between Juniper Lake and Cameron Meadow. 2118 Comment
  CHSC58858  Carex angustata Vernon H. Oswald; Lowell Ahart 1992-7-16 5115 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  CHSC60428  Carex athrostachya Mary Ann Showers 1992-6-13 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC66412  Carex aurea Vernon H. Oswald; Lowell Ahart 1996-6-17 7814 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  UC1143011  Carex aurea August L. Hormay 1934-5-14 Lassen Gray's Flat Well Lassen National Forest, Gray's Flat Well 1706 Comment
  UC1108041  Carex brainerdii E. B. Copeland 1932-8-15 Lassen below Raker Peak (woods by Lost Creek); Mount Lassen, Lost Creek 1889 Comment
  SEINET3900583  Carex douglasii D. H. Norris, T. Nelson; Steve Dowty 1971-6-22 19246 Lassen About 2 miles north of Westwood, California.; 0 Comment
  UC1142952  Carex filifolia var. erostrata A. L. Hormay 1941-6-26 238 Lassen Bogard Ranger Station Lassen National Forest, Pine Creek 1706 Comment
  CAS-BOT-BC22350  Carex filifolia var. filifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49194 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC21303  Carex fracta John Thomas Howell; Gordon H. True 1973-7-31 50047 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CAS-BOT-BC22275  Carex hassei John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49477 Lassen Elysian Valley, west of Janesville. 1325 Comment
  UC1609196  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC114410  Carex infirminervia Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. 6.5 or so air miles south of Susanville, in alder patch below the second aspen stand in an ephemeral drainage corridor upslope from the end of Road 29N07A. 1719 Comment
  CHSC115041  Carex inops subsp. inops Stephanie Puentes 2011-7-7 09419 Lassen Big Foot THP. In the Big Valley Mountains, west of Big Valley. About 5 air miles SW of Lookout and 6 air miles NW of Bieber. 1447 Comment
  HSC95192  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC67310  Carex microptera James D. Jokerst 1991-5-28 3295 Lassen Modoc Plateau. At the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. 1554 Comment
  UC1133499  Carex microptera A. Simontacchi 1940-7-3 917 Lassen 3.5 mi wsw Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET7568445 Image available Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen Coble Mountain 7.5' Quad. High Cascade Range, 0.6 km east of Road 111 and 1.3 km south of Road 35N60, about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  CHSC25910  Carex nebrascensis K. R. Stern 1967-6-25 2429 Lassen Road to Eagle Lake Biological Station, Dean's Meadow near Gallatin Peak, ca. 3 mi. S of Eagle Lake. 1676 Comment
  JEPS114767  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-20 14953 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET7568737 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7913 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  SEINET7484007 Image available Carex pachycarpa W. W. Eggleston 1927-1 21485 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  CAS-BOT-BC119255  Carex pachystachya John Thomas Howell 1934-7-6 12452 Lassen Harvey Valley. Comment
  CAS-BOT-BC119044  Carex pellita Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1828 Comment
  CHSC89743  Carex petasata L. P. Janeway 2004-6-26 8139 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
  CHSC91380  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11879 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS107838  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11877 Lassen about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  SEINET10585735  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 Ahart 17477 Lassen T38N, R10E, center of north 1/2 Section 22. 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. 1521 Comment
  UC1133503  Carex praegracilis Robert W. Gardner 1939-6-15 G- 37 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  UC1583985  Carex praegracilis G. Schoolcraft 1990-6-12 2087 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CAS-BOT-BC118400  Carex praegracilis John Thomas Howell 1975-7-23 51407 Lassen Wet ground along Hwy 395 between Johnstonville and Jonesville 1280 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  CAS-BOT-BC118740  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49455 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC48339  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19176 Lassen Harvey Valley near Cone Springs Comment
  JEPS118161  Carex rossii Dean W. Taylor 2009-5-20 20604 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  CHSC96453  Carex simulata Gordon Leppig; J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95325  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 509 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC115970  Carex subfusca Peter H. Raven; Otto Thomas Solbrig 1958-6-16 13253 Lassen 4.5 mi E of Westwood on St Hwy 36. Comment
  SEINET13720729  Carex subfusca B. L. Wilson, P. Zika 2011-8-7 16801 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  CAS-BOT-BC116614  Carex subfusca Hans Leschke 1954-7-3 s.n. Lassen Border of swamp north of Willow Lake. 1661 Comment
  CAS-BOT-BC115282  Carex utriculata W. B. Cooke; V. G. Cooke 1976-10-7 53193 Lassen Butte Lake, Near lake shore, Lassen Volcanic National Park. Comment
  CHSC96454  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95279  Carex vesicaria Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 693 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95282  Carex vesicaria Gordon Leppig 1998-6-12 932 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95286  Carex vesicaria Gordon Leppig 1998-8-17 1039 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC62002  Castilleja applegatei Eenam Sin 1992-6-3 23 Lassen 1 mi s of 4-carners on road to Gallatin Peak. 1524 Comment
  HSC31355  Castilleja applegatei D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19187 Lassen Harvey Valley near Cone Springs Comment
  JEPS76164  Castilleja applegatei subsp. pallida T. I. Chuang with Fei-Mei Chuang 1977-7-25 7659 Lassen 7.1 mi W of Madeline (on road to Adin) Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  UC1063044  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  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
  JEPS127584  Castilleja chromosa B. Castro with L. P. Janeway 2015-6-5 2094 Lassen Great Basin. Near the SE corner of the Warner Mountains. Along W side of Tuledad Road ca 3 air mi NE of Dodge Reservoir and 0.5 road-mi S of W end of Tuledad Canyon, on gentle NE-facing slope. Little Hat Mtn 7.5' Quad. Comment
  UCD55272  Castilleja chromosa Ellen Dean 2006-5-15 3082 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. Northern part of Johnston property near sandy wash. 1249 Comment
  CHSC60852  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1993-6-28 5575 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  CHSC66262  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1996-6-24 7842 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow. 1633 Comment
  JEPS81867  Castilleja lacera L. R. Heckard with J. C. Hickman 1982-5-11 5841 Lassen about 2.5 mi w Paynes Creek (along Highway 36 to Mt Lassen (6.5 mi ne of Dales)) 518 Comment
  UC1012486  Castilleja lacera Francis W. Pennell 1940-6-7 25723 Lassen 4-5 mi w Nubieber (Route 299) 1097 Comment
  JEPS76163  Castilleja linariifolia T. I. Chuang with Fei-Mei Chuang 1977-7-25 7660 Lassen 10 mi w Madeline Comment
  CAS-BOT-BC244896  Castilleja miniata Clare B. Hardham 1971-8-22 18382 Lassen Granitic slope west of Janesville Comment
  RSA46750  Castilleja miniata J. T. Howell 1934-6-10 11871 Lassen Janesville Comment
  CHSC81564  Castilleja minor subsp. minor Vernon H. Oswald 2001-9-26 10058 Lassen Dakin Unit of Honey Lake Wildlife Area. 1219 Comment
  CHSC37346  Castilleja pilosa Jenifer Estep 1978-6-27 17 Lassen SE of Eagle L. at Mahogany L. Comment
  CHSC60771  Castilleja pilosa Vernn H. Oswald; Lowell Ahart 1993-6-14 5525 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
  CHSC66406  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1996-6-17 7802 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  JEPS114693  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-20 14944 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  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
  UC1012485  Castilleja tenuis Francis W. Pennell 1940-6-7 25727 Lassen 8 mi e Nubieber (Route 299) 1310 Comment
  UC1143036  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen National Forest 1743 Comment
  UC27205  Castilleja tenuis J. Burtt Davy Jun 17 1897-Jun 24 1897 3359 Lassen Adobe meadows; Honey Lake Valley Comment
  UC717969  Castilleja tenuis David D. Keck 1944-6-8 5444 Lassen 2 mi e Westwood (near Mountain Meadows Reservoir) 1524 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
  UC1477727  Caulanthus major var. nevadensis Teresa Prendusi 1980-7-21 30 Lassen Fredonyer Peak 2377 Comment
  POM85246  Ceanothus cordulatus Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  SEINET210873  Ceanothus cordulatus N. H. Holmgren, JJ Fay; BLBethers 1970-6-24 4373 Lassen 2 miles west of Westwood at edge of airstrip 1554 Comment
  CAS-BOT-BC49259  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7991 Lassen Big Valley Mts. Comment
  CAS-BOT-BC52055  Ceanothus prostratus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16317 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  CHSC4984  Ceanothus prostratus R. Clicquennoi 1967-7-4 5 Lassen 5 mi s of Eagle Lake Biology Station on Gallatin Beach Rd. Comment
  POM339726  Ceanothus prostratus F. R. Fosberg 1969-8-15 51427 Lassen 10miles W of Susanville Comment
  HSC30197  Ceanothus prostratus var. laxus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19257 Lassen Harvey Valley near Cone Springs Comment
  SBBG14876  Ceanothus prostratus var. prostratus A. I. Richardson 1961-5-30 4 Lassen rd S of Eagle Lake, 13 mi W of Susanville Comment
  CDA7223  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  UCR57551  Centaurea maculosa R. D. Goeden, Don W. Ricker 1989-8-22 890822- 8 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  CDA7341  Centaurea squarrosa Loring White Jul 1950 Lassen Kramer Ranch, Big Valley, just over line Modoc-Lassen. 0 Comment
Read comments
May 19 2009
  CDA35515  Centaurea squarrosa CDFA Staff 1986-6-18 s.n. Lassen Near Nubieber, off Hwy 299. 0 Comment
  CHSC113010  Centaurea virgata subsp. squarrosa Lowell Ahart; John Dittes 2013-7-23 18910 Lassen Near the summit on the north side of the Highway 299, at entrance road to quarry site, Big Valley Mountain, just east of Big Valley Summit, 2.8 miles (air) southwest of Nubieber. 1408 Comment
  CAS-BOT-BC106074  Centaurea virgata subsp. squarrosa Barrett Anderson 1986-7-9 3128 Lassen Road to Day, about 2.4 km N of Rte 299. 1065 Comment
  SEINET13331314 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  UCD130125  Centaurea virgata subsp. squarrosa W. T. Parsons; T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley. Comment
  UCD130126  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley. Comment
  NY187215  Centaurium exaltatum B. J. Ertter 1987-7-24 7305 Lassen Ca. 3/4 mi ENE of Beckwourth Pass at end of crumbling paved road. 1524.0 Comment
  CHSC29928  Cerastium fontanum subsp. vulgare Robin L. Ondricek 1978-6-16 77 Lassen In the meadow below the dam at Murrers Upper Meadow. 1548 Comment
  POM101579  Cerastium glomeratum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  HSC23531  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  CAS-BOT-BC400182  Ceratophyllum demersum B. Trowbridge 1977-8-9 5986 Lassen Water of Willow Creek near Rice Canyon northeast of Susanville 1524 Comment
  HSC26513  Cercocarpus ledifolius J. P. Smith, J. O. Sawyer 1972-5-6 5241 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
Read comments
Apr 29 2013
  JEPS124551 Image available Cercocarpus ledifolius P. L. Billings 1965-7-12 90 Lassen 5 mi. N of Susanville on Hwy 139 - 50 yds from road. Comment
  CHSC68761  Cercocarpus ledifolius var. intermontanus Vernon Oswald; Lowell Ahart 1997-5-27 8513 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 1.4 mi east of Hwy. 139. 1645 Comment
  JEPS126473  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -063 Lassen Take 139 north to Fredonyer Peak. Comment
  JEPS94488  Cercocarpus ledifolius var. intermontanus Vernon H. Oswald and Lowell Ahart 1997-5-27 8513 Lassen 1.4 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling the road); Forest Route 38N04 1645 Comment
  CAS-BOT-BC143808  Cercocarpus ledifolius var. ledifolius L. B. Barlow 1967-7-15 130 Lassen Eagle Lake Biological Station, east central side of Eagle Lake 1554 Comment
  CHSC21174  Cercocarpus ledifolius var. ledifolius M. S. Taylor 1974-5-4 226 Lassen Scattered on e side of marsh, ca. 1/2 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. Comment
  CHSC4884  Cercocarpus ledifolius var. ledifolius Bill Wilson 1967-7-19 208 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  UC773879  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  CAS-BOT-BC276618  Chaenactis douglasii var. douglasii John Thomas Howell 1934-7-8 12497 Lassen Spalding's Eagle Lake Comment
  JEPS117489  Chaenactis douglasii var. douglasii Lowell Ahart, John Dittes 2010-7-31 16984 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
  JEPS30488  Chaenactis douglasii var. douglasii Peter H. Raven with Otto T. Solbrig 1958-6-17 13291 Lassen 0.4 mi s of Ravendale (along U.S. Highway 395) Comment
  UC579800  Chaenactis douglasii var. douglasii David D. Keck and J. Clausen 1935-6-25 3755 Lassen just w of town Susanville 1300 Comment
  UC1777700  Chaenactis douglasii var. douglasii Donald W. Kyhos 1967-9-1 67 -88 Lassen Mt. Lassen National Park. Area within 1/2 mile north of Hat Lake. Pumice slopes Comment
  CDA10717  Chaenactis glabriuscula var. megacephala T. C. Fuller 1963-6-1 10628 Lassen East side of road to Hall s Flat, 4.9 miles south of Pittville. 0 Comment
  UCD19699  Chaenactis nevadensis Donald W. Kyhos 1967-9-1 67 -87 Lassen Mount Lassen National Park, in the devastated area within 1/2 mile north of Hat Lake. Comment
  CHSC4937  Chamaebatiaria millefolium W. Lessig 1967-7-15 30 Lassen 1/8 mi se of Eagle Lake Biology Station. 1554 Comment
  UC1125091  Chamaesaracha nana Robert W. Gardner 1937-6-20 G- 23 Lassen Burgess Spring Experimental Range; Halls Flat Quad. 1699 Comment
  CHSC66385  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7771 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  JEPS121284  Chenopodium album Lowell Ahart 2013-7-22 18859 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET4171909  Chenopodium leptophyllum M. J. Williams 1974-7-26 74 -L-36 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  UC1594604 Image available Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake S side of Hwy 44, between Old Station and Susanville, 1.2 mi SE of County Road A21 1745 Comment
  CAS-BOT-BC451356  Chimaphila menziesii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain: Susanville. Perkin's Ranch 2133 Comment
  UC1483847  Chimaphila umbellata G. Schoolcraft 1980-7-29 343 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  CHSC64884  Chorizanthe watsonii Vernon H. Oswald; Lowell Ahart 1995-6-19 6891 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. In small openings between brush on a slope on the n side of the road. 1383 Comment
  CAS-BOT-BC247862  Chorizanthe watsonii John Thomas Howell 1962-6-19 37885 Lassen 3 mi. s. of Hallelujah Junction 1524 Comment
  UCSB17200  Chorizanthe watsonii Hardham, Clare 1961-6-17 Lassen Baxter Cr. south of Susanville, Sierra Nevada Mountains 1524 Comment
  UCSB62935  Chrysolepis sempervirens Sarr, Dan 1995-7-31 Lassen within crater of Crater Mountain 670 Comment
  CAS-BOT-BC140659  Chrysothamnus humilis John Thomas Howell 1974-7-9 50485 Lassen SW of Wildcat Point, Eagle Lake 1554 Comment
  UC1137593  Chrysothamnus humilis L. R. Short and J. Warren 1936-8-17 S- 495 Lassen Burgess Spr. Exp. Range Lassen Forest 1760 Comment
  UC1137594  Chrysothamnus humilis George A. Fischer and Irwin H. Johnson 1933-9-8 F- 281 Lassen w end of Patterson Flat; Lassen Forest, Patterson Flat 1706 Comment
  CDA10774  Chrysothamnus nauseosus subsp. albicaulis M. R. Pryor 1953-9-22 Lassen Stacey. 0 Comment
  RSA3395  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile east of Termo 1646 Comment
  UCD35728  Chrysothamnus viscidiflorus Beecher Crampton 1960-6-18 5709 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  HSC103551  Chrysothamnus viscidiflorus subsp. viscidiflorus Thomas W. Nelson, Jane Nelson 1985-8-10 8030 Lassen Along north side of Silver Lake 1829 Comment
  SEINET515878  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald 1998-9-8 9587 Lassen Kramer Rd. 3.1 mi S of Lookout. 1280 Comment
  CAS-BOT-BC162755  Chylismia claviformis subsp. cruciformis A. A. Heller 1938-6-23 15211 Lassen On an extensive flat north of Balls Canyon on U.S. Highway #395 Comment
  JEPS103168  Chylismia claviformis subsp. cruciformis Beth Corbin 2002-5-1 1065 Lassen Honey Lake Valley, about 2 mi SE of Wendel. 1234 Comment
  CAS-BOT-BC162757  Chylismia claviformis subsp. cruciformis Philip A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravensdale, on Highway 395 1341 Comment
  CHSC5034  Cichorium intybus L. B. Barlow 1967-7-6 108 Lassen 2 mi. west Murrer's Ranch turn off, 14.9 mi. north of Susanville, Calif., Highway 139. 1463 Comment
  SEINET10725178  Cichorium intybus Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 133 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC184828  Cinna latifolia Clare B. Hardham 1971-8-22 18408 Lassen Diamond Mountain. 2133 Comment
  JEPS128416  Cirsium andersonii Catherine Bauer with Ellen Bauer Benson 2017-8-16 23 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC1035883  Cirsium andersonii Annie M. Alexander and Louise Kellogg 1946-8-13 5156 Lassen w side of Eagle Lake Eagle Lake Comment
  UC773847  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spring Experiment Range 1825 Comment
  SD61012  Cirsium andersonii Darley F. Howe 1964-8-1 3911 Lassen 3.3 miles on ridge road above Harvey Creek, Warner Mountains; Modoc National Forest. 1950 Comment
  SDSU3763  Cirsium andersonii D. F. Howe 1964-8-1 3911 Lassen 3.3 miles on ridge road from Harvey Creek, Warner Mts., Modoc National Forest. 1951 Comment
  UCD159574  Cirsium arvense D. S. Park 2011-6-27 311 -1 Lassen East of Westwood. Growing near Willard Creek. Comment
  CAS-BOT-BC278008  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8307 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC278011  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen 7 mi N/road to Karlo Comment
  RSA0070595  Cirsium cymosum Michael A. Vincent 1999-6-9 8575 Lassen Bureau of Land Management land, Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), S of BLM road 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  SEINET2050011 Image available Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  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
  RSA186825  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 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
  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
  RSA186832  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC280424  Cirsium ochrocentrum Lee E. Wheeler 1959-7-23 s.n. Lassen M. A. Mallory prop. Richmond Rd., ca. 4 mi SE/Susanville Comment
  CDA32840  Cirsium ochrocentrum CDFA Staff 1985-6-3 Lassen Madelaine Plains 0 Comment
  CDA37712  Cirsium ochrocentrum Breckenridge/Filippini 2007-6-13 s.n. Lassen Madeline Plains, western edge, along Westside Road, old Basque homestead. 0 Comment
  CDA1520  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1523  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen Honey Lake; M.A. Mallory prop. Richmond Rd., about 4 mi. SE of Susanville. 0 Comment
  CAS-BOT-BC286303  Cirsium scariosum Alice Eastwood; John Thomas Howell 1940-6-11 7961 Lassen Eastern Fall River Valley Comment
  UC74064  Cirsium scariosum J. Burtt Davy Jun 14 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CDA1561  Cirsium scariosum var. americanum T. C. Fuller 1959-7-6 2979 -B Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  CDA1562  Cirsium scariosum var. americanum D. Chambers, M. Carstens 1979-8-22 s.n. Lassen Modoc National Forest, private inholding, south side of Juniper Creek. 0 Comment
  RSA286400  Cirsium undulatum T. C. Fuller 1980-8-5 20311 Lassen North side of road to campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale Comment
  CHSC23510  Cirsium vulgare Wayne O. Baum 1971-7-6 71 -56 Lassen Slope of Gallatin Peak. 1981 Comment
  CHSC7631  Cirsium vulgare Beverley J. Wise 1968-8-23 16 Lassen 10 mi. N.W. of Susanville on the Las. Co. Rd. 201. 1798 Comment
  CAS-BOT-BC439002  Cistanthe monosperma A. A. Heller 1938-6-4 15139 Lassen One mile east of Westwood 1524 Comment
  CAS-BOT-BC233915  Cistanthe umbellata A. M. Vollmer; L. Beane 1953-7-1 32 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC233917  Cistanthe umbellata G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley RNA 1554 Comment
  JEPS88247  Clarkia gracilis subsp. gracilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7792 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, just sw of parking area at Devils Corral Trailhead); Modoc Plateau 1420 Comment
  CHSC9542  Clarkia lassenensis A. W. Harvilik 1967-6-30 18 Lassen Collected near the junction of rd. 5.19 and the rd. to Murrer's Meadow. 1524 Comment
  UC930759  Clarkia lassenensis C. L. Hitchcock 1940-5-26 6610 Lassen ca. 12 mi n Fall River Mills; Fall River 1371 Comment
  CAS-BOT-BC164866  Clarkia rhomboidea Louella Bass 1973-5-29 EV 63 Lassen Elysian Valley 1325 Comment
  CHSC61167  Claytonia lanceolata Vernon H. Oswald; Lowell Ahart 1993-5-12 5381 .1 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, on the edge of a large meadowy opening covered with sagebrush scrub along Pine Creek. 1737 Comment
  CAS-BOT-BC439760  Claytonia rubra subsp. depressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49179 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC443732  Claytonia rubra subsp. rubra A. M. Vollmer; L. Beane 1953-7-1 75 Lassen Along [Halls Flat] road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC7734  Claytonia rubra subsp. rubra Beverly J. Wise 1969-4-29 81 Lassen 3.4 mi. north of Susanville on Hwy 139 at the junction with Round Valley Road. 1341 Comment
  JEPS126532  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 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
  SEINET3153948  Cleome platycarpa J. L. Strother 1970-5-23 951 Lassen About 6 miles N of Honey Lake, at ca. 4200 feet elevation. 1280 Comment
  CAS-BOT-BC423197  Cleomella parviflora Arnold Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel 1231 Comment
  JEPS42688  Cleomella parviflora J. Burtt Davy Jun 17 1897-Jun 24 1897 3352 Lassen Amedee Honey Lake Vally Comment
  NY242421  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 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
  JEPS23850  Collinsia parviflora Peter H. Raven, Otto T. Solbrig 1958-6-16 13249 Lassen 4.5 mi e Westwood (on St Hwy 36) Comment
  UC1951082  Collinsia parviflora Debra Valov 2009-4-24 2009009 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  HSC63960  Collinsia parviflora Teresa Prendusi 1980-5-19 Lassen Saddle Rock. 1524 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
  CHSC6198  Collomia grandiflora P. Collett 1946-6-24 Lassen Spalding's, Eagle Lake. 1554 Comment
  HSC63767  Collomia grandiflora Teresa Prendusi 1980-5-19 Lassen 1 mi. N of Saddle Rock, 16 mi. S of Ravendale along Hwy. 395 1524 Comment
  SEINET12319536  Collomia grandiflora N. E. Heiken 1978-1 87 Lassen Lower Dry Lakes, E of Eagle L 1573 Comment
  UC23683  Collomia linearis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC23479  Collomia tinctoria Wayne O. Baum 1971-7-5 71 -11 Lassen E. slope of Gallatin Peak. 1981 Comment
  SBBG58209  Collomia tinctoria E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 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-BC286112  Conyza canadensis John Thomas Howell; Gordon H. True 1973-8-1 50154 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  UC761797  Cordylanthus ramosus R. F. Hoover 1940-9-28 4640 Lassen Leavitt Comment
  UC761815  Cordylanthus ramosus R. F. Hoover 1940-10-1 4655 Lassen Jonesville Comment
  SD43504  Cornus stolonifera Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground, above Milford. 1525 Comment
  UC581294  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2346 Lassen about 4 mi se Willow Creek Range Station (se of Adin) 1767 Comment
  CHSC118479  Crepis acuminata Don Lepley 2016-6-21 Lassen Lassen National Forest. Hat Creek Ranger District. Flat west of Blacks Mt., 0.2 mile west of junction of Roads 34N07 and 34N05Y. UTM 648055.1 E x 4515134.8N. 1726 Comment
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  CHSC60813  Crepis bakeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 Lassen N of Hwy 44 on Rd. 33N06, on the flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In woods bordering the road. A drying vernal pool is located in a forest opening nearby. 1798 Comment
  UC581278  Crepis bakeri subsp. cusickii G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2331 Lassen valley flat along road halfway between Bogard Ranger Station and Harney Valley 1630 Comment
  CAS-BOT-BC291553  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-10 2315 Lassen Black Mountain about a mile below the summit 1950 Comment
  JEPS107848  Crepis intermedia Lowell Ahart, John Dittes 2005-6-1 11918 Lassen Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  CAS-BOT-BC291548  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-7 2203 Lassen Susanville just west of the town on Inspiratin Point Comment
  CAS-BOT-BC291550  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-14 2335 Lassen Burgers Springs Experimental Range 1706 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
  UC773980  Crepis occidentalis L. R. Short and Wm. Gansberg S- 361 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1871 Comment
  CAS-BOT-BC376557  Crepis occidentalis subsp. conjuncta A. A. Heller 1938-6-23 15201 Lassen Valley east of Fredonyer Pass Comment
  CAS-BOT-BC290742  Crepis occidentalis subsp. costata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2320 Lassen Black Mountain about a mile below the summit 1940 Comment
  CAS-BOT-BC376502  Crepis occidentalis subsp. occidentalis David D. Keck; J. Clausen 1935-6-24 3752 Lassen 2 miles south of Ravendale 1463 Comment
  CHSC105239  Crepis occidentalis subsp. pumila Lowell Ahart; John Dittes 2010-7-31 16982 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1137698  Crepis occidentalis subsp. pumila A. Simontacchi 1940-6-11 845 Lassen 3.1 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  CDA4450  Crepis occidentalis subsp. pumila T. C. Fuller 1963-6-1 10619 Lassen West side of road to Susanville, 2.0 mi. south of Pittville. 0 Comment
  CHSC4443  Crepis pleurocarpa K. R. Stern 1967-6-24 2421 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  RSA647827  Cryptantha Marion P. Harthill 1971-6-20 206 Lassen Susanville Comment
  CHSC23567  Cryptantha affinis W. O. Baum 1971-7-6 28 Lassen E slope of Gallatin Peak. 1950 Comment
  SDSU20522  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 522 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  SEINET8518912  Cryptantha ambigua R. R. Halse 2004-7-8 6616 Lassen Along State Highway 139, ca 6 miles N of Eagle Lake. 1710 Comment
  UC726048  Cryptantha ambigua A. A. Heller 1938-6-23 15206 Lassen e of Mapes (on U.S. Highway 395) 1371 Comment
  CAS-BOT-BC189325  Cryptantha circumscissa Margaret Williams; Steven Williams 1974-7-26 74 -L-17 Lassen Near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  CHSC93236  Cryptantha circumscissa John Dittes; Scott Chamberlain 2004-6-28 1010 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  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
  UC577869  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  UC699733  Cryptantha circumscissa Farris Farris 1936-6-5 Lassen Airport, Susanville Susanville 1280 Comment
  UCD55276  Cryptantha circumscissa Ellen Dean 2006-5-15 3091 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  UCD55289  Cryptantha flaccida Ellen Dean; Gary Schoolcraft 2006-5-16 3110 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1260 Comment
  RSA0065500  Cryptantha hendersonii Marion P. Harthill 1972-6-17 817 Lassen Ravendale. 1524 Comment
  NY1111719  Cryptantha intermedia var. grandiflora N. H. Holmgren 1980-7-3 9474 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CHSC71075  Cryptantha pterocarya var. pterocarya Vernon H. Oswald; Lowell Ahart 1998-5-22 9112 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  UC402818  Cryptantha torreyana Milo S. Baker Jul 1912 Lassen Pine Creek Comment
  SDSU20527  Cryptantha torreyana var. torreyana Nuri Benet-Pierce, John P. Pierce 2012-7-14 529 Lassen Diamond Mountain 2054 Comment
  RSA0049668  Cusickiella douglasii Dean Wm. Taylor 2012-5-15 21198 Lassen Hayden Hill Mine region, stony flats along the county road about 1 mile East of Snyder Waterhold 1722 Comment
  SEINET248370  Cusickiella douglasii Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC114052  Cyperus squarrosus John Thomas Howell 1974-7-10 50523 Lassen Elysian Valley 1325 Comment
  UC4436  Cypripedium californicum Mrs. R. M. Austin 1882-1 Lassen Mt. Dyer Comment
  CAS-BOT-BC70565  Cystopteris fragilis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16356 Lassen near NE end of Eagle lake Comment
  UC1522132  Dalea ornata Arnold Tiehm, Raymond Evans, and James Young 1984-6-7 8592 Lassen 7.5 air mi. n.-n.w. of Litchfield (n.w. side of Shaffe Mt.); Shaffe Mt. 1371 Comment
  UC1130605  Damasonium californicum Robert W. Gardner 1937-6-26 G- 25 Lassen Poison Lake Halls Flat Quad., Poison Lake Comment
  UC1137760  Damasonium californicum August L. Hormay 1934-5-14 Lassen Poison Lake Lassen Nat'l Forest, Poison Lake 1706 Comment
  UC1731161  Damasonium californicum Dean W. Taylor 1974-6-14 3714 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd. Poison Lake; Modoc Plateau 1615 Comment
  CAS-BOT-BC445518  Damasonium californicum Elmer I. Applegate 1929-6-24 5882 Lassen Near Bieber Comment
  RSA245244  Damasonium californicum John Pratt 1970-6-21 33 Lassen [No locality information provided] Comment
  UCD21047  Damasonium californicum E. Bortiri 2002-7-19 WFC 83 Lassen Bear Valley Reservoir, Rd 35N08 to Long Valley from Hwy 44, Lassen Co. Comment
  HSC68921  Danthonia californica Gary Schoolcraft 1980-7-28 329 Lassen E of Tule Mountain and S of Blue Lake. 2043 Comment
  UC506937  Danthonia californica var. americana George A. Fischer and Irwin H. Johnson 1933-7-12 F 236 Lassen Patterson Flat Lassen National Forest 1737 Comment
  UCD60727  Danthonia californica var. americana F. C. Raney 1966-6-25 s. n. Lassen Harvey Valley, Lassen National Forest. Comment
  CHSC66420  Danthonia unispicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7803 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  UC1136812  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  UC773969  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  CAS-BOT-BC291778  Deinandra lobbii G. Schoolcraft 1989-7-24 1997 Lassen West of Hayden Hill Mine along road Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  UC1583981  Delphinium andersonii G. Schoolcraft 1990-6-12 2090 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC726248  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  UC854041  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  CAS-BOT-BC217332  Delphinium andersonii Leland S. Smith 1917-6-2 23 Lassen Parsnip Creek - Sec 35. 1524 Comment
  UCD95650  Delphinium andersonii James D. Jokerst 1983-5-30 1794 Lassen Ca.1.5 mi. N of Eagle Lake, ca. 50 m W of Hwy. 139, ca. 1.0 I N of Eagle Lake Rd. Comment
  CHSC36468  Delphinium nudicaule Jeffrey R. Peek 1982-6-3 29 Lassen Ca. .3 mi s jct of forest service roads 5.16 and 5.17, heading toward 5-corners. Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  CAS-BOT-BC116047  Delphinium nuttallianum George Wilson Gillett 1957-7-21 863 Lassen Juniper Lake - Cameron Meadow trail; on wet swale 300 yards north of trail summit. 2118 Comment
  HSC27054  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  CAS-BOT-BC194256  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-7 12463 Lassen Near Feather Lake Comment
  JEPS28309  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-8-9 1008 Lassen E. Fork of Hat Creek near Summit Lake Ranger Station; Lassen Volcanic Nat'l Park, E. Fork Hat Creek 2026 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
  CAS-BOT-BC192745  Deschampsia danthonioides Malcom A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  CHSC112783  Deschampsia danthonioides Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18754 Lassen Drainage filled with dirt from the 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
  CHSC29861  Deschampsia danthonioides Robin L. Ondricek 1978-7-15 102 Lassen Where the spring arises above the dam at Murrers Upper Meadow. 1548 Comment
  HSC9591  Deschampsia danthonioides D. E. Anderson 1969-7-5 4994 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  JEPS88325  Deschampsia danthonioides Vernon H. Oswald and Lowell Ahart 1996-6-24 7840 Lassen 2.5 mi. s. of Eagle Lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), Papoose Meadows, w. side of meadow just s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1483828  Deschampsia danthonioides G. Schoolcraft 1980-7-28 331 Lassen meadow area e. of Tule Mt. 2042 Comment
  UCD61873  Deschampsia danthonioides A. A. Beetle 1941-6-28 2816 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CAS-BOT-BC201807  Deschampsia elongata George W. Gillett 1957-7-28 925 Lassen Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake 1859 Comment
  CAS-BOT-BC201882  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Banks of Widow Lake 2072 Comment
  CAS-BOT-BC43090  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  SEINET5343182  Descurainia paradisa var. paradisa F. B. Headley 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  CHSC29947  Descurainia pinnata Robin L. Ondricek 1978-6-19 62 Lassen Around Eagle Lake Field Station. 1554 Comment
  UC1143030  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  CAS-BOT-BC43166  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9327 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CAS-BOT-BC43167  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9325 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CAS-BOT-BC43486  Descurainia sophia James Jokerst 1983-5-31 1790 Lassen Near Madeline Plains. 1583 Comment
  CDA43000  Descurainia sophia L. Ahart, John Dittes 2008-6-2 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. Comment
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Oct 5 2019
  UC1126908  Descurainia sophia A. Simontacchi 1940-6-8 828 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CAS-BOT-BC292258  Dieteria canescens Clare B. Hardham 1969-8-28 17430 Lassen West of Janesville Comment
  UC223695  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Money Lake Valley Comment
  UC506907  Dieteria canescens var. shastensis George A. Fischer and Irwin H. Johnson 1933-7-14 F- 268 Lassen Lassen Forest 1752 Comment
  UC86850  Dieteria canescens var. shastensis Wm. M. Canby 1897-9-1 138 Lassen Mt. Shasta Comment
  CAS-BOT-BC153674  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8673 Lassen Near Old Chat Comment
  CHSC26185  Diplacus mephiticus J. P. Kroessig 1977-5-23 28 Lassen Small scattered population at Eagle Lake Biological Station (CSUC), ca 37 km nnw of Susanville. 478 Comment
  CHSC26186  Diplacus mephiticus J. P. Kroessig 1977-5-23 30 Lassen Large scattered population at Eagle Lake Biological Station, ca 37 km nnw of Susanville. 1570 Comment
  CHSC36479  Diplacus mephiticus Margaret E. Halloran 1982-6-6 10 Lassen Pine Creek just below fish trap where Pine Creek empties into Eagle lake. Comment
  CHSC60776  Diplacus nanus Vernon H. Oswald; Lowell Ahart 1993-6-3 5482 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 1.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the NW edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  SBBG15309  Diplacus torreyi H. and M. Dearing 1938-7-1 2245 Lassen 17 mi W of Susanville Comment
  CHSC115787  Distichlis spicata Lowell Ahart; John Dittes 2015-7-14 20333 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  JEPS123846  Distichlis spicata Lowell Ahart, John Dittes 2015-7-14 20333 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC573727  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock 1341 Comment
  SACT001016  Distichlis spicata var. stricta Verne Grant, Irving Schneider 1947-9-5 Lassen Rhizomatous, northwest shore of Eagle Lake Comment
  CAS-BOT-BC136180  Dodecatheon alpinum John Thomas Howell 1934-6-14 12114 Lassen Near Lost Lake - Warner Mountains 2438 Comment
  CHSC36491  Dodecatheon alpinum Theresa Costa 1982-6-4 35 Lassen Murrers Upper Meadow. Comment
  CHSC4945  Dodecatheon alpinum R. Carter 1967-6-23 549 Lassen 25 yds w of dam in Murrer's Meadow. Along rd to Murrer's Meadow. 1584 Comment
  POM76750  Dodecatheon alpinum subsp. majus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC559941  Dodecatheon conjugens Leo Whitney 1935-6-10 3211 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  CHSC106077  Downingia bacigalupii Lowell Ahart; John Dittes 2010-7-31 17013 Lassen Bottom of small wash, 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
  CHSC5223  Downingia bacigalupii J. B. Kimsey 1946-6-11 Lassen Eagle Lake. Pine Creek. 1584 Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 Comment
  JEPS117578  Downingia bacigalupii Lowell Ahart, John Dittes 2010-7-31 17013 Lassen Bottom of small wash, 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
  SJSU3292  Downingia bacigalupii J. W. Tilden 1960-6-27 1525 Lassen 5 mi E of Westwood on Moonlight Rd 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
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  JEPS58978  Downingia bicornuta var. bicornuta Wm. Anderson 1960-6-16 Lassen 0.25 mi s Mapes Ranch; Honey Lake Valley Comment
  SBBG69657  Downingia elegans S. W. Hutchinson -Jun-1925 494 Lassen Bieber 1270 Comment
  UC1520663  Downingia insignis Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9482 Lassen 4.6 mi s Ravendale (U.S. Highway 395) 1615 Comment
  UCR163273  Downingia insignis Jim Andre 1993-6-29 1410 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  CAS-BOT-BC266476  Downingia laeta Philip A. Munz 1947-5-20 11892 Lassen Milford 1264 Comment
  JEPS94137  Draba verna Vernon H. Oswald and Lowell Ahart 1998-5-22 9128 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts., 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  OBI78908  Draba verna Anthony Baniaga 2011-6-7 313 Lassen Lassen National Forest. Northwest area of Grays Valley, just South of intersection of 33N11 and 32N83Y. Poison Lake quadrangle. 1747 Comment
  SEINET5342791  Draba verna J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA. Comment
  JEPS106520  Drymocallis glandulosa var. glandulosa L. P. Janeway 2004-6-26 8154 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest 1750 Comment
  UC1028268  Drymocallis lactea var. austiniae A. Simontacchi 1940-6-6 825 Lassen 9.3 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad. Comment
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Oct 7 2008
  CAS-BOT-BC159342  Drymocallis lactea var. lactea Louella Bass 1973-6-14 106 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CHSC71071  Eatonella nivea Vernon H. Oswald; Lowell Ahart 1998-5-22 9122 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., 5 mi NE of Doyle. 1463 Comment
  JEPS120897  Elatine Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18752 Lassen Near pond, about 80 yards N of the 4 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
  CHSC116198  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20300 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS123970  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20296 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC60975  Elatine chilensis Lowell Ahart 1993-5-17 6954 Lassen On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. Comment
  CAS-BOT-BC112847  Eleocharis macrostachya Hans Leschke 1959-8-2 1588 Lassen Manzanita Lake 1781 Comment
  SEINET7586406 Image available Eleocharis montevidensis Unknown 1969-9-6 39258 Lassen Along Long Valley Creek, c 14 mi SE of Milford. 1311 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
  HSC95170  Eleocharis suksdorfiana Gordon Leppig 1998-8-17 1045 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM313177  Elodea nuttallii H. L. Mason, Verne Grant 1947-7-9 13292 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  CHSC5254  Elymus cinereus 1944-8-12 Lassen Eagle Lake. 1615 Comment
  CAS-BOT-BC227483  Elymus elymoides Margaret Williams; Steven Williams 1974-7-26 74 -L-42 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS122360  Elymus elymoides Joseph Broberg, Jaycee Leonard 2012-7-31 CA 320 -117 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left into the Mendibourne wildlife game management area. Collection is across a fence in BLM land 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
  UCD61535  Elymus elymoides L. D. Whitney 1935-6-25 Lassen Ashurst Mt. Comment
  CHSC25916  Elymus elymoides subsp. elymoides K. R. Stern 1967-6-30 2446 Lassen West central side of Eagle Lake. 1554 Comment
  UC1133050  Elymus elymoides subsp. elymoides A. Simontacchi 1940-6-13 858 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  HSC22391  Elymus elymoides var. californicus D. E. Anderson 1969-7-5 4996 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  JEPS126494  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-5 CA 350 -73 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  CAS-BOT-BC206729  Elymus glaucus subsp. glaucus L. S. Smith 1918-8-11 1021 Lassen Lost Lake, Camp One, Modoc Forest 2438 Comment
  UCD62368  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen On Gold Run Creek southwest of Susanville. 1386 Comment
  UCD62558  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Susanville. In city park. Comment
  CDA31738  Elymus trachycaulus T. C. Fuller 1963-7-15 10888 Lassen 2.9 miles southeast of Pittville, south of road to Little Valley 0 Comment
  UCD62664  Elymus trachycaulus L. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  CHSC92829  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2005-6-1 11880 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  CAS-BOT-BC204360  Elymus trachycaulus subsp. trachycaulus J. Burtt Davy 1897-6-17 s.n. Lassen Honey Lake Valley Comment
  CHSC115577  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2015-7-14 20332 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  HSC8755  Elymus trachycaulus subsp. trachycaulus M. T. Milligan 1964-8-6 205 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS117564  Elymus trachycaulus subsp. trachycaulus Lowell Ahart, John Dittes 2010-7-19 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
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Oct 5 2019
  UCD62694  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1932-7-1 Lassen Lassen National Forest. Bogard Ranger Station. Comment
  SEINET12758322  Elymus triticoides D. Snider 1942-8-30 s.n. Lassen Pine Creek Camp. 1524 Comment
  POM119924  Ephedra californica Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  CHSC111258  Ephedra viridis L. P. Janeway; B. Castro 2012-7-3 10940 B Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  CHSC33322  Ephedra viridis P. Reynolds 1979-7-4 17 Lassen 3 mi. NE of Wendel, Wendel Canyon in the Skedaddle Mtn. Range. 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
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Dec 31 2006
  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
  LA6840  Ephedra viridis Carl Epling; William Robison 1935-7-15 sn Lassen Janesville Comment
  UC119065  Ephedra viridis Mrs. R. M. Austin 1876-7-1 285 Lassen e of Susanville; Antelope Grade Comment
  UCD14623  Ephedra viridis Nathan Horn 1989-5-18 14 Lassen Great Basin, along Highway 70. 1487 Comment
  CHSC29866  Epilobium brachycarpum Robin L. Ondricek 1978-6-27 72 Lassen .6 mi n of Five Corners along road to ELFS. 1706 Comment
  RSA123007  Epilobium brachycarpum L. R. Short, J. Warren 1936-6-23 S- 454 Lassen Burgess Spring Exp. Range, Lassen forest 1744 Comment
  SEINET12539665  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1136768  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  CHSC110908  Epilobium campestre Lowell Ahart; John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  JEPS127267  Epilobium campestre Lowell Ahart, John Dittes 2016-7-13 21128 Lassen 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  HSC95176  Epilobium ciliatum subsp. ciliatum Gordon Leppig, Kai Neander, Juli Neander 1997-7-26 690 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC100124  Epilobium ciliatum subsp. ciliatum M. T. Milligan 1964-7-16 143 Lassen 2 mi. W on Silver Lake Rd., along Upper Susan River 1829 Comment
  RSA0105579  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC59090  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5183 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Bottom of a cutbank of the creek where it enters the lake. 1853 Comment
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  UC773935  Epilobium hallianum L. R. Short and J. Warren 1936-6-11 S- 429 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1737 Comment
  CHSC59091  Epilobium hornemannii subsp. hornemannii Vernon H. Oswald; Lowell Ahart 1992-8-25 5184 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Along the bottom of a cutbank of a creek where it enters the lake. 1853 Comment
  POM260404  Epilobium minutum C. L. Hitchcock 1940-5-26 6609 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  CHSC27074  Epilobium oregonense Robert A. Schlising 1978-8-1 3333 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  SEINET3271523 Image available Epilobium oregonense Marcus E. Jones 1897-6-30 Lassen 4 mi below Eagle Lake 1524 Comment
  JEPS127276  Epilobium pallidum Lowell Ahart, John Dittes 2016-7-13 21127 Lassen 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC1122349  Epilobium pallidum A. Simontacchi 1940-6-5 853 Lassen 7.0 mi wnw Cones Headquarters; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1609446  Epilobium pallidum Vernon H. Oswald and Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd (33N18) 1.4 mi ssw Pittville Rd (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, bed of vernal pool on e side of rd) 1694 Comment
  CHSC117524  Epilobium torreyi Lowell Ahart; John Dittes 2016-7-13 21126 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miless (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC57305  Equisetum laevigatum Clare B. Hardham 1969-8-28 17458 Lassen west of Janesville Comment
  CAS-BOT-BC57236  Equisetum laevigatum Alice Eastwood; John Thomas Howell 1940-6-11 7996 Lassen Bieber Comment
  SBBG115768  Eragrostis mexicana subsp. virescens J. T. Howell 1976-7-19 51943 Lassen Susanville 1296 Comment
  CAS-BOT-BC174204  Eremogone congesta var. congesta Louella Bass 1973-6-3 91 Lassen Elysian Valley 1325 Comment
  RSA0057704  Eremogone congesta var. subcongesta Barbara Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  SJSU3559  Eremogone congesta var. subcongesta V. Hardham 1965-7-12 129 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139, Modoc National Forest 1463 Comment
  CAS-BOT-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC159995  Eremothera boothii subsp. alyssoides Mrs. C. C. Bruce 1898-6-1 2139 Lassen Shumway Comment
  CAS-BOT-BC159997  Eremothera boothii subsp. alyssoides Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 7 miles south of Secret Valley, C.C.C. Camp, U.S. Hy. 395 Comment
  SEINET4133353  Eremothera boothii subsp. alyssoides G. Schoolcraft 1980-5-30 247 Lassen Along road to Diaz Ranch 1359 Comment
  CHSC100870  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  JEPS69075  Eriastrum signatum W. L. Jepson 1918-8-2 7757 Lassen Beckwith Pass 1463 Comment
  RSA0124147  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau just above the flats along the S side of Rush Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  SEINET14592139  Eriastrum signatum R. R. Halse 2004-7-21 6669 Lassen At junction of US Hwy 395 and State Road A 26, ca 11 miles SE of Milford. 1274 Comment
  UC1178959  Eriastrum signatum Herbert L. Mason 1957-7-5 14714 Lassen s Madeline; Madeline Plains Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  RSA0125158  Eriastrum signatum Marcus E. Jones 1897-6-22 9972 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  UCD54567  Eriastrum sparsiflorum Ellen Dean; Dawn Cunningham 2005-10-25 2750 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  JEPS116872  Eriastrum sparsiflorum David Gowen 2007-7-12 784 Lassen Just off Hwy 395 south of Constantia at road crossing Long Valley Creek. Comment
  JEPS69071  Eriastrum wilcoxii W. L. Jepson 1918-8-2 7792 Lassen Long Valley 1219 Comment
Read comments
Nov 7 2008
  UC133905  Eriastrum wilcoxii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC349  Ericameria bloomeri 1944-7-31 Lassen Westwood. 1549 Comment
  POM40990  Ericameria bloomeri Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA79228  Ericameria bloomeri E. K. Balls, Percy C. Everett 1952-10-9 18134 Lassen About Plumas-Lassen county line, Hwy. 89, east of Lake Almanor. 1220 Comment
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Jul 1 2013
  SEINET5741365 Image available Ericameria bloomeri Lowell E. Urbatsch, Vensa Karaman 2000-1 7714 Lassen Collected along Forest Road 37N11, off of CA 139. 1220 Comment
  UCR57484  Ericameria bloomeri R. D. Goeden, Don W. Ricker 1989-8-24 32 Lassen Lassen National Forest, Black Gulch Road, c. 2 mi. west of Little Valley Road 1524 Comment
  CAS-BOT-BC287478  Ericameria greenei Ralph K. Gierisch 1968-7-11 3348 Lassen Harvey Valley, Lassen Forest 1676 Comment
  CHSC30574  Ericameria nauseosa Sori H. Shad 1970-6-19 37 Lassen Found north of E.L.B.S. in front of the Library. 1524 Comment
  CAS-BOT-BC298183  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-4 2397 Lassen Big Valley, 3.6 miles from Bieber on road to Alturas 1267 Comment
  UC527348  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 Lassen 3 mi from Wendel (on the road to Janesville); Honey Lake Valley 1219 Comment
  CAS-BOT-BC294182  Ericameria nauseosa var. speciosa Margaret Williams 1974-8-4 74 -L-71 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC76084  Ericameria nauseosa var. speciosa Lowell Ahart; Vernon H. Oswald 1999-9-13 8201 Lassen On the west side of the dirt road and 1/4 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  UC217104  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11679 Lassen near Lassen; Honey Lake Valley 1219 Comment
  UC527350  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 Lassen 0.5 mi from Janesville (on the road to Wendel, w edge of Honey Lake Valley); Honey Lake Valley 1280 Comment
  CHSC25084  Erigeron K. R. Stern 1967-6-24 2408 Lassen Murrer Meadow, Ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  SEINET201631  Erigeron aphanactis A. Cronquist, AH Holmgren 1959-6-17 8466 Lassen 50 mi SE of Susanville 1372 Comment
  SEINET8082921 Image available Erigeron bloomeri S. Jesselson, M. Gray 2015-5-28 NV 030 -1065 Lassen Plumas allotment: Hwy 395 into CA, first meian crossing after check station, turn right, follow road right (S), take 2nd left, follow uphill road bearing SE until reach gray metal gate. 1727 Comment
  CAS-BOT-BC294485  Erigeron bloomeri var. bloomeri John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50676 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CAS-BOT-BC294490  Erigeron bloomeri var. bloomeri David D. Keck; J. Clausen 1935-6-24 3745 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC117134  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2015-6-5 11777 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 13.0 road-km south of the junction a the west end of Tuledad Canyon; 6.8 road-km north of Stage Road (which is in the eastern corner of Madeline Plains); west side of a northeasern branch of Red Rock Creek. 1695 Comment
  CHSC48146  Erigeron bloomeri var. bloomeri Vernon Oswald 1986-6-15 2115 Lassen Road between Hwy 139 and Eagle Lake Biological Station, near Black Mtn. 1584 Comment
  CHSC99139  Erigeron bloomeri var. bloomeri Lowell Ahart; John Dittes 2008-6-19 14894 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-BC294487  Erigeron bloomeri var. bloomeri Ella Dales Cantelow 1941-5-22 3566 Lassen 2 1/ mi. n. of Secret Valley C.C.C. Camp. U.S. Hy 395 Comment
  CAS-BOT-BC294493  Erigeron bloomeri var. bloomeri Ella Dales Cantelow 1941-5-22 3566 Lassen Few mi. n. of Litchfield. U.S. Hy. 395 to Alturas Comment
  RSA636042  Erigeron bloomeri var. bloomeri Michael A. Vincent 1999-6-9 8583 b Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  UC1553393  Erigeron chrysopsidis var. austiniae G. Schoolcraft 1988-6-7 1811 Lassen about 14 air mi ne Ravendale 1737 Comment
  UC584273  Erigeron compositus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2286 Lassen s of Janesville (summit Thompson Peak); Thompson Peak 2346 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
  JEPS127271  Erigeron divergens Lowell Ahart, John Dittes 2016-7-13 21106 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS41774  Erigeron divergens W. L. Jepson 1918-8-2 7778 Lassen Beckwith Pass 1463 Comment
  JEPS97306  Erigeron divergens Vernon H. Oswald and L. Ahart 1995-8-14 7193 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  RSA516387  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  SEINET5708466 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  UC1583973  Erigeron divergens G. Schoolcraft 1990-7-11 2107 Lassen on e slopes Tule Mtn. 1767 Comment
  HSC81782  Erigeron eatonii var. plantagineus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6017 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 Comment
  UC1136837  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  CHSC5208  Erigeron filifolius var. filifolius 1946-6-14 Lassen Eagle Lake. 1584 Comment
  POM41676  Erigeron inornatus var. inornatus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET5708488 Image available Erigeron inornatus var. inornatus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7715 Lassen Grasshopper Valley. Collected along CA 139.; Grasshopper Valley 1586 Comment
  CAS-BOT-BC295472  Erigeron lassenianus var. lassenianus Parkison 1916-6-21 40 Lassen Lassen National Forest. Near Patterson Cabin 1706 Comment
  CHSC72299  Erigeron linearis L. P. Janeway; Glenn Clifton 1998-7-9 5729 Lassen Ridgetop saddle 1.0 mi east of Diamond Mtn. 2215 Comment
  HSC63962  Erigeron linearis Teresa Prendusi 1980-4-30 Lassen Upper slopes of Shaffer Mtn. 1738 Comment
  CHSC30580  Erigeron philadelphicus Sori H. Shad 1970-6-25 46 Lassen 3 mile from E.L.B.S. in Meadow. 1524 Comment
  RSA702451  Erigeron pumilus subsp. intermedius L. P. Janeway 2004-6-26 8163 Lassen High Cascade Range, alt peteeson Flat, Balcks Mtn Experimental Forest. 1767 Comment
  CAS-BOT-BC300119  Erigeron pumilus var. intermedius Clare B. Hardham 1961-6-17 7504 Lassen Sierra Nevada Mountains. Baxter Creek 1676 Comment
  CHSC116927  Eriogonum J. P. Bergmann 3011-04-30 Lassen Fort Sage OHV Recreation area. 1450 Comment
  CDA18265  Eriogonum baileyi G. D. Barbe 1974-8-2 1928 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UC762679  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen pass between Shaffer Mt. and Warren Peak Comment
  CHSC7738  Eriogonum caespitosum Beverley J. Wise 1969-5-3 78 Lassen 3.4 mi east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1584 Comment
  CAS-BOT-BC241878  Eriogonum cernuum R. F. Hoover 1940-10-5 4667 Lassen Wendel Comment
  UCR92117  Eriogonum cernuum 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
  RSA338584  Eriogonum collinum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9485 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  SD86297  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along U.S. Highway 395, 4.5 miles south of Ravendale, on a gravelly Artemisia flat. Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  NY570382  Eriogonum douglasii S. L. Welsh 2001-6-14 28154 Lassen East of Highway 395, road to Rams Horn Spring campground 1539.2 Comment
  UC1553394  Eriogonum douglasii var. douglasii G. Schoolcraft 1988-6-7 1812 Lassen 14 air mi ne Ravendale 1737 Comment
  CAS-BOT-BC246498  Eriogonum douglasii var. meridionale H. D. Ripley; R. C. Barneby 1943-6-13 5712 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC246503  Eriogonum douglasii var. meridionale John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50662 Lassen Summit ridge of Diamond Mt. 2346 Comment
  JEPS114757  Eriogonum douglasii var. meridionale Lowell Ahart, John Dittes 2008-6-19 14895 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CAS-BOT-BC246500  Eriogonum douglasii var. meridionale Parkison & Party 1916-6-8 8 Lassen Lassen National Forest, Sage type, Harvey Valley 1676 Comment
  RSA0065383  Eriogonum elatum M. P. Harthill 1972-6-16 s.n. Lassen Doyle. 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
  UCR90298  Eriogonum kearneyi G. R. Ballmer 1993-7-1 s.n. Lassen N end of Fort Sage Mtns 1542 Comment
  CDA22616  Eriogonum maculatum T. C. Fuller 1980-8-6 20322 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  UC1533147  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 0.1 mi w along Smoke Creek Road CA-NV stateline 1341 Comment
  UC85967  Eriogonum maculatum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC268688  Eriogonum microthecum var. laxiflorum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50656 Lassen Summit ridge of Diamond Mt. 2346 Comment
  NY281555  Eriogonum microthecum var. laxiflorum E. K. Balls 1952-10-10 18143 Lassen In Northern Juniper Woodland, 8 mi. s.e. of Ravendale, Hwy 395, between Susanville and Alturas. 1280.2 Comment
  UC585235  Eriogonum microthecum var. laxiflorum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1753 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UC85949  Eriogonum microthecum var. laxiflorum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC444002  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mile west of Plinco Mine road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  SD132453  Eriogonum nudum G. Helmkamp 1990-9-23 G 11 Lassen Sagebrush scrub area N of Ravendale. Riparian area beside small creek 1676 Comment
  CAS-BOT-BC266364  Eriogonum nudum var. deductum Louella Bass 1973-6-14 EV 105 Lassen Elysian Valley 1325 Comment
  CHSC105258  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-7-31 16983 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC68900  Eriogonum nudum var. nudum Vernon Oswald; Lowell Ahart 1997-6-24 8595 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). Along the edge of the road. 1685 Comment
  SD13333  Eriogonum nudum var. nudum R. V. Chamberlain 1935-9-8 6584 Lassen Guernsey Creek Comment
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. Comment
  CAS-BOT-BC269826  Eriogonum nudum var. pubiflorum John Thomas Howell 1934-7-8 12498 Lassen Spalding's, Eagle Lake Comment
  CHSC13879  Eriogonum nudum var. pubiflorum J. Grove 1973-7-19 96 Lassen Collected on Big Valley Mountain 5 mi. W of Nubieber. 1310 Comment
  CHSC87119  Eriogonum nudum var. pubiflorum L. P. Janeway 2001-6-20 7204 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC1542948  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1760 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  CAS-BOT-BC269925  Eriogonum nudum var. pubiflorum Barrett Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  UC77673  Eriogonum nudum var. scapigerum T. S. Brandegee 1892-6-27 Lassen Milford Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  RSA780054  Eriogonum pyrolifolium Elizabeth A. Kempton 2007-8-15 510 Lassen Lassen National Forest, Lassen Peak ca. 0.25 mile along trail from trailhead/parking lot. 2678 Comment
  UC412800  Eriogonum spergulinum var. reddingianum Franklin P. Nutting Lassen Pine Creek Comment
  UC6621  Eriogonum spergulinum var. reddingianum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  POM165475  Eriogonum sphaerocephalum Geo. D. Butler 1910-5-20 1371 Lassen Dry rocky hill, Yreka. Comment
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Apr 25 2013
  CHSC86947  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7190 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
  UC1483798  Eriogonum sphaerocephalum var. halimioides Teresa Prendusi 1980-7-14 Lassen along Ash Valley road about 15 mi w Madeline; Ash Valley 1524 Comment
  UC1609360  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald and Lowell Ahart 1993-7-8 5674 Lassen 1.4 mi ssw Pittville Rd. (Lassen 111, 36N01) (e side of Hall's Flat Rd. (33N18), ca. 5.4 air mi nw of Poison Lake) 1694 Comment
  CAS-BOT-BC262736  Eriogonum sphaerocephalum var. sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen In Balls Canyon on U. S. Highway #395 Comment
  CHSC1330  Eriogonum sphaerocephalum var. sphaerocephalum V. Holt 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  SEINET11261384  Eriogonum sphaerocephalum var. sphaerocephalum Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km (11.5 mi) airline distance east-southeast of Ravendale.; 0 1830 Comment
  UC85705  Eriogonum sphaerocephalum var. sphaerocephalum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  NY283383  Eriogonum strictum G. Schoolcraft 1985-6-12 1422 Lassen Near intersection of Horse Lake Road & Highway 139 1487.4 Comment
  RSA0029191  Eriogonum strictum John F. Emmel 1997-6-8 1491 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  CAS-BOT-BC267895  Eriogonum umbellatum A. M. Vollmer; L. Beane 1953-7-1 46 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC267897  Eriogonum umbellatum John Thomas Howell 1973-7-10 49772 Lassen Near Westwood, Sierra Nevada 1554 Comment
  JEPS127724  Eriogonum umbellatum Alejandro Brambila, Michael Dolan 2016-8-2 CA 320 -181 Lassen Head north on unnamed road west of Holbrook Reservoir from Ash Valley Road. Comment
  CAS-BOT-BC267891  Eriogonum umbellatum A. A. Heller 1938-6-23 15190 Lassen In the first valley east of Westwood Comment
  CHSC13632  Eriogonum umbellatum var. modocense M. S. Taylor 1974-7-13 306 Lassen Ca. 150 ft w of Mahogany Lake, ca. 5 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC99123  Eriogonum umbellatum var. modocense Lowell Ahart; John Dittes 2008-6-19 14882 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
  HSC17376  Eriogonum umbellatum var. modocense M. T. Milligan 1964-8-6 202 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA700233  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7203 Lassen High Cascade Range, 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  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-BC265097  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-10 3 -83 Lassen About 3 miles east of Susanville, Center Road near Leavitt Lane, Sierra Nevada Comment
  CHSC106592  Eriogonum umbellatum var. nevadense C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  POM253245  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Grassy, gravelly slope between Secret Valley and Ravendale. 1524 Comment
  UC1143015  Eriogonum umbellatum var. nevadense August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  POM253240  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15202 Lassen Ocasional on on pen gravelly slope denuded of timber west of Susanville. Comment
  POM253241  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15190 Lassen 3 mi. east of Westwood. Comment
  SEINET530706  Eriogonum umbellatum var. polyanthum Paul Opler 2008-7-7 Lassen Crater Lake Rd., 32N08. 1725 Comment
  CHSC117539  Eriogonum vimineum Lowell Ahart; John Dittes 2016-7-13 21132 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS56156  Eriogonum vimineum W. L. Jepson 1918-8-5 7816 Lassen Madelin Plains 1615 Comment
  RSA252387  Eriogonum vimineum Robert F. Thorne, C. W. Tilforth 1969-9-6 39260 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  UC1258486  Eriogonum vimineum G. Schoolcraft 1979-6-19 78 B Lassen Painter's Flat 1719 Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  CAS-BOT-BC262368  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  JEPS56155  Eriogonum vimineum Alma U. Ames 1917-10-9 50 Lassen 25 mi n, on Hat Creek Road Mt. Lassen Comment
  CAS-BOT-BC261798  Eriogonum wrightii var. subscaposum Clare B. Hardham 1969-8-28 17450 Lassen Slope west of Janesville Comment
  JEPS96132  Eriophorum gracile Vernon H. Oswald and Lowell Ahart 1996-6-24 7888 Lassen 2.5 mi. s. Eagle Lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), e. side Papoose Meadows, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  POM111648  Eriophorum gracile Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  HSC28861  Eriophyllum lanatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19174 Lassen Harvey Valley near Cone Springs Comment
  SEINET10672052  Eriophyllum lanatum Paul Gallian, David B. Dunn 1971-6-2 Gallian 517 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
  SEINET4208677  Eriophyllum lanatum var. achilleoides Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9490 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 Comment
  UC1136991  Eriophyllum lanatum var. achilleoides L. R. Short and J. Warren 1936-6-29 S 459 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1822 Comment
  UC725390  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen e slope of Freydonyer Pass (on State Highway #36); State Highway #36, Freydonyer Pass 1645 Comment
  UCR244036  Eriophyllum lanatum var. achilleoides Jim Andre 1993-6-5 19706 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  RSA92671  Eriophyllum lanatum var. achilleoides F. W. Peirson 1926-6-24 6849 Lassen Several miles southward from the Madeline Plain Comment
  JEPS34480  Eriophyllum lanatum var. integrifolium C. S. Robinson 1927-7-1 50 Lassen Bogard Ranger Station Lassen National Forest (sw Lassen County) 1712 Comment
  UC1283706  Eriophyllum lanatum var. integrifolium Beecher Crampton 1964-6-25 7068 Lassen State Hwy 44 25 mi nw Susanville; Lassen National Forest, Bogard Ranger Station 1722 Comment
  UC1368789  Eriophyllum lanatum var. integrifolium John L. Strother 1970-5-23 956 Lassen about 6 mi n Honey Lake 1280 Comment
  NY1101607  Eryngium alismifolium G. Schoolcraft 1984-7-31 1329 Lassen Along Hwy 395 about 1 mile north of Ravendale Fire Station 1615 Comment
  SEINET8673813  Eryngium alismifolium Ornduff 1958-7-22 5014 Lassen along Highway 395, 6.6 miles north of Ravendale Comment
  UC477504  Erysimum capitatum var. capitatum Geo. O. Fisher 1928-6-21 28 Lassen Lassen <National> Forest 1615 Comment
  JEPS118156  Erysimum repandum Dean W. Taylor 2009-5-21 20607 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air mi E of Round Valley Reservoir 1706 Comment
  JEPS79211  Erysimum repandum L. R. Heckard with R. C. Bacigalupi 1980-6-11 5247 Lassen 11.3 mi. n. Litchfield (along U.S. 395 s. of Deep Creek crossing, between R.R. & hwy.) 1463 Comment
  CHSC60857  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1993-6-28 5610 Lassen N of Hwy 44 on Rd. 33N06, on the Sse flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  CHSC66267  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1996-6-24 7866 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC106222  Erythranthe guttata Arthur C. Barrett 1915-6-3 14 Lassen Laufman Ranger Station. 1463 Comment
  CHSC7754  Erythranthe guttata Beverly J. Wise 1968-8-28 108 Lassen Edge of Crazy Harry Creek where crossed by Las. Co. Rd. 230, 6 mi. north of Hwy 36. 1645 Comment
  SEINET14291746  Erythranthe guttata C. G. Gulling 1905-1 1546 Lassen Big Meadows. Comment
  CAS-BOT-BC153610  Erythranthe moniliformis Louella Bass 1973-6-17 124 Lassen Elysian Valley Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  POM252826A  Erythranthe pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mile south of Westwood. 1524 Comment
  POM260456  Erythranthe pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  CHSC60775  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1993-6-14 5523 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  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
  RSA0086578  Euphorbia Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. 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
  CAS-BOT-BC278431  Festuca idahoensis John Thomas Howell 1934-7-6 12448 Lassen Harvey Valley Comment
  CAS-BOT-BC278435  Festuca idahoensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49459 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC278437  Festuca idahoensis John Thomas Howell 1934-7-6 12430 Lassen Hall's Flat Comment
  JEPS127718  Festuca idahoensis Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -173 Lassen South on 395. West on 171. Continue above 6000ft. Comment
  POM203052  Festuca idahoensis J. T. Howell 1934-7-6 12448 Lassen Harvey Valley Comment
  RSA0092308  Festuca idahoensis Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31434 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  RSA715621  Festuca idahoensis L. Ahart, John Dittes 2005-6-1 11880 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1471 Comment
  UC506991  Festuca idahoensis George A. Fischer and Irwin H. Johnson 1933-7-12 F 216 Lassen Lassen Forest 1722 Comment
  UCD65970  Festuca idahoensis R. Tofsrud 1947-7-1 219 Lassen East of Madeline. Comment
  UCD65976  Festuca idahoensis L. Whitney 1933-7-1 Lassen Logan Mt. Comment
  UCD66094  Festuca idahoensis C. R. Quick 1962-6-17 62- 30 Lassen Western Pacific RR, south of Halls Flat. 1706 Comment
  JEPS28299  Festuca rubra George W. Gillett 1957-7-29 947 Lassen between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  JEPS71219  Festuca rubra Brown and Wieslander 1922-7-23 80 Lassen Comment
  UC1024686  Festuca rubra Leo Whitney 1933-8-3 2159 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCD66393  Festuca rubra A. L. Hormay 1941-6-26 27 Lassen Lassen National Forest. Westwood Junction. 1737 Comment
  UC963893  Floerkea proserpinacoides Milo S. Baker 1952-5-23 12421 b Lassen e of Chester (along Highway 36); Highway 36 Comment
  CAS-BOT-BC459438  Fragaria virginiana subsp. platypetala Louella Bass 1973-4-13 15 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CAS-BOT-BC52512  Frangula californica subsp. californica C. L. Hitchcock 1940-5-26 6619 Lassen lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1371 Comment
  CHSC66397  Frangula rubra Vernon H. Oswald; Lowell Ahart 1996-6-17 7779 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Shrub growing in openings on a brushy slope on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  CAS-BOT-BC55731  Frangula rubra subsp. rubra John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49162 Lassen Elysian Valley northwest of Janesville 1325 Comment
  SJSU6086  Frasera albicaulis var. nitida J. W. Tilden 1960-6-27 1509 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  HSC26683  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19251 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC508129  Fritillaria recurva Mrs. A S. Baldwin 1928-5-10 318 Lassen Coyote Flat. Over ridge from Dixie Valley Comment
  RSA367755  Fritillaria recurva J. P. Smith, J. O. Sawyer 1972-5-6 5235 -a Lassen Lassen National Forest; Boundary Campground on State Route 89 south of Burney 1067 Comment
  SEINET3886822  Fritillaria recurva J. P. Smith, J. O. Sawyer 1972-5-6 5235 a Lassen Lassen National Forest; Boundary Campground on State Route 89 south of Burney.; 0 1067 Comment
  UCR67016  Gaillardia pulchella George K. Helmkamp 1990-9-23 G- 15 Lassen north of Ravendale 1677 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  CHSC113000  Galium trifidum subsp. columbianum Lowell Ahart; John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA201323  Galium trifidum var. pusillum J. T. Howell 1959-9-23 34886 Lassen end of Juniper Lake. 2058 Comment
  OBI77063  Garrya fremontii Anthony Baniaga 2011-6-7 310 Lassen Lassen NF.. W of 34N60. Burney Mtn East quad. T34N r3E sec 35 SW of NE 1747 Comment
  CHSC29860  Gayophytum diffusum subsp. parviflorum Robin L. Ondricek 1978-6-26 70 Lassen .5 mi n of jct. with 5.16 on road to ELFS. 1572 Comment
  UC1137737  Gayophytum diffusum subsp. parviflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 247 Lassen Lassen National Forest 1767 Comment
  RSA0004469  Gayophytum helleri var. erosulatum W. L. Jepson 1918-8-2 7754 Lassen Beckwith Pass 1463 Comment
  CHSC27713  Gayophytum heterozygum Robert A. Schlising 1978-7-21 3318 Lassen E side of Eagle L., near Eagle Lake Field Station. 1578 Comment
  POM196436  Gayophytum heterozygum A. H. Kramer s.n. Lassen Prospect Peak Comment
  UC1122617  Gayophytum heterozygum A. Simontacchi 1940-6-24 892 Lassen 0.2 mi nnw Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA517182  Gayophytum humile J. T. Howell, Gordon H. True 1973-8-1 50207 Lassen Sierra Nevada: Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2165 Comment
  SEINET10903379  Gayophytum nuttallii David B. Dunn, Douglas G. LeDoux 1973-5-25 Dunn 871 Lassen Collected 3 mi n of milford. On hwy 395 at honey lake campgrounds. Comment
  CHSC106072  Gayophytum racemosum Lowell Ahart; John Dittes 2010-7-31 17029 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
  JEPS107306  Gayophytum racemosum Lowell Ahart, John Dittes 2005-6-1 11884 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
  POM38132  Gayophytum racemosum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 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
  UCD103467  Geranium oreganum L. R. Short; Wm. Gansberg 1936-6-12 S- 433 Lassen Lassen Forest, MDM, Burgess Spr. Exp. Range. 1807 Comment
  UC1037229  Geranium viscosissimum Leo Whitney 2007 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  RSA122288  Geum canescens L. R. Short, J. Warren 1936-6-23 s.n. Lassen Burgess Spring Exp Range. 1765 Comment
  CAS-BOT-BC459363  Geum macrophyllum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49425 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC143570  Geum triflorum A. G. Brenneis 1928-7-3 B 14 Lassen Lassen National Forest, Jesson Valley 1463 Comment
  CHSC66259  Geum triflorum Vernon H. Oswald; Lowell Ahart 1996-6-24 7887 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 the slopes bordering the E side of the meadow N of the springs. 1633 Comment
  SBBG70512  Geum triflorum var. ciliatum E. Rockwell -Jun-1925 934 Lassen Eagle Lake 1554 Comment
  JEPS87404  Gilia capillaris Vernon H. Oswald and Lowell Ahart 1993-6-28 5616 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  SEINET200250  Gilia capillaris Herbert L. Mason 1955-7-31 14643 Lassen Near Westwood Junction (railroad station 15mi west of Susanville) 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
  SEINET14643952  Gilia inconspicua P. B. Kennedy 1901-6-10 s.n. Lassen Constantia, railroad station. Comment
  SEINET14644567  Gilia inconspicua P. B. Kennedy 1901-6-10 s.n. Lassen Constantia, railroad station. Comment
  RSA104235  Gilia malior Verne Grant, Alva Grant 1956-5-17 9798 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 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
  RSA95713  Gilia modocensis Verne Grant 1955-6-8 9668 Lassen 3.6 mi n of Halleluja Jct. on hwy 395. 1311 Comment
Read comments
May 2 2012
  CHSC25915  Gilia sinuata K. R. Stern 1967-7-1 2437 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  JEPS69702  Gilia sinuata J. W. Blankinship 1911-11-29 Lassen Red Rock Comment
  POM74852  Gilia sinuata Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC181062  Glossopetalon spinescens G. Schoolcraft 1989-5-31 1887 Lassen Skedaddle Creek area n. of Wendel Hwy. 1402 Comment
  CAS-BOT-BC280600  Glyceria elata John Thomas Howell 1976-7-19 51984 Lassen Gold Run Creek southwest of Susanville 1386 Comment
  CAS-BOT-BC302593  Gnaphalium palustre John Thomas Howell 1973-6-28 s.n. Lassen Elysian Valley 1325 Comment
  CDA23422  Grayia spinosa G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2799 Lassen Secret Creek drainage, west side of Highway 395 at the foot of basaltic Saddle Rock, 15 miles (24.1 km) south of Ravendale. 0 Comment
  CHSC7711  Grayia spinosa Beverley J. Wise 1969-5-18 7 Lassen 13.4 mi. east of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  HSC27351  Grayia spinosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19302 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  UC1537382  Grayia spinosa Gordon H. True Jr. 1936-6-26 551 Lassen flats s.e. Standish; Honey Lake Valley 1219 Comment
  UCD55266  Grayia spinosa Ellen Dean 2006-5-15 3064 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  JEPS124631 Image available Grindelia nana Virginia Hardham 1965-7-13 132 Lassen Along roadside 1.4 mi past junction of As and 299. Comment
  SEINET8770843 Image available Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Turnoff to Janesville along Hwy 395 Comment
  CDA3425  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen North of the cemetery, Janesville. 0 Comment
  UCD98138  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CAS-BOT-BC388467  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  SEINET10837176  Hackelia bella Katherine L. Morris 1973-5-25 Morris 245 Lassen Collected 13.7 mi NW of the junction of Hwy 36 & 44 on Hwy 44, in an area of yellow pine, fir and Ribes. Comment
  UC773869  Hackelia californica L. R. Short, J. Warren 1936-6-26 S 458 Lassen Burgess Spring Experiment Range; Lassen National Forest 1853 Comment
  CAS-BOT-BC231154  Hackelia cusickii G. Schoolcraft 1988-7-7 1810 Lassen About 14 air miles NE of Ravendale 1798 Comment
  CDA3145  Halogeton glomeratus J. T. Howell, T. H. Kearney 1951-8-2 28229 Lassen Honey Lake Valley near Herlong. 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
  POM359823  Helianthella californica var. nevadensis L. S. Rose 1933-7-2 33268 Lassen Westwood. 1524 Comment
  UCR57493  Helianthus annuus R. D. Goeden, Don W. Ricker 1989-8-22 890822- 9 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  CAS-BOT-BC305409  Helianthus annuus John Thomas Howell; G. H. True 1973-7-31 50143 Lassen Janesville 1295 Comment
  CDA18385  Helianthus bolanderi G. D. Barbe 1978-8-31 2424 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  HSC5797  Helianthus nuttallii M. T. Milligan 1964-7-16 134 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  RSA0012972  Helianthus nuttallii subsp. nuttallii H. L. Mason 1947-8-11 13492 Lassen Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  UC1191654  Heliotropium curassavicum Verne Grant and Irving Schneider 1947-9-5 8373 Lassen n.w. shore Eagle Lake (by Sam Webb's place (Spaulding)) Comment
  JEPS107809  Hemizonella minima Lowell Ahart, John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  SJSU8133  Hemizonella minima J. W. Tilden 1960-6-27 1500 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  RSA0128926  Hesperochiron californicus Christopher Davidson 1975-6-6 2719 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  CHSC5258  Hesperochiron pumilus J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek near Eagle Lake. 1584 Comment
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  JEPS19755  Hesperolinon micranthum Rimo Bacigalupi with S. Galen Smith 1957-6-28 5995 Lassen just e U. S. Highway No. 395 (7.0 mi n of Madeline (about a mi n of Sage Hen siding on Southern Pacific RR line)) Comment
  NY1002355  Hesperolinon micranthum J. T. Howell 1934-6-10 11887 Lassen 12 miles north of Susanville, on road to Horse Lake Comment
  UC1130239  Hesperolinon micranthum A. Simontacchi 1940-6-30 902 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 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
  UC1601275  Hesperolinon micranthum Leo Whitney 1934-7-8 1793 Lassen open flat near Harvey Valley Spring (ca 14 mi w of Eagle Lake); Lassen National Forest Comment
  RSA127454  Hesperolinon micranthum Peter H. Raven, Otto T. Solbrig 1958-6-17 13300 Lassen 8.0 miles north of Madeline along Unites States Highway 395. Comment
  SJSU7861  Hesperolinon micranthum V. Hardham 1965-7-12 127 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou County) on State Rt 139 1463 Comment
  UC1609506  Hesperostipa comata Vernon H. Oswald and Lowell Ahart 1993-6-14 5542 Lassen n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  UC60155  Hesperostipa comata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CHSC23522  Hesperostipa comata subsp. intermedia Wayne O. Baum 1971-7-12 71 -67 Lassen E. slope of Gallatin Peak. 1950 Comment
  JEPS96087  Heterocodon rariflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7859 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd, w side Papoose Meadows, ca 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  POM68265  Heterocodon rariflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC310910  Heterotheca villosa Margaret Williams 1974-7-27 74- 61 -61 Lassen West of Hwy 395 and south of Hwy 70. Near Hallelujah Junction 1493 Comment
  SEINET7106129  Heterotheca villosa var. minor Richard R. Halse 2010-8-26 8091 Lassen Along State Hwy. 70 at Beckwourth Pass ca 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles E of Sierra Valley.; 0 1584 Comment
  NY783473  Heuchera rubescens B. J. Ertter 1987-6-16 7201 Lassen Skeedaddle Mountains on northeast side of Honey Lake; between Hot Springs Peak and VABM 2255.5 Comment
  CAS-BOT-BC425259  Heuchera rubescens P. Monnet 1913-7-4 830 Lassen S.E. de Lassen County Hot Springs Peak 1828 Comment
  RSA0063206  Heuchera rubescens var. alpicola Barbara Ertter, Gary Schoolcraft 1987-6-16 7201 Lassen Skeedaddle Mtns on NE side of Honey Lake. Between Hot Springs Peak and VABM. 2256 Comment
  CAS-BOT-BC312419  Hieracium albiflorum John Thomas Howell; Gordon H. True 1973-7-31 50025 Lassen Road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  HSC68934  Hieracium albiflorum Gary Schoolcraft 1980-7-29 345 Lassen On Big Valley Mtn. Timber sale area W of Bieber 1768 Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  CAS-BOT-BC318716  Hieracium horridum Alice Eastwood 1912-9-1 2056 Lassen Mount Shasta Comment
  SEINET11262512  Hieracium nudicaule Robert L. Johnson, Mikel R. Stevens 2015-7-10 3938 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1564 Comment
  HSC63966  Holodiscus microphyllus var. glabrescens Teresa Prendusi 1980-7-10 Lassen N face of Little Fredonyer Peak, above Horse Lake 1768 Comment
  UC1024802  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1935-6-23 3291 Lassen Camp 10 Fruit Grower's Supply Company Lassen National Forest Comment
  UC1100324  Hordeum brachyantherum subsp. brachyantherum Malcolm A. Nobs, S. Galen Smith 1949-7-21 1055 Lassen 4 mi N of Madelaine Comment
  CAS-BOT-BC284715  Hordeum jubatum John Thomas Howell 1976-7-20 52034 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  UC1137163  Hordeum jubatum August L. Hormay 1932-8-12 Lassen e edge Eagle Lake; Lassen National Forest, e edge Eagle Lake Comment
  UCD85742  Hordeum jubatum Gerald Dickinson 1963-7-15 99 Lassen Ravenville. US Hwy 395. 1618 Comment
  UC188782  Hordeum marinum subsp. gussoneanum Milo S. Baker Lassen n side Dixie Mountains; n side Dixie Mountains Comment
  CAS-BOT-BC157366  Horkelia fusca John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49441 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC143981  Horkelia fusca var. tenella Lassen 1927 G. S. Crew 1927-6-25 37 Lassen Norval Flat, Lassen National Forest 1747 Comment
  CAS-BOT-BC143985  Horkelia fusca var. tenella Clarence R. Quick 1962-6-17 62 -19 Lassen N. of DeLasmutt Ranch on Hwy. 44 along dirt road to Blacks Mountain E. F. Hdqrts. 1615 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
  CHSC66386  Hosackia crassifolia var. crassifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7778 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Growing on a brushy slope on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  UC1069096  Hydrophyllum capitatum var. alpinum A. Simontacchi 1940-5-10 692 Lassen 4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad. 1752 Comment
  SEINET10472162  Hypericum formosum subsp. scouleri Mary Susan Taylor 1974-1 Taylor 283 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC420712  Hypericum formosum var. scouleri Franklin P. Nutting 1894-7-25 Lassen Willow Creek northern CA Comment
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Jul 3 2013
  CAS-BOT-BC206818  Iliamna bakeri Richard R. Halse 2004-7-8 6615 Lassen Along State Hwy. 139, ca. 6 miles N of Eagle Lake. 1710 Comment
  NY52522  Iliamna bakeri G. Schoolcraft 1984-8-27 1371 Lassen Eastern slopes of Little Hat Mtn. 1981.2 Comment
  UC879819  Ipomopsis aggregata C. L. Hitchcock 1940-5-26 6601 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River Comment
  CHSC68754  Ipomopsis congesta subsp. congesta Vernon H. Oswald; Lowell Ahart 1997-5-27 8493 Lassen West side of Hwy. 139 south of Willow Creek Guard Station, 0.9 mi south of Forest Road 38N04 to Coyote Flat. Along the road. 1577 Comment
  CHSC75515  Ipomopsis congesta subsp. congesta Vernon H. Oswald; Lowell Ahart 1999-6-9 9745 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  CHSC68895  Ipomopsis congesta subsp. montana Vernon Oswald; Lowell Ahart 1997-6-24 8637 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS121786  Iris missouriensis B. Castro and L. P. Janeway 2012-7-2 1936 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from Skedaddle Ranch. Comment
  CHSC59160  Isoetes bolanderi Vernon H. Oswald; Lowell Ahart 1992-9-15 5215 Lassen Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. Lassen Volcanic National Park. 2164 Comment
  UCD135760  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake campground, Lassen Park. 2057 Comment
  CHSC59161  Isoetes howellii Vernon H. Oswald; Lowell Ahart 1992-9-15 5215 Lassen Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. 2164 Comment
  CHSC63380  Iva axillaris subsp. robustior Vernon H. Oswald 1994-7-8 6367 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. On levee roads and along this section of Hwy. 139. 1490 Comment
  CHSC35570  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  NY436061  Ivesia paniculata T. W. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 miles E of Adin. 1554.5 Comment
  SEINET10891010 Image available Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 Nelson 5984 Lassen T38N, R11W, S. 31 & 32. Ash Valley along Adin-Madeline Rd. 16 miles east of Adin. Sagebrush steppe. 1554 Comment
  JEPS28680  Juncus balticus George W. Gillett 1957-7-26 907 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  UC1542936  Juncus balticus G. Schoolcraft 1987-5-18 1701 Lassen 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC2490  Juncus balticus J. Burtt Davy Jun 17 1897-Jun 24 1897 3280 Lassen Tule Confederacy Honey Lake Valley Comment
  UCR244138  Juncus balticus Jim Andre, G. L. Clifton 1993-6-9 19700 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
  CHSC112771  Juncus balticus subsp. ater Lowell Ahart; John Dittes 2013-7-23 18903 Lassen 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
  CHSC59101  Juncus bufonius var. bufonius Vernon H. Oswald; Lowell Ahart 1992-8-25 5187 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  UC1601859  Juncus ensifolius Baker and Nutting 1894-7-24 Lassen Eagle Lake Comment
  UC1608994  Juncus hemiendytus var. hemiendytus Vernon H. Oswald and Lowell Ahart 1993-6-3 5483 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y), 2.4 mi n of its jct with Lassen 21 (32N02) to Eagle Lake (on w edge of Pine Creek Valley, between Poison Lake and Susanville); Pine Creek Valley 1728 Comment
  RSA201304  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  SD71006  Juncus howellii John Thomas Howell 1959-9-23 34880 Lassen North end of Juniper Lake. 2057 Comment
  CAS-BOT-BC312669  Juncus luciensis John Thomas Howell; Louella Bass 1974-7-10 50538 Lassen Elysian Valley 1325 Comment
  UC2488  Juncus mexicanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3284 Lassen Tule Confederacy Honey Lake Valley Comment
  UC2489  Juncus mexicanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3278 Lassen Tule Confederacy Honey Lake Valley Comment
  CDA33205  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  JEPS87450  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
  UC1601786  Juncus nevadensis Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
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Jul 3 2013
  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
  UC1133742  Juncus tenuis Robert W. Gardner 1939-6-28 G- 33 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1706 Comment
  CHSC66417  Juncus trilocularis Vernon H. Oswald; Lowell Ahart 1996-6-17 7805 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  CHSC117179  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CAS-BOT-BC81148  Juniperus occidentalis Doris Kildale Gillespie 1930-5-12 9322 Lassen 2 miles north of Susanville on road to Alturas Comment
  UC572307  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ne Chats; Sierraville quadrangle 1569 Comment
  UCR148432  Juniperus occidentalis David A. Charlet 1994-7-6 1923 Lassen Great Basin, Susanville, corner of Main and Fair Streets 1271 Comment
  UCR164307  Juniperus occidentalis Maile Neel 2000-4-29 G- 01 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
  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
  UCSB233  Juniperus occidentalis Haller, John 1959-08 Lassen 2 miles north of Susanville on road to Eagle Lake and Adin 1371 Comment
  UCR162426  Juniperus occidentalis subsp. australis David A. Charlet 1991-8-7 909 Lassen East shore of Eagle Lake 1616 Comment
  RSA647569  Juniperus occidentalis var. occidentalis Marion P. Harthill 1972-6-17 812 Lassen Ravendale 1768 Comment
  SEINET10719654  Juniperus occidentalis var. occidentalis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 132 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  UC1924194  Juniperus occidentalis var. occidentalis Debra Valov 2005-8-20 2005236 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCR4289  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-8-31 650831- 05 Lassen c. 45 mi north of Susanville 1662 Comment
  SD139404  Juniperus osteosperma F. C. Vasek 1964-9-12 day 6 Lassen U. S. 395, 5.2 miles north of its junction with State Highway 70 (U. S.40) 1480 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  SEINET11066903  Juniperus osteosperma G. Schoolcraft 1998-4-27 2705 Lassen N end of Fort Sage Mountains, W slope. 1951 Comment
  CHSC23744  Kelloggia galioides M. S. Taylor 1974-7-10 273 Lassen Scattered on W side of Gallatin Beach Rd, ca. 3 mi S of Gallatin Beach on Eagle Lake, ca 12 mi NW of Susanville. 1524 Comment
  JEPS97366  Kelloggia galioides Vernon H. Oswald and L. Ahart 1995-7-24 7133 Lassen T31N R7E ca. center of N side of Sec. 23, 6400 ft, High Cascade Range, Red Fir Forest. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  POM68596  Kelloggia galioides Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC303069  Kelloggia galioides Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC60869  Koeleria macrantha Vernon H. Oswald; Lowell Ahart 1993-6-28 5586 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. In meadow. 1731 Comment
  CHSC71383  Lactuca tatarica subsp. pulchella Vernon H. Oswald; B. Corbin, G. Schoolcraft 1998-7-13 9256 Lassen Hwy. 139 along the east shore of Eagle Lake. Roadside. 1560 Comment
  CAS-BOT-BC341484  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CHSC7633  Lagophylla ramosissima Beverley J. Wise 1969-5-3 24 Lassen 4.5 mi. east of Hwy 395 on Las. Co. Rd. 338. 1554 Comment
  UCR67436  Lagophylla ramosissima George K. Helmkamp 1990-9-23 A- 10 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CHSC66374  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1996-6-17 7782 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Along the trail at the 7 mile post on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  JEPS114639  Lamium amplexicaule Lowell Ahart, John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CDA20356  Lappula redowskii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  JEPS67993  Lappula redowskii W. L. Jepson 1918-8-2 7765 Lassen Beckwith Pass 1463 Comment
  POM29621  Lathyrus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  CHSC64757  Layia glandulosa Vernon H. Oswald 1995-5-31 6817 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  OBI76935  Layia glandulosa Anthony Baniaga 2011-6-11 332 Lassen Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21 1623 Comment
  UCSB30244  Layia glandulosa Hardham, Clare 1961-6-16 Lassen Gold Run Creek, south of Susanville Comment
  CAS-BOT-BC321491  Layia glandulosa Milo S. Baker 1936-6-16 8360 Lassen About 30 mi N of Susanville along Hwy 395. Comment
  CAS-BOT-BC321495  Layia glandulosa M. S. Taylor 1982-5-29 4571 Lassen 500 yds NE of the jct of Hwy 70 with Hwy 395 at Hallelulia Jct, ca 23 mi N of Reno. 1524 Comment
  CAS-BOT-BC321497  Layia glandulosa Margaret Williams 1974-7-27 74- 2 -51 Lassen Burned area near Hallelujah Junction, W of Hwy 395 and S of Hwy 70 1493 Comment
  SEINET11447818 Image available Layia glandulosa M. S. Baker 1905-1 s.n. Lassen Dixey Valley Comment
  SEINET11807266  Layia glandulosa N. H. Holmgren, Holmgren, P. K. 1980-1 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  HSC95315  Lemna minuta Gordon Leppig, Tony LaBanca 1997-6-29 526 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC88695  Lepidium acutidens M. S. Baker; Frank Nutting 1894-1-1 s.n. Lassen Dixey Valley. Comment
  CAS-BOT-BC89168  Lepidium draba Louella Bass 1977-6-12 77 -4 Lassen Elysian Valley. Comment
  NY628139  Lepidium latifolium M. D. Windham 2001-6-22 2475 Lassen Northwest of Wendel in Honey Lake Valley near base of Skedaddle Mountains ca. 10.77 km WSW of the summit (7654) of Hot Springs Peak. 1231.4 Comment
  NY76542  Lepidium latifolium G. Schoolcraft 1984-7-31 1330 Lassen Along Highway 395 about 1 mile north of Ravendale Fire Station 1615.4 Comment
  CAS-BOT-BC12813  Lepidium perfoliatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49209 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC117182  Lepidium perfoliatum Lowell Ahart; John Dittes 2016-6-7 21017 Lassen On the east edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) southwest of Bieber. 1397 Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. Comment
  CHSC5238  Lepidium perfoliatum L. Martin 1953-6-30 Lassen Eagle Lake. E side of Honey Lake near Doyle. 1299 Comment
  JEPS17738  Lepidium perfoliatum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5420 Lassen 6.8 mi e Smoke Creek Ranch Rd. jct with U.S. Hwy 395 (along Smoke Creek Ranch Rd, center of Bull Flat); Bull Flat 1402 Comment
  CAS-BOT-BC12987  Lepidium virginicum John Thomas Howell 1974-7-10 50531 Lassen Sierra Nevada. Elysian Valley. 1325 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
  CHSC68896  Leptosiphon ciliatus Vernon Oswald; Lowell Ahart 1997-6-24 8605 .1 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
  CHSC91188  Leptosiphon ciliatus Lowell Ahart; John Dittes 2005-6-2 11936 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  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
  RSA702599  Leptosiphon harknessii L. P. Janeway 2004-7-26 8147 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
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC444185  Lewisia nevadensis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13.5 miles west of Susanville. Comment
  CAS-BOT-BC283773  Leymus cinereus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16336 Lassen 13.5 miles E of Susanville Comment
  JEPS103214  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mile N of Sagehen Summit on W side of Hwy 395 1706 Comment
  JEPS128173  Leymus cinereus M. C. Mahoney, J. A. Nash 2017-8-22 CA 350 -88 Lassen South of Pilgrim Lake of Buckhorn Byway. From Susanville take Highway 395 north to Buckhorn Byway and follow the road east past Buckhorn Reservoir and Dry Lake. Then take a right onto an unnamed road that is right on the CA/NV border. Continue for 1/2 mile. Population is on either side of the road. Comment
  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
  UC70685  Leymus cinereus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UCD32674  Leymus cinereus Beecher Crampton 1954-7-6 2078 Lassen Lassen County, 3 miles south of Ravendale. Comment
  UC1542930  Leymus triticoides G. Schoolcraft 1987-6-3 1719 Lassen Painter Flat; w side 1706 Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  CAS-BOT-BC274464  Leymus triticoides G. Schoolcraft 1999-6-28 2843 Lassen Flats se. of Herlong 1219 Comment
  POM109716  Lilium pardalinum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  JEPS120860  Limosella aquatica Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18755 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA772871  Limosella aquatica Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47205 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC52823  Linanthus bolanderi M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. Comment
  JEPS107873  Linanthus ciliatus Lowell Ahart, John Dittes 2005-6-2 11936 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  UC1184062  Linanthus ciliatus Jean Langenheim 1957-6-26 4400 Lassen nw Said Valley, from areas adjacent ot 1937 chaparral quadrat, e part of Lassen County Said Valley Comment
  UC1536989  Linum lewisii Gordon H. True 1936-6-25 538 Lassen e of Harvey Ranger Station (Harvey Valley); Harvey Valley 1798 Comment
  CHSC36496  Linum lewisii var. lewisii Theresa Costa 1982-6-3 30 Lassen Ca. .8 mi s jct forest service rds 5.I6 and 5.I7, ca. 5 yd w 5.I6, heading towards 50corners. Comment
  CHSC4888  Linum lewisii var. lewisii Bill Wilson 1967-7-1 7 Lassen Collected on Rd. #5.00, 2.5 mi. S of Eagle Lake Biological Station. 8 mi. N of Susanville. 1645 Comment
  UC1924249  Linum lewisii var. lewisii Debra Valov 2004-6-3 2004237 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  CAS-BOT-BC111965  Lipocarpha micrantha John Thomas Howell 1974-7-10 50524 Lassen Elysian Valley 1325 Comment
  CHSC13605  Lithophragma Lynn R Thomas 1969-4-17 96 Lassen Ca. 200 yds. up hillside e of Rice Canyon Rd., 5 mi n of junction with 'back road to Litchfield'. Ca 12 mi e of Susanville. 1310 Comment
  CAS-BOT-BC435429  Lithophragma glabrum Louella Bass 1974-4-16 EV 149 Lassen Elysian Valley; Sierra Nevada 1325 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
  CHSC68765  Lithophragma glabrum Vernon Oswald 1997-5-27 8524 Lassen North of Susanville on Frest Route 38N04 0.4 mi south of Coyote Flat, 4.3 mi northeast of Hwy. 139. 1798 Comment
  UC1258492  Lithophragma glabrum G. Schoolcraft 1980-4-8 201 Lassen along Shaffer Mountain Peak road just w Hwy. 395; Shaffer Mountain Peak road 1402 Comment
  UC773886  Lithophragma glabrum L. R. Short 1936-4-28 S- 336 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  SEINET6032241  Lithophragma glabrum J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin Comment
  CAS-BOT-BC428423  Lithophragma tenellum John Thomas Howell 1934-6-14 12129 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC68766  Lithophragma tenellum Vernon H. Oswald 1997-5-27 8503 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  CHSC71099  Lithophragma tenellum Vernon H. Oswald; Lowell Ahart 1998-5-22 9127 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS107869  Lithospermum ruderale Lowell Ahart, John Dittes 2005-6-2 11932 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  SEINET208827  Loasaceae Jack Major 1966-6-24 Lassen Above Blue Lake, Warner Mountaind, northeastern Lassen County (ca. 18 miles airline southeast of Likely), California. 1905 Comment
  CHSC42594  Lomatium bicolor var. leptocarpum Vernon Oswald 1986-5-28 2065 Lassen Hwy 139 between Eagle Lake and Adin, 49.0 mi n of Susanville. 1630 Comment
  POM78757  Lomatium dissectum var. multifidum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA452590  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1776682  Lomatium hendersonii G. Schoolcraft 1996-3-28 2516 Lassen Sage Hen summit near Lassen/Modoc county line 1463 Comment
  SEINET183892  Lomatium leptocarpum L. Contance 1938-6-11 2327 Lassen 5 miles southwest of Susanville 1372 Comment
  CHSC67146  Lomatium macrocarpum James D. Jokerst 1991-5-29 3308 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  SEINET7063559  Lomatium macrocarpum A. G. Vestal 1947-4-5 s.n. Lassen Hidden Valley south of Route 139. UTM Zone 11, 702975mE, 4478192mN. (WGS84/NAD83). 1295 Comment
  POM78183  Lomatium nevadense Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  CHSC66230  Lomatium nevadense var. nevadense Vernon H. Oswald; Lowell Ahart 1996-6-24 7862 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  CHSC99119  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2008-6-19 14899 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
  JEPS118212  Lomatium nevadense var. nevadense Dean W. Taylor 2004-5-14 19069 Lassen Ash Valley, County Road 527 (Forest Road 39N08) ca. 0.5 miles South of crossing of Ash Creek 1539 Comment
  CHSC42626  Lomatium nudicaule Vernon Oswald 1986-5-28 2047 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  RSA125874  Lomatium nudicaule P. H. Raven, Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  CHSC7746  Lomatium piperi Beverly J. Wise 1969-3-29 115 Lassen Along Hwy 139 2 mi north of Susanville. 1341 Comment
  JEPS28836 Image available Lomatium ravenii Lincoln Constance and Emil DiFulvio 1962-4-16 3747 Lassen 1 mi. s. Ravendale 1615 Comment
  OBI48161  Lomatium ravenii Rhonda Riggins 1989-4-27 1641 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale. 1311 Comment
  OBI81733  Lomatium ravenii Tracey Call, Viola Call 1961-5-30 2048 Lassen about 2 miles south of Ravendale Comment
  OBI48163  Lomatium triternatum Rhonda Riggins 1989-4-27 1648 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  OBI81753  Lomatium triternatum Tracey Call, Viola Call 1961-5-30 2051 Lassen 2 miles north of Madeline Comment
  SEINET11131322  Lomatium triternatum var. triternatum M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 86201 Lassen Smoke Creek Rd., E of HWY 395 1433 Comment
  OBI81598  Lomatium vaginatum Tracy Call, Viola Call 1961-5-30 2047 Lassen About 2 miles south of Ravendale 1463 Comment
  RSA18256  Lonicera conjugialis C. B. Wolf 1929-9-1 3786 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  CAS-BOT-BC200923  Lotus John Thomas Howell 1976-7-19 51953 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CHSC25907  Lotus K. R. Stern 1967-7-1 2464 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC60829  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5608 Lassen N of Hwy 44 of Harvey Rd. One (34N27) 1.5 mi NE of Aspen Well, N of Harvey Valley, NE of Poison Lake. 1761 Comment
  CHSC7677  Lotus corniculatus Beverley J. Wise 1969-5-23 59 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  JEPS114702  Lotus denticulatus Lowell Ahart, John Dittes 2008-6-20 14970 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC726744  Lotus denticulatus A. A. Heller 1941-6-24 16191 Lassen 1 mi e Sieber (along US Hwy 299) Comment
  UC15724  Lotus oblongifolius var. oblongifolius M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  JEPS55772  Lotus purshianus var. purshianus Brown and Wieslander 1922-8-19 89 Lassen Martin Springs Eagle Lake Comment
  UC1129240  Lotus purshianus var. purshianus A. Simontacchi 1940-6-30 903 Lassen 2.6 mi w Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  UC1544785  Lotus purshianus var. purshianus Almut G. Jones 1984-8-11 6876 Lassen near Doyle (along Road 395) 1350 Comment
  CHSC117281  Ludwigia palustris Lowell Ahart; John Dittes 2016-7-15 21220 Lassen About 50 yards west of the road and about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  NY748272  Lupinus W. W. Eggleston 1910-9-3 6298 Lassen Vicinity of Doyle Station 1240 Comment
  RSA624904  Lupinus Jeffrey Huber 1971-6-2 110 Lassen 4 mi. S of Adin along Calif. Hwy. 139. Comment
  CHSC23548  Lupinus arbustus Wayne O. Baum 1971-7-6 71 -45 Lassen E. slope of Gallatin Peak. 1950 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  JEPS28489  Lupinus arbustus George W. Gillett 1957-7-29 956 Lassen near the Butte Lake Trail (above Snag Lake); , near the Butte Lake Trail 1859 Comment
  UCD35731  Lupinus arbustus Beecher Crampton 1960-6-18 5724 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  CHSC106689  Lupinus argenteus B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UC1542916  Lupinus argenteus G. Schoolcraft 1987-9-1 1773 Lassen Ash Valley RNA 1554 Comment
  UCR119030  Lupinus argenteus subsp. argenteus Beecher Crampton 1954-7-6 2079 Lassen Modoc Plateau, Madeline. 1524 Comment
  CAS-BOT-BC196338  Lupinus argenteus var. argenteus H. D. Ripley; R. C. Barneby 1944-5-30 5975 Lassen Ravendale 1676 Comment
  CAS-BOT-BC208731  Lupinus argenteus var. heteranthus M. S. Taylor 1982-6-12 4653 Lassen Doyle, ca. 0.5 mi E of Hwy 395 Comment
  CAS-BOT-BC208735  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 215 Lassen Sheepshead, Lassen Forest 1500 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-BC208743  Lupinus argenteus var. heteranthus Roxana S. Ferris; Rena Duthie 1919-6-13 18 Lassen Madaline Comment
  CAS-BOT-BC208758  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of doyle, along Hwy 395 Comment
  CAS-BOT-BC208761  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47443 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208765  Lupinus argenteus var. heteranthus Margaret Williams; Steven Williams 1974-7-26 74 -L-13 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 - Sierra Nevada 1493 Comment
  CAS-BOT-BC208767  Lupinus argenteus var. heteranthus Elmer I. Applegate 1923-9-30 4032 Lassen Sagebrush plains south of Money Lake, Doyle Comment
  CHSC71084  Lupinus argenteus var. heteranthus Vernon H. Oswald; Lowell Ahart 1998-5-22 9094 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  CHSC909  Lupinus argenteus var. heteranthus L. Harman 1946-6-22 Lassen Webb's camp, Eagle Lake. 1554 Comment
  JEPS114624  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2008-6-19 14873 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  NY736922  Lupinus argenteus var. heteranthus N. H. Holmgren 1978-6-11 8925 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance 1800 Comment
  NY736926  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Along U.S. Highway #395 just outside of Johnstonville. Upper Sonoran Life Zone Comment
  SBBG30558  Lupinus argenteus var. heteranthus D. Myrick 1968-6-19 1960 Lassen Hwy 395, 23 mi S of Alturas 1524 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
  UC127527  Lupinus argenteus var. heteranthus J. Burtt Davy Jun 17-24, 1897 Lassen Honey Lake Valley Comment
  UC1537121  Lupinus argenteus var. heteranthus Gordon H. True Jr. 1936-6-27 556 Lassen near top Hot Spring Mountain; near top of Hot Spring Mountain 1828 Comment
  SEINET2063029 Image available Lupinus aridus subsp. aridus Arnold Tiehm, Jan Nachlinger, Gary Schoolcraft 1984-6-25 8823 Lassen Rodeo Flat, 2.7 miles W of the state line on Buckhorn Road from Ravendale to Hwy 81. Comment
  HSC28310  Lupinus brevicaulis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19280 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  JEPS79210  Lupinus brevicaulis L. R. Heckard with R. C. Bacigalupi 1980-6-11 5246 Lassen along US 395, 11.3 mi n Litchfield (s of Deep Creek crossing); , n of Litchfield 1463 Comment
  SEINET10969898  Lupinus brevicaulis David B. Dunn 1956-7-3 Dunn 11916 Lassen Coll. On a dry rocky slope with only an occasional juniper, considerable Artemisia tridentata. N side of the alkali flats, 31 mi. Ne of johnstonville On hwy 395. Comment
  NY746960  Lupinus breweri H. D. D. Ripley 1943-6-13 5709 Lassen 10 miles south of Milford 1768 Comment
  RSA687493  Lupinus caudatus M. Bourell 1997-5-31 5879 Lassen Wendel Road 10.9 miles southeast of Highway 395. Comment
  RSA616275  Lupinus caudatus David B. Dunn, Jeffrey Huber 1971-6-2 17748 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, junction of US 395 and California 70. Comment
  RSA91348  Lupinus caudatus F. W. Peirson 1926-6-24 6852 Lassen Madeline Plain. Comment
  SEINET10488723  Lupinus lepidus Williams 1983-7-31 Williams 126 Lassen Roadside near janesville. Sandy soil with sagebrush and bitterbrush. Great Abundance 1280 Comment
  UC1129510  Lupinus lepidus var. confertus H. S. Yates 1936-8-11 6071 Lassen Baxter Creek; Susanville Quadrangle, Baxter Creek Comment
  CHSC99124  Lupinus lepidus var. sellulus Lowell Ahart; John Dittes 2008-6-19 14886 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC5287  Lupinus leucophyllus 1944-7-2 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  UC1129770  Lupinus leucophyllus A. Simontacchi 1940-6-30 908 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC112399  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18781 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC99103  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  SEINET10486166  Lupinus polycarpus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17754 Lassen Approx 12 mi s of adin on state hwy. 139, In basalt and clay; along edge of Road on rolling knoll, in artemisia-juniper association. 1372 Comment
  SEINET10871082  Lupinus polycarpus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2576 Lassen 6 mi. S of Adin; along California Hwy. 139 right-of-way. 1372 Comment
  UC1523758  Lupinus saxosus Gary Schoolcraft 1983-6-7 968 Lassen near Ash Valley 1706 Comment
  SEINET10488913  Lupinus sellulus Katherine L. Morris 1973-5-25 Morris 220 Lassen Collected at 3.5 mi w of susanville, on u.s. 36, In an area of yellow pine and Purshia. Comment
  SEINET10488918  Lupinus sellulus Katherine L. Morris 1973-5-25 Morris 215 Lassen Collected 2.6 mi w of susanville, on u.s. 36, In an area of pinus jeffreyi and Purshia. Intermediate to l. Confertus (?). 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
  POM110680  Luzula comosa Marcus E. Jones 1897-7-2 s.n. Lassen Near Prattville at Clear Creek. 1524 Comment
  CHSC65313  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the edges of the lake and on floating bogs. 1859 Comment
  JEPS97326  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  CHSC113060  Lythrum hyssopifolia Lowell Ahart; John Dittes 2013-7-23 18896 Lassen Along the south margin of the levee road, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS107819  Lythrum hyssopifolia Lowell Ahart, John Dittes 2005-6-2 11969 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  RSA252467  Machaeranthera canescens var. canescens R. F. Thorne, C. W. Tilforth 1969-9-6 39268 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  SEINET3155222  Machaerocarpus californicus M. E. Jones 1897-6-24 sn Lassen 10 to 15 miles west from Amedee 1219 Comment
  CAS-BOT-BC342656  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  CHSC23515  Madia elegans Wayne O. Baum 1971-7-5 71 -16 Lassen S. slope of Gallatin Peak. 2011 Comment
  JEPS40375  Madia elegans W. L. Jepson 1939-8-11 19373 Lassen Milford 1280 Comment
  SBBG95823  Madia elegans G. K. Helmkamp 1990-10-4 M- 9 Lassen S of Susanville, N of Milford Pass, Plumas Nat Forest 1463 Comment
  UC1191847  Madia elegans Malcolm A. Nobs and S. Galen Smith 1949-8-20 1470 Lassen 1 mi s Milford (nw shore of lake); Honey Lake Valley Comment
  CAS-BOT-BC343698  Madia elegans Margaret Williams; Louella Bass 1972-10-22 EV 7 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  UC1567446  Madia exigua G. Schoolcraft 1989-6-7 1903 Lassen lower ne slopes Shaffer Mtn. 1432 Comment
  CAS-BOT-BC334689  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  OBI55501  Madia glomerata David J. Keil, Kathleen Keil 1992-7-25 23607 Lassen Along hwy 36, 9.1 mi E of Plumas County line, W of Susanville Comment
  RSA338583  Madia gracilis Noel Holmgren, Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale. 1677 Comment
  CAS-BOT-BC343060  Madia gracilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50653 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC512879  Maianthemum stellatum Louella Bass 1973-5-25 37 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC347441  Malacothrix floccifera Louella Bass 1973-6-23 131 Lassen Elysian Valley 1325 Comment
  SEINET11601737 Image available Malacothrix sonchoides G. Schoolcraft 1980-5-16 236 Lassen Behind kiln overn along Wendel Highway 1280 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-BC348030  Malacothrix torreyi Arnold Tiehm 1978-5-15 4159 Lassen .4 mile west of the Nevada stateline on highway 81 from Gerlach to Cedarville Comment
  JEPS124804 Image available Malva neglecta Peter Schultz 1967-7-2 172 Lassen 1 mile south of Milford city limit. Highway 395. Comment
  UCD116543  Malva neglecta P. B. Schultz 1967-7-11 72 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  UC1594528  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1992-7-16 5126 Lassen between Old Station and Susanville (Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1 mi e of Willow Spring Rd. (Forest Rd. 31N56)) 1745 Comment
  CHSC4807  Marsilea vestita R. Carter 1967-7-7 579 Lassen Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  RSA0011558  Marsilea vestita R. F. Thorne, Larry E. DeBuhr 1975-8-22 46994 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC7653  Matricaria discoidea Jesse Langdon 1969-6-3 26 Lassen Susanville, Soil Conservation Office. 1310 Comment
  CHSC112767  Matricaria occidentalis Lowell Ahart; John Dittes 2013-7-22 18863 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC271118  Melica bulbosa G. Schoolcraft 1995-5-17 2490 Lassen Three Springs on S slope of Five Springs Mtn. 1524 Comment
  CAS-BOT-BC262447  Melica subulata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49438 Lassen 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
  SEINET10452609  Melilotus officinalis Mary Susan Taylor 1982-6-12 Taylor 4654 Lassen T22N R17E ne sec 11. Beckwourth Pass quad. NW corner of Hallaleuja Jct, jct of Hwys 70 and 395, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  JEPS63459  Mentha canadensis W. L. Jepson 1918-8-2 7784 Lassen on lower bench Long Valley Creek (1 mi below Boni Ranch house, Long Valley); Long Valley, on lower bench of Long Valley Creek 1371 Comment
  UC1594650  Mentha canadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5109 Lassen Bridge Creek entering McCoy Flat Reservoir (on the s side of Hwy 44 between Old Station and Susanville); Bridge Creek entering McCoy Flat Reservoir 1691 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
  RSA7885  Mentzelia albicaulis H. A. Barker 1927-7-15 807 Lassen Desert east of Beckwith [Beckwourth], near highway. Comment
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Dec 30 2016
  HSC42457  Mentzelia albicaulis Barbara Kelly 1977-8-9 569 Lassen On Rd. from Adin to Madeline, 10.1 mi. E of Madline. Comment
  CHSC66392  Mentzelia dispersa Vernon H. Oswald; Lowell Ahart 1996-6-17 7772 Lassen Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants in dry soil on the edge of the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  UC1121687  Mentzelia dispersa A. Simontacchi 1940-6-5 818 Lassen 8 m wnw Harvey Valley Ranger Station; Halls Flat Quad, Lassen National Forest Comment
  UC1191589  Mentzelia dispersa Verne Grant, Irving Schneider 1947-8-1 8228 Lassen w end Section 19 (Irringation ditch running southwest into State Fish & Game nesting area.); Medelain Plain Comment
  UC506973  Mentzelia dispersa George A. Fischer, Irwin H. Johnson 1933-7-12 F 229 Lassen Lassen Forrest, Patterson Flat 1737 Comment
  CHSC5301  Mentzelia laevicaulis M. West 1946-7-17 Lassen Antelope Grade, near Susanville. Eagle Lake. 1615 Comment
  RSA202434  Mentzelia montana Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of Likely) 1905 Comment
  CHSC101036  Micranthes nidifica John Dittes 2008-5-22 1522 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. 482 Comment
  SD8331  Micranthes odontoloma Mrs. R. M. Austin 1882-8-1 Lassen Lassen Co Comment
  SEINET5345127  Micromonolepis pusilla A. Tiehm 1980-1 5757 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CHSC99239  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC1609228  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  CHSC106089  Microseris nutans Lowell Ahart; John Dittes 2010-7-31 17000 Lassen Dry meadow, on the north side of the road, about 30 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC66235  Microseris nutans Vernon H. Oswald; Lowell Ahart 1996-6-24 7866 .1 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  UC35776  Microseris nutans M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  CHSC99150  Microsteris gracilis Lowell Ahart; John Dittes 2008-6-20 14929 Lassen Around vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA74070  Microsteris gracilis subsp. humilis Milo S. Baker 1952-5-23 12414 Lassen Highway 36, east of Chester Comment
  SEINET13764907  Mimetanthe pilosa M. J. Williams 1974-7-26 74 -L-29 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UC1609128  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  CHSC5905  Mimulus floribundus M. West 1946-7-1 Lassen Pine Creek, Eagle Lake. 1584 Comment
  UC726695  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi e Westwood 1524 Comment
  CDA41793  Mimulus guttatus Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 533 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  UC1523772  Mimulus moniliformis Gary Schoolcraft 1981-6-25 475 Lassen Comment
  CHSC59100  Mimulus moschatus Vernon H. Oswald; Lowell Ahart 1992-8-25 5182 Lassen Lassen Volcanic National Park. Grassy creek near the S end of Snag Lake. 1853 Comment
  RSA447975  Mimulus moschatus var. moniliformis Christopher Davidson 1974-7-25 2496 Lassen Lassen Volcanic National Park. 1982 Comment
  CDA38387  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen By south side of Highway 44, vicinity of Bogard Campground. Comment
  JEPS94106  Mimulus nanus Vernon H. Oswald and Lowell Ahart 1998-5-22 9118 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 1.1 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1447 Comment
  SEINET10570251  Mimulus nanus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17798 Lassen 6 mi n of halleluja hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET10830517  Mimulus nanus Mary Susan Taylor 1974-1 Taylor 311 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS24856  Mimulus nanus var. mephiticus Jean Langenheim 1957-6-26 4377 Lassen nw end Said Valley 1645 Comment
  UC1537591  Mimulus nanus var. mephiticus Gordon H. True Jr. 1936-6-26 548 Lassen 2 mi e Eagle Lake (head of creek); Willow Creek 1584 Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  RSA60366  Mimulus nanus var. nanus E. K. Balls 1950-5-9 15953 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  UC1136832  Mimulus primuloides subsp. primuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 243 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  JEPS94112  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1998-5-22 9123 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  JEPS8121  Mimulus torreyi Brown and Wieslander 1922-7-28 10 Lassen near Martin Springs Comment
  CHSC13637  Monardella odoratissima M. S. Taylor 1974-7-3 275 Lassen Abundant along roadsides ca. 5 mi s of Eagle Lake and Gallatin Beach. 1524 Comment
  CAS-BOT-BC221781  Monardella odoratissima L. P. Janeway 1990-7-4 3771 B Lassen Ca 0.9 mi NE of Meadowview [Mountain View] Peak 1981 Comment
  CHSC65314  Monardella odoratissima subsp. glauca Vernon H. Oswald; Lowell Ahart 1995-8-14 7192 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  LA54200  Monardella odoratissima subsp. glauca John Thomas Howell; 1934-6-10 11888 Lassen 12 mi. N of Susanville on rd to Horse Lake Comment
  RSA122018  Monardella odoratissima subsp. glauca L. R. Short, Wm Gansberg 1936-7-3 S- 467 Lassen MDM, Burgess Spr. Exp. Range. 1849 Comment
  UC773899  Monardella odoratissima subsp. glauca L. R. Short and Wm. Gansberg 1936-7-3 S- 467 Lassen Burgess Spring Experiment Range Lassen Forest 1847 Comment
  LA54185  Monardella odoratissima subsp. glauca Carl Epling; William Robison 1935-7-15 sn Lassen Fredonyor Pass Comment
  UCD125203  Monardella odoratissima subsp. glauca John F. Sorenson 1986-7-5 s.n. Lassen 9 miles southeast of Termo, Bailey Creek drainage; Bailey Creek above Bailey Reservoir. Comment
  CHSC23511  Monardella odoratissima subsp. pallida Wayne O. Baum 1971-7-12 71 -69 Lassen E. slope of Gallatin Peak. 2011 Comment
  CHSC116086  Monolepis nuttalliana Lowell Ahart; John Dittes 2015-7-13 20311 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
  CHSC75490  Monolepis nuttalliana Vernon H. Oswald; Lowell Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  JEPS114695  Monolepis nuttalliana Lowell Ahart, John Dittes 2002-6-20 14973 Lassen W of where the levee road crosses Big Valley Canal, in Big Valley, about 4 mi (air) NE of the Headquarters at Ash Creek State Wildlife Area, about 7 mi (air) NE of Bieber 1263 Comment
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Oct 5 2019
  POM103154  Monolepis spathulata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC444693  Montia chamissoi Lassen 1927 G. S. Crew 1927-6-25 25 Lassen Lassen National Forest. Norval Flat 2051 Comment
  HSC95205  Montia chamissoi Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 542 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1136742  Montia chamissoi Robert W. Gardner 1937-6-14 G 3 Lassen Burgess Spring Experimental Range 1767 Comment
  RSA0035909  Montia linearis Lowell A. Ahart, John Dittes 2008-6-20 14938 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS88525  Montia linearis Vernon H. Oswald and Lowell Ahart 1996-6-24 7875 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montane Meadow in Yellow Forest. Comment
  CAS-BOT-BC262634  Muhlenbergia asperifolia John Thomas Howell; G. H. True 1973-8-1 50147 Lassen In Mountain Meadows east of Westwood 1554 Comment
  UC1024645  Muhlenbergia asperifolia Leo Whitney 1934-7-4 2212 Lassen sand dunes near north shore; Lassen National Forest, Eagle Lake 1584 Comment
  UC1137155  Muhlenbergia asperifolia August L. Hormay 1932-8-12 Lassen se edge of lake Lassen National Forest, Eagle Lake Comment
  UC589857  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6072 Lassen Baxter Creek Susanville Quadrangle 1280 Comment
  CDA32536  Muhlenbergia asperifolia T. C. Fuller 1980-8-6 20317 Lassen Rush Creek, north of Smoke Creek Ranch Road, 2 km. west of the stateline, 28.75 km. (18.5 mi.) northeast of Hwy 395, northeast of Ravendale. 0 Comment
  UC1024685  Muhlenbergia filiformis Leo Whitney 1933-8-3 2160 Lassen ca 10 mi nw north end of Eagle Lake; Lassen National Forest, Sheepshead 1889 Comment
  UC1024822  Muhlenbergia filiformis Leo Whitney 1935-6-21 3250 Lassen meadow Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  CAS-BOT-BC275084  Muhlenbergia richardsonis G. Schoolcraft 1999-6-30 2852 Lassen Small res. 1 mile W of Horne Ranch, 12 miles E of Ravendale 1645 Comment
  UCD86950  Muhlenbergia richardsonis R. M. Love 1940-7-5 s.n. Lassen Madeline Plains. Comment
  UCD86985  Muhlenbergia richardsonis L. D. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Company, Camp #10. Comment
  CHSC71134  Muilla transmontana Vernon H. Oswald; Lowell Ahart 1998-5-22 9133 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  CHSC66236  Myosotis micrantha Vernon H. Oswald; Lowell Ahart 1996-6-24 7880 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Along Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  UC1609242  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-7-8 5651 Lassen 1.9 mi n ow Hwy 44, on se edge of Poison Lake (Pittville Road) 1709 Comment
  CHSC107321  Myosurus minimus Lowell Ahart; John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC68760  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1997-5-27 8518 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy.139. 1682 Comment
  RSA0035919  Myosurus minimus Lowell A. Ahart, John Dittes 2008-6-20 14940 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
  RSA0062303  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC676  Myriophyllum sibiricum V. Holt 1946-7-12 Lassen Pine Creek Slough. 1584 Comment
  UCR153449  Myriophyllum sibiricum R. F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139 1646 Comment
  RSA634201  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139. Comment
  UC585170  Nama aretioides var. multiflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1773 Lassen Red Rock 1280 Comment
  JEPS107795  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11908 -A Lassen On the east side of Scott Road, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1460 Comment
  UC971978  Nama lobbii Annetta Carter 1946-8-19 1777 Lassen crest of ridge ten mi ne Susanville; ne of Susanville 1676 Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  CHSC6207  Navarretia breweri W. Vinyard 1946-6-12 Lassen Eagle Lake. Willow Creek. 1463 Comment
  CHSC64883  Navarretia breweri Vernon H. Oswald; Lowell Ahart 1995-6-19 6885 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.9 mi e of Hwy. 395, on the down-slope approaching Mud Flat. 1353 Comment
  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
  RSA702602  Navarretia breweri L. P. Janeway 2004-6-26 8143 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1124158  Navarretia breweri A. Simontacchi 1940-5-28 774 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC773905  Navarretia breweri L. R. Short and J. Warren 1936-6-5 S- 374 Lassen Burgess Spring Experiment Range Lassen Forest 1798 Comment
  CHSC1241  Navarretia capillaris 1944-6-30 Lassen Grasshopper Valley, N. of Eagle Lake. 1615 Comment
  UC1037269  Navarretia divaricata Leo Whitney 1934-7-10 1773 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Harvey Valley 1737 Comment
  CHSC117294  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2016-7-13 21131 Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1184059  Navarretia intertexta subsp. propinqua Jean Langenheim 1957-6-22 4366 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  UCD48605  Navarretia intertexta subsp. propinqua John M. Tucker 1950-7-25 1977 Lassen On road from Pittville, 33 miles northwest of Susanville, Lassen County, California. Comment
  GMDRC6949  Navarretia leptalea subsp. leptalea J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31423 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
  HSC82246  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1980-7-6 5986 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM312617  Navarretia leucocephala subsp. minima Malcolm A. Nobs, S. Galen Smith 1949-5-29 756 Lassen Nubieber on Great Northern Railway, Highway 299 Comment
  UC1137761  Navarretia leucocephala subsp. minima August L. Hormay 1934-5-15 Lassen 2 mi n Eldridge's; Lassen Forest 1524 Comment
  UC1537488  Navarretia leucocephala subsp. minima Gordon H. True Jr. 1936-6-25 528 Lassen e of Harvey Ranger Station; Harvey Valley 1706 Comment
  HSC96700  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1986-6-24 8183 Lassen Along SR 395 58.9 mi. N of jct. with SR 36 Comment
  UC1178962  Navarretia linearifolia subsp. linearifolia Herbert L. Mason Jul 29 1955-Jul 31 1955 14643 Lassen near Westwood Junction (railroad station 15 mi w Susanville) (southern Lassen County); w of Susanville, near Westwood Junction 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
  CHSC115600  Navarretia sinistra subsp. sinistra Lowell Ahart; John Dittes 2015-7-14 20521 Lassen Northwest of the pond, east part of the camping area, west side of Childs Meadow, 0.67 air-miles west of intersection of State Highway 36 and Wilson Lake Road (County Road 769), 1.21 air-miles southeast east of Doe Mt., 10.41 air-miles south of Lassen Peak. 1498 Comment
  JEPS120810  Nemophila pedunculata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18724 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC604678  Nemophila pedunculata Farris Farris 1935-5-20 Lassen five mi sw Susanville; sw of Susanville 1341 Comment
  SEINET4143037  Neoholmgrenia andina Noel H. Holmgren, Patricia K. Holmgren 1980-7-5 9521 Lassen Upper Smoke Creek drainage, 20.4 km (12.7 mi) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale.; 0 1580 Comment
  UC20413  Neoholmgrenia andina Mrs. R. M. Austin and Bruce June 1898 2364 Lassen Shumway Comment
  CHSC44642  Nestotus stenophyllus J. D. Jokerst 1983-5-30 1795 Lassen Ca. 1.5 miles north of the north edge of Eagle Lake ca. 1.0 mile N of Eagle Lake Rd 50 meters west of Highway 139. Comment
  JEPS97321  Nicotiana attenuata Vernon H. Oswald and L. Ahart 1995-8-14 7182 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  UCD126693  Nicotiana attenuata Gerald Dickinson 1963-7-17 108 Lassen at entrance of Eagle Lake recreation site, Highway 139. 1559 Comment
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 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
  CDA20352  Oenothera alyssoides var. villosa D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  UCD106858  Oenothera deltoides R. N. Raynor 1939-5-31 s.n. Lassen Milford, Honey Lake Valley. Comment
  JEPS94105  Oenothera deltoides subsp. piperi Vernon H. Oswald and Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  POM38743  Oenothera deltoides subsp. piperi Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  SJSU10936  Oenothera deltoides subsp. piperi G. R. Ostrander 1965-7-12 70 Lassen by Hwy 395, 5 mi N of Doyle 1158 Comment
  UC1562804  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved rd) 1524 Comment
  UC157874  Olsynium douglasii var. douglasii Milo S. Baker 1890-1 Lassen Milford Comment
  CHSC71384  Onopordum acanthium Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9262 Lassen Near Bieber on Susanville Rd. (A2) 2.5 mi east of Hwy. 299. Roadside and fields. 1280 Comment
  UC1561410  Orobanche corymbosa subsp. corymbosa Barbara Ertter 1987-7-25 7315 Lassen Ca 27 air miles NW of Susanville, FR33N02 to Harvey Valley W of junction with FR33N04. Comment
  CAS-BOT-BC500270  Orobanche uniflora subsp. occidentalis Doris Kildale Gillespie 1930-5-13 9368 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC238447  Orthocarpus Mike Vasey 1990-6-30 9054 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CHSC37345  Orthocarpus cuspidatus subsp. cryptanthus J. D. Prouty 1978-6-28 5 Lassen Lower Dry L., SE of Eagle L. 1645 Comment
  JEPS9435  Orthocarpus cuspidatus subsp. cryptanthus Brown and Wieslander 42 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  UC1609287  Orthocarpus cuspidatus subsp. cryptanthus Vernon H. Oswald and Lowell Ahart 1993-6-28 5604 Lassen Rd 35N04 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley, ne of Poison lake 1725 Comment
  SEINET178349  Osmorhiza berteroi Marcus E. Jones 1897-6-28 Lassen Diamond Mt., Susanville, Perkin's Ranch. 1829 Comment
  UC1137732  Osmorhiza occidentalis L. R. Short and J. Warren Jun 9 1936-Jul 3 1936 S- 403 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1844 Comment
  CHSC63381  Packera cana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6312 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  HSC63731  Packera cana Teresa Prendusi 1980-7-14 1118 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  SEINET10537847  Paeonia brownii Mary Susan Taylor 1982-8-27 Taylor 5053 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  SEINET4691127  Panicum capillare A. Tiehm 1980-1 5759 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel 1220 Comment
  CHSC71076  Pectocarya penicillata Vernon H. Oswald; Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  JEPS94120  Pectocarya penicillata Vernon H. Oswald and Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  SEINET13352677  Pectocarya penicillata A. Tiehm 1980-1 5753 Lassen N end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 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
  SBBG7089  Pedicularis attollens H. and M. Dearing 1938-7-1 2238 Lassen 12 mi W of Susanville Comment
  CHSC5004  Pedicularis semibarbata K. C. Newman 1967-7-14 80 Lassen Collected near Silver Lake, along the road just past the picnic area in dry soil. 1828 Comment
  CHSC5899  Pedicularis semibarbata P. Balch 1955-7-20 Lassen Eagle Lake. 5 mi from Antelope Lookout. 2072 Comment
  RSA121814  Pedicularis semibarbata G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 272 Lassen Lassen Forest. 1738 Comment
  SEINET10547960  Penstemon confusus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2607 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along ridge and in sandy wash. 1402 Comment
  UC1063371  Penstemon deustus A. Simontacchi 1940-6-4 795 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC4441  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-30 2451 Lassen West Central side of Eagle Lake. 1554 Comment
  JEPS28681  Penstemon deustus var. pedicellatus George W. Gillett 1957-7-26 908 Lassen e shore Butte Lake Lassen Volcanic National Park, e shore Butte Lake 1859 Comment
  NY600703  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen East slope of Tule Mountains 1770 Comment
  UC1035884  Penstemon gracilentus Annie M. Alexander and Louise Kellogg 1946-8-13 5157 Lassen w side of Eagle Lake Comment
  UC1537436  Penstemon gracilentus Gordon H. True Jr. 1938-7-14 959 Lassen summit on Milford Grade , just on n slope (just on n slope) 1676 Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  UC477494  Penstemon gracilentus A. G. Brenneis 1928-7-3 9 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  UCD124179  Penstemon gracilentus K. M. Meyer; A. Townesmith 2007-7-23 157 Lassen Lassen National Forest. 3.9 miles southwest on 32N10 off Hwy 44. (Turn at rest area). 503 Comment
  CAS-BOT-BC245656  Penstemon janishiae G. Schoolcraft 1997-8-6 2660 Lassen Diamond Mtn. 2316 Comment
  CHSC68882  Penstemon janishiae Vernon Oswald; Lowell Ahart 1997-6-24 8644 Lassen South of Susanville near the small pool on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC66733  Penstemon neotericus Vernon H. Oswald; Lowell Ahart 1996-8-1 8118 Lassen Junction of Forest Rd. 28N56 (D-line) and the spure road to Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1536 Comment
  SEINET11262116  Penstemon neotericus Karl A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mtn. Along CA A1 ca 4 mi NW of jct CA 36, site ca 6 air mi WNW of Susanville.; 0 1737 Comment
  HSC21043  Penstemon newberryi Fred J. Kindel 1955-7-19 Lassen Silver Lake Comment
  RSA257090  Penstemon newberryi Christopher Davidson 1974-7-23 2497 Lassen Lassen Volcanic Nat'l Park. Rd to Juniper Lake. 2134 Comment
  HSC81496  Penstemon roezlii Thomas W. Nelson, Jane Nelson 1980-7-6 6021 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  JEPS23794  Penstemon roezlii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7138 Lassen Sandy playa beside U.S. 395 one-fourth mi s of junction of road to Smoke Creek; s of junction of rd to Smoke Creek 1341 Comment
  NY650115  Penstemon roezlii F. W. Pennell 1940-6-9 25755 Lassen Route 395, 5 miles north of Madeline 1676.4 Comment
  SEINET5323614 Image available Penstemon rydbergii N. H. Holmgren, P. K. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CAS-BOT-BC239494  Penstemon rydbergii var. oreocharis Lassen 1927 G. S. Crew 1927-7-1 49 Lassen Lassen National Forest, Bogard R.S. pasture 1712 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
  CHSC12483  Penstemon rydbergii var. oreocharis Carol Weld 1969-6-20 15 Lassen Dean's Meadow. 1950 Comment
  CHSC1878  Penstemon rydbergii var. oreocharis K. Chew 1954-7-6 Lassen Along Pine Creek, 1 mi. below Stephens meadows. 1828 Comment
  HSC81544  Penstemon rydbergii var. oreocharis Thomas W. Nelson, Jane Nelson 1980-7-6 6046 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  POM252929  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen Along Hwy 36, 1 mile east of Westwood. 1524 Comment
  UC54980  Penstemon rydbergii var. oreocharis J. B. Davy Lassen Amedee Comment
  UC696714  Penstemon rydbergii var. oreocharis David D. Keck 1938-6-22 15182 Lassen one mi e Westwood; e of Westwood 1524 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
  JEPS29738  Penstemon speciosus Rimo Bacigalupi and L. R. Heckard 1962-5-28 8493 Lassen along U.S. highway 395, 10 mi s Milford; s of Milford 1219 Comment
  POM194755  Penstemon speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats). 1494 Comment
  UC1527430  Penstemon speciosus Gordon H. True Jr. 1936-6-25 529 Lassen e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station 1767 Comment
  UC1583941  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen sw slopes of Cold Spring Mtn. 1889 Comment
  UC773855  Penstemon speciosus L. R. Short and J. Warren 1936-6-26 S- 357 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  CDA33279  Penstemon speciosus T. C. Fuller 1963-6-11 10665 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  UCSB11863  Penstemon speciosus Haller, John 1961-6-26 Lassen Hat Creek- Susanville Road, about 14 mi E of Calif. 89 at Subway Cave 1737 Comment
  NY661060  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats) southeastern Lassen County. 1493.5 Comment
  JEPS84973  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains, Honey Lake 1828 Comment
  NY661796  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass 1615.4 Comment
  NY661801  Penstemon sudans D. D. Keck 1930-7-23 948 Lassen Susanville 1280.2 Comment
  NY661803  Penstemon sudans N. H. Holmgren 1978-6-12 8937 Lassen Rye Patch Canyon, 4.3 km (2.7 miles) east of U.S. Highway 395, just above Ramhorn Campground, 14.5 km (9 miles) airline distance southeast of Ravendale. 1740 Comment
  UC887362  Penstemon sudans Lewis S. Rose 1940-6-15 40594 Lassen 10 mi n Susanville (Round Valley); , n of Susanville 1524 Comment
  RSA0029641  Penstemon sudans Anthony Baniaga, R. Bomberger 2011-7-28 478 Lassen Lassen National Forest. Highway 36, ca. 1/4 mile E of 'Fredonyer Pass Winter OHV Parking Lot.' 1950 Comment
  SEINET5323639 Image available Penstemon sudans J. T. Howell, Gordon H. True 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1585 Comment
  SEINET12335380  Penstemon venustus K. A. Vincent 1987-1 4500 Lassen Sierra Nevada, SE side of Fredonyer Butte, N side of CA 36 ca 11.5 mi WSW of Susanville 1585 Comment
  CAS-BOT-BC140468  Peraphyllum ramosissimum James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 miles ssw. of Karlo 1417 Comment
  CDA26041  Peraphyllum ramosissimum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20382 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  CHSC7723  Peraphyllum ramosissimum Beverley J. Wise 1969-5-4 193 Lassen 1.5 mi. west of Shaeffer Mtn lookout access road off Hwy 395 (approx. 1 mi. south of Las Co. 338). 1676 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
  RSA59742  Peraphyllum ramosissimum E. K. Balls 1950-5-19 14789 Lassen 1.6 miles S of Modoc county line, Hwy. 395, between Madeline and Likely. 1463 Comment
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  SEINET11153899  Perideridia gairdneri subsp. borealis M. S. Baker July 31 (no year) s.n. Lassen Silver Lake. Comment
  CHSC42653  Perideridia oregana Vernon Oswald 1986-7-22 2218 Lassen Hwy 36, 15.0 mi e of the Plumas-Lassen County line, 3.5 mi ne of Freydonyer Pass. 1508 Comment
  CAS-BOT-BC423339  Peritoma platycarpa Noel H. Holmgren; Patricia K. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  CAS-BOT-BC413480  Persicaria amphibia L. S. Smith 1918-7-22 1006 Lassen Modoc National Forest. Blue Lake 1874 Comment
  SJSU10648  Persicaria amphibia H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CHSC59095  Persicaria lapathifolia Vernon H. Oswald; Lowell Ahart 1992-8-25 5189 Lassen Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  CHSC71885  Persicaria lapathifolia Vernon H. Oswald 1998-9-8 9583 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1258 Comment
  CAS-BOT-BC419143  Persicaria maculosa G. Schoolcraft 1995-8-16 2515 Lassen North of Cherry Mountain 1584 Comment
  UC1069415  Phacelia A. Simontacchi 1940-6-24 849 Lassen 0.2 mi nnw Halls Flat; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS79215  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  JEPS79216  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  POM266184  Phacelia adenophora J. T. Howell 1934-6-10 11898 Lassen Horse Lake Comment
  SEINET5536525  Phacelia adenophora G. Schoolcraft 1980-6-5 252 Lassen Northeast side of Snowstorm Mtn. 1585 Comment
  JEPS94704  Phacelia bicolor var. bicolor Vernon H. Oswald and Lowell Ahart 1998-5-22 9132 Lassen 6 mi ne of Doyle (3.5 mi e of Fort Sage Road, near the summit of the dirt road in the Fort Sage Mountains); Fort Sage Mountains 1737 Comment
  SJSU11244  Phacelia hastata J. W. Tilden 1960-6-27 1499 Lassen foot of Moonlight Rd, outskirts of Westwood 1524 Comment
  UCD55292  Phacelia heterophylla subsp. virgata Ellen Dean; Gary Schoolcraft 2006-5-16 3113 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
  CHSC63401  Phacelia humilis Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6314 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  JEPS3192  Phacelia humilis Hilda W. Grinnell 1934-6-1 Lassen 8 mi sw Susanville (top of divide) 1950 Comment
  SBBG15797  Phacelia humilis H. and M. Dearing 1938-6-30 2234 Lassen 20 mi N of Susanville [Hwy 44] 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
  UC133087  Phacelia humilis T. S. Brandegee 1892-7-3 Lassen Susanville Comment
  POM73344  Phacelia humilis var. humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  POM266183  Phacelia inundata J. T. Howell 1934-7-8 s.n. Lassen Spaldings Resort; Eagle Lake Comment
  UC735052  Phacelia inundata Lincoln Constance 1946-7-3 3097 Lassen Spauldings Eagle Lake (w edge of lake) 1706 Comment
  CHSC33362  Phacelia linearis Wayne O. Baum 1971-7-5 71 -17 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC93235  Phacelia linearis John Dittes; Scott Chamberlain 2004-6-28 1009 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  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
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  OBI75900  Phacelia racemosa Anthony Baniaga 2011-8-1 477 Lassen Lassen Natl Forest. SW Swain Meadow, near marker tree #27. Swain Mtn quad T30N R8E sec 34 NE of NW 1764 Comment
  POM203780  Phacelia ramosissima var. eremophila J. T. Howell 1934-6-10 11873 Lassen Janesville Comment
  RSA72886  Phacelia tetramera Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  SEINET3091893 Image available Phacelia tetramera Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  RSA38633  Phacelia thermalis P. A. Munz 1947-5-19 11878 Lassen Highway 395, 4 miles south of Madeline. Comment
  RSA337279  Phacelia thermalis Noel Holmgren, Patricia K. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U. S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber 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
  JEPS91153  Phlox douglasii subsp. rigida Dean W. Taylor 1974-6-14 3715 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC1567441  Phlox longifolia G. Schoolcraft 1989-5-16 1878 Lassen w of Rice Canyon Rd. (at base of Antelope Mtn.); Antelope Mtn. 1280 Comment
  HSC17176  Phlox longifolia M. L. Stuart 1965-5-2 53 Lassen 35 mi. NE of Susanville Comment
  CHSC108023  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2011-6-20 17506 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC1306  Phlox speciosa subsp. occidentalis M. Anthony 1953-4-27 Lassen Susanville. 1280 Comment
  CHSC91202  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2005-6-2 11928 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  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
  POM74317  Phlox speciosa subsp. occidentalis Marcus E. Jones 1897-6-26 10522 Lassen Susanville, Perkin's Ranch. 1463 Comment
  NY963724  Phlox speciosa var. occidentalis W. W. Eggleston 1911-5-29 6733 Lassen Vicinity of Doyle Station 1290 Comment
  CHSC36447  Phlox stansburyi Susan H. Euing 1982-6-4 1 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. 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
  CHSC36495  Phlox stansburyi Theresa Costa 1982-6-4 31 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. Comment
  CHSC57489  Phlox stansburyi B. G. Clark 1987-4-15 23 Lassen Rocky knoll 1/4 mi sw of Lassen College adjacent and west of hwy 139. 1297 Comment
  HSC17069  Phlox stansburyi Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  JEPS107929  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
  UCD55262  Phlox stansburyi Ellen Dean 2006-5-15 3060 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  UC932052  Phlox stansburyi Verne Grant and Alva Grant 1947-5-5 7979 Lassen n of Honey Lake Valley Comment
  UCD118467  Phlox stansburyi Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  UC1609187  Phoenicaulis cheiranthoides Vernon H. Oswald and Lowell Ahart 1993-5-12 5386 Lassen 1.6 mi se of Pittsville Road (Hwy 44 between Poison Lake and A21 (to Westwood) on n side of road) 1719 Comment
  SEINET7295530 Image available Phragmites John Thomas Howell 1975-1 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia. Comment
  UCD89832  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395. Southeast of Constantia. Comment
  CAS-BOT-BC60737  Physaria occidentalis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mountain. Susanville. Perkin's Ranch. 2225 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
  CAS-BOT-BC227994  Plagiobothrys Ella Dales Cantelow 1941-5-22 3474 Lassen 5 miles W of Susanville, State Highway 36 Comment
  POM204143  Plagiobothrys bracteatus J. T. Howell 1934-7-10 12540 Lassen Patterson Flats 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
  RSA0105587  Plagiobothrys cusickii Lowell Ahart, John Dittes 2013-7-22 18870 Lassen 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
  UC78130  Plagiobothrys cusickii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  JEPS107963  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 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
  JEPS94132  Plagiobothrys leptocladus Vernon H. Oswald and Lowell Ahart 1998-5-22 9099 Lassen ca. 3 mi. n. Doyle (Hackstaff Rd. 1.0 mi. s.of Laver Crossing Rd., 0.2 mi. n. of Fort Sage Rd.) 1316 Comment
  SBBG6336  Plagiobothrys mollis H. and M. Dearing 1939-6-6 3567 Lassen marsh on Pitt River, Bieber Comment
  SEINET10972885  Plagiobothrys scouleri var. hispidulus Katherine L. Morris 1973-5-25 Morris 248 Lassen 27.7 mi NW of the junction of Hwy 36 & 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
  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
  JEPS126570  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2016-6-7 20978 Lassen 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. 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
  RSA0017432  Plantago lanceolata Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  SJSU9125  Platanthera dilatata var. leucostachys H. L. Buckalew 1961-7-2 Lassen Blue Lake near Blue Lake Road Comment
  CHSC4752  Platanthera leucostachys R. Carter 1967-7-14 609 Lassen Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  JEPS64411  Platanthera leucostachys Brown and Wieslander 1922-7-17 21 Lassen Martin Sprs. Eagle Lake Comment
  CHSC107326  Plectritis macrocera Lowell Ahart; John Dittes 2011-6-20 17494 Lassen Meadow, about 30 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC7742  Plectritis macrocera Beverly J. Wise 1969-4-10 118 Lassen 2.8 mi. north of Susanville on Shasta Forest logging Rd #7-off Hwy 139. 1341 Comment
  JEPS114707  Plectritis macrocera Lowell Ahart, John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  RSA433737  Plectritis macrocera Christopher Davidson 1975-6-7 2754 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SEINET10550970  Plectritis macrocera Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3116 Lassen 6 miles 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-BC326715  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade south of and paralleling Highway 70 just southeast of Beckwourth Pass on Plumas-Lassen county line 1584 Comment
  UC768477  Pleiacanthus spinosus Robert F. Hoover 1940-9-28 4630 Lassen Susanville Comment
  UC1031352  Poa Leo Whitney 1935-6-26 3367 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UCD92172  Poa A. A. Beetle 1941-6-28 2815 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 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
  UC1136987  Poa X fibrata George A. Fischer and Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat; Lassen Nat'l Forest 1737 Comment
  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
  RSA295427  Poa bulbosa J. R. Reeder, C. G. Reeder 1981-5-20 7349 Lassen 3.5 km NNW of Janesville. Transition above Long Valley. 1250 Comment
  UC1924563  Poa bulbosa Debra Valov 2006-5-30 2006035 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  SEINET10868155  Poa bulbosa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17757 Lassen Approx. 12 mi S of Adin on Calif. Hwy 139, in basalt & clay; along edge of road on rolling knol, in Artemisia-Juniper assoc. 1372 Comment
  SEINET7744866  Poa bulbosa H. Durio 1979-5-23 s.n. Lassen Meyers Ranch, Adin. Comment
  UCD90918  Poa cusickii Leo Whitney 1935-6-10 3214 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UC1024815  Poa cusickii subsp. cusickii Leo Whitney 1935-6-19 3264 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest 1722 Comment
  HSC95280  Poa leptocoma subsp. leptocoma Gordon Leppig 1998-7-12 944 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  RSA129249  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadows 1524 Comment
  SEINET175720 Image available Poa secunda Marcus E. Jones 1897-6-25 Lassen Susanville 1341 Comment
  UC1951068  Poa secunda Debra Valov 2009-4-26 2009024 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET10522723  Poa secunda Jeffrey Huber 1971-6-2 Huber 106 Lassen 4 mi S of Adin along CA Hwy 139 in basalt-clay; valley floor in Artemesia. 1341 Comment
  CHSC77270  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2350 Lassen About 1.5 miles NE of Red Rock Lake. 2042 Comment
  UC1024831  Poa secunda subsp. juncifolia Leo Whitney 1935-6-12 3229 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024938  Poa secunda subsp. juncifolia Leo Whitney 1935-6-26 3336 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC39629  Poa secunda subsp. juncifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3316 Lassen Honey Lake Valley Comment
  UCD92396  Poa secunda subsp. juncifolia A. H. Shunk 1923-7-28 s.n. Lassen Madeline. Comment
  CAS-BOT-BC236184  Poa secunda subsp. secunda John Thomas Howell 1976-7-20 52008 Lassen About 5 miles W of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC27574  Poa secunda subsp. secunda Robert Schlising 1978-7-1 3306 Lassen S of Eagle Lake near Mahogany Lake. 2060 Comment
  UC1024680  Poa secunda subsp. secunda Leo Whitney 1934-7-12 2166 Lassen 5 mi w of lower end Eagle Lake (summit of Antelope Mt); Lassen Nat'l Forest 2286 Comment
  UC1024681  Poa secunda subsp. secunda Leo Whitney 1934-7-10 2165 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen Nat'l Forest, Harvey Valley 1737 Comment
  UC1132879  Poa secunda subsp. secunda Robert W. Gardner 1937-6-16 G- 5 Lassen Burgess Spring Experimental Range; Halls Flat Quadrangle Comment
  UC127313  Poa secunda subsp. secunda Milo S. Baker Lassen Dixie Valley Comment
  UCD91653  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True, Margaret Williams 1973-5-12 49196 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  UC1024807  Poa wheeleri Leo Whitney 1935-6-23 3286 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  CAS-BOT-BC244269  Podagrostis humilis George W. Gillett 1957-7-28 925 a Lassen Lassen Volcanic National Park. Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake, 100 yards above trail junction 1859 Comment
  UC1609361  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5669 Lassen ca. 5.4 mi. (air) n.w. Poison Lake (Halls Flat Rd. (33N18), 1.4 mi. s.-s.w. of Pittville Rd. (Lassen 111, 36N01), w. side of rd.) 1694 Comment
  SEINET8729406 Image available Polemonium micranthum Unknown 1986-1 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill, T36N, R16E, S35, 5600 ft. 1707 Comment
  CHSC59703  Polyctenium fremontii Teresa Prendusi; Mary Meyer 1980-5-16 Lassen 1615 Comment
  NY182309  Polyctenium fremontii A. Tiehm 1984-6-25 8825 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81. 1828.8 Comment
  CAS-BOT-BC74171  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Highway 395. 1609 Comment
  SEINET229584  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Hwy 395. 1609 Comment
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  RSA0004886  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  CAS-BOT-BC167846  Polygala subspinosa F. J. Hermann 1972-5-17 24760 Lassen Ca. 18 miles N. Litchfield Comment
  POM104579  Polygonum amphibium var. stipulaceum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1136194  Polygonum bistortoides Robert W. Gardner 1937-6-20 G- 20 Lassen Burgess Spring Halls Flat Quadrangle Comment
  CAS-BOT-BC414489  Polygonum douglasii Clare B. Hardham 1969-8-28 17432 A Lassen West of Janesville Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA768026  Polygonum douglasii subsp. spergulariiforme L. Ahart, John Dittes 2010-7-31 16979 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  UC1143031  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experimental Range Lassen National Forest 1767 Comment
  RSA122844  Polygonum kelloggii L. R. Short, Wm. Gansberg 1936-6-8 s 390 Lassen Burgess Spring, Exp Range. 1744 Comment
  CAS-BOT-BC418534  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail 1905 Comment
  JEPS87370  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-8-3 5748 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  UC1609321  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  JEPS87371  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald and Lowell Ahart 1993-8-3 5749 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor, e side of swamp); Cooper Swamp 1932 Comment
  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
  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-BC420159  Polygonum sawatchense subsp. sawatchense G. Schoolcraft 1988-6-15 1814 Lassen Ash Valley RNA/ACEC 16 miles east of Adin 1584 Comment
  JEPS70696  Polypogon monspeliensis W. L. Jepson 1918-8-2 7771 Lassen Beckwith Pass 1463 Comment
  UC1132901  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen near Red Rock; Sierraville Quad., near Red Rock Comment
  CHSC12484  Populus fremontii Carol Weld 1969-6-25 22 Lassen Murrer's Meadow. 1524 Comment
  CHSC67067  Populus fremontii Willis Ball 1969-6-25 33 Lassen Found in Upper Murrer's Meadow. 1584 Comment
  CAS-BOT-BC105617  Populus trichocarpa John Thomas Howell; Gordon H. True 1973-8-1 50148 Lassen Gold Run Creek Road south of Susan ville, Diamond Range - Sierra Nevada 1584 Comment
  JEPS114988  Porterella carnosula Lowell Ahart, John Dittes 2008-6-20 14963 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
  JEPS17746  Porterella carnosula Rimo Bacigalupi with G. T. Robbins 1955-7-20 5408 Lassen 4.4 mi s Patterson Ranger Station (Long Valley, southern end of Warner Mts., Modoc National Forest); Modoc National Forest, s end of Warner Mts. 2057 Comment
  JEPS5602  Porterella carnosula G. S. Crew and C. S. Robinson 71 Lassen Feather Lake Lassen National Forest, Feather Lake (sw Lassen Co.) 1737 Comment
  SEINET3795835 Image available Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1978-6-10 8901 Lassen Madeline Plains, Coyote Flat, 14.5 KM (9 mi) ENE of Termo and 13 km (8 mi) airline deistance 1631 Comment
  UC130334  Porterella carnosula M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  UC195849  Porterella carnosula Franklin P. Nutting Lassen flat near Eagle Lake; near Eagle Lake Comment
  CHSC118487  Porterella carnosula Don Lepley 2015-5-29 Lassen Lassen National Forest. Eagle Lake Ranger District. Southeast corner of Pine Creek Valley, about seven air miles east of Bogard Rest Area. 1716 Comment
  SEINET10460760  Porterella carnosula Eggleston 1927-7-11 EGGLESTON 21476 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  SEINET10460829  Porterella carnosula Howell 1934-7-7 Howell 12466 Lassen Near Feather Lake Comment
  SEINET10460834  Porterella carnosula Rimo Bacigalupi 1955-7-20 Bacigalupi 5408 Lassen Drying clay-loam mud at edges of pool at low spot in Long Valley, 4.4 miles south of Patterson Ranger Station, Modoc National Forest, southern end of Warner Mts. 2057 Comment
  SJSU3186  Porterella carnosula R. L. Fisher 1958-6-16 s.n. Lassen six miles south of Madeline, Madeline Plains, northeastern Lassen County 1615 Comment
  CHSC4837  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UC1099904  Potamogeton amplifolius Verne Grant, Irving Schneider 1947-8-24 8269 Lassen nw shore of Blue Lake (northern Lassen County) Comment
  CHSC100538  Potamogeton foliosus Daniel B. Marcum 2007-7-25 Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  UCD149958  Potamogeton foliosus William Anderson 1963-5-12 s.n. Lassen High Rock. 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
  JEPS88553  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
  JEPS103228  Potamogeton illinoensis G. Schoolcraft 1996-9-11 2562 Lassen Willow Creek below petroglyphs and above dam 1432 Comment
  RSA327306  Potamogeton richardsonii A. Tiehm, Gary Schoolcraft 1984-8-14 9242 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  UC60851  Potamogeton striatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3357 Lassen marsh near Amedee; Honey Lake Valley Comment
  POM312882  Potentilla biennis Verne Grant 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  UC12523  Potentilla fruticosa M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  CHSC6257  Potentilla glandulosa subsp. ashlandica A. Santos 1946-6-20 Lassen Eagle Lake. Grasshopper valley. 1624 Comment
  CAS-BOT-BC141633  Potentilla gracilis var. elmeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49452 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  CAS-BOT-BC540362  Potentilla gracilis var. fastigiata John Thomas Howell 1934-7-6 12440 Lassen Harvey Valley 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
  JEPS103180  Potentilla rivalis G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1645 Comment
  NY833598  Potentilla rivalis var. millegrana G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1646 Comment
  CHSC66401  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1996-6-17 7787 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  CHSC106677  Prunus andersonii Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  SJSU14477  Prunus andersonii W. D. Pitts 1990-5-29 297 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  UC1128502  Prunus emarginata A. Simontacchi 1940-6-4 799 Lassen 7.1 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1836 Comment
  UCD113178  Prunus emarginata Donna Allen 1977-4-20 s.n. Lassen Jamesville grade 1 mile off Highway 89. Comment
  CHSC7721  Prunus virginiana var. demissa Beverley J. Wise 1969-5-18 192 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On canyon wall. 1554 Comment
  UCD91507  Pseudoroegneria spicata Beecher Crampton 1964-6-27 7089 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  CHSC66421  Pseudoroegneria spicata subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7791 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At trailside just SE of the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  UC1143002  Pseudoroegneria spicata subsp. spicata August L. Hormay 1934-5-15 Lassen 15 mi n of Hall's Flat (Lassen Forest and Range Experiment Station, Lassen National Forest); Lassen Forest and Range Experiment Station, Lassen National 1524 Comment
  CAS-BOT-BC174802  Pseudostellaria jamesiana Mrs. H. C. Cantelow 1949-6-11 7 Lassen Summit of Fredonyer Pass Comment
  CHSC60878  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1993-7-8 5671 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  JEPS121242  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2013-7-22 18872 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
  UC1137705  Psilocarphus brevissimus var. brevissimus A. Simontacchi 1940-6-4 804 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1783 Comment
  CAS-BOT-BC361754  Psilocarphus brevissimus var. brevissimus H. D. Ripley; R. C. Barneby 1944-5-30 5961 Lassen North of Viewland 1371 Comment
  JEPS96091  Psilocarphus oregonus Vernon H. Oswald and Lowell Ahart 1996-6-17 7794 Lassen Devils Corral Trailhead Modoc Plateau (shallow ditch just sw of parking area, located off Hwy 36 ca. 7 mi w, trailhead is access to Bizz Johnson Trail) 1420 Comment
  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
  UC1562803  Pterospora andromedea Barbara Ertter 1987-7-25 7319 Lassen Hwy 44 ca 1 mi E of Shasta Co. line 1645 Comment
  CDA38860  Pterospora andromedea H. Wilkerson & W. F. Cruickshank Sep 1964 s.n. Lassen Hayden Hill. 0 Comment
  UCD34874  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs rec. area. Comment
  UCD91899  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat se of Ravendale BLM Fire Station, Susanville. 1645 Comment
  CDA32666  Puccinellia lemmonii Gary Schoolcraft 2000-6-19 2906 Lassen Flat southeast of Ravendale BLM Fire Station. 0 Comment
  CHSC25129  Purshia tridentata Paul Lyman 1970-5-2 29 Lassen Bald Mountain; Janesville. On south slope of Bald Mountain, 10 miles East of Susanville. Comment
  CAS-BOT-BC147819  Purshia tridentata var. tridentata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16321 Lassen Along California Highway 36, about 6 miles W of Susanville Comment
  CAS-BOT-BC147867  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen Near outlet of Widow Lake, ca. 50 yards from lake 2057 Comment
  HSC19580  Purshia tridentata var. tridentata Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  JEPS28802  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen ca 50 yds from Widow Lake (near outlet, near trail); Lassen Volcanic National Park 2057 Comment
  JEPS44640  Purshia tridentata var. tridentata Frank W. Peirson 1932-7-20 10355 Lassen 20 mi se Susanville Comment
  UC1167550  Purshia tridentata var. tridentata E. C. Nord 1958-7-12 108 Lassen near Janesville (near Plumas National Forest) 1371 Comment
  JEPS28673  Pyrola asarifolia George W. Gillett 1957-7-24 900 Lassen Cameron Meadow 1950 Comment
  CAS-BOT-BC462881  Pyrola asarifolia George W. Gillett 1957-7-24 900 Lassen Lassen Volcanic National Park: Cameron Meadow 1950 Comment
  CHSC6237  Pyrola picta P. Balch 1955-7-22 Lassen Between Eagle Lake and Pittville road. 1676 Comment
  UC1523749  Pyrola picta Gary Schoolcraft 1981-7-7 497 Lassen n of Landon Lookout 1981 Comment
  RSA0084884  Pyrola picta Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 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
  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
  JEPS25905  Pyrrocoma lanceolata var. lanceolata John H. Weiler, L Constance, and E. Molseed 1960-6-13 60162 Lassen along US Hwy 395 10.9 mi ne Litchfield 1219 Comment
  UCD46733  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen Southwest of Susanville on Gold Run Road, Lassen County. 1341 Comment
  CAS-BOT-BC379463  Ranunculus alismifolius Louella Bass 1973-4-16 18 Lassen Elysian Valley Comment
  SD8185  Ranunculus alismifolius var. alismellus Mrs. R. M. Austin Aug 1882 Lassen King's Valley Comment
  JEPS55017  Ranunculus alismifolius var. alismifolius Leland S. Smith 1927-5-25 3 Lassen near Westwood Junction; Lassen Forest, Norval Flat 1747 Comment
  UC1609182  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-5-12 5380 Lassen canal crossing Hwy 44 3.5 mi nw A21 (to Westwood) (n side of road and e side of canal) 1729 Comment
  JEPS107311  Ranunculus aquatilis var. aquatilis Lowell Ahart, John Dittes 2005-6-1 11904 Lassen Bottom of a depression, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CHSC36348  Ranunculus aquatilis var. capillaceus M. S. Taylor 1982-6-12 4647 Lassen In pond s side of Hwy 36, n side of West Fork Susan River, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  CHSC6245  Ranunculus aquatilis var. capillaceus R. Gein 1946-6-17 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  POM172668  Ranunculus aquatilis var. capillaceus Franklin Nutting 1894-7-25 s.n. Lassen Eagle Lake Comment
  UC1594639  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1992-7-16 5121 Lassen w Cinder Pit (on logging road paralleling e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, btween Old Station and Susanville); Bridge Creek 1719 Comment
  CHSC112752  Ranunculus aquatilis var. diffusus Lowell Ahart; John Dittes 2013-7-23 18891 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS77523  Ranunculus aquatilis var. hispidulus L. R. Heckard, T. I. Chuang and R. Bacigalupi 1978-7-20 4893 Lassen junction of Blue Lake turn-off with Likely-Patterson Guard Station road; Warner Mts. 1889 Comment
  CHSC108009  Ranunculus macounii Lowell Ahart; John Dittes 2011-6-21 17536 Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley. 1264 Comment
  CHSC117275  Ranunculus macounii Lowell Ahart; John Dittes 2016-7-15 21219 Lassen About 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS123841  Ranunculus macounii Lowell Ahart, John Dittes 2015-7-14 20328 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC118171  Ranunculus occidentalis T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC118184  Ranunculus occidentalis T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  RSA0062681  Ranunculus occidentalis Marion P. Harthill 1972-6-17 825 Lassen Madeline. 1676 Comment
  UCD96933  Ranunculus occidentalis 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
  UC1587083  Ranunculus sceleratus G. Schoolcraft 1991-6-27 2174 Lassen 3 mi e Susanville (n of Johnstonville Rd, along ditch) 1280 Comment
  OBI5233  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville Comment
  UCD97132  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen Susanville, county fairgrounds. Comment
  CHSC4991  Ranunculus uncinatus L. E. Ray 1967-6-24 28 Lassen Collected ca. 3.5 mi. se ELBS, Upper Murrer Meadow. 1524 Comment
  CHSC8729  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01. Comment
  UC1364997  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen on service road #33NO1 two mi n Eagle Lake Resort (w side of lake); Eagle Lake Comment
  CAS-BOT-BC362886  Ratibida columnifera John Thomas Howell 1974-7-9 50486 Lassen SW. of Wildcat Point, Eagle Lake 1554 Comment
  SEINET5845254  Ribes C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  UC79702  Ribes aureum Walter E. Bryant Lassen Comment
  CHSC12476  Ribes cereum Carol Weld 1969-6-19 2 Lassen Juniper sagebrush ca 150 yds. N. of Eagle Lake Field Station. 1554 Comment
  CHSC6263  Ribes cereum W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer summit. 2421 Comment
  CHSC84861  Ribes cereum var. cereum L. P. Janeway; B. Castro 2003-10-5 8003 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  UCR55663  Ribes hudsonianum var. petiolare G. R. Ballmer 1988-7-19 s.n. Lassen Blue Lake, extreme S end of Modoc National Forest, c. 3 mi (airline) south of Modoc county line 1860 Comment
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Jul 20 2010
  JEPS28697  Ribes roezlii George W. Gillett 1957-7-26 917 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  UC1587075  Ribes roezlii G. Schoolcraft 1991-7-30 2191 Lassen n side Widow Mountain (Bear Spring) 1780 Comment
  CHSC106588  Ribes velutinum C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC60743  Ribes velutinum Vernon H. Oswald; Lowell Ahart 1993-6-14 5547 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
  HSC20364  Ribes velutinum L. H. Myers 1963-4-6 37 Lassen 1.0 mi. S of Janesville 1280 Comment
  UCR17277  Ribes velutinum Frank C. Vasek 1975-7-11 750711- 29 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  SEINET2054605 Image available Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen South side of Shaffer Mt., 3.4 road miles North of the Wendel road on highway 395 from Susanville to Alturas, west of highway. 1386 Comment
  JEPS53868  Rorippa curvisiliqua Brown and Wieslander 1922-7-30 24 Lassen Martin Springs Eagle Lake, Martin Springs Comment
  CHSC36490  Rorippa nasturtium-aquaticum Theresa Costa 1982-6-4 36 Lassen Along Willow Creek in Murrers Upper Meadow. Comment
  CHSC5023  Rorippa nasturtium-aquaticum L. G. Bennett 1967-6-24 45 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  SEINET11908427  Rosa californica M. Sacks, Detzer 1977-1 7 Lassen 1mi SE of Milford, 1mi NW of Laufman Ranger Station, T26N, R14E, Sec 1 1341 Comment
  JEPS88554  Rosa woodsii var. ultramontana Vernon H. Oswald and Lowell Ahart 1996-6-17 7773 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at bridge spanning the Susan River on n side of Hwy 36); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  CHSC6261  Rubus leucodermis P. Balch 1955-7-20 Lassen Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville. 1615 Comment
  CAS-BOT-BC110481  Rumex B. C. Cain 1925-8-24 85 Lassen 1 mile below Drakesbad, Mount Lassen National Park. 1645 Comment
  SEINET10479396  Rumex acetosella Paul Gallian, David B. Dunn 1971-6-2 Gallian 482 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus-Jeffrey Pine on mountain range to W at approximately the same altitude. 1250 Comment
  CDA2904  Rumex crispus Gordon Leppig 1998-7-12 962 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  UC1536793  Rumex crispus Gordon H. True Jr. 1939-7-6 1037 Lassen George Bailey Ranch Honey Lake Valley Comment
  CAS-BOT-BC433634  Rumex lacustris James Jokerst 1983-7-25 1891 Lassen Near Madeline Plains. 1614 Comment
  UC6958  Rumex paucifolius Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  UCR163274  Rumex salicifolius Jim Andre 1993-6-29 1409 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  UCR67452  Rumex salicifolius George K. Helmkamp 1990-9-23 G- 14 Lassen north of Ravendale 1677 Comment
  UC1520656  Rumex salicifolius var. lacustris Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9475 Lassen 0.7 mi w (1.1 km w) U. S. Hwy 395 (a valley road, from a turnoff 6.4 mi (10.3 km) s of Madeline); Madeline Plains 1615 Comment
  JEPS121296  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, about 100 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC109417  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia. Comment
  JEPS74706  Rumex venosus Wayne Roderick 1969-5-24 Lassen along Hwy 395 near Janesville Comment
  UCD101656  Rumex venosus R. N. Raynor 1939-5-31 s.n. Lassen Milford, Honey Lake Valley. Comment
  CHSC4993  Sagittaria cuneata R. Clicquennoi 1967-7-1 21 Lassen At edge of small roadside pool 16 mi n of Susanville on highway 139. 1524 Comment
  JEPS32201  Sagittaria cuneata Leland S. Smith 1918-7-22 1009 Lassen Blue Lake 1874 Comment
  HSC2897  Sagittaria cuneata R. G. Means 1962-7-4 70 Lassen 19.5 mi. N of Susanville, Hwy. 139 1524 Comment
  CHSC96714  Salix eastwoodiae Gordon Leppig; J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  SEINET3260830  Salix exigua Marcus E. Jones 1897-6-28 Lassen Susanville. 1340 Comment
  RSA716142  Salix jepsonii L. Ahart, John Dittes 2005-6-2 11947 Lassen About 1.5 miles NE of the Anderson Ranch home. Long Valley. About 6 (air) miles N of the intersection of Scott Road and Hwy 70. 7.5 (air) miles NW of Hallelujah Jct. 1602 Comment
  NY430478  Salix lasiolepis G. Schoolcraft 1998-5-22 2719 Lassen Susan River east end of Susanville 1268.0 Comment
  UC1776696  Salix lemmonii G. Schoolcraft 1994-8-3 2425 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  SEINET10952234  Salix lucida subsp. lasiandra Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 139 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  POM107066  Salix melanopsis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC66405  Salix scouleriana Vernon H. Oswald; Lowell Ahart 1996-6-17 7770 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Ca. 2 mi E of the 7 mile post. 1432 Comment
  JEPS96090  Salix scouleriana Vernon H. Oswald and Lowell Ahart 1996-6-17 7770 Lassen on n side of Hwy 36 ca 0.2 mi e & mile post (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1432 Comment
  CHSC71874  Salsola tragus Vernon H. Oswald; Lowell Ahart 1998-9-8 9582 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  JEPS94087  Salsola tragus Vernon H. Oswald and Lowell Ahart 1998-9-8 9582 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
  CDA34340  Salvia aethiopis Anonymous 1987-6-18 Lassen New Pine Creek, along Hwy 395 north into Oregon. 0 Comment
  CDA19717  Salvia dorrii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  JEPS126481  Salvia dorrii Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-16 CA 350 -038 Lassen Approximately 50 yards off Belfast Road. Take Johnsonville Road E approximately 25 mi then take left on Belfast Road approximately 8 miles. Comment
  CAS-BOT-BC214310  Salvia dorrii var. pilosa H. D. Ripley; R. C. Barneby 1944-5-30 5966 Lassen Secret Valley 1524 Comment
  CAS-BOT-BC214313  Salvia dorrii var. pilosa Ella Dales Cantelow 1941-5-22 3656 Lassen 2 1/2 mi. n. of Secret Valley C.C.C. Camp, Hy. 395, Quincy to Alturas Comment
  CAS-BOT-BC238592  Sambucus nigra subsp. caerulea John Thomas Howell 1974-7-10 50548 Lassen Elysian Valley 1325 Comment
  JEPS94542  Sambucus racemosa var. microbotrys Vernon Oswald and Lowell Ahart 1997-6-24 8609 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville on n side of Diamond Mountain along Forest Road 29N43, 5.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1889 Comment
  JEPS59876  Sarcobatus vermiculatus W. L. Jepson 1918-8-4 7805 Lassen Horse Lake 1554 Comment
  UCSB61641  Sarcobatus vermiculatus True, Gordon 1936-6-21 Lassen Honey Lake Valley 1219 Comment
  UC70391  Sarcodes sanguinea Milo S. Baker 1890-4 Lassen Honey Lake Valley Comment
  RSA300132  Schedonorus arundinaceus J. T. Howell, Gordon H. True 1973-8-1 50185 Lassen Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  CAS-BOT-BC111301  Schoenoplectus acutus var. occidentalis Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-20 1487 Lassen Long Creek, 1 mile south of Doyle Comment
  CAS-BOT-BC383111  Schoenoplectus acutus var. occidentalis Andrew Townesmith; Karen M. Meyer 2007-7-22 842 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  RSA0009705  Schoenoplectus acutus var. occidentalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC93678  Schoenoplectus pungens var. longispicatus Lowell Ahart; John Dittes 2005-6-2 11975 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
  CHSC63613  Schoenoplectus subterminalis Vernon H. Oswald; Helen Ost, John Ost, M. L. Mini 1994-8-6 6446 Lassen Caribou Wilderness from the Hay Meadow trailhead N of Chester, at an un-named lake on the S edge of the trail between Hidden Lakes and Long Lake. 2103 Comment
  JEPS28334  Scirpus congdonii George W. Gillett 1957-8-9 1011 Lassen near Summit Lake (East Fork Hat Creek); Lassen Volcanic National Park, East Fork Hat Creek 2026 Comment
  UC2198  Scirpus pungens J. Burtt Davy Jun 17 1897-Jun 24 1897 3286 Lassen sloughs Susan River (Honey Lake Valley); , Honey Lake Valley Comment
  UCD55296  Scrophularia desertorum Ellen Dean; Gary Schoolcraft 2006-5-16 3117 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
  SDSU11023  Scrophularia lanceolata D. F. Howe 1962-8-2 3923 Lassen Warner Mtns, Modoc National Forest. 1829 Comment
  CAS-BOT-BC5845  Scutellaria holmgreniorum Noel Herman Holmgren; Patricia K. Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy 395 via Rye Patch Canyon 1580 Comment
  CAS-BOT-BC214262  Scutellaria nana G. Schoolcraft 1986-6-18 1630 Lassen S. side of Smoke Creek between Shinn & Smoke Creek Ranches 1493 Comment
  CAS-BOT-BC214269  Scutellaria nana John Thomas Howell 1934-6-10 11879 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  SEINET13947832 Image available Scutellaria nana G. Schoolcraft 1986-1 1641 Lassen S of Observation Peak ca 1.5 mi E of Post Camp; 5500 ft alt., T33N, R16E, SEC10 1676 Comment
  CAS-BOT-BC240081  Secale cereale R. E. Frenkel 1964-7-12 664 Lassen On California Hwy. 299, 1.5 miles west of Bieber 1249 Comment
  CAS-BOT-BC240085  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak Comment
  CAS-BOT-BC240087  Secale cereale David D. Keck; J. Clausen 1935-6-24 3750 Lassen 2 mi. S. of Ravendale 1464 Comment
  UCD92548  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak. Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  UC1063252  Senecio aronicoides A. Simontacchi 1940-5-28 769 Lassen 9.3 mi nw Crater Lake; Halls Flat Quad. 1752 Comment
  CHSC114299  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 Lassen South of Adin; Hwy. 139 at Milepost 58. On both sides of the road. Comment
  CHSC60327  Senecio fremontii var. fremontii Mary Ann Showers 1992-6-28 2700 Lassen Lassen Volcanic National Park. Cliffs west of Soda Lake and below tarn at base of north facing cirque between Pilot Pinnacle and Mt. Diller. 2438 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
  UC831836  Senecio hydrophiloides A. A. Heller 1938-6-23 15192 Lassen about 3 mi s Westwood Comment
  CHSC30613  Senecio integerrimus L. Maslin 1975-7-1 10 Lassen At the foothill of n Black Mtn. near Eagle Lake Field Station. 1981 Comment
  HSC63728  Senecio integerrimus Teresa Prendusi 1980-4-30 Lassen NE of Snowstorm Ranch near Kalo Rd., Ravendale; near railroad tracks 1585 Comment
  JEPS94603  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1997-5-27 8508 Lassen on Forest Route 38N04 0.3 mi e Hwy. 139 (n of Susanville (between Hwy 139 near Willow Creek Guard Station and Coyote Flat), between the road and a small creek) 1560 Comment
  OBI76982  Senecio integerrimus var. exaltatus Anthony Baniaga 2011-6-20 384 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 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
  SJSU13986  Senecio integerrimus var. exaltatus N. A. Hopkins 1988-5-16 1399 Lassen by Scott Valley Rd W of Long Valley Cr 4 mi N of Hwy 70 1524 Comment
  CAS-BOT-BC363984  Senecio integerrimus var. major John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49176 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC364153  Senecio serra B. Bartholomew; B. Anderson 1988-7-22 4496 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  SFV10993  Senecio serra J. Turner, F. M. Ball (1192) 1962-7-13 s. n. Lassen Laufman Public Camp, 3 miles off Highway 395 from Milford near Honey Lake. 1494 Comment
  CHSC104781  Setaria viridis Lowell Ahart; John Dittes 2010-8-31 17139 Lassen On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley. 1276 Comment
  UC1143016  Sidalcea glaucescens August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn; Lassen National Forest, nw of Black's Mtn 1706 Comment
  UC585099  Sidalcea glaucescens E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1778 Lassen 4 mi s Ravendale (slope of creek at n end of Secret Valley); n end Secret Valley, s of Ravendale 1371 Comment
  CAS-BOT-BC205780  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC66729  Sidalcea oregana subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-8-1 8114 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  POM253297  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 1 mile East of Westwood. 1524 Comment
  UC725938  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen a mi e Westwood; e of Westwood 1524 Comment
  NY54618  Sidalcea oregana var. maxima N. H. Holmgren 1980-7-3 9479 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. highway 395, 16 km (10 mi) airline distance northwest of Termo 1620 Comment
  NY746728  Sidalcea oregana var. maxima A. Tiehm 1988-6-2 11704 Lassen East side of Snowshoe [Snowstorm?] Mountain, 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway 1402 Comment
  RSA339988  Sidalcea oregana var. maxima Noel Holmgren, Patricia K. Holmgren 1980-7-3 9479 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) airline distance northwest of Termo. 1620 Comment
  CHSC57275  Silene bernardina Mary Meyer 1980-7-22 Lassen Downhill 100 yds west from sharp bend in road on top going to Lookout Tower. 2316 Comment
  SBBG71651  Silene bernardina S. W. Hutchinson -Jun-1925 72 Lassen near Eagle Lake 1554 Comment
  CDA24107  Silene douglasii T. C. Fuller 1963-7-15 10898 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  UC1137882  Silene lemmonii H. P. Hagge 1929-9-17 36 Lassen Logan Mtn. Eagle Lake Quad., Logan Mtn. 1828 Comment
  UC1258485  Silene menziesii G. Schoolcraft 1980-7-28 336 Lassen s Blue Lake; s of Blue Lake 2072 Comment
  SEINET8223955  Silene menziesii Richard R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  CAS-BOT-BC389545  Silene nuda M. S. Taylor; B. Hammond 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass 1432 Comment
  RSA123274  Silene nuda E. Sawyer 1935-6-27 223 Lassen Long Valley. 1311 Comment
  CHSC106672  Sisymbrium altissimum B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC91318  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
  RSA716268  Sisymbrium altissimum L. Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction. 1460 Comment
  SEINET11987253  Sisymbrium altissimum J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4135 Lassen 65 mi S of Alturas, along edge of hwy #395 Comment
  UCD115496  Sisymbrium altissimum P. B. Kennedy 1927-9-1 s.n. Lassen Janesville. Comment
  RSA123140  Sisyrinchium bellum L. R. Short, William Gansberg 1936-6-11 S- 430 Lassen Burgess Spr. Exp. Range 1731 Comment
  CDA38568  Sium suave T. C. Fuller 1959-7-7 4732 Lassen Highway 395, 7.5 miles east of Susanville. 0 Comment
  NY821295  Solanum physalifolium J. T. Howell 1973-8-1 50146 -A Lassen Near Susanville, Diamond Range 1585 Comment
  CAS-BOT-BC365368  Solidago elongata Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  UCD107501  Solidago spectabilis Tim Kuhn 2006-1 47 Lassen Eagle Lake Ranger District. Comment
  CAS-BOT-BC365752  Solidago spectabilis Lassen 1927 G. S. Crew 1927-7-15 82 Lassen Lassen National Forest. Feather Lake 1737 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
  JEPS97325  Solidago velutina subsp. californica Vernon H. Oswald 1995-8-21 7207 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC1137572  Solidago velutina subsp. californica A. Simontacchi 1940-7-5 927 Lassen 6.3 mi ene Ebey Lake; Halls Flat Quad. Comment
  SBBG3122  Sorbus sitchensis H. and M. Dearing 1939-6-12 3644 Lassen S of Lassen Comment
  CHSC96734  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  POM119382  Sparganium eurycarpum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC213214  Sphaeralcea grossulariifolia P. Monnet 1913-7-1 803 Lassen Hot Spring Peak 1524 Comment
  UC2042785  Sphaeromeria cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7192 Lassen Skeedaddle Mountains on NE side of Honey Lake, on S side of Hot Springs. Comment
  UCD136228  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 1645 Comment
  CAS-BOT-BC149628  Spiraea douglasii Ray Hanson 1954-8-23 s.n. Lassen Lassen Park, near Jakey Lake 2112 Comment
  UC729643  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen between Grassy Lake and Snag Lake; Mt. Lassen National Park Comment
  POM91114  Spiraea douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC61074  Spiranthes porrifolia Vernon H. Oswald 1993-8-3 5754 Lassen Cooper Swamp located E of Siver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  UC845562  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen meadow about 1 mi e Westwood 1524 Comment
  CAS-BOT-BC60961  Stanleya pinnata var. pinnata G. Schoolcraft 1989-5-31 1880 Lassen Near intersection of Skedaddle Ranch and Wendel Roads. 1249 Comment
  CDA25155  Stanleya viridiflora L. Bass 1982-7-25 Oct- 82 Lassen Near Karlo, about 12 miles north of Litchfield. Comment
  CHSC75482  Stanleya viridiflora Vernon H. Oswald; Lowell Ahart 1999-6-9 9744 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  CHSC4785  Stellaria longipes var. longipes R. Carter 1967-6-29 574 Lassen In Murrer's Meadow, 100 yds. SE of dam. Comment
  JEPS51139  Stellaria longipes var. longipes Brown and Wieslander 1922-7-18 52 Lassen Martin Springs; Eagle Lake Comment
  CHSC5211  Stenotus acaulis J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  JEPS94459  Stenotus acaulis Vernon Oswald and Lowell Ahart 1997-6-24 8630 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
  CDA18319  Stephanomeria exigua G. D. Barbe 1974-8-2 1930 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC375307  Stephanomeria exigua subsp. coronaria John Thomas Howell 1934-6-10 11847 Lassen 4 miles south of Omira Comment
  RSA252459  Stephanomeria exigua subsp. coronaria R. F. Thorne, C. W. Tilforth 1969-9-6 39261 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  UC768667  Stephanomeria exigua subsp. coronaria Robert F. Hoover 1940-10-1 4651 Lassen Johnstonville Comment
  CAS-BOT-BC375595  Stephanomeria lactucina Margaret Williams; Steven Williams 1974-7-26 74 -L-12 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC205201  Stephanomeria pauciflora James R. Shevock; Barbara Ertter 1986-7-20 11738 Lassen Northern Sierra Nevada. Along U.S. highway 395 at Red Rock Road 1500 Comment
  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
  JEPS126469  Stipa thurberiana Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -039 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  SEINET10448890  Streptanthus cordatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 470 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  SEINET10448891  Streptanthus cordatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 514 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along ridge and in sandy wash. 1402 Comment
  UCD138352  Stuckenia pectinata Verne Grant; Irving Schneider 1947-8-1 8244 Lassen East end of Tule Lake. Comment
  CHSC48447  Swertia albicaulis var. albicaulis Vernon Oswald 1986-5-28 2060 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  CHSC64843  Swertia albicaulis var. albicaulis Vernon H. Oswald 1995-6-26 6920 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CAS-BOT-BC269699  Symphoricarpos mollis G. Schoolcraft 1997-6-24 2604 Lassen Doyle Grade W of Doyle 1706 Comment
  CAS-BOT-BC237073  Symphoricarpos rotundifolius John Thomas Howell 1977-6-22 52396 Lassen Northeast of Susanville on road to Eagle Lake, Sierra Nevada Comment
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  SD211535  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen circa 3/4 mile East-Northeast of Beckwourth Pass at end of old crumbling paved road 1524 Comment
  JEPS103195  Symphyotrichum bracteolatum G. Schoolcraft 1996-9-9 2583 Lassen Lower end of Willow Creek below petroglyphs 1310 Comment
  JEPS93963  Symphyotrichum campestre Vernon H. Oswald 1998-9-14 9623 Lassen Windy Hollow on the w side of Highway 44 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44 1737 Comment
  CAS-BOT-BC97606  Symphyotrichum campestre Margaret Williams 1974-7-27 74 -L-67 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC2027325  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen National Forest. Caribou Wilderness; N of Long Lake. Red Cinder quadrangle. Comment
  CHSC76083  Symphyotrichum frondosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8232 Lassen On the strand of Eagle Lake, west of Highway 139, near the south end of the lake and highway, Eagle Lake. 1554 Comment
  JEPS118448  Taraxacum officinale Lowell Ahart, John Dittes 2011-6-20 17490 Lassen About 30 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
  CAS-BOT-BC376899  Taraxacum officinale 1927-6-19 17 Lassen Lassen National Forest. Norval Flat 1747 Comment
  UC1542935  Taraxia subacaulis G. Schoolcraft 1987-5-19 1703 Lassen Ash Valley RNA 1554 Comment
  CHSC112988  Taraxia tanacetifolia Lowell Ahart; John Dittes 2013-7-23 18885 Lassen About 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC27714  Tarax