Search Results — 2000 specimen records retrieved (1607 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
  RSA518546  Abies concolor F. C. Vasek 1976-9-3 760903 -A Lassen 5 miles W of Susanville, N of State Highway 44 at a point 1/4 mile N of junction with State Highway 36. Comment
  CHSC6219  Abies magnifica P. Balch 1955-6-1 Lassen Silver Lake. 1981 Comment
  CAS-BOT-BC331636  Acer macrophyllum Louella Bass 1973-5-29 EU 51 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC334175  Acer negundo var. californicum J. T. Howell 1975-7-23 s.n. Lassen Susanville, in park 1295 Comment
  CAS-BOT-BC28647  Achillea millefolium John Thomas Howell 1976-7-19 51958 Lassen SW of Susanville on Gold Run Road 1341 Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  CHSC30558  Achillea millefolium Sori H Shad 1970-6-26 13 Lassen Dean's Meadow. 1524 Comment
  CHSC30608  Achnatherum hymenoides R. C. Abbott 1975-6-17 3 Lassen 18.5 m w of road to Lassen Co youth camp, directly e of Eagle Lake Field Station. 1554 Comment
  RSA129148  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen Near Johnstonville. 1280 Comment
  UC1024755  Achnatherum lemmonii Leo Whitney 1933-7-15 2297 Lassen 25 mi w of upper end of Eagle Lake (Hall's Flat); Lassen National Forest 1737 Comment
  UC1024870  Achnatherum lemmonii Leo Whitney 1935-5-26 3156 a Lassen 10 mi e Adin (Ash Creek); Ash Creek Comment
  CAS-BOT-BC210742  Achnatherum nelsonii John Thomas Howell 1976-7-20 52026 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  UCD50795  Achnatherum nelsonii John Thomas Howell 1976-7-20 52026 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass, Lassen County. 1432 Comment
  UCD37479  Achnatherum nevadense Beecher Crampton 1960-6-18 5729 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC216801  Achnatherum occidentale David D. Keck 1944-7-8 5451 Lassen 1.5 miles W of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC218613  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True 1973-7-31 50033 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  UC1024687  Achnatherum occidentale subsp. pubescens Leo Whitney 1933-7-15 2158 Lassen ca. 16 mi w of upper end of Eagle Lake (Harvey Mountain); Lassen National Forest Comment
  UC1024810  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-11 3271 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD51192  Achnatherum occidentale subsp. pubescens Beecher Crampton 1964-6-25 7071 Lassen 25 miles n.w. Susanville, State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  CAS-BOT-BC218007  Achnatherum thurberianum J. A. Jenkins 1937-7-15 2355 Lassen SW slope Big Valley Mountain along highway from McArthur to Bieber 1127 Comment
  SEINET235293  Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC1031349  Achnatherum thurberianum Leo Whitney 1935-6-18 3267 Lassen 13 mi w Eagle Lake; Lassen National Forest, Ashurst Mountain 1584 Comment
  UC584327  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2355 Lassen along highway from McArthur to Bieber; Big Valley Mt. 1100 Comment
  UCD51425  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD55295  Achnatherum thurberianum Ellen Dean; Gary Schoolcraft 2006-5-16 3116 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
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  SEINET5327496  Acmispon americanus var. americanus G. Schoolcraft 1995-6-27 2501 Lassen Cherry Creek 1524 Comment
  CAS-BOT-BC412872  Aconogonon davisiae John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50667 Lassen NE. of Diamond Mt. 2255 Comment
  CHSC25082  Agastache parvifolia K. R. Stern 1967-6-30 2455 Lassen West Central side of Eagle Lake. 1554 Comment
  CHSC25524  Agastache parvifolia Gary Laver 1977-8-11 Lassen Northwest side of Crater Mt., Lassen National Forest, Eagle Lake District, Mt. Diablo Meridian. 1719 Comment
  CHSC4853  Agastache parvifolia R. Carter 1967-7-13 584 Lassen On the s side of road to Eagle Lake Biology Station and Willow Creek. 1584 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
  UC1483882  Agastache parvifolia G. Schoolcraft 1979-9-3 193 Lassen on F.S. Road #16, 5-6 mi w Hwy 44 1950 Comment
  HSC86888  Agastache parvifolia R. Carter 1967-7-3 584 Lassen S side of rd. on way to Eagle Lake Biology Station and Willow Creek 1585 Comment
  UC1537574  Agastache urticifolia Gordon H. True Jr. 1936-6-27 564 Lassen n slope Hot Spring Mountain; n slope of Hot Spring Mountain 1828 Comment
  POM147886  Agastache urticifolia J. B. Feudge 1927-7-20 1754 Lassen Westwood Comment
  CAS-BOT-BC30235  Ageratina occidentalis Hans Leschke 1956-9-22 s.n. Lassen Near Sulphur Works entrance 2042 Comment
  UC468891  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3404 Lassen Chat Honey Lake Valley, Long Valley Comment
  CHSC60711  Agoseris glauca var. glauca Vernon H. Oswald; Lowell Ahart 1993-6-14 5530 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518,33N89). 1566 Comment
  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
  UC29371  Agoseris grandiflora var. grandiflora M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  JEPS118267  Agoseris heterophylla Lowell Ahart, John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS107468  Agoseris monticola Lowell Ahart, John Dittes 2005-6-1 11851 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CAS-BOT-BC13413  Agoseris retrorsa Louella Bass 1973-5-29 82 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC127583  Agropyron cristatum John Thomas Howell 1974-7-8 50468 Lassen Sierra Nevada. Susanville. 1295 Comment
  HSC100160  Agropyron cristatum J. P. Smith, & J. O. Sawyer 2011-8-14 13375 Lassen Ramhorn Campground. 1383 Comment
  UCD149818  Agropyron cristatum subsp. pectinatum Harry George 1965-6-1 s.n. Lassen Susanville Airport. Comment
  UC1024693  Agrostis exarata Leo Whitney 1933-8-2 2152 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CAS-BOT-BC139680  Agrostis gigantea Clare B. Hardham 1969-8-28 17427 Lassen Sierra Nevada. West of Janesville. Comment
  CAS-BOT-BC139293  Agrostis idahoensis George W. Gillett 1957-7-28 927 Lassen Lassen Volcanic National Park. Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake. Dry was 100 yards above trail junction. 1859 Comment
  CAS-BOT-BC138626  Agrostis stolonifera G. Schoolcraft 1999-9-8 2884 Lassen Along Susan River west of Susanville. 1341 Comment
  CHSC115828  Agrostis stolonifera Lowell Ahart; John Dittes 2015-7-14 20335 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  CAS-BOT-BC138570  Agrostis variabilis John Thomas Howell 1959-9-23 34890 Lassen North end of Juniper Lake, Lassen Park. 2057 Comment
  JEPS127168  Alisma triviale Lowell Ahart, John Dittes 2016-7-15 21221 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  POM119135  Alisma triviale Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  HSC84105  Allium acuminatum Dale McNeal 1983-6-6 2843 Lassen Beside Horse Lake Rd., 3 mi. NE of junction of Hyw. 139 Comment
  HSC47285  Allium anceps Dale McNeal 1978-5-30 2127 Lassen Beside Hwy. 395, 3 mi. S of Ravendale Comment
  SEINET222604 Image available Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Hwy 395, 3 mi. S of Ravendale. Comment
  SEINET8117272  Allium atrorubens A. Tiehm, J. Nachlinger, M. J. Williams 1988-1 11702 Lassen S side of Shaffer Mountain, 3.4 road miles N of the Wendel road on highway 395 from Susanville to Alturas, W of the highway. 1387 Comment
  NY247822  Allium bidwelliae R. M. Austin 06 1879 s.n. Lassen Pine Creek Meadows. Comment
  CHSC99735  Allium bisceptrum var. bisceptrum Lowell Ahart; John Dittes 2008-6-20 14975 Lassen Upland on the northeast side of Big Valley, about 5.3 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 8.3 miles (air) northeast of Bieber. 1287 Comment
  SEINET10472036  Allium campanulatum Mary Merello 1993-6-27 Merello 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  CAS-BOT-BC464482  Allium campanulatum A. H. Kramer 1937-1-1 s.n. Lassen Lassen National Park, near Prospect Pk. Comment
  CHSC60864  Allium lemmonii Vernon H. Oswald; Lowell Ahart 1993-6-28 5587 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valey, E of Poison Lake. 1728 Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 Comment
  UCD55299  Allium parvum Ellen Dean; Gary Schoolcraft 2006-5-16 3120 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
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  CAS-BOT-BC474073  Allium platycaule H. D. Ripley; R. C. Barneby 1943-6-14 5733 Lassen Fredonyer Pass 1676 Comment
  CAS-BOT-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
  CAS-BOT-BC476624  Allium tolmiei E. K. Balls 1950-5-18 14 .767. Lassen Along Ash Creek, above Ash Creek Public camp, off rd. from Adin to Medeline. 1584 Comment
  CDA40010  Allophyllum integrifolium T. C. Fuller 1963-7-15 10889 Lassen Road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  CHSC66280  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1996-6-24 7873 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
  RSA129212  Alopecurus aequalis H. S. Yates 1936-8-12 6082 Lassen McKenzie Meadow: Susanville 1524 Comment
  UC1594602  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  JEPS120874  Alopecurus carolinianus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18731 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC138011  Alopecurus geniculatus John Thomas Howell 1934-7-7 12464 Lassen Near Feather Lake. Comment
  CHSC108017  Alopecurus geniculatus Lowell Ahart; John Dittes 2011-6-20 17504 Lassen In the small stream, about 80 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
  UC507008  Alopecurus geniculatus George A. Fischer and Irwin H. Johnson 1933-7-11 F 190 Lassen Dry Lake Lassen Forest, Grass Valley, Dry Lake 1694 Comment
  JEPS107365  Alopecurus pratensis Lowell Ahart, John Dittes 2005-6-1 11868 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  SEINET5340064  Alyssum desertorum M. J. Williams, A. Tiehm, J. Nachlinger 1988-6-2 88- 27 -4 Lassen Hwy 395, 0.4 mile E of Susanville road after turn to Alturas. Comment
  UC1583963  Alyssum desertorum G. Schoolcraft 1990-5-15 2046 Lassen about 3 mi s of Nubieber; John's Valley area 1402 Comment
  SEINET5340073  Alyssum desertorum J. A. Young 1982-1 s.n. Lassen M. Meyer's Ranch, Adin. 1372 Comment
  CHSC68738  Alyssum minus subsp. micranthum Vernon H. Oswald; Lowell Ahart 1997-5-27 8496 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of a creek paralleling the road. 1546 Comment
  CDA42845  Alyssum minus var. micranthum L. Ahart, John Dittes 2011-6-2 17493 Lassen About 20 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. 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
  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
  RSA518417  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen 3 mi. E of Susanville, along State Road 36. 1341 Comment
  CAS-BOT-BC42889  Ambrosia acanthicarpa P. Monnet 1913-8-1 966 Lassen unspecified Comment
  POM91172  Amelanchier pallida Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC142539  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  UC773882  Amelanchier utahensis L. R. Short 1936-5-22 S- 349 Lassen Burgess Spring Experiment Range; Forest Lassen 1859 Comment
  CAS-BOT-BC142538  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  UC1182224  Amsinckia menziesii var. menziesii Francia Chisaki 1956-5-31 891 Lassen 15.4 mi n Litchfield (on Hwy #395) Comment
  CHSC25304  Amsinckia tessellata Pauleen Broyles 1977-6-1 151 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  HSC28822  Amsinckia tessellata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19277 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  SEINET12509727  Amsinckia tessellata F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  CHSC27616  Ancistrocarphus filagineus Robert A. Schlising 1978-6-8 3287 Lassen E of Eagle Lake and N of Murrers Upper Meadow. 1536 Comment
  SEINET6735001 Image available Anisocoma acaulis F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CHSC5194  Antennaria argentea A. Santos 1946-6-14 Lassen Spalding's, Eagle Lake. 1558 Comment
  POM39125  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC773954  Antennaria argentea L. R. Short and Wm. Gansberg 1936-6-10 S- 414 Lassen Burgess Spr. Exp. Range 1856 Comment
  CAS-BOT-BC63875  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1371 Comment
  CAS-BOT-BC59216  Antennaria dimorpha John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49200 Lassen Elysian Valley northwest of Janesville 1325 Comment
  JEPS118283  Antennaria dimorpha Lowell Ahart, John Dittes 2011-6-20 17508 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  HSC69050  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Schaffer Mtn. about 1/2 mile west of Hwy. 395 1463 Comment
  UC1266740  Antennaria flagellaris Gary Schoolcraft 1981-5-27 410 Lassen (on rocky gravelly site near Yellow Pine Forest) Hayden Hills 1737 Comment
  CHSC60809  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 .1 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  UC506910  Antennaria geyeri George A. Fischer and Irwin H. Johnson 1933-7-17 F- 267 Lassen Lassen National Forest 1722 Comment
  UC88216  Antennaria geyeri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CAS-BOT-BC58690  Antennaria luzuloides Ralph K. Gierisch 1968-7-11 3344 Lassen Harvey Valley 1676 Comment
  RSA32730  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen State highway 36, about 4 miles east of Westwood Comment
  UC1125572  Antennaria luzuloides A. Simontacchi 1940-6-3 725 Lassen 8.3 mi se Alcohol Jacks Cabin; Halls Flat Quad. 1706 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
  UC891618  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen about 3 mi s, on Highway #36 Westwood Comment
  UCR18725  Antennaria rosea Frank C. Vasek 1975-7-11 750711- 20 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  JEPS94555  Antennaria rosea subsp. confinis Vernon Oswald and Lowell Ahart 1997-6-24 8647 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
  JEPS95712  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  JEPS95747  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  CHSC117548  Apera interrupta Lowell Ahart; John Dittes 2016-7-13 21143 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 (air) miles east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1523746  Apera interrupta Gary Schoolcraft 1981-6-8 618 Lassen s of Beaver Creek 1249 Comment
  CHSC34335  Aphyllon purpureum Beverley J. Wise 1969-4-29 71 Lassen 3.5 mi. north of Susanville on Round Valley rd. off Hwy 139. 1341 Comment
  UC1123464  Apocynum androsaemifolium H. P. Hagge 1929-9-12 28 Lassen Logan Mt. Eagle Lake Quad., Logan Mt. Comment
  UC1137727  Apocynum androsaemifolium L. R. Short and D. Gish 1936-8-5 S- 492 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1783 Comment
  HSC30184  Arabis holboellii var. retrofracta D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19199 Lassen Harvey Valley near Cone Springs Comment
  RSA0129045  Arabis platysperma Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CAS-BOT-BC45898  Arctostaphylos nevadensis A. H. Kramer 1930-7-1 s.n Lassen Prospect Peak, Lassen National Park Comment
  CAS-BOT-BC45910  Arctostaphylos nevadensis Hans Leschke 1957-7-12 s.n Lassen Above Cold Boiling Lake 2316 Comment
  CHSC21058  Arctostaphylos nevadensis M. S. Taylor 1975-7-16 838 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. Comment
  NY223210  Arctostaphylos patula P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1508.8 Comment
  UC773875  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 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
  SEINET530728  Arenaria congesta var. lithophila Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  UC1924211  Arenaria congesta var. subcongesta Debra Valov 2004-6-9 2004272 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC8098  Arenaria congesta var. subcongesta M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC120411  Arenaria congesta var. suffrutescens T. S. Brandegee 1892-7-26 Lassen Milford Comment
  CAS-BOT-BC401655  Argemone munita subsp. munita John Thomas Howell 1955-7-19 30816 Lassen East side of Beckwourth Pass 1493 Comment
  CAS-BOT-BC400405  Aristolochia californica Jas. McMurphy 1914-4-1 s.n. Lassen Pitt Comment
  CAS-BOT-BC82113  Arnica chamissonis B. Bartholomew; B. Anderson 1988-7-22 4498 Lassen Mosquito Creek ca. 2 km SW of patterson Meadow, southern end of the Warner Mountain 2080 Comment
  JEPS35881  Arnica chamissonis Leland S. Smith 1918-7-22 1007 Lassen Blue Lake Modoc National Forest, Warner Range (w end), Blue Lake 1874 Comment
  UC91141  Arnica chamissonis unknown 1892-7-1 Lassen Susanville Comment
  UCD159572  Arnica cordifolia D. S. Park 2011-6-27 309 Lassen East of Westwood. Growing near Willard Creek. 1700 Comment
  SEINET8734516 Image available Arnica foliosa var. incana A. L. Hormay 1941-1 8 Lassen Lassen; Sec. 31, T 33N, R. 9 E, Little Valley 1679 Comment
  CAS-BOT-BC82649  Arnica latifolia John Thomas Howell; Gordon H. True 1973-8-1 50236 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 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
  JEPS103219  Arnica sororia G. Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UCD35734  Artemisia arbuscula Beecher Crampton 1960-6-20 5735 Lassen Grass Valley ca. 4 miles southeast of Black's Mtn. Exper. Station USDA. 1676 Comment
  CAS-BOT-BC85004  Artemisia arbuscula subsp. arbuscula John Thomas Howell 1934-7-6 12455 Lassen Harvey Valley Comment
  CHSC118794  Artemisia arbuscula subsp. arbuscula L. P. Janeway; B. Castro 2015-6-5 11766 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
  GMDRC6956  Artemisia arbuscula subsp. arbuscula J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31433 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
  RSA388738  Artemisia arbuscula subsp. arbuscula Jack Reveal 1984-8-15 s.n. Lassen Dry Flats in YPF along hwy 44, ca. 19 miles north of Susanville 1585 Comment
  UC1137582  Artemisia arbuscula subsp. arbuscula A. Simontacchi 1940-9-16 947 Lassen 1.3 mi ne of Ebey Lake; Lassen National Forest, Halls Flat Quadrangle 1691 Comment
  CHSC118471  Artemisia arbuscula subsp. thermopola Don Leply 2016-7-31 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile northeast of railroad crossing on Highway 44. 40N31:46.7 x 121W01:35.9. 1743 Comment
  UC1192211  Artemisia biennis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1482 Lassen I mi n of Doyle (Long Creek); Honey Lake Valley Comment
  UC762616  Artemisia biennis R. F. Hoover 1940-10-10 4681 Lassen Johnstonville Comment
  UC1507398  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 194 Lassen Painter Flat 1722 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
  CAS-BOT-BC90331  Artemisia douglasiana John Thomas Howell 1975-7-23 51390 Lassen Susanville 1295 Comment
  SD132272  Artemisia douglasiana G. Helmkamp 1990-9-23 E 15 Lassen 20 miles north of Litchfield along U. S. Hwy 395. 1435 Comment
  CAS-BOT-BC499174  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen Lassen Volcanic National Park. Snag Lake; near the Butte Lake Trail above Snag Lake 1859 Comment
  CHSC77187  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfiled and Bass Hill Roads. 1322 Comment
  CAS-BOT-BC93741  Artemisia ludoviciana subsp. incompta Clare B. Hardham 1969-8-28 17463 Lassen Sierra Nevada - slope west of Janesville Comment
  JEPS97304  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald and L. Ahart 1995-8-14 7196 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  UC1537358  Artemisia ludoviciana subsp. ludoviciana Gordon H. True 1937-7-10 783 Lassen Bull Flat Refuge 1Q, Bull Flat 1524 Comment
  SEINET263201  Artemisia nova J. Lyman 1994-4-23 4242 Lassen Along Highway 395, ca. 25 miles north of Susanville on intersecting BLM road 1433 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
  JEPS28804  Artemisia tridentata George W. Gillett 1957-9-4 1132 Lassen near Butte Lake (intersection of the Widow Lake-Snag Lake trails); Lassen Volcanic National Park 1859 Comment
  JEPS37009  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7818 Lassen near South Fork Peak 1645 Comment
  SEINET195656  Artemisia tridentata subsp. tridentata G. Thomas Robbins 1945-10-18 2157 Lassen Lassen National Forest; Harvey Valley 1676 Comment
  SEINET3360477 Image available Artemisia tridentata subsp. tridentata A. A. Beetle 1957-8-16 12891 Lassen Between Ravendale and Termo. Comment
  UC1136979  Artemisia tridentata subsp. tridentata L. R. Short 1936-9-30 S- 505 Lassen MDM, Burgess Spr. Exp. Range Lassen National Forest, MDM, Burgess Spr. Exp. Range 1752 Comment
  SEINET230066  Artemisia tridentata subsp. vaseyana Leila M. Shultz, John S. Shultz 1985-6-23 8604 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  SEINET3397741  Artemisia tridentata subsp. vaseyana Unknown 1994-1 s.n. Lassen Sage Hen Summit - US 395 Comment
  UCD137866  Asarum lemmonii Grady L. Webster 1989-5-13 7701 Lassen Butterfly Valley area. ca. 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  UC1523748  Asclepias cordifolia Gary Schoolcraft 1981-6-9 448 Lassen e McArthur (on n side of Hwy. 299) 1280 Comment
  SEINET10580351  Asclepias cordifolia Alice Eastwood, John Thomas Howell 1940-6-11 Eastwood 7995 Lassen Nubieber 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
  POM76177  Asclepias fascicularis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA252999  Aster alpigenus A. A. Heller 1937-9-1 15343 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  POM39868  Aster campestris Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC66718  Aster elatus Vernon H. Oswald; Lowell Ahart 1996-8-1 8120 B Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  RSA503251  Aster integrifolius Bruce Bartholomew, B. Anderson 1988-7-22 4502 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  RSA504836  Aster modestus Bruce Bartholomew, B. Anderson 1988-7-22 4499 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
Read comments
Jan 31 2013
  UC1533142  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen about 3 mi nw Termo 1615 Comment
  CHSC116920  Astragalus andersonii J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CAS-BOT-BC178762  Astragalus canadensis var. brevidens John Thomas Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC178766  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. east of Madeline Plains. 1712 Comment
  UC82577  Astragalus canadensis var. brevidens unknown 1892-6-20 Lassen Milford Comment
  HSC69613  Astragalus curvicarpus Gary Schoolcraft 1979-6-19 77 Lassen Just N of West Painter Flat Rd. intersection. 1720 Comment
  SEINET948261  Astragalus curvicarpus Ira. L. Wiggins, Dorothy B. Wiggins 1961-1 16331 Lassen Gravelly slopes at margin of grain field 13.5 mi. E of Susanville, sec 36 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-BC182960  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi. s of Constantia 1402 Comment
  CHSC5279  Astragalus filipes L. Harman 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  CHSC63395  Astragalus gibbsii V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6355 Lassen Ash Valley between Adin and Madeline, ca. 0.5 mi along the road leading SE from the right-angle turn on Lassen 527 near the gravel pit. 1554 Comment
  NY674271  Astragalus gibbsii P. A. Munz 1947-5-20 11889 Lassen Milford 1265 Comment
  SEINET948354  Astragalus gibbsii Philip A. Munz 1947-1 11889 Lassen Milford 1265 Comment
  CAS-BOT-BC186859  Astragalus gibbsii John Thomas Howell 1974-7-10 50515 Lassen Janesville 1295 Comment
  SEINET10838317  Astragalus gibbsii Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2589 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and california hwy 36 to Susanville, near johnstonville. 1311 Comment
  SEINET10970063  Astragalus gibbsii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 881 Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  RSA110067  Astragalus gilensis H. D. Ripley, R. C. Barneby 1944-5-29 5951 Lassen Container 1372 Comment
  JEPS109851  Astragalus inversus Dean W. Taylor 2006-6-29 19560 Lassen Halls Flat; along County Road 111 3.6 miles N of Poison Station (siding)(ca. 12 air miles NE of Old Station) 1706 Comment
  RSA111019  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 5740 Lassen 3 miles west of Susanville. Comment
  UCD18950  Astragalus inversus Raymond D. Ratliff 1965-8-5 42 Lassen Lassen National Forest, Champ's Flat Allot. (CF 21-8). 1743 Comment
  NY675142  Astragalus iodanthus var. diaphanoides A. Tiehm 1980-5-29 5755 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  SEINET5325323  Astragalus iodanthus var. diaphanoides M. J. Williams, Gary Schoolcraft; Arnold Tiehm 1986-5-12 86- 23 -2 Lassen Smoke Creek Rd, E of Hwy 395, 1 mi W of Nevada-Calif. Boundary. 1341 Comment
  CAS-BOT-BC187156  Astragalus lentiginosus var. chartaceus John Thomas Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  SEINET5325521  Astragalus lentiginosus var. floribundus A. Tiehm 1980-1 5751 Lassen North end of Honey Lake Valley, 1 mile orth of Wendel. 1231 Comment
  UC13403  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  UC1609460  Astragalus lentiginosus var. lentiginosus Vernon H. Oswald and Lowell Ahart 1993-7-8 5663 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi n Hwy 44 (se edge Poison Lake); se edge Poison Lake 1709 Comment
  CHSC67215  Astragalus lentiginosus var. platyphyllidius James D. Jokerst 1991-5-28 3291 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, ca. 400 ft E of the highway on steep slopes above the road, S of a small canyon mouth. 1554 Comment
  RSA109610  Astragalus lentiginosus var. platyphyllidius H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen Hidden Valley E of Susanville 1311 Comment
  POM280735  Astragalus lentiginosus var. salinus Alice Eastwood, John T. Howell 1940-6-16 8335 Lassen Near Susanville. Comment
  RSA0059601  Astragalus lentiginosus var. salinus Lowell Ahart, John Dittes 2011-6-20 17510 Lassen Near edge of the Ash Valley Road, 3,210 feet south of the Ash Creek Campground, about 6.5 (air) southeast of Adin. 1511 Comment
  CDA19719  Astragalus malacus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  CHSC71083  Astragalus malacus Vernon H. Oswald; Lowell Ahart 1998-5-22 9104 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  UC13459  Astragalus obscurus M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC192842  Astragalus pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC192846  Astragalus pulsiferae Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  JEPS54791  Astragalus pulsiferae J. B. Davy June 1897 Lassen Chat Long Valley, Chat Comment
  UC13449  Astragalus pulsiferae J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Long Valley, Honey Lake Valley, Chat (Long Valley, Honey Lake Valley) Comment
  CAS-BOT-BC192840  Astragalus pulsiferae H. D. Ripley; R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass, S. Lassen Co. Comment
  POM24228  Astragalus pulsiferae var. pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC23489  Astragalus purshii Waynes O. Baum 1971-7-16 71 -70 Lassen W. slope of Gallatin Peak. 1981 Comment
  CHSC5282  Astragalus purshii V. Holt 1944-7-9 Lassen Dow Butte. 2042 Comment
  JEPS54815  Astragalus purshii L. S. Smith 1916-5-22 Lassen Honey Lake Comment
  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
  POM45166  Astragalus purshii var. tinctus T. S. Brandegee 1892-6-23 s.n. Lassen Honey Lake Comment
  UC1137765  Astragalus purshii var. tinctus August L. Hormay 1934-5-9 Lassen Lassen National Forest , Black's Mt Headquarters (Black's Mt. Headquarters) 1706 Comment
  RSA38443  Astragalus purshii var. tinctus P. A. Munz 1947-5-19 12269 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  UC1299224  Astragalus purshii var. tinctus Freed W. Hoffman 1946-6-8 913 Lassen Highway 395 Dry Creek (Dry Creek) Comment
  CHSC26427  Astragalus whitneyi Gary McGrath 1976-6-15 12 Lassen Dean's Ridge, southwest facing slope, 25 km nw of Susanville. 1930 Comment
  UC82594  Astragalus whitneyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CHSC67217  Astragalus whitneyi var. confusus James D. Jokerst 1991-5-29 3303 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
  JEPS108557  Astragalus whitneyi var. siskiyouensis L. P. Janeway 2005-7-4 8469 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41 1752 Comment
  CHSC72311  Astragalus whitneyi var. whitneyi L. P. Janeway; Glenn Clifton 1998-7-8 5722 Lassen Ridgetop saddle about 2.4 mi northwest of Red Rock; along Road 213, 0.1 mi east of the junction of Roads 28N08, 29N10, 213, and 28N55. 1988 Comment
  CAS-BOT-BC68710  Athyrium filix-femina var. californicum Clare B. Hardham 1971-8-22 18405 Lassen Diamond Mountain 1981 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
  RSA38479  Athysanus pusillus P. A. Munz 1947-5-18 11863 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  UC295904  Atriplex argentea H. M. Hall 1925-8-31 12215 Lassen Amedee Comment
  CHSC109990  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 B Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  JEPS120466  Atriplex canescens var. canescens L. P. Janeway, B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. Comment
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC172657  Atriplex gardneri var. falcata Gary Schoolcraft 1983-6-20 1012 Lassen Mud Flat 1341 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
  RSA88586  Atriplex truncata J. T. Howell 1951-8-20 28226 Lassen Honey Lake Valley near Herlong 1280 Comment
  NY652204  Atriplex truncata G. Schoolcraft 1998-7-21 2334 Lassen Near Phone Spring south of Rush Creek 1402.1 Comment
  UC1924265  Avena fatua Debra Valov 2004-6-9 2004265 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD129522  Balsamorhiza hirsuta G. Schoolcraft 2000-4-26 2891 Lassen Susanville, 1.8 miles west of Hwy 395 on Shaffer Mountain Road. 1554 Comment
  CAS-BOT-BC106486  Balsamorhiza hookeri Elmer I. Applegate 1934-5-4 8919 Lassen Plains at south end of Secret Valley Comment
  CHSC7646  Balsamorhiza hookeri Beverly J. Wise 1969-4-17 14 Lassen 1 mi north on Hwy 139. 1341 Comment
  SEINET7239770 Image available Balsamorhiza hookeri var. hirsuta G. Schoolcraft 1998-7-8 2750 Lassen South of Round Corral Reservoir 1890 Comment
  SEINET10617243  Balsamorhiza sagittata Paul Gallian, David B. Dunn 1971-6-2 Gallian 500 Lassen Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia. 1646 Comment
  JEPS114368  Barbarea orthoceras Lowell Ahart, John Dittes 2008-6-20 14949 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET10970556  Barbarea orthoceras Katherine L. Morris 1973-5-25 Morris 244 Lassen Collected 13.7 mi nw of the jct of hwy 36 and 44 on hwy 44, in an area of yellow pine, fir, and ribes. Comment
  CDA36736  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. Comment
  SEINET3872219  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake.; 0 1559 Comment
  CDA31539  Beckmannia syzigachne T. C. Fuller 1963-6-1 10625 a Lassen 3.2 mi south of Pittville on east side of road to Susanville. 0 Comment
  CAS-BOT-BC76025  Berberis repens Parkison 1916-6-17 13 Lassen Lassen Forest. North slope Crater Mountain. 1706 Comment
  HSC95198  Betula glandulosa Gordon Leppig, J. Cromwell 1997-7-26 599 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC1342  Bistorta bistortoides L. Harmon 1946-6-23 Lassen Squaw Valley. Comment
  CHSC4759  Bistorta bistortoides R. Carter 1967-7-14 613 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir in grassy open area. Comment
  CAS-BOT-BC127971  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CHSC48131  Blepharipappus scaber Vernon H. Oswald 1986-6-15 2112 Lassen Hwy 36, 15.0 mi E of Plumas-Lassen Co. line, 3.5 mi E of Fredonyer Pass. 1508 Comment
  JEPS114752  Blepharipappus scaber Lowell Ahart, John Dittes 2008-6-19 14876 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS22625  Blepharipappus scaber R. F. Hoover 1940-9-28 4633 Lassen Susanville Comment
  UC87371  Blepharipappus scaber T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  SEINET10757900  Blepharipappus scaber Billy Joe Cox 1971-6-2 Cox 2984 Lassen Appox. 12 mi. S of Adin on CA. Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  SEINET10846329  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2600 Lassen Hallelujah Jct. intersection of U.S. Hwy. 395 & CA Hwy. 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  SEINET7379326 Image available Blepharipappus scaber J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  SFV7758  Blepharipappus scaber T. Gordon, K. Kimbrough 1975-8-15 1210 Lassen 16 miles south of Adin. 1402 Comment
  UC1609118  Boechera Vernon H. Oswald and Lowell Ahart 1993-6-14 5546 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd (Lassen A1) at Sandy Beach on w shore of Eagle Lake, n side of rd); Eagle Lake 1566 Comment
  CAS-BOT-BC14090  Boechera pauciflora John Thomas Howell; Gordon H. True 1973-8-1 50161 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road south of Susanville. 1584 Comment
  CHSC66379  Boechera pinetorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7793 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  CAS-BOT-BC14294  Boechera platysperma John Thomas Howell; Gordon H. True 1973-7-31 50040 Lassen Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak. 1737 Comment
  JEPS114362  Boechera puberula Lowell Ahart, John Dittes 2008-6-19 14883 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CAS-BOT-BC25508  Boechera retrofracta Reed Clark Rollins; Kathryn W. Rollins 1981-5-31 81176 Lassen Just north of Eagle Lake. Comment
  CAS-BOT-BC25510  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 miles west of Madeline. 1584 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
  CHSC11772  Boechera retrofracta Wayne O. Baum 1971-6-28 71 -10 Lassen East slope of Gallatin Peak. 1950 Comment
  JEPS95056  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1997-5-27 8495 Lassen North of Susanville on Forest Route 38N04 (between Highway 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Highway 139. 1546 Comment
  RSA0090999  Boechera retrofracta Dean Wm. Taylor 2009-5-21 20602 Lassen Susanville; Susanville Peak, easterly flank along logging road trending northward from Susanville Indian Rancheria. 1600 Comment
  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
  UC1542746  Boechera sparsiflora Barbara Ertter with Gary Schoolcraft 1987-6-16 7180 Lassen ca 1 mi w Hot Springs VABM (ne side of Honey Lake); Skeedaddle Mountains 1828 Comment
  JEPS111475  Boechera sparsiflora B. A. Roy, J. W. Kirchner 1996-5-11 Lassen At intersection of Yellow Pine and Pine Needle. Drives up Jaynesville Grade, near Jaynesville (off highway 395 about 1 mile). Comment
  RSA121169  Boisduvalia glabella G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 197 Lassen Grass Valley (Dry Lake), Lassen [National] Forest 1695 Comment
  RSA166295  Boisduvalia glabella Peter H. Raven, Otto T. Solbrig 1958-6-17 13289 Lassen U. S. Highway 395, 1.8 miles south of Ravendale. Comment
  RSA41170  Boisduvalia glabella Robert F. Hoover 1940-9-21 4602 Lassen 4 miles west of Susanville Comment
  SD8418  Boykinia major Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  UC1134039  Brodiaea coronaria subsp. coronaria A. Simontacchi 1940-6-15 871 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat 1767 Comment
  UC60846  Bromus M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mountains Comment
  GMDRC7732  Bromus briziformis J. M. Andre, G. Clifton 1993-6-1 33409 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  OBI75882  Bromus briziformis Anthony Baniaga 2011-6-30 405 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1470 Comment
  UCD57488  Bromus briziformis Lauramay T. Dempster 1961-6-17 1675 Lassen About 8 miles north of Karlo Road junction with Hwy. 395. 1584 Comment
  UCR67017  Bromus briziformis George K. Helmkamp 1990-9-23 D- 11 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CAS-BOT-BC149583  Bromus carinatus var. carinatus Parkison 1916-6-21 42 Lassen Near Patterson. 1706 Comment
  UC1024795  Bromus carinatus var. carinatus Leo Whitney 1935-6-10 3212 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10 Lassen National Forest; , Fruit Grower's Supply Company Comment
  UC1136817  Bromus carinatus var. carinatus George A. Fischer, Irwin H. Johnson 1933-7-12 F 231 Lassen Lassen National Forest, Patterson Flat Patterson Flat; Lassen National Forest, Patterson Flat 1737 Comment
  CHSC23516  Bromus carinatus var. marginatus Wayne O. Baum 1971-7-5 71 -13 Lassen E. slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC155324  Bromus inermis John Thomas Howell 1973-7-10 49766 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  CAS-BOT-BC155325  Bromus inermis John Thomas Howell 1975-7-23 51410 Lassen Sierra Nevada. Along Highway 395 between Johnstonville and Jonesville. 1280 Comment
  JEPS124392  Bromus japonicus Lowell Ahart, John Dittes 2015-7-13 20310 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC53747  Bromus secalinus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CAS-BOT-BC161418  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49520 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC161419  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49199 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  SEINET10515052  Bromus tectorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 522 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC185530  Bromus vulgaris John Thomas Howell; Gordon H. True 1973-7-31 50056 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CAS-BOT-BC438314  Calandrinia ciliata T. L. Secrest 1961-6-8 s.n. Lassen Edge of McCoy Flat Reservoir, ca. 14 mi. n. of Westwood Comment
  HSC36104  Callitriche fassettii Ken Mahouski 1973-4-29 Lassen Along Hat Creek at Hat #2 power house forebay, near Cassel. Comment
  JEPS120868  Callitriche heterophylla Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18750 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
  UCD169625  Callitriche palustris R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1615 Comment
  CHSC66239  Callitriche verna Vernon H. Oswald; Lowell Ahart 1996-6-24 7870 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 or along Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS88592  Callitriche verna Vernon H. Oswald and Lowell Ahart 1996-6-24 7870 Lassen 2.5 mi s Eagle Lake (and 0.5 mi e of Eagle Lake Rd (A1), along Papoose Creek where it leaves the n end of the meadow, Papoose Meadows); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  UC1101519  Callitriche verna Herbert L. Mason and Verne Grant 1947-7-9 13294 Lassen 5 mi e Bieber Comment
  RSA0011566  Callitriche verna R. F. Thorne, Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  CHSC67072  Calochortus leichtlinii Willis Ball 1969-6-20 15 Lassen Found approx. 1 mile S. E. of E. L. B. S. about 50 ft. off the dirt road to the station. 1584 Comment
  UC1537209  Calochortus leichtlinii Gordon H. True Jr. 1936-6-25 533 Lassen n side Hog Flat Reservoir 1524 Comment
  CAS-BOT-BC487967  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen In the valley east of Fredonyer Pass, Comment
  CHSC27637  Calochortus macrocarpus J. D. Prouty 1978-7-26 27 Lassen Gorilla's Roost to Stone's Ranch Rd., SE of Eagle L. 1584 Comment
  CHSC6271  Calochortus macrocarpus A. Santos 1946-7-5 Lassen East side of Eagle Lake. 1615 Comment
  UC1542941  Calyptridium umbellatum G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley National Recreational Area 1554 Comment
  UC420619  Calyptridium umbellatum Franklin P. Nutting Lassen Pine Creek Comment
  UC699726  Calyptridium umbellatum Farris Farris 1936-6-15 Lassen Eagle Lake road 1676 Comment
  UC1123631  Calystegia occidentalis subsp. occidentalis A. Simontacchi 1940-6-30 901 Lassen 2.6 mi s Ladder Butte; Halls Flat, Lassen National Forest, Ladder Butte Comment
  SEINET10533674  Camassia leichtlinii subsp. suksdorfii Katherine L. Morris 1973-5-25 Morris 251 Lassen 27.7 mils nw of the jct. Of hwy. 36 And 44 on hwy. 44, At robber's spring, in An open meadow on one side of the hyw wirh yellow pine, white fir and open on The other side Comment
  CAS-BOT-BC497000  Camassia quamash Luella Bass 1980-6-14 EV 2 - 80 Lassen Elysian Valley Comment
  POM253049  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles south of Westwood 1524 Comment
  CHSC20416  Camassia quamash subsp. quamash K. R. Stern 1967-6-25 2431 Lassen On road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  CAS-BOT-BC36987  Camelina microcarpa John Thomas Howell 1974-7-8 50504 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC4969  Camissonia R. Carter 1967-6-23 540 Lassen Along rd to Murrer's Meadow. 1584 Comment
  HSC69078  Camissonia boothii subsp. alyssoides Gary Schoolcraft 1980-5-16 234 Lassen N of Kiln on Wendel Hwy. 1280 Comment
  NY850975  Camissonia boothii subsp. alyssoides Mrs. C. C. Bruce 06 1898 2139 Lassen Shumway Comment
  SEINET3282785 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  RSA136892  Camissonia claviformis subsp. cruciformis Peter H. Raven, Otto T. Solbrig 1958-6-17 s.n. Lassen Along Hwy 395, 19.0 miles south of Ravendale Comment
  UC69560  Camissonia contorta J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Honey Lake Valley, Long Valley Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  CHSC93689  Camissonia parvula Lowell Ahart; John Dittes 2005-6-1 11852 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  CAS-BOT-BC160863  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-7-8 12505 Lassen Spalding's, Eagle Lake Comment
  RSA512846  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell, Gordon H. True 1973-8-1 50209 Lassen Sierra Nevada: Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2165 Comment
  CHSC116087  Capsella bursa-pastoris Lowell Ahart; John Dittes 2015-7-13 20308 Lassen About 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC37243  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49213 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC68853  Cardamine breweri Vernon Oswald; Lowell Ahart 1997-6-24 8618 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. On the edge of a streamlet entering the impoundment. 2036 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
  CDA3650  Cardaria draba G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2801 Lassen 7.2 miles (11.6 km) north of Termo, 7.1 miles south of Madeline, east side of Madeline Plain. Comment
  CAS-BOT-BC18287  Carex John Thomas Howell; Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road, south of Susanville. 1584 Comment
  RSA702447  Carex abrupta L. P. Janeway 2004-6-26 8170 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  CAS-BOT-BC17909  Carex angustata Leo Whitney 1934-7-31 1972 Lassen Bridge Creek Camp. 1737 Comment
  CHSC76790  Carex angustata L. P. Janeway 1999-9-5 6574 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 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
  UC50815  Carex athrostachya J. Burtt Davy Jun 17-24 1897 3298 Lassen Honey Lake Valley, slough near Dr. Witt's Comment
  UC1108041  Carex brainerdii E. B. Copeland 1932-8-15 Lassen below Raker Peak (woods by Lost Creek); Mount Lassen, Lost Creek 1889 Comment
  CHSC76791  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  RSA122792  Carex douglasii G. A. Fischer, I. H. Johnson 1933-7-12 F- 234 Lassen Patterson Flat. 1738 Comment
  CAS-BOT-BC19780  Carex douglasii H. D. Ripley; R. C. Barneby 1943-6-14 5145 Lassen Hidden Valley, E of Susanville. 1584 Comment
  CDA33049  Carex douglasii T. C. Fuller 1963-7-15 10890 Lassen South side of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  CHSC111069  Carex douglasii Barbara L. Wilson 2011-8-7 16803 Lassen Where route A21 crosses the railroad tracks north of Westwood; UTM 10, 669989 east, 4469294 north, +/- 23. 1606 Comment
  HSC95229  Carex echinata subsp. echinata Gordon Leppig, Tony LaBanca 1997-6-28 517 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC75502  Carex echinata var. ormantha Leo Whitney 1934-8-2 1967 Lassen Bridge Creek Camp. 1737 Comment
  HSC48360  Carex filifolia var. erostrata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19171 Lassen Open pasture in Harvey Valley near Cone Springs Comment
  UCD37482  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Lassen National Forest, 6 miles north of Bogard Ranger Station, Harvey Valley. 1676 Comment
  CAS-BOT-BC22274  Carex hassei Ralph K. Gierisch 1968-7-12 3360 Lassen Hwy. 36 at Goodrich Creek. 1554 Comment
  CAS-BOT-BC20938  Carex heteroneura John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50698 Lassen South and southeast of Diamond Mountain. 2286 Comment
  JEPS28382  Carex heteroneura George W. Gillett 1957-7-28 937 Lassen along s margin, Widow Lake Lassen Volcanic National Park, Widow Lake 2072 Comment
  UC2031875  Carex hoodii Nick Otting and Bruce Newhouse 2003-7-15 705 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 air miles south-southwest of Susanville. Comment
  SEINET7561698 Image available Carex hoodii George W. Gillet 1957-7-29 946 Lassen Lassen Volcanic National Park, along trail between Snag Lake and Butte Lake. 1859 Comment
  HSC48181  Carex integra D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19239 Lassen 2 mi. N of Westwood 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
  UC1609199  Carex livida Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen e Silver Lake (just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
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May 19 2014
  CHSC98668  Carex nebrascensis Thomas W. Nelson; Jane P. Nelson 1985-8-10 8019 Lassen In lake side bog along north side of Silver Lake. 1828 Comment
  SEINET7568737 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7913 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  SEINET7484007 Image available Carex pachycarpa W. W. Eggleston 1927-1 21485 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  CAS-BOT-BC119041  Carex pellita John Thomas Howell 1976-7-19 s.n. Lassen On Gold Run Creek SW of Susanville 1386 Comment
  UC1133448  Carex petasata Robert W. Gardner 1939-6-28 G- 32 Lassen Burgess Spring Experimental Range, Halls Flat Quadrangle Burgess Spring Experimental Range Comment
  UC1755280  Carex petasata Dean W. Taylor 2007-6-14 20126 Lassen stream channel draining Lower Gooch Valley into Gordon Valley [dry on this date in a very dry year, stream channel with fluvial geomorphology indicating flow in spring on average] 1828 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
  CHSC91377  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11859 Lassen On the west side of a 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
  JEPS107839  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11859 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  SEINET10585735  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 Ahart 17477 Lassen T38N, R10E, center of north 1/2 Section 22. About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1521 Comment
  UC1542937  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen near Stone Ranch; Eagle Lake 1554 Comment
  UC2031884  Carex praegracilis Nick Otting 2003-7-16 689 Lassen Modoc Plateau, Smoke Creek, 13.5 air miles east-southeast of Ravendale. Comment
  CHSC54424  Carex raynoldsii Vernon H. Oswald 1991-6-25 4695 Lassen Lassen Volcanic National Park. Butte Lake-Snag Lake Trail, just south of its junction with Butte Lake-Widow Lake Trail, in the northeast corner of the park. 1842 Comment
  CAS-BOT-BC118027  Carex rossii John Thomas Howell; Gordon H. True 1973-8-1 s.n. Lassen Headwater of Baxter Creek, Diamond Mts. 2164 Comment
  HSC48218  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19222 Lassen 2 mi. N of Westwood Comment
  UC1108040  Carex scopulorum var. bracteosa E. B. Copeland 1932-8-15 Lassen King's Creek Meadow, at road crossing Mount Lassen 2225 Comment
  CDA33169  Carex simulata Gordon Leppig, J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch Comment
  HSC95225  Carex simulata Gordon Leppig 1998-8-17 1044 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS96099  Carex simulata Vernon H. Oswald and Lowell Ahart 1996-6-17 7815 Lassen Bizz Johnson Trail at 6.0 mi post e Devils Corral Trailhead (<trailhead> located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  CHSC114421  Carex simulata Allison Sanger 2012-7-31 Lassen Cooper Swamp, east of Silver Lake across Road 32N10, approximately 36 air miles west-northwest of Susanville. 1956 Comment
  CAS-BOT-BC116619  Carex subfusca George Wilson Gillett 1957-7-26 913 Lassen East Shore of Butte Lake, along water line. 1844 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-BC116618  Carex subfusca B. Clear 1938-7-14 s.n. Lassen Lily Ponds, Manzanita Lake, Lassen Park. 1781 Comment
  RSA201855  Carex subfusca Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  SEINET7579515 Image available Carex utriculata George W. Gillett 1957-7-22 885 Lassen Lassen Volcanic National Park, Snag Lake, near campsite at south end of lake. 1850 Comment
  HSC95273  Carex vesicaria Gordon Leppig 1998-7-12 942 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA275376  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  CAS-BOT-BC248944  Castilleja Mike Vasey 1990-6-30 9055 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CHSC116919  Castilleja angustifolia J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 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
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  CHSC67068  Castilleja applegatei Willis Ball 1969-6-20 20 Lassen Found approx. 2 mls. down from Dean's Meadow going towards 5 pts. 1828 Comment
  CAS-BOT-BC249613  Castilleja applegatei subsp. pinetorum G. Schoolcraft 1987-5-6 1699 Lassen North end of Eagle Lake near Stone Ranch 1554 Comment
  CAS-BOT-BC249622  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-9 12527 Lassen Harvey Valley 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
  JEPS117583  Castilleja applegatei subsp. pinetorum Lowell Ahart, John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  JEPS81866  Castilleja applegatei subsp. pinetorum L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5842 Lassen About 2.5 miles west of Paynes Creek, along highway 36 to Mt. Lassen (6.5 miles northeast of Dales) Comment
  SEINET10818435  Castilleja applegatei subsp. pinetorum Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 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
  UC1012183  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Susanville; Route 36 1371 Comment
  UC1012479  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25754 Lassen 5 mi n Madeline (Route 395) 1676 Comment
  UC1063040  Castilleja applegatei subsp. pinetorum H. P. Hagge 1929-9-12 25 Lassen Logan Mtn.; Eagle Lake Quad. 1828 Comment
  UC1063043  Castilleja applegatei subsp. pinetorum A. Simontacchi 1940-5-16 728 Lassen 2.3 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1752 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
  CAS-BOT-BC249620  Castilleja applegatei subsp. pinetorum F. Farris 1935-5-15 s.n. Lassen Ramsey ranch near Susanville Comment
  UC1609116  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1993-6-14 5525 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd (Lassen A1), at Sandy Beach, on the w shore of Eagle Lake, on the upper beach between the road and the lake); Eagle Lake 1566 Comment
  RSA428370B  Castilleja arachnoidea Christopher Davidson 1974-7-25 2500 Lassen Lassen Volcanic nat. Park, at Juniper Lake. 2134 Comment
  JEPS62838  Castilleja campestris subsp. campestris John Weiler 1970-7-6 70188 Lassen 3.6 mi s Madeline (along Highway 395) 1371 Comment
  CHSC92738  Castilleja lacera L. P. Janeway 2005-7-3 8454 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  UC1924561  Castilleja lacera Debra Valov 2006-5-29 2006033 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 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
  HSC20530  Castilleja linariifolia M. T. Milligan 1964-8-6 208 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS62836  Castilleja linariifolia John Weiler 1970-7-8 70240 Lassen n shore Eagle Lake Comment
  CAS-BOT-BC244887  Castilleja miniata Alice Eastwood 1912-8-22 1784 Lassen trail from Morgans Springs to Sulphur Works. Lassen Butte Region. Comment
  CAS-BOT-BC240998  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen Route 395, 5 miles south of Ravendale 1645 Comment
  CAS-BOT-BC240999  Castilleja pilosa Alice Eastwood 1940-6-15 8318 Lassen Said Valley Comment
  CAS-BOT-BC241001  Castilleja pilosa B. Bartholomew; B. Anderson 1988-6-25 4369 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  JEPS80677  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5529 Lassen about 0.5 mi e Nubieber 1249 Comment
  RSA0037005  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-19 14879 Lassen East bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  SBBG7071  Castilleja pilosa H. and M. Dearing 1939-6-6 3566 Lassen Pitt River, near Bieber Comment
  RSA59750  Castilleja psittacina E. K. Balls 1950-5-19 14778 Lassen 17.5 mi. W. of Madeline on rd. from Adin. 1677 Comment
  CHSC108002  Castilleja tenuis Lowell Ahart; John Dittes 2011-6-20 17499 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS121270  Castilleja tenuis Lowell Ahart 2013-7-22 18840 Lassen W margin of duck field, about 30 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SJSU11528  Castilleja tenuis J. W. Tilden 1960-6-27 1514 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CAS-BOT-BC39554  Caulanthus major G. Schoolcraft 1981-7-7 591 Lassen Northwest of Susanville Peak. 2011 Comment
  NY608460  Caulanthus major var. nevadensis N. H. Holmgren 1978-6-11 8923 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  CAS-BOT-BC52054  Ceanothus prostratus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16318 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  HSC42297  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen 4.5 mi W of Bieber along Hwy. 299 Comment
  UC1071527  Ceanothus prostratus K. Bradshaw 1939-5-27 233 Lassen Black Mt. Experimental Forest - Plot 39-1, s end Lassen National Forest, Halls Flat Quad. Comment
  UC506913  Ceanothus prostratus George A. Fischer, Irwin H. Johnson 1933-2-14 F- 263 Lassen Lassen National Forest 1767 Comment
  UC727092  Ceanothus prostratus A. A. Heller 1941-6-26 16230 Lassen on roadside banks on the ridge w Nieubieber; w of Nieubierber Comment
  SEINET3814663 Image available Ceanothus prostratus R. A. Nelson 1963-9-14 7821 Lassen Near Westwood on way to Lassen Volcanic National Park from Susanville. Comment
  UC1071532  Ceanothus velutinus A. Simontacchi 1940-6-15 866 Lassen 1.0 mi ssw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  UCSB62941  Ceanothus velutinus Sarr, Dan 1995-7-29 Lassen N-side of Eagle Pass, 1 mi. below the summit 1900 Comment
  RSA747546  Ceanothus velutinus var. velutinus K. M. Meyer, A. Townesmith 2007-7-23 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC184969  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  CDA37979  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen Secret Valley, Highway 395, 3.3 miles north of road to Karlo. 0 Comment
  CDA7223  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  CHSC114170  Centaurea solstitialis R. E. Brainerd; N. Otting 2004-8-26 538 Lassen Highway 395 ca 30 miles northeast of Susanville. 1371 Comment
  CAS-BOT-BC281208  Centaurea stoebe subsp. micranthos Lee E. Wheeler 1962-8-15 s.n. Lassen Doyle area Comment
  RSA186838  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville Comment
  RSA97606  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley Comment
  SEINET13331053 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1959-10-15 s.n. Lassen Roadside, E. of Pitt River on road to Lookout, about 2 mi. N. of Bieber Comment
  UC1561829  Centaurium exaltatum Barbara Ertter 1987-7-24 7305 Lassen ca 0.75 mi ene Beckwourth Pass (at the end of old crumbling paved road) 1524 Comment
  JEPS107820  Centaurium muehlenbergii Lowell Ahart, John Dittes 2005-6-2 11977 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
  RSA715992  Centaurium muehlenbergii L. Ahart, John Dittes 2005-6-2 11977 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  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
  HSC26513  Cercocarpus ledifolius J. P. Smith, J. O. Sawyer 1972-5-6 5241 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  JEPS127358  Cercocarpus ledifolius var. intermontanus Alia Johnson, Jillian Sarazen 2016-8-24 CA 350 -79 Lassen 139 N. Right turn on load leading to Fredonyer Mountain. 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
  CHSC23518  Chaenactis douglasii var. douglasii Wayne O. Baum 1971-7-6 71 -50 Lassen Slope of Gallatin Peak. 2011 Comment
  CHSC5202  Chaenactis douglasii var. douglasii R. Gein 1946-6-24 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  UC30985  Chaenactis douglasii var. douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3410 Lassen Amedee Honey Lake Valley Comment
  UCR7839  Chaenactis douglasii var. douglasii Marilyn Malin 1968-6-19 250 Lassen Eagle Lake Biological Station[Chico State Biological Station], 50 ft. NE of the A-Frame cabin 59 Comment
  UCD19670  Chaenactis douglasii var. douglasii Donald W. Kyhos 1967-9-1 67 -88 Lassen Mt. Lassen National Park. In the devastated area within 1/2 mile north of Hat Lake. Comment
  NY758642  Chamaebatiaria millefolium G. Schoolcraft 1981-7-29 554 Lassen On south slope of McDonald Peak 2134 Comment
  UC526157  Chamaebatiaria millefolium John Thomas Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  JEPS5990  Chamaesaracha nana Frances D. Payne 1929-7-12 77 Lassen near Lost Lake (camp 1, se extremity of Warner Mountains); Warner Mountains 2286 Comment
  HSC63927  Chamaesaracha nana Teresa Prendusi 1980-5-30 1109 Lassen Mapes Spring, 11 mi. W of 395 and 19 mi. S Ravendale, near spring outflow 1585 Comment
  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
  CHSC99743  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2008-6-20 14913 Lassen On the levee road and in vernal pools, 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
  RSA0105580  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart, John Dittes 2013-7-22 18857 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS128409  Chamerion angustifolium subsp. circumvagum Catherine Bauer with Ellen Bauer Benson 2017-8-16 17 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UCR265181  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 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
  CDA3039  Chenopodium botrys T. C. Fuller 1964-10-7 12693 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber. 0 Comment
  CHSC6235  Chimaphila menziesii P. Balch 1955-7-22 Lassen Eagle Lake. Between Eagle Lake and Pittville road. 1676 Comment
  CHSC13793  Chrysolepis sempervirens Robert Smallwood 1970-7-9 154 Lassen Gallatin Peak, 1/2 mile west of Dean's Meadow. 1950 Comment
  UCSB62935  Chrysolepis sempervirens Sarr, Dan 1995-7-31 Lassen within crater of Crater Mountain 670 Comment
  CAS-BOT-BC140657  Chrysothamnus humilis Clare B. Hardham 1971-8-22 18391 Lassen Diamond Mountain 2346 Comment
  RSA3038  Chrysothamnus parryi subsp. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  UCD130269  Chrysothamnus viscidiflorus Beecher Crampton 1954-5-11 1883 Lassen Beckwourth Pass. 1588 Comment
  CAS-BOT-BC100758  Chrysothamnus viscidiflorus subsp. puberulus P. Monnet 1913-7-1 792 Lassen Hot Spring Peak 1524 Comment
  CHSC77190  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  CHSC42146  Chrysothamnus viscidiflorus subsp. viscidiflorus C. E. Laver 1985-8-14 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. Along roadsides. 2194 Comment
  CHSC5034  Cichorium intybus L. B. Barlow 1967-7-6 108 Lassen 2 mi. west Murrer's Ranch turn off, 14.9 mi. north of Susanville, Calif., Highway 139. 1463 Comment
  POM352119  Cichorium intybus George Willet 1935-6-28 s.n. Lassen Susanville Comment
  UCD59781  Cinna latifolia John Thomas Howell; G. H. True 1973-8-1 50346 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UCD159568  Cirsium D. S. Park 2011-6-27 305 Lassen Near Antelope Mt. 1999 Comment
  UC1035883  Cirsium andersonii Annie M. Alexander and Louise Kellogg 1946-8-13 5156 Lassen w side of Eagle Lake Eagle Lake Comment
  UC1136774  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spr. Exp. Range Lassen Forest 1825 Comment
  CDA1129  Cirsium canescens T. C. Fuller 1966-7-22 14981 -B 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
  CDA1169  Cirsium cymosum T. C. Fuller 1963-7-16 10921 -A Lassen West of Hwy 395; 14.3 miles south of Ravendale. 0 Comment
  CHSC75452  Cirsium cymosum Vernon H. Oswald 1999-6-9 9740 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. Along the road. 1356 Comment
  UCD20369  Cirsium cymosum Joe DiTomaso 2002-6-5 s.n. Lassen about 3 miles northwest of the junction between Nevada, Modoc, and Lassen counties. Comment
  CAS-BOT-BC278088  Cirsium douglasii var. breweri Alice Eastwood; John Thomas Howell 1940-6-15 8306 Lassen Willow Creek near Hayden Hill Comment
  RSA0070635  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 Lassen North of the road, 0.4 km east of campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. Comment
  CAS-BOT-BC280423  Cirsium ochrocentrum Lee Wheeler 1951-9-1 s.n. Lassen On Clarence Hoffman Ranch Comment
  CAS-BOT-BC286304  Cirsium scariosum Alice Eastwood; John Thomas Howell 1940-6-11 7961 Lassen Eastern Fall River Valley Comment
  CAS-BOT-BC286305  Cirsium scariosum John Thomas Howell 1934-7-6 12435 Lassen Harvey Valley Comment
  CAS-BOT-BC286308  Cirsium scariosum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49427 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC286309  Cirsium scariosum Louella Bass 1973-6-17 117 Lassen Elysian Valley 1325 Comment
  CDA36753  Cirsium scariosum D. B. Joley 1976-6-16 10 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  SBBG7961  Cirsium scariosum var. americanum H. and M. Dearing 1938-7-1 2242 Lassen W of Susanville Comment
  OBI63042  Cirsium scariosum var. americanum David J. Keil, with Kathleen A. Keil et al. 2004-7-9 30305 Lassen Along California Route 44 east of Shasta County line, just west of junction with forest road 32N21 to Butte Lake. Lassen National Forest. 43 deg. 38.615'N x 121 deg. 18.370'W 1615 Comment
  UCR244103  Clarkia lassenensis Jim Andre, G. L. Clifton 1993-6-9 19699 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UC506933  Clarkia rhomboidea George A. Fischer, Irwin H. Johnson 1933-7-14 F 246 Lassen Lassen Forest 1767 Comment
  CHSC61223  Clarkia stellata P. V. Caldwell 1972-6-15 225 Lassen Eagle Lake: W face on Black Mtn. 1706 Comment
  CHSC83619  Clarkia stellata L. P. Janeway 2001-6-28 7233 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  CHSC64847  Claytonia rubra subsp. depressa Vernon H. Oswald 1995-6-26 6940 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
  JEPS107399  Claytonia rubra subsp. depressa Lowell Ahart, John Dittes 2005-6-1 11882 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1470 Comment
  JEPS25528  Cleome platycarpa Rimo Bacigalupi with Lincoln Constance 1959-6-16 7142 Lassen 0.25 mi s U.S. Highway 395 junction with road to Smoke Creek (beside U.S. Hwy 395) 1341 Comment
  NY222742  Cleome platycarpa A. A. Heller 1938-6-23 15207 Lassen Ridge north of Mapes on U. S. Highway #395. Upper Sonoran Life Zone. 1371.6 Comment
  NY222746  Cleome platycarpa N. H. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  UC1393119  Cleome platycarpa John L. Strother 1970-5-23 951 Lassen about 6 mi n Honey Lake 1280 Comment
  JEPS42689  Cleomella parviflora Mrs. R. M. Austin and Mrs. C. C. Bruce Jun 1898 2364 a Lassen Shumway Comment
  UCD150394  Cleomella parviflora Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  CAS-BOT-BC423223  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  CHSC64779  Cleomella plocasperma Vernon H. Oswald 1995-6-7 6834 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. On a flat dominated by greasewood and saltgrass near the railroad. 1231 Comment
  NY242079  Cleomella plocasperma R. F. Hoover 1940-9-29 4642 Lassen Litchfield. Comment
  RSA294659  Cleomella plocasperma A. Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  UCD150400  Cleomella plocasperma Harry A. George and F. K. 1957-8-15 s.n. Lassen Honey Lake Wildlife Area, Dakin Unit. Comment
  SBBG66408  Collinsia childii E. Rockwell -Jun-1925 1023 Lassen Eagle Lake 1554 Comment
  JEPS107462  Collinsia parviflora Lowell Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  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
  RSA0035917  Collinsia parviflora Lowell A. Ahart, John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0059629  Collinsia parviflora Lowell Ahart, John Dittes 2011-6-20 17487 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
  UC1023722  Collinsia parviflora Francis W. Pennell 1940-6-9 25752 Lassen 7 mi n of Madeline (Route 395); Route 395 1615 Comment
  HSC75886  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19258 Lassen Harvey Valley near Cone Springs Comment
  UC1537483  Collomia grandiflora Gordon H. True Jr. 1938-7-9 906 Lassen near Horse Lake 1524 Comment
  CHSC92760  Collomia tinctoria L. P. Janeway 2005-7-4 8468 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  RSA712891  Collomia tinctoria L. P. Janeway 2005-6-3 8450 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. Comment
  SD113909  Collomia tracyi Darley F. Howe 1964-8-1 3912 Lassen Parsnip Creek, Warner Mts., Modoc National Forst 1829 Comment
  UC1567424  Comandra umbellata subsp. californica G. Schoolcraft 1989-6-7 1908 Lassen Shaffer Mountain near top Shaffer Mountain 2011 Comment
  HSC95339  Comarum palustre Gordon Leppig, J. Cromwell 1997-7-27 607 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CDA3699  Conringia orientalis E. E. Fix 1961-6-1 Lassen E. Williams ranch, Termo. 0 Comment
  CDA3700  Conringia orientalis Agricultural Commissioner Jul 1948 Lassen Susanville. 0 Comment
  POM33286  Conyza canadensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC6277  Corallorhiza maculata A. Santos 1946-7-11 Lassen Silver Lake. 1981 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
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  CHSC76102  Cordylanthus maritimus subsp. canescens Lowell Ahart; Vernon H. Oswald 1999-9-13 8218 Lassen About 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  CHSC77234  Cordylanthus ramosus G. Schoolcraft 1999-8-10 2873 Lassen S. of Doyle Grade about 2.5 mi. w. of Doyle, CA. 1584 Comment
  SEINET10739210  Cornus sericea subsp. sericea Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 839 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  UC1776697  Cornus sericea subsp. sericea G. Schoolcraft 1994-8-3 2424 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  CHSC117526  Crassula aquatica Lowell Ahart; John Dittes 2016-7-13 21117 Lassen Strand of the pond, near where drainage enters pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  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
  CAS-BOT-BC290391  Crepis acuminata G. L. Stebbins, Jr.; E. B. Babcock 1936-6-7 1763 Lassen Near summit east of Red Rock 1818 Comment
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  CHSC29884  Crepis bakeri Robin L. Ondricek 1978-7-15 98 Lassen On the ne and nw sides of Lower Dry Lake in the area where the trees begin. 1645 Comment
  UC91874  Crepis intermedia T. S. Brandegee 1892-7-26 Lassen near Honey Lake; Milford Comment
  CAS-BOT-BC291551  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-11 2328 Lassen Black Mountain 1 1/2 miles from summit 1889 Comment
  JEPS36426  Crepis monticola W. L. Jepson 1910-6-10 4108 Lassen King Creek 1524 Comment
  UC1136842  Crepis occidentalis George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 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
  CDA4444  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
  CHSC5206  Crepis pleurocarpa 1944-6-28 Lassen Eagle Lake. 1584 Comment
  JEPS107791  Crepis pleurocarpa Lowell Ahart, John Dittes 2005-6-2 11934 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
  UC1542943  Crocidium multicaule G. Schoolcraft 1987-4-29 1686 Lassen Ash Valley RNA 1554 Comment
  UC1587077  Crocidium multicaule G. Schoolcraft 1991-5-6 2131 Lassen 4.5 mi s Adin (along Hwy 139) 1325 Comment
  CHSC71895  Crypsis schoenoides Vernon H. Oswald; Lowell Ahart 1998-9-8 9577 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Near the highway. 1255 Comment
  UC1140905  Crypsis vaginiflora L. D. Whitney 1935-7-28 3527 Lassen Bieber Pit River Comment
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Jun 24 2009
  UC767881  Crypsis vaginiflora R. F. Hoover 1940-10-10 4680 Lassen Johnstonville Comment
  UCD59991  Crypsis vaginiflora R. Tofsrud 1947-7-1 246 Lassen Between Bieber and Nubieber. Comment
  CHSC13599  Cryptantha J. Pitts 1972-6-23 268 Lassen Ca. 40 yds e of Shepherd's Hall, Eagle Lake Field Station. Comment
  CHSC68849  Cryptantha Vernon Oswald; Lowell Ahart 1997-6-24 8593 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
  SBBG6231  Cryptantha affinis H. and M. Dearing 1938-6-30 2226 Lassen ca. 50 mi W of Susanville Comment
  JEPS117574  Cryptantha ambigua Lowell Ahart, John Dittes 2010-7-31 17023 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
  SEINET10972821  Cryptantha ambigua Jeffrey Huber 1971-6-2 Huber 126 Lassen Approx. 30 mi N of Susanville, on CA Hwy 139, in basalt; Pinus-Artemesia-Juniper Assoc. 1646 Comment
  CHSC5014  Cryptantha circumscissa L. G. Bennett 1967-7-5 111 Lassen Immediate vicinity of Eagle Lake Biological Station, Eagle Lake. 1554 Comment
  SJSU11363  Cryptantha glomeriflora J. W. Tilden 1960-6-27 1494 Lassen Westwood 1524 Comment
  RSA0011499  Cryptantha hendersonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 46976 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  UC584347  Cryptantha humilis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2267 Lassen sw of Diamond Mt. (s of Susanville) 2164 Comment
  NY1111719  Cryptantha intermedia var. grandiflora N. H. Holmgren 1980-7-3 9474 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  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
  JEPS94701  Cryptantha pterocarya Vernon H. Oswald and Lowell Ahart 1998-5-22 9112 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0;.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  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
  CHSC92723  Cryptantha simulans L. P. Janeway 2005-7-3 8448 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  UC1584020  Cryptantha watsonii G. Schoolcraft 1990-6-12 2089 Lassen about 17 mi e Ravendale (in Pine Dunes RNA) 1706 Comment
  OBI75868  Cuscuta occidentalis Anthony Baniaga 2011-8-9 492 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
  NY674779  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale, CA 1737 Comment
  UC1587038  Cynoglossum occidentale G. Schoolcraft 1991-7-30 2192 Lassen Bear <Sring> on n. side of widow Mt. 1780 Comment
  UC1037350  Cystopteris fragilis Leo Whitney 1935-5-26 3142 Lassen 10 mi e Adin (lava bluff at Ash Creek) Comment
  CAS-BOT-BC208394  Dalea ornata Arnold Tiehm; Raymond Evans; James Young 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest if Litchfield 1371 Comment
  SEINET3895836 Image available Damasonium californicum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0 1698 Comment
  UC1130604  Damasonium californicum A. Simontacchi 1940-7-4 914 Lassen s. shore Government Lake; Lassen Nat'l Forest, Halls Flat Quad., Government Lake Comment
  CHSC66281  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1996-6-24 7839 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
  CAS-BOT-BC192330  Danthonia unispicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50691 Lassen South and southeast of Diamond Mt. 2286 Comment
  UC1609107  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1993-6-28 5579 Lassen Harvey Valley Rd. (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  UCD61347  Danthonia unispicata L. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  HSC41628  Deinandra lobbii Barbara Kelly 1977-8-10 581 Lassen Along Adin Susanville Road, mileage marker 23.0, S of Adin Comment
  SD51285  Deinandra lobbii Darley F. Howe 1961-8-4 3135 Lassen 11.5 miles east of McArthur on U. S. Highway 299. Comment
  UC1924575  Delphinium andersonii Debra Valov 2006-5-29 2006026 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1275 Comment
  UC619271  Delphinium andersonii J. and H. W. Grinnell 1938-6-13 1098 Lassen sage flat near Ravensdale 1554 Comment
  SEINET5337963  Delphinium andersonii F. B. Headley Unknown s.n. Lassen Honeylake, Calif. Comment
  UC726247  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass east of Westwood. 1706 Comment
  RSA0005300  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 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
  CAS-BOT-BC9946  Delphinium nudicaule Mrs. Baldwin 1928-5-10 N. S. Lassen Coyote Flat. Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 Comment
  CHSC36497  Delphinium nudicaule Theresa Costa 1982-6-3 29 Lassen Ca. .3 mi s jct forest service rds 5.16 and 5.17, ca. 5 yd w 5.16, heading toward 5-corners. Comment
  CHSC7728  Delphinium nudicaule Beverley J. Wise 1969-5-9 84 Lassen 11.3 mi. west of Susanville on Forest Serv. 8246 off Hwy 36. 1524 Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  CAS-BOT-BC116054  Delphinium nuttallianum Elmer Ivan Applegate 1929-6-21 5780 Lassen Kelley's Camp, Warner Valley, Mt. Lassen region Comment
  HSC27052  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19165 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC116043  Delphinium nuttallianum Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass. Comment
  UCD61119  Deschampsia cespitosa A. L. Hormay 1941-6-23 13 Lassen Lassen National Forest. Burgess Spring. 1676 Comment
  JEPS71178  Deschampsia cespitosa subsp. cespitosa Brown and Wieslander 71 Lassen Comment
  UC1137794  Deschampsia cespitosa subsp. cespitosa George A. Fischer and Irwin H. Johnson 1933-7-15 F 244 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  CHSC29861  Deschampsia danthonioides Robin L. Ondricek 1978-7-15 102 Lassen Where the spring arises above the dam at Murrers Upper Meadow. 1548 Comment
  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
  UC1131558  Deschampsia danthonioides Robert W. Gardner 1937-6-20 G- 21 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UCD62833  Deschampsia danthonioides Malcolm A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles N of Madeline. Comment
  UC1024651  Deschampsia elongata Leo Whitney 1933-8-3 2203 Lassen ca. 8 mi. n.w. Eagle Lake (Slate Creek); Lassen Nat'l Forest, Slate Creek 1920 Comment
  UC1024780  Deschampsia elongata Leo Whitney 1933-8-15 2244 Lassen ca. 8 mi. n.w. Eagle Lake (Slate Creek); Lassen Nat'l Forest, Slate Creek 1920 Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  CAS-BOT-BC43487  Descurainia sophia John Thomas Howell 1975-7-23 51400 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC57356  Descurainia sophia B. G. Clark 1987-4-15 22 Lassen Lassen or Inyo counties. Top of knoll 1/4 mi sw of Lassen College adjacent and west of hwy 139. Comment
  UCD114789  Descurainia sophia R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  CAS-BOT-BC502558  Dichelostemma congestum A. M. Vollmer; L. Beane 1953-7-1 95 Lassen Along Halls Flat road, beginning 6 mi W of Susanville to McCarthur 1554 Comment
  POM109921  Dichelostemma multiflorum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin s Ranch. 1463 Comment
  SJSU13913  Dieteria canescens N. A. Hopkins 1986-8-28 1382 Lassen along County Road 33 (Scott Road), Lower Long Valley, N of Highway 70 & E of the Beckwourth Pass Comment
  CAS-BOT-BC299810  Dieteria canescens var. canescens Ella Dales Cantelow 1940-10-5 3412 Lassen N.W. of Johnstonville Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle 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
  CHSC4832  Diplacus jepsonii R. Carter 1967-7-14 602 Lassen Growing on n side of rd. ca. 3.5 mi e of Silver Lake between rd (31N07) and Susan River. 1828 Comment
  CHSC23562  Diplacus mephiticus W. O. Baum 1971-7-9 27 Lassen S and e slopes of Gallatin Peak. 2042 Comment
  CHSC4812  Diplacus mephiticus R. Carter 1967-7-7 577 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  CHSC5000  Diplacus mephiticus K. C. Newman 1967-7-1 58 Lassen Collected ca. 3 mi NW of ELBS on the other side of the lake along rd to Spauldings. 1554 Comment
  CAS-BOT-BC208723  Distichlis spicata C. S. Robinson 1928-9-18 119 Lassen Hanna Estate, Morgan Springs 1508 Comment
  CHSC13507  Distichlis spicata J. Pitts 1972-6-22 251 Lassen 150 yds. n of Eagle Lake Biology Station. Comment
  JEPS123846  Distichlis spicata Lowell Ahart, John Dittes 2015-7-14 20333 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  UC1776683  Dodecatheon conjugens G. Schoolcraft 1999-5-5 2814 Lassen Along Tuledad Road about 2 mile NE of Dodge Reservoir 1859 Comment
  UC559942  Dodecatheon conjugens Leo Whitney 1935-6-11 3225 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  UC773868  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  CHSC4763  Downingia bacigalupii R. Carter 1967-7-16 622 Lassen Growing in drying vernal pool along side rd. Comment
  CHSC5223  Downingia bacigalupii J. B. Kimsey 1946-6-11 Lassen Eagle Lake. Pine Creek. 1584 Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  JEPS108450  Downingia bacigalupii Lisa Schultheis 1995-6-27 227 -95 Lassen About 3.5 mi S of Madeline, W side of Hwy 395. Comment
  CHSC30606  Downingia bicornuta T. M. Lane 1975-6-23 28 Lassen 50 m n of spring headwaters of Willow Cr; 3.2 km ese of Eagle Lake Field Station; 22.4 km n of Susanville. 1589 Comment
  RSA28137  Downingia bicornuta Elmer I. Applegate 1929-6-24 5883 Lassen Pond just north of Beiber, NW corner of county. 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
  CDA42329  Downingia elegans G. D. Barbe 1982-7-12 3869 Lassen Grasshopper Valley; 0.8 miles northeast of Highway 139, on South Grasshopper Road. 0 Comment
  SJSU3174  Downingia insignis J. W. Tilden 1958-6-27 1290 Lassen Madeline Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  UC1520665  Downingia insignis Noel H. Holmgren and Patricia K. Holmgren 1978-6-10 8902 Lassen 9 mi ene (8 mi air distance) Termo; Madeline Plains, Coyote Flat 1630 Comment
  CAS-BOT-BC266476  Downingia laeta Philip A. Munz 1947-5-20 11892 Lassen Milford 1264 Comment
  RSA0035918  Downingia laeta Lowell A. Ahart, John Dittes 2008-6-20 14928 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
  UCD55040  Downingia laeta Malcolm A. Nobs; S. Galen Smith 1949-7-20 1047 Lassen Bieber; along Highway 299. Comment
  SEINET8039620  Downingia laeta G. Schoolcraft 1995-6-6 2493 Lassen Laver Spring. 1585 Comment
  CHSC108018  Draba verna var. aestivalis Lowell Ahart; John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC61140  Draba verna var. aestivalis Vernon H. Oswald; Lowell Ahart 1993-5-12 5391 Lassen Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road. 1652 Comment
  JEPS107454  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
  JEPS118282  Draba verna var. aestivalis Lowell Ahart, John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CHSC68742  Draba verna var. verna Vernon H. Oswald; Lowell Ahart 1997-5-27 8522 Lassen Small impoundment on Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi northeast of Hwy. 139. 1731 Comment
  CHSC71081  Draba verna var. verna Vernon H. Oswald; Lowell Ahart 1998-5-22 9128 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
  CAS-BOT-BC401538  Drosera rotundifolia G. Schoolcraft 1997-8-5 2648 Lassen Along Robbers Creek near Robbers Spring 1798 Comment
  JEPS106520  Drymocallis glandulosa var. glandulosa L. P. Janeway 2004-6-26 8154 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest 1750 Comment
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 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
  JEPS123974  Elatine Lowell Ahart, John Dittes 2015-7-13 20295 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC60897  Elatine californica Vernon H. Oswald; Lowell Ahart 1993-7-8 5661 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1706 Comment
  RSA252429  Elatine californica R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39136 Lassen Said Valley Reservoir. 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
  CAS-BOT-BC113615  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  CHSC112770  Eleocharis acicularis Lowell Ahart; John Dittes 2013-7-22 18880 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1818  Eleocharis macrostachya J. Burtt Davy Jun 17-24 1897 3287 Lassen Honey Lake Valley, W end of lake Comment
  UCD55301  Eleocharis macrostachya Ellen Dean; Gary Schoolcraft 2006-5-16 3130 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-BC112846  Eleocharis macrostachya John Thomas Howell 1973-7-10 49805 Lassen Near Susanville on road to Janesville. 1295 Comment
  UC1142965  Eleocharis quinqueflora A. L. Hormay 1941-6-25 19 Lassen Burgess Spring Lassen National Forest 1676 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
  CHSC100134  Elymus cinereus L. P. Janeway 2008-8-2 9527 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Tanch Road 1.8 km west of the CA-NV line. 1349 Comment
  CAS-BOT-BC227484  Elymus elymoides John Thomas Howell 1976-7-20 52000 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  CAS-BOT-BC227489  Elymus elymoides David D. Keck; J. Clausen 1935-6-24 3751 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC227491  Elymus elymoides G. Schoolcraft 1989-6-19 1917 Lassen Ash Valley RNA/ACEC Comment
  UC1924248  Elymus elymoides Debra Valov 2004-6-9 2004264 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCR17284  Elymus elymoides Frank C. Vasek 1975-7-11 750711- 35 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UC1537224  Elymus elymoides subsp. elymoides Gordon H. True Jr. 1937-7-10 786 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1524 Comment
  UC773975  Elymus elymoides subsp. elymoides L. R. Short and Wm. Gansberg 1936-7-9 S- 477 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1783 Comment
  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
  JEPS128170  Elymus elymoides var. californicus M. C. Mahoney, J. A. Nash 2017-7-20 CA 350 -84 Lassen On Snowstorm Mt. From Susanville take Highway 395 N. Turn left onto an unnamed road that heads west onto Snowstorm Mt. Follow thus rough road for ~5 miles before taking a right onto a road going SE towards Snowstorm Mt. summit. About 1 mile up, the population is on either side of this road. Comment
  JEPS128171  Elymus elymoides var. californicus M. C. Mahoney, J. A. Nash 2017-7-31 CA 350 -86 Lassen On Fredonyer Peak. From Susanville take Highway 139 N towards Eagle Lake and turn right following signs for Fredonyer Peak Fire Lookout. Towards the top, stay right at both forks in the road. Follow the road past the last fork for two miles. Population is on both sides of the road. Comment
  CAS-BOT-BC206729  Elymus glaucus subsp. glaucus L. S. Smith 1918-8-11 1021 Lassen Lost Lake, Camp One, Modoc Forest 2438 Comment
  CAS-BOT-BC206733  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51987 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CHSC117482  Elymus spicatus L. P. Janeway; B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  UC1136821  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 230 Lassen Patterson Flat Lassen <National> Forest 1737 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
  SEINET12758322  Elymus triticoides D. Snider 1942-8-30 s.n. Lassen Pine Creek Camp. 1524 Comment
  SEINET3129054  Elymus triticoides J. B. Davy 1897-1 sn Lassen Honey Lake Valley. Comment
  UCR7840  Elymus virescens Marilyn Malin 1968-6-21 249 Lassen Above Pine Creek Fish Hatchery on the NW side of Eagle Lake. Comment
  CDA2066  Elytrigia repens H. S. Milton, P. Milton Jul 1980 Lassen Herman S. & Paul Milton Ranch, Riverside District, Hwy 395, 8 miles east of Susanville. 0 Comment
  CDA753  Ephedra viridis S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC6215  Ephedra viridis J. B. Kimsey 1946-6-17 Lassen N. Horse Lake. Eagle Lake. 1554 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
  JEPS94703  Ephedra viridis Vernon H. Oswald and Lowell Ahart 1998-5-22 9103 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  UC565391  Ephedra viridis Junea Kelly 1937-5-30 Lassen near Horse Lake Comment
  SEINET5335198  Ephedra viridis F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  SEINET12539665  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1537612  Epilobium brachycarpum Gordon H. True Jr. 1936-6-26 550 Lassen head of creek 2 mi e Eagle Lake; Willow Creek 1584 Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  HSC95335  Epilobium ciliatum subsp. ciliatum Gordon Leppig 1998-8-17 1054 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS43851  Epilobium ciliatum subsp. ciliatum W. L. Jepson 1939-8-11 19378 Lassen Milford 1280 Comment
  JEPS114690  Epilobium ciliatum subsp. glandulosum Lowell Ahart, John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC1567379  Epilobium densiflorum G. Schoolcraft 1989-7-18 1984 Lassen s Clark's Valley Rd. (near Box Spring) 1813 Comment
  UC1924202  Epilobium densiflorum Debra Valov 2005-8-20 2005223 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC303068  Epilobium glaberrimum subsp. glaberrimum Pearl Safford Lassen Susanville [uncertain locality] Comment
  JEPS39254  Epilobium hallianum Brown and Wieslander 1922-7-23 38 Lassen Martin Sprs. Eagle Lake Comment
  SEINET3271522 Image available Epilobium oregonense Marcus E. Jones 1897-6-30 Lassen 4 mi. below Eagle Lake 1524 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
  CHSC12494  Equisetum arvense Carol Weld 1969-6-26 46 Lassen 7.8 miles S. W. of Eagle Lake Field Station. 1584 Comment
  JEPS88087  Equisetum laevigatum Vernon H. Oswald and Lowell Ahart 1996-6-17 7820 Lassen ca. 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, at 6 mi post of Devil's Corral Trailhead); Modoc Palteau 1420 Comment
  SBBG115910  Eragrostis cilianensis J. T. Howell 1973-7-10 49793 Lassen city park, Susanville 1295 Comment
  SBBG115768  Eragrostis mexicana subsp. virescens J. T. Howell 1976-7-19 51943 Lassen Susanville 1296 Comment
  CAS-BOT-BC174120  Eremogone aculeata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16359 Lassen On ridge above NE end of Eagle Lake Comment
  CAS-BOT-BC174122  Eremogone aculeata Clare B. Hardham 1971-8-22 18426 Lassen Diamond Mountain 2346 Comment
  CHSC89729  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8165 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CAS-BOT-BC174201  Eremogone congesta var. congesta Clarence R. Quick 1964-7-29 64 -88 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CHSC66382  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1996-6-17 7798 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  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
  SJSU3559  Eremogone congesta var. subcongesta V. Hardham 1965-7-12 129 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139, Modoc National Forest 1463 Comment
  CAS-BOT-BC159994  Eremothera boothii subsp. alyssoides David D. Keck; J. Clausen 1935-6-24 3741 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC159995  Eremothera boothii subsp. alyssoides Mrs. C. C. Bruce 1898-6-1 2139 Lassen Shumway 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
  CAS-BOT-BC159999  Eremothera boothii subsp. alyssoides Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 7 miles south of Secret Valley C.C.C. Camp Comment
  SEINET4132785  Eremothera boothii subsp. alyssoides A. Tiehm 1980-1 5754 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  CAS-BOT-BC160008  Eremothera boothii subsp. boothii Louella Bass 1978-6-21 s.n. Lassen East side of Honey Lake Valley near Wendel Comment
  CAS-BOT-BC160009  Eremothera boothii subsp. boothii Louella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  CHSC64796  Eremothera minor Vernon H. Oswald 1995-5-24 6766 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  UC1123886  Eriastrum signatum E. Sawyer 1935-6-29 222 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  CAS-BOT-BC515175  Eriastrum signatum Rimo Bacigalupi; G. T. Robbins 1955-7-21 5417 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  RSA0124146  Eriastrum signatum David B. Dunn 1956-7-3 11922 Lassen On Highway 395. Comment
  NY1012886  Eriastrum sparsiflorum W. W. Eggleston 1911-7-8 7191 Lassen Vicinity of Doyle Station 1290 Comment
  SEINET7356272  Eriastrum sparsiflorum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3932 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  JEPS124584 Image available Eriastrum sparsiflorum M. R. Kempf 1965-7-12 290 Lassen 1 mile N. of Milburn, growing west side of road HWY 398. Comment
  UC23553  Eriastrum wilcoxii M. S. Baker and Frank Nutting 1892-7-2 Lassen s side Dixey Mts. Comment
  CAS-BOT-BC286603  Ericameria bloomeri R. K. Gierisch; D. H. Esplin 1969-8-27 3598 Lassen Lassen National Forest Comment
  SEINET10723416  Ericameria bloomeri Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 155 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC298171  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  RSA518408  Ericameria nauseosa var. oreophila George K. Helmkamp 1990-9-23 A- 2 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  UCD54535  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2720 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CHSC76084  Ericameria nauseosa var. speciosa Lowell Ahart; Vernon H. Oswald 1999-9-13 8201 Lassen On the west side of the dirt road and 1/4 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1483819  Ericameria nauseosa var. speciosa G. Schoolcraft 1980-10-8 359 Lassen w side of Painters Flat 1716 Comment
  UC217115  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11681 Lassen s side of Honey Lake Valley Comment
  UC747216  Ericameria nauseosa var. speciosa G. Thomas Robbins 1945-10-7 2152 Lassen 2-3 mi ne of Burgess Spring (Harvey Valley, se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  UC1776655  Ericameria parryi var. nevadensis G. Schoolcraft 1998-8-19 2803 Lassen N upper slope of Shaffer Mountain 1981 Comment
  CHSC77193  Ericameria suffruticosa G. Schoolcraft 1997-8-6 Lassen Diamond Mtn. 2316 Comment
  SEINET8513560 Image available Erigeron bloomeri A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1090 Lassen Constantia Allotment, West of Peterson's 1490 Comment
  CHSC67162  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 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
  CHSC67463  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 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 rodge N of drainage. 1584 Comment
  HSC81651  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  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
  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
  UC773917  Erigeron bloomeri var. bloomeri L. R. Short and J. Warren 1936-6-23 S- 451 Lassen Burgess Springs Experiment Range Lassen National Forest, Burgess Springs Experiment Range 1741 Comment
  CAS-BOT-BC294486  Erigeron bloomeri var. bloomeri Clarence R. Quick 1964-7-29 64 -90 Lassen Blacks Mt. Experimental Forest 1798 Comment
  SEINET11826499  Erigeron bloomeri var. bloomeri Unknown 1967-1 545 Lassen 10 yds off S side road Comment
  CAS-BOT-BC295979  Erigeron divergens Clare B. Hardham 1969-8-28 17421 Lassen West of Janesville, Sierra Nevada 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
  CHSC91207  Erigeron divergens Lowell Ahart; John Dittes 2005-6-2 11924 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  SEINET5708466 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  CAS-BOT-BC295978  Erigeron divergens Gary Schoolcraft 1984-9-4 1372 Lassen Fredomyer Mtn. 1737 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
  UC1776657  Erigeron eatonii var. nevadincola G. Schoolcraft 1998-6-30 2743 Lassen N slope of Ft. Sage Mountains 1950 Comment
  CHSC89752  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 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
  POM32997  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA504624  Erigeron eatonii var. plantagineus Bruce Bartholomew, B. Anderson 1988-6-25 4374 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  UC1523767  Erigeron eatonii var. plantagineus Gary Schoolcraft 1981-7-8 499 Lassen about 1 mi se Coulthurst flat (on e side of road) 1920 Comment
  UC1776680  Erigeron eatonii var. plantagineus G. Schoolcraft 1993-6-29 2313 Lassen Ash Valley RNA 16 miles E of Adin 1554 Comment
  UCD131889  Erigeron eatonii var. plantagineus Jack Major 1966-6-24 s.n. Lassen Long Valley, 3 miles airline southwest of Patterson Guard Station, northeastern county. 2087 Comment
  CAS-BOT-BC33453  Erigeron elegantulus Milo Samuel Baker; Franklin P. Nutting 1894-7-5 s.n. Lassen Dixey Valley Comment
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 Comment
  UCR18729  Erigeron filifolius Frank C. Vasek 1975-7-11 750711- 10 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CHSC65089  Erigeron inornatus var. calidipetris Vernon H. Oswald; Lowell Ahart 1995-7-24 7146 Lassen Cascade Range. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. Edge of the road. 1905 Comment
  JEPS41565  Erigeron linearis F. W. Peirson 1926-6-24 6855 Lassen Madeline Plain Comment
  POM39968  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA0049610  Erigeron linearis Dean Wm. Taylor 2012-6-7 21231 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  CDA34230  Erigeron pumilus subsp. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  POM33279  Erigeron pumilus subsp. intermedius Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  POM261457  Erigeron pumilus subsp. intermedius Alice Eastwood, John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  HSC81807  Erigeron pumilus var. intermedius Thomas W. Nelson, Jane Nelson 1980-7-6 6029 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  CAS-BOT-BC300310  Erigeron tener G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2285 Lassen Summit Thompson Peak, south of Janesville 2330 Comment
  UC584286  Erigeron tener G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2285 Lassen summit Thompson Peak (s of Janesville) 2346 Comment
  SEINET5333913  Eriogonum baileyi D. Tonenna 2007-8-20 s.n. Lassen Hwy 395, 6 mi. north of Halellujah Junction, west of road 1450 Comment
  JEPS57084  Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-2 7772 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC244039  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen Between Shaffer Mt. and Warren Peak Comment
  SJSU13948  Eriogonum baileyi var. praebens N. A. Hopkins 1986-8-28 1381 Lassen County Rd 33 (Scott Rd), lower Long Valley N of Hwy &0 & E of Beckwourth Pass Comment
  POM253244  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen Grassy, gravelly slope between Secret Valley and Ravendale, on U.S. Highway 395 1524 Comment
  CAS-BOT-BC241837  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N. LItchfield, 26.6 mi S Ravendale 1310 Comment
  RSA338584  Eriogonum collinum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9485 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UC1537297  Eriogonum collinum Gordon H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1493 Comment
  RSA0009291  Eriogonum collinum G. H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1494 Comment
  CAS-BOT-BC246504  Eriogonum douglasii var. meridionale B. J. Hammerly 1941-6-21 45 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  JEPS114757  Eriogonum douglasii var. meridionale Lowell Ahart, John Dittes 2008-6-19 14895 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC85900  Eriogonum douglasii var. meridionale T. S. Brandegee 1872-1 Lassen Susanville Comment
  UC762681  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  UC584321  Eriogonum marifolium G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2289 Lassen s Jaynesville (e slope of Thompson Peak); Thompson Peak 2330 Comment
  CAS-BOT-BC267343  Eriogonum marifolium var. marifolium A. M. Vollmer; L. Beane 1953-7-1 83 Lassen Along Halls Flat Road beginning 6 miles west of Susanville to McArthur 1554 Comment
  NY803607  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-22 2949 Lassen About 3 miles northwest of Constantia, CA 1 mile west on FS Road 24N22X 1417 Comment
  CAS-BOT-BC268790  Eriogonum nidularium Robert F. Hoover 1940-9-29 4643 Lassen Pass between Shaffer Mountain and Warren Peak Comment
  SD132453  Eriogonum nudum G. Helmkamp 1990-9-23 G 11 Lassen Sagebrush scrub area N of Ravendale. Riparian area beside small creek 1676 Comment
  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
  CHSC106170  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  UCR67381  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M 4 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  UC1032332  Eriogonum nudum var. pubiflorum A. Simontacchi 1940-7-2 931 Lassen 6. 2 mi ene Ebey Lake; Lssen National Forest, Halls Flar Quadrangle Comment
  UC1137675  Eriogonum nudum var. pubiflorum George A. Fischer, Irwin H. Johnson 1933-7-14 F 258 Lassen Lassen National Forest 1783 Comment
  UC761785  Eriogonum nudum var. pubiflorum R. F. Hoover 1940-9-28 4629 Lassen Susanville Comment
  SEINET530684  Eriogonum nummulare Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 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
  RSA0020051  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen National Forest. NW of intersection of 29N02Y and the ''B'' spur. 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
  HSC63562  Eriogonum prociduum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6027 Lassen Ash Valley, along branch road off Adin-Madeline road, 200 yds. from junction 1555 Comment
  RSA59736  Eriogonum prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W of Madeline on road from Adin 1677 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
  CHSC68901  Eriogonum spergulinum var. reddingianum Vernon Oswald; Lowell Ahart 1997-6-24 8596 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). Along the edge of the road. 1685 Comment
  CAS-BOT-BC272623  Eriogonum spergulinum var. reddingianum M. S. Baker; Frank Nutting 1894-1-1 s.n. Lassen Unspecified Comment
  CHSC71393  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen Shugru Reservoir in Bass Hill WA on Hwy. 395 between Susanville and Janesville, 2.7 mi southeast of Hwy. 36. Roadside flat. 1243 Comment
  NY762353  Eriogonum strictum var. anserinum J. T. Howell 1934-7-7 12478 Lassen Harvey Valley 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-BC267895  Eriogonum umbellatum A. M. Vollmer; L. Beane 1953-7-1 46 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC267898  Eriogonum umbellatum John Thomas Howell 1934-7-6 12436 Lassen Harvey Valley Comment
  CAS-BOT-BC267899  Eriogonum umbellatum John Thomas Howell 1976-7-20 52009 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek, Sierra Nevada 1432 Comment
  RSA0029317  Eriogonum umbellatum John F. Emmel 1997-6-8 1489 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. 1402 Comment
  RSA0092311  Eriogonum umbellatum var. modocense Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31429 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  HSC17377  Eriogonum umbellatum var. modocense M. T. Milligan 1964-7-17 144 Lassen 3.5 mi. W of Eagle Lake Rd. on Marrill Flat Rd. 1677 Comment
  HSC17447  Eriogonum umbellatum var. modocense J. Wendell Howe 1934-7-9 1295 Lassen Cinder Cone, Lassen NP 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
  NY399398  Eriogonum umbellatum var. nevadense H. D. D. Ripley 1943-6-13 5713 Lassen South of Johnstonville 1325.9 Comment
  OBI75886  Eriogonum umbellatum var. nevadense Anthony Baniaga 2011-7-1 413 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  RSA62913  Eriogonum umbellatum var. nevadense B. J. Cox, David B. Dunn 1971-6-2 2605 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 in Artemisia tridentata. Pinyon pine, Jeffery Pine along high ridge and in sandy wash. 1402 Comment
  UC1137677  Eriogonum umbellatum var. nevadense L. R. Short and J. Warren 1936-6-12 S- 432 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1804 Comment
  JEPS117588  Eriogonum umbellatum var. polyanthum Lowell Ahart, John Dittes 2010-7-31 16988 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  POM105077  Eriogonum umbellatum var. polyanthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UCR208066  Eriogonum umbellatum var. polyanthum L. P. Janeway 2004-6-26 8157 Lassen High Cascade Range, about 1.3 km WSW of Patterson Flat, at junction of roads 35N08 and 35N20, in Blacks Mountain Experimental Forest 1750 Comment
  CAS-BOT-BC262364  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC262365  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC4953  Eriogonum vimineum R. Carter 1967-6-27 561 Lassen Growing ca. 10 yds off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  CHSC4981  Eriogonum vimineum R. Clicquennoi 1967-6-24 32 Lassen On the approaches to Murrer's Upper Meadow 4 mi e of Eagle Lake Biology Station. 1524 Comment
  JEPS117563  Eriogonum vimineum Lowell Ahart, John Dittes 2010-7-31 17018 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS127353  Eriogonum vimineum Lowell Ahart, John Dittes 2016-7-13 21132 Lassen 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  RSA125290  Eriogonum vimineum Peter H. Raven, Otto T. Solbrig 1958-6-17 13272 Lassen Along Hwy 395, 19.0 miles south of Ravendale Comment
  RSA252387  Eriogonum vimineum Robert F. Thorne, C. W. Tilforth 1969-9-6 39260 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC262368  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  NY399577  Eriogonum vimineum H. D. D. Ripley 1943-6-15 5763 Lassen Northeast of Viewland 1341.1 Comment
  POM260787  Eriogonum vimineum Alice Eastwood, John T. Howell 1940-6-16 8343 Lassen Janesville. Comment
  SDSU7202  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2.0 Miles north of Janesville. 1219 Comment
  POM111648  Eriophorum gracile Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC300339  Eriophyllum Mike Vasey 1990-6-30 9058 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  HSC23530  Eriophyllum lanatum Robyn Carter 1967-6-23 538 Lassen ca. 10 yds. off N side road; E side of Eagle Lake Murrers Meadow 1585 Comment
  CAS-BOT-BC308137  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  JEPS103221  Eriophyllum lanatum var. achilleoides G. Schoolcraft 1991-7-30 2199 Lassen E. slope of widow mountain 1859 Comment
  UC1142994  Eriophyllum lanatum var. achilleoides August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest, Harvey Mtn. 2133 Comment
  OBI75879  Eriophyllum lanatum var. croceum Anthony Baniaga 2011-6-29 402 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW 1500 Comment
  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
  JEPS19759  Eryngium alismifolium Rimo Bacigalupi with S. Galen Smith 1957-6-28 6007 Lassen 3.7 mi. s. Ravendale (Madeline Valley); Madeline Valley 1645 Comment
  NY1101607  Eryngium alismifolium G. Schoolcraft 1984-7-31 1329 Lassen Along Hwy 395 about 1 mile north of Ravendale Fire Station 1615 Comment
  POM83000  Eryngium alismifolium Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC648306  Eryngium alismifolium John Thomas Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  UC1533163  Erysimum capitatum G. Schoolcraft 1986-4-28 1529 Lassen lower w slopes Ft. Sage Mtns. 1432 Comment
  UC1584017  Erysimum capitatum G. Schoolcraft 1990-5-15 2047 Lassen about 4 mi s Nubeiber; John's Valley area 1310 Comment
  CAS-BOT-BC55196  Erysimum repandum John Thomas Howell 1934-6-10 11904 Lassen 3 miles south of Ravendale. Comment
  CHSC60857  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1993-6-28 5610 Lassen N of Hwy 44 on Rd. 33N06, on the Sse flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  SBBG15427  Erythranthe breweri H. and M. Dearing 1939-7-1 2244 Lassen 17 mi W of Susanville Comment
  CHSC91306  Erythranthe floribunda Lowell Ahart; John Dittes 2005-6-2 11970 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
  CHSC118855  Erythranthe guttata L. P. Janeway; B. Castro 2015-6-5 11770 Lassen Great Basin, Modoc Plateau. Along County Road 512 16.9 road-km south from Surprise Valley Road towards Tuledad Canyon; in a small northwestern drainage into Post Canyon. 1837 Comment
  CHSC5904  Erythranthe guttata M. West 1946-6-15 Lassen So. end Eagle Lake. 1584 Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  OBI76994  Erythranthe pulsiferae Anthony Baniaga 2011-6-30 403 Lassen Lassen Natl Forest. Fredonyer Pass quad T29N R10E sec 23 NE of SE 1526 Comment
  CHSC54358  Erythranthe rubella Richard Snow 1991-5-5 22 Lassen East of Susanville. Comment
  RSA445591  Eschscholzia californica J. D. Detzer, M. Sacks 1977-7-28 35 Lassen 0.5 km S of Hwy 395, 4 miles W of Milford. 1386 Comment
  CHSC45999  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, .6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin). On and about driveways in front of house. 1280 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  RSA183413  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its jct with Bassett Road (ca 2 miles S of US Hwy 299 and 4 miles SW of Adin). 1280 Comment
  UCD142787  Euphorbia serpillifolia J. M. Tucker 1950-7-25 1974 Lassen Road from Pittville, 35 miles northwest of Susanville. Comment
  CHSC115563  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2015-7-13 20312 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CDA20565  Euphorbia virgata C. Pirosko 2005-7-28 PDR 1303859 Lassen Modoc Plateau; Eagle Brothers Ranch, 20 mi S of Susanville off Hwy 395. 0 Comment
  UCD142354  Euphorbia virgata Fay Roberts 1938-8-21 s.n. Lassen Bieber. Comment
  JEPS31883  Eurybia integrifolia Brown and Wieslander 1922-7-30 14 Lassen Martin Springs Eagle Lake Comment
  CAS-BOT-BC458296  Euthamia occidentalis Louella Bass 1980-8-1 s.n. Lassen Sierra Nevada: Standish Comment
  RSA0027354  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak. 2378 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
  UC1024811  Festuca idahoensis Leo Whitney 1935-6-17 3268 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC53777  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen near Bieber; Big Valley Comment
  UCD66348  Festuca rubra L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  CHSC60393  Fragaria virginiana Mary Ann Showers 1992-6-12 2521 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  SJSU6086  Frasera albicaulis var. nitida J. W. Tilden 1960-6-27 1509 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  OBI75875  Fritillaria atropurpurea Anthony Baniaga 2011-1 Lassen Comment
  RSA367711  Fritillaria atropurpurea Christopher Davidson 1975-6-7 2727 Lassen 2.1 mi W of Westwood on Hwy 36. 1555 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
  CHSC25058  Galium aparine L. B. Barlow 1967-6-23 20 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CDA42123  Galium aparine T. C. Fuller 1963-7-15 10897 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC59813  Galium multiflorum Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In rocks on lower Balls Canyon wall. 1341 Comment
  UC1479580  Galium multiflorum G. Schoolcraft 1980-6-6 253 Lassen sw Herlong; Bird Canyon area 1341 Comment
  UC1479581  Galium multiflorum G. Schoolcraft 1980-5-30 245 Lassen sw Herlong; Bird Canyon 1432 Comment
  UC1226043  Galium multiflorum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8471 Lassen 50 mi se Susanville 1371 Comment
  RSA201314  Galium trifidum var. pusillum J. T. Howell 1959-9-23 34886 Lassen N end of Juniper Lake. 2058 Comment
  CHSC37686  Gayophytum diffusum subsp. parviflorum M. S. Taylor 1982-8-19 5023 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  POM38697  Gayophytum diffusum subsp. parviflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  JEPS27572  Gayophytum heterozygum Brown and Wieslander 1922-7-23 2 Lassen Martin Sprs. Eagle Lake Comment
  UC1137771  Gayophytum heterozygum August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  UCSB64021  Gayophytum humile Ahart, Lowell; Howell, John 1974-7-9 Lassen Near S edge of Eagle Lake 1584 Comment
  SEINET10492287  Gayophytum nuttallii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 870 Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  POM38703  Gayophytum racemosum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  NY999656  Gayophytum ramosissimum J. T. Howell 1974-7-8 50463 Lassen Susanville 1295 Comment
  RSA74475  Gayophytum ramosissimum Milo S. Baker 1936-6-16 8364 Lassen About 30 miles north of Susanville Comment
  UCD55160  Gayophytum ramosissimum Ellen Dean 2006-5-15 3048 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  UC726252  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen 2 mi e Westwood 1524 Comment
  HSC8435  Gentiana newberryi Fred J. Kindel 1955-8-1 Lassen Mt. Meadows Reservoir Comment
  UC1037229  Geranium viscosissimum Leo Whitney 2007 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  JEPS60511  Geum triflorum Brown and Wieslander 1922-7-23 22 Lassen Eagle Lake, Martin Springs Eagle Lake; , Martin Springs Comment
  JEPS96022  Geum triflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7887 Lassen 2.5 mi s of Eagle Lake (Papoose Meadows located 0.5 mi e of Eagle Lake Road (A1), e side of the meadow n of the springs); Modoc Plateau, Papoose Meadows 1633 Comment
  UC477497  Geum triflorum A. G. Brenneis 1928-7-3 14 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  UCR73831  Gilia brecciarum G. L. Webster 1989-5-13 7706 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  CHSC64798  Gilia inconspicua Vernon H. Oswald 1995-5-24 6768 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. Flat bordering the road. 1219 Comment
  SEINET14644567  Gilia inconspicua P. B. Kennedy 1901-6-10 s.n. Lassen Constantia, railroad station. Comment
  RSA104236  Gilia malior Verne Grant, Alva Grant 1956-5-17 21753 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  RSA516988  Gilia ophthalmoides Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  CHSC64800  Gilia salticola Vernon H. Oswald 1995-5-31 6816 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 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
  CHSC25915  Gilia sinuata K. R. Stern 1967-7-1 2437 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  UC128865  Gilia sinuata P. B. Kennedy 1901-6-10 Lassen R.R. Sta Constantia Comment
  CHSC66283  Glyceria borealis Vernon H. Oswald; Lowell Ahart 1996-6-24 7872 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS28295  Glyceria borealis George W. Gillett 1957-7-26 922 Lassen Lassen Volcanic Nat'l Park, Butte Lake 1844 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
  CAS-BOT-BC280599  Glyceria elata John Thomas Howell; Gordon H. True 1973-8-1 50184 A Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC302595  Gnaphalium palustre John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49494 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC82197  Gnaphalium palustre Thomas W. Nelson, Jane P. Nelson 1980-7-6 6052 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS28799  Gnaphalium palustre George W. Gillett 1957-9-4 1124 Lassen e margin of Widow Lake near inlet in drying mud Lassen Volcanic National Park, Widow Lake (on drying margin of pond about 100 yds w of Widow Lake) 2072 Comment
  CAS-BOT-BC110213  Grayia spinosa Peter H. Raven; Otto T. Solbrig 1958-6-17 13274 Lassen Along United States Highway 395, 19.0 miles south of Ravendale. Comment
  CDA23424  Grayia spinosa S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC36464  Grayia spinosa Jeffrey R. Peek 1982-6-1 25 Lassen Ca. 10 yds e of Ravendale Rd, e of Horse Lake. Comment
  CHSC5231  Grayia spinosa V. Holt 1944-6-28 Lassen S slope of Rocky Point, w side of Eagle Lake. 1627 Comment
  HSC27351  Grayia spinosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19302 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  OBI77052  Grayia spinosa Anthony Baniaga 2011-7-1 411 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  UC1136433  Grayia spinosa E. Sawyer 1935-6-27 225 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UC1537382  Grayia spinosa Gordon H. True Jr. 1936-6-26 551 Lassen flats s.e. Standish; Honey Lake Valley 1219 Comment
  UC87888  Grindelia hirsutula T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CHSC37692  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  SEINET8770843 Image available Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Turnoff to Janesville along Hwy 395 Comment
  UC1583961  Gymnosteris parvula G. Schoolcraft 1990-4-16 2011 Lassen about 15 mi ne of Ravendale 1798 Comment
  UCD98139  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CHSC114922  Gypsophila paniculata D. B. Joley 1976-6-22 1 Lassen Janesville. 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-BC231156  Hackelia cusickii Mrs. A S. Baldwin 1928-5-1 s.n. Lassen Coyote Flat, over ridge from Dixie Village Comment
  POM126235  Hackelia cusickii Franklin P. Nutting s.n. Lassen Dixey Mountains Comment
  UC1560394  Hackelia micrantha E. Joyal and D. Mehlman 1988-6-29 1295 Lassen Blue Lake campground Warner Mountains 1850 Comment
  UCR109608  Halogeton glomeratus T. C. Fuller 1962-8-28 9475 Lassen Adjacent to railroad tracks, Herlong Siding 1250 Comment
Read comments
Apr 14 2011
  RSA98051  Halogeton glomeratus Thomas H. Kearney, J. T. Howell 1951-8-20 28229 Lassen Honey Lake Valley near Herlong. 1280 Comment
  UCD98884  Halogeton glomeratus Les Berry; J. L. Myler 1954-8-17 s.n. Lassen Karlo. Comment
  UC1553381  Helianthella californica subsp. nevadensis G. Schoolcraft 1988-7-11 1822 Lassen about 1 mi s Hwy. 44 (on road to Goumaz) 1645 Comment
  UCR57493  Helianthus annuus R. D. Goeden, Don W. Ricker 1989-8-22 890822- 9 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  CHSC64756  Helianthus cusickii Vernon H. Oswald 1995-5-31 6798 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  RSA17683  Helianthus cusickii Elmer I. Applegate 1934-5-4 8927 Lassen South end of Secret Valley Comment
  UC32309  Helianthus cusickii M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC305664  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen On the grade east of Mapes on U. S. Highway #395 1371 Comment
  CAS-BOT-BC305665  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen On the grade east of Mapes on U. S. Highway #395 1371 Comment
  SD64346  Helianthus nuttallii Darley F. Howe 1966-8-26 4303 Lassen Modoc-Lassen County Line, east of Warner Mountains. 1340 Comment
  SEINET10497129  Heliotropium curassavicum var. oculatum Mary Susan Taylor 1974-1 Taylor 269 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC92717  Hemizonella minima L. P. Janeway; B. Castro 2005-7-10 8481 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
  JEPS107809  Hemizonella minima Lowell Ahart, John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  SEINET8734813 Image available Hemizonia pungens subsp. pungens Unknown 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  CHSC30620  Hesperochiron californicus Eric Miller 1975-7-9 14 Lassen E. of Dirt road adjacent to Coleman Lake, 30 ft. S. of overflow. 1950 Comment
  JEPS1670  Hesperochiron pumilus G. S. Crew and C. S. Robinson 1927-6-10 11 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  JEPS127352  Hesperolinon micranthum Lowell Ahart, John Dittes 2016-7-13 21123 Lassen 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CAS-BOT-BC280678  Hesperostipa comata William Rothstrom 1975-6-9 s.n. Lassen Johnstonville. 1/4 mile south of Hwy. 395, west of airport 1264 Comment
  CAS-BOT-BC280679  Hesperostipa comata Margaret Williams; Steven Williams 1974-7-26 74 -L-43 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC593455  Hesperostipa comata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1743 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  UCD85305  Hesperostipa comata P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Comment
  CHSC23522  Hesperostipa comata subsp. intermedia Wayne O. Baum 1971-7-12 71 -67 Lassen E. slope of Gallatin Peak. 1950 Comment
  POM68265  Heterocodon rariflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  CAS-BOT-BC312420  Hieracium albiflorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49448 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  OBI77185  Hieracium greenei Anthony Baniaga 2011-7-18 454 Lassen Lassen NF.2-1/4 mi ESE of Signal Butte. Swains Hole quad. T32N R6E sec 9 NE of SW 1700 Comment
  UC32790  Hieracium horridum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CDA7975  Hieracium scouleri T. C. Fuller 1963-7-15 12904 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  SBBG8442  Hieracium scouleri H. and M. Dearing 1938-7-1 2247 C Lassen near Westwood Comment
  RSA747548  Holodiscus microphyllus var. glabrescens K. M. Meyer, A. Townesmith 2007-7-23 150 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  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
  JEPS114655  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UCD55283  Holosteum umbellatum subsp. umbellatum Ellen Dean; Gary Schoolcraft 2006-5-16 3102 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  UC1024802  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1935-6-23 3291 Lassen Camp 10 Fruit Grower's Supply Company Lassen National Forest Comment
  CAS-BOT-BC284713  Hordeum jubatum John Thomas Howell 1973-7-10 49775 Lassen Fredonyer Pass 1737 Comment
  HSC10190  Hordeum jubatum M. T. Milligan 1964-8-6 200 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA123433  Hordeum jubatum H. S. Yates 1936-8-11 6075 Lassen Baxter Creek 1280 Comment
  UCD85742  Hordeum jubatum Gerald Dickinson 1963-7-15 99 Lassen Ravenville. US Hwy 395. 1618 Comment
  UCR244037  Hordeum murinum subsp. glaucum Jim Andre 1993-6-5 19707 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  JEPS114764  Hordeum murinum subsp. leporinum Lowell Ahart, John Dittes 2008-6-20 14915 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
  UC1924232  Hordeum murinum subsp. leporinum Debra Valov 2004-6-9 2004262 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC157366  Horkelia fusca John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49441 Lassen Elysian Valley, west of Janesville 1325 Comment
  RSA0092310  Horkelia fusca Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31431 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  JEPS44570  Horkelia fusca subsp. tenella Brown & Wieslander 1922-7-23 30 Lassen Martin Sprs., Eagle Lake Comment
  CAS-BOT-BC143982  Horkelia fusca var. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  CAS-BOT-BC55477  Hornungia procumbens Arnold Tiehm; Margaret Williams; Gary Schoolcraft 1986-5-12 10350 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  NY170061  Hutchinsia procumbens N. H. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1680 Comment
  UC614681  Hydrophyllum capitatum var. alpinum L. Constance 1938-6-10 2325 Lassen 0.5 mi w Fredonyer Pass 1676 Comment
  UC124657  Hypericum anagalloides T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  SJSU8059  Hypericum anagalloides J. W. Tilden 1960-6-27 1523 Lassen 5 mi E of Westwood via Moonlight Rd 1524 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
  SEINET10720226  Hypericum perforatum Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 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
  SEINET10904184  Idahoa scapigera David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17766 Lassen Approx. 12 Mi. S. Of adin on ca. Hwy 139, in basalt and clay; along edge or rd. On rolling knoll, in artemesia juniper assoc. 1372 Comment
  SDSU7494  Iliamna bakeri D. F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc National Forest 1829 Comment
  UC879819  Ipomopsis aggregata C. L. Hitchcock 1940-5-26 6601 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River Comment
  HSC17038  Ipomopsis aggregata Fred J. Kindel 1955-6-28 Lassen Susan River Comment
  CHSC59781  Ipomopsis congesta Mary Meyer 1980-7-15 Lassen Found in ash barrens. 1546 Comment
  CHSC4936  Iris missouriensis A. E. Anderson 1967-5-24 33 Lassen In Murrer's Upper Meadow, 4 mi. se Eagle Lake Biological Sta. 1554 Comment
  UC117143  Iris missouriensis Mrs. R. M. Austin 1879-1 302 Lassen Eagle Lake 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
  CHSC25745  Iris tenuissima subsp. purdyiformis John Steiner 1977-6-14 74 Lassen Lassen Volcanic National Park. 250 m ne Manzanita Lake, 250 m e park boundary. 1768 Comment
  CHSC59160  Isoetes bolanderi Vernon H. Oswald; Lowell Ahart 1992-9-15 5215 Lassen Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. Lassen Volcanic National Park. 2164 Comment
  JEPS88085  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1996-6-24 7848 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of the cabins); Modoc Plateau 1633 Comment
  CHSC63380  Iva axillaris subsp. robustior Vernon H. Oswald 1994-7-8 6367 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. On levee roads and along this section of Hwy. 139. 1490 Comment
  CHSC64866  Iva axillaris subsp. robustior Vernon H. Oswald; Lowell Ahart 1995-6-19 6886 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.9 mi e of Hwy. 395, on the down-slope approaching Mud Flat. 1353 Comment
  RSA293373  Iva axillaris subsp. robustior Reino Alava 1957-7-5 1140 Lassen Along Highway no. 395, 4.4 miles S of Ravendale. Comment
  CHSC68763  Ivesia paniculata Vernon H. Oswald; Lowell Ahart 1997-5-27 8494 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of the creek paralleling the road. 1546 Comment
  NY436061  Ivesia paniculata T. W. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 miles E of Adin. 1554.5 Comment
  UC1502548  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
Read comments
Aug 12 2008
  RSA0005626  Ivesia paniculata Thomas W. Nelson, J. P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 miles east of Adin. 1555 Comment
  CHSC30617  Juncus balticus M. A. Dubin 1975-7-20 7 Lassen Marsh 0.8 miles NE of Eagle Lake Field Station. 1569 Comment
  UC1745663  Juncus balticus Annetta M. Carter 1945-9-30 1725 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CHSC93553  Juncus bryoides Lowell Ahart; John Dittes 2005-6-2 11960 Lassen Long Valley, moist meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, 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
  CHSC99280  Juncus bufonius var. congestus Lowell Ahart; John Dittes 2008-6-20 14958 Lassen In meadow, around a new pond, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CDA36732  Juncus bufonius var. occidentalis Barbara L. Wilson, Peter Zika 2011-8-7 16809 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley where route A21 crosses the railroad tracks north of Westwood. Comment
  CHSC93707  Juncus capillaris Lowell Ahart; John Dittes 2005-6-2 11959 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
  CHSC5268  Juncus nevadensis 1944-7-26 Lassen Eagle Lake. Juniper Lake. 2055 Comment
  UC1100991  Juncus nevadensis Malcolm A. Nobs and S. Galen Smith 1947-8-24 8266 Lassen nw shore Blue Lake (n Lassen County) Comment
  UC1553383  Juncus nevadensis G. Schoolcraft 1988-8-10 1849 Lassen 10 mi ne Susanville (along Hwy 139) 1505 Comment
  SEINET6175260  Juncus nodosus B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11503 Lassen Blue Door Flat, 7 or 8 miles east of Highway 395 on county road 510 1774 Comment
  JEPS105651  Juncus occidentalis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the ''22'' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain 1560 Comment
  CHSC106359  Juncus trilocularis Lowell Ahart; John Dittes 2010-7-31 17026 Lassen About 20 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC87114  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  HSC1211  Juniperus californica M. L. Stuart 1965-5-2 55 Lassen 2 mi. N of Termo on Hwy. 395 Comment
  CHSC12465  Juniperus occidentalis Robert W. Severin 1969-6-20 53 Lassen E. L. B. S., 150' n Vesta Holt Hall. 1566 Comment
  CHSC13790  Juniperus occidentalis Anne Linda Brisk 1969-6-19 6 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC23332  Juniperus occidentalis Mark Stopher 1976-1-11 28 Lassen Collected 5 miles north on Eagle Lake turnoff, 3 miles west of Susanville on highway 36. 1463 Comment
  HSC1267  Juniperus occidentalis L. H. Myers 1963-4-10 40 Lassen 1.0 mi. S of Janesville 1280 Comment
  HSC1271  Juniperus occidentalis R. H. Berg 1963-4-6 37 Lassen 10 mi. N of Susanville Comment
  UCD133784  Juniperus occidentalis K. M. Meyer; A. Townesmith 2007-7-19 132 Lassen Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek. 1459 Comment
  UCR164508  Juniperus occidentalis Maile Neel 2000-4-29 G- 2 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10899767  Juniperus occidentalis Jeffrey Huber 1971-6-2 Huber 130 Lassen Approx. 30 mi N of Susanville, on Calif. Hwy 139, in basalt; Pinus-Artemesia-Juniper assoc. 1646 Comment
  UCR4280  Juniperus occidentalis var. australis Frank C. Vasek 1965-8-31 650831- 04 Lassen On Calif. Hwy 139 near Willow Creek Campground (USFS), c. 57 mi north of Susanville 1524 Comment
  RSA235556  Juniperus occidentalis var. occidentalis Noel Holmgren, Patricia K. Holmgren 1970-7-28 4625 Lassen North end of Petersen Mountain, near US 395, 8 miles north of Halleluja Junction (junction with Calif. 70). 1524 Comment
  RSA519137  Juniperus occidentalis var. occidentalis George K. Helmkamp 1990-9-23 D- 6 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  RSA597841  Juniperus occidentalis var. occidentalis F. C. Vasek 1964-9-12 640912 -8 Lassen Road to Karlo, 3.8 miles from its junction with the Litchfield - Leavit Road Comment
  SEINET10719654  Juniperus occidentalis var. occidentalis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 132 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  NY20366  Juniperus osteosperma J. T. Howell 1961-9-26 36969 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC6262  Kelloggia galioides W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 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
  CHSC65307  Kochia scoparia Vernon Oswald; Lowelll Ahart 1995-8-14 7172 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
  POM113359  Koeleria macrantha Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  UC1136815  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-8-3 F 278 Lassen Lassen Forest, <Lassen National Forest> 1737 Comment
  UC163604  Koeleria macrantha Milo S. Baker Lassen flat near Eagle Lake; flat near Eagle Lake Comment
  UC506998  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-7-12 F 205 Lassen Grass Valley; Lassen Forest, Grass Valley 1699 Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  UCD86011  Koeleria macrantha L. Whitney 1935-6-24 s.n. Lassen Squaw Valley. Comment
  CAS-BOT-BC271327  Koeleria pyramidata Louella Bass 1973-6-3 92 Lassen Elysian Valley 1325 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
  SEINET14188959 Image available Lamium amplexicaule L. L. Stitt 1984-5-25 s.n. Lassen Susanville Comment
  CHSC99283  Lasthenia glaberrima Lowell Ahart; John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, along a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS114637  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-20 14901 Lassen Sides of a vernal pool, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS89760  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout 0.5 mi s of the Modoc County Line (Big Valley, Pit River Watershed); Big Valley, Pit River Watershed 1249 Comment
  POM29621  Lathyrus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC727153  Lathyrus brownii A. A. Heller 1938-6-4 15147 Lassen 1 mi e Fredonyer Pass (e of Westwood) 1706 Comment
  CHSC92742  Lathyrus nevadensis var. nevadensis L. P. Janeway 2005-7-3 8451 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  JEPS108558  Lathyrus nevadensis var. nevadensis L. P. Janeway 2005-7-3 8451 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout 1536 Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CHSC59691  Layia glandulosa Mary Meyer 1980-4-24 Lassen Shaffer Mt. 1432 Comment
  JEPS87525  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
  OBI76935  Layia glandulosa Anthony Baniaga 2011-6-11 332 Lassen Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21 1623 Comment
  UCD55163  Layia glandulosa Ellen Dean 2006-5-15 3051 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  CAS-BOT-BC321494  Layia glandulosa John Thomas Howell 1962-6-19 37888 Lassen Sagebrush flat, 3 mi S of Hallelujah Junction 1524 Comment
  CAS-BOT-BC321495  Layia glandulosa M. S. Taylor 1982-5-29 4571 Lassen 500 yds NE of the jct of Hwy 70 with Hwy 395 at Hallelulia Jct, ca 23 mi N of Reno. 1524 Comment
  SEINET11807266  Layia glandulosa N. H. Holmgren, Holmgren, P. K. 1980-1 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  HSC95315  Lemna minuta Gordon Leppig, Tony LaBanca 1997-6-29 526 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA318598B  Lemna turionifera Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 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
  CAS-BOT-BC89722  Lepidium latifolium Gary Schoolcraft 1984-7-31 1330 Lassen Along Highway 395 about 1 mile north of Ravendale Fire Station. 1615 Comment
  CAS-BOT-BC89720  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen On east side of road, Highway 395 to Lichtenfield, 4.7 miles south of Ravendale, Madelaine Plains. Comment
  CDA3793  Lepidium latifolium Lee Wheeler 1962-8-15 Lassen Ravendale area. 0 Comment
  RSA170322  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen On east side of road, Hwy 395 to Litchfield, 4.7 mi S of Ravendale, Madelaine Plains. Comment
  CHSC110310  Lepidium perfoliatum L. P. Janeway; B. Castro 2012-7-2 10926 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC91205  Lepidium perfoliatum Lowell Ahart; John Dittes 2005-6-2 11920 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS95731  Lepidium perfoliatum Vernon H. Oswald and L. Ahart 1995-6-19 6899 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  CAS-BOT-BC12815  Lepidium perfoliatum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. Comment
  SEINET10448293  Lepidium perfoliatum Mary Susan Taylor 1982-5-29 Taylor 4565 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
  POM74199  Leptosiphon harknessii Marcus E. Jones 1897-7-2 10394 Lassen Susanville 1524 Comment
  RSA702599  Leptosiphon harknessii L. P. Janeway 2004-7-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  UC1134623  Leucocrinum montanum A. Simontacchi 1940-5-10 687 Lassen 6.0 mi wnw Burgess Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1483858  Leucocrinum montanum G. Schoolcraft 1979-5-3 17 Lassen about 1 mi s Ravendale (at intersection of Horse Lake Road and Hwy 395) 1615 Comment
  HSC63766  Leucocrinum montanum Teresa Prendusi 1980-5-6 Lassen W side of SR 395, 0.25 mi. from old gas station 1616 Comment
  OBI48150  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  JEPS94607  Lewisia nevadensis Vernon H. Oswald and Lowell Ahart 1997-5-27 8523 Lassen 3.6 mi ne Hwy. 139 (along draw crossing Forest Route 38N04 (between Hwy 139 between Willow Creek Guard Station and Coyote Flat)); Coyote Flat draw 1731 Comment
  UC614395  Lewisia nevadensis L. Constance 1938-6-11 2326 Lassen 5 mi sw Susanville 1371 Comment
  RSA152594  Leymus cinereus I. L. Wiggins, Dorothy Wiggins 1961-6-11 16336 Lassen On hillside 13.5 mi. of Susanville Comment
  UCD64227  Leymus cinereus Beecher Crampton 1960-6-18 5718 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  RSA126619  Leymus condensatus A. Simontacchi 1940-6-30 946 Lassen Halls Flat: 8.6 miles W. of Burgees Spring 1700 Comment
  RSA129541  Leymus condensatus C. W. Hanks 1934-8-18 57 Lassen Sierraville; N. W. part of Upper Long Valley 1616 Comment
  CDA34729  Leymus triticoides 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 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 air miles southeast of Adin. Comment
  RSA299171  Leymus triticoides J. T. Howell 1974-7-9 50467 Lassen Susanville 1296 Comment
  UCD65616  Leymus triticoides L. Whitney 1933-8-1 s.n. Lassen Lassen National Forest. Near Sheepshead. 1889 Comment
  UCD86642  Leymus triticoides J. Earl Coke 1931-6-1 s.n. Lassen Lassen County. 1524 Comment
  CAS-BOT-BC130513  Lilium John Thomas Howell 1976-7-19 51979 Lassen On Gold Run Creek southwest of Susanville 1386 Comment
  RSA508635  Lilium washingtonianum Mrs. R. M. Austin 1880-7-20 s.n. Lassen Mount Dyer [SW edge of Lassen Co.] Comment
  UCD116467  Limnanthes alba subsp. alba W. W. Robbins 1926-4-17 535 Lassen Grass Valley. Comment
  CHSC112419  Limosella acaulis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18753 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
  CHSC66264  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1996-6-24 7853 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  UCR227639  Limosella acaulis R. F. Thorne, Larry E. DeBuhr 1975-8-22 47206 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC52823  Linanthus bolanderi M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. Comment
  JEPS58449  Linanthus harknessii W. L. Jepson 1918-8-5 7814 Lassen near South Fork Peak 1645 Comment
  CHSC92715  Linanthus pungens L. P. Janeway; B. Castro 2005-7-10 8479 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
  UC1130238  Linum lewisii A. Simontacchi 1940-6-8 841 Lassen 4.1 mi e of Halls Flat Ranger Station (Lassen National Forest); Lassen National Forest 1737 Comment
  CHSC80221  Linum lewisii var. lewisii Jeanne Boze 1981-6-12 110 Lassen Along road to 5 corners, 3.1 from Eagle Lake Field Station. 1737 Comment
  JEPS117582  Linum lewisii var. lewisii Lowell Ahart, John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  RSA0035912  Linum lewisii var. lewisii Lowell A. 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
  POM111784  Lipocarpha micrantha C. C. Bruce 1897-1 s.n. Lassen Susanville? Comment
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Jan 23 2011
  UC773886  Lithophragma glabrum L. R. Short 1936-4-28 S- 336 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  CAS-BOT-BC428416  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen Between Susanville and Janesville Comment
  CHSC21169  Lithophragma tenellum M. S. Taylor 1974-5-4 228 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC29956  Lithophragma tenellum Robin L. Ondricek 1978-5-25 25 Lassen 150 yds N of cafeteria at Eagle Lake Field Station. 1554 Comment
  UC131185  Loeflingia squarrosa var. artemisiarum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  UCR73173  Lomatium G. L. Webster 1989-5-13 7718 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  SEINET8588544  Lomatium austiniae 2015-5-20 NV 030 -1058 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line 1460 Comment
  JEPS15825  Lomatium bicolor var. leptocarpum M. S. Baker and Franklin P. Nutting 1894-6-20 Lassen near Bieber (Big Valley); Big Valley Comment
  RSA27417  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  POM78757  Lomatium dissectum var. multifidum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  JEPS125805  Lomatium foeniculaceum subsp. macdougalii William Harnach 2010-6-8 1243 Lassen 2 miles west of the California Nevada state line, north side of Fort Sage Road, northeast of Doyle, CA. Comment
  CHSC71064  Lomatium macrocarpum Vernon H. Oswald; Lowell Ahart 1998-5-22 9110 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
  UCR183199  Lomatium macrocarpum Jim Andre, G. L. Clifton 1993-6-2 7717 Lassen Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns 1243 Comment
  SEINET10545797  Lomatium macrocarpum David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17756 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  POM78183  Lomatium nevadense Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  CHSC93705  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2005-6-1 11847 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
  CHSC99119  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2008-6-19 14899 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS96076  Lomatium nevadense var. nevadense Vernon H. Oswald and Lowell Ahart 1996-6-24 7862 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows, ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of the meadow ca. 0.4 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC27618  Lomatium nevadense var. parishii Robert A. Schlising 1978-6-8 3287 Lassen E of Eagle Lake and north of Murrers Upper Meadow. 1536 Comment
  UC1123086  Lomatium nevadense var. parishii A. Simontacchi 1940-5-14 709 A Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD127700  Lomatium nevadense var. parishii Grady L. Webster 1989-5-13 7718 Lassen 2.5 mi east of Beckworth Pass. Comment
  UC1123088  Lomatium nudicaule A. Simontacchi 1940-6-13 857 Lassen 3.3 mi. w.-s.w. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UC1167732  Lomatium nudicaule Peter H. Raven with Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 mi. e. Westwood (on State Hwy. 36) Comment
  CHSC60710  Lomatium piperi Vernon H. Oswald; Lowell Ahart 1993-6-3 5471 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  JEPS25531 Image available Lomatium ravenii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7145 Lassen 2 mi. s. Ravendale 1615 Comment
  NY406056  Lomatium ravenii L. Constance 1959-6-14 3672 Lassen One mile south of Ravendale 1463.0 Comment
  UC1187686 Image available Lomatium ravenii Tracey and Viola Call 1961-5-30 2048 Lassen ca. 2 mi. s. Ravendale 1463 Comment
  UC1479583 Image available Lomatium ravenii Gary Schoolcraft 1980-5-9 232 Lassen e Sierra Ordnance Depot (Herlong) (near CA-NV State line); e of Sierra Ordnance Depot (Herlong) 1219 Comment
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Oct 26 2017
  UC1559671 Image available Lomatium ravenii Gary Schoolcraft 1988-6-6 1808 Lassen ca. 3 mi. s.e. Ravendale 1615 Comment
  UCR267419  Lomatium ravenii Jim Andre, Glenn L. Clifton 1993-6-14 30002 Lassen northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville 1646 Comment
  POM78599  Lomatium triternatum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC29875  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-6 31 Lassen Ca. 1 mi from ELFS where the power lines cross the road. 1572 Comment
  SEINET11131289  Lomatium triternatum var. triternatum J. A. Young 1982-6-9 s.n. Lassen Mayer's Ranch, Adin 1372 Comment
  RSA0049611  Lomatium vaginatum Dean Wm. Taylor 2012-6-7 21232 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  UC1390555  Lomatium vaginatum Maynard Moe Aug 1970 278 Lassen about 0.6 mi S of Madeline (Hwy 395) 1615 Comment
  SEINET4677076  Lomatium vaginatum Arnold Tiehm, Margaret Williams; Gary Schoolcraft 1986-5-12 10345 Lassen 6.7 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert.; 0 1417 Comment
  UC1249270  Lotus corniculatus Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8474 Lassen 1 mi se Milford (near Honey Lake, 26 mi se of Susanville) 1310 Comment
  UC15657  Lotus nevadensis var. nevadensis Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  RSA253250  Lotus unifoliolatus A. A. Heller 1938-6-23 15199 Lassen Slope east of Fredonyer Pass. 1646 Comment
  POM253309  Lotus unifoliolatus A. A. Heller 1938-7-28 15300 Lassen Just east of Westwood. Comment
  RSA519408  Lupinus Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
  RSA622143  Lupinus B. J. Cox, Paul Gallian 1971-6-2 2590 Lassen Approx. 6 mi. S. of Susanville at Jct. of U.S. Hwy 395 and Calif. Hwy 36 to Susanville, near Johnstonville. 1311 Comment
  CHSC91929  Lupinus andersonii L. P. Janeway; B. Castro 2005-7-10 8482 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  CHSC27936  Lupinus angustiflorus M. S. Taylor 1974-6-20 314 Lassen Abundant around Crater Lake, Lassen National Park. Comment
  UC15769  Lupinus angustiflorus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CHSC30579  Lupinus arbustus Sori H. Shad 1970-7-9 45 Lassen Found at edge of Dean's Meadow. 1828 Comment
  CHSC30623  Lupinus arbustus John Steiner 1975-7-10 21 Lassen Road 5a, .4 mi N. Mahogany Lake. 2072 Comment
  CHSC5286  Lupinus arbustus 1944-7-19 Lassen Juniper Lake. 2055 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
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  UC1542916  Lupinus argenteus G. Schoolcraft 1987-9-1 1773 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC208734  Lupinus argenteus var. heteranthus Walter Knight; Irja Knight 1981-5-20 4116 Lassen 27 miles S of Alturas Comment
  CAS-BOT-BC208735  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 215 Lassen Sheepshead, Lassen Forest 1500 Comment
  CAS-BOT-BC208738  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21510 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CAS-BOT-BC208739  Lupinus argenteus var. heteranthus Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen In lava country, 11.7 miles south of Ravendale, on U.S. 395 Comment
  CAS-BOT-BC208757  Lupinus argenteus var. heteranthus Doris Kildale Gillespie 1930-5-13 9372 Lassen Between Susanville and Janesville. Comment
  CAS-BOT-BC208760  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47444 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208762  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-7-17 47699 Lassen Park Highway, Summit Lake Camp - Lassen Volcanic National Park Comment
  CAS-BOT-BC208766  Lupinus argenteus var. heteranthus Beeson 1927-7-11 21470 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  JEPS114624  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2008-6-19 14873 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  NY736927  Lupinus argenteus var. heteranthus J. T. Howell 1974-7-8 50461 Lassen Susanville 1295 Comment
  SBBG3562  Lupinus argenteus var. heteranthus H. and M. Dearing 1938-6-30 2228 Lassen Poison Lake, 40 mi W of Susanville 1219 Comment
  UC585203  Lupinus argenteus var. heteranthus E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1757 Lassen e Red Rock; e of Red Rock 1615 Comment
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Nov 4 2011
  CAS-BOT-BC208837  Lupinus argenteus var. meionanthus Clare B. Hardham 1969-8-28 s.n. Lassen West of Janesville - Sierra Nevada Comment
  SEINET10484833  Lupinus aridus Billy Joe Cox 1971-6-11 Cox 3190 Lassen 6 mi w. Of susanville on calif. Hwy 36; in volcanic soil; association with Pinus ponderosa forest. 1615 Comment
  SEINET2063029 Image available Lupinus aridus subsp. aridus Arnold Tiehm, Jan Nachlinger, Gary Schoolcraft 1984-6-25 8823 Lassen Rodeo Flat, 2.7 miles W of the state line on Buckhorn Road from Ravendale to Hwy 81. Comment
  HSC14808  Lupinus caudatus M. T. Milligan 1964-8-6 207 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA11957  Lupinus caudatus Elmer I. Applegate 1923-9-30 4032 Lassen Doyle. Comment
  RSA8059  Lupinus caudatus H. A. Barker 1927-7-15 806 Lassen Desert east of Beckwith near highway. Comment
  RSA616275  Lupinus caudatus David B. Dunn, Jeffrey Huber 1971-6-2 17748 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, junction of US 395 and California 70. Comment
  SEINET10936587  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11914 Lassen Collected at jct of hwy 395 and 36 near johnstonville. 6 Mi. E of susanville. Open valley with sparse artemesia tridentata, arid grassland well below Woodland. Comment
  RSA339168  Lupinus confertus Margaret J. Williams 1983-7-31 s.n. Lassen Roadside near Janesville. 1280 Comment
  JEPS126477  Lupinus holosericeus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-28 CA 350 -068 Lassen Take 395 to Ravendale. Follow county road 527 to Buckhorn Byway. Follow for approximately 15 miles then turn right at the south end of Pilgrim Lake. Drive past two gates and through Painter's Creek. About 500 meters out of the creek on Painter's Flat. Comment
  SEINET10488723  Lupinus lepidus Williams 1983-7-31 Williams 126 Lassen Roadside near janesville. Sandy soil with sagebrush and bitterbrush. Great Abundance 1280 Comment
  JEPS65081  Lupinus lepidus var. confertus W. L. Jepson Aug. 1918 7798 Lassen Raker Ranch near Buntingville; Raker Ranch naer Buntingville 1219 Comment
  NY747197  Lupinus lepidus var. confertus R. F. Hoover 1940-10-1 4653 Lassen Janesville Comment
  UC1138211  Lupinus lepidus var. lobbii George A. Fischer and Irwin H. Johnson 1933-7-12 F 203 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  CHSC91526  Lupinus lepidus var. sellulus L. P. Janeway 2005-7-4 8474 Lassen High Cascade Range. Along Road 33N02 in Windy Gap; meadow between Harvey Valley and Grays Valley. 1696 Comment
  UC126929  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  UC1609421  Lupinus leucophyllus Vernon H. Oswald and Lowell Ahart 1993-6-28 5607 Lassen Rd 35N04 n Hwy 44 (nw edge of valley, ne of Poison Lake); Harvey Valley, Aspen Well 1725 Comment
  NY747428  Lupinus microcarpus G. Schoolcraft 1984-7-11 1291 Lassen About 5 miles south of Madeline along Highway 395 1615 Comment
  UC199306  Lupinus microcarpus var. microcarpus Franklin P. Nutting Lassen Dixey Mts. South side Comment
  UC138031  Lupinus onustus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS118457  Lupinus polycarpus Lowell Ahart, John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  HSC28314  Lupinus sellulus var. lobbii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19159 Lassen 3 mi. N of Westwood Comment
  SEINET10490263  Lupinus subvexus var. transmontanus David B. Dunn 1956-7-3 Dunn 11925 Lassen Collected on roadside among volcanic rocks. Along hwy 395, 5.5 mi s of likely, Before dropping into valley. Color lavender. Sagebrush common. Comment
  RSA69483  Luzula comosa F. W. Peirson 1926-6-22 6826 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake Valley. Comment
  CDA18272  Machaeranthera canescens G. D. Barbe 1974-8-2 1937 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  POM298318  Madia citrigracilis D. D. Keck 1930-7-23 949 Lassen Susanville. 1280 Comment
  UC1567356  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen intersection of Highway 139 and A2 s Adin 1341 Comment
  SEINET11601315 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  CAS-BOT-BC343693  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia Comment
  RSA719892  Madia elegans subsp. elegans Michael A. Vincent, K. Levings 2006-7-29 12912 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  RSA518406  Madia elegans subsp. elegans George K. Helmkamp 1990-9-23 A- 6 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  JEPS88219  Madia exigua Vernon H. Oswald and Lowell Ahart 1996-6-17 7806 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  CAS-BOT-BC343056  Madia gracilis John Thomas Howell 1973-7-10 49781 Lassen Fredonyer Pass 1737 Comment
  CHSC106081  Madia gracilis Lowell Ahart; John Dittes 2010-7-31 17006 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
  CHSC44881  Madia gracilis Lowell Ahart; John Thomas Howell 1974-7-9 525 Lassen Along the edge of Eagle Lake Road, about 3 miles north-west of Susanville. 1584 Comment
  JEPS88244  Madia gracilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7783 Lassen bank on n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (trail accessed at Devil's Corral Trailhead located off Hwy, ca. 7 mi w of Susanville); Modoc Plateau 1432 Comment
  CHSC64758  Malacothrix torreyi Vernon H. Oswald 1995-5-24 6786 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
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CHSC4978  Malva neglecta R. Clicquennoi 1967-6-23 11 Lassen In a large vernal pool area 1/4 mi n of Eagle Lake Biology Station, e central side of Eagle Lake. 1554 Comment
  JEPS124803 Image available Malva neglecta Lynne C. Carter 1967-7-11 82 Lassen 1.1 mile south of Millford on HWY 395, west of Honey Lake. Comment
  UC18838  Malvella leprosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3330 Lassen near the hot springs Honey Lake Valley 1219 Comment
  CHSC58832  Marsilea oligospora Vernon H. Oswald; Lowell Ahart 1992-7-16 5126 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
  CHSC4807  Marsilea vestita R. Carter 1967-7-7 579 Lassen Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  JEPS114749  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  CHSC29877  Matricaria occidentalis Robin L. Ondricek 1978-8-26 127 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  RSA715988  Medicago lupulina L. Ahart, John Dittes 2005-6-2 11966 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CHSC106171  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  JEPS117562  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS29743  Mentzelia albicaulis Rimo Bacigalupi and L. R. Heckard 1962-5-28 8498 Lassen 2.7 mi n Milford (along U.S. highway 395) 1219 Comment
  JEPS124817 Image available Mentzelia albicaulis N. L. Rechen 1964-7-1 73 Lassen 1 mile north of Susanville. H. 139 Comment
  CHSC91323  Mentzelia congesta Lowell Ahart; John Dittes 2005-6-1 11887 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
  HSC31748  Mentzelia congesta Donald Spalinger 1974-5-16 61 Lassen 300 yds. S of intersection of Rd. A3 and H 395 1250 Comment
  CHSC68893  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1997-6-24 8603 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
  UC1121687  Mentzelia dispersa A. Simontacchi 1940-6-5 818 Lassen 8 m wnw Harvey Valley Ranger Station; Halls Flat Quad, Lassen National Forest 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
  SD130462  Mentzelia dispersa John Thomas Howell, Gordon H. True 1973-8-1 50204 Lassen The Sierra Nevada. Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville. 2164 Comment
  CHSC68851  Mertensia ciliata Vernon Oswald; Lowell Ahart 1997-6-24 8617 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
  NY1084278  Mertensia oblongifolia M. J. Williams 1986-5-14 86- 39 --1 Lassen 1.5 rd mi W of turn to Dodge Reservoir, on rd from Tuledad Canyon to Ravendale. 1706.9 Comment
  CAS-BOT-BC231081  Mertensia oblongifolia Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-14 86- 39 -1 Lassen 1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale 1706 Comment
  CHSC61178  Micranthes aprica Vernon H. Oswald; Lowell Ahart 1993-5-12 5373 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in the forest. 1737 Comment
  SD8330  Micranthes odontoloma Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
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Apr 29 2013
  CHSC6266  Micranthes oregana M. West 1946-7-12 Lassen Stephens Ranch. 1905 Comment
  CAS-BOT-BC322657  Microseris laciniata G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area south of TulePatch Spring 1463 Comment
  CHSC99239  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  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
  POM34993  Microseris nutans Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 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
  RSA122924  Microsteris gracilis subsp. humilis L. R. Short 1936-5-7 S- 343 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  RSA104221  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9801 Lassen 4 miles S of Ravendale. 1280 Comment
  NY963937  Microsteris gracilis var. humilior V. E. Grant 1956-5-18 9802 Lassen About 8 miles south of Madeline 1280 Comment
  UC1778584  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen Moist clayey soil. East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track and wet ditch. 1749 Comment
  CHSC117277  Mimulus guttatus Lowell Ahart; John Dittes 2016-7-15 21224 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
  UC1012180  Mimulus guttatus Francis W. Pennell 1940-6-10 25778 Lassen 3 mi e Westwood (Route 36) 1584 Comment
  UC27139  Mimulus layneae M. S. Baker and Frank Nutting Lassen Big Valley Comment
  JEPS80675  Mimulus microphyllus L. R. Heckard and T. I. Chuang 1981-6-10 5527 Lassen 2.3 mi w Nubiebar (along route 299) 1341 Comment
  UC725552  Mimulus microphyllus A. A. Heller 1941-6-26 16232 Lassen ridge w Nieubieber Comment
  HSC22944  Mimulus nanus var. mephiticus John Pratt 1970-6-27 47 Lassen 0.5 mi. E of Turtle Head 1220 Comment
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Jul 9 2013
  JEPS85744  Mimulus nanus var. mephiticus Roy E. Buck, Robert A. Price 1988-6-26 1032 Lassen ca. 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  LA38975  Mimulus nanus var. mephiticus Frank W. Peirson; 1926-6-24 6853 Lassen Madeline Plain Comment
  RSA422243  Mimulus nanus var. mephiticus Christopher Davidson 1975-6-7 2765 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1537591  Mimulus nanus var. mephiticus Gordon H. True Jr. 1936-6-26 548 Lassen 2 mi e Eagle Lake (head of creek); Willow Creek 1584 Comment
  UC27047  Mimulus nanus var. mephiticus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC886329  Mimulus pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen lava beds ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  RSA536391  Mimulus pygmaeus Beth Corbin 1991-6-10 621 Lassen Pine Creek at Little Harvey Valley 8 miles NE of USFS Bogard Work Center. 1700 Comment
  CAS-BOT-BC221781  Monardella odoratissima L. P. Janeway 1990-7-4 3771 B Lassen Ca 0.9 mi NE of Meadowview [Mountain View] Peak 1981 Comment
  CHSC12413  Monardella odoratissima subsp. pallida Anne Linda Brisk 1969-7-10 42 Lassen 6 mi from ELBS on Road 5A. 1889 Comment
  RSA18163  Monardella odoratissima subsp. pallida Carl B. Wolf 1929-9-1 3782 Lassen Mt. Lassen Nat l Park, between Grassy Lake and Snag Lake. Comment
  UC25488  Monardella odoratissima subsp. pallida M. S. Baker and Frank Nutting 1894-7-28 Lassen mts. s Eagle Lake Comment
  CHSC64782  Monolepis nuttalliana Vernon H. Oswald 1995-5-31 6808 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC91315  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
  CHSC4797  Montia chamissoi R. Carter 1967-7-7 583 Lassen Collected at W end of reservoir in open wet meadow. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  CAS-BOT-BC444691  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail. 1905 Comment
  CHSC108024  Montia linearis Lowell Ahart; John Dittes 2011-6-20 17476 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  JEPS118274  Montia linearis Lowell Ahart, John Dittes 2011-6-20 17476 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SBBG69755  Montia linearis E. Rockwell -Jun-1925 782 Lassen near Honey Lake 1219 Comment
  UCD86528  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UCD86548  Muhlenbergia asperifolia John Thomas Howell; Gordon H. True 1973-8-1 50147 Lassen Roadside in Mountain Meadows east of Westwood. 1554 Comment
  CAS-BOT-BC260596  Muhlenbergia filiformis George W. Gillett 1957-7-28 940 Lassen Lassen Volcanic National Park. Near W end of Widow Lake 2072 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
  UC163592  Muhlenbergia filiformis Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  RSA0115568  Muhlenbergia richardsonis Jim M. Andre, G. Clifton 1993-6-11 33424 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale. 1545 Comment
  UC1024739  Muhlenbergia richardsonis Leo Whitney 1933-8-3 3042 Lassen ca 8 mi nw Eagle Lake (on open flats); Lassen National Forest, Slate Creek 1920 Comment
  UCD86950  Muhlenbergia richardsonis R. M. Love 1940-7-5 s.n. Lassen Madeline Plains. Comment
  CAS-BOT-BC275156  Muhlenbergia richardsonis George W. Gillett 1957-7-22 871 Lassen Lassen Volcanic National Park. Snag Lake, S shore 1850 Comment
  CHSC7657  Muilla transmontana Beverley J. Wise 1969-5-3 145 Lassen 4.7 mi. east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1615 Comment
  JEPS107463  Muilla transmontana Lowell Ahart, John Dittes 2005-6-1 11855 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1567382  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen Susanville NW corner of Secret Valley near Karlo. 1356 Comment
  UC1609242  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-7-8 5651 Lassen 1.9 mi n ow Hwy 44, on se edge of Poison Lake (Pittville Road) 1709 Comment
  UC1951072  Myosurus apetalus Debra Valov 2009-4-26 2009019 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC1608993  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-5-12 5392 Lassen 0.6 mi e Shasta County Line (n side of Hwy 44, between Old Station and Poison Lake) 1645 Comment
  SEINET5338208  Myosurus aristatus M. J. Williams, G. Schoolcraft; A. Tiehm 1986-5-14 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck flat to Ravendale. 0.1 mi W of Calif-Nev line. Comment
  CHSC107321  Myosurus minimus Lowell Ahart; John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC68760  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1997-5-27 8518 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy.139. 1682 Comment
  JEPS120862  Myosurus minimus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18726 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
  RSA125293  Myosurus minimus Peter H. Raven 1958-6-17 13285 Lassen Along United States Hwy 395, 1.9 miles S of Ravendale. Comment
  RSA323647  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  HSC13476  Myriophyllum verticillatum Fred J. Kindel 1955-7-8 Lassen Mt. Meadows Reservoir, Westwood Comment
  CHSC7683  Nama demissa Berverly J. Wise 1969-5-18 48 Lassen 7.7 mi. E. of Susanville on Co. Rd. 215 on the south side of the road. 1341 Comment
  CHSC14186  Nama densa M. S. Taylor 1974-7-12 305 Lassen Scattered around Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  POM126780  Nama densa Franklin P. Nutting s.n. Lassen Eagle Lake. Comment
  UC735061  Nama densa var. densa Lincoln Constance 1946-7-3 3098 Lassen w edge of Eagle Lake at Spauldings Eagle Lake; w edge of Eagle Lake at Spaldings 1706 Comment
  UC971978  Nama lobbii Annetta Carter 1946-8-19 1777 Lassen crest of ridge ten mi ne Susanville; ne of Susanville 1676 Comment
  RSA508616  Narthecium californicum Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  UCD87411  Nassella cernua T. S. Brandegee 1892-7-1 s.n. Lassen Susanville. Comment
  HSC95152  Nasturtium officinale Gordon Leppig 1998-7-12 959 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC9067  Navarretia Silas Carr 1970-6-24 126 Lassen E. edge of road entering N. portion of Murrers Meadow. Comment
  CHSC34341  Navarretia breweri A. W. Harvilik 1967-6-23 45 Lassen Collected on hyway 139 ca. 6 mi n of Susanville. Comment
  CHSC89734  Navarretia breweri L. P. Janeway 2004-6-26 8143 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS94539  Navarretia breweri Vernon Oswald and Lowell Ahart 1997-6-24 8605 .2 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 (29N10)); Diamond Mountain, Forest Road 29N43 1655 Comment
  SJSU8608  Navarretia breweri P. L. Billings 1965-7-12 Lassen by Hwy 139 5 mi NE of Susanville 1158 Comment
  CHSC27643  Navarretia capillaris George Deniso 1978-7-21 98 Lassen E end of Mahogany L., S of Eagle L. Near E shore of lake. 2060 Comment
  CHSC4887  Navarretia capillaris Bill Wilson 1967-7-5 41 Lassen Collected at Eagle Lake Biological Station. 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  CHSC6208  Navarretia divaricata W. Vinyard 1946-6-12 Lassen Eagle Lake. Willow Creek. 1371 Comment
  UC1037269  Navarretia divaricata Leo Whitney 1934-7-10 1773 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Harvey Valley 1737 Comment
  UC773937  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spring Experiment Range Lassen Forest 1844 Comment
  UC1124160  Navarretia intertexta A. Simontacchi 1940-6-30 904 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  UCD32670  Navarretia intertexta Beecher Crampton 1954-7-6 2072 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  CHSC116082  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2015-7-13 20303 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
  CHSC117215  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2016-6-7 20995 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  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
  JEPS126569  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2016-6-7 20995 Lassen On the west 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
  CHSC23861  Navarretia intertexta subsp. propinqua A. W. Harvilik 1967-7-7 38 Lassen Collected on hwy. 139 ca. 6 mi from Susanville. 1463 Comment
  CHSC58848  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5111 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. On the bed of the creek on the bed of the reservoir. Blue-flowered plants collected at Long Lake. 1691 Comment
  JEPS106521  Navarretia intertexta subsp. propinqua L. P. Janeway 2004-6-26 8144 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
  UC1594648  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5101 Lassen 1.2 mi se County Rd. A21 (Long Lake on the s of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  CHSC4760  Navarretia leptalea R. Carter 1967-7-14 615 Lassen Roadside on N side of rd. Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  UC909068  Navarretia leucocephala subsp. bakeri G. L. Stebbins Jr. 1949-8-6 4003 b Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  HSC82246  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1980-7-6 5986 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS127174  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2016-7-15 21213 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET2440301  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2006-7-2 06 -138 Lassen Lassen Nat. Forest, Long Lake vicinity. Off Hwy 44 at mile marker 20.74 (just E of jct between 44 and county road A21). Along shore between trees and water's edge, particularly at point where spur from Hwy 44 connects with road next to lake.; 0 1736 Comment
  UC1137773  Navarretia linearifolia subsp. linearifolia August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest, Black's Mtn 1706 Comment
  CHSC117190  Nemophila pedunculata Lowell Ahart; John Dittes 2016-6-7 21010 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valleuy Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CHSC99497  Nemophila pedunculata Lowell Ahart; John Dittes 2008-6-20 14918 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0043177  Nemophila pedunculata L. Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  UC1137710  Nemophila pedunculata L. R. Short and Wm. Gansberg 1936-6-8 S- 393 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1743 Comment
  UC604678  Nemophila pedunculata Farris Farris 1935-5-20 Lassen five mi sw Susanville; sw of Susanville 1341 Comment
  CHSC44642  Nestotus stenophyllus J. D. Jokerst 1983-5-30 1795 Lassen Ca. 1.5 miles north of the north edge of Eagle Lake ca. 1.0 mile N of Eagle Lake Rd 50 meters west of Highway 139. Comment
  CHSC13791  Nicotiana attenuata Anne Linda Brisk 1969-7-10 45 Lassen 1/4 mi N of ELBS. 1554 Comment
  UC1037191  Nicotiana attenuata Leo Whitney 1933-8-22 1500 Lassen base of Harvey Mountain; Lassen National Forest 1889 Comment
  UC1191768  Nicotiana attenuata Verne Grant and Irving Schneider 1947-8-1 8235 Lassen e end Tule Lake Comment
  HSC4506  Nitrophila occidentalis Fred J. Kindel 1955-7-14 Lassen Wendel Comment
  CDA18261  Nothocalais alpestris G. D. Barbe 1974-8-2 1923 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  HSC68183  Nothocalais troximoides J. P. Smith, J. O. Sawyer 1971-5-23 4658 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  SEINET10729606  Nuphar lutea subsp. polysepala Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 845 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. T31N R7E S26 SW 1/4. 1981 Comment
  HSC22878  Oenothera deltoides John Pratt 1970-6-14 16 Lassen East of Janesville Comment
  JEPS124824 Image available Oenothera deltoides B. Wenegrat 1969-7-8 52 Lassen off H. 395 8 miles S of Milford. Comment
  SEINET10453107  Oenothera deltoides Mary Susan Taylor 1982-6-12 Taylor 4652 Lassen T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft. 1280 Comment
  CHSC36283  Oenothera deltoides subsp. piperi M. S. Taylor 1982-6-12 4652 Lassen Both sides of Hwy 395, ca. 1 mi n of Milford. 1280 Comment
  JEPS29737  Oenothera deltoides subsp. piperi Rimo Bacigalupi and L. R. Heckard 1962-5-28 8492 Lassen along US Hwy 395 10 mi s Milford 1219 Comment
  UC66124  Oenothera deltoides subsp. piperi P. B. Kennedy 1901-6-10 Lassen R.R. station Constantia Comment
  SJSU10936  Oenothera deltoides subsp. piperi G. R. Ostrander 1965-7-12 70 Lassen by Hwy 395, 5 mi N of Doyle 1158 Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 Comment
  UC874023  Oenothera flava subsp. flava C. L. Hitchcock 1940-5-26 6642 Lassen overflow of river 1 mi w Bieber; Pitt River Comment
  RSA0054993  Oenothera tanacetifolia James R. Shevock 1972-5-20 1817 Lassen S. of Ravendale, HIghway 395. 1371 Comment
  CAS-BOT-BC350039  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen About a mile east of Westwood 1524 Comment
  CHSC66716  Oreostemma alpigenum var. andersonii Vernon H. Oswald; Lowell Ahart 1996-8-1 8121 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of West-wood. 1737 Comment
  UC2027324  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen National Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mountain quadrangle 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
  JEPS26569  Orobanche corymbosa subsp. corymbosa Lauramay T. Dempster 1961-6-17 1676 Lassen About 8 miles north of Karlo Road junction with Highway 395. Comment
  CAS-BOT-BC499907  Orobanche fasciculata R. J. Dobbs 1928-5-23 s.n. Lassen Strawberry Pek switchback 1219 Comment
  UC718016  Orthocarpus bracteosus David D. Keck 1944-7-8 5445 Lassen 2 mi e Westwood (in meadow leading to Mountain Meadows Reservoir); Sierra Nevada, mdw leading to Mountain Meadows Reservoir 1524 Comment
  POM44324  Orthocarpus cuspidatus subsp. copelandii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  SEINET3836941 Image available Orthocarpus cuspidatus subsp. copelandii Marcus E. Jones 1897-6-28 Lassen Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CHSC23505  Orthocarpus cuspidatus subsp. cryptanthus Wayne O. Baum 1970-7-7 70 -2 Lassen Top of Gallatin Peak. 2117 Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  UC1137684  Orthocarpus cuspidatus subsp. cryptanthus L. R. Short and J. Warren 1936-6-23 S- 453 Lassen Burgess Spr. Exp. Range; Lassen Forest, Burgess Spr. Exp. Range 1804 Comment
  UC1523713  Orthocarpus cuspidatus subsp. cryptanthus Gary Schoolcraft 1981-7-6 616 Lassen near top Goodrich Mtn.; near top of Goodrich Mtn. 1828 Comment
  UC773854  Orthocarpus cuspidatus subsp. cryptanthus L. R. Short and J. Warren 1936-6-23 S- 453 Lassen Burgess Spr. Exp. Range; Lassen Forest, Burgess Spr. Exp. Range 1743 Comment
  HSC63830  Orthocarpus cuspidatus subsp. cryptanthus Teresa Prendusi 1980-7-8 Lassen Grasshopper Ridge, 37 mi. N of Susanville off Hwy. 139, 5 mi. E of Grasshopper Valley 1738 Comment
  RSA712893  Orthocarpus lacerus L. P. Janeway 2005-7-3 8454 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  SEINET178349  Osmorhiza berteroi Marcus E. Jones 1897-6-28 Lassen Diamond Mt., Susanville, Perkin's Ranch. 1829 Comment
  UC1137732  Osmorhiza occidentalis L. R. Short and J. Warren Jun 9 1936-Jul 3 1936 S- 403 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1844 Comment
  SD7889  Oxyria digyna Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
  UC125352  Oxytheca dendroidea subsp. dendroidea T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UC768463  Oxytheca dendroidea subsp. dendroidea R. F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  CHSC5217  Packera multilobata A. Santos 1946-6-17 Lassen Eagle Lake. Mr. Fredonyer Rd. 2072 Comment
  JEPS25526  Packera multilobata Rimo Bacigalupi with Lincoln Constance 1959-6-16 7139 Lassen beside U.S. Highway 395 one fourth mi s of junction of road to Smoke Creek 1341 Comment
  UC485217  Packera streptanthifolia Mrs. Austin 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC10387  Paeonia brownii J. T. Howell; Gordon H. True; Margaret Williams 1973-5-12 49158 Lassen In cemetary, Janesville 1295 Comment
  HSC63735  Paeonia brownii Teresa Prendusi 1980-4-22 Lassen Along State Rte. 139, 0.5 mi. NE of Susanville 1280 Comment
  UC1131606  Panicum capillare H. S. Yates 1936-8-11 6073 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  UC149529  Panicum capillare J. Burtt Davy Jun 17 1897-Jun 24 1897 3346 Lassen Honey Lake Valley Comment
  CAS-BOT-BC259612  Pascopyrum smithii James Jokerst 1983-7-25 1898 Lassen Near Madeline Plains 1614 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
  CHSC91320  Pectocarya penicillata Lowell Ahart; John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  SEINET13352677  Pectocarya penicillata A. Tiehm 1980-1 5753 Lassen N end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  CHSC5898  Pedicularis attollens M. West 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  JEPS3332  Pedicularis groenlandica George Gillett 1952-7-29 119 Lassen w slopes of Paradise Meadow; Lassen Volcanic National Park 2148 Comment
  UCD18965  Pedicularis semibarbata Raymond D. Ratliff 1965-8-4 49 Lassen Lassen National Forest, Harvey Valley Allotment (HV 19-13). 1767 Comment
  RSA6481  Penstemon D. D. Keck 1930-7-23 953 Lassen 4 miles west of Susanville, nearly to the divide; but not seen on western watershed. 1463 Comment
  SEINET10832452  Penstemon deustus Mary Susan Taylor 1974-1 Taylor 310 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  POM195126  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 948 Lassen Susanville. 1280 Comment
  NY591825  Penstemon deustus var. pedicellatus F. W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1097.3 Comment
  SEINET5326740 Image available Penstemon deustus var. pedicellatus G. Schoolcraft 1993-6-29 2309 Lassen Ash Valley RNA between Adin & Madeline, CA 1585 Comment
  JEPS28707  Penstemon gracilentus George W. Gillett 1957-7-28 936 Lassen near w shore, Widow Lake Lassen Volcanic National Park, Widow Lake 2072 Comment
  JEPS94557  Penstemon gracilentus Vernon Oswald and Lowell Ahart 1997-6-24 8598 Lassen s of Susanville (on n side of Dianmond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Dianmond Mountain, Forest Road 29N43 1685 Comment
  SEINET10917288  Penstemon gracilentus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1900 Comment
  RSA668193  Penstemon gracilentus Karl Vincent, Charlotte A. Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn. Along CA A1 at Eagle Lake Summit, ca 7.6 mi N of jct. CA 36, ca 7 air miles NW of Susanville. 1933 Comment
  UC584356  Penstemon janishiae G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2282 Lassen summit and e slope Diamond Mt. 2194 Comment
  NY627262  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mile south of Westwood Comment
  NY627271  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood 1493.5 Comment
  POM252804  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen West of Westwood. Comment
  SEINET11262098  Penstemon neotericus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3937 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  UC1036203  Penstemon neotericus George W. Gillett 1953-7-13 272 Lassen Westwood Junction Highway 36 , Westwood Junction (Lassen National Forest) 1562 Comment
  UC1523710  Penstemon neotericus Gary Schoolcraft 1981-7-9 502 Lassen e slope of Roop Mtn. Comment
  HSC21043  Penstemon newberryi Fred J. Kindel 1955-7-19 Lassen Silver Lake Comment
  SEINET3836566 Image available Penstemon newberryi subsp. newberryi Marcus E. Jones 1897-7-7 Lassen Lassen's Peak 1829 Comment
  NY627392  Penstemon newberryi var. newberryi R. M. Austin 08 1878 s.n. Lassen Mount Dyer Comment
  CHSC4912  Penstemon roezlii A. E. Anderson 1967-6-24 27 Lassen Abundant in soil on roadside leading to Murrer's Meadow, 1 mi. east of junction of road to Eagle Lake Biological Station. 1554 Comment
  NY650094  Penstemon roezlii N. H. Holmgren 1978-6-11 8920 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
  NY650100  Penstemon roezlii G. Schoolcraft 1982-6-16 701 Lassen North of Shinn Ranch 1548.4 Comment
  UC1520673  Penstemon roezlii Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9523 Lassen 24 km (15 mi) airline distance se Ravendale (21.9 km (13.6 mi) from U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1580 Comment
  UC690374  Penstemon roezlii David D. Keck and J. Clausen 1935-6-24 3727 Lassen 5 mi s Likely ((Modoc Co.)); s of Likely 1400 Comment
  NY650103  Penstemon roezlii J. T. Howell 1974-7-30 50689 Lassen Slope south and southeast of Diamond Mountain 2225.0 Comment
  SEINET226061  Penstemon roezlii M. Lavin 1982-5-30 4122 Lassen E of Hallelujah Junction 22 air mi NW of Reno W side of Petersen Mtns 1676 Comment
  CAS-BOT-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-BC239495  Penstemon rydbergii var. oreocharis Leland S. Smith 1927-7-1 49 Lassen Lassen National Forest, at Bogard Ranger Station Comment
  CAS-BOT-BC239498  Penstemon rydbergii var. oreocharis John Thomas Howell 1976-7-20 s.n. Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC239499  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36, road to Coppervale R.S., E. of Westwood 1493 Comment
  CAS-BOT-BC239503  Penstemon rydbergii var. oreocharis B. C. Cain 1925-8-24 88 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CAS-BOT-BC239510  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 4 miles east of Westwood 1432 Comment
  CHSC107320  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2011-6-20 17502 Lassen Meadow, about 40 yards west of the stream, about 50 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
  CHSC12939  Penstemon rydbergii var. oreocharis K. R. Stern 1974-6-26 5869 Lassen E end of Champs flat. Comment
  NY651252  Penstemon rydbergii var. oreocharis G. Schoolcraft 1985-6-12 1418 Lassen Edge of Grasshopper Valley, at south end. 1615.4 Comment
  RSA59553  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen 0.5 mi N of turnoff to Heir, Hwy 395, between Milford and Doyle. 1280 Comment
  UC614472  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 mi ne Robber Creek (near Westwood); ne of Robber Creek, near Westwood 1219 Comment
  UC423671  Penstemon speciosus David D. Keck 1930-7-23 950 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  NY661042  Penstemon speciosus P. A. Munz 1947-5-19 11877 Lassen Highway 395, 3.5 miles south of Ravendale 1615.4 Comment
  RSA401877  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi north of jct with Route 24, northeast of Plumas. 1524 Comment
  CAS-BOT-BC239659  Penstemon sudans G. Schoolcraft 1996-7-15 2534 Lassen About 2 miles n. of Susanville 1371 Comment
  CAS-BOT-BC243410  Penstemon sudans David D. Keck 1930-7-23 953 Lassen Four miles west of Susanville, Sierra Nevada 1463 Comment
  CAS-BOT-BC243412  Penstemon sudans David D. Keck; J. Clausen 1935-6-25 3756 Lassen Susanville Comment
  CHSC114420  Penstemon sudans Loren Gehrung 2005-7-7 Lassen North side of Highway 36 near Devils Corral at Hidden Valley, about six miles west of Susanville, California. 1432 Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 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
  JEPS6881  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen along Highway #36 on slope e Fredonyer Pass (in gravel); e of Fredonyer Pass in gravel 1645 Comment
  UC27436  Penstemon sudans J. Burtt Davy Jun 17 1897-Jun 24 1897 3401 Lassen Willow Creek , Willow Creek (Honey Lake Valley) Comment
  RSA0006234  Penstemon sudans Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA0029641  Penstemon sudans Anthony Baniaga, R. Bomberger 2011-7-28 478 Lassen Lassen National Forest. Highway 36, ca. 1/4 mile E of 'Fredonyer Pass Winter OHV Parking Lot.' 1950 Comment
  NY763152  Penstemon venustus K. A. Vincent 1987-6-25 4436 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
  HSC100163  Peraphyllum ramosissimum J. P. Smith, & J. O. Sawyer 2011-8-14 13378 Lassen Along service road to transmitter facility, 3.2 mi. W of Hwy. 395. Comment
  CAS-BOT-BC211251  Perideridia Louella Bass 1976-1-1 158 Lassen Elysian Valley Comment
  POM82581  Perideridia bolanderi subsp. bolanderi Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CHSC105249  Perideridia lemmonii Lowell Ahart; John Dittes 2010-7-31 16991 Lassen On the south side 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
  UC1523773  Perideridia oregana Gary Schoolcraft 1971-7-13 503 Lassen near Silva Flat 1719 Comment
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  CAS-BOT-BC423345  Peritoma platycarpa Roxana S. Ferris; Rena Duthie 1919-6-11 13 Lassen Murry on N.C.O. line Comment
  SEINET5845147  Peritoma platycarpa J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  OBI77201  Persicaria amphibia Anthony Baniaga 2011-7-23 517 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1707 Comment
  CAS-BOT-BC419144  Persicaria maculosa Luella Bass 1980-8-29 s.n. Lassen Standish Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  RSA38635  Phacelia adenophora P. A. Munz 1947-5-19 11881 Lassen Madeline 1677 Comment
  SJSU14070  Phacelia adenophora W. Savage 1964-6-30 337 Lassen by Hwy 89, 11 mi N of Susanville Comment
  UC1069270  Phacelia bicolor var. bicolor E. Sawyer 1935-6-27 233 Lassen Long Valley Sierraville Quadrangle Comment
  UC107370  Phacelia bicolor var. bicolor T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC60746  Phacelia glandulifera Vernon H. Oswald; Lowell Ahart 1993-6-14 5541 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
  CDA40418  Phacelia hastata J. T. Howell 1934-7-8 12480 Lassen Champ s Flat. 0 Comment
  UCD120478  Phacelia hastata John Thomas Howell 1934-7-8 12480 Lassen Champ's Flat. Comment
  UC24403  Phacelia hastata subsp. compacta J. Burtt Davy Jun 17 1897-Jun 24 1897 3407 Lassen Chat Honey Lake Valley, Long Valley Comment
  CHSC14192  Phacelia hastata subsp. hastata M. S. Taylor 1974-6-28 274 Lassen Scattered on w shore of Pelican Point in Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  HSC82200  Phacelia heterophylla Thomas W. Nelson, Jane P. Nelson 1980-7-6 6055 Lassen Along Modoc Nation Forest Rd. 2 mi. NE of Ash Creek Campground 1524 Comment
  SEINET12765228  Phacelia humilis Vernon H. Oswald, Lowell Ahart 1997-6-24 8620 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a impoundment on Forest Rd. 29N43, ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary.; 0 2036 Comment
  SEINET5536709  Phacelia humilis N. H. Holmgren, P. K. Holmgren 1978-6-11 8908 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  UC1259992  Phacelia humilis Jeffrey Huber 1971-6-2 111 Lassen on CA Hwy 139 approx. 30 mi n Susanville 1645 Comment
  UCD120530  Phacelia humilis var. humilis Beecher Crampton 1960-6-18 5728 Lassen N.E. part of county; southern Warner Mtns., vicinity Blue Lake Ranch. Comment
  RSA516986  Phacelia humilis var. humilis Barbara Ertter, Gary Schoolcraft 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak. 2195 Comment
  CHSC58500  Phacelia hydrophylloides Vernon H. Oswald 1992-7-3 5060 Lassen Lassen Volcanic National Park. Trail between Juniper and Horseshoe lakes, on the W side of the ridge between the lakes. 2078 Comment
  CHSC48470  Phacelia inundata Vernon Oswald 1986-6-15 2114 Lassen Near Eagle Lake Biological Station. 1584 Comment
  UC932054  Phacelia inundata Verne Grant and Alva Grant 1947-9-5 8374 Lassen nw shore Eagle Lake Comment
  CHSC12454  Phacelia linearis Robert W. Severin 1969-6-27 38 Lassen E.L.B.S., 250 ft. n of Vesta Holt Hall. Comment
  CHSC5051  Phacelia linearis L. B. Barlow 1967-6-23 3 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC60748  Phacelia linearis Vernon H. Oswald; Lowell Ahart 1993-6-14 5532 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
  CHSC80208  Phacelia linearis Jeanne Boze 1981-6-13 117 Lassen On northeast slope of Gallatin Peak. 1981 Comment
  RSA712931  Phacelia linearis L. P. Janeway 2005-7-4 8463 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  SBBG64994  Phacelia linearis S. W. Hutchinson -Jun-1925 395 Lassen Eagle Lake 1554 Comment
  CDA40405  Phacelia linearis T. C. Fuller 1963-6-1 10637 Lassen Road to Willow Springs Campground, 2.0 miles east of Pittville-Susanville Road, 11.3 miles (road) south of Pittville. 0 Comment
  UC107396  Phacelia procera T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC141448  Phacelia ramosissima var. eremophila John Thomas Howell 1934-6-10 11873 Lassen Janesville Comment
  POM203780  Phacelia ramosissima var. eremophila J. T. Howell 1934-6-10 11873 Lassen Janesville Comment
  SEINET5497674  Phacelia tetramera A. Tiehm 1980-1 5750 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north-northwest of Wendel 1231 Comment
  NY1057981  Phacelia thermalis N. H. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  NY1057983  Phacelia thermalis H. D. D. Ripley 1943-6-15 5761 Lassen Along Smoke Creek northeast of Viewland 1311 Comment
  UCR80230  Phacelia thermalis J. T. Howell 1934-6-16 12222 Lassen Bieber 1258 Comment
  CHSC7695  Phalaris arundinacea Beverley J. Wise 1969-6-4 135 Lassen 2 mi. east of Susanville on Las. Co. Rd. 215. 1310 Comment
  UCD88537  Phalaris arundinacea R. Tofsrud 1947-7-20 257 Lassen Near Pittville. Comment
  CAS-BOT-BC250846  Phleum pratense Malcom A. Nobs; S. Galen Smith 1949-7-21 1056 Lassen 4 miles north of Madeline Comment
  UC1100415  Phleum pratense Herbert L. Mason and Verne Grant 1947-7-9 13303 Lassen 5 mi e Bieber (irrigation ditch) Comment
  UCD89650  Phleum pratense L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  JEPS69955  Phlox diffusa Milo S. Baker 1890-1 Lassen Milford Comment
  UC106950  Phlox diffusa T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  SEINET11263184  Phlox diffusa Barbara Ertter 1990-5-13 8964 Lassen McCoy Road N of Westwood, 3 miles from junction with A21, ca 6 airmiles N of Westwood.; 0 1676 Comment
  UC1137767  Phlox douglasii subsp. rigida August L. Hormay 1934-7-10 Lassen Halls Flat Lassen National Forest 1706 Comment
  JEPS94134  Phlox gracilis Vernon H. Oswald and Lowell Ahart 1998-5-22 9100 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
  UC1124222  Phlox gracilis K. E. Bradshaw 1939-5-27 230 Lassen Black Mountain Experimental Forest, Plot 39-1, s end Lassen National Forest, Halls Flat Quad. 1752 Comment
  JEPS29740  Phlox speciosa subsp. occidentalis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8495 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  POM75677  Phlox speciosa subsp. occidentalis Marcus E. Jones 1897-6-28 10531 Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  RSA715614  Phlox speciosa subsp. occidentalis L. Ahart, John Dittes 2005-6-1 11846 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC23964  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  NY963725  Phlox speciosa var. nitida H. D. D. Ripley 1944-5-29 5955 Lassen South of Janesville 1280 Comment
  CHSC35953  Phlox stansburyi M. S. Taylor 1982-5-29 4572 Lassen Ca. 500 yds ne of the jct of Hwys 70 and 395 at Hallululia Jct, ca 23 mi n of Reno. Comment
  CHSC36495  Phlox stansburyi Theresa Costa 1982-6-4 31 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. Comment
  CHSC64803  Phlox stansburyi Vernon H. Oswald 1995-5-31 6802 Lassen Modoc Plateau. Smoke Creek Rance Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  UC106965  Phlox stansburyi T. S. Brandegee 1892-6-22 Lassen Honey lake Comment
  UCD118472  Phlox stansburyi var. brevifolia Grady L. Webster 1989-5-13 7716 Lassen 2.5 mi E of Beckworth Pass. 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
  UC72905  Phoenicaulis cheiranthoides Milo S. Baker 1890-1 Lassen Milford Comment
  JEPS127162  Phoradendron bolleanum Lowell Ahart, John Dittes 2016-7-13 21136 Lassen 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 southern slope of Big Valley. Comment
  UC769862  Phragmites australis R. F. Hoover 1940-10-11 4682 Lassen s Doyle; Long Valley Comment
  HSC1474  Pinus contorta R. A. Magie 1964-5-1 61 Lassen 15 mi. W of Susanville on Hwy. 44 1524 Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  SEINET11610302  Pinus jeffreyi David Charlet 1996-7-8 2288 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  UCSB48306  Plagiobothrys canescens Hardham, Clare 1961-6-17 Lassen Baxter Creek S. of Susanville 1676 Comment
  JEPS28716  Plagiobothrys cognatus George W. Gillett 1957-7-29 954 Lassen Snag Lake Lassen Volcanic National Park (shoreline near e inlet) 1850 Comment
  CHSC106079  Plagiobothrys cusickii Lowell Ahart; John Dittes 2010-7-31 17014 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  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
  CHSC113070  Plagiobothrys cusickii Lowell Ahart; John Dittes 2013-7-22 18870 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS107314  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-1 11906 Lassen Depression on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  RSA0035913  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2008-6-20 14914 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
  CHSC115562  Plagiobothrys hispidulus Lowell Ahart; John Dittes 2015-7-13 20318 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  RSA0001862  Plagiobothrys humifusa Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC60727  Plagiobothrys kingii var. harknessii Vernon H. Oswald; Lowell Ahart 1993-6-14 5538 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
  UC1584021  Plagiobothrys kingii var. harknessii G. Schoolcraft 1990-6-12 2088 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CHSC64872  Plagiobothrys leptocladus Vernon H. Oswald; Lowell Ahart 1995-6-19 6896 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  UCD55307  Plagiobothrys leptocladus Ellen Dean; Gary Schoolcraft 2006-5-16 3136 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-BC228462  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen Along edge of Moll Res. W of Ash Valley 1606 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
  RSA0035395  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2008-6-20 14921 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
  RSA0105581  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA39738  Plagiobothrys scouleri var. hispidulus P. A. Munz 1947-5-20 11891 Lassen Milford. 1265 Comment
  CHSC112445  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18771 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
  CHSC112751  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2013-7-22 18873 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  CHSC91317  Plagiobothrys tenellus Lowell Ahart; John Dittes 2005-6-1 11883 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction. 1438 Comment
  UCD55159  Plagiobothrys tenellus Ellen Dean 2006-5-15 3047 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  JEPS103179  Plantago lanceolata G. Schoolcraft 2000-6-5 2897 Lassen Hwy 395 and Johnstonville Road near Susanville Airport 1310 Comment
  UCD124605  Plantago lanceolata P. B. Schultz 1967-7-11 70 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  HSC16636  Platanthera dilatata var. leucostachys H. E. Parks, S. T. Parks Jun 1928 217 Lassen Lassen National Park, Drakesbad 1768 Comment
  SEINET10972033  Plectritis congesta Mary Susan Taylor 1974-5-4 Taylor 222 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
  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
  UC1924225  Plectritis macrocera Debra Valov 2004-6-8 2004249 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC66852  Pleiacanthus spinosus Vernon H. Oswald 1996-10-3 8297 Lassen Modoc Plateau. North of Susanville on Horse Lake Road (Lassen 546) 4.2 mi W of Hwy. 395. On the edge of the road. 1645 Comment
  UC1069840  Pleiacanthus spinosus H. S. Yates 1936-8-11 6064 Lassen near Milford; Amedee Quad. 1280 Comment
  CHSC108013  Poa bulbosa Lowell Ahart; John Dittes 2011-6-20 17495 Lassen About 40 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
  UC1924563  Poa bulbosa Debra Valov 2006-5-30 2006035 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CHSC106360  Poa compressa Lowell Ahart; John Dittes 2010-7-31 16992 Lassen On the bottom of a 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
  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
  UCD90889  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen northeastern part of county. Long Valley, 6 miles southeast of Jess Valley, southern Warner Mountains. 2133 Comment
  UCD90918  Poa cusickii Leo Whitney 1935-6-10 3214 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CAS-BOT-BC247256  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadow Comment
  CDA2366  Poa pratensis A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester. Comment
  RSA152756  Poa pratensis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16337 -A Lassen 13.5 mi E. of Susanville Comment
  SEINET10523355  Poa pratensis Billy Joe Cox 1971-6-11 Cox 3188 Lassen 1 mi W of Westwood, on CA Hwy 36; scattered Pinus ponderosa, Pseudotsuga menziesii, Arctostaphylos, and Ceanothus all volcanic soils, rather flat & arid. Comment
  UC1024691  Poa pratensis subsp. pratensis Leo Whitney 1933-8-2 2154 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen Nat'l Forest 1920 Comment
  CAS-BOT-BC255021  Poa secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49521 Lassen Elysian Valley, W of Janesville 1325 Comment
  POM100297  Poa secunda Marcus E. Jones 1897-6-23 11426 Lassen Amedee. 1220 Comment
  POM203054  Poa secunda J. T. Howell 1934-7-6 12459 Lassen Harvey Valley Comment
  UC1951068  Poa secunda Debra Valov 2009-4-26 2009024 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CAS-BOT-BC236250  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia 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-BC247054  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UC1024690  Poa secunda subsp. juncifolia Leo Whitney 1933-7-15 2155 Lassen ca 16 mi w of upper end Eagle Lake (Harvey Mt); Lassen Nat'l Forest 1981 Comment
  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
  UC188907  Poa secunda subsp. juncifolia Milo S. Baker Lassen Dixie Valley Comment
  UCD18953  Poa secunda subsp. juncifolia Jack N. Reppert 1965-7-12 28 Lassen Lassen National Forest, Harvey Valley Allot. (HV 17-11). 1682 Comment
  UCD92164  Poa secunda subsp. juncifolia J. E. Coke 1932-12-1 s.n. Lassen Lassen County. Comment
  UCD92429  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
  HSC10738  Poa secunda subsp. secunda R. S. White 1965-5-15 74 Lassen 10 mi. W of Susanville on Hwy. 36 Comment
  HSC79825  Poa secunda subsp. secunda William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UC1024813  Poa secunda subsp. secunda Leo Whitney 1935-6-19 3266 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024871  Poa secunda subsp. secunda Leo Whitney 1935-5-26 3156 b Lassen 10 mi e Adin (Ash Creek) 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
  UC584341  Poa secunda subsp. secunda G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2322 Lassen ca 1 mi below summit Black Mt 1940 Comment
  UC1024873  Poa wheeleri Leo Whitney 1935-5-26 3154 Lassen 10 mi e Adin (Ash Creek) Comment
  CAS-BOT-BC244269  Podagrostis humilis George W. Gillett 1957-7-28 925 a Lassen Lassen Volcanic National Park. Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake, 100 yards above trail junction 1859 Comment
  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
  CHSC112409  Polemonium micranthum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18743 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
  NY963445  Polemonium micranthum A. Tiehm 1986-5-14 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill 1707 Comment
  RSA0036995  Polemonium micranthum Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18743 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  OBI48165  Polemonium micranthum Rhonda Riggins 1989-4-27 1644 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  JEPS17614  Polemonium occidentale Rimo Bacigalupi 1955-7-20 5404 Lassen on grade 2.3 mi s Patterson Ranger Station ([and 0.8 mi s of Lassen-Modoc county line], meadowy spots along East Creek, southern end of the Warner Mountains); Modoc National Forest, Warner Mountains, East Creek 2011 Comment
  CHSC532  Polyctenium fremontii 1944-6-30 Lassen Grasshopper Valley. 1624 Comment
  CDA20360  Polyctenium fremontii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; No other data provided. 0 Comment
  SD131676  Polyctenium fremontii Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11703 Lassen 6.6 miles north of the Wendel Road on Highway 395 from Susanville to Alturas. 1349 Comment
  NY182307  Polyctenium fremontii var. confertum G. Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1609.3 Comment
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  SEINET5326411  Polyctenium williamsiae G. Schoolcraft 1998-5-19 2707 Lassen S. end Mud Flat. 1341 Comment
  CAS-BOT-BC167847  Polygala subspinosa T. Wendt; E. Lott 1975-6-12 1031 Lassen 4.5 mi. E of Rte 395 on Smoke Creek Ranch Road, E. of Mud Flat 1371 Comment
  UC1192333  Polygonum amphibium var. emersum Verne Grant and Irving Schneider 1947-7-30 8192 Lassen Tule Lake; s point of w embayment Comment
  CHSC59094  Polygonum aviculare Vernon H. Oswald; Lowell Ahart 1992-8-25 5191 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. Locally common in wet, muddy volcanic gravel on the drying strand of the lake. 1851 Comment
  UC1136194  Polygonum bistortoides Robert W. Gardner 1937-6-20 G- 20 Lassen Burgess Spring Halls Flat Quadrangle Comment
  RSA518872  Polygonum davisiae Barbara J. Ertter 1988-7-25 7863 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  CHSC64889  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1995-6-19 6880 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. In a shallow wash. 1383 Comment
  CHSC66255  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1996-6-24 7864 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally common in open woods on the W side of the meadow ca. 0.4 mi S of the cabins. 1633 Comment
  UC1553395  Polygonum douglasii subsp. spergulariiforme G. Schoolcraft 1988-6-15 1814 Lassen 16 mi e Adin; Ash Valley RNA/AEC 1584 Comment
  JEPS28705  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen draw 1 mi above Butte Lake (on Widow Lake Trail); Lassen Volcanic National Park 1905 Comment
  CAS-BOT-BC419857  Polygonum polygaloides subsp. confertiflorum John Thomas Howell 1976-7-20 52031 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  JEPS22874  Polygonum polygaloides subsp. confertiflorum Herbert L. Mason Jul 29 1955-Jul 31 1955 14639 Lassen Pine Creek Flat Comment
  JEPS28647  Polygonum polygaloides subsp. confertiflorum George W. Gillett 1957-7-22 874 Lassen near s shore of Snag Lake, Lassen Volcanic National Park Snag Lake Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 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
  CHSC60385  Polygonum polygaloides subsp. kelloggii Mary Ann Showers 1992-6-12 2529 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  POM203797  Polygonum sawatchense J. T. Howell 1934-7-9 12528 Lassen Harvey Valley. Comment
  CAS-BOT-BC420157  Polygonum sawatchense subsp. sawatchense Clarence R. Quick 1961-6-21 61 -18 Lassen Adjacent to Road 21, Blacks Mountain Expermental [Experimental] Forest, northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC232546  Polypogon monspeliensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16346 Lassen Along margin of drainage gulley below reservoir, N of road 13.5 miles E of Susanville Comment
  UC1100378  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1478 Lassen 1 mi n Doyle (Honey Lake Valley, marshy banks of Long Creek); Honey Lake Valley, banks of Long Creek Comment
  CHSC27641  Porterella carnosula George Deniso 1978-7-21 94 Lassen S end of Mohogany L., S of Eagle L. 2060 Comment
  UC195849  Porterella carnosula Franklin P. Nutting Lassen flat near Eagle Lake; near Eagle Lake Comment
  HSC63956  Porterella carnosula Teresa Prendusi 1980-7-1 Lassen Champs Flat, ca. 8 mi. W of N end of Eagle Lake. 1677 Comment
  JEPS108444  Porterella carnosula Lisa Schultheis 1995-6-27 229 -95 Lassen W side of Rt. 395, 3.5 mi S of Madeline. Comment
  SEINET10460819  Porterella carnosula G. Ledyard Stebbins 1949-8-6 Stebbins 4002 Lassen Edge of Feather Lake, between Susanville and McArthur. Mud flats 1676 Comment
  SEINET10460824  Porterella carnosula Peter H. Raven 1958-6-17 Raven 13294 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline Comment
  SEINET10460832  Porterella carnosula Robinson Robinson 71 Lassen 1737 Comment
  CHSC4850  Potamogeton R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CAS-BOT-BC452094  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  UCD138219  Potamogeton amplifolius Gordon Leppig 1998-8-18 1064 Lassen Modoc National Forest; Blue Lake. Lake shore south of camp ground. 1859 Comment
  UCD150403  Potamogeton crispus William Anderson 1963-7-9 s.n. Lassen Honey Lake Refuge. Comment
  CAS-BOT-BC452150  Potamogeton diversifolius R. F. Thorne; Larry E. DeBuhr 1975-8-22 47201 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UC1100072  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-9-6 8380 Lassen n arm of Eagle Lake Comment
  SEINET9322243  Potamogeton perfoliatus var. richardsonii Robert Thorne, DeBuhr, Larry 1975-8-22 47200 Lassen Hwy 395 Comment
  CAS-BOT-BC454090  Potamogeton pusillus subsp. tenuissimus Wm. Anderson 1960-6-16 s.n. Lassen Barrow pit along county road 1 mi. nw. of Tanner Ranch, Honey Lake Valley Comment
  UC1100047  Potamogeton pusillus var. pusillus Malcolm A. Nobs, S. Galen Smith 1949-7-20 1045 Lassen Bieber, along Highway 299 Bieber Comment
  RSA327306  Potamogeton richardsonii A. Tiehm, Gary Schoolcraft 1984-8-14 9242 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  POM312882  Potentilla biennis Verne Grant 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  UC12523  Potentilla fruticosa M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  JEPS103180  Potentilla rivalis G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1645 Comment
  NY833598  Potentilla rivalis var. millegrana G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1646 Comment
  CHSC105253  Poteridium annuum Lowell Ahart; John Dittes 2010-7-31 17003 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
  CDA26124  Prunus andersonii S. E. Piper 1943-7-14 Lassen Southwest, south and east edges of Honey Lake Desert. 1 mile east of Herlong. 0 Comment
  HSC101096  Prunus andersonii C. Dow, D. Garrison 2008-5-3 Lassen OHV Trailhead and Trail to Indian Springs 1439 Comment
  HSC63042  Prunus subcordata J. P. Smith, J. O. Sawyer 1971-5-23 4662 Lassen Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo Comment
  CHSC66398  Prunus virginiana var. demissa Vernon H. Oswald; Lowell Ahart 1996-6-17 7767 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 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  CHSC61950  Pseudognaphalium thermale Brian Murray 1992-5-31 3 Lassen 1/2 mile East of four corners on Willow Creek Rd. On the side of the road. Comment
  CAS-BOT-BC239803  Pseudoroegneria spicata Doris Kildale Gillespie 1930-5-12 9328 Lassen 2 miles north of Susanville on road to Alturas Comment
  CHSC29919  Pseudostellaria jamesiana Robin Ondricek 1978-6-27 73 Lassen On Coleman Lake Rd., 1977 burn area. 1950 Comment
  SEINET5345382  Pseudotsuga menziesii var. menziesii D. A. Charlet, T. Charlet 1996-7-20 2300 Lassen Sierra Nevada; Diamond Mts, Upper East canyon (Milford Grade) 1770 Comment
  UCD135122  Pseudotsuga menziesii var. menziesii John Thomas Howell; Gordon H. True 1973-6-28 49409 Lassen Sierra Nevada, Elysian Valley, west of Janesville. 1310 Comment
  CHSC64868  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6897 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  POM253219  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile east of Westwood. 1524 Comment
  RSA32005  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles E of Westwood 1524 Comment
  UC1562803  Pterospora andromedea Barbara Ertter 1987-7-25 7319 Lassen Hwy 44 ca 1 mi E of Shasta Co. line 1645 Comment
  HSC68918  Pterospora andromedea Gary Schoolcraft 1980-7-28 339 Lassen N of Clark's Valley 2073 Comment
  CAS-BOT-BC239823  Puccinellia lemmonii G. Schoolcraft 1986-6-2 1601 Lassen About 1 mile west of NV stateline 1341 Comment
  CHSC112789  Puccinellia lemmonii Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18788 Lassen Depression, on the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  UCR244041  Puccinellia nuttalliana Jim Andre 1993-6-1 19711 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CHSC25129  Purshia tridentata Paul Lyman 1970-5-2 29 Lassen Bald Mountain; Janesville. On south slope of Bald Mountain, 10 miles East of Susanville. Comment
  CHSC67066  Purshia tridentata Willis Ball 1969-6-24 26 Lassen On a slope near 5 pts. Growing approx. 2 1/2 mls. from E.L.B.S. 1767 Comment
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  SJSU14476  Purshia tridentata W. D. Pitts 1990-5-24 300 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  SJSU14478  Purshia tridentata W. D. Pitts 1970-5-29 301 Lassen by Hwy 395, 5 mi N of Doyle Comment
  SEINET10904099  Purshia tridentata Mary Susan Taylor 1974-1 Taylor 260 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC147817  Purshia tridentata var. tridentata Clarence R. Quick 1961-6-21 61 -33 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC147821  Purshia tridentata var. tridentata Alice Eastwood; John Thomas Howell 1940-6-16 8341 Lassen Janesville Comment
  CAS-BOT-BC147867  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen Near outlet of Widow Lake, ca. 50 yards from lake 2057 Comment
  CHSC105257  Purshia tridentata var. tridentata Lowell Ahart; John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  UC1128551  Purshia tridentata var. tridentata A. Simontacchi 1940-6-4 798 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1836 Comment
  UC764040  Purshia tridentata var. tridentata R. F. Hoover 1940-9-21 4605 Lassen 4 mi w Susanville Comment
  CAS-BOT-BC466054  Pyrola picta Clare B. Hardham 1971-8-22 18389 Lassen Diamond MOuntain 2133 Comment
  UC412673  Pyrola picta Franklin P. Nutting Jul 1928 Lassen Mts. S of Eagle Lake Comment
  RSA46867  Pyrola picta subsp. dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC60880  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald; Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd. (Lassen 111, 36N01) 3.0 mi N of Hwy. 44, NE of Poison Lake. 1709 Comment
  CAS-BOT-BC362264  Pyrrocoma carthamoides var. cusickii G. S. 1984-7-11 1292 Lassen About 4 miles west of Madeline. 37-12-14 1706 Comment
  JEPS41362  Quercus garryana James Griffin 1964-8-4 1272 Lassen along county road from Little Valley to Dixie Valley 1341 Comment
  LA205323  Quercus kelloggii Carl Epling; William Robison 1935-7-15 sn Lassen near Honey Lake Comment
  CHSC7774  Ranunculus Beverley J. Wise 1969-5-18 147 Lassen Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake. 1554 Comment
  JEPS55017  Ranunculus alismifolius var. alismifolius Leland S. Smith 1927-5-25 3 Lassen near Westwood Junction; Lassen Forest, Norval Flat 1747 Comment
  CHSC60765  Ranunculus alismifolius var. davisii Vernon H. Oswald; Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  SEINET5338283  Ranunculus alismifolius var. hartwegii J. Young 1982-6-9 s.n. Lassen M.Meyers Ranch, Adin, Ca. 1372 Comment
  CAS-BOT-BC334481  Ranunculus aquatilis var. capillaceus R. F. Thorne; Larry E. DeBuhr 1975-8-22 46981 Lassen Along Hwy 395 ca 6 miles N of Madeline and 4.5 miles S of Modoc county line. 1616 Comment
  SEINET10536136  Ranunculus cymbalaria Mary Susan Taylor 1974-1 Taylor 268 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC13944  Ranunculus cymbalaria var. saximontanus M. S. Taylor 1974-6-27 268 Lassen Around marsh, ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC27662  Ranunculus cymbalaria var. saximontanus Robert A. Schlising 1978-7-27 3320 Lassen E side of Eagle Lake. Pasture. Comment
  UC1745660  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  RSA152629  Ranunculus cymbalaria var. saximontanus I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16345 Lassen N of road 13.5 miles E of Susanville Comment
  RSA293370  Ranunculus cymbalaria var. saximontanus Reino Alava 1957-7-5 1135 Lassen Along Highway no. 395, 4.4 miles S of Ravendale. Comment
  HSC103655  Ranunculus flammula Thomas W. Nelson, Jane Nelson 1985-8-10 8026 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  CHSC60391  Ranunculus flammula var. ovalis Mary Ann Showers 1992-6-13 2549 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  NY494769  Ranunculus occidentalis var. ultramontanus W. W. Eggleston 1911-5-29 6759 Lassen Vicinity of Doyle Station 1290 Comment
  CAS-BOT-BC362887  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01 Comment
  CAS-BOT-BC58195  Rhododendron columbianum Ben Howard; C. R. Quick 1949-9-14 49 -48 Lassen Jennie Spring, Jennie Mt., N. of Westwood, Lassen National Forest. Comment
  CHSC7759  Ribes aureum Beverley J. Wise 1969-5-4 101 Lassen 0.5 mi. south on Las. Co. Rd. 305 off junction of Hwy 395. 1249 Comment
  CHSC7763  Ribes aureum Beverley J. Wise 1969-5-4 98 Lassen North shore of Leavitt Lake, south side Hwy 395. 1266 Comment
  UC79702  Ribes aureum Walter E. Bryant Lassen Comment
  RSA0115086  Ribes aureum var. aureum Lowell A. Ahart, John Dittes 2008-6-20 14950 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
  CAS-BOT-BC93392  Ribes cereum Milo S. Baker 1894-6-1 s.n. Lassen South side Dixey Mountains. Comment
  CHSC12425  Ribes cereum Anne Linda Brisk 1969-6-20 15 Lassen Found 1/4 mi NE ELBS in flat, basaltic, rocky area. 1554 Comment
  UC14567  Ribes cereum Milo S. Baker 1894-6 Lassen s side Dixey Mts. Comment
  JEPS94487 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1997-5-27 8515 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir on Forest Route 38N04 1682 Comment
  HSC95270  Ribes inerme var. inerme Gordon Leppig 1998-7-12 947 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC726449  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mi e Fredonyer Pass 1706 Comment
  UC921832  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mi e Fredonyer Pass 1706 Comment
  UC1587075  Ribes roezlii G. Schoolcraft 1991-7-30 2191 Lassen n side Widow Mountain (Bear Spring) 1780 Comment
  CHSC13639  Ribes velutinum M. S. Taylor 1974-6-24 288 Lassen Abundant ca. 50 ft w of Eagle Lake Field Station ca. 13 mi nw of Susanville. 1524 Comment
  CHSC23559  Ribes velutinum W. O. Baum 1971-6-21 39 Lassen E slope of Gallatin Peak along edge of fire trail. 1920 Comment
  CHSC7760  Ribes velutinum Beverly J. Wise 1969-4-21 100 Lassen 2.6 mi south of Susanville on Old Dump Rd. 1341 Comment
  CHSC80652  Ribes velutinum V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10033 Lassen Northeast of Doyle in the Fort Sage Mtns, trailhead to top of mountain from the end of a 4WD road. 1798 Comment
  UC1609463  Ribes velutinum Vernon H. Oswald and Lowell Ahart 1993-6-14 5547 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake 1566 Comment
  UC585163  Ribes velutinum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1738 Lassen gully on mountain above Red Rock 1420 Comment
  OBI76971  Rorippa columbiae Anthony Baniaga 2011-7-24 464 Lassen Lassen NAtl forest. Windy Hollow. Pine Crk Valley quad T31N R8e sec 15 NE of SE 1720 Comment
  UC1924227  Rorippa curvipes Debra Valov 2004-6-8 2004247 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  NY181932  Rorippa curvisiliqua var. orientalis V. E. Grant 1947-8-1 8237 Lassen East end of Tule Lake. 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
  NY182160  Rorippa sinuata G. Schoolcraft 1989-6-6 1901 Lassen North end of Secret Valley west of Hwy. 395. 1350.3 Comment
  RSA716339  Rosa californica L. Ahart, J. Dittes 2005-6-2 11944 Lassen 1.5 miles NE of the Anderson Ranch home, Long Valley, 6 miles (air) N of intersection of Scott Road and Hwy 70, 7.5 miles (air) NW of Hallelujah Jct. 1602 Comment
  SEINET11908427  Rosa californica M. Sacks, Detzer 1977-1 7 Lassen 1mi SE of Milford, 1mi NW of Laufman Ranger Station, T26N, R14E, Sec 1 1341 Comment
  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
  UC75495  Rosa woodsii subsp. ultramontana Milo S. Baker 1898-1 Lassen Vicker's Comment
  SEINET10540474  Rosa woodsii subsp. ultramontana Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 890 Lassen Collected 3 mi. N of Milford, CA on Hwy. 395 at Honey Lake campgrounds. Comment
  CAS-BOT-BC148257  Rosa woodsii var. ultramontana George W. Gillett 1957-7-26 915 Lassen Butte Lake - Lassen Volcanic National Park 1844 Comment
  JEPS47284  Rosa woodsii var. ultramontana W. L. Jepson 1939-8-11 19372 Lassen Milford 1280 Comment
  SEINET11908696  Rubus parviflorus J. Detzer, Sacks 1977-1 11 Lassen ca 2.5 mi SE of Milford, 300 yds E of Laufman Ranger Station, 5 ft E of unimproved USFS road 1372 Comment
  UC1746173  Rumex Annetta M. Carter 1945-9-30 1720 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  SEINET4199964  Rumex crispus M. J. Williams 1974-7-29 74 -L-64 Lassen 2 mi. West of Hallelujah Junction, south of Hwy. 70 Comment
  UC465808  Rumex crispus J. Burtt Davy Jun 17 1897-Jun 24 1897 3378 Lassen Honey Lake Valley Comment
  JEPS121295  Rumex fueginus Lowell Ahart 2013-7-22 18849 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
  CHSC1357  Rumex hymenosepalus M. Anthony 1954-5-1 Lassen Hwy 395 between Susanville and Hallelujah Jct. Comment
  NY324109  Rumex lacustris M. S. Baker 1894-1 s.n. Lassen Silver Lake [according to annotation by Rech. f.] Comment
  UC1542940  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA Ash Valley 1554 Comment
  UC6958  Rumex paucifolius Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  UC1745636  Rumex salicifolius var. lacustris Annetta M. Carter 1946-8-18 1776 Lassen S end of Grasshopper Valley, N of Eagle Lake. 1615 Comment
  UC452565  Rumex salicifolius var. lacustris Milo S. Baker Lassen near Eagle Lake Comment
  CHSC65318  Rumex salicifolius var. salicifolius Vernon H. Oswald; Lowell Ahart 1995-8-14 7188 Lassen Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy.395, N of Susanville. 1645 Comment
  CHSC66396  Rumex salicifolius var. triangulivalvis Vernon H. Oswald; Lowell Ahart 1996-6-17 7789 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Growing between the trail and Susan River at the Hwy.36 bridge. 1402 Comment
  UC748281  Rumex salicifolius var. triangulivalvis Annie M. Alexander and Louise Kellogg 1946-8-11 5153 Lassen nw end Grasshopper Valley Comment
  JEPS119645  Rumex triangulivalvis Lowell Ahart, John Dittes 2012-7-9 18302 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC434261  Rumex triangulivalvis John Thomas Howell 1975-7-23 51404 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  CAS-BOT-BC109418  Rumex venosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49231 Lassen Sierra Nevada. On Highway 395 northwest of Doyle on road to Milford. 1280 Comment
  CAS-BOT-BC109419  Rumex venosus John Thomas Howell 1978-4-19 52865 Lassen Sierra Nevada. Along Highway 395 between Doyle and Milford. Comment
  CHSC71095  Rumex venosus Vernon Oswald; G. Schoolcraft, B. Corbin, M. Mini 1998-5-16 9086 Lassen About 1.5 mi southeast of Herlong along a dirt road on the north side of Long Valley Creek between Garnier Rd. and the RR. 1249 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
  UC568  Sagittaria State Geological Survey 1800-1 2189 Lassen Comment
  CHSC12427  Sagittaria cuneata Robert W. Severin 1969-6-25 17 Lassen East side of Murrer's Upper Meadow, in irrigation ditch, 2 miles ese from E.L.B.S. 1584 Comment
  CHSC5927  Sagittaria cuneata J. B. Kimsey 1946-6-17 Lassen Grasshopper Valley. 1624 Comment
  JEPS32201  Sagittaria cuneata Leland S. Smith 1918-7-22 1009 Lassen Blue Lake 1874 Comment
  JEPS87461  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1993-8-3 5753 Lassen n edge Cooper Swamp Cooper Swamp (e of Silver Lake just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); e of Caribou Wilderness, , e of Silver La 1932 Comment
  JEPS124719 Image available Sagittaria cuneata Rechen 1964-6-30 87 Lassen 1 mile west of junction of hwy 299 and Lassen AZ on 299. Comment
  JEPS124720 Image available Sagittaria cuneata Laurel Loeblich 1964-7-1 73 Lassen Along highway 299 going west .5 miles of junction of A-2 and highway 139. Comment
  JEPS124721 Image available Sagittaria cuneata Joe Ammirati 1964-7-1 76 Lassen Ca. 1 mi. W. of Beber on H. W. 299- near bridge. Comment
  CAS-BOT-BC132713  Salix A. T. Whittemore 1979-4-21 79 -040 Lassen South shore of Eagle Lake Comment
  CHSC96721  Salix arctica Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  NY188399  Salix eriocephala subsp. mackenzieana R. D. Dorn 1972-6-2 1492 Lassen Willow Creek, about 15 miles SSE of Adin 1524.0 Comment
  CAS-BOT-BC108056  Salix exigua P. Monnet 1919-7-1 823 Lassen Hot Springs Peak 91 Comment
  CHSC106585  Salix exigua C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  SEINET3260830  Salix exigua Marcus E. Jones 1897-6-28 Lassen Susanville. 1340 Comment
  CAS-BOT-BC128225  Salix lasiandra subsp. caudata James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-24 4121 Lassen Willow Creek Campground on road between Adin and Said Valley Reservoir Comment
  CHSC60767  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1993-6-3 5489 Lassen Bridge Creek Spring Rd. (Lassen 112, Forest 31N06), at Bridge Creek, N of Hwy 44 between Poison Lake and Susanville. 1746 Comment
  UC1609475  Salix lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-3 5489 Lassen n. of Hwy. 44 between Poison Lake and Susanville (Bridge Creek Spring Rd. (Lassen 112, Forest 31N06) at Bridge Creek, s. edge of rd.) 1746 Comment
  NY187800  Salix lucida subsp. caudata J. T. Howell 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville 1325.9 Comment
  CAS-BOT-BC126174  Salix scouleriana Hans Leschke 1964-9-3 1891 Lassen Cinder Cone, Lassen Volcanic Nat. Park Comment
  CHSC13655  Salix scouleriana E. L. Smith 1971-7-26 987 Lassen At Eagle Lake Field Station ca. 20 mi nw of Susanville. 1615 Comment
  CAS-BOT-BC176903  Salsola tragus Margaret Williams; Steven Williams 1974-7-26 74 -L-7 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  CDA34340  Salvia aethiopis Anonymous 1987-6-18 Lassen New Pine Creek, along Hwy 395 north into Oregon. 0 Comment
  CDA5754  Salvia aethiopis C. Siebe, W. V. Johnson 1958-7-11 Lassen Westwood. 0 Comment
  CHSC7680  Salvia dorrii Beverly J. Wise 1969-5-16 Lassen 24 mi. east of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  UCLA27615  Salvia dorrii var. dorrii Mrs. H. C. Cantelow 1941-5-22 Lassen 2.5 mi n Secret Valley (C.C.C. Camp on U.S. Hwy 395 to Alturas from Quincy) Comment
  CHSC26166  Sambucus mexicana Detzer; M. Sacks 1977-7-15 5 Lassen Ca. 3.5 mi SE of Milford, 1 mi SE of Laufman Rngr. Stn. on unimproved USFS road. 1420 Comment
  UC1136751  Sambucus mexicana L. R. Short and J. Warren 1936-7-28 S- 490 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  UC773940  Sambucus mexicana L. R. Short and J. Warren 1936-7-28 S- 490 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  RSA74137  Sanicula tuberosa M. S. Baker 1952-5-23 12426 Lassen Hwy 36 E of Chester Comment
  UC1441325  Sanicula tuberosa David H. French 1968-6-2 2880 Lassen about 5 mi e of Westwood (near State Hwy 36) Comment
  CHSC110311  Sarcobatus vermiculatus L. P. Janeway; B. Castro 2012-7-2 10923 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC31116  Sarcobatus vermiculatus J. S. White 1980-4-14 114 Lassen Basin area. 0.1 mi n of US Hwy 395 3.5 mi e of Litchfield. 1341 Comment
  UC768791  Sarcobatus vermiculatus R. F. Hoover 1940-9-28 4637 Lassen Leavitt Comment
  CHSC6239  Sarcodes sanguinea Sam Webb 1946-6-8 Lassen Roop Mountain, Eagle Lake. 2133 Comment
  CAS-BOT-BC466201  Sarcodes sanguinea Peter H. Raven; Otto T. Solbrig 1958-6-16 13254 Lassen Along State Hwy 36, 0.3 mi E of summit of Fredonyer Pass Comment
  CAS-BOT-BC466320  Sarcodes sanguinea R. Carter 1967-6-22 536 Lassen 1/4 mi S of Corners on Peans Ridge Rd., on way to Mahogany Lake 1950 Comment
  JEPS59098  Sarcodes sanguinea Mary G. Clark 1918-5-24 Lassen Westwood, Lassen Co. Comment
  RSA0009383  Saxifraga oregana Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC283085  Schedonorus arundinaceus John Thomas Howell; Gordon H. True 1973-8-1 50185 Lassen Gold Run Creek Road south of Susanville, Diamond Range, Sierra Nevada 1584 Comment
  CAS-BOT-BC111301  Schoenoplectus acutus var. occidentalis Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-20 1487 Lassen Long Creek, 1 mile south of Doyle Comment
  UC2134  Schoenoplectus acutus var. occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3312 Lassen Honey Lake Valley Honey Lake Valley (tules of sloughs and w end of lake) Comment
  RSA0009705  Schoenoplectus acutus var. occidentalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC63613  Schoenoplectus subterminalis Vernon H. Oswald; Helen Ost, John Ost, M. L. Mini 1994-8-6 6446 Lassen Caribou Wilderness from the Hay Meadow trailhead N of Chester, at an un-named lake on the S edge of the trail between Hidden Lakes and Long Lake. 2103 Comment
  CHSC61594  Scirpus microcarpus Arthur G. Barrett 1915-8-18 35 Lassen Plumas National Forest. Laufman Ranger Station. 1463 Comment
  UC1609484  Scirpus nevadensis Vernon H. Oswald and Lowell Ahart 1993-6-14 5521 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake 1566 Comment
  CHSC7755  Scrophularia californica Beverley J. Wise 1969-5-18 110 Lassen 18.2 mi. N. E. of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. North sidewall of Willow Creek Canyon. 1463 Comment
  CHSC66409  Scrophularia desertorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7786 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1432 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
  UC100824  Scutellaria nana Milo S. Baker 1894-7-13 Lassen Pine Creek Comment
  UC726647  Scutellaria nana A. A. Heller 1938-6-23 15186 Lassen 1 mi s of Westwood 1524 Comment
  SEINET13947834 Image available Scutellaria nana Noel H. Holmgren, Patricia K. Holmgren 1980-1 9524 Lassen Upper Smoke Creek drainage, 21.9 km from US Hwy 395 via Rye Patch Canyon, 24 km airline distance SE of Ravendale; 1580 m alt., T33N, R16E, SEC36 1580 Comment
  CAS-BOT-BC240084  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16342 Lassen 13.5 mi. E. of Susanville Comment
  CAS-BOT-BC240085  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  UC205197  Sedum stenopetalum Franklin P. Nutting Lassen Dixey Valley Dixey Valley (sage-brush flat) Comment
  UC506921  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Lassen Forest 1783 Comment
  UC831880  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen w of Fredonyer Pass (on Highway 36) 1676 Comment
  RSA0012768  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen West of Fredonyer Pass on Highway 36. 1677 Comment
  CHSC108003  Senecio hydrophiloides Lowell Ahart; John Dittes 2011-6-20 17503 Lassen About 10 yards west of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS109870  Senecio hydrophiloides Dean W. Taylor 2007-6-14 20129 Lassen between Gordon Lake and Bullard Lake, along Forest Road 31N31 0.3 miles NE of junction with Forest Road 34N25 (this the junction at the northwest end of Gordon Lake) 1828 Comment
  JEPS87532  Senecio hydrophiloides Vernon H. Oswald and Lowell Ahart 1993-6-28 5600 Lassen Rd 35N04 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley 1725 Comment
  CHSC7651  Senecio hydrophilus Beverley J. Wise 1969-5-9 28 Lassen 10.3 mi. east of Susanville on Forest Serv. 8246 off Hwy 36. 1554 Comment
  UC1142925  Senecio hydrophilus A. L. Hormay 1941-6-23 12 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 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
  HSC42542  Senecio hydrophilus Barbara Kelly 1977-8-9 564 Lassen 15 miles east of Madeline on a dirt road from Adin Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CHSC68736  Senecio integerrimus var. exaltatus Vernon H. Oswald; Lowell Ahart 1997-5-27 8508 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. Between the road and a small creek paralleling the road on the north. 1560 Comment
  RSA0124944  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14 .772 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  RSA0124971  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14776 Lassen By E. end Maul Reservoir, on rd. from Adin to Madeline. 1524 Comment
  CAS-BOT-BC341186  Senecio lugens John Thomas Howell 1934-6-14 12159 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  HSC22981  Sidalcea malviflora John Pratt 1970-7-9 71 Lassen 1677 Comment
  CAS-BOT-BC205776  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  SBBG4714  Sidalcea oregana H. and M. Dearing 1939-6-6 3569 Lassen Bieber Comment
  POM260877  Sidalcea oregana subsp. oregana Alice Eastwood, J. T. Howell 1940-6-11 7982 Lassen Big Valley Mountains. Comment
  HSC69610  Sidalcea oregana subsp. spicata Gary Schoolcraft 1980-7-14 Lassen In Ash Valley, NW of the road. 1537 Comment
  UC1553380  Sidalcea oregana subsp. spicata G. Schoolcraft 1988-7-7 1820 Lassen at Painter Creek and Horne Ranch Rd. crossing 1645 Comment
  NY177476  Sidalcea oregana var. spicata J. T. Howell 1934-7-6 12442 Lassen Harvey Valley Comment
  RSA123272  Silene bernardina L. R. Short, D. Gish 1936-7-15 S- 487 Lassen MDM, Burgess Spr. Exp. Range; Forest: Lassen. 1744 Comment
  SD113389  Silene douglasii Darley F. Howe 1964-8-2 3917 Lassen East Creek, Warner Mountains, Modoc National Forest. 2010 Comment
  CHSC59709  Silene menziesii Mary Meyer 1980-7-28 Lassen 2148 Comment
  CAS-BOT-BC389546  Silene nuda G. Schoolcraft 1988-7-7 1818 Lassen SE corners of Madeline Plains ca 1 mi. s. of Horne Ranch 1645 Comment
  CHSC4836  Silene nuda R. Carter 1967-7-16 616 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
  JEPS50954  Silene nuda W. L. Jepson 1918-8-2 7758 Lassen Beckwith Pass 1463 Comment
  UC1137897  Silene nuda E. Sawyer 1935-7-8 274 Lassen 7 3/4 mi ene Loyalton; Sierraville Quad., ene of Loyalton Comment
  UC717968  Silene nuda David D. Keck 1944-7-8 5446 Lassen 2 mi e Westwood (in grassy meadow leading to Mountain Meadows Reservoir); Sierra Nevada, mdw leading to Mountain Meadows Reservoir 1524 Comment
  UCD18969  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  CHSC5243  Sisymbrium altissimum L. Harman 1946-6-25 Lassen Eagle Lake. S. S. Camp at Webbs. 1584 Comment
  JEPS107467  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-1 11850 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  RSA0028051  Sisymbrium altissimum John F. Emmel 1996-7-14 1425 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  CHSC27605  Sisyrinchium bellum Jennifer Estep 1978-7-11 1 Lassen Papoose Creek, SE corner of Eagle L. 1584 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
  NY821295  Solanum physalifolium J. T. Howell 1973-8-1 50146 -A Lassen Near Susanville, Diamond Range 1585 Comment
  JEPS117479  Solanum sarrachoides Lowell Ahart, John Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley 1276 Comment
  CHSC4987  Solanum triflorum R. Clicquennoi 1967-7-1 56 Lassen 2 mi w of Murrer's Ranch turnoff, 14.9 mi w of Murrer's Ranch turnoff [sic], 14.9 mi from Susanville, highway 139. 1463 Comment
  NY820339  Solanum triflorum G. Schoolcraft 1987-9-1 1774 Lassen Along Ash Valley road in Ash Valley 1548 Comment
  UCR67459  Solidago occidentalis George K. Helmkamp 1990-9-23 G- 10 Lassen north of Ravendale 1677 Comment
  CAS-BOT-BC364907  Solidago velutina subsp. californica Louella Bass 1973-9-4 EV 134 Lassen Elysian Valley 1325 Comment
  UC1136808  Solidago velutina subsp. californica L. R. Short 1936-8-20 S- 376 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1859 Comment
  JEPS121251  Sonchus asper Lowell Ahart 2013-7-22 18846 Lassen W margin of duck field, about 50 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC117296  Sonchus asper subsp. asper Lowell Ahart 2016-7-13 21111 Lassen 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Aidn, hills at the southern slope of Big Valley. 1289 Comment
  HSC95264  Sparganium emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC66869  Sparganium erectum subsp. stoloniferum Vernon H. Oswald; Lowell Ahart 1996-9-10 8273 Lassen Mountain Meadows Reservoir SW of Westwood. Along the northwest shore of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CHSC66424  Sparganium natans Vernon H. Oswald 1996-6-15 7766 Lassen Modoc Plateau. Papoose Meadows located ca. 2 mi S of Gallatin Beach at Eagle Lake, NW of Susanville. In Papoose Creek where it leaves the meadow. 1633 Comment
  HSC68557  Sphaeromeria cana Gary Schoolcraft 1979-7-6 127 Lassen N side of Skedaddle Mtns. 1997 Comment
  CAS-BOT-BC149626  Spiraea douglasii Lassen 1927 G. S. Crew 1927-7-24 87 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  UC729643  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen between Grassy Lake and Snag Lake; Mt. Lassen National Park Comment
  CAS-BOT-BC60992  Stanleya viridiflora H. D. Ripley; R. C. Barneby 1943-6-15 5761 a Lassen Smoke Creek, northeast of Kesiland [illegible?]. 1341 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
  SEINET11604939  Stanleya viridiflora L. Bass 1982-7-25 10 -82 Lassen Near Karlo, ca 12 miles N of Litchfield. 1356 Comment
  UCD99328  Stellaria longipes subsp. longipes Ratliff 1966-7-8 1 Lassen Harvey Valley Allot. - Plot 49. 1706 Comment
  CHSC5211  Stenotus acaulis J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  RSA713119  Stenotus acaulis L. P. Janeway, B. Castro 2005-7-10 8487 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge. 1993 Comment
  UC1755281 Image available Stenotus lanuginosus var. lanuginosus Dean W. Taylor 2007-6-14 20127 Lassen Upper Gooch Valley, Forest Road 35N05 (County Road 22) 0.3 miles north of junction with Forest Road 34N45 1889 Comment
  HSC69069  Stephanomeria exigua Gary Schoolcraft 1979-7-3 107 Lassen Along roadside 3 mi. up from Horne Ranch 1641 Comment
  UC1523770  Stephanomeria lactucina Gary Schoolcraft 1981-7-7 496 Lassen on slopes n Landon Lookout 2011 Comment
  CAS-BOT-BC322924  Stephanomeria tenuifolia Louella Bass No date on label. s.n. Lassen Elysian Valley, Sierra Nevada Comment
  CAS-BOT-BC322925  Stephanomeria tenuifolia Clarence R. Quick 1964-8-5 64 -95 Lassen Cal Mt. east of Poison Lake 1767 Comment
  UC1523732  Stephanomeria tenuifolia Gary Schoolcraft 1981-7-7 513 Lassen nw of Susanville Peak 2011 Comment
  HSC79992  Stipa comata William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UCR119160  Stipa thurberiana Beecher Crampton 1964-6-27 7095 Lassen Modoc Plateau, 5 miles southwest of Ravendale. 1707 Comment
  HSC23510  Stuckenia pectinata R. Carter 1967-7-13 594 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  NY541219  Suaeda nigra G. Schoolcraft 1998-9-14 2807 Lassen Flat near Amedee Hot Springs 1219.2 Comment
  UC1609461  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (at Aspen Well, n of Hwy 44, on the nw edge of Harvey Valley) 1725 Comment
  CHSC12410  Symphoricarpos rotundifolius var. rotundifolius Lynn R. Thomas 1969-6-20 133 Lassen Road up Black Mt. N of Five Corners, ca. 3 mi S of E. L. B. S. 1706 Comment
  CHSC60349  Symphoricarpos rotundifolius var. rotundifolius Mary Ann Showers 1992-6-13 2532 Lassen Lassen Volcanic National Park. East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. 1841 Comment
  UC1143049  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spring Experimental Range Lassen National Forest, Burgess Spr. Exp. Range 1792 Comment
  JEPS95906  Symphyotrichum ascendens Lowell Ahart and Vernon H. Oswald 1999-9-13 8230 Lassen along S side of dirt road, Willow Creek is on the S side of the road, about 250 yds. E of the sign in station along Hwy 139, Willow Creek Wildlife Area 1463 Comment
  CAS-BOT-BC98934  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1917 Lassen Battle Creek Meadows - Lassen Butte Region Comment
  CAS-BOT-BC98540  Symphyotrichum spathulatum Louella Bass 1973-6-6 99 Lassen Sierra Nevada - Elysian Valley 1325 Comment
  CAS-BOT-BC98542  Symphyotrichum spathulatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49450 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  CHSC84880  Symphyotrichum spathulatum var. yosemitanum Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 356 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  CAS-BOT-BC221916  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 s.n. Lassen Ca 4 mi SE/Susanville Comment
  UCD86203  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 Lassen open hillside, edge of valley plain, ca. 4 mi SE/Susanville, Lassen Co. Comment
  CHSC108012  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
  CHSC36480  Taraxia tanacetifolia Margaret E. Halloran 1982-6-6 9 Lassen Pine Creek just below fish trap where Pine Crek empties into Eagle Lake. Comment
  CHSC58503  Taraxia tanacetifolia Vernon H. Oswald 1992-7-3 5051 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. 1851 Comment
  CHSC58846  Taraxia tanacetifolia Vernon H. Oswald; Lowell Ahart 1992-7-16 5102 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  UC1122296  Taraxia tanacetifolia Robert W. Gardner 1937-6-26 G- 27 Lassen Poison Lake Halls Flat Quadrangle Comment
  UC1924210  Taraxia tanacetifolia Debra Valov 2004-6-9 2004273 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  CAS-BOT-BC329047  Tetradymia canescens Elmer I. Applegate 1897-6-4 3034 Lassen Madeline Plains Comment
  JEPS38112  Tetradymia canescens W. L. Jepson 1918-8-2 7789 Lassen Long Valley 1371 Comment
  POM31685  Tetradymia canescens Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment