Search Results — 2000 specimen records retrieved (1606 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78036  Abies concolor John Thomas Howell 1976-7-19 51966 Lassen Gold Run Creek southwest of Susanville 1386 Comment
  CHSC84856  Abies concolor L. P. Janeway; B. Castro 2003-10-5 8002 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
  UCR64818  Abies concolor Frank C. Vasek 1976-9-3 760903- 02 Lassen 5 mi west of Susanville, north of State Hwy 44 at a point 0.25 mi north of junction with State Hwy 36 Comment
  CAS-BOT-BC330610  Acer glabrum var. glabrum Clare B. Hardham 1969-8-28 17438 Lassen Sierra Nevada. West of Janesville. Comment
  CAS-BOT-BC330611  Acer glabrum var. glabrum John Thomas Howell; Gordon H. True 1973-8-1 50152 Lassen Sierra Nevada. Gold Run Creek road S of Susanville, Diamond Range 1584 Comment
  SEINET7893918  Acer macrophyllum E. Brooks 1927-5-9 s.n. Lassen 80 miles N of Reno. Comment
  CAS-BOT-BC28648  Achillea millefolium Louella Bass 1973-5-29 72 Lassen Elysian Valley 1325 Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  JEPS36915  Achillea millefolium Brown and Wieslander 1922-7-30 18 Lassen meadow near Martin Springs; Eagle Lake Comment
  UC1024644  Achnatherum Leo Whitney 1933-7-1 2214 Lassen Slate Creek, ca. 8 mi nw Eagle Lake; Lassen National Forest Comment
  UCD50374  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  UCD55573  Achnatherum hymenoides Beecher Crampton 1964-6-27 7090 Lassen Ca. 8-9 miles NE of Susanville. 1828 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
  UC1024805  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-23 3288 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 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
  UCD32655  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2051 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51169  Achnatherum occidentale subsp. pubescens A. L. Hormay 1934-6-30 s.n. Lassen on Harvey Mountain, Lassen National Forest. 2133 Comment
  CHSC29880  Achnatherum thurberianum Robin L. Ondricek 1978-6-8 47 Lassen Ridge E of Lower Dry Lake. 1798 Comment
  UC584332  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2226 Lassen 6 mi s Ravendale 1660 Comment
  UC593456  Achnatherum thurberianum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1744 Lassen gully on mountain above Red Rock 1420 Comment
  UCD32677  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen Lassen County, 7 miles north of Madeline, along US highway 395, roadside. 1524 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CHSC91301  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2005-6-2 11970 A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  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
  JEPS60355  Aconitum columbianum Brown and Wieslander 1922-7-30 19 Lassen Eagle Lake, Martin Springs Comment
  CAS-BOT-BC412871  Aconogonon davisiae Brighton C. Cain 1925-8-25 127 Lassen Horse trail from summit of Mt. Lassen to Drakesbad, Mt. Lassen Volcanic National Park Comment
  CDA6765  Acroptilon repens T. C. Fuller 1962-8-29 9486 Lassen Road to Adin, 1 miles east of Lookout, Big Valley. 0 Comment
Read comments
Jun 24 2009
  CAS-BOT-BC391609  Actaea rubra John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49411 Lassen Elysian Valley, west of Janesville 1325 Comment
  UCD51460  Aegilops cylindrica Andy Babcock 1981-6-10 s.n. Lassen Comment
  CHSC65107  Agastache parvifolia Vernon H. Oswald 1995-7-24 7132 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  JEPS28682  Agastache parvifolia George W. Gillett 1957-7-26 909 Lassen along e shore Butte Lake (Butte Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Butte Lake 1859 Comment
  SEINET10499368  Agastache parvifolia Mary Merello 1993-6-28 Merello 746 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  SEINET11261375  Agastache parvifolia Robert L. Johnson, Mikel R. Stevens 2015-7-10 3929 Lassen 5.6 rd miles west of jct with Hwy 395 beginning on Dawn Dr, then continuing on road to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1910 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
  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
  CHSC59071  Agoseris glauca var. monticola Vernon Oswald; Lowell Ahart 1992-8-25 5181 Lassen Lassen Volcanic National Park. Near Grassy Creek at the S end of Snag Lake, at the junction of Snag Lake-Butte Lake and Snag Lake-Horseshoe Lake trails. 1865 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
  CHSC91310  Agoseris heterophylla Lowell Ahart; John Dittes 2005-6-1 11885 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
  CAS-BOT-BC433230  Agoseris heterophylla K. L. Chambers; Peter G. Dorris 1963-5-11 s.n. Lassen Red Rock Road, just east of Hwy. 395 (and just w. of Nevada State Line), ca. 10 mi. n. of Hwy. 70 junction, and s. of Constantia. Comment
  UC1924573  Agoseris heterophylla var. heterophylla Debra Valov 2006-5-29 2006023 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  UCD107495  Agoseris monticola Tim Kuhn 2006-7-18 41 Lassen Eagle Lake Ranger District.. Comment
  UC1776674 Image available Agoseris parviflora G. Schoolcraft 1994-7-7 2365 Lassen About 1 miles west of Boot Lake 219 Comment
  SEINET3915755  Agropyron cristatum Paul Gallian, David B. Dunn 1971-6-2 484 Lassen 5 mi. S of Milford near Honey Lake on U.S. Hwy. 395.; 0 1250 Comment
  CDA1684  Agropyron cristatum subsp. pectinatum G. D. Barbe 1974-8-2 1919 Lassen Hallelujah Junction, US 395 at Hwy 70, northwest corner. Comment
  UC773966  Agrostis exarata L. R. Short 1936-8-21 S- 499 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1798 Comment
  RSA299277  Agrostis idahoensis J. T. Howell, Gordon H. True 1973-8-1 50232 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2134 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
  UC60211  Agrostis stolonifera J. Burtt Davy Jun 17 1897-Jun 24 1897 3307 Lassen Tule Confederacy Honey Lake Valley Comment
  SEINET7594432 Image available Agrostis variabilis George W. Gillett 1957-1 927 Lassen Lassen Volcanic National Park, Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake. Dry wash 100 yards above trail junction. 1859 Comment
  UC55670  Alisma plantago-aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3337 Lassen Susan River Honey Lake Valley 1219 Comment
  UC985649  Alisma plantago-aquatica Verne Grant and Irving Schneider 1947-9-6 8394 Lassen near Wendel (w of Fleming Ranch Headquarters) Comment
  CHSC29882  Allium acuminatum Robin L. Ondricek 1978-6-6 36 Lassen One me S of Colley Point Overlook on Hwy 139. 1670 Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 Comment
  CAS-BOT-BC459569  Allium acuminatum G. Schoolcraft 1986-5-19 1574 Lassen North slope of Bald Mtn., Susanville 1280 Comment
  CAS-BOT-BC459570  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen Along Skedaddle Ranch Road near stateline, Susanville 1584 Comment
  CAS-BOT-BC459571  Allium acuminatum H. C. Cantelow 1940-5-31 s.n. Lassen 4 miles east of Mc Arthur, Highway 299 Comment
  JEPS94130  Allium anceps Vernon H. Oswald and Lowell Ahart 1998-5-22 9102 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
  UC1133850  Allium lemmonii A. Simontacchi 1940-6-4 805 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC470922  Allium lemmonii G. Schoolcraft 1993-6-10 2287 Lassen Approx. 9.5 miles east of Madaline on Clark Valley Road 1828 Comment
  POM110002  Allium platycaule Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  SEINET3878902  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 mi W of Madeline on rd. from Adin.; 0 1676 Comment
  CAS-BOT-BC474075  Allium platycaule Clare B. Hardham 1971-7-22 s.n. Lassen Diamond Moutain 2346 Comment
  SEINET3878885  Allium platycaule D. W. McNeal 1983-6-6 2844 Lassen In a dry wash below Horse Lake Rd. (Lassen Co.Rd #536), 5.3 mi NE of the jct. of Hwy #139.; 0 Comment
  CAS-BOT-BC476625  Allium tolmiei B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6563 Lassen U.S. Hwy. 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield. 1330 Comment
  CHSC68894  Allophyllum integrifolium Vernon Oswald; Lowell Ahart 1997-6-24 8604 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). Bordering the stream. 1655 Comment
  RSA129212  Alopecurus aequalis H. S. Yates 1936-8-12 6082 Lassen McKenzie Meadow: Susanville 1524 Comment
  UCD55830  Alopecurus aequalis L. Whitney 1933-8-4 2200 Lassen Lassen National Forest, ca. 8 miles northwest of Eagle Lake, Slate Creek. 1920 Comment
  CHSC117285  Alopecurus carolinianus Lowell Ahart; John Dittes 2016-7-15 21214 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
  CAS-BOT-BC138010  Alopecurus geniculatus Stuart K. Harris 1960-6-23 21410 Lassen Bed of Poison Lake. 1645 Comment
  CAS-BOT-BC138011  Alopecurus geniculatus John Thomas Howell 1934-7-7 12464 Lassen Near Feather Lake. Comment
  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
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley 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
  JEPS93815  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1998-6-4 9144 Lassen s of Constantia (at parking area at end of spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  JEPS78111  Amaranthus blitoides Gary W. Zamzow 1972-7-18 86 Lassen beside Highway 395, 3 mi n Hallelujah Junction 1371 Comment
  JEPS95745  Ambrosia acanthicarpa Vernon H. Oswald and L. Ahart 1995-8-14 7191 Lassen T33N R14E SW1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville 1645 Comment
  UC1118423  Ambrosia acanthicarpa C. W. Hanks 1934-9-25 86 Lassen floor of, (near Plumas National Forest) Long Valley; Sierraville Quad., Plumas National Forest 1371 Comment
  CAS-BOT-BC142542  Amelanchier utahensis George W. Gillett 1957-7-26 903 Lassen Butte Lake, point of rocks west of outlet and above trail - Lassen Volcanic National Park 1844 Comment
  UC773882  Amelanchier utahensis L. R. Short 1936-5-22 S- 349 Lassen Burgess Spring Experiment Range; Forest Lassen 1859 Comment
  CHSC5244  Amphiscirpus nevadensis 1946-6-25 Lassen Eagle Lake. 1554 Comment
  CAS-BOT-BC28271  Amphiscirpus nevadensis William Anderson 1963-6-25 s.n. Lassen Dakin unit, Honey Lake Refuge. Comment
  SEINET10455819  Amsinckia menziesii Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2582 Lassen 6 mi S of Adin; along CA Hwy 139 right-of-way; in basalt-clay, grassy road bank; Artemesia-Juniper assoc. 1372 Comment
  UC198379  Amsinckia tessellata var. tessellata J. G. Lemmon Lassen Sierra and Long Valleys Comment
  CHSC5194  Antennaria argentea A. Santos 1946-6-14 Lassen Spalding's, Eagle Lake. 1558 Comment
  SEINET3145644  Antennaria argentea M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  SEINET2029685 Image available Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds about 12 miles north of Fall River Mills (in Shasta County) on Fall River 1372 Comment
  UCD128922  Antennaria flagellaris G. Schoolcraft 1981-5-27 0456 Lassen Hayden Hill. 1737 Comment
  CAS-BOT-BC69138  Antennaria geyeri Milo S. Baker 1894-7-12 s.n. Lassen Pine Creek Comment
  CHSC68841  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1997-7-24 8591 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  CHSC86973  Antennaria geyeri L. P. Janeway 2001-6-20 7206 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
  HSC82198  Antennaria luzuloides Thomas W. Nelson, Jane P. Nelson 1980-7-6 6053 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS19756  Antennaria luzuloides Rimo Bacigalupi with S. Galen Smith 1957-6-28 5996 Lassen 3.6 mi n of Madeline 1645 Comment
  RSA715539  Antennaria luzuloides L. Ahart 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1137668  Antennaria luzuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 241 Lassen below Patterson R. S.; Lassen National Forest 1737 Comment
  UC506930  Antennaria luzuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 241 Lassen below Patterson R. S.; Lassen National Forest 1737 Comment
  JEPS33976  Antennaria rosea Brown and Wieslander 1922-7-23 58 Lassen Martin Sprs.; Eagle Lake Comment
  UC1583976  Antennaria rosea G. Schoolcraft 1990-7-2 2103 Lassen w of Cold Spring Mtn. 1645 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
  UC885063  Antirrhinum vexillocalyculatum subsp. breweri C. L. Hitchcock 1940-5-26 6597 a Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  JEPS114859  Apera interrupta Lowell Ahart, John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CHSC6221  Apocynum androsaemifolium W. Vinyard 1946-6-17 Lassen Eagle Lake, summit of Mt. Fredonyer. 2349 Comment
  CDA39744  Apocynum androsaemifolium Taylor 1938-7-18 s.n. Lassen Susanville. 0 Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  CAS-BOT-BC392213  Aquilegia formosa Lassen 1927 G. S. Crew 1927-7-15 79 Lassen Lassen National Forest. Bogard R.S. 1725 Comment
  SEINET10539684  Arabis Paul Gallian, David B. Dunn 1971-6-2 Gallian 496 Lassen Approx 22 mi s of adin on state hwy 139; in basalt. Assoc: juniper, artemisia. 1646 Comment
  SEINET10480742  Arabis drummondii Jeffrey Huber 1971-6-2 Huber 125 Lassen Ca 30 mi n of susanville, on state hwy 139, in basatl. Pinus-artemesia-juniper Association. 1646 Comment
  NY112494  Arabis holboellii var. pinetorum R. C. Rollins 1981-5-30 81164 Lassen Gold Run Road, 9 miles S of Susanville Comment
  HSC25977  Arabis holboellii var. retrofracta D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19270 Lassen Harvey Valley near Cone Springs Comment
  RSA716275  Arabis holboellii var. retrofracta L. Ahart 2005-6-2 11926 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  JEPS53155  Arabis rectissima var. rectissima Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  NY119565  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  NY119617  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83226 Lassen Above Laufman Ranger Station, Plumas National Forest, 4.5 miles E of U.S. Hwy. 395 Comment
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  SEINET2471272  Arceuthobium abietinum R. L. Mathiasen 2008-9-15 2008 -27 Lassen 12.8 km S. of jct. of Westwood Road on State Route 44 1720 Comment
  CAS-BOT-BC409988  Arceuthobium campylopodum Louella Bass 1973-5-29 EU 48 Lassen Elysian Valley 1325 Comment
  JEPS107301  Arceuthobium campylopodum Lowell Ahart, John Dittes 2005-6-1 11894 Lassen On the west side of Scott Road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.9 miles (air) northwest of Hallelujah Junction 1465 Comment
  SEINET3239995  Arceuthobium campylopodum R. L. Mathiasen 2010-1 1032 Lassen 14.4 km W of Susanville on Rte. 36. 1460 Comment
  CAS-BOT-BC45896  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45902  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45904  Arctostaphylos nevadensis M. S. Jussel 1931-9-6 s.n Lassen Sulphur Works, Mt. Lassen 2133 Comment
  CHSC25747  Arctostaphylos patula subsp. patula John Steiner 1977-6-14 73 Lassen Lassen Volcanic National Park. 250 m NE Manzanita Lake and 250 m E Lassen Park boundry. 1768 Comment
  POM101445  Arenaria congesta Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1125789  Arenaria congesta var. congesta A. Simontacchi 1940-6-12 847 Lassen 3.5 mi sse Blaks Mtn.; Lassen National Forest,Halls Flat Quadrangle Comment
  JEPS100348  Arenaria kingii var. glabrescens Dean W. Taylor 2001-6-28 17816 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  JEPS94556  Arenaria kingii var. glabrescens Vernon Oswald and Lowell Ahart 1997-6-24 8633 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
  CHSC7771  Argemone munita Beverly J. Wise 1969-6-4 73 Lassen North edge of Milford, roadside, Hwy 395. 1310 Comment
  UC1037334  Argemone rotundata Leo Whitney 1934-8-5 1959 Lassen 10 mi se of Susanville (Harvey Lake Valley); Harvey Lake Valley 1402 Comment
  CHSC107316  Arnica chamissonis 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
  CHSC60873  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1993-7-8 5665 Lassen Pittville Rd. (Lassen 111, 36N01) 2.4 mi N of Hwy. 44, on the NE edge of Poison Lake. 1705 Comment
  CHSC66713  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1996-8-1 8109 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  JEPS114706  Arnica chamissonis Lowell Ahart, John Dittes 2008-6-20 14902 Lassen In a wet meadow, about 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS35877  Arnica chamissonis C. S. Robinson 1927-7-15 77 Lassen Feather Lake, sw Lassen Co Feather Lake 1737 Comment
  JEPS35887  Arnica chamissonis Brown and Wieslander 1922-7-30 26 Lassen Martin Springs , Eagle Lake Comment
  UC1533139  Arnica chamissonis Gary Schoolcraft 1986-8-19 1667 Lassen Said Valley Res. 1630 Comment
  HSC12534  Arnica chamissonis M. S. Baker 28 Jul [year missing] Lassen South of Eagle Lake Comment
  UC36753  Arnica dealbata M. S. Baker and Frank Nutting 1894-7-28 Lassen mts s Eagle Lake Comment
  JEPS35883  Arnica mollis Frances D. Payne 1929-7-12 99 Lassen Upper Silver Creek, se extremity of Warner Mts Warner Mountains, Upper Silver Creek 2499 Comment
  CAS-BOT-BC85029  Arnica sororia Elmer I. Applegate 1897-6-3 866 Lassen Madeline Plains Comment
  UCD129144  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  SEINET263091  Artemisia arbuscula Jennifer Lyman 1994-4-23 4243 Lassen Lassen County: along Highway 395, ca. 25 miles N. of Susanville. 1433 Comment
  CAS-BOT-BC85002  Artemisia arbuscula subsp. arbuscula James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-20 4117 Lassen 81 miles south of Alturas in Lassen County. Comment
  CAS-BOT-BC85004  Artemisia arbuscula subsp. arbuscula John Thomas Howell 1934-7-6 12455 Lassen Harvey Valley Comment
  UCD129268  Artemisia cana subsp. bolanderi W. Robert Powell 1985-7-30 3523 Lassen 16 air miles SSE of Adin (Modoc Co.), 0.9 mile SSE of Hayden Hill L.O., 0.4 mile west of Daisy Dean Spring. East slope, 3 percent. 1676 Comment
  SEINET10722478  Artemisia ludoviciana subsp. ludoviciana Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 134 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 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
  CHSC42148  Artemisia tridentata C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi SE of Madeline and 9 mi NE of Termo. 2194 Comment
  CAS-BOT-BC97327  Artemisia tridentata subsp. tridentata R. K. Gierisch; D. H. Esplin 1969-8-27 3599 Lassen Lassen National Forest 1706 Comment
  CHSC110309  Artemisia tridentata subsp. tridentata L. P. Janeway; B. Castro 2012-7-2 10927 Lassen Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road. 1473 Comment
  CHSC66846  Artemisia tridentata subsp. tridentata Vernon H. Oswald 1996-10-3 8294 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. 1402 Comment
  RSA758317  Artemisia tridentata subsp. tridentata Doug Goldman 2004-11-5 2935 Lassen To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake 1256 Comment
  UC1136978  Artemisia tridentata subsp. tridentata George A. Fisher and Irwin H. Johnson 1933-9-8 F 282 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1706 Comment
  SEINET3391559  Artemisia tridentata subsp. tridentata E. D. McArthur 1982-1 EDM- 1357 Lassen NW of Janesville. @ Jct of Co. Ros 205 & 219 Comment
  CHSC77188  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  POM76156  Asclepias cordifolia Marcus E. Jones 1897-7-2 s.n. Lassen Susanville 1524 Comment
  CHSC60269  Asclepias fascicularis P. V. Caldwell 1972-6-24 298 Lassen Rocky beach off road to beach near the tunnel at Eagle Lake B. S. Comment
  RSA757476  Aster ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  CHSC66717  Aster elatus Vernon H. Oswald; Lowell Ahart 1996-8-1 8120 A Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  UCD105587  Astragalus Grady L. Webster 1989-5-13 7720 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UCR73175  Astragalus G. L. Webster 1989-5-13 7710 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  CAS-BOT-BC177324  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles N WW of Termo 1615 Comment
  CHSC117759  Astragalus agrestis Virginia Dains; Joanne Crawford 2016-7-13 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km northwest of Termo, 4.7 km west of Highway 395, 150 meters south of agricultural fields. 1617 Comment
  RSA0006693  Astragalus agrestis H. D. Ripley, R. C. Barneby 1944-5-30 5976 Lassen North of Termo; 1662 Comment
  JEPS107970  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
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  NY791376  Astragalus andersonii W. W. Eggleston 1911-5-29 6734 Lassen Vicinity of Doyle Station 1290 Comment
  SEINET10450638  Astragalus andersonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17802 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine alon ghigh ridge and in sandy wash. 1402 Comment
  UC1483838  Astragalus anxius G. Schoolcraft 1980-8-14 307 Lassen w of Madeline; Ash Valley 1548 Comment
  CAS-BOT-BC178767  Astragalus canadensis var. brevidens Leo Whitney 1934-7-4 2073 Lassen Sand dunes near north shore of Eagle Lake, Lassen N.E. 158 Comment
  CHSC5278  Astragalus canadensis var. brevidens 1944-6-28 Lassen Eagle Lake. 1615 Comment
  CHSC118474  Astragalus canadensis var. brevidens Don Lepley 2016-9-17 6 /28/2015 Lassen Eagle Lake Ranger District. Southwest corner of Eagle Lake, roughly a half-mile northeast of entrance of Christie Campground, near end of rough road past Eagle Lake Resort. UTM 683577 x 4493277 1559 Comment
  CDA26651  Astragalus curvicarpus T. C. Fuller 1965-6-3 13607 Lassen 1.3 miles west-northwest of Janesville. 0 Comment
  RSA111043  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-15 5752 Lassen NE of Litchfield. 1234 Comment
  CHSC60738  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-6-14 5519 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (RD. 518, 33N89). 1566 Comment
  CHSC60899  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Edge of woods between the road and railroad. 1709 Comment
  UC1609292  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-6-14 5519 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd.518,33N89), among low dunes on upper beach btwn road and lake); w shore Eagle Lake 1566 Comment
  UCD55155  Astragalus curvicarpus var. curvicarpus Ellen Dean 2006-5-15 3043 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  CAS-BOT-BC182952  Astragalus filipes Lassen 1927 G. S. Crew 1927-7-15 74 Lassen Lassen National Forest 1725 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
  NY813074  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km south of Doyle on U.S. Highway 395 1430 Comment
  UC13367  Astragalus filipes M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC81430  Astragalus filipes T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC182956  Astragalus filipes Alice Eastwood; John Thomas Howell 1940-6-16 8353 Lassen Constantia Comment
  CAS-BOT-BC186864  Astragalus gibbsii Doris Kildale Gillespie 1930-5-12 9348 Lassen Between Susanville and Leavitt Lake Comment
  RSA121850  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley 1341 Comment
  UC84396  Astragalus gibbsii T. B. 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC186863  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1943-6-13 5692 Lassen South of Milford 1432 Comment
  CAS-BOT-BC186912  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC186916  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  POM24454  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA0006769  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 s.n. Lassen West of Susanville. Comment
  POM23664  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC64785  Astragalus iodanthus var. diaphanoides Vernon H. Oswald 1995-5-24 6763 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1249 Comment
  CAS-BOT-BC229047  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  RSA0074201  Astragalus lemmonii L. T. Stephenson 1897-09 6448 Lassen Chat, Sierra Valley Comment
  CHSC12428  Astragalus lentiginosus Robert W. Severin 1969-6-25 54 Lassen 2/3 mi. ne E.L.B.S. on edge of road. 1577 Comment
  CAS-BOT-BC187154  Astragalus lentiginosus var. chartaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49230 Lassen On Highway 395, 7 miles southeast of Milford 1280 Comment
  NY675579  Astragalus lentiginosus var. floribundus A. Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile north of Wendel 1231 Comment
  UC1128892  Astragalus lentiginosus var. lentiginosus A. Simontacchi 1940-6-8 844 Lassen Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest) Comment
  POM45581  Astragalus malacus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  JEPS107291  Astragalus pulsiferae var. pulsiferae Lowell Ahart, John Dittes 2005-6-1 11871 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  RSA0006848  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass. 1494 Comment
  RSA0006849  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 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
  CAS-BOT-BC194094  Astragalus purshii var. purshii Clare B. Hardham 7446 Lassen Diamond Peak 2286 Comment
  RSA110893  Astragalus purshii var. purshii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5741 Lassen West of Susanville. 1311 Comment
  JEPS94605  Astragalus purshii var. tinctus Vernon H. Oswald and Lowell Ahart 1997-5-27 8517 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  SEINET10490027  Astragalus purshii var. tinctus Paul Gallian, David B. Dunn 1971-6-2 Gallian 497 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc juniper artemisia. 1646 Comment
  UC1299224  Astragalus purshii var. tinctus Freed W. Hoffman 1946-6-8 913 Lassen Highway 395 Dry Creek (Dry Creek) Comment
  SEINET10490007  Astragalus whitneyi var. confusus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17770 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc. 1372 Comment
  CHSC5284  Astragalus whitneyi var. siskiyouensis V. Holt 1945-6-1 Lassen Eagle Lake. Comment
  CHSC92759  Astragalus whitneyi var. siskiyouensis L. P. Janeway 2005-7-4 8469 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  NY701850  Astragalus whitneyi var. siskiyouensis B. J. Ertter 1987-6-16 7183 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 Comment
  CHSC71080  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1998-5-22 9130 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Along a streamlet. 1463 Comment
  SEINET5344853  Atriplex canescens S. Massed, Jared Jaggers, D. Mathews 2011-10-24 Seeds of Success. NV 030 . Carson Lassen Northeast of Doyle. On the Northern slopes of Fort Sage Mountains. 1291 Comment
  CHSC36483  Atriplex confertifolia Margaret E. Halloran 1982-6-2 6 Lassen Ravendale Rd e of Horse Lake. Comment
  CHSC65305  Atriplex rosea Vernon H. Oswald; Lowell Ahart 1995-8-14 7174 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  CHSC100131  Atriplex truncata L. P. Janeway 2008-8-2 9528 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
  POM35967  Balsamorhiza deltoidea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 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
  RSA584835  Balsamorhiza hirsuta Bruce Bartholomew, M. Gilbert, L. Skog 1993-5-13 6557 Lassen Just S. of Ravendale. 1580 Comment
  CAS-BOT-BC106486  Balsamorhiza hookeri Elmer I. Applegate 1934-5-4 8919 Lassen Plains at south end of Secret Valley Comment
  JEPS19803  Balsamorhiza hookeri Rimo Bacigalupi with S. Galen Smith 1957-6-28 6013 Lassen ne of Karlo, along U.S. Highway 395 Karlo (near headwaters of Secret Cr., n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  UC964788  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi west of Fredonyer Pass, Highway 36 Comment
  UCD20370  Balsamorhiza macrolepis Tom Vestal DVM 2002-5-23 s.n. Lassen south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir. Comment
  UC1119024  Balsamorhiza sagittata C. W. Hanks 1934-8-18 56 Lassen n part of Upper Long Valley (Sierraville); Sierraville 1463 Comment
  UC1137703  Balsamorhiza sagittata A. Simontacchi 1940-6-4 802 Lassen 7.0 mi sw of Jacks Lake (Halls Flat); Halls Flat 1828 Comment
  HSC26602  Barbarea orthoceras D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19166 Lassen 3 mi. N of Westwood 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
  CAS-BOT-BC145784  Beckmannia syzigachne Peter H. Raven; Otto T. Solbrig 1958-6-17 13262 Lassen United States Highway 395, 2.1 miles northeast of Standish. Comment
  JEPS121246  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18871 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  HSC95181  Betula glandulosa Gordon Leppig 1998-7-12 957 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  RSA504677  Betula nana Bruce Bartholomew, B. Anderson 1988-7-22 4500 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  CHSC117276  Bidens cernua Lowell Ahart; John Dittes 2016-7-15 21225 Lassen On the west side of the road about 600 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60760  Bistorta bistortoides Vernon H. Oswald; Lowell Ahart 1993-6-3 5484 Lassen Champs Flat Rd. (Lassen 105), Forest 32N28Y), 2.4 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  CAS-BOT-BC127951  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CAS-BOT-BC128039  Blepharipappus scaber Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16355 Lassen Roadside E. of Eagle Lake, 2 mi. N. of Susanville Comment
  CHSC5201  Blepharipappus scaber 1944-7-1 Lassen Eagle Lake. 1584 Comment
  SBBG30617  Blepharipappus scaber D. Myrick 1968-6-19 1958 Lassen Hwy 395, 23 mi S of Alturas 1524 Comment
  UC1368786  Blepharipappus scaber John L. Strother 1970-5-23 953 Lassen 6 mi n of Honey Lake 1280 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
  RSA603799  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3725 Lassen 5 miles south of Likely. 1402 Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  CAS-BOT-BC14089  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 miles SE of Nigger Cabin. 1737 Comment
  CHSC68852  Boechera pinetorum Vernon Oswald; Lowell Ahart 1997-6-24 8622 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. On a roadcut. 2164 Comment
  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
  CAS-BOT-BC25512  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-7-31 50039 Lassen Sierra Nevada. Diamond Range on road from Janesville to Thompson Peak. 1737 Comment
  CHSC60730  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1993-6-14 5512 Lassen Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. Roadside. 1810 Comment
  CHSC91294  Boechera retrofracta Lowell Ahart; John Dittes 2005-6-2 11926 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
  JEPS107792  Boechera retrofracta Lowell Ahart, John Dittes 2005-6-2 11926 Lassen 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
  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
  CHSC29908  Boechera sparsiflora Robin Ondricek 1978-6-6 38 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  CHSC60729  Boechera sparsiflora Vernon H. Oswald; Lowell Ahart 1993-6-14 5546 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  CHSC99127  Boechera sparsiflora Lowell Ahart; John Dittes 2008-6-19 14885 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS88209  Boechera sparsiflora Vernon H. Oswald and Lowell Ahart 1996-6-17 7774 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, slope at the bridge spanning the Susan R. on n. side of Hwy 36); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  JEPS90262  Boechera sparsiflora Dean Wm. Taylor with Glenn L. Clifton 1992-5-7 12542 Lassen 1.5 mi sw of Ash Valley Cemetery (Modoc Plateau, Ash Valley); Modoc Plateau, Ash Valley Comment
  RSA41170  Boisduvalia glabella Robert F. Hoover 1940-9-21 4602 Lassen 4 miles west of Susanville Comment
  RSA772655  Boisduvalia glabella Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  RSA32754  Boisduvalia macrantha A. A. Heller 1938-7-28 15295 Lassen About a mile east of Westwood 1524 Comment
  UC2118  Bolboschoenus fluviatilis J. Burtt Davy Jun 17 1897-Jun 24 1897 3313 Lassen Byers' Ranch Honey Lake Valley, Byers' Ranch Comment
  RSA210962  Brickellia grandiflora James Henrickson 1969-9-4 4268 Lassen 4 miles south of Westwood along Highway 147. Along dirt road into forest along small river. 1390 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
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
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Jun 19 2008
  CHSC80306  Bromus briziformis Jeanne Boze 1981-6-11 101 Lassen About 4 m from road, back from Horse Lake Road, 5.5 mi from Hwy 139. 1676 Comment
  UC506924  Bromus carinatus var. carinatus George A. Fischer, Irwin H. Johnson 1933-7-14 F 251 Lassen Lassen National Forest 1767 Comment
  CHSC23516  Bromus carinatus var. marginatus Wayne O. Baum 1971-7-5 71 -13 Lassen E. slope of Gallatin Peak. 1981 Comment
  UCD59099  Bromus carinatus var. marginatus R. Tofsrud 1947-7-1 224 Lassen Between Ravendale and Thermo. Comment
  UCD59104  Bromus carinatus var. marginatus A. A. Beetle 1941-6-28 2802 Lassen 10 miles W of Chester. 1524 Comment
  UCD59217  Bromus carinatus var. marginatus L. Whitney 1935-6-19 3262 a Lassen Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC118475  Bromus carinatus var. marginatus Don Lepley 2016-7-20 Lassen Eagle Lake Ranger District. Uphill side of Road 29N43.2 at outlet of Aspen Flat (tributary to Baxter Creek). 2026 Comment
  CAS-BOT-BC155939  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 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
  CAS-BOT-BC155323  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  CAS-BOT-BC155324  Bromus inermis John Thomas Howell 1973-7-10 49766 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  CAS-BOT-BC162178  Bromus orcuttianus John Thomas Howell 1934-7-10 12554 Lassen Black's Mountain. Comment
  CAS-BOT-BC162017  Bromus racemosus Louella Bass 1973-5-29 EV 66 Lassen Elysian Valley. 1325 Comment
  CHSC106670  Bromus tectorum B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 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
  UCD59875  Bromus tectorum R. N. Raynor 1940-4-16 s.n. Lassen Round Valley. Comment
  SEINET4564916  Bromus tectorum J. Young 1982-6-7 s.n. Lassen Redlands, northeast Lassen Co. 1676 Comment
  CAS-BOT-BC185530  Bromus vulgaris John Thomas Howell; Gordon H. True 1973-7-31 50056 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  JEPS124786 Image available Callitriche palustris B. Corwin 1964-7-1 124 Lassen Under bridges between Bieber and New Bieber on rte. 299. Comment
  CAS-BOT-BC80347  Calocedrus decurrens Ralph K. Gierisch 1968-7-12 3357 Lassen Lassen Forest, Hwy 36 1 mile east of Fredonyer Pass 1706 Comment
  CHSC6217  Calocedrus decurrens P. Balch 1955-7-18 Lassen Willow Creek, Eagle Lake. 1463 Comment
  UCD132943  Calocedrus decurrens T. E. Weier; Katrina Weier 1946-9-1 s.n. Lassen Lassen National Park. Comment
  HSC23523  Calochortus leichtlinii R. Carter 1967-6-27 552 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  UC3407  Calochortus leichtlinii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  CAS-BOT-BC487964  Calochortus leichtlinii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50680 Lassen Summit ridge of Diamond Mt. 2346 Comment
  RSA166662  Calochortus leichtlinii H. Dearing, M. Dearing 1938-7-1 2237 Lassen Top of pass west of Susanville 1763 Comment
  UC1537211  Calochortus macrocarpus Gordon H. True Jr. 1936-6-26 542 Lassen near Litchfield (w slope of Rice Canyon); Rice Canyon 1463 Comment
  SEINET3260040 Image available Calochortus macrocarpus Marcus E. Jones 1897-7-1 Lassen Susanville at Perkin's Ranch. 1520 Comment
  CHSC30590  Calyptridium umbellatum Marc Held 1972-6-29 22 Lassen North end of Dean's Meadow. Comment
  UC420619  Calyptridium umbellatum Franklin P. Nutting Lassen Pine Creek Comment
  SEINET11931593  Calyptridium umbellatum Unknown 1978-1 5 Lassen Colman L., S of Eagle L 1963 Comment
  SEINET194898  Calyptridium umbellatum A. A. Heller 1938-6-22 15139 Lassen 1 mi E of Westwood along St Hwy 36 1524 Comment
  JEPS88237  Calystegia occidentalis subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-17 7811 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Highway 36 ca. 7 mi W of Susanville. Modoc Plateau. Comment
  RSA339996  Calystegia polymorpha Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-9 9581 Lassen Surprise Valley, 23.7 km (14.7 mi) south of Fort Bidwell. 1402 Comment
  POM253049  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles south of Westwood 1524 Comment
  RSA0009459  Camassia quamash subsp. breviflora Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  RSA32023  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles south of Westwood 1494 Comment
  OBI76938  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along hwy 395 ca. 6.6 mi S of Karlo Rd quad 1220 Comment
  UC2027336  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along Highway 395 ca. 6.6 m S of Karlo Road. quadrangle. Comment
  SEINET3282784 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  SEINET5343990  Camissonia contorta M. J. Williams 1974-7-26 74 -L-22 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 70 1494 Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  JEPS107981  Camissonia parvula Lowell Ahart, John Dittes 2005-6-2 11938 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  POM38767  Camissonia parvula Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  NY852079  Camissonia tanacetifolia P. H. Raven 1963-5-29 18426 Lassen Along U. S. Highway 395 0.9 mile north of Ravendale Comment
  SEINET10492095  Camissonia tanacetifolia David B. Dunn, Paul Gallian 1971-6-2 Dunn 493 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc; juniper artemesia. 1646 Comment
  RSA12158  Camissonia tanacetifolia subsp. quadriperforata Wayne E. Sawyer 1935-6-27 219 Lassen Long Valley. 1311 Comment
  CAS-BOT-BC160862  Camissonia tanacetifolia subsp. tanacetifolia Hans Leschke 1963-8-28 1870 Lassen Lassen Volcanic National Park. South shore of Snag Lake 1856 Comment
  CAS-BOT-BC160866  Camissonia tanacetifolia subsp. tanacetifolia A. R. Kruckeberg 1954-6-22 3322 Lassen Along roadbanks, 6 miles s. of Likely on Highway 395 Comment
  RSA186587  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  CAS-BOT-BC282942  Canadanthus modestus B. Bartholomew; B. Anderson 1988-7-22 4499 Lassen Mosquito Creek ca 2 km SW of Patterson Meadow, S end of the Warner Mountains 2080 Comment
  UC773929  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  CAS-BOT-BC37244  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49478 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC37252  Cardamine breweri Louella Bass 1980-5-22 s.n. Lassen Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville. Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  UCD163081  Carex Jack Major 1966-6-24 Lassen Modoc National Forest. Long Valley. 3 airline miles southwest of Patterson Guard Station. (Exact location unknown. Coordinates estimated by label maker.) 1981 Comment
  JEPS28340  Carex abrupta George W. Gillett 1957-7-21 867 Lassen 300 yards n trail summit (Juniper Lake - Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  CHSC85992  Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  HSC97144  Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. Along end of meadow and marsh along Bridge Creek, 1.8 km. N of Hwy. 44, just NW of the Cinder Pit 1716 Comment
  SEINET7549686 Image available Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  CAS-BOT-BC18107  Carex athrostachya James Stokes 1939-6-15 s.n. Lassen Bullard Lake west of Grasshopper Valley. Comment
  CHSC60428  Carex athrostachya Mary Ann Showers 1992-6-13 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC99511  Carex athrostachya Lowell Ahart; John Dittes 2008-6-20 14939 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
  UC2015834  Carex breweri Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4443 Lassen Lassen Volcanic National Park. Lassen Peak, near parking area. Comment
  CHSC96431  Carex cusickii Gordon Leppig; J. Cromwell 1997-7-27 620 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC34933  Carex densa T. C. Fuller 1966-7-20 14963 Lassen South side of road to Pittville, 5.4 miles west of Little Valley Post Office. NW Lassen County. Comment
  CHSC68771  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8519 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy. 139. 1682 Comment
  HSC82188  Carex douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6037 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC19776  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Plumas National Forest. Milford Ranger District. East side of saddle, ca. 0.8 mile northeast of Meadowview Peak. 1981 Comment
  SEINET7485202 Image available Carex filifolia Barbara L. Wilson, Danna Lytjen and Nick Otting 2005-1 11451 Lassen northeast part of Round Corral Reservoir, north of Buckhorn Road about a mile and a half west of Pyramid Lake 1876 Comment
  CHSC108015  Carex filifolia var. erostrata Lowell Ahart; John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1133496  Carex filifolia var. erostrata A. Simontacchi 1940-5-17 729 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS118164  Carex geyeri Dean W. Taylor 2009-5-20 20601 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  JEPS28342  Carex heteroneura George W. Gillett 1957-7-21 865 Lassen 300 yds. n trail summit (Juniper Lake - Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  CAS-BOT-BC20937  Carex heteroneura George Wilson Gillett 1957-7-28 937 Lassen Widow Lake. South shore. 2072 Comment
  SEINET7587561 Image available Carex heteroneura George W. Gillett 1957-7-28 937 Lassen Lassen Volcanic National Park, Widow Lake. 2073 Comment
  CHSC85990  Carex heteroneura var. heteroneura L. P. Janeway 2003-7-24 7915 A Lassen High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  JEPS120111  Carex integra Lowell Ahart, John Dittes 2012-7-9 18299 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1609339  Carex lasiocarpa Vernon H. Oswald and Lowell Ahart 1993-8-3 5752 Lassen e Silver Lake (nw part of the swamp, just e of the Caribou Wilderness, ca. 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
  JEPS88667  Carex lenticularis var. impressa Dean W. Taylor 1975-8-24 5407 Lassen margin of Everett Lake Thousand Lake Wilderness Area, Magee Peak, Everett Lake 2307 Comment
  HSC103673  Carex lenticularis var. lipocarpa Thomas W. Nelson, Jane Nelson 1985-8-10 8023 Lassen Margin of pond along south side of lava flow on west side of Silver Lake 1829 Comment
  CAS-BOT-BC31439  Carex leporinella Hans Leschke 1945-9-15 s.n. Lassen Near Twin Lakes, Mt. Lassen Comment
  HSC46422  Carex mariposana D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19178 Lassen Harvey Valley near Cone Springs Comment
  CHSC114406  Carex microptera Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A. 2133 Comment
  RSA755319  Carex nebrascensis L. Ahart, John Dittes 2008-6-22 15019 Lassen On the north side of the levee, about 90 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 air miles northeast of Bieber. 1261 Comment
  UC2031881  Carex nebrascensis Nick Otting and Danna Lytjen 2003-7-17 693 Lassen Cascade Mountains, Susan River, 1/2 mile NE of Devil's Corral, 5 air miles west of Susanville. Comment
  HSC103614  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8005 Lassen Along north side of Silver Lake 1829 Comment
  CHSC61593  Carex pellita Arthur C. Barrett 1915-8-18 36 Lassen Plumas National Forest. Along stream near Laufman Sta. 1508 Comment
  UC506938  Carex petasata George A. Fischer, Irwin H. Johnson 1933-7-12 Lassen Patterson Flat Lassen National Forest 1737 Comment
  CAS-BOT-BC118401  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen Dry drainageway of Rush Creek, N of Smoke Creek Ranch Road, 2 km W of the stateline, Comment
  UCD55306  Carex praegracilis Ellen Dean; Gary Schoolcraft 2006-5-16 3135 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
  CAS-BOT-BC118400  Carex praegracilis John Thomas Howell 1975-7-23 51407 Lassen Wet ground along Hwy 395 between Johnstonville and Jonesville 1280 Comment
  CDA33131  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  UC1108040  Carex scopulorum var. bracteosa E. B. Copeland 1932-8-15 Lassen King's Creek Meadow, at road crossing Mount Lassen 2225 Comment
  JEPS114623  Carex sheldonii Lowell Ahart, John Dittes 2008-6-22 15045 Lassen High dry bank of a levee, north of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.5 miles (air) northeast of Bieber 1267 Comment
  CHSC110302  Carex simulata L. P. Janeway; B. Castro 2012-7-2 10930 Lassen Modoc Plateau. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1600 Comment
  CHSC96453  Carex simulata Gordon Leppig; J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95281  Carex simulata Gordon Leppig, J. Cromwell 1997-7-27 619 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95326  Carex simulata Gordon Leppig, Tony LaBanca. L. Arguello 1997-6-28 513 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1108042  Carex specifica E. B. Copeland 1932-8-15 Lassen woods between Hat Lake and Summit Lake; Mount Lassen 1981 Comment
  CAS-BOT-BC116625  Carex subfusca Alice Eastwood; John Thomas Howell 1940-6-15 8304 Lassen Willow Creek near Hayden Hill. Comment
  RSA702448  Carex subfusca L. P. Janeway 2004-6-26 8169 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  CAS-BOT-BC116613  Carex subfusca Hans Leschke 1958-8-17 1568 Lassen Reflexion Lake 1792 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-BC116617  Carex subfusca B. Clear 1938-7-14 s.n. Lassen Manzanita Lake, Lassen Park. Comment
  CHSC60439  Carex utriculata Mary Ann Showers 1992-6-13 2544 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  JEPS103197  Carex vallicola B. Corbin 2001-5-30 1002 Lassen S of Harter Flat, along jeep road 1 mi S of Nelson Corral Res. 1868 Comment
  HSC103677  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8029 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  HSC48217  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19237 Lassen 2 mi. N of Westwood Comment
  JEPS63615  Carex whitneyi Leland S. Smith 1922-7-23 75 Lassen Lassen National Forest Comment
  CHSC75539  Castilleja angustifolia Vernon H. Oswald; Lowell Ahart 1999-6-9 9746 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. Comment
  JEPS25553  Castilleja angustifolia Wayne Roderick 1961-4-29 Lassen 29.3 mi s Ravendale (just off U.S. Highway 395, close to junction with Smoke Creek Road) 1341 Comment
  JEPS94129  Castilleja angustifolia Vernon H. Oswald and Lowell Ahart 1998-5-22 9108 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  HSC93502  Castilleja applegatei subsp. disticha Gordon Leppig, Tony LaBanca 1998-7-13 965 Lassen Modoc National Forest, Blue Lake Ranch 1799 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
  CAS-BOT-BC249616  Castilleja applegatei subsp. pinetorum Doris Kildale Gillespie 1930-5-13 9367 Lassen Between Susanville and Janesville Comment
  CHSC30598  Castilleja applegatei subsp. pinetorum Marc Held 1972-6-29 19 Lassen 3 miles from Dean's Meadow, towards 5 points, off road side. Comment
  CHSC36455  Castilleja applegatei subsp. pinetorum Susan H. Euing 1982-6-5 9 Lassen Ca. 3 1/2 mi s of jct of forest service roads 5.16 and 5.17. Comment
  JEPS17616  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with G. T. Robbins 1955-7-20 5411 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley); Warner Mountains, Modoc National Forest, Long Valley Meadow 2057 Comment
  RSA747544  Castilleja applegatei subsp. pinetorum K. M. Meyer, A. Townesmith 2007-7-23 152 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  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
  UC1137290  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1924599  Castilleja applegatei subsp. pinetorum Debra Valov 2006-5-28 2006009 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1291 Comment
  JEPS94529  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1997-6-24 8642 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
  JEPS87488  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  OBI48148  Castilleja chromosa Rhonda Riggins 1989-4-27 1639 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  JEPS80676  Castilleja lacera L. R. Heckard with T. I. Chuang 1981-6-10 5528 Lassen 2.3 mi w Nubieber (along Route 299) 1341 Comment
  UC1924577  Castilleja lacera Debra Valov 2006-5-29 2006028 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CHSC4817  Castilleja linariifolia R. Carter 1967-7-16 617 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca 12 mi n of Susanville, on s side of rd. Comment
  RSA505356  Castilleja miniata R. C. Bacigalupi, G. Thomas Robbins 1955-7-20 5402 Lassen Along East Creek on grade 2.3 miles south of and below Patterson Ranger Station (and 0.8 mile s. of Lassen - Modoc County line). Southern end of the Warner Mts. 2012 Comment
  CAS-BOT-BC241002  Castilleja pilosa Doughitt; Parkison 1916-6-8 4 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  JEPS3805  Castilleja pilosa G. S. Crew and C. S. Robinson 1927-6-25 35 Lassen near Westwood Jct. (sw Lassen County); Norval Flat 1747 Comment
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0047057  Castilleja pilosa L. P. Janeway 2004-6-26 8151 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
  RSA637591  Castilleja pilosa Michael A. Vincent 1999-6-9 8584 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CHSC5911  Castilleja tenuis J. B. Kimsey 1946-6-20 Lassen Grasshopper Valley. 1615 Comment
  JEPS4336  Castilleja tenuis Brown and Wieslander 1922-7-18 36 Lassen Martin Springs; Eagle Lake Comment
  UC1012485  Castilleja tenuis Francis W. Pennell 1940-6-7 25727 Lassen 8 mi e Nubieber (Route 299) 1310 Comment
  UC1520675  Castilleja tenuis Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9483 Lassen 4.6 mi s Ravendale (U.S. Hwy 395) 1615 Comment
  UC1567425  Castilleja tenuis G. Schoolcraft 1989-6-12 1913 Lassen Ash Valley RNA/ACEC Ash Valley 1554 Comment
  UCD164167  Caulanthus major N. Ivalu Cacho; Sharon Y. Strauss, Bryan T. Drew 2010-7-5 IC-SS 131 - Lassen Fredoyner Peak; on rocky outcrop on summit. 2393 Comment
  JEPS123842  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2015-7-14 20329 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC52051  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen About 4 1/2 mis. West of Bieber along Highway #299 Comment
  JEPS103176  Ceanothus prostratus G. Schoolcraft 2000-4-25 2890 Lassen 3.5 mi N of Susanville along Hwy 139 1402 Comment
  CHSC6250  Ceanothus velutinus L. Harman 1946-6-23 Lassen Roop mountain. Eagle Lake. 2133 Comment
  RSA747546  Ceanothus velutinus var. velutinus K. M. Meyer, A. Townesmith 2007-7-23 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CDA7251  Centaurea maculosa T. C. Fuller 1962-8-28 9472 Lassen West side of Highway 395, 1.7 miles south of Doyle. 0 Comment
  CHSC114170  Centaurea solstitialis R. E. Brainerd; N. Otting 2004-8-26 538 Lassen Highway 395 ca 30 miles northeast of Susanville. 1371 Comment
  CDA7337  Centaurea squarrosa T. C. Fuller, W. T. Parsons 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley. 0 Comment
  CAS-BOT-BC281208  Centaurea stoebe subsp. micranthos Lee E. Wheeler 1962-8-15 s.n. Lassen Doyle area Comment
  CAS-BOT-BC106029  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen On both sides of the road from 0.1 to 0.9 mi. s. of the bridge at Pittville Comment
  SEINET13331057 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  SEINET13331314 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  UC35451  Centaurium exaltatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3392 Lassen Honey Lake Valley Comment
  CHSC76087  Centromadia pungens subsp. pungens Lowell Ahart; Vernon H. Oswald 1999-9-13 8224 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC99981  Centromadia pungens subsp. pungens L. P. Janeway 2008-8-2 9523 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  CAS-BOT-BC279595  Centromadia pungens subsp. pungens Gladys L. Smith; Margaret Williams; Loring Williams; Charles Smith 1983-9-15 8392 Lassen Along Lassen 3-A, the Susanville By-pass for Rte. 395 1219 Comment
  CHSC99741  Cerastium glomeratum Lowell Ahart; John Dittes 2008-6-20 14966 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 7.0 miles (air) northeast of Bieber. 1263 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
  SDSU8985  Cercocarpus betuloides D. F. Howe 1961-8-4 3134 Lassen 11.5 miles east of McArthur on US 299. 1372 Comment
  UCD35729  Cercocarpus ledifolius Beecher Crampton 1960-6-18 5710 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  JEPS126473  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -063 Lassen Take 139 north to Fredonyer Peak. Comment
  CAS-BOT-BC143810  Cercocarpus ledifolius var. ledifolius A. G. Brenneis 1928-5-28 3 Lassen 1/2 mi. East of Willow Springs, Lassen National Forest 1371 Comment
  CHSC23520  Cercocarpus ledifolius var. ledifolius Wayne O. Baum 1971-6-28 71 -47 Lassen E. slope of Gallatin Peak. 2103 Comment
  CHSC6241  Cercocarpus ledifolius var. ledifolius W. Vinyard 1946-6-17 Lassen Specimen with flowers from summit Mt. Fredonyer. 2421 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
  CHSC13597  Chaenactis douglasii var. douglasii J. Pitts 1972-6-22 256 Lassen 20 yds. se of Shepherd's Hall, Eagle Lake Field Station. Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC276610  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-24 3737 Lassen 2 miles S of Ravendale 1464 Comment
  CHSC4857  Chamaebatiaria millefolium R. Carter 1967-7-13 588 Lassen On the rd to Eagle Lake, Biology Station and Willow Creek. 1584 Comment
  UCD112951  Chamaebatiaria millefolium Al Franklin 1987-7-7 87 - Lassen Eagle Lake Field Station, east shore of Eagle Lake, N of Susanville. 1584 Comment
  CHSC112769  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18847 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121298  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-7-22 18847 Lassen W margin of duck field, about 30 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET9445226  Chamaesyce serpyllifolia M. J. Williams 1974-7-29 74 -L-47 Lassen S of Hwy 70, 2 miles W of Hallelujah Junction. 1494 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  RSA0045636  Chamomilla suaveolens Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife, Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  UC62593  Cheilanthes intertexta Baker and Nutting 1894-7-3 Lassen Dixey Mts Comment
  CDA20579  Chenopodium atrovirens S. McCullough 2005-8-22 s.n. Lassen Cascade Range; Lassen Volcanic National Park. 0 Comment
  POM312487  Chenopodium berlandieri var. zschackei Irving Schneider 1947-8-1 8229 Lassen Irrigation ditch running SW into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1587041  Chenopodium fremontii G. Schoolcraft 1991-7-31 2206 Lassen just s of Shinn Peak 2103 Comment
  CAS-BOT-BC426335  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  CAS-BOT-BC451322  Chimaphila Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CHSC45516  Chimaphila menziesii Lowell Ahart; John Thomas Howell 1974-7-9 538 Lassen On the south side of Eagle Lake Road, near the south edge of Eagle Lake. 1584 Comment
  UC1483860  Chimaphila menziesii G. Schoolcraft 1980-7-15 311 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  UC1483847  Chimaphila umbellata G. Schoolcraft 1980-7-29 343 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  UC149174  Chorizanthe watsonii T. S. Brandegee Lassen Honey Lake Comment
  CHSC30554  Chrysolepis sempervirens Sori H. Shad 1970-6-26 20 Lassen Found at the edge of Deans Meadow. 1828 Comment
  UC1135263  Chrysolepis sempervirens A. Simontacchi 1940-8-8 938 Lassen 4.2 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1889 Comment
  RSA3395  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile east of Termo 1646 Comment
  CAS-BOT-BC105903  Chrysothamnus viscidiflorus subsp. viscidiflorus Margaret Williams 1974-7-27 74 -L-56 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 - Sierra Nevada 1493 Comment
  CAS-BOT-BC105904  Chrysothamnus viscidiflorus subsp. viscidiflorus Elmer I. Applegate 1897-6-3 858 Lassen South end of Madeline Plains Comment
  UC527342  Chrysothamnus viscidiflorus subsp. viscidiflorus C. B. Wolf 1931-9-4 Lassen 2.6 mi from Bieber (on the road to Alturas); Big Valley 1267 Comment
  UC1184293  Chylismia claviformis subsp. cruciformis Peter H. Raven and Otto T. Solbrig 1958-6-17 13269 Lassen along US Hwy 395 19.0 mi s Ravendale Comment
  UC1602277  Chylismia claviformis subsp. cruciformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3399 Lassen Amedee Honey Lake Valley Comment
  POM35787  Cichorium intybus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  POM35788  Cichorium intybus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CDA38207  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CDA38208  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  RSA299121  Cinna latifolia J. T. Howell, Gordon H. True 1973-8-1 50346 Lassen Gold Run Creek road, south of Susanville, Diamond Range. 1951 Comment
  RSA746510  Cirsium andersonii K. M. Meyer, A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. CA, 1.3 mi. on road 110, off Hwy A21, 1821 Comment
  NY409534  Cirsium arvense G. Schoolcraft 1988-8-10 1847 Lassen In Willow Creek Valley along Hwy. 139. 149.4 Comment
  UCD159574  Cirsium arvense D. S. Park 2011-6-27 311 -1 Lassen East of Westwood. Growing near Willard Creek. Comment
  CHSC60715  Cirsium cymosum Vernon H. Oswald; Lowell Ahart 1993-6-14 5533 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). Between road and lake. 1566 Comment
  CAS-BOT-BC278002  Cirsium cymosum Peter H. Raven; Otto T. Solbrig 1958-6-17 13279 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  SEINET10725916  Cirsium occidentale var. candidissimum Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 143 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 Comment
  SEINET3082769 Image available Cirsium occidentale var. candidissimum N. 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
  UC1587096  Cirsium occidentale var. candidissimum G. Schoolcraft 1991-7-30 2201 Lassen s of Widow Mt. (along Rock Canyon Rd.) 1310 Comment
  CDA1489  Cirsium ochrocentrum Lee Wheeler 1959-7-23 s.n. Lassen Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.) Comment
  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
  JEPS109645  Cirsium scariosum Dean W. Taylor 2002-6-21 18176 Lassen Windmill Flat (lying ca. 1.5 mi NW of Snider Lake), north end of the flat near the base of the windmill 1706 Comment
  SBBG7961  Cirsium scariosum var. americanum H. and M. Dearing 1938-7-1 2242 Lassen W of Susanville Comment
  CAS-BOT-BC163164  Clarkia lassenensis A. M. Vollmer; L. Beane 1953-7-1 98 Lassen Along Halls Flat road, beginning 6 mi. W of Susanville to McArthur 1554 Comment
  JEPS96107  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1996-6-17 7780 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side Hwy. 36 between trail & hwy. spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  RSA122142  Clarkia rhomboidea L. R. Short, Wm. Gansberg 1936-7-3 S- 358 Lassen MDM. Burgess Spr. Exp. Range. Lassen National Forest 1848 Comment
  CHSC29927  Clarkia stellata Robin L. Ondricek 1978-6-14 57 Lassen 1.8 mi E of Coleman Rd. on Lassen Co. Rd. A1. 1950 Comment
  CHSC36439  Clarkia stellata Dave Leuck 1981-6-16 20 Lassen Subway Cave on Hwy 44. Comment
  CHSC80231  Clarkia stellata Jeanne Boze 1981-6-12 108 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 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
  SEINET5336402  Claytonia perfoliata subsp. intermontana J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin CA. Comment
  CHSC63414  Claytonia rubra subsp. depressa Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6311 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  CHSC99500  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2008-6-20 14910 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  UC773923  Claytonia rubra subsp. rubra L. R. Short and Wm. Gansberg 1936-6-2 S- 359 Lassen Burgess Spring Experimental Range; Lassen Forest 1865 Comment
  UC725411  Cleome platycarpa A. A. Heller 1938-6-23 15207 Lassen n of Mapes (on U.S. Highway 395) 1371 Comment
  NY222830  Cleome platycarpa G. H. True Jr. 1937-6-27 792 Lassen Near Skeedaddle. 1524.0 Comment
  UCD150394  Cleomella parviflora Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  NY242079  Cleomella plocasperma R. F. Hoover 1940-9-29 4642 Lassen Litchfield. Comment
  NY242362  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  CHSC23569  Collinsia parviflora W. O. Baum 1971-7-6 38 Lassen E slope of Gallatin Peak. 1950 Comment
  CHSC35898  Collinsia parviflora M. S. Taylor 1982-5-7 4427 Lassen Reno Junction on Hwy 70 just e of Beckwourth Pass. 1524 Comment
  JEPS11714  Collinsia parviflora F. W. Pennell 1940-6-9 25752 Lassen 7 mi n Madeline (along Rte 395) 1615 Comment
  JEPS95129  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1997-5-27 8500 Lassen North of Susanville (on Forest Rte. 38N04 (between Hwy. 139 near Willow Creek Guard Station & Coyote Flat), 0.1 mi. e. of Hwy. 139, on flood plain of small creek paralleling rd.) 1546 Comment
  RSA0117240  Collinsia parviflora L. R. Short 1936-5-7 S- 344 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  POM126992  Collomia grandiflora Franklin P. Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  POM75605  Collomia grandiflora Marcus E. Jones 1897-6-26 10168 Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC68866  Collomia linearis Vernon Oswald; Lowell Ahart 1997-6-24 8621 Lassen South of Susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. 2036 Comment
  JEPS17747  Collomia linearis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5407 Lassen 4.4 mi s Patterson Ranger Sta.; southern end of Warner Mountains, Modoc National Forest, Lon 2057 Comment
  UC1924199  Collomia linearis Debra Valov 2005-8-20 2005229 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1279 Comment
  CHSC25914  Collomia tinctoria K. R. Stern 1967-7-1 2470 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  UC1123659  Collomia tinctoria A. Simontacchi 898 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quadrangle Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  JEPS121290  Conium maculatum Lowell Ahart, John Dittes 2013-7-23 18901 Lassen W side of the road levee, about 80 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1483856  Corallorhiza maculata G. Schoolcraft 1980-7-15 308 Lassen w Bieber; Big Valley Mountain timber sale area (Bureau of Land Managem 1798 Comment
  CAS-BOT-BC212204  Cornus sericea Clare B. Hardham 1971-8-22 18903 Lassen Diamond Mountain Comment
  CAS-BOT-BC212207  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  CHSC66384  Cornus sericea subsp. sericea Vernon H. Oswald; Lowell Ahart 1996-6-17 7810 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marsh at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CAS-BOT-BC401848  Corydalis caseana subsp. caseana John Thomas Howell; Gordon H. True 1973-8-1 50237 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  CHSC21233  Crepis acuminata Robert A. Schlising 1974-6-25 3148 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station. Near Bly Tunnel. Comment
  JEPS107790  Crepis acuminata Lowell Ahart, John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC581223  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1936-6-7 1763 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  UC581283  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2314 Lassen about a mi below summit; Black Mountain 1940 Comment
  UC773983  Crepis acuminata L. R. Short 1936-7-9 S- 509 A Lassen Burgess Spring Experiment Range Lassen <National> Forest 1818 Comment
  CAS-BOT-BC290392  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2294 Lassen South slope Thompson Peak, south of Janesville 2133 Comment
  CAS-BOT-BC376483  Crepis bakeri subsp. cusickii G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-14 2331 Lassen Along road half way between Bogard Ranger Station and Harney Valley 1630 Comment
  SEINET10474584  Crepis bakeri subsp. cusickii Mary Susan Taylor 1982-5-29 Taylor 4562 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  UC581243  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2277 Lassen Diamond Mt.; summit and e slope Comment
  UC581246  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2298 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC581249  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2257 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Co.) Comment
  SD87658  Crepis monticola Frank W. Peirson 1926-6-22 6829 Lassen Lassen National Park Comment
  UC581304  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2352 Lassen sw-facing slope of mts. along hwy from McArthur to Bieber; Big Valley Mts. 1100 Comment
  CHSC60814  Crepis occidentalis subsp. conjuncta Vernon H. Oswald; Lowell Ahart 1993-6-28 5606 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC581317  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2218 Lassen 6 mi s Ravensdale 1676 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-BC290752  Crepis occidentalis subsp. occidentalis John Thomas Howell 1934-6-10 11872 Lassen Janesville Comment
  POM253179  Crepis occidentalis subsp. pumila A. A. Heller 1938-6-23 15201 Lassen Along Highway 36 in the valley east of Fredonyer Pass 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
  CAS-BOT-BC299712  Crocidium G. Schoolcraft 1987-4-29 1686 Lassen Susanville 1554 Comment
  UCD59985  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  UC78406  Cryptantha affinis T. S. Brandegee 1891-7-2 Lassen Susanville Comment
  SBBG6231  Cryptantha affinis H. and M. Dearing 1938-6-30 2226 Lassen ca. 50 mi W of Susanville Comment
  HSC81480  Cryptantha ambigua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6016 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  CHSC106681  Cryptantha circumscissa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC25315  Cryptantha circumscissa Pauleen Broyles 1977-4-1 168 Lassen Roadway along Skedaddle Creek ca 8 km ene of Herlong. 1350 Comment
  CHSC7765  Cryptantha circumscissa Beverly J. Wise 1969-5-18 77 Lassen 17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  UC1063944  Cryptantha echinella H. P. Hagge 1929-9-11 24 Lassen Logon Mtn. Eagle Lake Quad. 1828 Comment
  SJSU11363  Cryptantha glomeriflora J. W. Tilden 1960-6-27 1494 Lassen Westwood 1524 Comment
  POM252792  Cryptantha hendersonii A. A. Heller 1938-6-23 15206 Lassen Lassen County the ridge E of Mapes on Hwy 395. 1372 Comment
  POM46564  Cryptantha humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS124572 Image available Cryptantha intermedia var. grandiflora S. Hardinghaus 1967-7-11 167715 -114 Lassen 6 mi. S. of Eagle Lake where meets Hw 139 at west shore, on Hwy 139. Comment
  UC526165  Cryptantha pterocarya John Thomas Howell 1934-6-10 11851 Lassen 4 mi s Omira Comment
  UC78602  Cryptantha pterocarya T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  JEPS107799  Cryptantha pterocarya var. pterocarya Lowell Ahart, John Dittes 2005-6-2 11982 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  CHSC68850  Cryptantha simulans Vernon Oswald; Lowell Ahart 1997-6-24 8594 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  UC1748364  Cupressus bakeri L. P. Janeway and B. Castro, Loren Gehrung 1999-10-10 6595 B Lassen about 0.2 mi SE of Cypress Trailhead into Thousand Lakes Wilderness Area (near Eiler Creek between Fraener Peak and Horse Heaven Buttes); High Cascade Range 1658 Comment
  JEPS90144  Cusickiella douglasii Dean Wm. Taylor with Glenn Clifton 1990-6-12 10879 Lassen Modoc Plateau, Ash Valley, Forest Road 39N08, just as road enters the valley (as traveling from Adin) Ash Valley; Modoc Plateau, , Forest Road 39N08 1554 Comment
  CHSC43469  Cynoglossum occidentale Lowell Ahart; John Thomas Howell 1974-7-9 515 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  CAS-BOT-BC208395  Dalea ornata Gary Schoolcraft 1984-6-28 1280 Lassen NW of Shaffer Mtn., on the tablelands 1402 Comment
  HSC30066  Damasonium californicum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19182 Lassen Harvey Valley near Cone Springs Comment
  SBBG45003  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen overflow of Pitt River, 1 mi W of Bieber Comment
  CAS-BOT-BC445519  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen Overflow of Pitt River, 1 mile west of Bieber. Comment
  CAS-BOT-BC189863  Danthonia californica John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1024653  Danthonia californica Leo Whitney 1933-8-3 2201 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCD61015  Danthonia californica John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  RSA0065387  Danthonia californica M. P. Harthill 1972-6-17 834 Lassen Madeline. 1676 Comment
  UC1136811  Danthonia californica var. americana George A. Fischer and Irwin H. Johnson 1933-7-12 F 236 Lassen Patterson Flat Lassen National Forest 1737 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
  UC773969  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  JEPS18992  Deinandra lobbii Rimo Bacigalupi with L. R. Heckard 1957-8-18 6060 Lassen 3.1 mi ne Bieber (along U.S. Highway No. 299, nw Lassen County); Big Valley 1249 Comment
  UC1924204  Deinandra lobbii Debra Valov 2005-8-20 2005220 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC64806  Delphinium andersonii Vernon H. Oswald 1995-5-24 6784 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. On the s side of the road. 1219 Comment
  CHSC68759  Delphinium andersonii Vernon H. Oswald; Lowell Ahart 1997-5-27 8511 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. On the south side of the road. 1560 Comment
  UC1136878  Delphinium andersonii L. R. Short 1936-5-12 S- 347 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1834 Comment
  UCR244044  Delphinium andersonii Jim Andre 1993-6-1 19714 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC217332  Delphinium andersonii Leland S. Smith 1917-6-2 23 Lassen Parsnip Creek - Sec 35. 1524 Comment
  UC1609175  Delphinium depauperatum Vernon H. Oswald and Lowell Ahart 1993-6-28 5601 Lassen Rd. 35NO4 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley 1725 Comment
  CDA24233  Delphinium depauperatum T. C. Fuller 1963-6-1 10636 Lassen Road east to Willow Springs Campground, 1.9 miles east of Pittville-Susanville Road, 11.2 road miles south of Pittville. 0 Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  CHSC8562  Delphinium nuttallianum K. Stern 1967-7-1 Lassen Vic. Silver Lake. Comment
  UC1126095  Delphinium nuttallianum A. Simontacchi 1940-5-14 708 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  NY492431  Delphinium stachydeum G. Schoolcraft 1983-8-3 1123 Lassen About 2 miles south of Holbrook Canyon 1828.8 Comment
  CAS-BOT-BC194257  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-9 12517 Lassen Bridges Creek Spring Comment
  JEPS122164  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-8-20 19719 Lassen 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. Comment
  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
  JEPS71178  Deschampsia cespitosa subsp. cespitosa Brown and Wieslander 71 Lassen Comment
  UC1037093  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1934-7-15 2211 Lassen ca. 15 mi. w. Eagle lake (Crater Lake, Lassen Nat'l Forest); Lassen Nat'l Forest, Crater Lake 2133 Comment
  CAS-BOT-BC192742  Deschampsia danthonioides Louella Bass 1973-5-29 EU 57 Lassen Elysian Valley 1325 Comment
  CHSC99495  Deschampsia danthonioides Lowell Ahart; John Dittes 2008-6-20 14926 Lassen Vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA185317  Deschampsia danthonioides Clare B. Hardham 1961-6-17 s.n. Lassen Baxter Creek, south of Susanville 1677 Comment
  CAS-BOT-BC192746  Deschampsia danthonioides Clarence R. Quick 1962-6-17 62 25 A Lassen Swains Hole, a manmade pond in sagebrush flat south of Blacks Experimental Station 1554 Comment
  POM313167  Deschampsia elongata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  UC53606  Deschampsia elongata M. S. Baker and Frank Nutting 1894-7-5 Lassen Davis Creek Comment
  CDA42999  Descurainia nelsonii L. Ahart, John Dittes 2008-6-19 14891 Lassen West bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  CHSC25061  Descurainia pinnata L. B. Barlow 1967-6-23 7 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC4810  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected at Eagle Lake Biology Station, e central shore of Eagle Lake. 1524 Comment
  UC773932  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experiment Range; Lassen Forest 1833 Comment
  CHSC61163  Dicentra uniflora Vernon H. Oswald; Lowell Ahart 1993-5-12 5374 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in forest. 1737 Comment
  CHSC56816  Dichelostemma multiflorum Jerry Snodgrass 1978-7-8 42 Lassen Willard Creek, 2 mi S of Hwy 36 near Forest Service campsite. 1499 Comment
  HSC82268  Dieteria canescens var. canescens Thomas W. Nelson, Jane P. Nelson 1980-7-6 5996 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CHSC60820  Dieteria canescens var. shastensis Vernon H. Oswald; Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, between Grays Valley and Harvey Valley, E of Poison Lake. 1734 Comment
  UC1536890  Dieteria canescens var. shastensis G. H. True Jr. 1936-6-25 532 Lassen flats e of Harvey Ranger Station; Harvey Valley 1706 Comment
  UC1609238  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  CAS-BOT-BC290959  Dieteria canescens var. shastensis P. Monnet No date on label 789 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  CAS-BOT-BC153671  Diplacus mephiticus G. Schoolcraft 1989-6-17 1909 Lassen Northwest slope of Shaffer Mtn. Comment
  CHSC25121  Diplacus mephiticus William R. Lessig 1967-6-24 6 Lassen Collected ca. 200 yds. N. E. of Eagle Lake Biological Station. 1524 Comment
  CHSC26185  Diplacus mephiticus J. P. Kroessig 1977-5-23 28 Lassen Small scattered population at Eagle Lake Biological Station (CSUC), ca 37 km nnw of Susanville. 478 Comment
  CHSC57240  Diplacus mephiticus David M. Thompson 1998-6-1 923 Lassen 2.7 mi NW of Milford along Hwy 395. 1249 Comment
  CHSC71133  Diplacus mephiticus Vernon H. Oswald; Lowell Ahart 1998-5-22 9118 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  SEINET8350435  Diplacus mephiticus A. A. Heller 1938-6-22 15188 Lassen one mile east of Westwood in the Arid Transition Life Zone. 1524 Comment
  SBBG15309  Diplacus torreyi H. and M. Dearing 1938-7-1 2245 Lassen 17 mi W of Susanville Comment
  CAS-BOT-BC208725  Distichlis spicata A. A. Beetle 1941-6-28 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak Comment
  CHSC31978  Distichlis spicata L. Ahart; J. T. Howell 1974-7-9 536 Lassen Along rd, 5 mi w of Susanville. 1584 Comment
  SBBG115909  Distichlis spicata J. T. Howell 1973-7-10 49764 Lassen near Westwood 1554 Comment
  UC573727  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock 1341 Comment
  UC60225  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  CAS-BOT-BC136180  Dodecatheon alpinum John Thomas Howell 1934-6-14 12114 Lassen Near Lost Lake - Warner Mountains 2438 Comment
  CAS-BOT-BC136181  Dodecatheon alpinum John Thomas Howell 1934-6-14 12114 Lassen Near Lost Lake - Warner Mountains 2438 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
  UC444833  Dodecatheon alpinum Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  UC1137728  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1767 Comment
  CHSC6281  Dodecatheon pulchellum B. Anthony 1967-7-14 277 Lassen One mi e of Silver Lake. 1950 Comment
  RSA772873  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 Comment
  UC1143165  Downingia bacigalupii A. Simontacchi 1940-6-16 874 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1368461  Downingia bacigalupii R. K. Gierisch 1969-7-18 3549 Lassen Madeline Plains, near Modoc Forest/Expt. Area Madeline Plains 1615 Comment
  UC1523717  Downingia bacigalupii Gregg Riegel 1981-6-17 1150 Lassen 1280 Comment
  RSA149126  Downingia bacigalupii I. L. Wiggins, Dorothy Wiggins 1961-6-16 16532 Lassen Big Valley 2.5 miles E of Modoc-Lassen County line. Comment
  RSA292990  Downingia bacigalupii Stanton A. Cook 1958-7-19 824 Lassen 7.4 miles N of Ravendale on route 395. Comment
  UCD23274  Downingia bacigalupii Louis K. Mann, Pat Mann 1963-6-18 s.n. Lassen Road cut through sagebrush flat. 13 miles north of Susanville on road to Merrillville. Comment
  CHSC60887  Downingia bicornuta var. bicornuta Vernon H. Oswald; Lowell Ahart 1993-7-8 5649 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  JEPS22793  Downingia bicornuta var. bicornuta August L. Hormay 1934-5-15 Lassen 1 mi ne Halls Flat Railroad Station (on the Keddie-Nubieber (freight) branch of the W.P.R.R.) 1554 Comment
  SEINET10461289  Downingia bicornuta var. bicornuta Mary Merello 1993-6-27 Merello 744 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  UC1037336  Downingia bicornuta var. bicornuta Leo Whitney 1933-8-20 1693 Lassen ca 25 mi w upper end of Eagle Lake (near Halls Flat); Lassen National Forest 1737 Comment
  UCD58787  Downingia elegans Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  RSA128294  Downingia insignis P. H. Raven, Otto T. Solbrig 1958-6-17 13282 Lassen Along U.S. Hwy 395, 1.9 miles S of Ravendale. Comment
  RSA505420  Downingia insignis Rimo Bacigalupi, Mitchell, S. Galen Smith, G. Bacigalupi 1957-6-28 6000 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline 1616 Comment
  SEINET12329647  Downingia insignis N. H. Holmgren, Holmgren, P. K. 1980-1 9482 Lassen U.S. Highway 395, 7.4 km (4.6 mi.) S of Ravendale, T33N, R15E, S6 1620 Comment
  CAS-BOT-BC266473  Downingia laeta Malcom A. Nobs; S. Galen Smith 1949-7-20 1047 Lassen Bieber, along Highway 299 Comment
  CAS-BOT-BC266474  Downingia laeta Gordon H. True 1936-6-21 518 Lassen Honey Lake Valley Comment
  CHSC75486  Downingia laeta Vernon H. Oswald; Lowell Ahart 1999-6-9 9756 Lassen Northeast of Susanville and 4.1 mi south of Biscar Wildlife Management Area on BLM 26030 at the water crossing on Secret Creek. 1347 Comment
  CHSC61140  Draba verna var. aestivalis Vernon H. Oswald; Lowell Ahart 1993-5-12 5391 Lassen Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road. 1652 Comment
  CHSC91326  Draba verna var. aestivalis Lowell Ahart; John Dittes 2005-6-1 11901 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  HSC95204  Drosera anglica Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 522 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC76099  Elaeagnus angustifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8223 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3-1/2 miles (air) southeast of Standish. 1210 Comment
  JEPS120867  Elatine Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18752 -A 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
  RSA233772  Elatine R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39134 a Lassen Said Valley Reservoir Comment
  CHSC112749  Elatine californica Lowell Ahart; John Dittes 2013-7-22 18881 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
  JEPS118440  Elatine californica Lowell Ahart, John Dittes 2011-6-21 17527 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley 1268 Comment
  SEINET9342679  Elatine californica Robert Thorne, DeBuhr, Larry 1975-8-22 47212 Lassen Lassen County Comment
  UCD58788  Elatine chilensis Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  CHSC112748  Elatine rubella Lowell Ahart; John Dittes 2013-7-22 18883 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
  CAS-BOT-BC113618  Eleocharis acicularis George Wilson Gillett 1957-7-29 952 Lassen Mud flats along shore of Snag Lake, near iast inlet. 1850 Comment
  JEPS19338  Eleocharis acicularis Brown and Wieslander 1922-7-30 82 Lassen Martin Sprs. Eagle Lake Comment
  RSA0009565  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CAS-BOT-BC112846  Eleocharis macrostachya John Thomas Howell 1973-7-10 49805 Lassen Near Susanville on road to Janesville. 1295 Comment
  JEPS64130  Eleocharis palustris Brown and Wieslander 1922-7-30 76 Lassen Martin Springs, Eagle Lake Comment
  UC1100703  Eleocharis parishii Malcolm A. Nobs and S. Galen Smith 1949-8-20 1490 Lassen 1 mi S of, Long Creek Doyle Comment
  UC1758  Eleocharis parishii J. Burtt Davy Jun 17-24 1897 3292 Lassen Tule Confederacy, Honey Lake Valley Comment
  HSC22948  Eleocharis parishii John Pratt 1970-6-21 36 Lassen 1707 Comment
  CHSC96717  Elodea nuttallii Gordon Leppig 1998-7-13 970 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. Submersed near creek. 1970 Comment
  SEINET190966  Elymus A. A. Beetle 1941-6-28 2803 Lassen 10 mi W of Chester Rte 36 Comment
  CAS-BOT-BC221829  Elymus canadensis Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  JEPS123868  Elymus cinereus Lowell Ahart, John Dittes 2015-7-14 20327 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC7700  Elymus condensatus Beverley J. Wise 1969-5-23 130 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CAS-BOT-BC227492  Elymus elymoides Louella Bass 1973-6-3 EU 97 Lassen Elysian Valley 1325 Comment
  RSA647555  Elymus elymoides Marion P. Harthill 1971-6-21 200 Lassen Susanville Comment
  UCD61485  Elymus elymoides Beecher Crampton 1954-7-6 2075 Lassen Along US Hwy 395, 15 miles south of Ravendale. 1676 Comment
  UCD61621  Elymus elymoides R. Tofsrud 1947-7-1 217 Lassen East of Madeline. Comment
  CHSC13858  Elymus elymoides subsp. elymoides George Ellmore 1973-6-25 735 Lassen 10 m. from water on west side of Pelican Point on West Eagle Lake. 1560 Comment
  CHSC25916  Elymus elymoides subsp. elymoides K. R. Stern 1967-6-30 2446 Lassen West central side of Eagle Lake. 1554 Comment
  JEPS126496  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-12 CA 350 -74 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  CHSC112796  Elymus glaucus Lowell Ahart; John Dittes 2013-7-23 18893 Lassen About 30 feet northeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29902  Elymus glaucus Robin L. Ondricek 1978-7-22 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. 1584 Comment
  CAS-BOT-BC206730  Elymus glaucus subsp. glaucus Clare B. Hardham 1971-8-22 18401 Lassen Aspen Swamp, Diamond Mountain 2133 Comment
  CAS-BOT-BC206731  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 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 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  JEPS121791  Elymus spicatus B. Castro and L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. Comment
  UCR17282  Elymus spicatus Frank C. Vasek 1975-7-11 750711- 32 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UC1136823  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  CHSC112048  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2012-7-9 18297 Lassen On dry soil, on the south side of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS117564  Elymus trachycaulus subsp. trachycaulus Lowell Ahart, John Dittes 2010-7-19 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
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Oct 5 2019
  SEINET3129054  Elymus triticoides J. B. Davy 1897-1 sn Lassen Honey Lake Valley. Comment
  CHSC89  Ephedra viridis 1928-5-28 Lassen Antelope grade north of Susanville. 1615 Comment
  CHSC93239  Ephedra viridis John Dittes; Scott Chamberlain 2004-6-28 1022 Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow edge. 1496 Comment
  SD6464  Ephedra viridis R. M. Austin 1879-1 Lassen near Susanville Comment
  SEINET6628957 Image available Epilobium A. W. Harvilik 1967-1 4 Lassen jct. of 5.19 with road to Mutters Meadow 152 Comment
  CHSC113058  Epilobium brachycarpum Lowell Ahart; John Dittes 2013-7-22 18845 Lassen West margin of a duck field, about 10 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC507002  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  CHSC106066  Epilobium campestre Lowell Ahart; John Dittes 2010-7-31 16996 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC118849  Epilobium campestre L. P. Janeway 2015-8-9 11821 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01 - the road to Patterson Campground); 0.7 air-km west of Long Valley, 5.3 air-km northeast of Blue Lake. 2179 Comment
  JEPS117486  Epilobium densiflorum Lowell Ahart, John Dittes 2010-7-31 16994 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS87408  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  SJSU10675  Epilobium oregonense J. W. Tilden 1960-6-27 1517 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  UC1609447  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  UC726203  Epilobium pallidum A. A. Heller 1941-6-26 16233 Lassen on ridge w Nieubieber Comment
  CHSC96704  Epilobium palustre Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 538 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  RSA512825  Epilobium paniculatum J. T. Howell, Gordon H. True 1973-7-31 50028 Lassen Sierra Nevada: On road from Janesville to Thompson Peak, Diamond Range 1738 Comment
  NY1000570  Epilobium torreyi N. H. Holmgren 1980-7-3 9492 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale 1700 Comment
  RSA508633  Epipactis gigantea Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  CAS-BOT-BC57099  Equisetum X ferrissii Margaret Williams; Louella Bass 1972-10-22 EV 8 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CHSC27602  Equisetum laevigatum Jerry Snodgrass 1978-7-8 58 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. 1499 Comment
  CAS-BOT-BC57301  Equisetum laevigatum Barbara Shervanick 1974-5-7 1262 Lassen Highway 395, just south of Milford, Cascade Range 1371 Comment
  CHSC71896  Eragrostis pectinacea var. pectinacea Vernon H. Oswald; Lowell Ahart 1998-9-8 9578 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Near the highway. 1255 Comment
  SBBG69966  Eremogone congesta S. W. Hutchinson -Jun-1925 69 Lassen Eagle Lake 1554 Comment
  CAS-BOT-BC174264  Eremogone congesta var. simulans Walter Knight; Irja Knight; James Vale; Keith Wagnon 1981-5-24 4120 Lassen Between Adin and Willow Creek Comment
  CHSC72310  Eremogone congesta var. subcongesta L. P. Janeway; Glenn Clifton 1998-7-9 5730 Lassen Ridgetop saddle, 1.0 mi east of Diamond Mtn. 2215 Comment
  CAS-BOT-BC481938  Eremogone kingii var. glabrescens B. J. Hammerly 1941-6-21 51 Lassen 8 mi SE of Likely on Blue Lake Road 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-BC159998  Eremothera boothii subsp. alyssoides Philip A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  CHSC5009  Eriastrum signatum L. G. Bennett 1967-7-4 110 Lassen Deans Meadow, near Eagle Lake. 1706 Comment
  JEPS19760  Eriastrum signatum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6008 Lassen along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  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
  UC1136849  Ericameria bloomeri L. R. Short and J. Warren 1936-8-17 S- 497 Lassen Burgess Spr. Exp. Range Lassen Forest 1767 Comment
  UC747139  Ericameria bloomeri G. Thomas Robbins 1945-10-7 2153 Lassen se slope of Harvey Mt. 2-3 mi ne Burgess Spring; Lassen National Forest, Harvey Valley 1828 Comment
  CHSC23484  Ericameria nauseosa Wayne O. Baum 1971-7-29 71 -57 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC298172  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel on the road to Janesville 1219 Comment
  CAS-BOT-BC298176  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  JEPS21524  Ericameria nauseosa var. oreophila W. L. Jepson 1918-8-4 7808 Lassen Horse Lake 1554 Comment
  HSC68556  Ericameria nauseosa var. speciosa Gary Schoolcraft 1980-8-10 359 Lassen Along Post Camp Rd. N of Shinn Peaks 1890 Comment
  JEPS21518  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UC1483854  Ericameria parryi var. nevadensis G. Schoolcraft 1980-10-8 358 Lassen near intersection of Post Camp road Big Springs road 1694 Comment
  CAS-BOT-BC293206  Ericameria suffruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50665 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CAS-BOT-BC293526  Erigeron aphanactis var. aphanactis Margaret Williams 1974-7-27 74 -L-49 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC294492  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-6-10 11867 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CHSC52763  Erigeron bloomeri var. bloomeri L. P. Janeway 1990-7-4 3768 Lassen On knob ca 0.8 mi NE of Meadowview Peak. 1981 Comment
  CHSC64753  Erigeron bloomeri var. bloomeri Vernon H. Oswald 1995-5-31 6806 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.9 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  JEPS114758  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
  UC1228141  Erigeron bloomeri var. bloomeri Beecher Crampton 1960-6-18 5723 Lassen vicinity Blue Lake Ranch; southern Warner Mountains Comment
  UC1609105  Erigeron bloomeri var. bloomeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  CAS-BOT-BC295979  Erigeron divergens Clare B. Hardham 1969-8-28 17421 Lassen West of Janesville, Sierra Nevada Comment
  CAS-BOT-BC296848  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-11 7979 Lassen Big Valley Mts. Comment
  CHSC105252  Erigeron divergens Lowell Ahart; John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  UC1561865  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca .75 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  CAS-BOT-BC296850  Erigeron divergens Margaret Williams; Louella Bass 1972-10-22 EV 9 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  RSA78916  Erigeron divergens E. K. Balls, Percy C. Everett 1952-10-10 18144 Lassen 8 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  CHSC60816  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. 1728 Comment
  HSC28860  Erigeron eatonii var. plantagineus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19253 Lassen Harvey Valley near Cone Springs 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
  JEPS87524  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  JEPS94485  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1997-5-27 8520 Lassen 3.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat); Forest Route 38N04 1725 Comment
  SBBG8127  Erigeron eatonii var. plantagineus H. and M. Dearing 1938-6-30 2233 Lassen N of Susanville [Hwy 44] Comment
  UC1587058  Erigeron eatonii var. plantagineus G. Schoolcraft 1991-6-18 2162 Lassen along Hwy 139 4 mi w Said Valley Res. 1706 Comment
  UC1609229  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  UC1609303  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5515 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd. (Lassen A1) 0.5 mi sw Spaulding Tract Rd. (Rd. 518, 33N89)) 1810 Comment
  CHSC68735  Erigeron elegantulus Vernon H. Oswald; Lowell Ahart 1997-5-27 8492 Lassen West side of Hwy. 139 south of Willow Creek Guard Station, 0.9 mi south of Forest Road 38N04 to Coyote Flat. Along road and adjacent slope. 1577 Comment
  JEPS95073  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  CHSC80592  Erigeron filifolius var. filifolius Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10035 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  CHSC88611  Erigeron inornatus var. calidipetris Linnea Hanson 1998-8-11 378 Lassen Lassen National Forest. Off Hwy. A21 north of Westwood. 1524 Comment
  UC1523776  Erigeron inornatus var. inornatus Gary Schoolcraft 1981-7-21 529 Lassen about 2 mi along main road, se of Little Valley P.O. 1280 Comment
  UC485173  Erigeron inornatus var. inornatus T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  RSA713117  Erigeron linearis L. P. Janeway, B. Castro 2005-7-10 8485 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge. 1993 Comment
  CDA19737  Erigeron pumilus D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 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
  POM261457  Erigeron pumilus subsp. intermedius Alice Eastwood, John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  HSC100803  Erigeron pumilus var. intermedius Lowell Ahart, John Dittes 2010-7-31 16986 Lassen 3,330 ft. N of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1521 Comment
  JEPS94532  Erigeron pumilus var. intermedius Vernon Oswald and Lowell Ahart 1997-6-24 8648 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC1118181  Erigeron pumilus var. intermedius A. Simontacchi 1940-6-30 906 Lassen 2.2 mi ene of Ebey Lake; Halls Flat Quad. 1699 Comment
  UCD150396  Erigeron pumilus var. intermedius William Anderson 1963-6-3 s.n. Lassen Hartson Reservoir. Comment
  UCD18963  Erigeron pumilus var. intermedius R. E. Francis 1965-7-7 8 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 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
  CAS-BOT-BC241570  Eriogonum baileyi var. baileyi John Thomas Howell 1955-7-19 30817 Lassen East side of Beckwourth Pass 1493 Comment
  SEINET3836451 Image available Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-2 7772 Lassen Beckwith Pass 1463 Comment
  SEINET530700  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  UC762657  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-5 4672 Lassen Pass between Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC241569  Eriogonum baileyi var. baileyi E. K. Balls; P. C. Everett 1952-10-10 18139 Lassen 5.5 mi. n.e. of Litchfield, Hwy 395, between Susanville and Alturas 1280 Comment
  CAS-BOT-BC241832  Eriogonum caespitosum B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6567 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield 1330 Comment
  OBI48168  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Rav endale 1311 Comment
  NY242503  Eriogonum collinum N. H. Holmgren 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale. Comment
  NY242506  Eriogonum collinum A. J. Cronquist 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  NY242509  Eriogonum collinum A. A. Heller 1938-6-23 15208 Lassen On U.S. Highway #395 about midway between Mapes and Secret Valley. Comment
  UC1305745  Eriogonum collinum Noel H. Holmgren, James L. Reveal 1964-8-22 1723 Lassen 4 mi s Ravendale (48 mi ne of Susanville) Comment
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  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
  RSA739645  Eriogonum maculatum L. P. Janeway 2008-8-2 9532 Lassen Modoc Plateau just above th flats along the S side of Rusch Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  UC762681  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  CAS-BOT-BC263048  Eriogonum maculatum Peter H. Raven; Otto T. Solbrig 1958-6-17 13271 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  UC1949280  Eriogonum marifolium Barbara Ertter 1988-7-25 7862 Lassen ridge of Diamond Mts ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  CDA22621  Eriogonum microthecum var. ambiguum L. Ahart 2003-8-17 10518 Lassen About 100 yards west of the cattle guard, on the southeast side of Smoke Creek Ranch Road, about 8 - 9 miles (air) northeast of Highway 395, about 30 miles (air) northeast of Susanville. Comment
  JEPS104110  Eriogonum microthecum var. ambiguum Lowell Ahart 2003-8-17 10518 Lassen Small drainage, ca 100 yd w of the cattle guard, on the se side of Smoke Creek Ranch Rd, ca 8-9 mi (air) ne of Highway 395, ca 30 mi (air) ne of Susanville. 1450 Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  SEINET245664  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mi west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  UC1980557  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. Comment
  CAS-BOT-BC266364  Eriogonum nudum var. deductum Louella Bass 1973-6-14 EV 105 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC266367  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True 1973-8-1 50210 Lassen East slope of Diamond RAnge south of Susanville, Sierra Nevada 2164 Comment
  SEINET5330904  Eriogonum nudum var. deductum M. J. Williams, G. H. True; J. T. Howell 1973-6-28 73 -EV-1 Lassen Elysian Valley. 1372 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
  CHSC45484  Eriogonum nudum var. nudum Lowell Ahart; John Thomas Howell 1974-7-9 534 Lassen Along the edge of Eagle Lake Road, about 4 1/2 miles west of Susanville. 1584 Comment
  RSA518563  Eriogonum nudum var. nudum George K. Helmkamp 1990-9-23 G- 11 Lassen N of Ravendale 1677 Comment
  CAS-BOT-BC269924  Eriogonum nudum var. pubiflorum A. M. Vollmer; L. Beane 1953-7-1 30 Lassen Along Halls Flat road, beginning 6 mi. West of Susanville, to McArthur 1554 Comment
  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
  JEPS126468  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-27 CA 350 -071 Lassen Along Rice Canyon Road and into Rice Canyon. Comment
  HSC68914  Eriogonum nudum var. pubiflorum Gary Schoolcraft 1979-7-3 117 Lassen 1.0 mi. NW of rest area on Hwy. 395 1570 Comment
  NY762344  Eriogonum nudum var. pubiflorum B. Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km north of Route 299 1065 Comment
  NY282297  Eriogonum nummulare A. Tiehm 1978-10-14 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan. About 1.7 miles W of the Nevada Line. 1524.0 Comment
  CHSC64886  Eriogonum ovalifolium var. ovalifolium Vernon H. Oswald; Lowell Ahart 1995-6-19 6889 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. On a slope on the s side of the road at Mud Flat. 1350 Comment
  UCD55294  Eriogonum ovalifolium var. ovalifolium Ellen Dean; Gary Schoolcraft 2006-5-16 3115 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  CHSC60839  Eriogonum ovalifolium var. purpureum Vernon H. Oswald; Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. Edge of a vernal pool in a meadow. 1719 Comment
  OBI76937  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen Natl forest. NW of intersection of 29N02Y and the "B" spur. Fredonyer Pass quad T29N R10E sec 22 SE of NE 1630 Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  RSA59736  Eriogonum prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W of Madeline on road from Adin 1677 Comment
  UC1735877  Eriogonum prociduum Dean W. Taylor 1992-5-7 12543 Lassen Ash Valley, ca. 1.5 miles SW of Ash Valley cemetary Comment
  CHSC64845  Eriogonum prociduum var. prociduum Vernon H. Oswald 1995-6-26 6939 Lassen Modoc Plateau. Spooner Rd. ca. 0.3 - 0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  CHSC92718  Eriogonum spergulinum var. reddingianum L. P. Janeway; B. Castro 2005-7-10 8483 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  JEPS94560  Eriogonum spergulinum var. reddingianum Vernon Oswald and Lowell Ahart 1997-6-24 8596 Lassen s of Susanville (on the n side of Diamond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1685 Comment
  UC1032335  Eriogonum spergulinum var. reddingianum A. Simontacchi 1940-6-5 811 Lassen 3.9 mi nw Cone Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC272628  Eriogonum spergulinum var. reddingianum H. D. Ripley; R. C. Barneby 1943-6-13 5705 Lassen South of Milford 1859 Comment
  CHSC60914  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5674 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 an open sagebrush flat on the E side of the road. 1694 Comment
  CAS-BOT-BC262733  Eriogonum sphaerocephalum var. sphaerocephalum John Thomas Howell 1934-6-10 11864 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CAS-BOT-BC262734  Eriogonum sphaerocephalum var. sphaerocephalum Louella Bass 1983-6-10 2 -83 Lassen Lassen College Campus, Susanville Comment
  RSA125406  Eriogonum sphaerocephalum var. sphaerocephalum Arthur R. Kruckeberg 1954-6-22 3323 Lassen Frequent on sagebrush antelope brush slopes betw Susanville and Jonesville on Hwy 395 Comment
  CHSC13650  Eriogonum strictum var. anserinum M. S. Taylor 1974-6-20 256 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1554 Comment
  CAS-BOT-BC262769  Eriogonum strictum var. proliferum H. D. Ripley; R. C. Barneby 1943-6-13 5711 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC262770  Eriogonum strictum var. proliferum Doris Kildale Gillespie 1930-5-13 9365 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC267885  Eriogonum umbellatum Marcus E. Jones 1897-6-26 s.n. Lassen Perkin's Ranch, Susanville 1463 Comment
  CAS-BOT-BC267893  Eriogonum umbellatum H. D. Ripley; R. C. Barneby 1943-6-13 5413 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC267894  Eriogonum umbellatum A. M. Vollmer; L. Beane 1953-7-1 102 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
  RSA0029339  Eriogonum umbellatum John F. Emmel 1991-7-22 1189 Lassen Long Valley: along Hwy 395, 3.8 road mi north of junction with Hwy 70. 1494 Comment
  CHSC59788  Eriogonum umbellatum var. modocense Mary Meyer 1980-5-7 Lassen Scattered beneath sagebrush on Pete's Mesa. 1447 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
  NY399279  Eriogonum umbellatum var. nevadense L. Bass 1983-6-10 383 Lassen About 3 miles east of Susanville, Center Road near Leavitt lane Comment
  NY399395  Eriogonum umbellatum var. nevadense G. Schoolcraft 1982-7-7 771 Lassen Fort Sage Mountains 1950.7 Comment
  NY399401  Eriogonum umbellatum var. nevadense N. H. Holmgren 1970-6-25 4375 Lassen North end of Petersen Mountain, near U.S. 395, 8 miles north of junction with California 70 (Hallelujah Junction) 1524.0 Comment
  POM105088  Eriogonum umbellatum var. nevadense Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1483832  Eriogonum umbellatum var. nevadense G. Schoolcraft 1979-7-5 126 Lassen 5.2 mi. from Horne Ranch Road (intersection up Observation Lookout Road) 2286 Comment
  UC773862  Eriogonum umbellatum var. nevadense L. R. Short and J. Warren 1936-6-12 S- 432 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1804 Comment
  CAS-BOT-BC262365  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC105234  Eriogonum vimineum Lowell Ahart; John Dittes 2010-7-31 17018 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  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
  JEPS19807  Eriogonum vimineum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6011 Lassen ne, along U.S. Hghway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  POM105137  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  POM203843  Eriogonum vimineum J. T. Howell 1934-7-8 12493 Lassen Spaldings Resort; Eagle Lake Comment
  UC1587101  Eriogonum vimineum G. Schoolcraft 1991-7-31 2202 Lassen along Karlo Road about 1/2 mi e Hwy. 395 1356 Comment
  CAS-BOT-BC262356  Eriogonum vimineum Margaret Williams; Louella Bass 1972-10-22 EV 1 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  NY399577  Eriogonum vimineum H. D. D. Ripley 1943-6-15 5763 Lassen Northeast of Viewland 1341.1 Comment
  CHSC23514  Eriophyllum lanatum Wayne O. Baum 1971-7-6 71 -48 Lassen E. slope of Gallatin Peak. 1950 Comment
  CDA5861  Eriophyllum lanatum var. achilleoides Gary Schoolcraft 1991-7-3 2199 Lassen East slope of widow mountain. Comment
  UC896366  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen on a ridge e Fredonyer Pass (on Highway #36) 1645 Comment
  CAS-BOT-BC301530  Eriophyllum lanatum var. integrifolium Louella Bass 1973-5-25 39 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC301531  Eriophyllum lanatum var. integrifolium Louella Bass 1983-6-10 8 -83 Lassen Lassen College Campus, Susanville Comment
  POM66833  Eriophyllum lanatum var. integrifolium Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1118288  Eriophyllum lanatum var. integrifolium H. P. Hagge 1929-9-11 18 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. (Mb.1) 1828 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
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  UC507013  Eriophyllum lanatum var. integrifolium George A. Fischer and Irwin H. Johnson 1933-7-12 F- 200 Lassen Grass Valley Lassen National Forest, Grass Valley 1697 Comment
  JEPS107866  Erodium cicutarium Lowell Ahart, John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS124539 Image available Erodium cicutarium B. Corwin 1964-6-30 110 Lassen 19 miles no. of junction of rte. 395 and Alt. 40 in rte. 395, 100 yds before Western Pacific Railroad crosses road. Comment
  POM83000  Eryngium alismifolium Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1088542  Eryngium alismifolium Ornduff 1958-7-22 5014 Lassen 6.6 mi. n. Ravendale (along Hwy. 395) Comment
  UC21011  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3382 Lassen Honey Lake Valley Comment
  UC477504  Erysimum capitatum var. capitatum Geo. O. Fisher 1928-6-21 28 Lassen Lassen <National> Forest 1615 Comment
  SBBG15427  Erythranthe breweri H. and M. Dearing 1939-7-1 2244 Lassen 17 mi W of Susanville 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
  SEINET13768666 Image available Erythranthe guttata Francis W. Pennell 1940-1 25777 Lassen Route 36, 6 miles east of Westwood. 1585 Comment
  CHSC71395  Erythranthe inflatula Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9263 Lassen Pittville Rd. (Lassen 111, FS 36N01) on the southeast edge of Poison Lake 1.9 mi N of Hwy. 44. On the bank of a pond on the east side of the railroad, which parallels the lake shore at this point. 1709 Comment
  CHSC14065  Erythranthe primuloides J. Grove 1973-7-25 Lassen Collected at Collemans Lake along fill dam of lake. 1524 Comment
  OBI76994  Erythranthe pulsiferae Anthony Baniaga 2011-6-30 403 Lassen Lassen Natl Forest. Fredonyer Pass quad T29N R10E sec 23 NE of SE 1526 Comment
  CAS-BOT-BC403146  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-16 8344 Lassen Janesville Comment
  JEPS51782  Eschscholzia californica W. L. Jepson 1918-8-2 7774 Lassen Beckwith Pass 1463 Comment
  UC1561401  Eschscholzia californica Barbara Ertter 1987-7-24 7297 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  UC725540  Eschscholzia californica A. A. Heller 1941-6-26 16228 Lassen a short distance w county line near Adin (Modoc County) (along U.S. Hwy 299) Comment
  CAS-BOT-BC403152  Eschscholzia californica Mrs. H. C. Cantelow 1935-6-8 926 Lassen 13 mi. W. of Bieber Comment
  RSA149124  Eschscholzia californica var. crocea I. L. Wiggins, Dorothy B. Wiggins 1961-6-16 16531 Lassen Along Highway 299, overlooking Big Valley 1250 Comment
  UC1562582  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ca 10 airmi due s of, (ridge of Diamond Mts ca 1.5 mi e of Diamond Peak) Susanville; Diamond Mts. 2255 Comment
  UC1586591  Euclidium syriacum Vernon H. Oswald 1991-5-28 4616 Lassen 5 mi ne of Bieber (Wayman Barn at w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area 1264 Comment
  JEPS124752 Image available Euphorbia serpillifolia Peter Schultz 1967-7-12 76 Lassen 14.9 miles southeast of Adin on state highway 139; 1/4 mile west of Willow Creek Campground. Comment
  CHSC64874  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1995-6-19 6881 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  JEPS100337  Eurybia integrifolia Dean W. Taylor 2001-7-19 17843 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  CHSC71858  Euthamia occidentalis Vernon H. Oswald; Lowell Ahart 1998-9-8 9579 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  CAS-BOT-BC278434  Festuca idahoensis John Thomas Howell 1976-7-20 52006 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC278437  Festuca idahoensis John Thomas Howell 1934-7-6 12430 Lassen Hall's Flat Comment
  CHSC99481  Festuca idahoensis Lowell Ahart; John Dittes 2008-6-19 14880 -A 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
  RSA585079  Festuca idahoensis J. T. Howell 1934-7-7 12471 Lassen Pine Creek Flat. Comment
  RSA647539  Festuca idahoensis Marion P. Harthill 1972-6-17 822 Lassen Madeline. 1677 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
  UC1024704  Festuca idahoensis Leo Whitney 1933-7-10 2140 Lassen ca 25 mi w Eagle Lake (upper end); Lassen National Forest, Halls Flat 1737 Comment
  UC1609256  Festuca idahoensis Vernon H. Oswald and Lowell Ahart 1993-7-8 5664 Lassen 1.9 mi n Hwy. 44 (Pittville Rd (Lassen 111, 36N01), between the road and railroad, on se edge of Poison Lake); Poison Lake 1709 Comment
  UC60788  Festuca idahoensis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  UCD65965  Festuca idahoensis Beecher Crampton 1960-6-18 5715 Lassen N. E. Lassen County: Southern Warner Mountains, 1.25 miles north of Blue Lake, in vicinity of Blue Lake Ranch area. 1981 Comment
  CAS-BOT-BC278433  Festuca idahoensis Clarence R. Quick 1962-6-17 62 -30 Lassen Western Pacific RR., S. of Halls Flat, Susanville-Pittville road near Blacks Mt. Experimental Station 1706 Comment
  UC53432  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
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Jun 24 2009
  CAS-BOT-BC278932  Festuca rubra John Thomas Howell 1934-7-6 12458 Lassen Harvey Valley Comment
  UC1024944  Festuca rubra Leo Whitney 1935-6-27 3327 Lassen 1 mi n Camp 10, Fruit Grower's Supply Company; Lassen National Forest Comment
  UCD66352  Festuca rubra L. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Comment
  JEPS4950  Fritillaria pudica Louise Scroggy 1918-3-24 Lassen 1/4 mi above Pit River (on Dixie Valley Road, 2 mi above Rocky Comfort School House in nw corner of Lassen Co., 15 mi n of boundary line); Dixie Valley Road Comment
  CDA5850  Gaillardia aristata T. C. Fuller 1965-8-25 14036 Lassen east side of Highway 395 to Doyle, 30 paces north of culvert # 45-00, 2.4 miles north of Hallelujah Junction. 0 Comment
  CHSC117191  Galium aparine Lowell Ahart; John Dittes 2016-6-7 21020 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  RSA121072  Galium aparine L. R. Short, W. Gansberg 1936-6-2 S- 367 Lassen Lassen forest. MDM, Burgess Spr. Exp. Range. 1851 Comment
  UC1523745  Galium bolanderi Gary Schoolcraft 1981-7-21 543 Lassen ne Pittville (along Hwy 299) 1249 Comment
  POM203777  Galium bolanderi J. T. Howell 1934-7-3 12381 Lassen Near Dry Lake. Mtns. SE of Bieber. Comment
  POM68457  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1479581  Galium multiflorum G. Schoolcraft 1980-5-30 245 Lassen sw Herlong; Bird Canyon 1432 Comment
  UC585184  Galium multiflorum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1740 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  CHSC60407  Galium trifidum var. pacificum Mary Ann Showers 1992-6-13 2552 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC23503  Gayophytum Wayne O. Baum 1971-7-12 71 -75 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC36176  Gayophytum diffusum Jerry Snodgrass 1978-6-28 1 Lassen Lower Dry Lakes e of Eagle Lake. 1645 Comment
  UCD55278  Gayophytum diffusum Ellen Dean 2006-5-15 3093 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
  UC1258488  Gayophytum diffusum subsp. parviflorum G. Schoolcraft 1979-7-3 116 Lassen up road to Observation Lookout 4.7 mi from Horne Ranch Road intersection 2103 Comment
  POM204160  Gayophytum helleri var. glabrum J. T. Howell 1934-7-9 12532 Lassen Harvey Valley. Comment
  CHSC25091  Gayophytum heterozygum K. R. Stern 1967-7-1 2469 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  RSA144899  Gayophytum heterozygum J. W. MacSwain 1959-8-12 59 -148 Lassen 2 miles north of Bridge Camp, Hot Creek. 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
  CHSC6191  Gayophytum ramosissimum R. Gein 1946-6-12 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  UC726252  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen 2 mi e Westwood 1524 Comment
  UC803944  Gentiana newberryi G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 3998 Lassen nw of Susanville; Hog Flat 1676 Comment
  RSA454467  Geum canescens Roch Well 1923-7-1 s.n. Lassen 12 miles from Eagle Lake Comment
  CAS-BOT-BC143568  Geum triflorum John Thomas Howell 1934-7-6 12441 Lassen Harvey Valley Comment
  CHSC89723  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  JEPS94554  Geum triflorum Vernon Oswald and Lowell Ahart 1997-6-24 8649 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC1609243  Geum triflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5603 Lassen ne of Poison Lake (Road 35N04 at Aspen Well, n of Hwy 44 on the nw edge of Harvey Valley); Harvey Valley, Aspen Well 1725 Comment
  RSA0086587  Gilia Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  CHSC25117  Gilia capitata subsp. mediomontana D. L. Stites 1967-7-4 104 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  POM72193  Gilia congesta Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC48652  Gilia modocensis Vernon Oswald 1986-5-28 2078 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  UC604679  Gilia modocensis Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  UC1562812  Gilia salticola Barbara Ertter with Gary Schoolcraft 1987-6-16 7189 Lassen on s side Hot Springs VABM (ne side Honey Lake, Skeedaddle Mountains); Skeedaddle Mountains, s side Hot Springs VABM 2286 Comment
  CHSC60756  Gilia sinuata Vernon H. Oswald; Lowell Ahart 1993-6-14 5545 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On dunes on the N side of the road. 1566 Comment
  CHSC115832  Glyceria borealis Lowell Ahart; John Dittes 2015-7-14 20326 Lassen In Big Vallley Canal, on the east side of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1269 Comment
  OBI77053  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  CAS-BOT-BC280598  Glyceria elata John Thomas Howell; Gordon H. True 1973-7-31 50046 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  CHSC117293  Gnaphalium palustre Lowell Ahart; John Dittes 2016-7-13 21108 Lassen Near where the drainage inters the pond, about 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1536868  Gnaphalium palustre G. H. True Jr. 1938-7-14 956 Lassen near Janesville 1280 Comment
  CAS-BOT-BC302592  Gnaphalium palustre George W. Gillett 1957-9-4 1124 Lassen Lassen Volcanic National Park. Widow Lake 2072 Comment
  CAS-BOT-BC302596  Gnaphalium palustre Clare B. Hardham 1971-8-22 18421 Lassen Diamond Mountain, north slope 2225 Comment
  CHSC117521  Gratiola ebracteata Lowell Ahart; John Dittes 2016-7-13 21129 Lassen Nortewest edge of the pond, 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. 1289 Comment
  JEPS28800  Gratiola ebracteata George W. Gillett 1957-9-4 1126 Lassen e margin Widow Lake (near inlet, Lassen Volcanic National Park); Lassen Volcanic National Park, e margin Widow Lake 2072 Comment
  UC1567419  Grayia spinosa G. Schoolcraft 1989-5-31 1882 Lassen e. end of Skedaddle's (near rd. to n.) 1280 Comment
  SEINET4175755  Grayia spinosa F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  CHSC7652  Grindelia squarrosa Beverley J. Wise 1968-8-28 20 Lassen 1.5 mi. north on Crazy Harry Canyon Road off Hwy 36 (Las. Co. Rd. no. 230). 1584 Comment
  SEINET8770843 Image available Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Turnoff to Janesville along Hwy 395 Comment
  UC1776686  Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Near turnoff to Janesville along Hwy 395 1280 Comment
  CDA3429  Gypsophila paniculata T. C. Fuller 1971-10-6 19933 Lassen Northeast side of Highway 395 to Susanville, 1 mile north of Janesville. 0 Comment
  UC1220391  Gypsophila paniculata var. paniculata T. C. Fuller 1963-7-16 11013 Lassen Janesville; hillslope n of cemetary Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  UC699734  Hackelia californica Farris Farris 1936-6-15 Lassen Eagle Lake Summit 1981 Comment
  CAS-BOT-BC231158  Hackelia cusickii Mrs. A S. Baldwin 1894-6-1 s.n. Lassen Lava Beds Comment
  UC1537393  Hackelia floribunda Gordon H. True Jr. 1936-6-27 562 Lassen n slope of Hot Spring Mountain 1828 Comment
  CDA3145  Halogeton glomeratus J. T. Howell, T. H. Kearney 1951-8-2 28229 Lassen Honey Lake Valley near Herlong. Comment
  UCD165252  Halogeton glomeratus John M. Tucker 1950-7-26 1978 Lassen Southeastern part of county; Herlong, CA, Herlong Ordnance Depot; (Exact location unknown, coordinates estimated by label maker). Comment
  CDA3151  Halogeton glomeratus G. Randall 1953-9-2 Lassen Amedee. 0 Comment
  UCD98891  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  UC303064  Helenium bigelovii Pearl Safford Lassen Susanville [uncertain locality] Comment
  SJSU8893  Helianthella californica var. nevadensis W. Savage 1971-7-20 723 Lassen c. 2 mi N of Milford near W side Honey L 1264 Comment
  JEPS34877  Helianthus cusickii Joseph Grinnell 1929-6-8 Lassen s side Pete's Valley ((Valley which extends from Horse Lake to plains w of Shaffer Mt.)) Comment
  CDA6549  Helianthus cusickii T. C. Fuller 1959-7-7 2910 Lassen Highway 395 and railroad, 5 miles north of road to Wendel. 0 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
  CHSC92142  Heliotropium curassavicum L. P. Janeway 2005-8-27 8527 Lassen High Cascade Range. Northwest shore of Eagle Lake; east end of Sandy Beach, west side of Rocky Point. Gently sloping southwest-facing shoreline. 1550 Comment
  CAS-BOT-BC314967  Hemizonella minima John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49201 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  JEPS94598  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1997-5-27 8525 Lassen on Forest Route 38N04 4.7 mi ne Hwy. 139; Coyote Flat 1798 Comment
  HSC63725  Hesperochiron californicus Teresa Prendusi 1980-4-29 Lassen Five Springs Mtn. 1402 Comment
  SEINET5498645  Hesperochiron californicus D. E. Brix 1962-5-2 s.n. Lassen Spring 2 miles from Junction of Red Rock Rd. and Hwy 395 1433 Comment
  UC1137714  Hesperochiron pumilus L. R. Short 1936-4-28 S- 329 Lassen Lassen Forest, Harvey Valley 1706 Comment
  CAS-BOT-BC180030  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Ash Creek Public Camp, off rd. from Adin to Madeline. Comment
  RSA122625  Hesperochiron pumilus L. R. Short 1936-4-28 S- 329 Lassen Harvey Valley. Lassen Forest. 1707 Comment
  JEPS17743  Hesperolinon micranthum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5416 Lassen along Smoke Creek Ranch Rd. 6 mi e jnct. with U.S. 395; Bull Flat, Deep Creek 1428 Comment
  NY1002355  Hesperolinon micranthum J. T. Howell 1934-6-10 11887 Lassen 12 miles north of Susanville, on road to Horse Lake Comment
  POM87380  Hesperolinon micranthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC60155  Hesperostipa comata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  UCD85294  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an sagebrush flat, along US Hwy 395, 1 mile east of Johnstonville. Comment
  CHSC23522  Hesperostipa comata subsp. intermedia Wayne O. Baum 1971-7-12 71 -67 Lassen E. slope of Gallatin Peak. 1950 Comment
  UCR244106  Heterotheca villosa Jim Andre, G. L. Clifton 1993-6-9 19697 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CHSC72301  Heterotheca villosa var. minor L. P. Janeway; Glenn Clifton 1998-7-9 5740 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
  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
  UC73894  Heterotheca villosa var. minor J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley; Honey Lake Valley Comment
  JEPS28670  Hieracium albiflorum George W. Gillett 1957-7-24 895 Lassen dry flats between Cameron Meadow and Snag Lake; Lassen Volcanic National Park 1950 Comment
  UC135018  Hieracium albiflorum T. S. Brandegee 1892-7-2 s. n. Lassen Susanville Comment
  CAS-BOT-BC312415  Hieracium albiflorum Alice Eastwood 1912-8-22 1781 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  UC1069594  Hieracium argutum H. P. Hagge 1929-9-18 39 Lassen Logan Mountain Eagle Lake Quad., Logan Mountain Comment
  UC1523774  Hieracium scouleri Gary Schoolcraft 1981-7-8 500 Lassen w of Eagle Lake; Coulthurst Flat 1828 Comment
  CHSC75503  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1999-6-9 9737 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395, springy marsh surrounded by sagebrush scrub. 1353 Comment
  CAS-BOT-BC280698  Holcus lanatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49501 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC112406  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18728 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC99281  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS87501  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  JEPS93830  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1998-6-4 9140 Lassen s of Constantia (Red Rock Road at its junction with Hwy 395); Red Rock Road at its junction with Hwy 395 1365 Comment
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  UCD85278  Hordeum brachyantherum A. A. Beetle 1941-6-28 2818 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  CHSC5255  Hordeum jubatum 1944-7-11 Lassen Eagle Lake. 1615 Comment
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  CDA2191  Hordeum marinum subsp. gussoneanum T. C. Fuller 1963-6-1 10622 Lassen West side of road to Susanville, 2.0 miles south of Pittville. 0 Comment
  UC538008  Horkelia fusca subsp. tenella Leo Whitney 1938-7-3 3038 Lassen Bogard Ranger Station Lassen National Forest 1767 Comment
  CAS-BOT-BC536179  Horkelia fusca var. parviflora M. S. Taylor; B. Hammond 1982-7-8 4789 Lassen Along spur road ca. 1/3 mile west of Scott Road, ca. 1.5 miles NE of Beckwourth Pass 1463 Comment
  CAS-BOT-BC536220  Horkelia fusca var. parviflora Louella Bass 1973-6-15 EV- 112 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CAS-BOT-BC143983  Horkelia fusca var. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  CAS-BOT-BC55478  Hornungia procumbens Arnold Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north northwest of Wendel. 1231 Comment
  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
  JEPS1628  Hydrophyllum capitatum var. alpinum Leland S. Smith Jun 1925 Lassen near Hayden Hill; Modoc National Forest 1219 Comment
  CHSC13636  Hypericum formosum var. scouleri 1974-7-10 283 Lassen Abundant along creek in meadow ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC41841  Hypericum formosum var. scouleri P. V. Caldwell 1972-7-13 271 Lassen Eagle Lake. Growing scattered on edge of upper Papoose Creek above forest road to Papoose Meadows. Comment
  CHSC4881  Hypericum formosum var. scouleri Bill Wilson 1967-7-6 47 Lassen Collected at Upper Murrer Meadow, 2.5 mi. E of Eagle Lake Biological Station, 10 mi. N of Susanville. 1524 Comment
  POM86608  Hypericum formosum var. scouleri Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  UC124652  Hypericum formosum var. scouleri W. E. Bryant Lassen Comment
  RSA746512  Hypericum perforatum K. M. Meyer, A. Townesmith 2007-7-19 140 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  SJSU10961  Hypericum scouleri H. L. Buckalew 1961-7-10 Lassen Blue L Comment
  CHSC7707  Idahoa scapigera Beverley J. Wise 1969-4-10 37 Lassen 1.5 mi. north on Hwy 139. 1341 Comment
  UC117500  Idahoa scapigera T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  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
  JEPS128411  Iliamna bakeri Jennifer Mueller 2017-8-15 CA 370 -263 Lassen Below Tuledad Valley Ranch take the access road into the Cottonwood Mountains towards the Dodge Fire. Comment
  NY52522  Iliamna bakeri G. Schoolcraft 1984-8-27 1371 Lassen Eastern slopes of Little Hat Mtn. 1981.2 Comment
  NY52524  Iliamna bakeri G. Schoolcraft 1983-8-22 1142 Lassen Along Ash Valley Rd. west of Madeline 1737.4 Comment
  JEPS816  Ipomopsis aggregata Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  UC106649  Ipomopsis aggregata T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  RSA0063614  Ipomopsis aggregata subsp. formosissima G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 256 Lassen Forest: Lassen. 1784 Comment
  RSA181824  Iris missouriensis H. N. Metcalf, Jack C. Wilson 1965-7-1 65 -23 Lassen Southeast of Susanville, on back road to Janesville Comment
  CAS-BOT-BC324779  Iva axillaris M. S. Taylor 1982-8-19 5022 Lassen E side of Highway 395 ca. 4 miles north of its junction with Highway 70 at Hallalujah Junction 1493 Comment
  RSA126721  Iva axillaris subsp. robustior Peter H. Raven, Otto T. Solbrig 1958-6-17 13265 Lassen Along Hwy 395, 11.8 miles NE of Litchfied Comment
  RSA523308  Iva axillaris subsp. robustior Gordon H. True Jr. 1936-6-21 517 Lassen SE of Litchfield, Honey Lake Valley. 1220 Comment
  RSA0011495  Iva axillaris subsp. robustior R. F. Thorne, Larry E. DeBuhr 1975-8-22 46970 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  UC2062433  Ivesia baileyi var. baileyi Barbara Ertter with Gary Schoolcraft 1987-6-16 7200 Lassen Skeedaddle Mountains on NE side of Honey Lake; tuffaceous at head of Wendel Canyon. Comment
  CAS-BOT-BC148543  Ivesia paniculata James R. Shevock 1986-7-20 11740 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles west of Madeline and U.S. highway 395 - Modoc Plateau 1550 Comment
  CHSC63416  Ivesia paniculata V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6352 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  JEPS81018  Ivesia paniculata Thomas W. Nelson and Jane P. Nelson 1980-7-6 5984 Lassen 16 mi e Adin (along Adin-Madeline Rd); Ash Valley; Ash Valley, Lassen Co. 1554 Comment
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Nov 22 2007
  JEPS94475  Ivesia paniculata Vernon H. Oswald and Lowell Ahart 1997-5-27 8494 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on n side of a creek paralleling the road); Forest Route 38N04 1546 Comment
  RSA614443  Ivesia paniculata M. L. Carlson 1996-6-11 s.n. Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET3860195  Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 mi E of Adin.; 0 1554 Comment
  SEINET4855366  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  UC1567359  Ivesia paniculata G. Schoolcraft 1980-7-14 306 Lassen w of Madeline; Ash Valley 1548 Comment
  UC1594844  Ivesia paniculata J. Stephen Shelly and Ginger V. King 1985-6-29 1029 Lassen Adin-Madeline Rd. Ash Valley (15.4 mi w of U.S. Hwy 395) 1554 Comment
  SEINET6792604  Ivesia paniculata M. J. Williams 1970-7-4 595 Lassen Near Ash Creek. 1280 Comment
  JEPS109644  Ivesia sericoleuca Dean W. Taylor 2002-6-21 18168 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  UC1924587  Juncus Debra Valov 2006-5-28 2006017 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC30562  Juncus balticus Sori H. Shad 1970-7-1 5 Lassen Found on the side of spring above Gallaten Beach. 2438 Comment
  UC1133735  Juncus balticus A. Simontacchi 1940-5-17 738 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1142944  Juncus balticus subsp. ater A. L. Hormay 1941-6-18 4 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UCD141331  Juncus balticus subsp. ater John Thomas Howell 1959-9-23 34881 A Lassen North end of Juniper Lake. 2057 Comment
  JEPS126567  Juncus bufonius var. congestus Lowell Ahart, John Dittes 2016-6-7 20987 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hill at the southern slope of Big Valley. Comment
  CHSC117204  Juncus bufonius var. occidentalis Lowell Ahart; John Dittes 2016-6-7 20988 Lassen West edge of pond, 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC66275  Juncus bufonius var. occidentalis Vernon H. Oswald; Lowell Ahart 1996-6-24 7838 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow just S of the cabins. 1633 Comment
  UCR88026  Juncus confusus J. T. Howell, G. H. True 1973-8-1 50171 Lassen Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  RSA129410  Juncus dubius H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow. 1524 Comment
  JEPS96098  Juncus dudleyi Vernon H. Oswald and Lowell Ahart 1996-6-17 7817 Lassen Bizz Johnson Trail at 6.0 milepost e Devils Corral Trailhead (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
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Feb 14 2008
  UC1601869  Juncus ensifolius Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
  JEPS94376  Juncus hemiendytus var. hemiendytus Vernon Oswald and Lowell Ahart 1997-6-24 8653 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  HSC97877  Juncus hemiendytus var. hemiendytus Vernon H. Oswald, L. Ahart 1996-6-24 7852 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1), 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 Comment
  POM111106  Juncus mexicanus Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC61072  Juncus nevadensis Vernon H. Oswald; Lowell Ahart 1993-8-3 5745 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. SW edge of the swamp. 1932 Comment
  RSA0105591  Juncus nevadensis var. nevadensis Lowell Ahart, John Dittes 2013-7-23 18906 Lassen On the southwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC103607  Juncus orthophyllus Thomas W. Nelson, Jane Nelson 1985-8-10 8002 Lassen Along north side of Silver Lake 1829 Comment
  POM110894  Juncus orthophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC81148  Juniperus occidentalis Doris Kildale Gillespie 1930-5-12 9322 Lassen 2 miles north of Susanville on road to Alturas Comment
  HSC1267  Juniperus occidentalis L. H. Myers 1963-4-10 40 Lassen 1.0 mi. S of Janesville 1280 Comment
  HSC24602  Juniperus occidentalis K. P. St. John 1965-5-6 38 Lassen 15 mi. N of Litchfield on Hwy. 395 Comment
  UC1134300  Juniperus occidentalis A. Simontacchi 1940-6-5 820 Lassen 8.0 mi wnw of Harvey Valley Ranger Station; Halls Flat Quad., Lassen National Forest Comment
  UC1134311  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ene Chats; Sierraville Quad. 1569 Comment
  UC333780  Juniperus occidentalis unknown 1893-5-28 Lassen Susanville Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  UCR148432  Juniperus occidentalis David A. Charlet 1994-7-6 1923 Lassen Great Basin, Susanville, corner of Main and Fair Streets 1271 Comment
  SEINET10966161  Juniperus occidentalis Mary Susan Taylor 1974-5-4 Taylor 217 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  SEINET5334982  Juniperus occidentalis W. Priest 1956-4-22 s.n. Lassen about 2 miles north of Susanville 1524 Comment
  SEINET10932817  Juniperus occidentalis subsp. australis Mary Susan Taylor 1982-5-29 Taylor 4570 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  RSA647569  Juniperus occidentalis var. occidentalis Marion P. Harthill 1972-6-17 812 Lassen Ravendale 1768 Comment
  UCR4284  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-9-1 650901- 01 Lassen On Karlo Road 3.6 mi north of the junction of Karlo Road & Litchfield Road, north of Susanville 1355 Comment
  UCR4289  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-8-31 650831- 05 Lassen c. 45 mi north of Susanville 1662 Comment
  UCD133871  Juniperus osteosperma John Thomas Howell 1961-9-26 36969 Lassen Beckworth Pass east side. 1554 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 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
  CHSC60920  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5657 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  UC773943  Kelloggia galioides L. R. Short and D. Gish 1936-6-10 S- 379 Lassen Burgess Spring Experiment Range; Lassen National Forest 1813 Comment
  CAS-BOT-BC180801  Kochia scoparia Louella Bass 1981-12-1 s.n. Lassen Standish 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
  POM113359  Koeleria macrantha Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  RSA702594  Koeleria macrantha L. P. Janeway 2004-6-26 8149 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UCD85987  Koeleria macrantha R. Tofsrud 1947-7-1 214 Lassen 13 miles E of Madeline. Comment
  CHSC71864  Lactuca saligna Vernon H. Oswald; Lowell Ahart 1998-9-8 9574 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  JEPS36716  Lactuca tatarica subsp. pulchella W. L. Jepson 1918-8-2 7781 Lassen lower bench of Long Valley Creek; Beckwith Pass, Long Valley Creek 1463 Comment
  UCD133500  Lactuca tatarica subsp. pulchella W. L. Jepson 1918-8-2 s.n. Lassen lower bench of Long Valley Creek. Beckwith Pass. 1463 Comment
  UCD106192  Ladeania lanceolata D. P. Browne 1918-5-1 s.n. Lassen Hackstaff. Comment
Read comments
Jun 30 2012
  UC1924221  Lagophylla ramosissima Debra Valov 2004-6-8 2004254 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CDA8086  Lagophylla ramosissima T. C. Fuller 1964-10-7 12692 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber. 0 Comment
  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
  RSA795323  Lagophylla ramosissima subsp. ramosissima L. Ahart, John Dittes 2010-7-31 16997 Lassen On the north side of the road, about 5 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  CDA19744  Layia glandulosa D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC106679  Layia glandulosa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC5215  Layia glandulosa 1944-6-28 Lassen Eagle Lake. 1584 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
  CHSC71072  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1998-5-22 9109 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  UC1609230  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  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
  RSA170169  Lemna minor W. L. Jepson 1918-8-16 8000 Lassen Merrillville 1524 Comment
  RSA318598A  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC75476  Lepidium chalepense Vernon H. Oswald; Lowell Ahart 1999-6-9 9749 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: on the dam of the reservoir. 1353 Comment
  NY23186  Lepidium dictyotum A. Tiehm 1980-5-29 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north-northwest of Wendel 1231.4 Comment
  CDA3793  Lepidium latifolium Lee Wheeler 1962-8-15 Lassen Ravendale area. 0 Comment
  CDA3797  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen Madelaine Plains , on east side of road, Highway 395 to Litchfield, 4.7 miles south of Ravendale. 0 Comment
  CHSC13634  Lepidium perfoliatum M. S. Taylor 1974-7-8 259 Lassen On e side of RT A3, ca. 1 mi n of Honey Lake, ca. 1 mi s of Standish, Honey Lake Wildlife Refuge. Comment
  CHSC36487  Lepidium perfoliatum Margaret E. Halloran 1982-6-2 1 Lassen Ca. 2 mi e jct of Hwy 139 and 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
  UC1126702  Lepidium perfoliatum E. Sawyer 1935-6-27 235 Lassen Long Valley Sierraville Quad. 1310 Comment
  UCD115855  Lepidium perfoliatum Grady L. Webster 1989-5-13 7713 Lassen 2.5 mi E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC12815  Lepidium perfoliatum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. Comment
  UCD63835  Leptochloa fusca subsp. fascicularis Chandler Jensen 1959-9-8 Lassen Honey Lake Valley near Standish. 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
  UC526131  Leptodactylon pungens John Thomas Howell 1934-7-9 12524 Lassen Pine Creek Flat Comment
  UC1226013  Leptodactylon pungens Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8472 Lassen 50 mi se Susanville 1371 Comment
  JEPS126521  Leptosiphon bolanderi Lowell Ahart, John Dittes 2016-6-7 20979 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 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
  RSA713121  Leptosiphon ciliatus L. P. Janeway, B. Castro 2005-7-10 8480 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01. 1859 Comment
  CHSC4771  Leptosiphon harknessii R. Carter 1967-6-27 562 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology station. 1584 Comment
  GMDRC6950  Leptosiphon harknessii J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31424 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  HSC25423  Leptosiphon harknessii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19252 Lassen Harvey Valley near Cone Springs 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
  UCD159576  Leucanthemum vulgare D. S. Park 2011-6-27 313 Lassen Near Goodrich Mt. Between Rt. 36 and small stream. 1556 Comment
  UC1553404  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  JEPS87470  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  UC584329  Leymus cinereus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2227 Lassen 6 mi s Ravendale 1660 Comment
  UC1131756  Leymus triticoides A. Simontacchi 1940-8-30 912 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC436030  Ligusticum grayi B. C. Cain 1925-8-24 106 Lassen 1 mi. below Drakesbad, Mt. Lassen Natio,al Park 1645 Comment
  JEPS114874  Lilaea scilloides Lowell Ahart, John Dittes 2008-6-20 14943 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
  HSC15584  Lilium pardalinum subsp. pardalinum Fred J. Kindel 1955-7-8 Lassen Susan River Comment
  CHSC13735  Lilium washingtonianum subsp. washingtonianum S. Villard 1973-7-3 58 Lassen On west side of county road going from Susanville to Plumas National Forest, 2 miles after pavement ends. Comment
  JEPS23857  Limosella acaulis Peter H. Raven and Otto T. Solbrig 1958-6-17 13287 A Lassen along United State Highway 395, 1.8 mi s Ravendale Comment
  UC1101424  Limosella acaulis Herbert L. Mason and Verne Grant 1947-7-9 13293 Lassen 5 mi e Bieber Comment
  SEINET9337712  Limosella acaulis Robert Thorne, DeBuhr, Larry 1975-8-22 47206 Lassen Hwy 395 Comment
  CHSC60855  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1993-6-28 5602 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  CHSC99734  Limosella aquatica Lowell Ahart; John Dittes 2008-6-20 14927 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS96128  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, edge of Papoose Creek where it leaves the N end of the meadow 1633 Comment
  RSA716147  Linanthus ciliatus L. Ahart, John Dittes 2005-6-2 11936 Lassen About 1 1/2 miles northeast of the Anderson Ranch Home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  UC1025087  Linanthus harknessii Leo Whitney 1934-7-5 1788 Lassen ca 15 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Crater Mountain 2225 Comment
  CHSC6204  Linanthus pungens 1944-7-9 Lassen Eagle Lake. Dow Butte. 2042 Comment
  OBI75885  Linanthus pungens subsp. pulchriflorus Anthony Baniaga 2011-7-1 415 Lassen BLM. Fort Sage MTs OHV trailhead area, E of Doyle. Quad 1442 Comment
  RSA123903  Linum lewisii G. A. Fischer, Irwin H. Johnson 1933-7-14 F 264 Lassen Lassen Forest. Slope S. 2 deg. 1768 Comment
  CHSC36469  Linum lewisii var. lewisii Jeffrey R. Peak 1982-6-3 30 Lassen Ca. .8 mi s jct forest service roads 5.I6 and 5.I7 heading toward 5-corners. Comment
  JEPS114694  Linum lewisii var. lewisii Lowell Ahart, John Dittes 2008-6-20 14917 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC1924245  Linum lewisii var. lewisii Debra Valov 2004-6-3 2004237 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 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
  CHSC60768  Lithophragma tenellum Vernon H. Oswald 1993-6-3 5478 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poisen Lake and Susanville. 1731 Comment
  SBBG125299  Lithospermum arvense L. Ahart, J. Dittes 2012-7-11 18351 Lassen N edge of a farmed field, S side of hwy, ca. 100 yards E of Cable Rd and Pittville Rd, 2.16 mi NNE of Pittville, 3955 feet E of Lassen-Shasta County Line, Fall River Valley 1205 Comment
  UC506915  Lithospermum ruderale George A. Fischer and Irwin H. Johnson 1933-7-19 F 262 Lassen Lassen; Sec. 2 1783 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
  SEINET8588548  Lomatium austiniae 2015-5-11 NV 030 -1054 Lassen Constantia Allotment. HWY 395 into CA, past Red Rock fire entrance, turn right onto dirt road entrance before reaching the bridge, drive past two cattle guards, site along ATV road. 1510 Comment
  CHSC1962  Lomatium bicolor J. Wakeman 1963-5-11 Lassen Bieber. Comment
  UC1123089  Lomatium bicolor var. leptocarpum A. Simontacchi 1940-5-14 710 Lassen 10.2 mi E of Coyote Spring 1699 Comment
  CHSC77178  Lomatium canbyi G. Schoolcraft 1993-4-27 2255 Lassen Ash Valley RNA/ACEC. 1554 Comment
  HSC21524  Lomatium caruifolium var. denticulatum B. R. Templeton 1962-4-24 Lassen 2 mi W of Millville Comment
  CHSC29900  Lomatium dissectum var. multifidum Robin Ondricek 1978-6-8 44 Lassen Ridge E of Lower Dry Lake in area between basalt and loam. 1767 Comment
  CHSC65245  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen In rocky areas along U.S. Hwy. 395, 9.5 mi. north of Madeline. 1490 Comment
  UC1123079  Lomatium macrocarpum A. Simontacchi 1940-5-17 750 Lassen 1.1 mi. s.-s.w. Dixie Spring; Halls Flat Quad. Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  OBI48160  Lomatium nevadense Rhonda Riggins 1989-4-27 1651 Lassen U.S. 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line. 1676 Comment
  SEINET5333604  Lomatium nevadense var. nevadense N. H. Holmgren, P. K. Holmgren 1978-6-11 8924 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance. 1800 Comment
  UC1609377  Lomatium nudicaule Vernon H. Oswald and Lowell Ahart 1993-6-28 5617 Lassen s.-s.e. flank Harvey Mt. (n.-n.e. of Burgess Meadow, n.e. of Poison Lake, n. of Hwy. 44 on Rd. 33N06) 1798 Comment
  CHSC7745  Lomatium plummerae Beverly J. Wise 1969-4-13 117 Lassen 2.9 mi. east of junction of Hwy 395 on Las. co. rd. 338 (Smoke Creek Road). 1554 Comment
  CAS-BOT-BC217798  Lomatium ravenii G. Schoolcraft No date on label 212 Lassen North of Shaffer Mountain 1356 Comment
  JEPS25531 Image available Lomatium ravenii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7145 Lassen 2 mi. s. Ravendale 1615 Comment
  UC1559672 Image available Lomatium ravenii Gary Schoolcraft 1988-5-4 1792 Lassen ca. 3 mi. s.e. Ravendale 1615 Comment
  SEINET10693768 Image available Lomatium ravenii Lincoln Constance, Rimo Bacigalupi 1959-6-14 Constance 3672 Lassen Open, slightly alkaline flat with Artemisia, Blepharipappus, Cryptantha and Eriogonum. One mile south of Ravendale. 1463 Comment
  CHSC25907  Lotus K. R. Stern 1967-7-1 2464 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  JEPS87400  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5608 Lassen 1.5 mi ne of Aspen Well (n of Hwy 44 on Harvey Rd One (34N27), n of Harvey Valley, ne of Poison Lake); Harvey Rd One 1761 Comment
  CHSC113075  Ludwigia palustris Lowell Ahart; John Dittes 2013-7-23 18904 Lassen Dry drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29949  Lupinus arbustus Robin Ondricek 1978-6-6 30 Lassen Approx. 1 mi from ELFS where lines corss road. 1584 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  SEINET5327728  Lupinus arbustus N. H. Holmgren, P. K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) E of Rye Patch Canyon summit, 16 km (10 mi) airline distance SE of Ravendale. On N-facing slope 1830 Comment
  NY732867  Lupinus arbustus subsp. calcaratus K. Morris 1973-5-25 211 Lassen Collected 9.6 miles north of Milford on US 395 Comment
  CAS-BOT-BC208745  Lupinus argenteus var. heteranthus John Thomas Howell 1974-7-8 50461 Lassen Susanville - Sierra Nevada 1295 Comment
  CAS-BOT-BC208766  Lupinus argenteus var. heteranthus Beeson 1927-7-11 21470 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  UC1129768  Lupinus argenteus var. heteranthus A. Simontacchi 1940-6-28 721 Lassen 5.7 mi s Eldridge; Lassen National Forest, Halls Flat Quad. Comment
  CAS-BOT-BC208837  Lupinus argenteus var. meionanthus Clare B. Hardham 1969-8-28 s.n. Lassen West of Janesville - Sierra Nevada Comment
  SEINET5328130  Lupinus brevicaulis M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-14 86- 40 -1 Lassen Near Hwy 395, at Noble Emigrant Trail Sign, 7 rd miles N of Litchfield 1524 Comment
  CAS-BOT-BC196637  Lupinus breweri var. breweri A. M. Vollmer; L. Beane 1953-7-1 57 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  POM253163  Lupinus caudatus A. A. Heller 1938-6-23 15203 Lassen Along U.S. Highway 395 just outside of Johnstonville. Comment
  SEINET10452632  Lupinus caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  SEINET10490606  Lupinus caudatus subsp. caudatus H. Dearing, M. Dearing 1938-6-30 Dearing 2228 Lassen 40 mi. W of susanville, poison lake. 1219 Comment
  SEINET10490671  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 458 Lassen 6 mi. N of hallelujah jact on us hwy 395, in aremisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SD51227  Lupinus confertus Darley F. Howe 1960-9-21 2993 Lassen 2 miles north of Janesvill on Hwy 395 1280 Comment
  SEINET6655529  Lupinus laxiflorus var. calcaratus Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale.; 0 1830 Comment
  CHSC4818  Lupinus lepidus var. confertus R. Carter 1967-7-16 618 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca. 12 mi n of Susanville, on s side of rd. Comment
  UC1035886  Lupinus lepidus var. confertus Annie M. Alexander and Louise Kellogg 1946-8-15 5159 Lassen Janesville Comment
  SFV11002  Lupinus lepidus var. confertus J. Turner, F. M. Ball 1962-7-13 1194 Lassen Roadside on Highway 395 near Milford. 1280 Comment
  CHSC60356  Lupinus lepidus var. sellulus Mary Ann Showers 1992-6-13 2535 Lassen Lassen Vocanic National Park. Trail from Snag Lake jct to Widow Lake. 1828 Comment
  CHSC65103  Lupinus lepidus var. sellulus Vernon H. Oswald; Lowell Ahart 1995-7-24 7138 Lassen High Cascade Range. Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. Locally common in dry soil at the NE corner of the impoundment on Pine Creek. 1905 Comment
  UC15910  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC506994  Lupinus leucophyllus George A. Fischer and Irwin H. Johnson 1933-7-12 204 Lassen Grass Valley. Comment
  SEINET10452640  Lupinus meionanthus Taylor 1982-8-27 Taylor 5050 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  UC574453  Lupinus onustus M. E. Jones 1897-6-26 Lassen Perkin's Ranch Susanville (Susanville) 1463 Comment
  SEINET10490190  Lupinus polyphyllus subsp. superbus Duane Isely, I. Isely 1971-7-12 Isely 11382 Lassen Bogard campground, lassen national forest. Ca 2 mi s of state hwy. 44. 30 Mi Nw of susanville. Abundant, corolla violet, standard reflexed 45 degrees; Basal leaves moderately long-petioled. Comment
  SEINET8059970  Lupinus polyphyllus var. burkei W. W. Eggleston 1910-1 6305 Lassen Vicinity of Doyle Station 1240 Comment
  UC1713549  Lupinus polyphyllus var. burkei M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  NY747611  Lupinus polyphyllus var. saxosus H. D. D. Ripley 1944-5-30 5982 Lassen 2 miles south of Madeline 1707 Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake Valley. 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
  POM253193  Madia bolanderi A. A. Heller 1937-9-1 15342 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  CAS-BOT-BC342656  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  CAS-BOT-BC344300  Madia exigua G. Schoolcraft 1989-6-7 1903 Lassen Lower NE slopes of Shaffer Mtn. Comment
  UC2047849  Madia exigua Debra Valov 2016-6-20 1297 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; on NW-facing, dry, rocky outcrop. Comment
  UC33229  Madia exigua M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  UC469045  Madia exigua Franklin P. Nutting Lassen Dixie Valley Comment
  UC76023  Madia exigua Milo S. Baker Jul 1905 Lassen Dixie Valley Comment
  CHSC29911  Madia glomerata Robin L. Ondricek 1978-8-26 126 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  SEINET515862  Madia glomerata Vernon H. Oswald 1998-9-8 9576 Lassen Hwy. 299 at the railroad overpass on the east side of Nubieber. 1256 Comment
  CHSC66376  Madia gracilis Vernon H. Oswald; Lowell Ahart 1996-6-17 7783 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  RSA715984  Madia minima L. Ahart, John Dittes 2005-6-2 11940 Lassen About 1 1/2 miles northeast of the Anderson Ranch Home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  UC92217  Malacothrix floccifera unknown 1892-6-26 Lassen Milford Comment
  JEPS102664  Malacothrix glabrata V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10038 Lassen N-NE of Doyle (dirt road bordering the E side of Turtle Mountain) 1828 Comment
  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
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CAS-BOT-BC71143  Marsilea R. F. Thorne; C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir Comment
  UC62420  Marsilea oligospora Baker and Nutting 1894-7-25 Lassen near Eagle Lake Comment
  CAS-BOT-BC67834  Marsilea vestita R. K. Gierisch; D. H. Esplin 1969-8-25 3597 Lassen Harvey Valley 1676 Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  JEPS88059  Marsilea vestita subsp. vestita Vernon H. Oswald and Lowell Ahart 1996-9-10 8274 Lassen sw Westwood (Mountain Meadows Reservoir, edge of reservoir between RR and Indian Ole Dam) 1539 Comment
  CHSC112768  Matricaria discoidea Lowell Ahart; John Dittes 2013-7-22 18862 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
  UC585137  Matricaria occidentalis E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1781 Lassen 3 mi e Susanville 1219 Comment
  JEPS88240  Medicago lupulina Vernon H. Oswald and Lowell Ahart 1996-6-17 7812 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, on edge of trail at the 6.0 mi. post e. of Devils Corral Trailhead); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  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-BC282042  Melica fugax John Thomas Howell 1934-6-14 12167 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  UCD87291  Melica fugax Jack Major 1966-6-24 s.n. Lassen Lassen County (northeastern): Long Valley, 3 miles airline southwest of Patterson Guard Station, Modoc National Forest. Comment
  UCR67372  Mentha canadensis George K. Helmkamp 1990-9-23 E- 16 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 Comment
  UC1609443  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-14 5536 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  SD130461  Mentzelia albicaulis John Thomas Howell 8-9 Jul 1974 50466 Lassen Susanville Comment
  CHSC117538  Mentzelia congesta Lowell Ahart; John Dittes 2016-7-12 21150 A Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south ofd 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
  JEPS87411  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  JEPS94543  Mentzelia dispersa Vernon Oswald and Lowell Ahart 1997-6-24 8603 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  UC1609316  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1993-6-14 5511 Lassen ca 4 m (air) w Eagle Lake (1.0 m n of its jct. with Lassen A21, on the w edge of Brockman Flat Lava Beds.); Lassen A1 (Eagle Lake Rd.); SE 1/4 SW 1/4 1810 Comment
  CDA36642  Mentzelia dispersa T. C. Fuller 1963-7-15 10900 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  HSC15839  Mentzelia laevicaulis Jim Vaughn 1956-8-17 Lassen Hwy. 36, 1 mi. W of Susanville. Comment
  SJSU8590  Mentzelia laevicaulis M. D. Fleschner 1965-7-12 112 Lassen by Hwy 395 near S shore Honey L c. 2 mi SE of Milford Comment
  UC1121656  Mentzelia montana Robert W. Gardner 1937-6-18 G 22 Lassen Halls Flat Quadrangle, Burgess Spring Experimental Range Comment
  CHSC27165  Menyanthes trifoliata J. D. Prouty 1978-7-28 35 Lassen Murrers Upper Meadow, e of Eagle Lake. Boggy, central portion of wet meadow. 1545 Comment
  JEPS88323  Menyanthes trifoliata Vernon H. Oswald and Lowell Ahart 1996-6-24 7890 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, Papoose Meadows); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC61179  Micranthes nidifica Vernon H. Oswald; Lowell Ahart 1993-5-12 5388 Lassen Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. Meadow on the S side of the road. 1719 Comment
  CHSC66261  Micranthes oregana Vernon H. Oswald; Lowell Ahart 1996-6-24 7889 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  CHSC60877  Microseris laciniata subsp. laciniata Vernon H. Oswald; Lowell Ahart 1993-7-8 5670 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
  CHSC99295  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-20 14951 Lassen 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
  JEPS118157  Microseris laciniata subsp. laciniata Dean W. Taylor 2009-5-21 20606 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  CAS-BOT-BC349300  Microseris nutans A. M. Vollmer; L. Beane 1953-7-1 53 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC349301  Microseris nutans James Jokerst 1983-7-25 1887 Lassen Near Madeline Plains 1614 Comment
  OBI76978  Microseris nutans Anthony Baniaga 2011-8-4 486 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill along 30N21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  SEINET10475172  Microseris nutans Mary Merello 1993-6-28 Merello 755 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  UC1070115  Microseris nutans A. Simontacchi 1940-5-28 782 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1752 Comment
  CHSC112452  Microsteris gracilis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18741 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
  UC1609131  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-28 5609 Lassen ne Poison Lake (n of Hwy. 44 on Rd. 33N06, nne of Burgess Meadow, sse flank of mtn.); Harvey Mtn. 1798 Comment
  UC1609383  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-14 5523 Lassen ca. 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore of lake, upper beach between the road and the lake); Eagle Lake 1566 Comment
  UC1037226  Mimulus breweri Leo Whitney 1933-8-14 1596 a Lassen ca. 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  JEPS4710  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi s Westwood 1524 Comment
  POM252822  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi. south of Westwood. 1524 Comment
  JEPS28988  Mimulus guttatus Frances D. Payne 1929-7-12 97 Lassen near s extremity Warner Range; Upper Silver Creek 2499 Comment
  HSC20753  Mimulus guttatus M. T. Milligan 1964-7-16 130 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  JEPS23844  Mimulus inflatulus Peter H. Raven with Otto T. Solbrig 1958-6-17 13298 Lassen 4.8 mi s Madeline (along United States Highway 395) Comment
  JEPS97419  Mimulus latidens Vernon H. Oswald and L. Ahart 1995-6-19 6887 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395 1350 Comment
  JEPS11447  Mimulus microphyllus Brown and Wieslander 1922-7-30 39 Lassen Martin Springs Eagle Lake 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
  HSC22960  Mimulus nanus var. mephiticus John Pratt 1970-7-11 76 Lassen At base of Dyer Mtn lookout tower. Comment
  HSC63954  Mimulus nanus var. mephiticus Teresa Prendusi 1980-7-1 Lassen Champ's Flat 1707 Comment
  RSA422243  Mimulus nanus var. mephiticus Christopher Davidson 1975-6-7 2765 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCD55277  Mimulus nanus var. mephiticus Ellen Dean 2006-5-15 3092 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
  RSA422232  Mimulus nanus var. nanus Christopher Davidson 1975-6-7 2764 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1553406  Mimulus nanus var. nanus Gary Schoolcraft 1988-6-20 1813 Lassen 16 mi w Madeline; Ash Valley 1584 Comment
  RSA434702  Mimulus primuloides Christopher Davidson 1974-7-25 2495 Lassen Lassen Volcanic Nat. Park. On rd to Juniper Lake. 1982 Comment
  HSC95323  Mimulus primuloides var. primuloides Gordon Leppig, Tony LaBanca 1997-6-28 516 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1778582  Mimulus pulsiferae S. E. Schoenig 1998-7-5 98 -69 Lassen SW shore of Moll Reservoir, 2 meters from waters edge. 1499 Comment
  RSA536395  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-20 629 Lassen Gray's Valley, 4.5 miles N of USFS Bogard Work Center. 1715 Comment
  JEPS19730  Mimulus suksdorfii Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5990 Lassen 7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Rail Road, just e of U.S. Highway 395); on Southern Pacific Rail Road 1676 Comment
  RSA149052  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  JEPS94562  Mitella pentandra Vernon Oswald and Lowell Ahart 1997-6-24 8615 Lassen slope along Forest Rd. 29N43 5.4 mi e Gold Run Rd. (n side of mtn., s of Susanville); Diamond Mtn. 1889 Comment
  CHSC5270  Monardella odoratissima subsp. glauca W. Vinyard 1946-6-11 Lassen Pine Creek. 1580 Comment
  CHSC52767  Monardella odoratissima subsp. glauca L. P. Janeway 1990-7-4 3771 A Lassen Ca 0.9 mi NE of Meadowview Peak. 1981 Comment
  JEPS95713  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  SD87705  Monardella odoratissima subsp. glauca Frank W. Peirson 1926-6-24 6850 Lassen 2-3 miles southward from the Madeline Plain. Comment
  CHSC118842  Monardella odoratissima subsp. pallida L. P. Janeway; B. Castro 2017-7-2 12340 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  UC506977  Monardella odoratissima subsp. pallida George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen Forest 1722 Comment
  CHSC63392  Monolepis nuttalliana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6315 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  JEPS107400  Monolepis nuttalliana Lowell Ahart, John Dittes 2005-6-1 11897 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  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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  SDSU5609  Monolepis nuttalliana D. F. Howe 1964-7-31 3903 Lassen Modoc National Forest 10.2 miles from entrance on road from Likely. 1768 Comment
  CHSC57311  Montia chamissoi Mary Meyer 1980-7-9 Lassen In Horse Camp Spring. 1706 Comment
  CHSC59564  Montia chamissoi Mary Meyer 1980-5-15 531 Lassen In streams along rocks and in moist riparian sites. 1371 Comment
  NY497723  Montia chamissoi N. H. Holmgren 1978-6-11 8917 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  OBI76977  Montia chamissoi Anthony Baniaga 2011-6-20 385 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  RSA74361  Montia chamissoi Milo S. Baker 1952-5-23 12421 a Lassen Wet Spot, E of Chester, Hwy 36 Comment
  UC1136742  Montia chamissoi Robert W. Gardner 1937-6-14 G 3 Lassen Burgess Spring Experimental Range 1767 Comment
  UC1609468  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02) 7 air mi w Eagle Lake (5.3 mi e of Lassen 105 (32N28Y), near Summit Camp) 1889 Comment
  CHSC54191  Montia dichotoma Vernon H. Oswald 1991-5-28 4618 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. Locally abundant on the bed of a drying vernal pool on an undulating sagebrush flat east of the barn. 1264 Comment
  HSC30029  Montia dichotoma D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19275 Lassen Harvey Valley near Cone Springs Comment
  CHSC77226  Montia fontana G. Schoolcraft 1995-5-16 2478 Lassen 2 mi. east of Bull Flat. Growing in spring. 1615 Comment
  CHSC66257  Montia linearis Vernon H. Oswald; Lowell Ahart 1996-6-24 7875 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Growing in moist soil on the edge of Papoose Creek where it leaves the N end of the meadow. 1633 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
  UC1024657  Muhlenbergia andina Leo Whitney 1934-7-24 2195 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  HSC10386  Muhlenbergia asperifolia M. T. Milligan 1964-8-6 201 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS107815  Muhlenbergia asperifolia Lowell Ahart, John Dittes 2005-6-2 11972 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  UC589857  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6072 Lassen Baxter Creek Susanville Quadrangle 1280 Comment
  UC589858  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen near Red Rock; Sierraville Quadrangle 1341 Comment
  JEPS28280  Muhlenbergia filiformis J. T. Howell 1957-7-28 940 Lassen marsh near west end of Widow Lake; Lassen Volcanic National Park 2072 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
  RSA268992  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1972-7-24 5809 Lassen 22 miles NW of Susanville in vicinity of Silver Lake, along Hwy 44, Lassen Nat'l Forest 1707 Comment
  CHSC64813  Muilla transmontana Vernon H. Oswald 1995-5-31 6810 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.7 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CAS-BOT-BC515650  Muilla transmontana H. D. Ripley; R. C. Barneby 1944-5-29 5953 Lassen South of Jamesville 1280 Comment
  CAS-BOT-BC515651  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen NW corner of Secret Valley near Karlo Comment
  CHSC91312  Myosotis discolor Lowell Ahart; John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UCD55284  Myosurus apetalus Ellen Dean; Gary Schoolcraft 2006-5-16 3103 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  NY492641  Myosurus apetalus M. J. Williams 1986-5-14 8638- 3 Lassen Tuledad Canyon Road, from Duck Flat to Ravendale. 0.1 mile west of California-Nevada line. Comment
  CAS-BOT-BC83319  Myosurus minimus Peter H. Raven; Otto Thomas Solbrig 1958-6-17 13285 Lassen Along United States Highway 395, 1.9 miles south of Ravendale. Comment
  UC1584005  Myosurus minimus G. Schoolcraft 1990-5-16 2055 Lassen just e Third Butte 1267 Comment
  UC9325  Myosurus minimus M. S. Baker and Frank Nutting 1894-7-1 Lassen w side Dixey Mts Comment
  SEINET5338223  Myosurus minimus subsp. montanus N. H. Holmgren, P. K. Holmgren 1978-6-11 8913 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
  CHSC77218  Myriophyllum sibiricum G. Schoolcraft 1996-7-10 2532 Lassen Willow Creek- northeast of Susanville. 1432 Comment
  UC1101502  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-9-6 8378 Lassen N arm of Eagle Lake. Comment
  RSA17432  Nama aretioides Elmer I. Applegate 1934-5-4 8929 Lassen Secret Valley, 20 miles south of Ravendale. Comment
  CHSC71088  Nama aretioides var. californica Vernon H. Oswald; Lowell Ahart 1998-5-22 9105 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
  JEPS29749  Nama aretioides var. multiflora Rimo Bacigalupi and L. R. Heckard 1962-5-28 8503 Lassen in area n of Honey Lake (2 mi e of Wendel Junction on road from U.S. 395 past Flanagan to Pyramid Lake, Nevada) 1219 Comment
  UC585170  Nama aretioides var. multiflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1773 Lassen Red Rock 1280 Comment
  CHSC60903  Nama densa var. densa Vernon H. Oswald; Lowell Ahart 1993-7-8 5658 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  CHSC91296  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
  CHSC91324  Nama densa var. densa Lowell Ahart; John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction. 1461 Comment
  SBBG58267  Navarretia breweri E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 Comment
  UC133863  Navarretia breweri Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC1609320  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-28 5592 Lassen 1.7 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley) 1719 Comment
  HSC63771  Navarretia breweri Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  UCD37481  Navarretia breweri Beecher Crampton 1960-6-20 5737 Lassen Lassen County, Lassen National Forest, 6.5 miles north of Bogard Ranger Station, Little harvey Valley. 1676 Comment
  UC449789  Navarretia capillaris Franklin P. Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC44331  Navarretia divaricata Lowell Ahart; John Thomas Howell 1974-7-9 541 Lassen Along Eagle Lake Road, on the south-west side of Eagle Lake. 1584 Comment
  UC1124159  Navarretia divaricata A. Simontacchi 1940-5-28 777 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  JEPS114395  Navarretia intertexta Lowell Ahart, John Dittes 2008-6-22 15028 Lassen about 120 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  UCD32670  Navarretia intertexta Beecher Crampton 1954-7-6 2072 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  JEPS121309  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2013-7-22 18869 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS114394  Navarretia intertexta subsp. propinqua Lowell Ahart, John Dittes 2008-6-22 15031 Lassen about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  JEPS19816  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 Lassen 7 mi n Madeline (just e of U.S. Highway 395 (about 1 mi n of Sage Hen siding on S.P. Railroad)) 1676 Comment
  UC1184059  Navarretia intertexta subsp. propinqua Jean Langenheim 1957-6-22 4366 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  CHSC27670  Navarretia leptalea subsp. bicolor Robert A. Schlising 1978-7-9 3312 Lassen South of Eagle Lake. Area between Papoose Meadows and Eagle Lake Road. Comment
  CHSC110909  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2012-7-9 18288 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
  CHSC66253  Navarretia leucocephala subsp. minima Vernon H. Oswald; Lowell Ahart 1996-6-24 7847 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 just S of the cabins. 1633 Comment
  CHSC99736  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2008-6-20 14952 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 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS19814  Navarretia leucocephala subsp. minima Rimo Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  POM75594  Navarretia leucocephala subsp. minima Marcus E. Jones 1897-6-18 10107 Lassen Chat. 1524 Comment
  UC1137773  Navarretia linearifolia subsp. linearifolia August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest, Black's Mtn 1706 Comment
  SEINET10496833  Navarretia propinqua Mary Susan Taylor 1974-1 Taylor 277 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS107402  Nemophila parviflora var. austiniae Lowell Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS2980  Nemophila parviflora var. austiniae L. Constance 1938-6-10 2324 Lassen 0.5 mi w Fredonyer Pass (junction of Crazy Harry and Westwood--Susanville Roads); w of Fredonyer Pass 1676 Comment
  UC606944  Nemophila parviflora var. austiniae L. Constance 1938-6-10 2324 Lassen 0.5 mi w Fredonyer Pass (junction of Crazy Harry and Westwood--Susanville Roads); w of Fredonyer Pass 1676 Comment
  JEPS1932  Nemophila pedunculata L. Constance 1938-6-10 2323 Lassen 2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); McKenzie Meadows, sw of Fredonyer Pass 1524 Comment
  UC606930  Nemophila pedunculata L. Constance 1938-6-10 2323 Lassen 2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); sw of Fredonyer Pass, McKenzie Meadows 1524 Comment
  JEPS19729  Neoholmgrenia andina Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5992 Lassen about 1 mi n Sage Hen siding on S.P. Railway (along U.S. Hwy 395, and 7.0 mi n of Madeline) 1676 Comment
  CAS-BOT-BC349855  Nestotus stenophyllus Alice Eastwood; John Thomas Howell 1940-6-15 8314 Lassen Upper Willow Creek east of Hayden Hill Comment
  UC1137647  Nestotus stenophyllus A. Simontacchi 1940-5-17 749 Lassen 1.1 mile SSW of Dixie Spring 1699 Comment
  CHSC4841  Nicotiana attenuata R. Carter 1967-7-13 596 Lassen Collected behind water tank. Ca. 500 yds NE of Eagle Lake Biology Station on the e shore. 1524 Comment
  CHSC5920  Nicotiana attenuata J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Horse Lake. 1554 Comment
  CHSC65361  Nicotiana attenuata Vernon H. Oswald; Lowell Ahart 1995-8-14 7182 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  JEPS12268  Nicotiana attenuata W. L. Jepson 1939-8-12 19410 Lassen sw of Dixie Valley Comment
  JEPS124603 Image available Nicotiana attenuata G. R. Ostrander 1965-7-12 256 Lassen Growing along U. S. 395 15 miles N. of the junction of Calif. 70 & U. S. 395. Comment
  CHSC54175  Nothocalais troximoides Vernon H. Oswald 1991-5-28 4627 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. East of the barn. 1264 Comment
  JEPS94115  Nothocalais troximoides Vernon H. Oswald and Lowell Ahart 1998-5-22 9097 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
  CDA20352  Oenothera alyssoides var. villosa D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  HSC22878  Oenothera deltoides John Pratt 1970-6-14 16 Lassen East of Janesville Comment
  UCD33605  Oenothera deltoides Beecher Crampton 1970-6-26 8638 Lassen Lassen County, 10 miles north of Milford. Comment
  OBI48977  Oenothera deltoides Lewis S. Rose 1940-6-16 40598 Lassen Buntinville 1280 Comment
  CHSC106678  Oenothera deltoides subsp. piperi Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  UCR71445  Oenothera elata subsp. hirsutissima Barbara Ertter 1987-7-24 7304 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  CAS-BOT-BC349945  Onopordum acanthium O. Havens 1963-8-9 s.n. Lassen P. S. Hall ranch, Doyle Comment
  CAS-BOT-BC350045  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1899 Lassen Battle Creek Meadow, Lassen Butte Region Comment
  HSC103620  Oreostemma alpigenum var. andersonii Thomas W. Nelson, Jane Nelson 1985-8-10 8015 Lassen Along north side of Silver Lake 1829 Comment
  JEPS88564  Oreostemma alpigenum var. andersonii Vernon H. Oswald and Lowell Ahart 1996-8-1 8120 A Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi n Dyer Mtn. Lookout (on downhill side of road, ssw of Westwood) 1737 Comment
  UC1037281  Oreostemma alpigenum var. andersonii Leo Whitney 1934-9-16 1718 Lassen Bumpass Hell Lassen National Park 2529 Comment
  CHSC105235  Orobanche californica subsp. jepsonii Lowell Ahart; John Dittes 2010-7-31 16985 A Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  JEPS70105  Orobanche corymbosa subsp. corymbosa L. Maynard Moe 1969-8-4 103 Lassen About 1 mile north of Litchfield on U. S. Highway 395. Comment
  CAS-BOT-BC500270  Orobanche uniflora subsp. occidentalis Doris Kildale Gillespie 1930-5-13 9368 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC500271  Orobanche uniflora subsp. occidentalis H. C. Cantelow 1941-5-22 s.n. Lassen 13.5 mi W of Susanville, at Fredonyer Pass Comment
  SD52193  Orthocarpus copelandii var. cryptanthus F. Stephens 1894-7-15 8115 Lassen Bunch Grass Spring Comment
  UC1523713  Orthocarpus cuspidatus subsp. cryptanthus Gary Schoolcraft 1981-7-6 616 Lassen near top Goodrich Mtn.; near top of Goodrich Mtn. 1828 Comment
  RSA39737  Orthocarpus lacerus Philip A. Munz 1947-5-20 11890 Lassen Milford. 1265 Comment
  CHSC13864  Oxypolis occidentalis Mary Meyer 1973-7-7 20 Lassen Located at NE end of Murrer's Upper Meadow. 1572 Comment
  UC125352  Oxytheca dendroidea subsp. dendroidea T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  NY404460  Oxytheca dendroidea subsp. dendroidea G. Schoolcraft 1985-7-29 1493 Lassen West slopes of Fort Sage Mountains; 26-17-27 1585.0 Comment
  CAS-BOT-BC316809  Packera cana Alice Eastwood; John Thomas Howell 1940-6-15 8313 Lassen Upper Willow Creek East of Hayden Hill Comment
  CHSC35585  Packera cana G. Schoolcraft 1979-7-11 143 Lassen South face of Observation Peak. 2316 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
  HSC68931  Packera eurycephala Gary Schoolcraft 1980-6-5 251 Lassen N base of Snowstorm Mtn. 1585 Comment
  UC1924213  Packera eurycephala var. eurycephala Debra Valov 2004-6-9 2004270 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  UC1776684  Packera multilobata G. Schoolcraft 1999-7-12 2856 Lassen N of Tuledad Canyon near NV stateline 1737 Comment
  CAS-BOT-BC10388  Paeonia brownii Margaret Williams; Steven Williams 1974-7-26 74- 2 -14 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  UC485769  Paeonia brownii H. E. and S. T. Parks June, 1928 223 Lassen Drakesbad Lassen National Park Comment
  POM99648  Paeonia brownii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC149529  Panicum capillare J. Burtt Davy Jun 17 1897-Jun 24 1897 3346 Lassen Honey Lake Valley Comment
  CHSC77265  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE. of Shaffer Mtn. 1356 Comment
  RSA647577  Pascopyrum smithii Marion P. Harthill 1972-6-16 780 Lassen Doyle 1372 Comment
  CHSC65122  Pectiantia pentandra Vernon H. Oswald; Lowell Ahart 1995-7-24 7142 Lassen Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. 1905 Comment
  UC1567381  Pedicularis centranthera G. Schoolcraft 1989-5-3 1862 Lassen nw corner of Secret Valley 1356 Comment
  OBI75871  Pedicularis groenlandica Anthony Baniaga 2011-8-9 494 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  CHSC60416  Penstemon cinicola Mary Ann Showers 1992-6-12 2516 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Buttle Lake. 1859 Comment
  PASA868  Penstemon confertus var. procerus Margaret Stason 1932-6-23 438 Lassen Kelleys Camp, Warners Creek Comment
  CDA41877  Penstemon deustus T. C. Fuller 1963-7-15 10901 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC61241  Penstemon deustus var. pedicellatus P. V. Caldwell 1972-6-15 222 Lassen 10 ft n of Lecture Lab. entrance. Eagle Lake Field Station. 1554 Comment
  UC1035884  Penstemon gracilentus Annie M. Alexander and Louise Kellogg 1946-8-13 5157 Lassen w side of Eagle Lake Comment
  UC1483843  Penstemon gracilentus G. Schoolcraft 1979-7-3 110 Lassen 4.3 mi up the road from Observation Peak (near Curlleaf Mtn.); up rd from Obseration Peak, near Curlleaf Mtn. 2133 Comment
  NY627271  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood 1493.5 Comment
  POM195120  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood. 1494 Comment
  SEINET5329198 Image available Penstemon neotericus C. G. Gulling 1905-1 1543 Lassen Big Meadows Comment
  NY627254  Penstemon neotericus K. A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mountain; along CA 36, ca. 1 mile east of jct. CA A21 on east side of Westwood. 1524.0 Comment
  POM147859  Penstemon neotericus J. B. Feudge 1927-7-20 1768 Lassen Westwood. Comment
  CAS-BOT-BC239222  Penstemon newberryi var. berryi C. R. Quick 1964-7-11 64 -77 Lassen Humboldt Summit ne. of Janesville & Butte Mdws. 2011 Comment
  NY627392  Penstemon newberryi var. newberryi R. M. Austin 08 1878 s.n. Lassen Mount Dyer Comment
  CHSC37349  Penstemon roezlii Jennifer Estep 1978-6-27 19 Lassen Dry L., E of Eagle L. 1645 Comment
  NY650102  Penstemon roezlii J. T. Howell 1973-8-1 50205 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164.1 Comment
  POM195122  Penstemon roezlii D. D. Keck 1930-7-23 954 Lassen 12 miles west of Susanville. 1677 Comment
  POM44786  Penstemon roezlii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CDA41987  Penstemon roezlii T. C. Fuller 1963-6-1 10633 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  JEPS103216  Penstemon roezlii G. Schoolcraft 1989-7-3 1947 Lassen Diamond Mtns. on Diamond Peak 2346 Comment
  SEINET230413  Penstemon roezlii N. H. Holmgren, PK Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek Drainage 13.6 mi from US Hwy 395 via Rye Patch Canyon 1580 Comment
  CAS-BOT-BC239493  Penstemon rydbergii var. oreocharis A. M. Vollmer; L. Beane 1953-7-1 78 Lassen Along Halls Flat road beginning 6 miles west of Susanville to McArthur 1554 Comment
  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-BC239497  Penstemon rydbergii var. oreocharis Louella Bass 1973-5-29 EV 50 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC239502  Penstemon rydbergii var. oreocharis Al Simontacchi 1940-6-3 792 Lassen Lassen National Forest, 8.3 miles SE of Alcohol Jacks Cabin 1706 Comment
  CAS-BOT-BC239506  Penstemon rydbergii var. oreocharis L. B. Barlow 1967-7-4 89 Lassen 5 mi. south of Eagle Lake Biological Sation on Gallatin Beach Road 1737 Comment
  CHSC12483  Penstemon rydbergii var. oreocharis Carol Weld 1969-6-20 15 Lassen Dean's Meadow. 1950 Comment
  CHSC12939  Penstemon rydbergii var. oreocharis K. R. Stern 1974-6-26 5869 Lassen E end of Champs flat. Comment
  CHSC4754  Penstemon rydbergii var. oreocharis R. Carter 1967-7-14 612 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir. Comment
  JEPS12898  Penstemon rydbergii var. oreocharis G. S. Crew and C. S. Robinson 1927-7-1 49 Lassen Bogard R.S. pasture Lassen Forest <sw?>, Bogard R.S. pasture 1712 Comment
  JEPS79151  Penstemon rydbergii var. oreocharis L. R. Heckard with R. C. Bacigalupi 1980-6-12 5256 Lassen large meadow just ne Westwood (near golf course); ne of Westwood 1554 Comment
  NY651293  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 3 miles east of Westwood Comment
  NY651296  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219.2 Comment
  CHSC13894  Penstemon speciosus L. E. Ray 1967-6-24 33 Lassen Collected ca. 3 mi. se ELBS, above Upper Murrer Meadow. 1524 Comment
  CHSC4821  Penstemon speciosus R. Carter 1967-7-21 625 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Diamond Mountains. Comment
  JEPS89101  Penstemon speciosus Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC54978  Penstemon speciosus Jos. Burtt Davy Lassen Amedee Comment
  NY660833  Penstemon speciosus F. W. Pennell 1940-6-10 25786 Lassen Route 36, 3 miles northwest of Westwood 1645.9 Comment
  CAS-BOT-BC243405  Penstemon sudans H. D. Ripley; R. C. Barneby 1943-6-14 5739 Lassen W. of Susanville 1371 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
  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
  NY661806  Penstemon sudans J. T. Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432.6 Comment
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Apr 21 2013
  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
  CHSC49042  Penstemon venustus Vernon Oswald 1986-7-22 2219 Lassen Hwy. 36, ca. 1 mi ne of Fredonyer Pass. 1706 Comment
  NY763153  Penstemon venustus K. A. Vincent 1987-8-5 4500 Lassen Sierra Nevada, southeast side of Fredonyer Butte; along north side of CA 36 ca. 11.5 miles WSW of Susanville, east of Fredonyer Pass. 1585.0 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
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  UC1137777  Perideridia bolanderi subsp. bolanderi George A. Fischer and Irwin H. Johnson 1933-7-12 F 210 Lassen Grass Valley Lassen National Forest 1722 Comment
  SEINET7929369  Perideridia bolanderi subsp. bolanderi David French 1968-6-3 2882 Lassen N of Honey Lake, W side of hwy 395, 7.4 mi NE of Litchfield.; 0 Comment
  CHSC105250  Perideridia kelloggii Lowell Ahart; John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 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
  CHSC29870  Perideridia oregana Robin L. Ondricek 1978-7-15 103 Lassen .6 mi e of jct. with main road to ELFS on road to Murrers Upper Meadow. 1554 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
  UCD20364  Peritoma platycarpa Joe DiTomaso 2002-6-4 s.n. Lassen About 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. Comment
  CAS-BOT-BC413480  Persicaria amphibia L. S. Smith 1918-7-22 1006 Lassen Modoc National Forest. Blue Lake 1874 Comment
  CHSC30568  Persicaria amphibia Sori H Shad 1970-6-19 29 Lassen Found in aquatic habitate near Pine Creek fish Hatchery. 1524 Comment
  CHSC61234  Persicaria amphibia P. V. Caldwell 1972-7-16 297 Lassen At foot of Black Mtn. on e shore of Eagle Lake. 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
  CAS-BOT-BC419143  Persicaria maculosa G. Schoolcraft 1995-8-16 2515 Lassen North of Cherry Mountain 1584 Comment
  CAS-BOT-BC419144  Persicaria maculosa Luella Bass 1980-8-29 s.n. Lassen Standish Comment
  JEPS17754  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5429 Lassen along Smoke Creek Ranch rd 8 mi e U.S. Hwy. 395 (se part of valley); Secret Valley 1402 Comment
  UC1567436  Phacelia adenophora G. Schoolcraft 1989-5-16 1876 Lassen w Hwy 295; Secret Valley 1347 Comment
  UC1603542  Phacelia adenophora Arnold Tiem, Margaret Williams, and Jan Nachlinger 1988-6-2 11701 Lassen on hwy 395 3.4 road mi n Wendel road (from Susanville to Alturas, s side of mt., w of hwy); Shaffer Mt. 1386 Comment
  POM72872  Phacelia adenophora C. C. Bruce 1898-06 2198 Lassen Madeline Plains. Comment
  NY1052542  Phacelia bicolor W. W. Eggleston 1911-5-29 6742 Lassen Vicinity of Doyle Station 1290 Comment
  RSA0009544  Phacelia bicolor Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  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
  JEPS87427  Phacelia glandulifera Vernon H. Oswald and Lowell Ahart 1993-6-14 5541 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), n side of rd); Eagle Lake 1566 Comment
  SEINET10935993  Phacelia hastata Mary Susan Taylor 1974-1 Taylor 274 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC29888  Phacelia hastata subsp. hastata Robin L. Ondricek 1978-8-9 121 Lassen 0.1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  HSC82267  Phacelia heterophylla Thomas W. Nelson, Jane P. Nelson 1980-7-6 5999 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CHSC93673  Phacelia heterophylla subsp. virgata Lowell Ahart; John Dittes 2005-6-2 11983 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  UC773946  Phacelia heterophylla subsp. virgata L. R. Short 1936-6-30 S- 463 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1816 Comment
  POM73331  Phacelia heterophylla subsp. virgata Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC28594  Phacelia humilis M. S. Taylor 1974-7-9 266 Lassen Scattered ca 3 ft e side of Whitehead Rd, ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. Comment
  JEPS118501  Phacelia humilis A. Holmen 2011-8-12 CA 320 -92 Lassen US Hwy 395 South to Termo. Turn East onto Lassen Co. Rd 508 (Juniper Ridge Rd). Continue approximately 11 miles to Cold Springs Rd and head north for 3 miles. Turn and travel about 1 mile. Collection site is along road. Comment
  RSA128301  Phacelia humilis var. humilis Peter H. Raven, Otto T. Solbrig 1958-6-16 13246 Lassen Four and a half miles east of Westwood on State Highway 36. Comment
  CHSC5264  Phacelia inundata J. B. Kimsey 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  UC735052  Phacelia inundata Lincoln Constance 1946-7-3 3097 Lassen Spauldings Eagle Lake (w edge of lake) 1706 Comment
  GMDRC7731  Phacelia linearis J. M. Andre, G. Clifton 1993-6-1 33407 Lassen Modoc Plateau: along US Hwy 395, approx. 30 mi. NE of Susanville, north end of Secret Valley, SE end of Snowstorm Mtn, about 15 mi. SSE of Ravendale 1375 Comment
  JEPS1192  Phacelia linearis Mrs. C. C. Bruce June 1898 2190 Lassen Madaline Plains Comment
  RSA303850  Phacelia linearis Jim R. Shevock 1972-5-20 1819 Lassen Highway 395, Honey Lake. 1311 Comment
  CHSC111256  Phacelia mutabilis L. P. Janeway; B. Castro 2012-7-3 10939 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  SD58172  Phacelia mutabilis Frances Payne 1929-7-12 85 Lassen NE Warner Mts., Ridge above Lost Lake 2438 Comment
  UC107462  Phacelia racemosa Mrs. R. M. Austin 1879-1 Lassen Eagle Lake Comment
  CHSC59552  Phacelia ramosissima var. ramosissima M> Meyer 1980-7-8 514 Lassen Amongst rocks (lg.) and junipers on top of Grasshopper Ridge. 1724 Comment
  CHSC35954  Phlox diffusa M. S. Taylor 1982-5-7 4430 Lassen Reno Junction and along old road parralleling Hwy 70, just e of Beckwourth Pass. 1676 Comment
  JEPS94530  Phlox diffusa Vernon Oswald and Lowell Ahart 1997-6-24 8638 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
  POM74334  Phlox diffusa subsp. subcarinata Marcus E. Jones 1897-6-18 10489 Lassen Chat. 1524 Comment
  JEPS118284  Phlox douglasii 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
  UC1567441  Phlox longifolia G. Schoolcraft 1989-5-16 1878 Lassen w of Rice Canyon Rd. (at base of Antelope Mtn.); Antelope Mtn. 1280 Comment
  RSA647573  Phlox longifolia Marion P. Harthill 1971-6-21 226 Lassen Ravendale Comment
  NY963725  Phlox speciosa var. nitida H. D. D. Ripley 1944-5-29 5955 Lassen South of Janesville 1280 Comment
  CHSC26429  Phlox stansburyi Gary McGrath 1977-4-24 2 Lassen Ca. 20 m w of Hwy 139, 3 km n of Susanville. 1310 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
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  UCD118467  Phlox stansburyi Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  CHSC60669  Phoenicaulis cheiranthoides Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5272 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  UC1126723  Phoenicaulis cheiranthoides A. Simontacchi 1940-5-17 753 Lassen 1.1 mi ssw of Dixie Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  UC1132473  Phragmites australis H. S. Yates 1936-8-11 6063 Lassen near Red Rock; Sierraville Quad. Comment
  UC769862  Phragmites australis R. F. Hoover 1940-10-11 4682 Lassen s Doyle; Long Valley Comment
  CAS-BOT-BC58236  Phyllodoce breweri Ella Dales Cantelow 1941-9-13 3599 Lassen Mt. Lassen Nat. Park. Comment
  PASA1593  Phyllodoce breweri Margaret Stason 1932-6-23 Lassen near mineral Comment
  CAS-BOT-BC60738  Physaria occidentalis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50655 Lassen Sierra Nevada. Summit ridge of Diamond Mountain. 2346 Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  SEINET11604123  Pinus jeffreyi D. Charlet, Darryl LeMaire 1994-7-8 1941 Lassen Sierra Nevada, Near summit of Doyle grade 1707 Comment
  SEINET11610645  Pinus lambertiana David Charlet 1996-7-8 2291 Lassen Diamond Mts; Sierra Nevada Janesville Grade, Great Basin drainage (Honey Lake) 1859 Comment
  RSA518540  Pinus ponderosa George K. Helmkamp 1990-10-4 12 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  POM73008  Plagiobothrys Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC227994  Plagiobothrys Ella Dales Cantelow 1941-5-22 3474 Lassen 5 miles W of Susanville, State Highway 36 Comment
  RSA0011556  Plagiobothrys R. F. Thorne, Larry E. DeBuhr 1975-8-22 46996 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  POM204143  Plagiobothrys bracteatus J. T. Howell 1934-7-10 12540 Lassen Patterson Flats Comment
  CHSC60332  Plagiobothrys cognatus Mary Ann Showers 1992-6-13 2547 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC110891  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC110913  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 A Lassen Along a very small drainage, 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
  CHSC117547  Plagiobothrys cusickii Lowell Ahart; John Dittes 2016-7-13 21114 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the northern slope of Big Valley. 1289 Comment
  CHSC93699  Plagiobothrys cusickii Lowell Ahart; John Dittes 2005-6-2 11954 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  JEPS121292  Plagiobothrys cusickii Lowell Ahart, John Dittes 2013-7-22 18870 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS124383  Plagiobothrys cusickii Lowell Ahart, John Dittes 2015-7-13 20305 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SBBG125478  Plagiobothrys cusickii L. Ahart 2012-7-9 18284 Lassen ca. 100 yards SE of tall poles, Ash Crk State Wildlife Area, ca. 5.5 mi NE of Bieber, Big Valley 1267 Comment
  SJSU8035  Plagiobothrys cusickii J. W. Tilden 1960-6-27 1518 Lassen 5 mi E of Westwood by Moonlight Rd 1524 Comment
  CHSC29970  Plagiobothrys hispidulus R. A. Schlising 1979-6-7 3452 Lassen S end of Eagle Lake, at Papoose Creek and Meadow in Lassen National Forest. In streambed. 1584 Comment
  UC1025083  Plagiobothrys hispidulus Leo Whitney 1933-8-14 2002 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1609215  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1993-6-14 5510 Lassen ca 3 mi (air) w. Eagle Lake (junction of Lassen A1 (Eagle Creek Rd.) with Lassen A21 (32N02)) 1813 Comment
  UC773949  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1743 Comment
  CAS-BOT-BC224976  Plagiobothrys hispidulus Clarence R. Quick 1962-6-17 62 27 C Lassen Swains Hole, S of Blacks Mountains Experimental Station 1615 Comment
  UC100839  Plagiobothrys hispidus Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  CHSC93687  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
  CHSC71078  Plagiobothrys leptocladus Vernon H. Oswald; Lowell Ahart 1998-5-22 9099 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. On the bed of a vernal pool. 1316 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
  CAS-BOT-BC228462  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen Along edge of Moll Res. W of Ash Valley 1606 Comment
  HSC31353  Plagiobothrys mollis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19273 Lassen Harvey Valley near Cone Springs Comment
  SBBG6336  Plagiobothrys mollis H. and M. Dearing 1939-6-6 3567 Lassen marsh on Pitt River, Bieber Comment
  CAS-BOT-BC228466  Plagiobothrys mollis Clarence R. Quick 1962-6-17 62 25 B Lassen Swains Hole, S of Blacks Mountain Experimental Station 1554 Comment
  CHSC66721  Plagiobothrys mollis var. mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  RSA39738  Plagiobothrys scouleri var. hispidulus P. A. Munz 1947-5-20 11891 Lassen Milford. 1265 Comment
  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
  SEINET10873743  Plagiobothrys tenellus Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 875 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  CHSC12416  Platanthera Anne Linda Brisk 1969-6-26 23 Lassen 7.2 mi SW of ELBS. 1584 Comment
  CAS-BOT-BC136632  Platanthera A. M. Vollmer; L. Beane 1953-7-1 74 Lassen Field redacted by CAS, contact the data manager for more information 1554 Comment
  SD7498  Platanthera sparsiflora Mrs. R. M. Austin 1880-1 Lassen No further locality information given on label on specimen sheet. Comment
  JEPS118449  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
  JEPS120863  Plectritis macrocera Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18747 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1069840  Pleiacanthus spinosus H. S. Yates 1936-8-11 6064 Lassen near Milford; Amedee Quad. 1280 Comment
  CAS-BOT-BC254944  Poa bulbosa John Thomas Howell 1975-7-23 51395 Lassen Susanville 1295 Comment
  CHSC58052  Poa bulbosa Vernon H. Oswald 1992-5-18 4942 Lassen Lassen Volcanic National Park. Butte Lake Campground. Woods bordering the service road near the boat launching area. 1847 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
  RSA450966  Poa bulbosa Barbara Shervanick 1974-5-7 1265 Lassen Highway 396, just south of Milford; Cascade Mountain Range 1372 Comment
  UCD90605  Poa bulbosa Alan A. Beetle; G. L. Stebbins Jr. 1942-5-29 3364 Lassen at Nubieber, near dwellings. Comment
  CAS-BOT-BC254943  Poa bulbosa Clarence R. Quick 1962-6-17 62 -29 Lassen On Western Pacific RR, S of Halls Flat on Susanville-Pittville road at Blacks Mountain Experimental Forest Headquarters 1706 Comment
  CAS-BOT-BC255128  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Long Valley, southern Warner Mountains, 3 miles E of Blue Lake 2133 Comment
  UCD37475  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Lassen County, 6 miles southeast of Jess Valley, 3 miles east of Blue Lake, southern Warner Mountains. 2133 Comment
  JEPS120878  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18780 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC2046021  Poa pratensis Barbara L. Wilson with Danna Lytjen and Nick Otting 2005-7-29 11508 Lassen Blue Door Flat, seven or eight miles east of Highway 295 on county road 510. Comment
  UCD91956  Poa pratensis R. Tofsrud 1947-7-24 213 Lassen 13 miles E of Madeline. Comment
  CHSC99523  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2008-6-22 15020 Lassen On the road sides of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC1132873  Poa pratensis subsp. pratensis Robert W. Gardner 1937-6-18 G- 8 Lassen Burgess Spring Experimental Range; Halls Flat Quadrangle Comment
  UC604682  Poa pratensis subsp. pratensis Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  UCR244104  Poa pratensis subsp. pratensis Jim Andre, G. L. Clifton 1993-6-9 19698 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
  POM100297  Poa secunda Marcus E. Jones 1897-6-23 11426 Lassen Amedee. 1220 Comment
  POM112877  Poa secunda Marcus E. Jones 1897-6-19 11137 Lassen Chat 1616 Comment
  POM180946  Poa secunda P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia. Comment
Read comments
Jan 6 2015
  SEINET10966852  Poa secunda Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2602 Lassen Hallelujah Jct. intersection of US Hwy 395 & CA Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  CAS-BOT-BC236252  Poa secunda subsp. juncifolia John Thomas Howell 1934-6-14 12172 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CAS-BOT-BC236256  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 miles W of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC251087  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49460 Lassen Elysian Valley, west of Janesville 1325 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
  UC1037123  Poa secunda subsp. juncifolia Leo Whitney 1935-6-23 3285 Lassen near Camp 10 Fruit Grower's Supply Company Comment
  UC1137292  Poa secunda subsp. juncifolia K. E. Bradshaw 1939-5-27 236 Lassen Plot 39-1 Black Mt Experimental Forest; Lassen Nat'l Forest, Halls Flat Quadrangle 1752 Comment
  UCD92165  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2048 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  CAS-BOT-BC236180  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49197 Lassen Elysian Valley NW of Janesville 1325 Comment
  CAS-BOT-BC236181  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49196 Lassen Elysian Valley NW of Janesville 1325 Comment
  CHSC33317  Poa secunda subsp. secunda Hank Thompson 1980-4-14 19 Lassen Ca. 20 mi E of Susanville. 1310 Comment
  JEPS107471  Poa secunda subsp. secunda Lowell Ahart, John Dittes 2005-6-1 11845 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  RSA715613  Poa secunda subsp. secunda L. Ahart, John Dittes 2005-6-1 11845 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1132877  Poa secunda subsp. secunda K. E. Bradshaw 1939-5-27 236 Lassen Black Mt Experimental Forest, center of Plot 39-1 Black Mt Experimental Forest; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132883  Poa secunda subsp. secunda A. Simontacchi 1940-5-13 697 Lassen 4.6 mi sw of B. M. 7310 on Blacks Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1136988  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 219 Lassen Lassen Nat'l Forest 1722 Comment
  UC1142953  Poa secunda subsp. secunda A. L. Hormay 1941-6-26 37 Lassen Bogard Ranger Station, Pine Creek Bogard Ranger Station; Lassen Nat'l Forest 1706 Comment
  UC70958  Poa secunda subsp. secunda M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  UCD91756  Poa wheeleri L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp 10. Comment
  CHSC60907  Pogogyne floribunda Vernon H. Oswald; Lowell Ahart 1993-7-8 5675 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  JEPS112858  Polemonium micranthum Dean Wm. Taylor, Glenn L. Clifton 1992-5-7 12548 B Lassen Eagle Lake Region, Pine Creek, on Forest Road 33N07 ca. 0.8 mile S of Byrgess Flat, 1767 Comment
  RSA104308  Polemonium micranthum Verne Grant, Alva Grant 1956-5-18 21755 Lassen 4 miles S of Ravendale. 1280 Comment
  HSC95275  Polemonium occidentale Gordon Leppig 1998-7-12 949 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC449772  Polemonium occidentale Franklin P. Nutting 1894-7-28 Lassen Bridge Creek Bridge Creek (Northern California) Comment
  CAS-BOT-BC74169  Polyctenium fremontii Arnold Tiehm; Jan Nachlinger; Gary Schoolcraft 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 Comment
  JEPS13801  Polyctenium fremontii Dr. Loughridge 1912-1 Lassen Madeline Plains 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
  SEINET3562962 Image available Polyctenium fremontii Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, mud flats along the highway. 1347 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
  CHSC68619  Polyctenium fremontii var. fremontii Vernon H. Oswald; Lowell Ahart 1997-5-7 8405 Lassen Mud Flat along Smoke Creek Ranch Rd. 1.7 mi east of Hwy. 395. 1356 Comment
  SEINET5326413  Polyctenium williamsiae A. Tiehm, J. Nachlinger, M. J. Williams 1988-1 11703 Lassen On highway 395 from Susanville to Alturas, 6.6 road miles N of the Wendel Road. 1347 Comment
  CAS-BOT-BC167848  Polygala subspinosa H. D. Ripley; R. C. Barneby 1943-6-15 5760 Lassen E. of Viewland 1310 Comment
  CAS-BOT-BC6541  Polygala subspinosa Amos Arthur Heller 1938-6-23 15213 Lassen south of Secret Valley Comment
  CHSC117618  Polygala subspinosa L. P. Janeway and B. Castro 2015-6-5 11765 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  JEPS28709  Polygonum George W. Gillett 1957-7-29 939 Lassen near w end of Widow Lake, Lassen Volcanic National Park Widow Lake; Lassen Volcanic National Park, Widow Lake 2072 Comment
  POM104579  Polygonum amphibium var. stipulaceum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC849110  Polygonum bistortoides A. A. Heller 1938-6-23 15141 Lassen 2 mi e Westwood Comment
  CAS-BOT-BC414487  Polygonum douglasii G. Schoolcraft 1989-6-19 1918 Lassen Ash Valley RNA/ACEC Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS117591  Polygonum douglasii subsp. douglasii Lowell Ahart, John Dittes 2010-7-31 16978 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
  CHSC60762  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  CHSC58849  Polygonum douglasii subsp. spergulariiforme Vernon H. Oswald; Lowell Ahart 1992-7-16 5125 Lassen Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1.0 mi E of Willow Spring Rd. (Forest Rd. 31N56), between Old Station and Susanville. 1745 Comment
  CHSC84438  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  UC1594644  Polygonum douglasii subsp. spergulariiforme Vernon H. Oswald and Lowell Ahart 1992-7-16 5125 Lassen Bridge Creek Spring Rd. (County Rd 112, Forest Rd. 31N06) 1.0 mi e Willow Spring Road (Forest Rd. 31N56) (between Old Station and Susanville) 1745 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
  CAS-BOT-BC419860  Polygonum polygaloides subsp. confertiflorum Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 757 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  POM312907  Polygonum polygaloides subsp. confertiflorum S. Galen Smith, H. L. Mason, Malcom A. Nobs 1949-5-29 757 Lassen Marsh, on Great Northern Railroad, Hwy 299, Nubeiber Comment
  UC1137591  Polygonum polygaloides subsp. confertiflorum A. Simontacchi 1940-6-15 875 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1520661  Polygonum polygaloides subsp. confertiflorum Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9466 Lassen along US 395 5.6 km (3.5 mi) s Madeline; Madeline Plains 1620 Comment
  UC1594529  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1992-7-16 5104 a Lassen on s side of Hwy 44 1.2 mi se County Rd. A21 (between Old Station and Susanville); Long Lake 1745 Comment
  UC1060646  Polygonum polygaloides subsp. kelloggii Herbert L. Mason 1957-7-5 14712 Lassen between Madeline and summit of grade; Madeline Plains Comment
  JEPS51302  Polygonum sawatchense subsp. oblivium Brown and Wieslander 1922-7-23 54 Lassen Martin Sprs. Eagle Lake Comment
  JEPS87367  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
  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
  CHSC110900  Polypogon monspeliensis Lowell Ahart; John Dittes 2012-7-9 18300 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
  CHSC117532  Polypogon monspeliensis Lowell Ahart; John Dittes 2016-7-3 21147 -A Lassen Scattered along the west edge of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCR7792  Polypogon monspeliensis Marilyn Malin 1968-7-11 259 Lassen West side of Hwy 395 on west side of Honey Lake 1280 Comment
  CHSC67067  Populus fremontii Willis Ball 1969-6-25 33 Lassen Found in Upper Murrer's Meadow. 1584 Comment
  JEPS96122  Porterella carnosula Vernon H. Oswald and Lowell Ahart 1996-6-24 7854 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), w side Papoose Meadows, ca 0.3 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC803937  Porterella carnosula G. L. Stebbins Jr. 1949-8-6 4002 Lassen edge Feather Lake (between Susanville and McArthur Mud Flats) 1676 Comment
  SEINET10460760  Porterella carnosula Eggleston 1927-7-11 EGGLESTON 21476 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  SEINET10460830  Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1978-6-10 Holmgren 8901 Lassen Madeline Plains, Coyote Flat, 14.5 km (9 mi) east-northeast of Termo and 13 km (8 mi) airline distance. T35N R15ES7 1630 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
  UCD138215  Potamogeton amplifolius Verne Grant; Irving Schneider Date Unknown 8269 Lassen northern part of county. Northwest shore of Blue Lake. 1981 Comment
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  CHSC4804  Potamogeton filiformis R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UC1100045  Potamogeton foliosus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1477 Lassen 1 mi n of Doyle (banks of Long Creek); Honey Lake Valley Comment
  UCR196279  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  UCD58790  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  CHSC59158  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1992-7-16 5118 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. In streamlets in the meadow. 1719 Comment
  UC1100074  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8244 Lassen e end of Tule Lake Comment
  UC1100076  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-31 8201 Lassen sw of Madeline (George Williams' Ranch); Madeline Plan Comment
  CAS-BOT-BC453915  Potamogeton pectinatus W. I. Follett; S. B. Benson 1957-11-2 s.n. Lassen Tributary of Secret Creek, 1.1 mi. n. of Karlo Comment
  SEINET9322243  Potamogeton perfoliatus var. richardsonii Robert Thorne, DeBuhr, Larry 1975-8-22 47200 Lassen Hwy 395 Comment
  RSA323730  Potamogeton pusillus A. Tiehm, Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  POM118839  Potamogeton zosteriformis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS88679  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen along Ash Creek at the crossing of Ash Valley Road (Lassen County Road 527, Forest Road 39N08) Modoc Plateau, along Ash Creek, Ash Valley (Ash Valley) 1554 Comment
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 Comment
  UC12523  Potentilla fruticosa M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  CHSC27742  Potentilla glandulosa subsp. ashlandica N. E. Heiken 1978-7-5 76 Lassen S of Eagle L., E shore of Mahogany L. 2060 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
  CHSC13850  Potentilla gracilis var. fastigiata F. T. Griggs 1973-7-7 106 Lassen Lassen county Cone Spring. Comment
  CHSC4985  Potentilla gracilis var. fastigiata R. Clicquennoi 1967-6-24 12 Lassen NW corner of Eagle Lake on highway 139. 1524 Comment
  UC773876  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spring Experiment Range Lassen National Forest 1767 Comment
  CAS-BOT-BC540359  Potentilla gracilis var. fastigiata Alice Eastwood 1912-8-22 1870 Lassen Lassen Butte Region: Morgans Springs Comment
  CHSC5003  Potentilla millefolia K. C. Newman 1967-7-14 87 Lassen Collected in meadow along SH 44 about 15 mi. from the junction of SH 36 going toward Redding. 1828 Comment
  CHSC7046  Potentilla millefolia E. L. Williams 1969-4-28 18 Lassen Meadow on Highway 32, 58 mi toward Chester. 259 Comment
  CAS-BOT-BC158514  Potentilla millefolia G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  CAS-BOT-BC158517  Potentilla millefolia 1927-6-10 7 Lassen Lassen National Forest. Norval Flat 2051 Comment
  JEPS126563  Poterium sanguisorba Lowell Ahart, John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CAS-BOT-BC159779  Prunus andersonii James Moffitt 1934-6-27 147 Lassen Near Milford Comment
  RSA0028244  Prunus andersonii John F. Emmel 1994-7-18 1335 Lassen Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle. 1305 Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  UCD35732  Prunus emarginata Beecher Crampton 1960-6-18 5725 Lassen southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  HSC25730  Prunus virginiana var. demissa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19164 Lassen 3 mi. N of Westwood Comment
  CHSC61950  Pseudognaphalium thermale Brian Murray 1992-5-31 3 Lassen 1/2 mile East of four corners on Willow Creek Rd. On the side of the road. Comment
  UCD91507  Pseudoroegneria spicata Beecher Crampton 1964-6-27 7089 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  UCD91514  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51999 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  UC718009  Pseudoroegneria spicata subsp. spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada 1341 Comment
  CHSC67079  Pseudostellaria jamesiana Jeanne Boze 1981-6-13 116 Lassen On northeast slope of Galletin Peak. 1981 Comment
  CHSC68858  Pseudostellaria jamesiana Vernon Oswald; Lowell Ahart 1997-6-24 8619 Lassen South of Susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43, ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. 2036 Comment
  UC120048  Pseudostellaria jamesiana unknown 1892-7-2 Lassen Susanville Comment
  CHSC27600  Psilocarphus brevissimus var. brevissimus J. D. Prouty 1978-6-28 4 Lassen Lower Dry Lakes, SE of Eagle L. Comment
  CAS-BOT-BC361752  Psilocarphus brevissimus var. brevissimus Clarence R. Quick 1962-6-17 62 25 B Lassen Swains Hole, a man-made pond in sagebrush south of Blacks Mountain Experimental Station 1554 Comment
  SBBG63215  Psilocarphus tenellus E. Rockwell -Jun-1925 221 Lassen Eagle Lake 1554 Comment
  CHSC80646  Psoralidium lanceolatum Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10040 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  NY702518  Psoralidium lanceolatum H. D. D. Ripley 1944-5-29 5952 Lassen North of Doyle 1341 Comment
  CHSC105259  Pterospora andromedea Lowell Ahart; John Dittes 2010-7-31 17007 Lassen On the sout side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  HSC93745  Pterospora andromedea Gordon Leppig, Sylvia Leppig, Juli Neander, Kai Neander 1998-8-18 1059 Lassen Blue Lake Campground, Modoc National Forest. 1860 Comment
  CAS-BOT-BC453500  Pterospora andromedea John Thomas Howell; Gordon H. True 1973-7-31 50024 Lassen Sierra Nevada, on road from Janesville to Thompso Peak, Diamond Range 1737 Comment
  UCD91531  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area. 1981 Comment
  JEPS114875  Puccinellia lemmonii Lowell Ahart, John Dittes 2008-6-20 14967 Lassen Saline area, about 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS103184  Puccinellia nuttalliana G. Schoolcraft 2000-6-12 2908 Lassen Cold Spring Reservoir at NE end of Madeline Plains 1645 Comment
  CDA26233  Purshia tridentata S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC1588  Purshia tridentata V. Holt 1935-5-31 Lassen Near Susanville. 1310 Comment
  CAS-BOT-BC147818  Purshia tridentata var. tridentata Clarence Quick 1963-7-12 63 -31 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 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
  RSA122151  Purshia tridentata var. tridentata K. e. Bradshaw 1939-5-27 234 Lassen S end of Black Mtn E.F. Plot 39-1. Lassen Forest. 1753 Comment
  RSA86630  Purshia tridentata var. tridentata F. W. Peirson 1932-7-20 10355 Lassen 20 miles SE of Susanville. Comment
  UC1137303  Purshia tridentata var. tridentata George A. Fischer and Irwin H. Johnson 1933-7-12 F 212 Lassen Lassen National Forest 1722 Comment
  UC12421  Purshia tridentata var. tridentata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC773873  Purshia tridentata var. tridentata L. R. Short and Wm. Gansberg 1936-7-9 S- 482 Lassen Burgess Spring Experimental Range; Lassen National Forest 1792 Comment
  CAS-BOT-BC462756  Pyrola dentata Clare B. Hardham 1969-8-28 17446 Lassen Sierra Nevada: west of Janesville. Comment
  UC469065  Pyrrocoma hirta var. hirta Franklin P. Nutting Lassen Dixey Valley , Northern California Comment
  UC1143034  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1783 Comment
  UC35843  Pyrrocoma hirta var. lanulosa M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  SD108109  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Highway 395 Comment
  JEPS100333  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17838 Lassen meadow 0.5 air mi S of Doyle Grade, along private road in rural residential area Feather River Watershed 1859 Comment
  JEPS93954  Pyrrocoma racemosa var. paniculata Vernon H. Oswald 1998-9-14 9625 Lassen Windy Hollow on the w side of Highway 44 ca. 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44 1737 Comment
Read comments
Jun 3 2007
  UC1192231  Pyrrocoma racemosa var. paniculata Verne Grant and Irving Schneider 1947-9-6 8392 Lassen near Wendel (w of Fleming Rach Headquarters) Comment
  CAS-BOT-BC105246  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen SW of Susanville on Gold Run Road 1341 Comment
  CHSC91189  Quercus kelloggii Lowell Ahart; John Dittes 2005-6-2 11942 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  HSC95453  Ranunculus aquatilis Gordon Leppig, Tony LaBanca 1997-6-29 539 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC99502  Ranunculus aquatilis var. diffusus Lowell Ahart; John Dittes 2008-6-20 14974 Lassen On bottom of a vernal pool, mountain meadow, 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
  JEPS121299  Ranunculus aquatilis var. diffusus Lowell Ahart, John Dittes 2013-7-23 18891 Lassen Margins of a man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC67295  Ranunculus glaberrimus James D. Jokerst 1991-5-29 3313 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  UC1136880  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spr. Exp. Range Lassen National Forest 1737 Comment
  CHSC13795  Ranunculus macounii Cathy Crittenden 1970-7-8 37 Lassen Lower Murrer's Meadow along Willow Creek. 1463 Comment
  RSA0062308  Ranunculus occidentalis var. occidentalis Lowell A. Ahart, John Dittes 2011-6-20 17479 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  NY494769  Ranunculus occidentalis var. ultramontanus W. W. Eggleston 1911-5-29 6759 Lassen Vicinity of Doyle Station 1290 Comment
  CHSC7731  Ranunculus orthorhynchus Beverley J. Wise 1969-4-28 88 Lassen 9 mi. east of Susanville on south side of Las. Co. Rd. 215. Meadow. 1371 Comment
  CDA3488  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville. 0 Comment
  CHSC27740  Ranunculus uncinatus Jennifer Estep 1978-7-5 10 Lassen E side of Mahogany L. 2060 Comment
  CHSC52793  Ranunculus uncinatus Cindy Prouty 1978-7-5 1 Lassen E shore of Mahogany L., S of Eagle L. Found in meadow. 2060 Comment
  CHSC60392  Ranunculus uncinatus var. uncinatus Mary Ann Showers 1992-6-13 2539 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  JEPS127178  Rhaponticum repens Lowell Ahart, John Dittes 2016-7-15 21229 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
  SBBG2740  Ribes aureum H. and M. Dearing 1939-6-6 3563 Lassen Pitt River, Bieber Comment
  JEPS28678  Ribes cereum George W. Gillett 1957-7-26 916 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  JEPS49450 Image available Ribes cereum Jos. Grinnell 1928-6-28 Lassen slope of Prospect Mt. 2133 Comment
  NY455007  Ribes cereum B. M. Bartholomew 1988-7-22 4503 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC75460  Ribes inerme var. inerme Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  HSC20330  Ribes roezlii Jim Vaughn 1956-8-5 Lassen Upper Hot Springs Creek, Devils Kitchen area, Mt. Lassen National Park 1829 Comment
  SEINET10838520  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 309 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC186150  Ribes roezlii var. roezlii Alice Eastwood 1912-8-22 1874 Lassen Morgans [Morgan] Springs, Lassen Butte Region Comment
  CAS-BOT-BC186151  Ribes roezlii var. roezlii Brighton C. Cain 1925-8-24 96 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 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
  JEPS49252  Ribes velutinum W. L. Jepson 1918-8-5 7820 Lassen near South Fork Peak 1463 Comment
  UC1136911  Ribes velutinum L. R. Short and Wm. Gansberg 1936-7-9 S- 481 Lassen MDM, Burgess Spr. Exp. Range Lassen Forest 1783 Comment
  UCR248242  Ribes velutinum J. R. Keck Jr. 1977-8-10 s.n. Lassen Lassen National Forest, near Puls Camp east of Blacks Mountain 1829 Comment
  SEINET10482959  Ribes velutinum Mary Susan Taylor 1974-1 Taylor 288 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC106090  Rigiopappus leptocladus Lowell Ahart; John Dittes 2010-7-31 16980 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
  CHSC117224  Rigiopappus leptocladus Lowell Ahart; John Dittes 2016-6-7 20976 Lassen 20 yards west of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC82187  Rigiopappus leptocladus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6036 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC1951063  Rigiopappus leptocladus Debra Valov 2007-5-22 2007077 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CDA8540  Rigiopappus leptocladus T. C. Fuller 1963-6-1 10624 Lassen Road to Susanville, 2.2 miles south of Pittville. 0 Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  JEPS28472  Rorippa curvisiliqua George W. Gillett 1957-7-21 862 Lassen Juniper Lake- Cameron Meadow trail (300 yards n of trail summit, Lassen Volcanic National Park); Lassen Volcanic National Park 2118 Comment
  UC10717  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-7-1 Lassen Dixey Mts. Comment
  RSA0065538  Rorippa curvisiliqua Marion P. Harthill 1971-6-20 216 Lassen Susanville. Comment
  CHSC113059  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2013-7-22 18855 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  NY181932  Rorippa curvisiliqua var. orientalis V. E. Grant 1947-8-1 8237 Lassen East end of Tule Lake. Comment
  CHSC4261  Rorippa nasturtium-aquaticum K. R. Stern 1967-6-24 2405 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  JEPS127167  Rorippa palustris subsp. palustris Lowell Ahart, John Dittes 2016-7-15 21218 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC117284  Rorippa palustris var. fernaldiana Lowell Ahart; John Dittes 2016-7-15 21218 Lassen Along a ditch west of the road, 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
  CHSC12477  Rosa woodsii subsp. ultramontana Carol Weld 1969-6-26 42 Lassen Springs near roadside, 7.8 miles S.W. of Eagle Lake Field Station. 1584 Comment
  HSC81474  Rosa woodsii subsp. ultramontana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6019 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  CHSC106587  Rosa woodsii var. ultramontana C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  RSA647522  Rosa woodsii var. ultramontana Marion P. Harthill 1972-6-16 803 Lassen Litchfield 1311 Comment
  POM90170  Rosa woodsii var. ultramontana Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CHSC6261  Rubus leucodermis P. Balch 1955-7-20 Lassen Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville. 1615 Comment
  HSC19712  Rubus parviflorus M. S. Baker 1890-1 Lassen Milford Comment
  UC1070543  Rumex H. S. Yates 1936-8-11 6057 Lassen near Red Rock; Sierraville Quad. 1341 Comment
  UC1746173  Rumex Annetta M. Carter 1945-9-30 1720 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  SEINET10479394  Rumex acetosella Jeffrey Huber 1971-6-11 Huber 319 Lassen 3 mi E of Westwood, on CA Hwy 36; in volcanic soils (basalt), in Pinus jeffreyi. 1608 Comment
  UC452560  Rumex crispus Franklin P. Nutting Lassen near Lookout; Big Valley Comment
  UC748311  Rumex crispus Annie M. Alexander and Louise Kellogg 1946-8-11 5151 Lassen Madeline Comment
  CHSC1357  Rumex hymenosepalus M. Anthony 1954-5-1 Lassen Hwy 395 between Susanville and Hallelujah Jct. Comment
  CAS-BOT-BC433632  Rumex lacustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13266 Lassen Along United States Highway 395, 11.8 miles north-east of Litchfield Comment
  CHSC112393  Rumex salicifolius Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18774 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1036083  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5152 Lassen 4 to 6 mi s Madeline Comment
  UC1745691  Rumex salicifolius var. lacustris Annetta M. Carter 1945-9-30 1718 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC452568  Rumex salicifolius var. salicifolius Franklin P. Nutting Lassen n side Dixie Mts. Comment
  CDA23213  Rumex salicifolius var. triangulivalvis T. C. Fuller 1959-7-7 Lassen Highway 395, 11 miles south of Ravendale. 0 Comment
  JEPS74706  Rumex venosus Wayne Roderick 1969-5-24 Lassen along Hwy 395 near Janesville Comment
  SEINET8584738  Rumex venosus W. Harnach 2011-6-4 1247 Lassen NE slope of Turtle Mtn., Fort Sage Mtns., Honey Lake Valley, approx. 7.5 miles NE of Doyle, CA on the Fort Sage Road. 1329 Comment
  UC1776705  Rumex venosus G. Schoolcraft 1993-6-1 2267 Lassen Along Hwy 395 about 1.5 mi. n. of turnoff to Wendel 1280 Comment
  UC568  Sagittaria State Geological Survey 1800-1 2189 Lassen Comment
  CHSC5006  Sagittaria cuneata L. G. Bennett 1968-7-8 124 Lassen Murrers Meadow, north end, near Eagle Lake. 1493 Comment
  CHSC5927  Sagittaria cuneata J. B. Kimsey 1946-6-17 Lassen Grasshopper Valley. 1624 Comment
  CHSC96721  Salix arctica Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  POM362636  Salix bonplandiana Christopher Davidson 1975-6-6 2725 Lassen Ca 3.5 miles on road to Thompson Peak. Branching E of rd 204 ca 7.5 miles SW of Susanville. (Rd 204 follows Gold Run Cr.) 1677 Comment
  UCD110753  Salix boothii T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volc. Nat'l Park. 2225 Comment
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Jul 11 2013
  CHSC65120  Salix eastwoodiae Vernon H. Oswald; Lowell Ahart 1995-7-24 7140 Lassen Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. 1905 Comment
  HSC95346  Salix eastwoodiae Gordon Leppig, J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC481924  Salix exigua var. hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen at edge of Pit River McArthur 960 Comment
  JEPS107798  Salix jepsonii Lowell Ahart, John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  SEINET10932103  Salix lasiandra Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 889 Lassen Collected 3 mi n of milford on hwy 395 at honey lake campgrounds. Comment
  JEPS114627  Salix lasiandra subsp. lasiandra Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  NY187800  Salix lucida subsp. caudata J. T. Howell 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville 1325.9 Comment
  SEINET10417120  Salix lucida subsp. caudata G. Schoolcraft 1995-5-14 2477 Lassen W of Susan Hills subdivision, SW of Susanville. 1372 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
  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
  UC1136482  Salsola tragus E. Sawyer 1935-6-27 218 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CDA5749  Salvia aethiopis Margaret Bellue Jul 1949 Lassen Susanville. 0 Comment
  CDA5754  Salvia aethiopis C. Siebe, W. V. Johnson 1958-7-11 Lassen Westwood. 0 Comment
  UCD125448  Salvia aethiopis J. M. Tucker 1950-7-26 1979 Lassen outskirts of Susanville, on east side of town. Comment
  SEINET8018246  Salvia dorrii var. pilosa J. A. Young 1982-6-7 s.n. Lassen NE Lassen County, Redlands. 1676 Comment
  CHSC12422  Sambucus mexicana Anne Linda Brisk 1969-6-26 28 Lassen 7.2 mi SW of ELBS on Road 4.25. 1584 Comment
  CHSC12487  Sambucus mexicana Carol Weld 1969-6-26 45 Lassen 7.8 miles SW of Eagle Lake Field Station. 1584 Comment
  CHSC60277  Sambucus mexicana P. V. Caldwell 1972-6-23 247 Lassen Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow, on the bank. Comment
  UC1136751  Sambucus mexicana L. R. Short and J. Warren 1936-7-28 S- 490 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  UCD137207  Sambucus nigra subsp. caerulea P. B. Schultz 1967-7-12 78 Lassen 14 miles southeast of Adin on State Highway 139. 1524 Comment
  CHSC60347  Sambucus racemosa var. microbotrys Mary Ann Showers 1992-6-13 2557 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  UC1598734  Sanicula tuberosa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  SEINET3239873  Santalaceae R. L. Mathiasen 2010-1 1018 Lassen 16 km W of north entrance to Lassen Nat. Park on Rte. 44 1380 Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CDA19211  Sarcobatus vermiculatus D. Kratville 2001-6-21 s.n. Lassen Modoc Plateau; Outside of Susanville. 0 Comment
  UC1136501  Sarcobatus vermiculatus E. Sawyer 1935-6-27 216 Lassen Sierraville Quad., Long Valley Comment
  UCR67389  Sarcobatus vermiculatus George K. Helmkamp 1990-9-23 D- 5 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UC1609185  Saxifraga aprica Vernon H. Oswald and Lowell Ahart 1993-5-12 5373 Lassen sw side of Hwy 44 (0.9 mi nw of its intersection with A21 (to Westwood)) 1737 Comment
  UC1127669  Saxifraga nidifica var. nidifica A. Simontacchi 1940-5-14 726 Lassen 4.1 mi wnw of Aspen Well (Lassen National Forest); Lassen National Forest 1767 Comment
  JEPS47551  Saxifraga oregana Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC283086  Schedonorus arundinaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49474 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC283611  Schedonorus pratensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49466 Lassen Elysian Valley, W of Janesville 1325 Comment
  RSA252375  Schoenoplectus acutus var. occidentalis Robert F. Thorne, C. W. Tilforth 1969-9-6 39256 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  UC2156  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3294 Lassen Byers' meadows , Byers' meadows (Honey Lake Valley) Comment
  CAS-BOT-BC214268  Scutellaria nana Richard Olmstead 1984-6-27 584 Lassen Rye Patch Canyon Rd., 13.2 mi E of US 395, turnoff ca 14 mi. S of Ravendale 1548 Comment
  HSC82251  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6010 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM80110  Scutellaria nana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1537581  Scutellaria nana Gordon H. True Jr. 1936-6-25 540 Lassen e of Harvey Valley Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  UC1549236  Scutellaria nana Richard Olmstead 1984-6-27 581 Lassen turnoff 14 mi s of Ravendale (10.3 mi e of US 395); Rye Patch Canyon Road 1603 Comment
  RSA647520  Secale cereale Marion P. Harthill 1972-6-16 788 Lassen Doyle 1372 Comment
  UC790980  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi s of Ravendale (Observation Peak); Observation Peak Comment
  CHSC60822  Senecio hydrophiloides Vernon H. Oswald; Lowell Ahart 1993-6-28 5600 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. Meadow. 1725 Comment
  CHSC99108  Senecio hydrophilus Lowell Ahart; John Dittes 2008-6-20 14907 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1594646  Senecio hydrophilus Vernon H. Oswald and Lowell Ahart 1992-7-16 5128 Lassen Feather Lake on s side Bridge Creek Spring Rd. ((County Rd. 112, Forest Rd. 31N06), ca 0.4 mi e of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02) between Old Station and Susanville); Feather Lake 1749 Comment
  JEPS85743  Senecio integerrimus var. exaltatus Roy E. Buck and Robert A. Price 1988-6-26 1031 Lassen ca 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  UC1063253  Senecio integerrimus var. exaltatus A. Simontacchi 1940-5-15 712 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quad. 1699 Comment
  RSA0124942  Senecio integerrimus var. exaltatus Philip A. Munz 1947-5-18 11861 Lassen Fredonyer Forest Public Camp Ground, west of Susanville. 1509 Comment
  UC1562580  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  UC36171  Senecio triangularis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC82190  Sidalcea glaucescens Thomas W. Nelson, Jane Nelson 1980-7-6 6039 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC205766  Sidalcea oregana L. S. Smith 1918-8-12 1031 Lassen Modoc National Forest. Camp One Comment
  UCD116829  Sidalcea oregana P. B. Kennedy 1927-6-13 s.n. Lassen Fall River, by intake above dtich. Comment
  HSC95261  Sidalcea oregana subsp. spicata Gordon Leppig 1998-8-17 1050 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SCFS927  Sidalcea oregana subsp. spicata L. Loeblich 1964-7-1 72 Lassen Along Hwy 299 going W, 0.5 mi W of jct of A-2 and Hwy 139 1250 Comment
  JEPS50913  Silene douglasii Brown and Wieslander 1922-7-23 33 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  SEINET10733247  Silene douglasii Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 846 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44. 1971 Comment
  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
  CHSC83192  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). Meadow. 1700 Comment
  CHSC91925  Silene nuda L. P. Janeway 2005-7-31 8511 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  UCD18969  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  CDA18271  Silene verecunda subsp. andersonii G. D. Barbe 1974-8-2 1936 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  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
  CHSC64775  Sisymbrium orientale Vernon H. Oswald 1995-5-31 6803 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  JEPS114987  Sisyrinchium bellum Lowell Ahart, John Dittes 2008-6-20 14964 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS88552  Sisyrinchium bellum Vernon H. Oswald and Lowell Ahart 1996-6-24 7875 .1 Lassen ca 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, in meadow bordering Papoose Creek where it leaves the n end of the meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  CAS-BOT-BC34688  Solanum lycopersicum J. H. Thomas 1969-9-7 15468 Lassen Susanville. Near center of town in disturbed fields, near a drivein. Comment
  CDA34234  Solanum sarrachoides L. Ahart, J. Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4,235 feet from Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC59081  Solidago elongata Vernon H. Oswald; Lowell Ahart 1992-8-25 5177 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Edge of meadow. 1950 Comment
  UCR67459  Solidago occidentalis George K. Helmkamp 1990-9-23 G- 10 Lassen north of Ravendale 1677 Comment
  CHSC116096  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2015-7-13 20304 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC59194  Sparganium angustifolium Vernon H. Oswald; Lowell Ahart 1992-9-15 5214 Lassen Lassen Volcanic National Park. Island Lake located N of Bonte Pk. and ca. 1.5 mi W of Juniper Lake campgrounds. On the margin of the lake. 2164 Comment
  CHSC66285  Sparganium emersum subsp. emersum Vernon H. Oswald; Lowell Ahart 1996-6-24 7871 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  CAS-BOT-BC213212  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Transplanted to the garden of Edward and Luella Bass in Standish, from Stacy, east of the south end of Honey Lake 1219 Comment
  POM91114  Spiraea douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS64515  Spiranthes romanzoffiana Brown and Wieslander 1922-7-30 49 Lassen Martin Sprs. Eagle Lake Comment
  UC845562  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen meadow about 1 mi e Westwood 1524 Comment
  CHSC5277  Stachys ajugoides var. rigida P. Balch 1955-7-17 Lassen Papoose Creek, near Gallatin's. Eagle Lake. 1615 Comment
  UC1483862  Stachys ajugoides var. rigida G. Schoolcraft 1980-8-13 348 Lassen n side Diamond Mtn. 1950 Comment
  SEINET7977004  Stachys rigida C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  JEPS95975  Stanleya viridiflora Vernon H. Oswald and L. 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: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  UCD115760  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen near Karlo, about 12 miles north of Litchfield. 1356 Comment
  SEINET11924834  Stellaria longipes Unknown 1967-1 550 Lassen 25 yds W of dam in Murrer's Meadow Comment
  CHSC4785  Stellaria longipes var. longipes R. Carter 1967-6-29 574 Lassen In Murrer's Meadow, 100 yds. SE of dam. Comment
  JEPS107846  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2005-6-2 11992 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  UC120067  Stellaria longipes var. longipes unknown 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC375006  Stenotus acaulis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50659 Lassen Summit ridge of Diamond Mountain 2346 Comment
  JEPS89748  Stenotus lanuginosus var. lanuginosus Dean Wm. Taylor with Glenn L. Clifton 1992-5-7 12545 Lassen ca. 0.4 mi. from Hwy. 139 on rd. to Smith Flat (Willow Creek drainage); Modoc Plateau, Land Reservoir 7 1/2 Quad. 1990 ed., Willow C 1524 Comment
  CDA8837  Stephanomeria exigua S. E. Piper 1943-7-3 Lassen Sierra Ordnance Depot, Herlong. 0 Comment
  CAS-BOT-BC375596  Stephanomeria lactucina Alice Eastwood 1912-8-22 s.n. Lassen Trail from Morgans Springs to Lassen Butte Region Comment
  CAS-BOT-BC322925  Stephanomeria tenuifolia Clarence R. Quick 1964-8-5 64 -95 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CHSC66853  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1996-10-3 8296 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 13.4 mi N of Smoke Creek Ranch Rd. Roadside. 1524 Comment
  SEINET8061783  Stipa comata var. comata P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia 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
  UCR183194  Stipa thurberiana Jim Andre, G. L. Clifton 1993-5-28 7715 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  JEPS102871  Streptanthella longirostris Vernon H. Oswald 2001-6-2 10039 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  CHSC57125  Streptanthus Mary Meyer 1980-7-21 Lassen Near sharp bend in road on way to Fire Lookout. 2316 Comment
  SEINET10940334  Streptanthus cordatus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2606 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon juniper pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  UC1184065  Streptanthus tortuosus var. orbiculatus Jean Langenheim 1957-6-26 4381 Lassen from area adjacent to 1937 chaparral quadrat (ne part of Lassen Co.); Northwest Said Valley Comment
  UCD149957  Stuckenia filiformis subsp. alpina William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  HSC22877  Stuckenia pectinata John Pratt 1970-6-14 13 Lassen Comment
  UC7234  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3397 Lassen Amedee Honey Lake Valley Comment
  JEPS87423  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (Road 35N04 at Aspen Well, n of Hwy 44 on nw edge of Harvey Valley); Harvey Valley, Aspen Well 1725 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
  CAS-BOT-BC245874  Symphoricarpos rotundifolius T. S. Brandegee 1892-6-26 s.n. Lassen Milford Comment
  UC1536787  Symphoricarpos rotundifolius var. rotundifolius G. H. True 1936-6-27 553 Lassen just below summit of Hot Springs Mt. 1981 Comment
  CDA42242  Symphoricarpos rotundifolius var. rotundifolius Gordon Leppig, T. LaBanca 1998-7-13 964 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC103616  Symphyotrichum bracteolatum Thomas W. Nelson, Jane Nelson 1985-8-10 8007 Lassen Along north side of Silver Lake 1829 Comment
  UCD136493  Symphyotrichum campestre Verne Grant; Irving Schneider 1947-7-31 8210 Lassen northeast quarter of George Williams section 19, Madeline Plain. 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
  OBI75865  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen Natl Forest. Caribou Wilderness; N of Long Lake. Red Cinder quad. T30 N R7E sec 9NE of SW 2099 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
  UC1745661  Symphyotrichum frondosum Annetta M. Carter 1945-9-30 1724 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CAS-BOT-BC97918  Symphyotrichum frondosum G. D. Hanna 1958-9-20 s.n. Lassen Cold Spring - Eastern Lassen Co. Comment
  UCD18966  Symphyotrichum spathulatum Raymond D. Ratliff 1965-8-5 46 Lassen Lassen National Forest, Gooch Valley Allotment, Mosquito Flat (Gooch V. 70-1). 1889 Comment
  CHSC92950  Symphyotrichum spathulatum var. spathulatum L. P. Janeway 2005-7-31 8513 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  UCD136663  Symphyotrichum spathulatum var. yosemitanum Barbara L. Wilson; R. Brainerd, D. Lytjen, et al. 2004-8-24 11184 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. 1463 Comment
  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
  CHSC30556  Taraxia subacaulis Sori H. Shad 1970-6-26 15 Lassen Collected in Deans Meadow. 1828 Comment
  UC1542935  Taraxia subacaulis G. Schoolcraft 1987-5-19 1703 Lassen Ash Valley RNA 1554 Comment
  CHSC12455  Taraxia tanacetifolia Robert W. Severin 1969-6-27 39 Lassen 2/3 mi n E.L.B.S. in meadow. 1557 Comment
  JEPS31727  Taraxia tanacetifolia W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment
  JEPS94547  Taraxia tanacetifolia Vernon Oswald and Lowell Ahart 1997-6-24 8623 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52, 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  UC128751  Taraxia tanacetifolia Milo S. Baker Lassen near Eagle Lake Comment
  UCD18972  Taraxia tanacetifolia Jack N. Reppert 1965-7-15 37 Lassen Lassen National Forest, Champ's Flat Allotment (CF 17-41). 1682 Comment
  UCSB12577  Taraxia tanacetifolia Dearing, Hugh; Dearing, Margaret 1938-6-30 Lassen 40 miles west of Susanville Comment
  CAS-BOT-BC329047  Tetradymia canescens Elmer I. Applegate 1897-6-4 3034 Lassen Madeline Plains Comment
  CHSC64761  Tetradymia canescens Vernon H. Oswald 1995-6-7 6838 Lassen Modoc Plateau. Ridge on the n side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi e of Wendel, ne of Susanville. 1261 Comment
  JEPS17732  Tetradymia canescens Rimo Bacigalupi with G. T. Robbins 1955-7-21 5421 Lassen 16.3 mi e U. S. 395 (and 2.5 w of Calif-Nevada State line, tributary of Rush Creek (head of Smoke Creek drainage)); Rush Creek, Smoke Creek 1389 Comment
  SEINET9324830  Tetradymia canescens Unknown 1974-8-20 1925 Lassen Survey w/ state and county personnel, Hallelujah Jct, NW corner of jct of US 395 and Hwy 70. USGS quad: Chilcoot 15' Plant Systematics Lab/Herbarium CDA, California Dept. of Food & Agric Comment
  UC1136972  Tetradymia canescens George A. Fischer and Irwin H. Johnson 1933-8-26 F 279 Lassen n border Grass Valley; Lassen Forest 1676 Comment
  UC1393181  Tetradymia canescens L. Maynard Moe 1970-7-6 269 Lassen ca 6 mi n Litchfield (on Hwy 395) 1219 Comment
  UC1562341  Tetradymia canescens Vernon Oswald and Lowell Ahart 1990-7-25 4398 Lassen 2.2 mi w Hwy 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  CDA36353  Tetradymia glabrata B. Villegas 2011-8-25 Lassen Hallelujah Junction, west-northwest of intersection of Highway 395 and Route 70.