Search Results — 2000 specimen records retrieved (1593 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/).
 Records are made available under the CCH Data Use Terms.

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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78034  Abies concolor Doris K. Kildale 1927-9-11 2794 Lassen 8-10 miles north of Susanville 1524 Comment
  CAS-BOT-BC78036  Abies concolor John Thomas Howell 1976-7-19 51966 Lassen Gold Run Creek southwest of Susanville 1386 Comment
  SEINET11305032  Abies concolor var. lowiana D. Charlet 1996-7-8 2287 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1622 Comment
  CHSC13794  Abies magnifica Cathy Crittenden 1970-7-9 39 Lassen 2 1/2 miles east of Antelope Mtn. lookout on road to Eagle Lake Resort. 1981 Comment
  SEINET10473515  Achillea lanulosa Mary Susan Taylor 1974-1 Taylor 286 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC28647  Achillea millefolium John Thomas Howell 1976-7-19 51958 Lassen SW of Susanville on Gold Run Road 1341 Comment
  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
  JEPS127717  Achillea millefolium Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -172 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  UC1136758  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley 1700 Comment
  UC1136759  Achillea millefolium L. R. Short and Wm. Gansberg 1936-7-9 S 483 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1804 Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  CHSC30582  Achnatherum hymenoides M. A. Dubin 1975-7-20 9 Lassen Eagle Lake Field Station 50 yards north of Kitchen. 1569 Comment
  UC1131573  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen near Johnstonville; Susanville Quadrangle Comment
  UCD50358  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  SEINET10958804  Achnatherum hymenoides Lawrence P. Janeway 1990-7-4 Janeway 3769 Lassen McKesick Peak quad T25N, R16E, NW1/4 of sec. 4. Dry gravelly bench near east-side of saddle ca. 0.8 mi NE of Meadowview Peak. Granitic substrate; with sagebrush/ephedra scrub. 1981 Comment
  UCD50509  Achnatherum lemmonii R. Tofsrud 1947-7-1 243 Lassen Between Bieber and Nubieber. Comment
  CAS-BOT-BC110708  Achnatherum nevadense G. Schoolcraft 1997-6-26 2600 Lassen Large knob between Milford and Janesville. 1676 Comment
  UCD54017  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-8-1 50069 Lassen Canadian Zone forest, east slope of Diamond Range south of Susanville, Lassen County. 2362 Comment
  SEINET7593424 Image available Achnatherum occidentale John Thomas Howell 1934-1 12431 Lassen Hall's Flat Comment
  UC717977  Achnatherum occidentale subsp. occidentale David D. Keck 1944-7-8 5451 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada, Susan River 1341 Comment
  UC1153871  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2066 Lassen 5.5 mi w, along State Hwy. 36 Susanville (volcanic rubble under pine) 1447 Comment
  UCD32665  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51215  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CHSC80710  Achnatherum speciosum V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10034 Lassen Northeast of Doyle in the Fort Sage Mtns, trailhead to top of mountain from the end of a 4WD road. 1798 Comment
  JEPS102671  Achnatherum speciosum V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10034 Lassen NE of Doyle (Fort Sage Mountains, trailhead to top of mountain from the end of a 4WD road) 1798 Comment
  SEINET235272 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC1153869  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen mountain flat 4.5 mi w on State Hwy. 36 Susanville 1432 Comment
  UCD32656  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51425  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CAS-BOT-BC217993  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  UC1037345  Achnatherum webberi Leo Whitney 1935-7-3 3587 Lassen Ashurst Mt. Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  JEPS127283  Acmispon americanus var. americanus Lowell Ahart, John Dittes 2016-7-13 21119 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  SEINET10407851 Image available Acmispon americanus var. americanus F. Farris 1935-8-15 Lassen Susanville Comment
  CHSC117223  Acmispon denticulatus Lowell Ahart; John Dittes 2016-6-7 20996 Lassen West of the pond, 110 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bierber, 7.3 Miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CDA6765  Acroptilon repens T. C. Fuller 1962-8-29 9486 Lassen Road to Adin, 1 miles east of Lookout, Big Valley. 0 Comment
Read comments
Jun 24 2009
  JEPS31589  Adonis aestivalis J. R. Sweeney 1962-7-5 2653 Lassen 1/2 mi n of Willow Creek Guard Station (16 mi n of Susanville, Modoc National Forest, on State Highway 139, 54 mi s of Adin); Modoc National Forest, State Highway 139 1219 Comment
  CHSC21954  Agastache parvifolia Robert A. Schlising 1974-7-19 3152 Lassen SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station along dirt road. Comment
  JEPS126483  Agastache parvifolia Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -047 Lassen Directly off Horn Ranch Road. Follow Horn Ranch Road until you reach a fork with a sign. Follow road left then continue for about 3-5 miles. Comment
  OBI48641  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen Grasshopper Valley, 39 mi N of Susanville 1524 Comment
  SEINET11261375  Agastache parvifolia Robert L. Johnson, Mikel R. Stevens 2015-7-10 3929 Lassen 5.6 rd miles west of jct with Hwy 395 beginning on Dawn Dr, then continuing on road to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1910 Comment
  UC882898  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen 39 mi n Susanville; Grasshopper Valley 1524 Comment
  CHSC23487  Ageratina occidentalis Wayne O. Baum 1971-7-22 71 -59 Lassen E slope of Gallatin Peak. 2072 Comment
  JEPS18703  Ageratina occidentalis Brown and Wieslander 1922-7-23 62 Lassen Martin Springs Eagle Lake, Martin Springs Comment
  CAS-BOT-BC30233  Ageratina occidentalis Hans Leschke 1964-9-4 1894 Lassen Lassen Highway near Diamond Point Comment
  UC1567420  Agoseris glauca var. glauca G. Schoolcraft 1989-6-6 1902 Lassen n end Secret Valley ((w of Hwy 395)) 1350 Comment
  CHSC107994  Agoseris heterophylla Lowell Ahart; John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC68840  Agoseris heterophylla Vernon Oswald; Lowell Ahart 1997-6-24 8601 Lassen South of Susanville on the north side of Diamond Mtn at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (20N10). 1655 Comment
  OBI77284  Agoseris heterophylla Anthony Baniaga 2011-6-17 354 Lassen Lassen NF. N side of Hog Flat Reservoir. Pegleg Mtn quad T30N R10E sec 19 NE of NE 1678 Comment
  CAS-BOT-BC433230  Agoseris heterophylla K. L. Chambers; Peter G. Dorris 1963-5-11 s.n. Lassen Red Rock Road, just east of Hwy. 395 (and just w. of Nevada State Line), ca. 10 mi. n. of Hwy. 70 junction, and s. of Constantia. Comment
  UC585114  Agoseris parviflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1793 Lassen about 2 mi n Madeline 1363 Comment
  CHSC23552  Agoseris retrorsa W. O. Baum 1971-6-28 19 Lassen S slope of Gallatin Peak. 2042 Comment
  UC1136778  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  CAS-BOT-BC127582  Agropyron cristatum Margaret Williams 1974-8-4 74- 4 -78 Lassen Sierra Nevada. Burned area near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  SEINET3915755  Agropyron cristatum Paul Gallian, David B. Dunn 1971-6-2 484 Lassen 5 mi. S of Milford near Honey Lake on U.S. Hwy. 395.; 0 1250 Comment
  CHSC111270  Agropyron cristatum subsp. pectinatum L. P. Janeway; B. Castro 2012-7-3 10942 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark vol-canic rock. 2012 Comment
  UCD18954  Agropyron saundersii Jack N. Reppert 1965-7-12 24 Lassen Lassen National Forest, Harvey Valley Allot. (HV 17-11). 1682 Comment
  UCR152278  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  UC1137133  Agrostis alba August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest, Bogard Ranger Station Comment
  CAS-BOT-BC127240  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50226 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  HSC95196  Agrostis exarata Gordon Leppig, J. Cromwell 1997-7-27 628 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS100322  Agrostis exarata Dean W. Taylor 2001-7-12 17829 Lassen Diamond Mountains, spring at mouth of canyon ca. 4 miles NW of Constantia, along Forest Road 25N02X 1341 Comment
  POM313172  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  SEINET4341020  Agrostis exarata G. Schoolcraft 1994-8-1 2382 Lassen About 2 miles west of Boot Lake 2256 Comment
  CAS-BOT-BC139675  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49484 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC139680  Agrostis gigantea Clare B. Hardham 1969-8-28 17427 Lassen Sierra Nevada. West of Janesville. Comment
  CAS-BOT-BC139297  Agrostis idahoensis John Thomas Howell 1973-7-10 49767 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  UC1567418  Agrostis pallens G. Schoolcraft 1989-7-18 1978 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UC1594652  Agrostis pallens Vernon H. Oswald and Lowell Ahart 1992-7-16 5107 Lassen s side of Hwy 44 1.2 mi se County Road A21 (between Old Station and Susanville); Long Lake 1745 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  SEINET5335984  Agrostis stolonifera M. J. Williams 1974-7-26 74 -L-39 Lassen 2 mi. W of Hallelujah Junction, S of highway 70 1494 Comment
  UCSC000092  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Bogard Ranger Station - Lassen National Forest Comment
  CHSC64799  Aliciella micromeria Vernon H. Oswald 1995-5-24 6778 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  POM313032  Alisma gramineum Malcolm A. Nobs, S. Galen Smith 1949-7-22 1074 Lassen Along Willow Creek, Willow Creek Valley, 10 miles north of Susanville Comment
  RSA32793  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen On an open slope east of Fredonyer Pass. 1646 Comment
  CAS-BOT-BC459569  Allium acuminatum G. Schoolcraft 1986-5-19 1574 Lassen North slope of Bald Mtn., Susanville 1280 Comment
  SEINET8466783 Image available Allium anceps D. W. McNeal 1980-6-1 2340 Lassen open flats beside Co. Hwy.#88, between Adin and Madeline, 15.0 mi.e. of HwY. #299 in Adin. Comment
  JEPS103169  Allium atrorubens var. atrorubens Beth Corbin 2002-6-4 1077 Lassen About 1/8 mi E of Viewland Monument on Hwy 395. 1371 Comment
  POM110069  Allium lemmonii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA125593  Allium lemmonii Peter H. Raven, Otto T. Solbrig 1958-6-17 13288 Lassen U. S. Highway 395, 1.8 miles south of Ravendale. Comment
  RSA504589  Allium lemmonii Bruce Bartholomew, B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC470925  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile west of Bieber Comment
  CAS-BOT-BC472753  Allium lemmonii Peter H. Raven; Otto T. Solbrig 1958-6-17 13288 Lassen Highway 395, 1.8 miles south of Ravendale Comment
  SEINET3884711  Allium lemmonii D. W. McNeal 1983-6-5 2840 Lassen Beside Eagle Lake Road (Lassen Co. Highway A-1) 0.5 mile North of Highway #36.; 0 Comment
  UC2042973  Allium lemmonii Barbara Ertter 1990-5-13 8966 Lassen McCoy Road N of Westwood, 0.3 mi S of Highway 44 on E side of McCoy Flat. Comment
  CAS-BOT-BC474044  Allium parvum G. L. Stebbins; J. A. Jenkins 1937-7-9 2274 Lassen Bare summit ridge and ridges south west of Diamond Mt., south of Susanville 2286 Comment
  SEINET8191388  Allium parvum L. Miller 1934-3-29 s.n. Lassen E of Susanville. Comment
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  JEPS47583  Allium platycaule Hilda W. Grinnell 1934-6-1 Lassen 8 mi sw Susanville 1950 Comment
  SEINET3878902  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 mi W of Madeline on rd. from Adin.; 0 1676 Comment
  HSC84123  Allium platycaule Dale McNeal 1983-6-6 2844 Lassen Wash below Horse Lake Rd., 5.3 mi. NE of the junction of Hwy. 139 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
  JEPS94536  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1997-6-24 8604 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
  CDA28189  Alopecurus aequalis A. A. Beetle 1941-6-28 Lassen Route 36, 10 mi west of Chester 0 Comment
  UC790958  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 mi. w. Chester (Rte. 36) Comment
  CHSC112469  Alopecurus carolinianus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18731 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
  CAS-BOT-BC138010  Alopecurus geniculatus Stuart K. Harris 1960-6-23 21410 Lassen Bed of Poison Lake. 1645 Comment
  CDA43006  Alopecurus geniculatus L. Ahart, John Dittes 2008-6-2 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
Read comments
Oct 5 2019
  SEINET200168  Alopecurus geniculatus M. A. Nobs, SG Smith 1949-5-29 764 Lassen 2 mi E of Adin Comment
  UC1130818  Alopecurus geniculatus A. Simontacchi 1940-6-15 876 Lassen 6.4 mi. w.-n.w. Cone Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UCD18957  Alopecurus geniculatus Raymond D. Ratliff 1965-7-22 20 Lassen Lassen National Forest, Harvey Valley Allot. (HV 78-73). 1706 Comment
  CHSC63387  Alyssum desertorum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6310 Lassen Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. On the edge of the road. 1767 Comment
  CHSC64769  Alyssum minus subsp. micranthum Vernon H. Oswald 1995-5-31 6804 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  CHSC29942  Amaranthus blitoides Robin L. Ondricek 1978-8-2 111 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  UCD97198  Amaranthus blitoides John Thomas Howell 8-9 Jul 1974 50501 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC116090  Amaranthus californicus Lowell Ahart; John Dittes 2015-7-13 20317 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
  JEPS41028  Ambrosia acanthicarpa W. L. Jepson 1939-8-11 19379 Lassen Milford 1280 Comment
  JEPS95710  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
  SEINET3871758  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles E of Sierra Valley.; 0 1584 Comment
  CAS-BOT-BC142908  Amelanchier A. A. Heller 1938-6-4 15144 Lassen On the bank of a small stream in the pine forest a mile east of Fredonyer Pass on Highway #36. 1706 Comment
  POM253370  Amelanchier pallida A. A. Heller 1938-6-4 15144 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CAS-BOT-BC142540  Amelanchier utahensis Gary Schoolcraft 1984-6-5 1203 Lassen Upper Spencer Basin, 29-16-24 1889 Comment
  SD43502  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  UC1137669  Amelanchier utahensis George A. Fischer and Irwin H. Johnson 1933-7-14 F 270 Lassen Lassen Forest 1737 Comment
  UC506908  Amelanchier utahensis George A. Fischer and Irwin H. Johnson 1933-7-14 F 270 Lassen Lassen Forest 1737 Comment
  CAS-BOT-BC222255  Amsinckia John Thomas Howell 1934-6-10 11870 Lassen Honey Lake Valley, 24 miles s. of Susanville Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA0091257  Amsinckia macrosepala Amos Arthur Heller 1938-6-23 15204 Lassen Just outside of Johnstonville on U.S. Highway 395. Comment
  CHSC99744  Amsinckia menziesii Lowell Ahart; John Dittes 2008-6-22 15042 Lassen On the east side of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS107316  Amsinckia menziesii var. menziesii Lowell Ahart, John Dittes 2005-6-1 11899 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS88217  Ancistrocarphus filagineus Vernon H. Oswald and Lowell Ahart 1996-6-17 7797 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off of Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UC424647  Anemone occidentalis R. H. Finch Aug. 1930 Lassen <Mineral ?> Comment
  JEPS28683  Angelica breweri George W. Gillett 1957-7-26 910 Lassen Lassen Volcanic National Park, e shore of Butte Lake Butte Lake; Lassen Volcanic National Park, Butte Lake 1859 Comment
  CHSC12433  Antennaria Robert Severin 1969-6-26 22 Lassen Papoose Meadow, 4 mi s of E.L.B.S.; 1/4 mi n of Cow Camp. 1630 Comment
  CAS-BOT-BC63954  Antennaria argentea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49454 Lassen Elysian Valley, west of Janesville 1325 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-BC26644  Antennaria argentea subsp. aberrans Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC59220  Antennaria dimorpha James Jokerst 1983-5-31 1792 Lassen Grasshopper Valley Quad. Near Madeline Plains 1583 Comment
  HSC68156  Antennaria dimorpha J. P. Smith, J. O. Sawyer 1971-5-23 4657 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  CAS-BOT-BC69139  Antennaria geyeri Geo. A. Fisher 1928-6-23 31 Lassen Halls Flat 1615 Comment
  CHSC68841  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1997-7-24 8591 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  CHSC92677  Antennaria geyeri L. P. Janeway; B. Castro 2005-7-10 8478 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
  RSA713120  Antennaria geyeri L. P. Janeway, B. Castro 2005-7-10 8478 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01 1859 Comment
  CAS-BOT-BC58694  Antennaria luzuloides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16360 Lassen Near NE end of Eagle Lake Comment
  UC1137668  Antennaria luzuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 241 Lassen below Patterson R. S.; Lassen National Forest 1737 Comment
  UC1951067  Antennaria luzuloides subsp. aberrans Debra Valov 2009-4-25 2009048 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC1523728  Antennaria rosea Gary Schoolcraft 1982-7-14 800 Lassen w of Constantia 1524 Comment
  CHSC60304  Antennaria rosea subsp. confinis Mary Ann Showers 1992-6-13 2558 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  CHSC60713  Antennaria rosea subsp. confinis Vernon H. Oswald; Lowell Ahart 1993-6-14 5526 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  RSA125375  Anthoxanthum aristatum P. H. Raven, Otto T. Solbrig 1958-6-16 13228 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  CHSC34335  Aphyllon purpureum Beverley J. Wise 1969-4-29 71 Lassen 3.5 mi. north of Susanville on Round Valley rd. off Hwy 139. 1341 Comment
  JEPS49803  Apocynum androsaemifolium Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  SEINET10539684  Arabis Paul Gallian, David B. Dunn 1971-6-2 Gallian 496 Lassen Approx 22 mi s of adin on state hwy 139; in basalt. Assoc: juniper, artemisia. 1646 Comment
  UC1137671  Arabis glabra L. R. Short and Wm. Gansberg 1936-6-10 S- 422 Lassen Burgess Spring Experimental Range Lassen Forest 1850 Comment
  UC1143029  Arabis glabra L. R. Short and Wm. Gansberg 1936-7-10 S- 422 Lassen Burgess Spring Experimental Range Lassen National Forest 1850 Comment
  POM316895  Arabis rectissima Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  SEINET1912095  Arceuthobium abietinum R. L. Mathiasen 2010-1 1062 Lassen 3.8 km N of jct. of Routes 89 and 36 on Rte. 89. Ca. 3 km S of S entrance to Lassen Nat. Park 1900 Comment
  SEINET2471253  Arceuthobium abietinum R. L. Mathiasen 2008-9-26 2008 -68 Lassen 16.5 km S. of N. entrance to Lassen Nat. Park on State Rte. 89 1940 Comment
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  SDSU6214  Arctium minus D. F. Howe 1966-8-24 4297 Lassen 32 miles northeast of Litchfield on #395. 1402 Comment
  RSA38477  Arctostaphylos manzanita subsp. manzanita P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1509 Comment
  CAS-BOT-BC45900  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CHSC21058  Arctostaphylos nevadensis M. S. Taylor 1975-7-16 838 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. Comment
  HSC67173  Arctostaphylos patula J. P. Smith, J. O. Sawyer 1972-5-6 5238 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  POM101445  Arenaria congesta Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1924211  Arenaria congesta var. subcongesta Debra Valov 2004-6-9 2004272 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC584297  Arenaria congesta var. suffrutescens G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2206 Lassen just w of the town on Inspiration Point; Susanville 1280 Comment
  CAS-BOT-BC400405  Aristolochia californica Jas. McMurphy 1914-4-1 s.n. Lassen Pitt Comment
  JEPS88428  Arnica chamissonis Vernon H. Oswald and Lowell Ahart 1996-8-1 8109 Lassen sw Westwood (shore of reservoir ne of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  UC584281  Arnica chamissonis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-13 2343 Lassen Cleghorn Reservoir 1828 Comment
  UC91141  Arnica chamissonis unknown 1892-7-1 Lassen Susanville Comment
  CAS-BOT-BC82312  Arnica cordifolia H. D. Ripley; R. C. Barneby 1943-6-14 5725 Lassen Fredonyer Pass 1676 Comment
  CHSC5221  Arnica dealbata 1944-7-26 Lassen Juniper Lake. 2055 Comment
  JEPS21729  Arnica dealbata Franklin P. Nutting Lassen mts s Eagle Lake Eagle Lake Comment
  UC2027205  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen National Forest. About 1/2 mile WNW of Griffith Hill, ca 30 ft N of 30N21. Swain Mountain quadrangle 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
  JEPS109911  Arnica fulgens Dean W. Taylor 2007-6-14 20128 Lassen Upper Gooch Valley, Forest Road 35N05 (County Road 22) 0.3 miles north of junction with Forest Road 34N45 1889 Comment
  CAS-BOT-BC82678  Arnica longifolia L. S. Smith 1918-7-22 1007 Lassen Blue Lake, Modoc National Forest 1874 Comment
  UC1776712  Arnica parryi G. Schoolcraft 1994-8-2 2400 Lassen About 2 miles W of Boot Lake 2286 Comment
  UC29582  Arnica sororia M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Mts. Comment
  CDA10132  Arnica sororia Gary Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin & Madeline. Comment
  JEPS103204  Arnica sororia G. Schoolcraft 1994-6-9 2346 Lassen West of Hwy. 139 near Grasshopper valley 1706 Comment
  UCD129182  Artemisia arbuscula A. A. Beetle 1957-8-16 12766 Lassen 15 miles south of Alturas. Comment
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Jul 11 2013
  UCD129186  Artemisia arbuscula B. L. Kay 1955-4-19 s.n. Lassen 15 miles north of Honey Lake. US Highway 395. 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
  CHSC76079  Artemisia biennis Lowell Ahart; Vernon H. Oswald 1999-9-13 8213 Lassen Just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC762616  Artemisia biennis R. F. Hoover 1940-10-10 4681 Lassen Johnstonville Comment
  UCR67442  Artemisia cana George K. Helmkamp 1990-9-23 A- 5 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CHSC77186  Artemisia dracunculus G. Schoolcraft 1999-6-29 2847 Lassen East edge of Madeline Plains NE of Ravendale. 1627 Comment
  JEPS124638 Image available Artemisia lindleyana Laurie Hooker 1965-7-13 119 Lassen On highway 299 west under 2nd bridge of Pit river overflow. 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
  RSA748314  Artemisia ludoviciana subsp. ludoviciana K. M. Meyer, A. Townesmith 2007-7-19 134 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  UC1776685  Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains E of Ravendale, CA 1627 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
  CAS-BOT-BC97326  Artemisia tridentata subsp. tridentata Clare B. Hardham 1971-8-22 18395 Lassen Diamond Mountain 2346 Comment
  JEPS124637 Image available Artemisia vulgaris Dixie Funnell 1965-7-13 137 Lassen Growing under bridge about 4 feet from the water. Highway 299, under bridge 705 for pit overflow. Comment
  CAS-BOT-BC99241  Aster G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  RSA757476  Aster ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  RSA18255  Aster foliaceus var. parryi C. B. Wolf 1929-9-1 3787 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  RSA0027352  Astragalus John F. Emmel 1994-7-17 1327 Lassen Summit area of Observation Peak. 2378 Comment
  CAS-BOT-BC177438  Astragalus andersonii Alice Eastwood; John Thomas Howell 1940-6-16 8351 Lassen Omira Comment
  CAS-BOT-BC177441  Astragalus andersonii M. S. Taylor 1982-5-29 4561 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  NY791370  Astragalus andersonii A. J. Cronquist 1959-6-16 8453 Lassen 25 miles northwest of Reno Comment
  NY791371  Astragalus andersonii D. B. Dunn 1971-6-2 17802 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402.1 Comment
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  POM45143  Astragalus andersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CDA26598  Astragalus andersonii T. C. Fuller 1965-6-3 13608 Lassen Driveway to the cemetery, Janesville. 0 Comment
  NY791369  Astragalus andersonii M. J. Williams 1974-8-4 74-L- 83 Lassen About 2 miles west of Highway 395, near Highway 70 1493.5 Comment
  SEINET10450638  Astragalus andersonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17802 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine alon ghigh ridge and in sandy wash. 1402 Comment
  HSC61704  Astragalus anxius Thomas W. Nelson, Jane P. Nelson 1980-7-6 5988 Lassen In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin. Comment
  SEINET4856104  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley, ca. 25 km W of madeline, along Ash Valley Rd., on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sect. 5. 1550 Comment
  UC1483838  Astragalus anxius G. Schoolcraft 1980-8-14 307 Lassen w of Madeline; Ash Valley 1548 Comment
  UC1594460  Astragalus anxius Meinke and Lantz 1991-7-16 6108 Lassen ca 25 km w Madeline (along Ash Valley Rd.); Ash Valley 1550 Comment
  SEINET8358141  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley ca 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  JEPS699  Astragalus canadensis var. brevidens Jos. Grinnell 1929-6-13 Lassen Spaldings Island , Spaldings Island (Eagle Lake) Comment
  RSA415412  Astragalus canadensis var. brevidens Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  JEPS87396  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111,36N01) 1.9 mi n of Hwy 44 on the se edge Poison Lake; se edge Poison Lake 1709 Comment
  UC84408  Astragalus curvicarpus var. curvicarpus unknown 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC177842  Astragalus curvicarpus var. curvicarpus M. E. Jones 1897-6-24 s.n. Lassen 10 to 15 mi. w. of Amedee 1219 Comment
  CHSC118788  Astragalus filipes L. P. Janeway; B. Castro 2015-6-5 11758 Lassen Great basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC5279  Astragalus filipes L. Harman 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  JEPS117260  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS125804  Astragalus filipes William Harnach 2010-6-8 1244 Lassen Honey Lake Valley, NE of Doyle, 2 miles west of the Nevada state line on Fort Sage Road. Comment
  SEINET225940 Image available Astragalus filipes M. Lavin, K Lavin 1982-5-16 4069 Lassen 1.5 mi E of Halleujah Jct. (US 395), 22 air mi 325 degrees from Reno, W side of Peterson Mts 1676 Comment
  UCD104699  Astragalus filipes Michael A. Vincent 1999-6-9 8579 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  CAS-BOT-BC186853  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  CAS-BOT-BC186866  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1944-5-29 5951 Lassen Constantin 1371 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 Comment
  RSA38462  Astragalus gibbsii P. A. Munz 1947-5-20 11889 Lassen Milford 1265 Comment
  RSA647557  Astragalus gibbsii Marion P. Harthill 1971-6-20 220 Lassen Ravendale Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  POM24454  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET3165897  Astragalus inversus R. W. Spellenberg 2006-6-19 13744 Lassen along USFS access road 3.4 km E of Calif. Hwy. 139, the jct. of the road and highway 31 km SE of Modoca Co. line (just S of Adin) 1670 Comment
  POM23663  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CAS-BOT-BC229048  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC229050  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC187159  Astragalus lentiginosus var. floribundus Arnold Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile north of Wendel 1231 Comment
  OBI49332  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 1280 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
  HSC28508  Astragalus lentiginosus var. platyphyllidius D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19294 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CDA26707  Astragalus malacus T. C. Fuller 1963-6-11 10659 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  HSC63126  Astragalus malacus Teresa Prendusi 1980-4-28 1101 Lassen Rice Canyon 1341 Comment
  UC1128893  Astragalus obscurus A. Simontacchi 1940-5-17 748 Lassen 1.1 mi ssw Dixie Spring (Lassen National Forest); Halls Flat Quad., , ssw of Dixie Sprin Comment
  CHSC98309  Astragalus pulsiferae var. coronensis R. Ondricek-Fallscheer 2003-6-7 210 Lassen About 27 air mi NE of Susanville, 9 air mi SSE of Ravendale, and 0.5 air mi NW of Rye Patch Springs; 0.5 mi E of Hwy 395 and 150 ft. N of road to Ramhorn Springs Campground. 1615 Comment
  NY694120  Astragalus pulsiferae var. coronensis N. H. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  RSA111760  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 Comment
  UC372929  Astragalus pulsiferae var. pulsiferae Marcus E. Jones, A. M. 1897-6-19 Lassen Chat 1615 Comment
  CAS-BOT-BC194093  Astragalus purshii var. purshii Doris Kildale Gillespie 1930-5-12 9335 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC194091  Astragalus purshii var. purshii Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  JEPS103211  Astragalus whitneyi var. confusus G. Schoolcraft 1985-5-22 1396 Lassen Along A2 about 5 miles south of Adin, CA. 1341 Comment
  SEINET10490007  Astragalus whitneyi var. confusus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17770 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc. 1372 Comment
  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
  CHSC76091  Atriplex argentea var. mohavensis Lowell Ahart; Vernon Oswald 1999-9-13 8207 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  UC7062  Atriplex confertifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3274 Lassen Honey Lake Valley 1219 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
  CAS-BOT-BC106555  Balsamorhiza John Thomas Howell 1976-7-20 52011 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek - Sierra Nevada 1432 Comment
  CAS-BOT-BC106488  Balsamorhiza hookeri David D. Keck; J. Clausen 1935-6-24 3747 Lassen 2 mi. S. of Ravendale, in light sandy clay soil with some rock. 1463 Comment
  CAS-BOT-BC106496  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-13 9363 Lassen Between Susanville and Janesville Comment
  CHSC67422  Balsamorhiza macrolepis var. platylepis James D. Jokerst 1991-5-29 3300 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
  UC1036000  Balsamorhiza sagittata Helen K. Sharsmith 1955-6-22 4499 Lassen 5 mi beyond Blue Lake on the road to Likely Blue Lake (Warner Mountains, Modoc National Forest); Modoc National Forest, Warner Mountains 1767 Comment
  UC1119027  Balsamorhiza sagittata H. P. Hagge 1929-9-11 20 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  SEINET11193258  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, intersection of Hwy 139 and Eagle Lake Road. 1494 Comment
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CHSC99275  Beckmannia syzigachne Lowell Ahart; John Dittes 2008-6-20 14946 Lassen In swales, 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
  RSA385883  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale; lower slopes of Observation Peak Comment
  SEINET3100770 Image available Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles W of highway 395 on highway 70 then 5.5 road miles N on Scott Road. 1490 Comment
  CAS-BOT-BC169399  Betula glandulosa M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  UC5376  Betula glandulosa M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  RSA504677  Betula nana Bruce Bartholomew, B. Anderson 1988-7-22 4500 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  CHSC112972  Bidens cernua Lowell Ahart; John Dittes 2013-7-23 18897 Lassen Along the south margin of the levee road, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC30552  Bidens cernua J. Burtt Davy Jun 17 1897-Jun 24 1897 3309 Lassen Tule Confederacy Comment
  CHSC65292  Bidens cernua var. cernua Vernon H. Oswald 1995-8-21 7205 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. 1859 Comment
  CAS-BOT-BC128033  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC128048  Blepharipappus scaber A. M. Vollmer; L. Beane 1953-7-1 99 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC128050  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3725 Lassen 5 mi. S. of Likely (Modoc Co.) 1402 Comment
  CHSC117222  Blepharipappus scaber Lowell Ahart; John Dittes 2016-6-7 20977 Lassen 20 yards west of the pond, along the road to the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC4444  Blepharipappus scaber K. R. Stern 1967-7-1 2444 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  CHSC64750  Blepharipappus scaber Vernon H. Oswald 1995-5-31 6794 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  JEPS126561  Blepharipappus scaber Lowell Ahart, John Dittes 2016-6-7 20977 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 (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS22625  Blepharipappus scaber R. F. Hoover 1940-9-28 4633 Lassen Susanville Comment
  UC1143001  Blepharipappus scaber August L. Hormay 1934-5-15 Lassen 1 mi n of Eldrigde's 1554 Comment
  CAS-BOT-BC127955  Blepharipappus scaber Dr. Jean Linsdale 1929-6-9 s.n. Lassen Pete's Valley Comment
  CAS-BOT-BC128031  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo Comment
  CDA10533  Blepharipappus scaber T. C. Fuller 1963-6-1 10620 Lassen Road to Susanville, 2.0 miles south of Pittville. 0 Comment
  RSA637596  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land, Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), S of BLM road 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  UC1181375  Blepharipappus scaber R. W. Thorp and G. I. Stage 1960-6-11 60 -63 Lassen 6.5 mi north of Termo Comment
  CAS-BOT-BC16148  Boechera covillei John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50672 Lassen Sierra Nevada. Summit ridge of Diamond Mountain. 2346 Comment
  CHSC75356  Boechera puberula Vernon H. Oswald 1999-5-7 9725 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
  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-BC25510  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 miles west of Madeline. 1584 Comment
  CHSC99133  Boechera retrofracta Lowell Ahart; John Dittes 2008-6-19 14884 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
  CHSC68746  Boechera sparsiflora Vernon H. Oswald; Lowell Ahart 1997-5-27 8512 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 1.4 mi east of Hwy. 139. Roadside. 1645 Comment
  CAS-BOT-BC25707  Boechera sparsiflora H. D. Ripley; R. C. Barneby 1943-6-13 5702 Lassen South of Gifford. 1569 Comment
  JEPS103163  Bolboschoenus maritimus B. Corbin and D. Armentrout 2002-9-4 1098 Lassen Biscar Reservoir, upper pond. 1357 Comment
  SEINET8193957  Brodiaea congesta J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch. Comment
  UC1137774  Brodiaea coronaria subsp. coronaria August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest 1706 Comment
  CAS-BOT-BC457056  Brodiaea coronaria subsp. coronaria Ella Dales Cantelow 1940-5-31 3919 Lassen East of McArthur, Hy. 299 Comment
  SEINET201569  Brodiaea coronaria subsp. coronaria Arthur Cronquist 1959-6-18 8485 Lassen 5 miles south of Adin Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
Read comments
Jun 19 2008
  CHSC7689  Bromus briziformis Beverley J. Wise 1969-5-16 125 Lassen 34.5 mi. S. E. of Susanville on Co. Rd 320. (Stacey) 1584 Comment
  SEINET222548 Image available Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8909 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak 28 km east of Ravendale and 22.5 km airlin 1680 Comment
  SEINET230396 Image available Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road 3.4 km east of US Hwy 395 14.5 km airline distance southest of Ravendale. 1700 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
  UC1143035  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1820 Comment
  UCD32659  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD59098  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  CAS-BOT-BC155938  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CHSC75564  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1999-6-9 9750 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Along a drainage below the dam of the reservoir. 1353 Comment
  UCD32667  Bromus commutatus Beecher Crampton 1954-7-5 2067 Lassen Lassen County, 5 miles west of Susanville. 1447 Comment
  UCD58457  Bromus commutatus A. A. Beetle 1941-6-28 2810 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  UC70688  Bromus inermis subsp. inermis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CHSC92831  Bromus japonicus Lowell Ahart; John Dittes 2005-6-1 11865 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UCD32672  Bromus japonicus Beecher Crampton 1954-7-6 2076 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  UC1024917  Bromus racemosus Leo Whitney 1935-6-28 3361 a Lassen Bieber Comment
  CHSC112781  Bromus tectorum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18751 Lassen Drainage filled with dirt from the construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC13497  Bromus tectorum J. Pitts 1972-6-22 244 Lassen 50 yds. n of Eagle Lake Biology Station. Comment
  JEPS107312  Bromus tectorum Lowell Ahart, John Dittes 2005-6-1 11909 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  RSA126866  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S- 409 Lassen Burgess Spr. Exp. Range; Lassen Forest. 1860 Comment
  UC604684  Bromus tectorum Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  UCD59855  Bromus tectorum A. A. Beetle 1941-6-28 2796 Lassen 10 miles W of Chester, rte 36. Comment
  UC1142960  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Westwood Junction Lassen National Forest 1737 Comment
  JEPS114632  Calandrinia ciliata Lowell Ahart, John Dittes 2008-6-22 15030 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  POM312337  Callitriche verna Verne Grant, H. L. Mason 1947-7-9 13294 Lassen 5 miles E of Bieber. Comment
  CHSC4430  Calochortus leichtlinii K. R. Stern 1967-7-1 2473 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  CAS-BOT-BC483439  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  POM109600  Calochortus macrocarpus Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkins Ranch 1524 Comment
  HSC22969  Calochortus macrocarpus var. macrocarpus John Pratt 1970-6-4 62 Lassen Susanville Comment
  CHSC30590  Calyptridium umbellatum Marc Held 1972-6-29 22 Lassen North end of Dean's Meadow. Comment
  SEINET11931593  Calyptridium umbellatum Unknown 1978-1 5 Lassen Colman L., S of Eagle L 1963 Comment
  JEPS88237  Calystegia occidentalis subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-17 7811 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Highway 36 ca. 7 mi W of Susanville. Modoc Plateau. Comment
  RSA0017409  Calystegia occidentalis subsp. occidentalis Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  HSC22954  Camassia quamash subsp. breviflora John Pratt 1970-6-21 32 Lassen Seasonally flooded lake edge 1707 Comment
  CHSC64770  Camelina microcarpa Vernon H. Oswald 1995-5-31 6807 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  UC180090  Camissonia contorta Milo S. Baker 1890-1 Lassen Milford 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
  CHSC71092  Camissonia pubens Vernon H. Oswald; Lowell Ahart 1998-5-22 9136 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. Roadside banks. 1341 Comment
  HSC86885  Camissonia tanacetifolia R. Carter 1967-6-23 547 Lassen Upper part of Murrer's Meadow Comment
  NY852074  Camissonia tanacetifolia Mrs. C. C. Bruce 06 1898 2203 Lassen Susanville Comment
  SEINET10492095  Camissonia tanacetifolia David B. Dunn, Paul Gallian 1971-6-2 Dunn 493 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc; juniper artemesia. 1646 Comment
  CAS-BOT-BC160861  Camissonia tanacetifolia subsp. tanacetifolia Raymond Nelson 1962-8-25 s.n. Lassen Lassen Volcanic National Park. On the east shore of Snag Lake Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  UC117814  Cardamine nuttallii var. covilleana Brandegee 1892-7-2 Lassen Susanville Comment
  CDA3662  Cardaria chalepensis T. C. Fuller 1964-10-7 12695 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 1 mile southwest of Nubieber. 0 Comment
  JEPS94075  Cardaria pubescens Vernon H. Oswald and Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on County Rd. 91 (Bieber-Lookout Rd.)) 1258 Comment
  JEPS124368  Carduus nutans Lowell Ahart, John Dittes, Joe DiSalvo 2015-7-14 20322 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC89753  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. Roadside ditch. 1790 Comment
  CAS-BOT-BC17909  Carex angustata Leo Whitney 1934-7-31 1972 Lassen Bridge Creek Camp. 1737 Comment
  UC142947  Carex angustata A. L. Hormay 1941-6-18 5 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 Comment
  CHSC110089  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  UC2046018  Carex deflexa var. boottii Nick Otting and Dick Brainerd 2003-7-15 683 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 air miles south-southwest of Susanville. Comment
  POM80803  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CDA33057  Carex densa T. C. Fuller 1966-7-2 14963 Lassen South side of road to Pittsville, 5.4 miles west of Little Valley Post Office. Northwest part of county. 0 Comment
  UC1776677  Carex douglasii G. Schoolcraft 1995-5-22 2486 Lassen East of Skedaddle Ranch 1554 Comment
  UC190412  Carex douglasii M. S. Baker and Frank Nutting 1894-7-5 Lassen Mts. s Dixey Valley Comment
  CAS-BOT-BC19776  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Plumas National Forest. Milford Ranger District. East side of saddle, ca. 0.8 mile northeast of Meadowview Peak. 1981 Comment
  CHSC68772  Carex filifolia var. erostrata Vernon H. Oswald; Lowell Ahart 1997-5-27 8510 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  HSC48223  Carex filifolia var. erostrata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19171 Lassen Harvey Valley near Cone Springs Comment
  JEPS118277  Carex filifolia var. erostrata Lowell Ahart, John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1133498  Carex filifolia var. erostrata Robert W. Gardner 1939-7-6 G- 30 Lassen Grass Valley Halls Flat Quadrangle Comment
  UC1609197  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  CAS-BOT-BC22350  Carex filifolia var. filifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49194 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC21303  Carex fracta John Thomas Howell; Gordon H. True 1973-7-31 50047 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  HSC103600  Carex fracta Thomas W. Nelson, Jane Nelson 1985-8-10 8011 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC22275  Carex hassei John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49477 Lassen Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC22236  Carex haydeniana John Thomas Howell 1934-6-14 12164 Lassen Near Lost Lake. Warner Mountains. 2438 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
  SEINET7562451 Image available Carex integra L. P. Janeway 2003-7-24 7916 Lassen Swain Mountain 7.5' quad. High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21. Drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  HSC95182  Carex interior Gordon Leppig 1998-8-17 1055 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC35781  Carex jonesii J. T. Howell 1934-6-14 12164 A Lassen Warner Mts.; near Lost Lake 2438 Comment
  CHSC76848  Carex lenticularis var. lipocarpa L. P. Janeway; Loren Gehrung 1999-10-9 6594 Lassen High Cascade Range. In southwestern arm of Caribou Lake, 1995 Comment
  CAS-BOT-BC31697  Carex mariposana John Thomas Howell; Gordon H. True 1973-7-31 50045 Lassen On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CHSC110970  Carex nebrascensis Lowell Ahart; John Dittes 2012-7-9 18298 Lassen Scattered along a small drainage, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northest of Bieber, Big Valley. 1267 Comment
  CHSC66271  Carex nebrascensis Vernon H. Oswald; Lowell Ahart 1996-6-24 7882 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. Meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  JEPS114767  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-20 14953 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC1142949  Carex nebrascensis A. L. Hormay 1941-6-18 7 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  RSA201569  Carex nebrascensis 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
  UCD140685  Carex nebrascensis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CHSC65364  Carex pellita Vernon H. Oswald 1995-8-21 7209 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. 1859 Comment
  CHSC66270  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-24 7892 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the southern-most spring on the E side of the meadow 1633 Comment
  CHSC66413  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-17 7809 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  CHSC66738  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-8-1 8110 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  JEPS28385  Carex pellita George W. Gillett 1957-7-26 906 Lassen e shore Butte Lake 200 yards beyond outlet; Lassen Volcanic National Park, Butte Lake 1844 Comment
  CHSC89743  Carex petasata L. P. Janeway 2004-6-26 8139 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  SEINET4292243 Image available Carex petasata Unknown 2004-1 8139 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. Swains Hole 7.5' quad. Comment
  UC1136943  Carex petasata George A. Fischer, Irwin H. Johnson 1933-7-12 F 235 Lassen Patterson Flat Lassen Forest 1737 Comment
  UC506938  Carex petasata George A. Fischer, Irwin H. Johnson 1933-7-12 Lassen Patterson Flat Lassen National Forest 1737 Comment
  SEINET10817202  Carex phaeocephala Willard W. Eggleston 1927-7-11 Eggleston 21474 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  CAS-BOT-BC118399  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49193 Lassen Elysian Valley, northwest of Janesville. 1325 Comment
  JEPS107836  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11879 Lassen about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 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
  SEINET13694793  Carex praegracilis B. L. Wilson, P. Zika 2011-8-7 16802 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  CAS-BOT-BC118741  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49469 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC118615  Carex raynoldsii George Wilson Gillett 1957-7-29 948 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  JEPS28380  Carex raynoldsii George W. Gillett 1957-7-29 948 Lassen along trail between Butte Lake and Sang Lake; Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC118029  Carex rossii John Thomas Howell; Gordon H. True 1959-9-23 s.n. Lassen N end of Juniper Lake, Lassen Park. 2057 Comment
  HSC48221  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19176 Lassen Harvey Valley near Cone Springs Comment
  CHSC74311  Carex simulata James D. Jokerst 1991-5-28 3296 Lassen Survey for reroute of Hwy. 139 at the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. Modoc Plateau. 1554 Comment
  HSC95305  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 514 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  HSC97395  Carex straminiformis L. P. Janeway 2003-7-24 7917 Lassen High Cascade Range, along FS 30N14, 1.1 km from FS 30N21, upper Susan River, 4.7 mi. W of Clover Valley 1932 Comment
  CAS-BOT-BC116624  Carex subfusca John Thomas Howell 1973-7-10 49779 Lassen Fredonyer Pass. 1737 Comment
  CHSC77246  Carex subfusca G. Schoolcraft 1998-7-7 2754 Lassen Along Pine Creek NE of Fredonyer Peak. 1645 Comment
  CAS-BOT-BC116616  Carex subfusca B. Clear 1938-7-13 s.n. Lassen Dersch Meadows, Lassen Park. 2016 Comment
  CHSC76792  Carex utriculata L. P. Janeway 1999-9-5 6580 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  HSC95286  Carex vesicaria Gordon Leppig 1998-8-17 1039 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA33174  Carex vesicaria var. vesicaria Gordon Leppig 1998-8-17 1040 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CAS-BOT-BC114878  Carex whitneyi J. Stebbins 1974-7-18 s.n. Lassen Roop Mountain. 2133 Comment
  CAS-BOT-BC248971  Castilleja Margaret M. Hanna 1956-6-3 943 Lassen 2 mi. West of Nubieber Comment
  CHSC93566  Castilleja angustifolia Lowell Ahart; John Dittes 2005-6-2 11941 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  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
  UC585181  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1759 Lassen e of Red Rock (nw side of summit of ridge) 1828 Comment
  CHSC106084  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
  UC1035996  Castilleja applegatei subsp. pinetorum Helen K. Sharsmith 1955-6-22 4495 Lassen 5 mi beyond Blue Lake (on the road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UC1063044  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  CHSC60921  Castilleja campestris subsp. campestris Vernon H. Oswald; Lowell Ahart 1993-7-8 5644 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 22N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  CHSC115227  Castilleja chromosa B. Castro; L. P. Janeway. 2015-6-5 2094 Lassen Great Basin. Near the SE corner of the Warner Mtns. Along W side of Tuledad Toad ca 3 air mi NE of Dodge Reservoir and 0.5 road-mi S of W end of Tuledad Canyon, on gentle NE-facing slope. 1661 Comment
  JEPS74943  Castilleja lacera T. I. and F. M. Chuang 1975-7-23 7556 Lassen just w Westwood (area of golf course) Comment
  JEPS88512  Castilleja lacera Vernon H. Oswald and Lowell Ahart 1996-6-24 7842 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  JEPS79153  Castilleja lemmonii L. R. Heckard with R. Bacigalupi 1980-6-12 5260 Lassen ne Westwood (near golf course) 1554 Comment
  JEPS62836  Castilleja linariifolia John Weiler 1970-7-8 70240 Lassen n shore Eagle Lake Comment
  UC26450  Castilleja linariifolia Milo S. Baker 1894-7-25 Lassen Eagle Lake 1524 Comment
  CDA41236  Castilleja linariifolia T. C. Fuller 1980-8-5 20313 Lassen Along east side of Tuledad Road, 7.4 km. southeast of the campground on the east shore of Dodge Reservoir, northeast of Ravendale. 0 Comment
  CAS-BOT-BC244892  Castilleja miniata John Thomas Howell 1934-7-10 12559 Lassen Black's Mt. Comment
  UC485781  Castilleja miniata H. E. and S. T. Parks Jun 1928 250 Lassen Drakesbad; Lassen National Park Comment
  CAS-BOT-BC244887  Castilleja miniata Alice Eastwood 1912-8-22 1784 Lassen trail from Morgans Springs to Sulphur Works. Lassen Butte Region. Comment
  RSA505356  Castilleja miniata R. C. Bacigalupi, G. Thomas Robbins 1955-7-20 5402 Lassen Along East Creek on grade 2.3 miles south of and below Patterson Ranger Station (and 0.8 mile s. of Lassen - Modoc County line). Southern end of the Warner Mts. 2012 Comment
  CHSC81564  Castilleja minor subsp. minor Vernon H. Oswald 2001-9-26 10058 Lassen Dakin Unit of Honey Lake Wildlife Area. 1219 Comment
  CHSC12962  Castilleja pilosa K. R. Stern 1974-6-26 5871 Lassen Open sagebrush scrub adjacent to Pine Creek, 3.7 mi n of intersection between County Rd. A-21 to Westwood and Hwy. 44, on e side of Hwy. 44. Comment
  HSC26597  Castilleja pilosa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19190 Lassen Harvey Valley near Cone Springs Comment
  CHSC4433  Castilleja tenuis K. R. Stern 1967-7-1 2466 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  JEPS4336  Castilleja tenuis Brown and Wieslander 1922-7-18 36 Lassen Martin Springs; Eagle Lake Comment
  JEPS96025  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1996-6-24 7841 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  RSA0105574  Castilleja tenuis Lowell Ahart, John Dittes 2013-7-22 18840 Lassen About 30 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1520675  Castilleja tenuis Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9483 Lassen 4.6 mi s Ravendale (U.S. Hwy 395) 1615 Comment
  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
  JEPS123842  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2015-7-14 20329 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC48533  Ceanothus cordulatus G. Schoolcraft 1988-7-11 1823 Lassen Along Hwy. 44 ca 5 miles n. of Hwy. 36 intersect. Susanville, California 1676 Comment
  UCD111387  Ceanothus cordulatus C. B. Heiser Jr. 1947-7-13 s.n. Lassen near Westwood. Comment
  CAS-BOT-BC52048  Ceanothus prostratus John Thomas Howell 1976-7-19 51982 Lassen on Gold Run Creek Southwest of Susanville 1386 Comment
  CHSC30565  Ceanothus prostratus Sori H. Shad 1970-7-9 22 Lassen Found in Pine area 6 mile east of E.L.B.S. 1524 Comment
  HSC22955  Ceanothus velutinus John Pratt 1970-6-21 28 Lassen 1738 Comment
  JEPS42164  Ceanothus velutinus Brown and Wieslander 1921-9-1 83 Lassen Martin Sring Eagle Lake Comment
  CAS-BOT-BC277000  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  CDA7341  Centaurea squarrosa Loring White Jul 1950 Lassen Kramer Ranch, Big Valley, just over line Modoc-Lassen. 0 Comment
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May 19 2009
  CDA7344  Centaurea squarrosa Loring White 1950-8-19 Lassen Cramer Ranch. Big Valley. 0 Comment
  CDA7335  Centaurea squarrosa T. C. Fuller 1959-10-15 3125 Lassen East of Pitt River, road to Lookout, ca. 2 miles north of Bieber. 0 Comment
  UC1533151  Centaurea virgata subsp. squarrosa G. Schoolcraft 1986-7-28 1666 Lassen about 3.5 mi SW of Nubieber (along Hwy 299) 1402 Comment
  CAS-BOT-BC106074  Centaurea virgata subsp. squarrosa Barrett Anderson 1986-7-9 3128 Lassen Road to Day, about 2.4 km N of Rte 299. 1065 Comment
  RSA153397  Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley Comment
  SEINET13331057 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  UCD130124  Centaurea virgata subsp. squarrosa Dan Marcum 1980-8-24 s.n. Lassen Big Valley. Comment
  JEPS46972  Centaurium exaltatum W. L. Jepson 1918-8-2 7759 Lassen Beckwith Pass 1463 Comment
  UC35451  Centaurium exaltatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3392 Lassen Honey Lake Valley Comment
  SEINET7379749 Image available Centromadia pungens M. J. Williams, G. Smith 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  CAS-BOT-BC388151  Cerastium fontanum John Thomas Howell; Gordon H. True 1973-8-1 50162 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC388153  Cerastium fontanum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49480 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC388199  Cerastium fontanum subsp. vulgare John Thomas Howell 1976-7-19 51990 Lassen On Gold Run Creek southwest of Susanville 1386 Comment
  CAS-BOT-BC400181  Ceratophyllum demersum Milo S. Baker July 25 3644 a Lassen Eagle Lake Comment
  CAS-BOT-BC400183  Ceratophyllum demersum D. Toren; B. Trowbridge 1975-6-19 5183 Lassen Blue Lake 1828 Comment
  SDSU8985  Cercocarpus betuloides D. F. Howe 1961-8-4 3134 Lassen 11.5 miles east of McArthur on US 299. 1372 Comment
  UCD22434  Cercocarpus betuloides var. betuloides Brian Vanden Heuvel 2003-4-10 196 Lassen Shasta National Forest. East slope of Big Valley Mountains. 0.7 miles north of CA 299 on Foothill Road (Four Corners Road), just east of the road. Comment
  POM89499  Cercocarpus ledifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC143806  Cercocarpus ledifolius var. ledifolius George W. Gillett 1957-7-26 902 Lassen Butte Lake 1844 Comment
  CHSC21174  Cercocarpus ledifolius var. ledifolius M. S. Taylor 1974-5-4 226 Lassen Scattered on e side of marsh, ca. 1/2 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. Comment
  UC764012  Cercocarpus ledifolius var. ledifolius R. F. Hoover 1940-9-21 4604 Lassen 4 mi w of Susanville Comment
  CHSC80142  Chaenactis douglasii Jeanne Boze 1981-6-11 102 Lassen Along roadside, 5.5 mi from Hwy 139 on Horse Lake Road. 1676 Comment
  CDA19743  Chaenactis douglasii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Between Ravendale and Secret Valley. 0 Comment
  CHSC4855  Chaenactis douglasii var. douglasii R. Carter 1967-7-13 586 Lassen On s side of rd. On the rd to Eagle Lake Biology Station and Willow Creek. 1584 Comment
  CHSC98581  Chaenactis douglasii var. douglasii B. Castro; L. P. Janeway 2005-7-10 1494 Lassen Northern High Sierra Nevada. Crest of the Diamond Mtns, overlooking Janesville and Honey Lake, 0.15 mi N of Rd 28N01 and 0.4 mi E of its junction with Janesville Grade (Rd 29N01/Rd 208). Knoll on N side of crest, in soft decomposed granite soil among rounded granite boulders. 1859 Comment
  UC579800  Chaenactis douglasii var. douglasii David D. Keck and J. Clausen 1935-6-25 3755 Lassen just w of town Susanville 1300 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
  CAS-BOT-BC276611  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-24 3737 Lassen 2 miles S of Ravendale 1464 Comment
  CAS-BOT-BC276613  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-25 3755 Lassen Susanville, just W of town 1300 Comment
  CHSC64751  Chaenactis stevioides Vernon H. Oswald 1995-6-7 6839 Lassen Modoc Plateau. Ridge on the n side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi e of Wendel, ne of Susanville. 1261 Comment
  JEPS107309  Chaenactis stevioides Lowell Ahart, John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction 1460 Comment
  CHSC19727  Chamaebatiaria millefolium Mary E. Meyer 1973-7-7 14 Lassen Located west of ELBS water tower. Comment
  POM451345  Chamaebatiaria millefolium J. T. Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  UC526157  Chamaebatiaria millefolium John Thomas Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  UC747012  Chamaebatiaria millefolium G. Thomas Robbins 1945-10-6 2151 Lassen nw slope ofCrater Lake Mountain, Lassen National Forest Crater Lake Mountain; Lassen National Forest, Crater Lake Mountain 1981 Comment
  UCD112951  Chamaebatiaria millefolium Al Franklin 1987-7-7 87 - Lassen Eagle Lake Field Station, east shore of Eagle Lake, N of Susanville. 1584 Comment
  CHSC36474  Chamaesaracha nana Jeffrey R. Peek 1982-6-4 35 Lassen Jct of rd e of Murrers Upper Meadow and road going to Dry Lakes. Comment
  UC1776692  Chamaesaracha nana G. Schoolcraft 1999-6-29 2849 Lassen E. edge of Madeline Plains about 9 miles NE of Ravendale, CA 1615 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
  CHSC65310  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1995-8-14 7178 Lassen Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  UC1481746  Cheilanthes Milo S. Baker 1894-7-5 2 a Lassen Dixie Mts Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  CHSC112973  Chenopodium album Lowell Ahart; John Dittes 2013-7-22 18859 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS95711  Chenopodium album Vernon H. Oswald and L. Ahart 1995-8-14 7180 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 Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  UC1949078  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment
  JEPS97785  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CAS-BOT-BC426335  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  CDA23382  Chenopodium leptophyllum M. K. Bellue 1938-8-1 Lassen Butte Lake. 0 Comment
  CHSC6236  Chimaphila umbellata P. Balch 1955-7-22 Lassen Roadside between Eagle Lake and Pittville Road. 1676 Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  POM105904  Chorizanthe watsonii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  UC149174  Chorizanthe watsonii T. S. Brandegee Lassen Honey Lake Comment
  UCSB17200  Chorizanthe watsonii Hardham, Clare 1961-6-17 Lassen Baxter Cr. south of Susanville, Sierra Nevada Mountains 1524 Comment
  CAS-BOT-BC36277  Chrysolepis sempervirens John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49413 Lassen Elysian Valley, west of Janesville 1325 Comment
  SEINET10730905  Chrysolepis sempervirens Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 841 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10. T31N R7E S35 NW 1/4. 1980 Comment
  CDA46  Chrysothamnus albidus O. W. Newman Aug 1915 s.n. Lassen Susanville. Comment
  CDA19740  Chrysothamnus viscidiflorus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  CHSC77190  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  UCR268964  Chrysothamnus viscidiflorus subsp. puberulus Jim Andre 2013-7-12 31420 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  CAS-BOT-BC105908  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 1271 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CHSC65296  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald 1995-8-14 7183 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Roadside. 1645 Comment
  RSA22626  Chrysothamnus viscidiflorus subsp. viscidiflorus Mary DeDecker 1955-8-25 263 Lassen Honey Lake: Highway 395. Comment
  JEPS29747  Chylismia claviformis subsp. cruciformis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8502 Lassen 2 mi e Wendel junction (on road past Flanagan to Pyramid Lake, Nevada, in low areas n of Honey Lake) 1219 Comment
  UC1299430  Chylismia claviformis subsp. integrior Freed W. Hoffman 1946-6-8 728 Lassen s end Madeline Plains Comment
  SEINET10725178  Cichorium intybus Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 133 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CHSC115576  Cirsium Lowell Ahart; John Dittes, Joe DiSalvo 2015-7-14 20322 Lassen On the south side of the levee road, about 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1260 Comment
  UC1119176  Cirsium andersonii H. P. Hagge 1929-9-14 32 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  UCD159574  Cirsium arvense D. S. Park 2011-6-27 311 -1 Lassen East of Westwood. Growing near Willard Creek. Comment
  CDA1128  Cirsium canescens G. D. Barbe 1982-7-13 3881 Lassen Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd. 0 Comment
  CAS-BOT-BC278006  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8308 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC278011  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen 7 mi N/road to Karlo Comment
  JEPS30797  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13303 Lassen along US Hwy 395 8.0 mi n Madeline Comment
  CAS-BOT-BC278090  Cirsium douglasii var. breweri Hans Leschke 1960-9-8 1803 Lassen Lassen Volcanic National Park. Little Hot Springs Valley 2225 Comment
  CDA1261  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 -C Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  CAS-BOT-BC285579  Cirsium occidentale var. candidissimum John Thomas Howell 1934-7-11 12563 Lassen Eldridge, 10 miles se. of Fall River Mills Comment
  CDA1529  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14200 Lassen Madeline Plains E base of Dry Valley Ridge, 10 mi. W of Termo, 3 mi N of Termo-Grasshopper Rd. 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-BC286310  Cirsium scariosum James Jokerst 1983-7-25 1894 Lassen Near Madeline Plains 1614 Comment
  CDA36753  Cirsium scariosum D. B. Joley 1976-6-16 10 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  UC1037273  Cirsium scariosum var. americanum Leo Whitney 1934-7-8 1765 Lassen meadow near Harvey Spring (ca. 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  CDA37717  Cirsium undulatum Breckenridge/Mitchell 2007-7-11 s.n. Lassen Madeline Plains, along Westside Road, from historic Basque homestead. 0 Comment
  CAS-BOT-BC285730  Cirsium vulgare John Thomas Howell; Gordon H. True 1973-8-1 50160 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC169804  Cistanthe rosea H. D. Ripley; R. C. Barneby 1943-6-18 5464 Lassen Smoke Creek, NE of Viewland 1402 Comment
  LA47494  Clarkia gracilis subsp. albicaulis Clare B. Hardham; 1961-6-16 7485 Lassen Gold Run Creek, S of Susanville Comment
  CHSC27720  Clarkia lassenensis Robert A. Schlising; S. Morey, D. Ikeda 1978-6-8 3284 Lassen E of Eagle Lake, on slopes between Lower Dry Lake and Murrers Upper Meadow. 1569 Comment
  CHSC9542  Clarkia lassenensis A. W. Harvilik 1967-6-30 18 Lassen Collected near the junction of rd. 5.19 and the rd. to Murrer's Meadow. 1524 Comment
  UC1137738  Clarkia rhomboidea George A. Fischer, Irwin H. Johnson 1933-7-14 F 246 Lassen Lassen National Forest 1767 Comment
  CHSC36439  Clarkia stellata Dave Leuck 1981-6-16 20 Lassen Subway Cave on Hwy 44. Comment
  CAS-BOT-BC439760  Claytonia rubra subsp. depressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49179 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC112426  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18742 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
  CHSC71096  Claytonia rubra subsp. depressa Vernon H. Oswald; Lowell Ahart 1998-5-22 9124 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Locally abundant in moist soil along a drying streamlet in a shallow ravine eroded in granitic boulders. 1463 Comment
  NY222741  Cleome platycarpa D. W. McNeal 1978-5-30 2123 Lassen Along Hwy. #395, 3.4 mi. N of the jct of Co. Hwy. #320 (Wendel Rd.) at the Nobel Emigrant Trail Historical Marker. Comment
  UC1567444  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi n Wendel Rd. (along Skedaddle Ranch Rd) 1463 Comment
  UCD150400  Cleomella plocasperma Harry A. George and F. K. 1957-8-15 s.n. Lassen Honey Lake Wildlife Area, Dakin Unit. Comment
  CDA34520  Collinsia parviflora B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  HSC68935  Collinsia parviflora Gary Schoolcraft 1979-5-1 15 Lassen Along road between Big Springs and Shearing Corrals 1677 Comment
  RSA128300  Collinsia torreyi Peter H. Raven, Otto T. Solbrig 1958-6-16 13249 Lassen 4.5 miles east of Westwood on Hwy 36. Comment
  JEPS21731  Collinsia torreyi var. torreyi L. R. Short 1936-6-25 S- 455 Lassen Burgess Spr. Exp. Range; Lassen Forest 1752 Comment
  CHSC59776  Collomia grandiflora Mary Meyer 1980-5-15 Lassen On slopes near creek along Secret Creek Canyon. 1371 Comment
  SBBG58193  Collomia grandiflora E. Rockwell -Jun-1925 802 Lassen Eagle Lake 1554 Comment
  CHSC6199  Collomia tinctoria J. B. Kimsey 1946-6-13 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  JEPS28714  Collomia tinctoria George W. Gillett 1957-7-29 949 Lassen along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  SBBG58209  Collomia tinctoria E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 Comment
  UC1123659  Collomia tinctoria A. Simontacchi 898 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quadrangle Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  SEINET7127328  Convolvulus arvensis M. J. Williams 1974-7-29 74 -L-57 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  CAS-BOT-BC286116  Conyza canadensis John Thomas Howell 1974-7-8 50503 Lassen Susanville 1295 Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC1122744  Cornus sericea subsp. sericea C. W. Hanks 1934-9-26 92 Lassen w. side Long Valley (near Plumas Nat'l Forest); Sierraville Quad., Long Valley Comment
  UC303067  Corydalis caseana subsp. caseana Pearl Safford Lassen Susanville [uncertain locality] Comment
  RSA699966  Crepis acuminata L. P. Janeway 2001-6-20 7197 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1510 Comment
  UC1118030  Crepis acuminata A. Simontacchi 1940-6-23 888 Lassen 3.3 mi sw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC581214  Crepis acuminata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1736 Lassen on mountain above Red Rock (e-facing slope of gully) 1420 Comment
  UC581283  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2314 Lassen about a mi below summit; Black Mountain 1940 Comment
  UC581294  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2346 Lassen about 4 mi se Willow Creek Range Station (se of Adin) 1767 Comment
  CAS-BOT-BC290392  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2294 Lassen South slope Thompson Peak, south of Janesville 2133 Comment
  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
  SJSU8354  Crepis intermedia W. Savage 1971-7-20 725 Lassen c. 2 mi N of Milford near W side Honey Lake 1264 Comment
  POM230914  Crepis monticola G. Ledyard Stebbins, J. A. Jenkins 1937-7-6 2193 Lassen Susanville, just west of the town, on 'Inspiration Point' Comment
  UC581297  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-7 2196 Lassen Inspiration Point Susanville (just w of town) Comment
  UCD130971  Crepis occidentalis B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  CHSC60814  Crepis occidentalis subsp. conjuncta Vernon H. Oswald; Lowell Ahart 1993-6-28 5606 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  CAS-BOT-BC376489  Crepis occidentalis subsp. conjuncta G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2319 Lassen Black Mountain about a mile below the summit 1940 Comment
  UC581316  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2221 Lassen 6 mi s Ravensdale 1676 Comment
  CAS-BOT-BC290750  Crepis occidentalis subsp. occidentalis Doris Kildale Gillespie 1930-5-12 9337 Lassen 2 miles north of Susanville on road to Alturas Comment
  SEINET2142793 Image available Crepis occidentalis subsp. occidentalis Noel H. Holmgren, Holmgren, Patricia K. 1978-6-11 8929 Lassen upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale 1700 Comment
  UC1137698  Crepis occidentalis subsp. pumila A. Simontacchi 1940-6-11 845 Lassen 3.1 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC67080  Cressa truxillensis Jeanne Boze 1981-6-11 106 Lassen Outer edge of Horse Lake, 11 1/2 mil. from 139 on Horse Lake Rd. 1539 Comment
  UC1483839  Crocidium multicaule G. Schoolcraft 1980-4-6 199 Lassen near base of Bass Hill (along Hwy 395, near city dump) 1280 Comment
  SJSU10956  Croton setiger V. Hardham 1965-7-12 122 Lassen 12.4 mi NE of Susanville on Hwy 139 1493 Comment
  RSA233758  Crypsis vaginiflora R. F. Thorne, C. W. Tilforth 1969-9-6 39255 Lassen along Long Valley Creek, c. 14 mi. SE of Milford. 1311 Comment
  CHSC13599  Cryptantha J. Pitts 1972-6-23 268 Lassen Ca. 40 yds e of Shepherd's Hall, Eagle Lake Field Station. Comment
  CHSC23567  Cryptantha affinis W. O. Baum 1971-7-6 28 Lassen E slope of Gallatin Peak. 1950 Comment
  CHSC29967  Cryptantha affinis R. A. Schlising 1979-6-7 3450 Lassen Sof Eagle Lake, in Lassen National Forest, 5 mi N of Hwy 36, on Hwy A1. Comment
  HSC81480  Cryptantha ambigua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6016 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  HSC82192  Cryptantha ambigua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6043 Lassen Along Ash Creek at Ash Creek Campground 1494 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
  CHSC106580  Cryptantha circumscissa C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  POM252792  Cryptantha hendersonii A. A. Heller 1938-6-23 15206 Lassen Lassen County the ridge E of Mapes on Hwy 395. 1372 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
  CHSC65300  Cryptantha torreyana Vernon H. Oswald; Lowell Ahart 1995-8-14 7198 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 4.7 mi W of Hwy. 395, N of Susanville. 1676 Comment
  SDSU20527  Cryptantha torreyana var. torreyana Nuri Benet-Pierce, John P. Pierce 2012-7-14 529 Lassen Diamond Mountain 2054 Comment
  CHSC27582  Cryptantha watsonii N. E. Heiken 1978-6-27 54 Lassen SE end of Eagle Lake, near Eagle Lake Field Station. 1554 Comment
  NY1112083  Cryptantha watsonii B. J. Ertter 1987-6-16 7187 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 Comment
  UCD54418  Cuscuta approximata Jerry Schmierer 1986-9-1 s.n. Lassen Don Blickenstaff Ranch. Comment
  JEPS47106  Cuscuta californica Brown and Wieslander 1922-8-20 85 Lassen Martin Springs Eagle Lake Comment
  UC22937  Cycladenia humilis var. humilis Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  RSA0049616  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the crest 1950 Comment
  CHSC99298  Damasonium californicum Lowell Ahart; John Dittes 2008-6-20 14941 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1100148  Damasonium californicum Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 755 Lassen on Great Northern R.R. <Nubeiber> (Hwy. 299) Comment
  CDA35647  Damasonium californicum J. R. Keck Jr. 1985-7-18 PDR# 330136 Lassen Ballard Reservoir; Near Old Station. Lassen National Forest. 0 Comment
  UC1609259  Danthonia californica Vernon H. Oswald and Lowell Ahart 1993-8-3 5755 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  UCD61015  Danthonia californica John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  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
  CHSC71862  Deinandra lobbii Vernon H. Oswald; Lowell Ahart 1998-9-8 9573 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  HSC41628  Deinandra lobbii Barbara Kelly 1977-8-10 581 Lassen Along Adin Susanville Road, mileage marker 23.0, S of Adin Comment
  CHSC106590  Delphinium andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC4983  Delphinium andersonii R. Clicquennoi 1967-6-24 38 Lassen Meadow. 4 mi e of Eagle Lake Biology Station at Murrer's Upper Meadow. 1524 Comment
  CHSC6242  Delphinium glaucum A. Santos 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CAS-BOT-BC116051  Delphinium nuttallianum Albert Michael Vollmer; L. Beane 1953-7-1 63 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC67294  Delphinium nuttallianum James D. Jokerst 1991-5-29 3306 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CHSC7732  Delphinium nuttallianum Beverley J. Wise 1969-5-9 85 Lassen 11.7 mi. west of Susanville on Forest Serv. 8246 off Hwy. 36. 1524 Comment
  CAS-BOT-BC116046  Delphinium nuttallianum F. W. Pierson 1926-6-22 6820 Lassen Trail to Devil's Kitchen, Drakesbad, Lassen National Park. Comment
  CAS-BOT-BC116053  Delphinium nuttallianum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen West slope, Fredonyer Pass, 13.5 miles west of Susanville 1554 Comment
  CAS-BOT-BC194262  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1959-9-23 34888 Lassen Juniper Lake north end, Lassen Park 2057 Comment
  UC188776  Deschampsia cespitosa subsp. cespitosa Milo S. Baker July 1894 Lassen Eagle Lake Comment
  CAS-BOT-BC192741  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49499 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC192743  Deschampsia danthonioides Lassen 1927 G. S. Crew 1927-7-15 52 Lassen Lassen National Forest 1737 Comment
  JEPS107688  Deschampsia danthonioides Lowell Ahart, John Dittes 2005-6-1 11913 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  SACT000919  Deschampsia danthonioides Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  UCD62999  Deschampsia danthonioides John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49499 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  RSA268159  Deschampsia danthonioides J. R. Reeder, C. G. Reeder 1972-6-1 5630 Lassen 2 miles S. of Nubieber. 1037 Comment
  POM313167  Deschampsia elongata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  CHSC99147  Descurainia nelsonii Lowell Ahart; John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC25101  Descurainia pinnata W. R. Lessig 1967-6-24 3 Lassen 1/4 mi. N. of Eagle Lake Biology Station. 1584 Comment
  UC1143030  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  JEPS25534  Dichelostemma multiflorum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7148 Lassen 3.7 mi s Susanville to Adin road junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  CAS-BOT-BC500987  Dichelostemma multiflorum Alice Eastwood; John Thomas Howell 1940-6-11 7971 Lassen Big Valley Mts. Comment
  SD132250  Dieteria canescens G. Helmkamp 1990-9-23 G 8 Lassen North of Ravendale. 1675 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
  UC1523806  Dieteria canescens var. canescens Gary Schoolcraft 1982-7-7 769 Lassen Ft. Sage Mtns. 1950 Comment
  CAS-BOT-BC290960  Dieteria canescens var. shastensis James Jokerst 1983-7-24 1879 Lassen Near Madeline Plains 1614 Comment
  CHSC64867  Dieteria canescens var. shastensis Vernon H. Oswald 1995-6-26 6937 Lassen Modoc Plateau. Gravel pit on the e side of Ash Valley Rd. (Lassen 527) 0.2 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  JEPS40723  Dieteria canescens var. shastensis Duncan Dunning 1921-8-15 Lassen near Facht (railroad station) (sw of Westwood Junction); Robbers Creek Comment
  UC1136761  Dieteria canescens var. shastensis Irwin H. Johnson 1933-7-14 F 268 Lassen Lassen Forest 1752 Comment
  CAS-BOT-BC153676  Diplacus mephiticus Alice Eastwood; John Thomas Howell 1940-6-15 8325 Lassen Grasshopper Valley Comment
  CHSC5907  Diplacus mephiticus R. Gein 1946-6-12 Lassen Pine Creek bridge. 1584 Comment
  CAS-BOT-BC151430  Diplacus nanus H. D. Ripley; R. C. Barneby 1944-5-30 5977 Lassen Mouth of Madeline - Sierra Nevada 1706 Comment
  CDA6686  Dipsacus fullonum T. C. Fuller, Lee Wheeler 1959-7-23 2820 Lassen Nubieber. 0 Comment
  CAS-BOT-BC136177  Dodecatheon alpinum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  UC559942  Dodecatheon conjugens Leo Whitney 1935-6-11 3225 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  SEINET8561548  Dodecatheon conjugens M. J. Williams 1969-5-24 s.n. Lassen Ca 0.5 mile N of Bogart Ranger Station. Comment
  CHSC60886  Downingia bacigalupii Vernon H. Owald; Lowell Ahart 1993-7-8 5677 Lassen N. side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  CHSC95386  Downingia bacigalupii H. Chappel; J. Goldhammer, K. Moran, K. Strassman 2002-7-9 ALT- 018 Lassen Ecoregion 4. Muck Valley (at top of mountain pass). 1386 Comment
  JEPS120905  Downingia bacigalupii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18738 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
  JEPS21587  Downingia bacigalupii Calvin McMillan 1949-6-15 1543 Lassen w of Bieber (nw Lassen County (corner)) Comment
  UC1520668  Downingia bacigalupii Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9462 Lassen 5.6 mi w U.S. Highway 395; Madeline Plains 1615 Comment
  CAS-BOT-BC492927  Downingia bacigalupii Louis K. Mann; M. Pat Mann 1963-6-18 s.n. Lassen On State Hwy 139 from Susanville to Adin, 42 mi N of Susanville. Comment
  POM260453  Downingia bicornuta C. L. Hitchcock 1940-5-26 6645 Lassen Overflow of Pitt River, 1 mile W of Bieber. Comment
  JEPS58978  Downingia bicornuta var. bicornuta Wm. Anderson 1960-6-16 Lassen 0.25 mi s Mapes Ranch; Honey Lake Valley Comment
  UC1143175  Downingia bicornuta var. bicornuta Robert W. Gardner 1937-6-26 G- 24 Lassen Poison Lake Halls Flat Quad. 1706 Comment
  SFV3644  Downingia elegans I. L. Wiggins, D. B. Wiggins 1961-6-16 16532 Lassen Dry, roadside swale in Big Valley, 2.5 miles east of Modoc-Lassen County liine. 1280 Comment
  SJSU3174  Downingia insignis J. W. Tilden 1958-6-27 1290 Lassen Madeline Comment
  UC614648  Downingia insignis L. Constance 1938-6-11 2328 Lassen Litchfield, overflow of the Susan River Susan River 1219 Comment
  UCD55103  Downingia insignis Gerald Dickinson 1963-7-3 72 Lassen U.S. Highway 299; 1 mile west of Bierber. 1249 Comment
  CHSC23440  Downingia laeta K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5805 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  CHSC99496  Downingia laeta Lowell Ahart; John Dittes 2008-6-20 14928 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1188737  Downingia laeta John H. Weiler, L. Constance, and E. Molseed 1960-6-13 60164 Lassen 1.7 mi s Ravendale (at w side of U.S. Hwy 395) 1615 Comment
  UCD55040  Downingia laeta Malcolm A. Nobs; S. Galen Smith 1949-7-20 1047 Lassen Bieber; along Highway 299. Comment
  SBBG33614  Downingia pulchella H. and M. Dearing 1938-6-30 2224 Lassen ca. 50 mi W of Susanville 1219 Comment
  CAS-BOT-BC41369  Draba verna John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49203 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  SEINET5342791  Draba verna J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA. 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
  HSC95149  Drosera anglica Gordon Leppig, J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC527339  Drymocallis glandulosa var. reflexa John Thomas Howell 1976-6-20 52013 Lassen ABout 5 miles west of Fredonyer Pass, near confluence of Willard Creek and Susan River, Sierra Nevada 1432 Comment
  RSA772653  Elatine R. F. Thorne, Larry E. DeBuhr 1975-8-22 47213 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC116200  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20298 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA252456  Elatine gracilis R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39135 Lassen Said Valley Reservoir. Comment
  CAS-BOT-BC113615  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  HSC7304  Eleocharis acicularis Fred J. Kindel 1955-6-15 Lassen Mt. Meadows Reservoir, Westwood Comment
  UC1567360  Eleocharis bella G. Schoolcraft 1989-7-18 1982 Lassen S of Clarks Valley Road near Bucks Spring 1874 Comment
  CHSC77256  Eleocharis macrostachya G. Schoolcraft 1995-6-27 2499 Lassen Cherry Creek. 1524 Comment
  JEPS120126  Eleocharis macrostachya Lowell Ahart, John Dittes 2012-7-9 18293 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC112848  Eleocharis macrostachya R. K. Gierisch 1968-7-12 3359 Lassen Hwy 36, 1 mi E of Fredonyer Pass. 1706 Comment
  UC1142965  Eleocharis quinqueflora A. L. Hormay 1941-6-25 19 Lassen Burgess Spring Lassen National Forest 1676 Comment
  UCD150399  Elodea canadensis William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  CHSC7692  Elymus Beverly J. Wise 1969-5-23 123 Lassen 35 miles SE of Susanville on Lassen County Road 320. 1249 Comment
  CAS-BOT-BC203831  Elymus X hansenii David D. Keck; J. Clausen 1935-6-24 3751 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  JEPS122360  Elymus elymoides Joseph Broberg, Jaycee Leonard 2012-7-31 CA 320 -117 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left into the Mendibourne wildlife game management area. Collection is across a fence in BLM land Comment
  UC1537224  Elymus elymoides subsp. elymoides Gordon H. True Jr. 1937-7-10 786 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1524 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
  UC1037105  Elymus glaucus Leo Whitney 1934-7-15 3003 Lassen ca 15 mi w Eagle Lake; Lassen National Forest, Crater Lake 2133 Comment
  CAS-BOT-BC206729  Elymus glaucus subsp. glaucus L. S. Smith 1918-8-11 1021 Lassen Lost Lake, Camp One, Modoc Forest 2438 Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  JEPS121791  Elymus spicatus B. Castro and L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. Comment
  JEPS127708  Elymus spicatus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -161 Lassen Juniper Ridge Road, before split with Juniper Tree Road. Population North of road. Comment
  SEINET5642835  Elymus spicatus Fred W. Hoffman 1946-6-8 1822 Lassen Lava beds east of Karlo, CA.; 0 Comment
  UC60832  Elymus trachycaulus M. S. Baker and Frank Nutting 1894-7-5 Lassen mts. s Dixey Valley Comment
  CHSC92829  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2005-6-1 11880 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  CAS-BOT-BC204358  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1973-7-10 49776 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC204360  Elymus trachycaulus subsp. trachycaulus J. Burtt Davy 1897-6-17 s.n. Lassen Honey Lake Valley Comment
  GMDRC7737  Elymus triticoides J. M. Andre, G. Clifton 1993-6-1 33414 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
  SEINET7727869  Ephedra nevadensis Unknown Lassen Susanville Comment
  CAS-BOT-BC81879  Ephedra viridis Doris Kildale Gillespie 1930-5-12 9347 Lassen between Susanville and Leavitt Lake Comment
  CHSC111257  Ephedra viridis L. P. Janeway; B. Castro 2012-7-3 10940 A Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  CHSC111258  Ephedra viridis L. P. Janeway; B. Castro 2012-7-3 10940 B Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  POM145990  Epilobium angustifolium subsp. circumvagum J. B. Feudge 1927-7-20 1716 Lassen West of Susanville Comment
  CHSC113061  Epilobium brachycarpum Lowell Ahart; John Dittes 2013-7-22 18844 Lassen West margin of a duck field, about 20 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121278  Epilobium brachycarpum Lowell Ahart 2013-7-22 18844 Lassen W margin of duck field, about 20 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC106066  Epilobium campestre Lowell Ahart; John Dittes 2010-7-31 16996 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC110908  Epilobium campestre Lowell Ahart; John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  JEPS119650  Epilobium campestre Lowell Ahart, John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC111098  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes 2012-7-9 18301 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 mile (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC27073  Epilobium ciliatum subsp. ciliatum Robert A. Schlising 1978-8-3 3334 Lassen SE of Eagle Lake at Murrers Upper Meadow. North end of meadow. Comment
  HSC95335  Epilobium ciliatum subsp. ciliatum Gordon Leppig 1998-8-17 1054 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1191740  Epilobium ciliatum subsp. ciliatum Malcolm A. Nobs and S. Galen Smith 1949-8-20 1471 Lassen 1 mi s Milford (seepage area); Honey Lake Valley Comment
  CHSC113082  Epilobium densiflorum Lowell Ahart; John Dittes 2013-7-22 18878 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1567379  Epilobium densiflorum G. Schoolcraft 1989-7-18 1984 Lassen s Clark's Valley Rd. (near Box Spring) 1813 Comment
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  CHSC66251  Epilobium hallianum Vernon H. Oswald; Lowell Ahart 1996-6-24 7849 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
  UC1924229  Epilobium hallianum Debra Valov 2005-8-19 2005218 Lassen Eagle Lake; Hwy 139, Mi. marker 25 1554 Comment
  HSC95313  Epilobium oregonense Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 688 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM46398  Epilobium oregonense Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CHSC117515  Epilobium pallidum Lowell Ahart; John Dittes 2016-7-13 21127 Lassen West of the pond and along the poor dirt road, 60 yards 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
  UC1609446  Epilobium pallidum Vernon H. Oswald and Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd (33N18) 1.4 mi ssw Pittville Rd (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, bed of vernal pool on e side of rd) 1694 Comment
  CAS-BOT-BC56948  Equisetum arvense John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49463 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC57302  Equisetum laevigatum John Thomas Howell 1975-7-23 51386 Lassen Susanville 1295 Comment
  CDA18386  Eragrostis cilianensis G. D. Barbe 1978-8-31 2425 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  CAS-BOT-BC284042  Eragrostis minor John Thomas Howell 1976-7-19 51942 Lassen Susanville, Sierra Nevada 1287 Comment
  CDA34254  Eragrostis pectinacea var. pectinacea L. Ahart, J. Dittes 2010-8-31 17092 Lassen On the west side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, and about 7.0 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET8821547  Eremogone congesta var. subcongesta G. Schoolcraft 1998-6-30 2746 Lassen N end of Fort Sage Mountains. 1859 Comment
  CAS-BOT-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC160000  Eremothera boothii subsp. alyssoides Elmer I. Applegate 1934-5-4 8918 Lassen Secret Valley Comment
  CHSC27718  Eremothera boothii subsp. alyssoides Robert A. Schlising 1978-7-2 3308 Lassen SE of Horse Lake, 15.5 mi SW of jct Hwy 395 and Horse L. Road, along the latter. 1545 Comment
  SEINET4133353  Eremothera boothii subsp. alyssoides G. Schoolcraft 1980-5-30 247 Lassen Along road to Diaz Ranch 1359 Comment
  CHSC5079  Eriastrum signatum A. W. Harvilik 1967-6-30 35 Lassen Collected near junction of rd. 5.19 and rd to Murrer's Meadow. 1524 Comment
  JEPS14047  Eriastrum signatum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5417 Lassen along Smoke Creek rd 6.8 mi e Highway 395 (s edge of valley); Secret Valley Comment
  JEPS19760  Eriastrum signatum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6008 Lassen along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  RSA0124144  Eriastrum signatum R. F. Thorne, C. W. Tilforth 1969-9-6 39264 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  RSA0125157  Eriastrum signatum Reino Alava 1957-7-5 1138 Lassen Along Highway no. 395, 4.25 miles S of Ravendale. Comment
  RSA0125158  Eriastrum signatum Marcus E. Jones 1897-6-22 9972 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  SEINET7356288  Eriastrum sparsiflorum Richard R. Halse 2004-7-21 6669 Lassen At junction of U.S. Hwy 395 and State Road A 26, ca 11 miles southeast of Milford.; 0 1274 Comment
  JEPS116749  Eriastrum sparsiflorum David Gowen 2006-8-2 657 Lassen South of Constantia on Red Rock Rd. just east of Hwy 395. Comment
  JEPS124584 Image available Eriastrum sparsiflorum M. R. Kempf 1965-7-12 290 Lassen 1 mile N. of Milburn, growing west side of road HWY 398. Comment
  UC133906  Eriastrum sparsiflorum Dr. Gustav Eisen July 1891 Lassen Honey Lake Comment
  SEINET5741365 Image available Ericameria bloomeri Lowell E. Urbatsch, Vensa Karaman 2000-1 7714 Lassen Collected along Forest Road 37N11, off of CA 139. 1220 Comment
  CAS-BOT-BC298172  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel on the road to Janesville 1219 Comment
  JEPS21524  Ericameria nauseosa var. oreophila W. L. Jepson 1918-8-4 7808 Lassen Horse Lake 1554 Comment
  UC1553387  Ericameria nauseosa var. oreophila G. Schoolcraft 1988-8-24 1853 Lassen 16 mi e of Adin (Ash Valley RNA/ACEC); Ash Valley 1554 Comment
  CAS-BOT-BC294186  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50216 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  UC1483819  Ericameria nauseosa var. speciosa G. Schoolcraft 1980-10-8 359 Lassen w side of Painters Flat 1716 Comment
  UC217104  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11679 Lassen near Lassen; Honey Lake Valley 1219 Comment
  UC773958  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spring Experiment Range Lassen Forest 1755 Comment
  UC1483854  Ericameria parryi var. nevadensis G. Schoolcraft 1980-10-8 358 Lassen near intersection of Post Camp road Big Springs road 1694 Comment
  CAS-BOT-BC293204  Ericameria suffruticosa Clare B. Hardham 1971-8-22 18393 Lassen Diamond Mountain 2133 Comment
  SEINET201631  Erigeron aphanactis A. Cronquist, AH Holmgren 1959-6-17 8466 Lassen 50 mi SE of Susanville 1372 Comment
  SEINET8079426 Image available Erigeron aphanactis var. aphanactis M. J. Williams 1974-7-29 74- 1 -49 Lassen 2 mi. west of Hallelujah Junction, south of Hwy 70 1494 Comment
  RSA0049609  Erigeron aphanactis var. congestus Dean Wm. Taylor 2012-6-7 21229 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  CHSC29923  Erigeron bloomeri Robin Ondricek 1978-6-6 35 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1584 Comment
  RSA700050  Erigeron bloomeri L. P. Janeway 2001-6-20 7198 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  RSA713118  Erigeron bloomeri L. P. Janeway, B. Castro 2005-7-10 8486 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
  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
  UCD131273  Erigeron bloomeri Beecher Crampton 1960-6-18 5723 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  CAS-BOT-BC294485  Erigeron bloomeri var. bloomeri John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50676 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CHSC4947  Erigeron bloomeri var. bloomeri R. Carter 1967-6-23 545 Lassen Growing 10 yds off s side rd. Comment
  POM33272  Erigeron bloomeri var. bloomeri Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1536892  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-25 531 Lassen Harvey Ranger Station Harvey Valley 1706 Comment
  CAS-BOT-BC295980  Erigeron divergens Clare B. Hardham 1961-6-17 7504 Lassen Baxter Creek south of Susanville 1524 Comment
  CAS-BOT-BC296848  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-11 7979 Lassen Big Valley Mts. Comment
  CHSC117510  Erigeron divergens Lowell Ahart; John Dittes 2016-7-13 21106 Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 mile south of County Road A-2, 5.3 miles(air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  CHSC66373  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1996-6-17 7808 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the Susan River E of Devils Corral Trailhead and W of the 6.0 mile post. 1402 Comment
  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
  JEPS84932  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca .75 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  SEINET5708466 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  UC1924228  Erigeron divergens Debra Valov 2004-6-8 2004246 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC87555  Erigeron divergens T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  UC1776657  Erigeron eatonii var. nevadincola G. Schoolcraft 1998-6-30 2743 Lassen N slope of Ft. Sage Mountains 1950 Comment
  UCD131887  Erigeron eatonii var. nevadincola Grady L. Webster 1989-5-13 7719 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  HSC81782  Erigeron eatonii var. plantagineus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6017 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 Comment
  JEPS1207  Erigeron eatonii var. plantagineus Milo S. Baker 1952-5-23 12433 Lassen Hwy 36 1/2 mi w Fredonyer Pass 1752 Comment
  RSA702593  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  UC1776680  Erigeron eatonii var. plantagineus G. Schoolcraft 1993-6-29 2313 Lassen Ash Valley RNA 16 miles E of Adin 1554 Comment
  CHSC105240  Erigeron filifolius var. filifolius Lowell Ahart; John Dittes 2010-7-31 17008 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC5208  Erigeron filifolius var. filifolius 1946-6-14 Lassen Eagle Lake. 1584 Comment
  UC584244  Erigeron lassenianus var. lassenianus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2264 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties) Comment
  CHSC112190  Erigeron linearis Dean Wm. Taylor 2012-6-7 21231 Lassen Modoc Plateau. Grasshopper Valley; Grasshopper Valley Road 2.3 miles E of junction with Highway 139. 1635 Comment
  UC585085  Erigeron linearis E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1792 Lassen about 5 mi N of Terno 1371 Comment
  CHSC77195  Erigeron nevadincola G. Schoolcraft 1998-6-30 Lassen N. slope of Ft. Sage Mtns. 1950 Comment
  CAS-BOT-BC295959  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  HSC82189  Erigeron philadelphicus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6038 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CDA19737  Erigeron pumilus D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  POM261457  Erigeron pumilus subsp. intermedius Alice Eastwood, John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC68845  Erigeron pumilus var. intermedius Vernon Oswald; Lowell Ahart 1997-6-24 8648 Lassen South of Susanville at the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC93688  Erigeron pumilus var. intermedius Lowell Ahart; John Dittes 2005-6-1 11853 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  JEPS22799  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley Lassen Forest, Grass Valley 1700 Comment
  JEPS94532  Erigeron pumilus var. intermedius Vernon Oswald and Lowell Ahart 1997-6-24 8648 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  SBBG128042  Erigeron pumilus var. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen ca. 3330 feet N of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 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
  CAS-BOT-BC241568  Eriogonum baileyi var. baileyi Margaret Williams; Steven Williams 1974-7-26 74 -L-25 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS57084  Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-2 7772 Lassen Beckwith Pass 1463 Comment
  SJSU13947  Eriogonum baileyi var. baileyi N. A. Hopkins 1986-8-28 1380 Lassen County Rd 33 (Scott Rd), lower Long Valley N of Hwy &0 & E of Beckwourth Pass Comment
  SEINET8513012  Eriogonum caespitosum A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 s.n. Lassen Constantia Allotment, West of Peterson's 1490 Comment
  CAS-BOT-BC241834  Eriogonum caespitosum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 2 1/2 miles north of Secret Valley, C.C.C. Camp, U.S. Hy. 395 Comment
  SEINET11934606  Eriogonum caespitosum Unknown 1977-1 150 Lassen 1.6 km SE of South Fork Reservoir and 1.6 km N of Skedaddle Creek Rd. ca 8 km NE of Herlong 1660 Comment
  CDA22482  Eriogonum collinum E. E. Fix 1960-6-2 Lassen 0 Comment
  JEPS19795  Eriogonum collinum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6009 Lassen ne along US Highway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  RSA238630  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along Hwy 395, 4.5 miles south of Ravendale Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  CHSC68899  Eriogonum douglasii var. meridionale Vernon Oswald; Lowell Ahart 1997-6-24 8639 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  RSA0027359  Eriogonum elatum John F. Emmel 1994-7-18 1334 Lassen North end of Fort Sage Mtns; 1.0 air mi north and 0.7-0.9 air mi east of Indian Spring. 1707 Comment
  POM105623  Eriogonum elatum var. elatum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC263045  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  UC585235  Eriogonum microthecum var. laxiflorum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1753 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UC85948  Eriogonum microthecum var. laxiflorum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UCD149826  Eriogonum nidularium William Anderson 1963-6-22 s.n. Lassen Lassen County. Wendel Canyon. Comment
  CHSC68900  Eriogonum nudum var. nudum Vernon Oswald; Lowell Ahart 1997-6-24 8595 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). Along the edge of the road. 1685 Comment
  SBBG94822  Eriogonum nudum var. nudum G. K. Helmkamp 1990-9-23 G- 11 Lassen N of Ravendale 1676 Comment
  SD13333  Eriogonum nudum var. nudum R. V. Chamberlain 1935-9-8 6584 Lassen Guernsey Creek Comment
  CAS-BOT-BC269924  Eriogonum nudum var. pubiflorum A. M. Vollmer; L. Beane 1953-7-1 30 Lassen Along Halls Flat road, beginning 6 mi. West of Susanville, to McArthur 1554 Comment
  CHSC13456  Eriogonum nudum var. pubiflorum J. Pitts 1972-6-25 272 Lassen 30 yds. e of Papoose Creek on Road 4.25, on n side of road. S of Eagle Lake 1/4 mi. Comment
  SEINET11261507  Eriogonum nudum var. pubiflorum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3925 Lassen 5.5 rd miles west of jct with Hwy 395 on Dawn Dr then rd to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1899 Comment
  UC1137675  Eriogonum nudum var. pubiflorum George A. Fischer, Irwin H. Johnson 1933-7-14 F 258 Lassen Lassen National Forest 1783 Comment
  UC1542948  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1760 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  UC1542949  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1759 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  CHSC12966  Eriogonum ovalifolium var. nivale K. R. Stern 1974-6-26 5864 Lassen Ca. 3 mi nw of intersection of Pittville Rd. with Hwy. 44, ca. 200 yds. ne of Poison Lake. 1700 Comment
  SEINET516318  Eriogonum ovalifolium var. purpureum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the W side of Hwy. 44 ca. 1 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  UC1483820  Eriogonum prociduum G. Schoolcraft 1980-7-14 308 Lassen w Madeline (Ash Valley); Ash Valley 1548 Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake 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
  UC412800  Eriogonum spergulinum var. reddingianum Franklin P. Nutting Lassen Pine Creek Comment
  CAS-BOT-BC272628  Eriogonum spergulinum var. reddingianum H. D. Ripley; R. C. Barneby 1943-6-13 5705 Lassen South of Milford 1859 Comment
  UC303059  Eriogonum spergulinum var. reddingianum Pearl Safford Lassen Susanville [uncertain locality] Comment
  NY283103  Eriogonum sphaerocephalum G. Schoolcraft 1982-6-28 737 Lassen Fort Sage Mountains 1706.9 Comment
  RSA716265  Eriogonum sphaerocephalum L. Ahart, John Dittes 2005-6-2 11984 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Road and Highway 70; 5.8 mi. (air) northwest of Hallelujah Junction. 1431 Comment
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Jun 1 2009
  CHSC57304  Eriogonum sphaerocephalum var. halimioides Mary Meyer 1980-7-9 Lassen One mile northwest of Horse Camp Spring. Meadow. 1706 Comment
  CHSC64846  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1995-6-26 6927 Lassen Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  HSC63565  Eriogonum sphaerocephalum var. halimioides Thomas W. Nelson, Jane P. Nelson 1980-7-6 5998 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA700051  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7190 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 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
  SEINET11261405  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 miles south of Adin.; 0 Comment
  CHSC25087  Eriogonum sphaerocephalum var. sphaerocephalum K. R. Stern 1967-7-1 2456 Lassen Ca. 16 mi. NE of Susanville. State Hwy 139. Comment
  NY283128  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Jonesville on Highway 395. Comment
  SEINET11261384  Eriogonum sphaerocephalum var. sphaerocephalum Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km (11.5 mi) airline distance east-southeast of Ravendale.; 0 1830 Comment
  UC849734  Eriogonum sphaerocephalum var. sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen s Secret Valley (on U. S. Highway #395) 1371 Comment
  JEPS107833  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2005-6-2 11984 Lassen North side of the poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.8 miles (air) northwest of Hallelujah Junction 1430 Comment
  JEPS114744  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2008-6-19 14893 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
  JEPS117571  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2010-7-31 16989 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
  UC1924215  Eriogonum strictum var. anserinum Debra Valov 2004-6-9 2004268 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1270 Comment
  HSC63564  Eriogonum strictum var. anserinum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6033 Lassen Ash Valley along rd. branching off Adin-Madeline Rd. 2.5 mi. from jct. 1555 Comment
  UC1249283  Eriogonum strictum var. anserinum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8473 Lassen 50 mi se Susanville 1371 Comment
  CAS-BOT-BC262770  Eriogonum strictum var. proliferum Doris Kildale Gillespie 1930-5-13 9365 Lassen Between Susanville and Janesville 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-BC267815  Eriogonum umbellatum var. covillei G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mtn. 2316 Comment
  UC161881  Eriogonum umbellatum var. modocense T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CDA22684  Eriogonum umbellatum var. nevadense S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC14170  Eriogonum umbellatum var. nevadense K. R. Stern 1974-6-26 5867 Lassen E end of Champs Flat. Comment
  JEPS97420  Eriogonum umbellatum var. nevadense Vernon H. Oswald and L. Ahart 1995-6-19 6888 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Loosely cespitose perennial 1350 Comment
  NY399395  Eriogonum umbellatum var. nevadense G. Schoolcraft 1982-7-7 771 Lassen Fort Sage Mountains 1950.7 Comment
  UC1143015  Eriogonum umbellatum var. nevadense August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  SEINET10479566  Eriogonum umbellatum var. nevadense Taylor 1982-8-27 Taylor 5056 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  RSA221784  Eriogonum umbellatum var. polyanthum Noel Holmgren, J. J. Fay, B. L. Bethers 1970-6-25 4375 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  UC6403  Eriogonum ursinum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CHSC117539  Eriogonum vimineum Lowell Ahart; John Dittes 2016-7-13 21132 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC30591  Eriogonum vimineum Leonard Walk 1972-6-22 2 Lassen 50 yrds. N. of Eagle Lake Biology Station kitchen. 1554 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
  CHSC64888  Eriogonum vimineum Vernon H. Oswald; Lowell Ahart 1995-6-19 6882 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. On the edges and bottom of an eroded dry wash on the n side of the road. 1371 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
  JEPS97409  Eriogonum vimineum Vernon H. Oswald and L. Ahart 1995-6-19 6882 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395 1371 Comment
  RSA165633  Eriogonum vimineum Clare B. Hardham 1961-6-16 7490 Lassen Open woods. Gold Run Creek. South of Susanville. Comment
  SEINET10299456  Eriogonum vimineum Gary Schoolcraft 1982-8-18 889 Lassen Along Doyle Grade Road west of Doyle Creek 1585 Comment
  UC6518  Eriogonum vimineum M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC85765  Eriogonum vimineum T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC262356  Eriogonum vimineum Margaret Williams; Louella Bass 1972-10-22 EV 1 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC262361  Eriogonum vimineum Peter H. Raven; Otto T. Solbrig 1958-6-17 13272 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  HSC69595  Eriogonum vimineum J. Walker 1979-7-18 37 Lassen Near Skedaddle Creek, S portion 1311 Comment
  SEINET3160096  Eriogonum vimineum subsp. vimineum L. S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  HSC97608  Eriophorum gracile Vernon H. Oswald, L. Ahart 1996-6-24 7888 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1) and 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 Comment
  CHSC12492  Eriophyllum lanatum Carol Weld 1969-6-20 9 Lassen Dean's Meadow. 1950 Comment
  HSC28818  Eriophyllum lanatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19256 Lassen Harvey Valley near Cone Springs Comment
  CHSC59502  Eriophyllum lanatum var. integrifolium Mary Meyer 1980-1-1 Lassen Several yards west of gravel pits. 1615 Comment
  RSA221801  Eriophyllum lanatum var. integrifolium Noel Holmgren, John J. Fay, Barton L. Bethers 1970-6-25 4376 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  JEPS124540 Image available Erodium cicutarium Laurel Loeblich 1964-6-30 58 Lassen 19 mi. north of Halleluja Junction (highways 40 and 395) on 395; 1 1/2 mi. south of Doyle. Comment
  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
  UC1487306  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 550 Lassen U.C. Botanical Garden; ; alongside State Highway 395, 4.1 miles NNW of Termo, Madeline Plains Comment
  UCD18971  Eryngium alismifolium Raymond D. Ratliff 1965-8-4 39 Lassen Lassen National Forest, Harvey Valley Allotment (HV 78-73). 1706 Comment
  CAS-BOT-BC54588  Erysimum capitatum Al Simontacchi 1940-6-15 868 Lassen Lassen Forest. 0.6 miles west southwest of Black Mountains. 2133 Comment
  UC1584017  Erysimum capitatum G. Schoolcraft 1990-5-15 2047 Lassen about 4 mi s Nubeiber; John's Valley area 1310 Comment
  JEPS94111  Erysimum capitatum var. capitatum Vernon H. Oswald and Lowell Ahart 1998-5-22 9117 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 1.1 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1447 Comment
  JEPS79211  Erysimum repandum L. R. Heckard with R. C. Bacigalupi 1980-6-11 5247 Lassen 11.3 mi. n. Litchfield (along U.S. 395 s. of Deep Creek crossing, between R.R. & hwy.) 1463 Comment
  CAS-BOT-BC55198  Erysimum repandum John Thomas Howell 1977-6-23 52397 Lassen Northeast of Susanville on road to Eagle Lake. Comment
  SBBG15427  Erythranthe breweri H. and M. Dearing 1939-7-1 2244 Lassen 17 mi W of Susanville Comment
  CHSC5904  Erythranthe guttata M. West 1946-6-15 Lassen So. end Eagle Lake. 1584 Comment
  CHSC64897  Erythranthe latidens Vernon H. Oswald; Lowell Ahart 1995-6-19 6887 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Modoc Plateau. 1350 Comment
  CAS-BOT-BC153609  Erythranthe moniliformis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49410 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC30559  Erythranthe primuloides Sori H. Shad 1970-6-25 11 Lassen At Deans Meadow. 1828 Comment
  CHSC66268  Erythranthe pulsiferae Vernon H. Oswald; Lowell Ahart 1996-6-24 7865 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 open woods on the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  CHSC60777  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1993-6-3 5486 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1731 Comment
  UCD139645  Erythronium multiscapideum W. W. Robbins 1926-4-17 541 Lassen Grass Valley. Comment
  PASA565  Erythronium purpurascens Margaret Stason 1932-6-21 440 Lassen Devil's Kitchen, Lassen National Park Comment
  CAS-BOT-BC110550  Eschscholzia John Thomas Howell 1955-7-19 30814 Lassen Sierra Nevada. East side of Beckwourth Pass. 1493 Comment
  RSA149124  Eschscholzia californica var. crocea I. L. Wiggins, Dorothy B. Wiggins 1961-6-16 16531 Lassen Along Highway 299, overlooking Big Valley 1250 Comment
  UCR55538  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road (c. 2 mi south of U.S. Hwy 299 and 4 mi SW of Adin) 1280 Comment
  CDA3706  Euclidium syriacum E. E. Fix 1951-6-8 Lassen 0 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
  SEINET8506929  Euphorbia crenulata D. W. Taylor 2008-5-14 20198 Lassen Unnamed flat about 2 air miles SSE of Poison Butte 1768 Comment
  UCSC000449  Euphorbia dictyosperma M. S. Baker 02 Julyunknown year s.n. Lassen South side of Dixey Mts. Lassen Mts. Comment
  NY1001166  Euphorbia spathulata A. Tiehm 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1387 Comment
  RSA324236  Euphorbia spathulata A. Tiehm, James Young, Raymond Evans 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  UCR259111  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak 2409 Comment
  CAS-BOT-BC278432  Festuca idahoensis Clarence R. Quick 1961-6-21 61 -28 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 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
  JEPS127718  Festuca idahoensis Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -173 Lassen South on 395. West on 171. Continue above 6000ft. Comment
  UC1024694  Festuca idahoensis Leo Whitney 1933-7-10 2151 Lassen ca 25 mi w Eagle Lake (upper end); Lassen National Forest, Halls Flat 1737 Comment
  UC1026711  Festuca idahoensis Leo Whitney 1935-6-23 3295 Lassen Camp 10, Fruit Grower's Supply Company Comment
  UCD65976  Festuca idahoensis L. Whitney 1933-7-1 Lassen Logan Mt. Comment
  UCD65979  Festuca idahoensis L. Whitney 1933-8-10 Lassen Halls Flat. 1737 Comment
  UCR244064  Festuca microstachys Jim Andre, G. L. Clifton 1993-6-9 19690 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
  UC1024937  Festuca occidentalis Leo Whitney 1935-6-27 3337 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD66352  Festuca rubra L. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Comment
  UCD66360  Festuca rubra R. Tofsrud 1947-7-1 220 Lassen Cedar Cr. East of Madeline. Comment
  POM128264  Frasera albicaulis var. modocensis Franklin P. Nutting s.n. Lassen South side of Dixiy [or Dixey] Mountains. Comment
  RSA392153  Frasera albicaulis var. nitida Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  POM76343  Fraxinus dipetala C. C. Bruce 1897-7-3 s.n. Lassen Janesville(?), below Prattville 1372 Comment
  POM109748  Fritillaria atropurpurea Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  HSC79827  Fritillaria recurva William E. Rodstrom 1975-5-23 Lassen Near Day in most NW township of Lassen, 0.5 mi. E of Cinder Pit Mine, N of Hwy. 299 1280 Comment
  JEPS107800  Galium boreale subsp. septentrionale Lowell Ahart, John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  CHSC46121  Gayophytum diffusum subsp. parviflorum Lowell Ahart; John Thomas Howell 1974-7-9 523 Lassen Along Eagle Lake Road, near the south edge of Eagle Lake. 1584 Comment
  RSA0004469  Gayophytum helleri var. erosulatum W. L. Jepson 1918-8-2 7754 Lassen Beckwith Pass 1463 Comment
  RSA517182  Gayophytum humile J. T. Howell, Gordon H. True 1973-8-1 50207 Lassen Sierra Nevada: Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2165 Comment
  POM38703  Gayophytum racemosum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  SEINET10491752  Gayophytum ramosissimum Paul Gallian, David B. Dunn 1971-6-2 Gallian 468 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridenta, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET3287483 Image available Gayophytum ramosissimum Marcus E. Jones 1897-6-18 Lassen Chats. 1524 Comment
  CHSC66725  Gentiana calycosa Vernon H. Oswald; Lowell Ahart 1996-8-1 8119 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood 1737 Comment
  HSC93314  Gentiana calycosa Vernon H. Oswald, L. Ahart 1996-8-1 8119 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  JEPS28803  Gentianella amarella subsp. acuta George W. Gillett 1957-9-4 1130 Lassen 0.25 mi below Widow Lake (near Butte Lake, on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  CAS-BOT-BC459350  Geum aleppicum Marcus E. A M Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  RSA122288  Geum canescens L. R. Short, J. Warren 1936-6-23 s.n. Lassen Burgess Spring Exp Range. 1765 Comment
  CAS-BOT-BC143568  Geum triflorum John Thomas Howell 1934-7-6 12441 Lassen Harvey Valley Comment
  CHSC68869  Geum triflorum Vernon Oswald; Lowell Ahart 1997-6-24 8649 Lassen South of Susanville at the pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  RSA702135  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1136907  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  UCD39130  Geum triflorum Beecher Crampton 1964-6-25 7067 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  RSA122289  Geum triflorum var. ciliatum K. e. Bradshaw 1939-5-27 25210 Lassen Near S end of Black Mtn EF Plot 39-4. 1738 Comment
  UCR73831  Gilia brecciarum G. L. Webster 1989-5-13 7706 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  SEINET14625061  Gilia brecciarum subsp. brecciarum M. J. Williams, A. Tiehm 1978-5-14 78- 48 -1 Lassen Hwy 395, 2.8 miles S of Red Rock road turn-off. 1372 Comment
  CHSC106568  Gilia inconspicua K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 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
  SEINET14643952  Gilia inconspicua P. B. Kennedy 1901-6-10 s.n. Lassen Constantia, railroad station. Comment
  NY964494  Gilia inconspicua var. sinuata W. W. Eggleston 1911-5-20 6743 Lassen Vicinity of Doyle Station 1290 Comment
  CHSC93697  Gilia ochroleuca Lowell Ahart; John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  NY964018  Gilia salticola A. Tiehm 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert 1448 Comment
  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
  HSC95337  Glyceria borealis Gordon Leppig, J. Cromwell 1997-7-27 624 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC280597  Glyceria elata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49473 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC64755  Glyptopleura marginata Vernon H. Oswald 1995-5-24 6782 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the east side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  UC1567378  Gratiola ebracteata G. Schoolcraft 1989-7-24 1992 Lassen Said Valley Reservoir; along reservoir 1630 Comment
  JEPS4213  Gratiola neglecta Milo S. Baker 1899-8-24 Lassen Big Valley; Carmichael's Mill Comment
  UC444903  Gratiola neglecta Milo S. Baker 1899-8-24 Lassen Carmichael's Mill Big Valley (Big Valley) Comment
  CDA23424  Grayia spinosa S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  UC1567419  Grayia spinosa G. Schoolcraft 1989-5-31 1882 Lassen e. end of Skedaddle's (near rd. to n.) 1280 Comment
  SJSU3576  Grindelia nana C. L. Kline 1965-7-13 195 Lassen State Rte 299, 1 mi NE of Nubieber 1274 Comment
  CHSC60757  Gymnosteris parvula Vernon H. Oswald; Lowell Ahart 1993-6-3 5485 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. In a meadow. 1731 Comment
  UC1583961  Gymnosteris parvula G. Schoolcraft 1990-4-16 2011 Lassen about 15 mi ne of Ravendale 1798 Comment
  SEINET4173700  Habenaria leucostachys Marcus E. Jones 1897-1 Lassen Comment
  OBI76932  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen Natl forest. Windy Hollow. Pine Crk Valley quad. T31N R8E sec 15 SE of SW 1720 Comment
  SEINET3928294  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0 1720 Comment
  UC1137586  Hackelia californica A. Simontacchi 1940-6-15 869 Lassen 0.8 mi sw of Blacks Mountain; Lassen National Forest 2103 Comment
  CDA3149  Halogeton glomeratus E. E. Fix Jun 1949 Lassen Western Pacific Railroad right-of-way on Nevada-California line. Near Herlong. 0 Comment
  UC1602195  Halogeton glomeratus Pryer and Fix 1948-8-17 Lassen Herlong Comment
  RSA97952  Halogeton glomeratus J. L. Myler, Les Berry 1954-8-17 s.n. Lassen Karlo. Comment
  CHSC12485  Hastingsia alba Carol Weld 1969-6-26 44 Lassen 7.8 miles S. W. of Eagle Lake Field Station. 1584 Comment
  CAS-BOT-BC314767  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  JEPS34877  Helianthus cusickii Joseph Grinnell 1929-6-8 Lassen s side Pete's Valley ((Valley which extends from Horse Lake to plains w of Shaffer Mt.)) Comment
  UC32309  Helianthus cusickii M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC305660  Helianthus cusickii Philip A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale 1310 Comment
  SJSU8355  Helianthus petiolaris subsp. petiolaris W. Savage 1971-7-20 722 Lassen c. 2 mi N of Milford near W side of Honey L 1264 Comment
  CHSC76090  Heliotropium curassavicum Lowell Ahart; Vernon H. Oswald 1999-9-13 8219 Lassen In a field, 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
  UC1191654  Heliotropium curassavicum Verne Grant and Irving Schneider 1947-9-5 8373 Lassen n.w. shore Eagle Lake (by Sam Webb's place (Spaulding)) Comment
  CDA7799  Hemizonia pungens subsp. pungens D. French 1970-10-8 Lassen Blickenstaff Road #311. 0 Comment
  UC1776662  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  CHSC7686  Hesperochiron californicus Beverley J. Wise 1969-4-20 45 Lassen 14.6 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1463 Comment
  RSA122623  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley. Lassen Forest. 1707 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
  NY1002357  Hesperolinon micranthum G. Schoolcraft 1984-7-30 1324 Lassen About 1 mile east of Post Camp 1707 Comment
  POM87380  Hesperolinon micranthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC17262  Hesperolinon micranthum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. 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
  UC641664  Hesperostipa comata G. L. Stebbins Jr. 1939-7-9 2939 Lassen 4 mi s Doyle (near hwy) 1310 Comment
  CHSC66241  Heterocodon rariflorum Vernon H. Oswald; Lowell Ahart 1996-6-24 7859 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow ca. 0.4 mi S of the cabins. 1633 Comment
  UC1776666  Heterocodon rariflorum G. Schoolcraft 1996-7-17 2538 Lassen Moll Reservoir W of Ash Valley 1615 Comment
  NY783473  Heuchera rubescens B. J. Ertter 1987-6-16 7201 Lassen Skeedaddle Mountains on northeast side of Honey Lake; between Hot Springs Peak and VABM 2255.5 Comment
  CAS-BOT-BC425259  Heuchera rubescens P. Monnet 1913-7-4 830 Lassen S.E. de Lassen County Hot Springs Peak 1828 Comment
  CAS-BOT-BC312311  Hieracium Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC312419  Hieracium albiflorum John Thomas Howell; Gordon H. True 1973-7-31 50025 Lassen Road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  HSC68934  Hieracium albiflorum Gary Schoolcraft 1980-7-29 345 Lassen On Big Valley Mtn. Timber sale area W of Bieber 1768 Comment
  CAS-BOT-BC318711  Hieracium horridum Lemmon 1874-9-1 s.n. Lassen Shasta 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
  JEPS105682  Hieracium scouleri L. P. Janeway 2001-6-20 7196 Lassen along 22 Road about 1.8 km W of Black Hole, about 11.9 km N-NE of Harvey Mountain 460 Comment
  CHSC66720  Hieracium scouleri var. nudicaule Vernon H. Oswald; Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road. 2011 Comment
  CHSC66245  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1996-6-24 7885 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Localized colony in shallow water in marshy meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  UC420603  Hippuris vulgaris Franklin P. Nutting 1900-8-30 Lassen Big Valley near Lookout; Big Valley Comment
  JEPS120865  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18728 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
  CAS-BOT-BC284715  Hordeum jubatum John Thomas Howell 1976-7-20 52034 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UC53726  Hordeum jubatum J. Burtt Davy 1897-6-17 Lassen Reus Comment
  UCD85868  Hordeum marinum subsp. gussoneanum John Thomas Howell 1974-7-10 50533 a Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC99287  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
  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
  UC545661  Horkelia fusca subsp. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  CAS-BOT-BC536220  Horkelia fusca var. parviflora Louella Bass 1973-6-15 EV- 112 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CAS-BOT-BC514265  Horkelia fusca var. pseudocapitata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC537887  Horkelia tridentata var. flavescens G. S. Crew 1927-6-25 24 Lassen Lassen Forest, Norval Flat 1747 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
  CHSC65301  Hornungia procumbens Vernon H. Oswald; Lowell Ahart 1995-8-14 7202 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) on the E side of Horse Lake, 13.5 mi W of Hwy. 395, N of Susanville. On the shore of the lake. 1560 Comment
  NY170060  Hutchinsia procumbens A. Tiehm 1980-5-29 5749 Lassen N end of Honey Lake Valley, just N of Hot Springs, 1.1 air mi NNW of Wendel. 1231.4 Comment
  NY170061  Hutchinsia procumbens N. H. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1680 Comment
  UC1567386  Hydrophyllum capitatum var. alpinum G. Schoolcraft 1989-5-8 1872 Lassen about 1 mi e Silva Flat Reservoir 1737 Comment
  CDA40307  Hydrophyllum capitatum var. alpinum T. C. Fuller 1963-6-1 10639 Lassen 0.25 mile north of Willow Springs Campground, 3.1 miles southeast of Pittville-Susanville Road, 12.4 miles (road) south of Pittville. 0 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
  RSA88526  Hypericum androsaemum P. H. Raven 1951-7-27 3627 Lassen Lake Ediya Comment
  HSC93315  Hypericum scouleri Vernon H. Oswald, L. Ahart 1996-8-1 8127 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  SEINET5344266  Hypericum scouleri C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC7179  Idahoa scapigera Lynn R. Thomas 1969-4-17 101 Lassen E edge of Rice Canyon Rd., 4 mi. n of junction with 'back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  NY52523  Iliamna bakeri G. Schoolcraft 1983-8-3 1129 Lassen 5 miles w of Madeline 1767.8 Comment
  JEPS808  Ipomopsis aggregata Brown and Wieslander 1922-6-19 1 Lassen Martin Springs Eagle Lake Comment
  RSA18257  Ipomopsis aggregata subsp. formosissima Wolf 1929-9-1 3785 Lassen Mt. Lassen National Park between Grassy Lake and Snag Lake Comment
  RSA123124  Ipomopsis aggregata subsp. formosissima B. O. Schreiber 1936-6-25 S- 412 Lassen Burgess Spr. Exp. Range Comment
  UC23470  Ipomopsis congesta M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SD7674  Ipomopsis congesta Mrs. R. M. Austin 1880-1 Lassen Lassen Peak. Comment
  CHSC63410  Ipomopsis congesta subsp. congesta V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6354 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  CHSC72317  Ipomopsis congesta subsp. palmifrons L. P. Janeway; Glenn Clifton 1998-7-9 5728 Lassen Ridgetop saddle 1.0 mi east of Diamond Mtn. 2215 Comment
  UC506920  Ipomopsis tenuituba George A. Fischer and Irwin H. Johnson 1933-7-14 F 256 Lassen Lassen National Forest 1783 Comment
  CHSC4265  Iris missouriensis K. R. Stern 1967-6-24 2425 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  UC2013402  Isatis tinctoria Debra Valov 2012-6-19 1116 Lassen Just S of junction of Co. Road 87 A at Co. Road 87. Comment
  CHSC60804  Isoetes howellii Vernon H. Oswald 1993-6-28 5622 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  RSA0025413  Isoetes nuttallii Forrest Freund 2013-5-23 194 Lassen HWY 44. Near pond on the south west side of the road, in open patches. 1716 Comment
  UC1924201  Iva axillaris Debra Valov 2005-8-20 2005225 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1280 Comment
  CHSC76086  Iva axillaris subsp. robustior Lowell Ahart; Vernon H. Oswald 1999-9-13 8227 Lassen Along a slough, on the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC57121  Ivesia paniculata Mary Meyer 1980-7-1 Lassen Ash Valley. 1402 Comment
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Jan 15 2009
  CHSC64852  Ivesia paniculata Vernon H. Oswald 1995-6-26 6947 Lassen Modoc Plateau. Coyote Flat on Hunzinger Flat Rd. (FS 38N04) 5.6 mi s of its junction with Ash Valley Rd. (Lassen 527). 1783 Comment
  JEPS81018  Ivesia paniculata Thomas W. Nelson and Jane P. Nelson 1980-7-6 5984 Lassen 16 mi e Adin (along Adin-Madeline Rd); Ash Valley; Ash Valley, Lassen Co. 1554 Comment
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Nov 22 2007
  SEINET3860195  Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 mi E of Adin.; 0 1554 Comment
  UC1567359  Ivesia paniculata G. Schoolcraft 1980-7-14 306 Lassen w of Madeline; Ash Valley 1548 Comment
  UC1594838  Ivesia paniculata J. Stephen Shelly and Ginger V. King 1985-6-29 1029 Lassen Adin-Madeline Rd. Ash Valley (15.4 mi w of U.S. Hwy 395) 1554 Comment
  UC1594844  Ivesia paniculata J. Stephen Shelly and Ginger V. King 1985-6-29 1029 Lassen Adin-Madeline Rd. Ash Valley (15.4 mi w of U.S. Hwy 395) 1554 Comment
  SEINET6336292  Juncus balticus B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11503 Lassen Blue Door Flat, 7 or 8 miles east of Highway 395 on county road 510 1774 Comment
  UC1100949  Juncus balticus Verne Grant and Irving Schneider 1947-7-31 8211 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1100958  Juncus balticus Herbert L. Mason and Verne Grant 1947-7-9 13297 Lassen 5 mi e Bieber Comment
  UCD141340  Juncus balticus subsp. ater Herbert L. Mason; Verne Grant 1947-7-9 13297 Lassen 5 miles east of Bieber. Comment
  UC1567409  Juncus bufonius G. Schoolcraft 1989-7-18 1981 Lassen near Bucks Spring (s of Clarks Valley Road) 1874 Comment
  CHSC59101  Juncus bufonius var. bufonius Vernon H. Oswald; Lowell Ahart 1992-8-25 5187 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  JEPS114384  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
  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
  UC1601859  Juncus ensifolius Baker and Nutting 1894-7-24 Lassen Eagle Lake Comment
  UC1609524  Juncus hemiendytus var. abjectus Vernon H. Oswald and Lowell Ahart 1993-6-3 5481 Lassen between Poison Lake and Susanville (s. side of Pine Creek Valley, Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake); Pine Creek Valley 1725 Comment
  CAS-BOT-BC245809  Juncus hemiendytus var. hemiendytus Alice Eastwood; John Thomas Howell 1940-6-11 s.n. Lassen SW of Nubieber, Big Valley Mts. Comment
  SEINET3507366 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake Comment
  UC1543894  Juncus luciensis John Thomas Howell and Louella Bass 1974-7-10 50538 Lassen Elysian Valley Sierra Nevada 1325 Comment
  UC1100948  Juncus mexicanus Malcolm A. Nobs and S. Galen Smith 1947-8-1 8230 Lassen irrigation ditch running sw into State Fish & Game nesting area on w end of Section 19 Madeline Plain Comment
  CHSC67714  Juncus nevadensis James D. Jokerst 1983-7-25 1899 Lassen Madeline Plains W of Termo. Comment
  RSA201265  Juncus nevadensis J. T. Howell 1959-9-23 34884 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UC1100991  Juncus nevadensis Malcolm A. Nobs and S. Galen Smith 1947-8-24 8266 Lassen nw shore Blue Lake (n Lassen County) Comment
  UC1609497  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  UCD108039  Juncus occidentalis Tim Kuhn 2006-7-26 76 Lassen Eagle Lake Ranger District. Comment
  UC1142959  Juncus orthophyllus A. L. Hormay 1941-6-25 30 Lassen Westwood Junction Lassen National Forest 1737 Comment
  JEPS107949  Juncus tiehmii 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
  UCD168847  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley. 1740 Comment
  UCR263355  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen Cascade Range Highlands, south side of Route 44, southeast end of Grays Valley near Lodgepole 1730 Comment
  CHSC117179  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  JEPS126524  Juncus uncialis Lowell Ahart, John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC3494  Juniperus californica Roger Jaegel 1966-5-14 152 Lassen Located twenty-two miles north of Susanville, along the bank of Eagle Lake at C. S. C. Biological Station. Comment
  CAS-BOT-BC81148  Juniperus occidentalis Doris Kildale Gillespie 1930-5-12 9322 Lassen 2 miles north of Susanville on road to Alturas Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
Read comments
Apr 29 2013
  UCR164307  Juniperus occidentalis Maile Neel 2000-4-29 G- 01 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10834011  Juniperus occidentalis David B. Dunn 1956-7-3 Dunn 11918 Lassen Collected on rolling gravelly-rocky slopes with scattered juniper open field. Considerable Artemisia tridentata ( Hwy 395). Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 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
  CHSC60293  Juniperus occidentalis var. occidentalis Mary Ann Showers 1992-6-13 2531 Lassen East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. Lassen Volcanic National Park. 1841 Comment
  UCR3792  Juniperus occidentalis var. occidentalis Frank C. Vasek 1964-9-13 640913- 01 Lassen Warner Mtns., c. 1 mi east of Blue Lake Comment
  CHSC23328  Juniperus osteosperma Mark Stopher 1976-1-11 30 Lassen Ca. 52 miles south of Susanville on Hwy 395 then two miles east on Red Rock Road. 1328 Comment
  SD139404  Juniperus osteosperma F. C. Vasek 1964-9-12 day 6 Lassen U. S. 395, 5.2 miles north of its junction with State Highway 70 (U. S.40) 1480 Comment
  SEINET3865186 Image available Juniperus osteosperma Noel H. Holmgren, Patricia K. Holmgren 1970-7-28 4625 Lassen North end of Peterson Mountain, near US 395, 8 miles north of Halleluja Junction (junction with Calif. 70).; 0 1524 Comment
  SEINET5334994  Juniperus osteosperma J. T. Howell 1961-9-26 36969 Lassen East side of Beckwith Pass 1554 Comment
  CHSC60409  Kelloggia galioides Mary Ann Showers 1992-6-13 2541 Lassen Lassen Volcanic National Park. Along trail from Snag Lake jct to Widow Lake. 1828 Comment
  CHSC60920  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5657 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  UC1137699  Kelloggia galioides A. Simontacchi 1940-6-14 860 Lassen 7.5 mi wsw Schoonamaker Lake; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC7408  Kochia americana J. Burtt Davy Jun 17 1897-Jun 24 1897 3329 Lassen Honey Lake Valley 1219 Comment
  POM113359  Koeleria macrantha Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  UC1483844  Koeleria macrantha G. Schoolcraft 1980-7-28 335 Lassen e side Tule Mountain; e side of Tule Mtn. 2042 Comment
  UC1609258  Koeleria macrantha Vernon H. Oswald and Lowell Ahart 1993-6-28 5586 Lassen e Poison Lake (Harvey Valley Rd. (33N02) 1.2 mi n of Hwy 44, e side of Grays Valley); Grays Valley, e of Poison Lake 1731 Comment
  CAS-BOT-BC271327  Koeleria pyramidata Louella Bass 1973-6-3 92 Lassen Elysian Valley 1325 Comment
  CHSC66719  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1996-8-1 8116 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  CAS-BOT-BC349842  Lactuca tatarica subsp. pulchella Gary Schoolcraft 1986-9-4 1669 Lassen Along n. shore of Eagle Lake 33-12-30 1554 Comment
  UC1924230  Lagophylla ramosissima Debra Valov 2005-8-20 2005216 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UCR67436  Lagophylla ramosissima George K. Helmkamp 1990-9-23 A- 10 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC341482  Lagophylla ramosissima David D. Keck; J. Clausen 1935-6-25 3760 Lassen Susanville, on yellow-pine covered hills just W. of town 1300 Comment
  JEPS114639  Lamium amplexicaule Lowell Ahart, John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA0036999  Lamium amplexicaule Lowell A. Ahart, John Dittes 2008-6-20 14962 Lassen 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
  RSA0035916  Lasthenia glaberrima Lowell A. Ahart, John Dittes 2008-6-20 14901 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0042601  Lasthenia glaberrima Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen About 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1268 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
  SBBG22256  Layia glandulosa C. B. Hardham 1961-6-16 7486 Lassen Gold Run Crk, S of Susanville Comment
  UC30620  Layia glandulosa M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC321497  Layia glandulosa Margaret Williams 1974-7-27 74- 2 -51 Lassen Burned area near Hallelujah Junction, W of Hwy 395 and S of Hwy 70 1493 Comment
  CDA8139  Layia glandulosa Vernon H. Oswald & Lowell Ahart 1998-6-4 9143 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. Comment
  SEINET10473885  Layia glandulosa Mary Susan Taylor 1982-5-29 Taylor 4571 Lassen T22N R17E se/ne sec 11. Beckwourth Pass quad. Ca. 500 yds ne of the jct of Hwys 70 & 395 at Hallelula Jct, ca. 23 mi n of Reno. 5000 ft. 1524 Comment
  SEINET11447818 Image available Layia glandulosa M. S. Baker 1905-1 s.n. Lassen Dixey Valley Comment
  JEPS89219  Lemna minuscula Mrs. R. M. Austin June, 1894 Lassen Cold Springs, Willow Creek Valley Willow Creek Valley; North East California, Cold Springs, Willow Creek Valley Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC81481  Lepidium campestre Thomas W. Nelson, Jane P. Nelson 1980-7-6 6012 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 Comment
  CAS-BOT-BC89719  Lepidium latifolium John Thomas Howell 1975-7-23 51384 Lassen Sierra Nevada. Eagle Lake Cucumber Company yard. Susanville. 1295 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
  CHSC13634  Lepidium perfoliatum M. S. Taylor 1974-7-8 259 Lassen On e side of RT A3, ca. 1 mi n of Honey Lake, ca. 1 mi s of Standish, Honey Lake Wildlife Refuge. Comment
  CHSC5238  Lepidium perfoliatum L. Martin 1953-6-30 Lassen Eagle Lake. E side of Honey Lake near Doyle. 1299 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
  UC1143000  Lepidium perfoliatum August L. Hormay 1934-5-15 Lassen nw of Black Mt.; Lassen National Forest, Forest and Range Expt. Sta. 1584 Comment
  UC1137720  Leptodactylon pungens George A. Fischer, Irwin H. Johnson 1933-7-12 F 202 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  JEPS126521  Leptosiphon bolanderi Lowell Ahart, John Dittes 2016-6-7 20979 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC92716  Leptosiphon ciliatus L. P. Janeway; B. Castro 2005-7-10 8480 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of 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
  RSA713121  Leptosiphon ciliatus L. P. Janeway, B. Castro 2005-7-10 8480 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01. 1859 Comment
  CHSC25901  Leptosiphon harknessii K. R. Stern 1967-6-24 2427 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  SEINET3364450 Image available Leptosiphon harknessii Marcus E. Jones 1897-7-2 Lassen Susanville Comment
  SJSU6034  Leptosiphon harknessii J. W. Tilden 1960-6-27 1507 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  UC1553405  Leucocrinum montanum Gary Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  UC1609488  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  UC70406  Leucocrinum montanum Milo S. Baker 1891-1 Lassen near Adin; Big Valley 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
  POM71468  Leucophysalis nana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CHSC68756  Lewisia nevadensis Vernon H. Oswald; Lowell Ahart 1997-5-27 8523 Lassen Meadow along Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi north-east of Hwy. 139. 1731 Comment
  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
  UC803946  Leymus G. L. Stebbins Jr., P. Dansereau, K. Narayan, and C. McMillan 1949-8-6 4006 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  CAS-BOT-BC283773  Leymus cinereus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16336 Lassen 13.5 miles E of Susanville Comment
  JEPS68548  Leymus cinereus W. L. Jepson 1918-8-2 7795 Lassen Constantia Honey Lake Valley 1219 Comment
  UCD64268  Leymus cinereus L. D. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Camp #10. Comment
  CAS-BOT-BC274465  Leymus triticoides Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  UCD86642  Leymus triticoides J. Earl Coke 1931-6-1 s.n. Lassen Lassen County. 1524 Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  POM109714  Lilium pardalinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC13735  Lilium washingtonianum subsp. washingtonianum S. Villard 1973-7-3 58 Lassen On west side of county road going from Susanville to Plumas National Forest, 2 miles after pavement ends. Comment
  CHSC54871  Limosella acaulis Vernon H. Oswald 1991-9-23 4878 Lassen Butte Lake in the northeast corner of the park. Lassen Volcanic Park. 1841 Comment
  CHSC59098  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1992-8-25 5188 Lassen Grassy Creek at the E end of Snag Lake. Lassen Volcanic National Park. 1850 Comment
  CHSC112422  Limosella aquatica Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18755 Lassen Near a drainage filled with dirt from construction of a pond, about 50 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29863  Limosella aquatica Robin L. Ondricek 1978-8-9 124 Lassen At the ne edge of Mahogany Lake. 2057 Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  RSA772871  Limosella aquatica Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47205 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UC1123989  Linanthus ciliatus C. W. Hanks 1934-9-25 90 Lassen mts w Long Valley (near the Plumas National Forest); Sierraville Quad. 1767 Comment
  CHSC29952  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds on the w side of Eagle Lake. 1584 Comment
  UC1107337  Linanthus septentrionalis Jean Langenheim 1957-6-22 4367 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  UC867779  Linum lewisii Alice Eastwood Aug 22 1912-Aug 26 1912 1853 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC4431  Linum lewisii var. lewisii K. R. Stern 1967-7-1 2472 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 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
  CAS-BOT-BC111965  Lipocarpha micrantha John Thomas Howell 1974-7-10 50524 Lassen Elysian Valley 1325 Comment
  POM111784  Lipocarpha micrantha C. C. Bruce 1897-1 s.n. Lassen Susanville? Comment
Read comments
Jan 23 2011
  UC1483825  Lithophragma glabrum G. Schoolcraft 1980-4-8 201 Lassen e side Shaffer Mountain; e side Shaffer Mountain 1463 Comment
  JEPS47654  Lithophragma parviflorum T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC428416  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen Between Susanville and Janesville Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CHSC111397  Lithospermum arvense Lowell Ahart; John Dittes 2012-7-11 18351 Lassen On damp, bare soil, north edge of a farmed field, on the south side of the highway, about 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittville, 3955 feet east of Lassen-Shasta County Line, Fall River Valley. 1205 Comment
  UC1924235  Lithospermum ruderale Debra Valov 2004-6-9 2004259 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  JEPS19758  Lomatium bicolor var. leptocarpum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6006 Lassen 5.9 mi S of Madeline 1615 Comment
  RSA0049671  Lomatium bicolor var. leptocarpum Dean Wm. Taylor 2012-5-15 21195 Lassen Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley) 1676 Comment
  CAS-BOT-BC211117  Lomatium canbyi B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6552 Lassen Just S of Ravendale 1580 Comment
  CHSC77178  Lomatium canbyi G. Schoolcraft 1993-4-27 2255 Lassen Ash Valley RNA/ACEC. 1554 Comment
  RSA0049635  Lomatium foeniculaceum subsp. macdougalii Dean Wm. Taylor 2012-6-6 21225 Lassen Vicinity Hunsinger Flat (ca. 10 miles ESE of Adin), 88 feet due E of junction of Forest Road 38N33 with Forest Road 38N04 1600 Comment
  RSA517344  Lomatium nevadense Barbara Ertter, Gary Schoolcraft 1987-6-16 s.n. Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  UC1123036  Lomatium nevadense var. parishii K. E. Bradshaw 1939-5-27 241 A Lassen Plot 39-1 Black Mt. Exp. Forest (Lassen Nat'l Forest); , Halls Flat Quad., Black Mt. Exp. Forest Comment
  UC1123084  Lomatium nevadense var. parishii A. Simontacchi 1940-5-10 689 A Lassen 7.3 mi. w. Havey Mt. Lookout (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  CHSC7746  Lomatium piperi Beverly J. Wise 1969-3-29 115 Lassen Along Hwy 139 2 mi north of Susanville. 1341 Comment
  CHSC71066  Lomatium plummerae Vernon H. Oswald; Lowell Ahart 1998-5-22 9111 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
  UC1187705  Lomatium plummerae Tracey and Viola Call 1961-5-30 1961 Lassen about 3 1/2 mi S of Ravendale Comment
  CAS-BOT-BC217796  Lomatium ravenii B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6558 Lassen Just S of Ravendale 1580 Comment
  CHSC68607  Lomatium ravenii Vernon H. Oswald; Lowell Ahart 1997-5-7 8404 Lassen Smoke Creek Ranch Rd. 2.9 mi east of Hwy. 395. 1359 Comment
  NY406056  Lomatium ravenii L. Constance 1959-6-14 3672 Lassen One mile south of Ravendale 1463.0 Comment
  RSA0049612  Lomatium ravenii Dean Wm. Taylor 2012-6-7 21233 Lassen 1 mile south of Ravendale (along Highway 395, 100 meters East of the highway ROW) 1615 Comment
  UC1599737 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen s. Ravendale 1615 Comment
  UC1187701  Lomatium vaginatum Tracey and Viola Call 1961-5-30 2049 Lassen Horse Lake Road 1/8 mi w of jct with 395 about 1 1/2 mi s Ravendale; Horse Lake Road 1463 Comment
  UC1483809  Lomatium vaginatum G. Schoolcraft 1980-4-30 213 Lassen N of Shaffer Mountain 1365 Comment
  OBI48162  Lomatium vaginatum Rhonda Riggins 1989-4-27 1633 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  OBI81601  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2052 Lassen Lassen-Modoc Co. line near highway U.S. 395. 1676 Comment
  SD6574  Lonicera involucrata Mrs. R. M. Austin 1882-8-7 Lassen Hot Spring Valley. Comment
  CAS-BOT-BC200922  Lotus A. A. Heller 1938-7-28 15300 Lassen About a mile east of Westwood 1524 Comment
  CHSC25905  Lotus K. R. Stern 1967-8-1 2436 Lassen California State Hwy. 139, 14 mi. N of Susanville. Comment
  JEPS126486  Lotus corniculatus Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-16 CA 350 -050 Lassen Take Smoke Creek Road to Sand Pass Road. Turn left at Parker Reservoir. Comment
  CDA27193  Lotus crassifolius L. E. Allen 1967-6-4 Lassen Pinecrest Ranch, 0.5 mile south of Susanville. 0 Comment
  UC80913  Lotus crassifolius var. crassifolius unknown 1892-7-1 Lassen Susanville Comment
  UC1523783  Lotus oblongifolius var. oblongifolius Gary Schoolcraft 1981-7-14 534 Lassen s of Pittville (along Beaver Creek); Beaver Creek 1158 Comment
  UC15724  Lotus oblongifolius var. oblongifolius M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  RSA253250  Lotus unifoliolatus A. A. Heller 1938-6-23 15199 Lassen Slope east of Fredonyer Pass. 1646 Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  CHSC30579  Lupinus arbustus Sori H. Shad 1970-7-9 45 Lassen Found at edge of Dean's Meadow. 1828 Comment
  UC727083  Lupinus arbustus A. A. Heller 1938-6-4 15142 Lassen just w Fredonyer Pass (e of Westwood); just w of Fredonyer Pass 1706 Comment
  HSC63936  Lupinus arbustus subsp. calcaratus Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak near summit 2393 Comment
  SEINET10484655  Lupinus arbustus subsp. calcaratus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2577 Lassen 6 miles s of adin; along cal hwy 139 right-of-way; in basalt clay, grassy road Bank; artemisia, juniper assoc. 1372 Comment
  CAS-BOT-BC196339  Lupinus argenteus var. argenteus John Thomas Howell 1934-6-10 11910 Lassen 2 miles s. of Madeline Comment
  CAS-BOT-BC208730  Lupinus argenteus var. heteranthus L. S. Smith 1918-8-13 1035 Lassen Silver Cr., Modoc Forest Comment
  CAS-BOT-BC208746  Lupinus argenteus var. heteranthus John Thomas Howell 1934-7-10 12560 Lassen Black's Mt. Comment
  CAS-BOT-BC208751  Lupinus argenteus var. heteranthus John Thomas Howell 1934-7-10 12560 Lassen Black's Mt. Comment
  CAS-BOT-BC208753  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 mi. W of Doyle Comment
  CAS-BOT-BC208766  Lupinus argenteus var. heteranthus Beeson 1927-7-11 21470 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  CHSC36284  Lupinus argenteus var. heteranthus M. S. Taylor 1982-6-12 4653 Lassen In Doyle, ca. 0.5 mi e of Hwy 395. Comment
  CHSC7678  Lupinus argenteus var. heteranthus Beverley J. Wise 1969-5-18 61 Lassen 7.7 mi. East of Susanville on the south side of Las. Co. Rd. 125. 1341 Comment
  JEPS107302  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2005-6-1 11873 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, 3.8 miles (air) northwest of Hallelujah Junction 1448 Comment
  NY736922  Lupinus argenteus var. heteranthus N. H. Holmgren 1978-6-11 8925 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance 1800 Comment
  SBBG30558  Lupinus argenteus var. heteranthus D. Myrick 1968-6-19 1960 Lassen Hwy 395, 23 mi S of Alturas 1524 Comment
  SBBG3562  Lupinus argenteus var. heteranthus H. and M. Dearing 1938-6-30 2228 Lassen Poison Lake, 40 mi W of Susanville 1219 Comment
  UC83091  Lupinus argenteus var. heteranthus T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  SEINET5327987  Lupinus argenteus var. heteranthus J. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, CA 1372 Comment
  CHSC93547  Lupinus argenteus var. meionanthus Lowell Ahart; John Dittes 2005-6-2 11937 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  CAS-BOT-BC196639  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC196642  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  HSC14808  Lupinus caudatus M. T. Milligan 1964-8-6 207 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA39736  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford. 1265 Comment
  RSA60369  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 miles south of Doyle. 1372 Comment
  SEINET10490606  Lupinus caudatus subsp. caudatus H. Dearing, M. Dearing 1938-6-30 Dearing 2228 Lassen 40 mi. W of susanville, poison lake. 1219 Comment
  SEINET10490707  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11919 Lassen Collected on rolling gravelly slopes, in spots of deeper soil and also in Runoff areas from the hwy. Comment
  SEINET10936574  Lupinus caudatus subsp. caudatus Katherine L. Morris 1973-5-25 Morris 213 Lassen Collected in an area of artemisia tridentata, 4 mi se of susanville, on us 36. Comment
  RSA0029190  Lupinus confertus John F. Emmel 1997-6-8 1490 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  SEINET10940170  Lupinus confertus Thomas W. Nelson, Jane P. Nelson 1981-7-17 Nelson 6735 Lassen Along State Route 395, 22 mi S of Susanville, California, at milepost marker 46.80. Sagebrush scrub. 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
  UC127007  Lupinus lepidus var. confertus M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC169643  Lupinus lepidus var. confertus T. S. Brandegee 1892-6-27 Lassen Milford Comment
  UC527349  Lupinus lepidus var. confertus C. B. Wolf 1931-9-6 2404 Lassen on the road to Wendel 1/2 mi from Janesville (western edge of Honey Lake Valley); western edge of Honey Lake Valley 1280 Comment
  UCD108246  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395, ca 7.8 miles southeast of Susanville. 1293 Comment
  NY747210  Lupinus lepidus var. confertus G. Schoolcraft 1982-7-14 782 Lassen Along Highway 395 near Janesville 1311 Comment
  NY747211  Lupinus lepidus var. confertus M. J. Williams 1983-7-31 83- 126 --1 Lassen Roadside near Janesville 1280 Comment
  SEINET8051636  Lupinus lepidus var. confertus G. Schoolcraft 1992-8-11 2246 Lassen Along Highway 395 near inters. of Janesville Road 1280 Comment
  RSA121632  Lupinus leucophyllus G. A. Fischer, Irwin H. Johnson 1933-7-12 204 Lassen Grass Valley 1701 Comment
  UCD107952  Lupinus leucophyllus Verne Grant; Irving Schneider 1947-8-1 8232 Lassen Madeline Plain. Comment
  SEINET10841246  Lupinus lyallii var. lyallii Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park, near the peak. In dry ground. Comment
  CHSC99103  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC202121  Lupinus nevadensis B. J. Cox; Paul Gallian 1971-6-2 2595 Lassen Hallelujah Jct. intersection of U.S. 395 and Calif. Hwy. 70 1432 Comment
  JEPS94110  Lupinus nevadensis Vernon H. Oswald and Lowell Ahart 1998-5-22 9113 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1402 Comment
  CHSC5288  Lupinus obtusilobus 1944-7-26 Lassen Juniper Lake. 2055 Comment
  HSC76493  Lupinus polycarpus B. J. Cox, Paul Gallian 1971-6-2 2576 Lassen 6 mi. S of Adin, along Hwy. 139 right-of-way 1372 Comment
  SEINET10871085  Lupinus polycarpus Marcus E. Jones 1897-6-26 Jones s.n. Lassen Susanville, perkin's ranch. 1463 Comment
  UC82153  Lupinus polyphyllus var. burkei T. S. Brandegee 1892-7-28 Lassen Janesville Comment
  HSC76485  Lupinus sellulus var. sellulus B. J. Cox 1971-6-11 3186 Lassen 3 mi. E of Westwood, Hwy. 36 1608 Comment
  POM252848  Lupinus subvexus var. subvexus A. A. Heller 1938-6-23 15219 Lassen Along U. S. H ighway 395 between Termo and Madeline. 1524 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
  CAS-BOT-BC231452  Lycium barbarum John Thomas Howell 1974-7-8 50512 Lassen Susanville 1295 Comment
  UC766758  Lycium halimifolium R. F. Hoover 1940-10-1 4652 Lassen Johnstonville Comment
  HSC95307  Lycopus uniflorus Gordon Leppig, J. Cromwell 1997-7-27 625 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95311  Lycopus uniflorus Gordon Leppig 1998-8-17 1051 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS88431  Lythrum portula Vernon H. Oswald and Lowell Ahart 1996-8-1 8104 Lassen sw of Westwood (ne of Indian Ole Dam, Mountain Meadows Reservoir); Mountain Meadows Reservoir Comment
  RSA252467  Machaeranthera canescens var. canescens R. F. Thorne, C. W. Tilforth 1969-9-6 39268 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC342658  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen Intersection of Hwy. 139 & A2 south of Adin Comment
  CAS-BOT-BC343695  Madia elegans Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  CHSC30624  Madia elegans E. C. Taylor 1975-7-19 73 Lassen Ca. 30 yds nw of ELFS Vesta Holt Hall. 1584 Comment
  JEPS40375  Madia elegans W. L. Jepson 1939-8-11 19373 Lassen Milford 1280 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
  UC2047849  Madia exigua Debra Valov 2016-6-20 1297 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; on NW-facing, dry, rocky outcrop. Comment
  UC33229  Madia exigua M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  UC469045  Madia exigua Franklin P. Nutting Lassen Dixie Valley Comment
  SEINET515862  Madia glomerata Vernon H. Oswald 1998-9-8 9576 Lassen Hwy. 299 at the railroad overpass on the east side of Nubieber. 1256 Comment
  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
  CAS-BOT-BC508541  Maianthemum racemosum subsp. amplexicaule Alice Eastwood 1912-8-22 1787 Lassen Trail from Morgans Springs to Sulphur Works Comment
  SJSU10452  Maianthemum stellatum H. L. Buckalew 1961-7-9 Lassen spring near Blue Lake, Warner Mts 1828 Comment
  UC1567438  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi N Wendel Road, along Skedaddle Ranch Rdoad. 1493 Comment
  CHSC6212  Marsilea vestita J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  UCD18955  Marsilea vestita Raymond D. Ratliff 1965-7-22 23 Lassen Lassen National Forest, Harvey Valley Allot. (HV 78-73). 1706 Comment
  HSC935  Marsilea vestita Fred J. Kindel 1955-6-25 Lassen Eagle Lake Comment
  JEPS97378  Marsilea vestita subsp. vestita Vernon H. Oswald and Lowell Ahart 1995-8-14 7201 Lassen N of Susanville (Horse Lake Rd (Lassen 536) at a BLM reservoir, 11.3 mi W of Hwy 395); Modoc Plateau 1737 Comment
  RSA715623  Matricaria matricarioides L. Ahart, John Dittes 2005-6-1 11895 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  CAS-BOT-BC271118  Melica bulbosa G. Schoolcraft 1995-5-17 2490 Lassen Three Springs on S slope of Five Springs Mtn. 1524 Comment
  UC1024833  Melica bulbosa Leo Whitney 1935-6-11 3226 Lassen Fruit Grower's Supply Company, Camp 10; Lassen National Forest Comment
  CHSC30586  Melilotus indicus P. V. Caldwell 1972-6-30 270 Lassen Jct. of Horse Lake Rd. and Hwy. 395. Comment
  JEPS121277  Melilotus officinalis Lowell Ahart, John Dittes 2013-7-22 18868 Lassen On the sides of the levee road, about 100 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC58842  Mentha canadensis Vernon H. Oswald; Lowell Ahart 1992-7-16 5109 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  CHSC48604  Mentzelia albicaulis Vernon Oswald 1986-5-28 2055 Lassen Rd. 201 on the w side of Eagle Lake 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  SD130461  Mentzelia albicaulis John Thomas Howell 8-9 Jul 1974 50466 Lassen Susanville Comment
  HSC31748  Mentzelia congesta Donald Spalinger 1974-5-16 61 Lassen 300 yds. S of intersection of Rd. A3 and H 395 1250 Comment
  CHSC4782  Mentzelia dispersa R. Carter 1967-6-27 566 Lassen 1.75 mi W of Eagle Lake Biology Station. Growing in dry rocky soil ca. 10 yds. off S side of Rd. 1584 Comment
  JEPS107292  Mentzelia dispersa Lowell Ahart, John Dittes 2005-6-1 11872 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
  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
  HSC15864  Mentzelia dispersa R. G. Means 1962-7-4 69 Lassen 15.5 mi. N of Susanville, Hwy. 139 1524 Comment
  JEPS20798  Menyanthes trifoliata W. L. Jepson 1910-6-10 4111 Lassen East Fork of King Creek toward Turn Lakes (Lassen Peak Region); , East Fork King Creek 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
  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
  UC1070116  Microseris nutans Robert W. Gardner 1937-6-16 G- 14 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  CAS-BOT-BC349299  Microseris nutans Elmer I. Applegate 1929-6-21 5778 Lassen Kelly's Camp, Warner Valley, Mt. Lassen region Comment
  CHSC6206  Microsteris gracilis C. Palmiter 1946-6-20 Lassen Grasshopper Valley. Eagle Lake. 1624 Comment
  CHSC7702  Microsteris gracilis Beverley J. Wise 1969-4-13 42 Lassen 2.4 mi. east of junction Hwy 395 and Las. Co. Rd. 388 (Smoke Creek Road). 1371 Comment
  UC726695  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi e Westwood 1524 Comment
  SEINET10570320  Mimulus guttatus Jeffrey Huber 1971-6-11 Huber 320 Lassen 3 mi e of westwood, on calif hwy 36, in volcanic soils, in pinus jeffreyi. 1608 Comment
  JEPS97419  Mimulus latidens Vernon H. Oswald and L. Ahart 1995-6-19 6887 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395 1350 Comment
  JEPS94563  Mimulus mephiticus Vernon Oswald and Lowell Ahart 1997-6-24 8597 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 Comment
  UC1136833  Mimulus microphyllus L. R. Short and J. Warren 1936-6-10 S- 417 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1856 Comment
  POM43476  Mimulus moschatus var. longiflorus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 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
  UC1561980  Mimulus nanus var. mephiticus Barbara Ertter with Gary Schoolcraft 1987-6-16 7197 Lassen saddle on e side Hot Springs Peak (on ne side of lake); Skeedaddle Mountains, Honey Lake 2194 Comment
  UC886157  Mimulus nanus var. mephiticus A. A. Heller 1938-6-22 15188 Lassen about 1 1/2 mi s Westwood 1524 Comment
  RSA60366  Mimulus nanus var. nanus E. K. Balls 1950-5-9 15953 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  RSA434702  Mimulus primuloides Christopher Davidson 1974-7-25 2495 Lassen Lassen Volcanic Nat. Park. On rd to Juniper Lake. 1982 Comment
  SBBG26857  Mimulus pulsiferae C. L. Hitchcock 1940-5-28 6611 Lassen lava beds, ca. 18 mi N of Fall River Mills on Fall River Comment
  UC1063104  Mimulus pulsiferae A. Simontacchi 1940-6-15 862 Lassen 2.3 mi ssw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA536390  Mimulus pygmaeus Beth Corbin 1991-5-23 618 Lassen Adobe South Vernal Pool, 3 miles N of Timbered Crater, 14 miles N of Fall River Mills. 1098 Comment
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Jul 2 2013
  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
  RSA536395  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-20 629 Lassen Gray's Valley, 4.5 miles N of USFS Bogard Work Center. 1715 Comment
  UC1609384  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1993-6-14 5522 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89)); Eagle Lake 1566 Comment
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Nov 22 2007
  HSC26594  Mimulus torreyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19161 Lassen 3 mi. N of Westwood Comment
  RSA152664  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  CAS-BOT-BC221780  Monardella odoratissima Gordon H. True 1936-6-27 552 Lassen Between Bull Flat and Hot Spring Mt. 1524 Comment
  CHSC27650  Monardella odoratissima Cindy Prouty 1978-7-10 2 Lassen Colman L., several mi SE of Eagle L. 1962 Comment
  CAS-BOT-BC221972  Monardella odoratissima subsp. glauca John Thomas Howell 1934-6-10 11888 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  RSA122018  Monardella odoratissima subsp. glauca L. R. Short, Wm Gansberg 1936-7-3 S- 467 Lassen MDM, Burgess Spr. Exp. Range. 1849 Comment
  CHSC12413  Monardella odoratissima subsp. pallida Anne Linda Brisk 1969-7-10 42 Lassen 6 mi from ELBS on Road 5A. 1889 Comment
  CHSC27651  Monardella odoratissima subsp. pallida N. E. Heiken 1978-7-27 94 Lassen Beneath Pine Creek Birdge, just W of fish trap. 1560 Comment
  OBI77205  Monolepis nuttalliana Anthony Baniaga 2011-7-23 462 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  POM103154  Monolepis spathulata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC93672  Montia linearis Lowell Ahart; John Dittes 2005-6-2 11956 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
  RSA0035909  Montia linearis Lowell A. Ahart, John Dittes 2008-6-20 14938 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA122965  Montia linearis L. R. Short, Wm Gansberg 1936-6-8 s 392 Lassen Burgess Spring Exp. Range 1744 Comment
  RSA715990  Montia linearis L. Ahart, John Dittes 2005-6-2 11956 Lassen Along poor dirt road, 1 mile E of Anderson Ranch home, Long Valley, 4.5 miles air N of the intersection of Scott Road and Hwy 70, 6 miles NW of Hallelujah jct. 1426 Comment
  UC1609172  Montia linearis Vernon H. Oswald and Lowell Ahart 1993-6-28 5611 Lassen ne of Poiston Lake (on the sse flank of Harvey Mountain, n of Hwy 44 on Rd, 33N06, nne of Burgess Meadow); Harvey Mountain 1798 Comment
  SBBG69755  Montia linearis E. Rockwell -Jun-1925 782 Lassen near Honey Lake 1219 Comment
  CAS-BOT-BC262638  Muhlenbergia asperifolia Gary Schoolcraft 1983-7-13 1082 Lassen E. shore of Eagle Lake near Chico Biol. Stat., 32-11-15 1554 Comment
  JEPS107815  Muhlenbergia asperifolia Lowell Ahart, John Dittes 2005-6-2 11972 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  UCD86562  Muhlenbergia asperifolia R. Tofsrud 1947-7-1 227 Lassen Between Johnstonville and Standish. Comment
  CAS-BOT-BC260595  Muhlenbergia filiformis G. Schoolcraft 1997-7-30 2623 Lassen W slope of Diamond Mountain 1889 Comment
  HSC95304  Muhlenbergia filiformis Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 680 Lassen Modo National Forest, Blue Lake Ranch. 1970 Comment
  UC60836  Muhlenbergia jonesii M. S. Baker and Frank Nutting 1894-7-30 Lassen near Silver Lake Comment
  RSA268991  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1972-7-24 5812 Lassen Lassen National Forest; 17 miles NW of Susanville, along Hwy 44 1128 Comment
  UC1024803  Muhlenbergia richardsonis Leo Whitney 1935-6-23 3290 Lassen meadow Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  SACT001607  Muhlenbergia squarrosa Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  RSA377621  Muilla transmontana Christopher Davidson 1975-6-7 2762 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1567382  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen Susanville NW corner of Secret Valley near Karlo. 1356 Comment
  CAS-BOT-BC515650  Muilla transmontana H. D. Ripley; R. C. Barneby 1944-5-29 5953 Lassen South of Jamesville 1280 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
  UCD55284  Myosurus apetalus Ellen Dean; Gary Schoolcraft 2006-5-16 3103 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  CHSC68868  Myosurus apetalus var. borealis Vernon Oswald; Lowell Ahart 1997-6-24 8651 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. In a meadow. 2249 Comment
  RSA0035919  Myosurus minimus Lowell A. Ahart, John Dittes 2008-6-20 14940 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET200135 Image available Myriophyllum exalbescens Verne Grant, Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
  JEPS94128  Nama aretioides var. californica Vernon H. Oswald and Lowell Ahart 1998-5-22 9105 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
  CDA40304  Nama aretioides var. multiflora S. E. Piper 1943-7-2 s.n. Lassen 0.5 mile east of Herlong. 0 Comment
  SEINET10969184  Nama densa Mary Susan Taylor 1974-1 Taylor 305 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC91324  Nama densa var. densa Lowell Ahart; John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction. 1461 Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  UC133863  Navarretia breweri Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC1609452  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake rd (Lassen A1) ca 3 mi w Eagle Lake (0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  UC604552  Navarretia breweri C. W. Sharsmith 1938-7-18 3638 Lassen 3 mi s Termo; Madeline Plains Comment
  CHSC14175  Navarretia divaricata K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5806 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  CHSC26881  Navarretia divaricata K. R. Stern 1974-6-26 5863 Lassen 100 yds. s of Hwy. 44, 34 mi nw of Susanville. Meadow. Comment
  CHSC44331  Navarretia divaricata Lowell Ahart; John Thomas Howell 1974-7-9 541 Lassen Along Eagle Lake Road, on the south-west side of Eagle Lake. 1584 Comment
  UC1137719  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  CHSC112979  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2013-7-22 18853 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
  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
  CHSC67574  Navarretia leucocephala subsp. leucocephala James Jokerst 1983-7-24 1878 Lassen Near madeline Plains. Vernal pool. 1614 Comment
  CHSC89737  Navarretia leucocephala subsp. minima L. P. Janeway 2004-6-26 8145 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
  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
  JEPS88516  Navarretia leucocephala subsp. minima Vernon H. Oswald and Lowell Ahart 1996-6-24 7847 Lassen Papoose Meadows located ca. 0.5 mi. e. of Eagle lake Rd. (A1) and 2.5 mi. s. of Eagle Lake (on w. side of the meadow just s. of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1112252  Navarretia leucocephala subsp. minima R. C. Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (Highway 395); Madeline Plains 1615 Comment
  SEINET2440302  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2005-7-28 05 -220 Lassen Lassen Natl. Forest, NE Long Lake vicinity. Off Hwy 44 at mile marker 20.74. Along 31N01 leading to NE edge of lake.; 0 1712 Comment
  CHSC89726  Navarretia sinistra subsp. sinistra L. P. Janeway 2004-6-26 8148 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  HSC103518  Navarretia sinistra subsp. sinistra Thomas W. Nelson, Jane Nelson 1986-6-23 8164 Lassen Along State Route 44, 14.5 mi. NW of junction with State Route 36. 1646 Comment
  CAS-BOT-BC219366  Nemophila Louella Bass 1973-4-15 26 Lassen Elysian Valley 1325 Comment
  POM73805A  Nemophila parviflora var. austiniae Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  HSC30192  Nemophila spatulata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19156 Lassen 3 mi. N of Westwood Comment
  CHSC116095  Nepeta cataria Lowell Ahart; John Dittes 2015-7-13 20313 Lassen Along levee road, about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC349855  Nestotus stenophyllus Alice Eastwood; John Thomas Howell 1940-6-15 8314 Lassen Upper Willow Creek east of Hayden Hill Comment
  UC1191769  Nicotiana acuminata var. multiflora Verne Grant and Irving Schneider 1947-9-7 8399 Lassen 0.5 mi w Litchfield (Susan River by Highway 395 at Bridge 7-34); Susan River Comment
  HSC21264  Nicotiana attenuata R. G. Means 1962-7-4 67 Lassen 7 mi. N of Susanville, Hwy. 139 1585 Comment
  HSC21267  Nicotiana attenuata M. T. Milligan 1964-8-23 238 Lassen 400 yards E of Siad Valley Reservoir on Termo Rd. 1524 Comment
  HSC4506  Nitrophila occidentalis Fred J. Kindel 1955-7-14 Lassen Wendel Comment
  UCD50215  Nymphaea odorata subsp. tuberosa Daniel B. Marcum 2004-6-1 s.n. Lassen Near warm spring in the Fall River Valley, Lassen County. 1005 Comment
  UC1584022  Oenothera deltoides subsp. cognata G. Schoolcraft 1990-6-12 2086 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  JEPS94105  Oenothera deltoides subsp. piperi Vernon H. Oswald and Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  UC566272  Oenothera deltoides subsp. piperi E. Sawyer 1935-6-27 231 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  RSA8247  Oenothera flava Elmer I. Applegate 1929-6-24 5881 Lassen Big Valley south of Bieber Comment
  SEINET3150416  Oenothera tanacetifolia E. K. Balls 1950-5-9 15954 Lassen 5 mi. S of Modoc Co. line, Hwy 395 1219 Comment
  CAS-BOT-BC349944  Onopordum acanthium T. C. Fuller 1958-7-8 898 -58 Lassen Highway 299, 0.1 mi. S. of Lassen County Line Comment
  CAS-BOT-BC350039  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen About a mile east of Westwood 1524 Comment
  CAS-BOT-BC350042  Oreostemma alpigenum var. andersonii Hans Leschke 1958-9-30 1571 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  CHSC5198  Oreostemma alpigenum var. andersonii M. West 1955-7-10 Lassen Eagle Lake. Stephen's Ranch. 1905 Comment
  JEPS103166  Orobanche corymbosa Beth Corbin 2002-7-10 1087 Lassen Madeline Plains, 5 air mi N of top of Observation Peak. 1627 Comment
  JEPS70105  Orobanche corymbosa subsp. corymbosa L. Maynard Moe 1969-8-4 103 Lassen About 1 mile north of Litchfield on U. S. Highway 395. Comment
  CAS-BOT-BC502937  Orobanche uniflora G. Schoolcraft 1999-4-21 2813 Lassen On E. Bald Mtn about 10 mi SE of Susanville 1341 Comment
  SEINET10935676  Orobanche uniflora Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2594 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road on Rolling knoll, in artemisia-juniper assoc. 1372 Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  JEPS9435  Orthocarpus cuspidatus subsp. cryptanthus Brown and Wieslander 42 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  UC172657  Orthocarpus cuspidatus subsp. cryptanthus Frank Stephens July, 1894 Lassen Bunch Grass Spring Comment
  POM82799  Osmorhiza occidentalis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CHSC59070  Oxypolis occidentalis Vernon H. Oswald; Lowell Ahart 1992-8-25 5194 Lassen Lassen Volcanic National Park. Forested slope at the E corner of Snag Lake. 1853 Comment
  UC768463  Oxytheca dendroidea subsp. dendroidea R. F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  CAS-BOT-BC316809  Packera cana Alice Eastwood; John Thomas Howell 1940-6-15 8313 Lassen Upper Willow Creek East of Hayden Hill Comment
  HSC81188  Packera cana Thomas W. Nelson, Jane P. Nelson 1980-7-6 5990 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC316858  Packera eurycephala var. eurycephala C. C. (Mrs.) Bruce 1898-6-1 2176 Lassen Shumway Comment
  CAS-BOT-BC316860  Packera eurycephala var. eurycephala Alice Eastwood; John Thomas Howell 1940-6-11 7968 Lassen Eastern Fall River Valley Comment
  CHSC7639  Packera multilobata Beverley J. Wise 1969-5-3 27 Lassen 4.5 mi. east of junction of Hwy 395 and Las. Co. 338 (Smokey Creek Road). 1554 Comment
  CAS-BOT-BC317058  Packera multilobata Elmer Ivan Applegate 1897-6-3 867 Lassen south of Madeline plains Comment
  CHSC93246  Packera streptanthifolia John Dittes; Scott Chamberlain 2004-6-28 1011 Lassen Modoc Plateau; Long Valley; ca. 2.0 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1448 Comment
  HSC63735  Paeonia brownii Teresa Prendusi 1980-4-22 Lassen Along State Rte. 139, 0.5 mi. NE of Susanville 1280 Comment
  CHSC112794  Panicum Lowell Ahart; John Dittes 2013-7-23 18909 Lassen On the east side of the gravel road, north-south road west of Big Canal, 0.76 mile north of State Highway 299, 4.9 miles (air) northeast of Bieber, Big Valley. 1257 Comment
  CAS-BOT-BC253718  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen In city park, Susanville 1295 Comment
  UC1131606  Panicum capillare H. S. Yates 1936-8-11 6073 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  UCD89524  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen Susanville. 1295 Comment
  CAS-BOT-BC259609  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE of Shaffer Mountain 1356 Comment
  CHSC71077  Pectocarya setosa Vernon H. Oswald; Lowell Ahart 1998-5-22 9098 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  JEPS94131  Pectocarya setosa Vernon H. Oswald and Lowell Ahart 1998-5-22 9098 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
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  RSA121814  Pedicularis semibarbata G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 272 Lassen Lassen Forest. 1738 Comment
  SEINET10931175  Pedicularis semibarbata Katherine L. Morris 1973-5-25 Morris 236 Lassen Collected 7.6 mi nw of jct of hwy 36 & 44 on hwy 44, in an area of yellow pine And incense cedar, very moist area. Comment
  SBBG66504  Penstemon deustus S. W. Hutchinson -Jun-1925 1075 Lassen Eagle Lake 1554 Comment
  POM195123  Penstemon deustus subsp. sudans 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
  CHSC4272  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-24 2426 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  RSA165523  Penstemon deustus var. pedicellatus Clare B. Hardham 1961-6-17 7532 Lassen Rte. 395 between Lassen and Alturas. Comment
  SEINET5326740 Image available Penstemon deustus var. pedicellatus G. Schoolcraft 1993-6-29 2309 Lassen Ash Valley RNA between Adin & Madeline, CA 1585 Comment
  CHSC23498  Penstemon gracilentus Wayne O. Baum 1971-7-7 71 -85 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC29258  Penstemon gracilentus J. D. Prouty 1978-6-28 11 Lassen E of Eagle L., at W shore of Lower Dy L. Comment
  CHSC80282  Penstemon gracilentus Jeanne Boze 1981-6-11 103 Lassen About 5 m from road, along Horse Lake Road, 5.5 mi from Hwy 139. 1676 Comment
  NY600719  Penstemon gracilentus A. M. Alexander 1946-8-13 5157 Lassen West side of Eagle Lake Comment
  RSA537557  Penstemon gracilentus Barbara Ertter 1988-7-25 7866 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UC1063186  Penstemon gracilentus A. Simontacchi 1940-6-20 851 Lassen 4.1 mi w Harvey Mountain Lookout; Lassen National Forest, Hall's Flat Quad. Comment
  SEINET10325483  Penstemon gracilentus K. A. Vincent 1986-7-19 4382 Lassen Sierra Nevada Roop Mtn.; common in burned area in pine-spruce forest along CA A1 at Eagle Lake Summit ca 7.6 mi N of j 1932 Comment
  UCD124179  Penstemon gracilentus K. M. Meyer; A. Townesmith 2007-7-23 157 Lassen Lassen National Forest. 3.9 miles southwest on 32N10 off Hwy 44. (Turn at rest area). 503 Comment
  CHSC60419  Penstemon heterodoxus var. shastensis Mary Ann Showers 1992-6-12 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  SEINET10548051  Penstemon miser Mary Susan Taylor 1974-1 Taylor 276 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. 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
  UC423645  Penstemon neotericus David D. Keck 1930-7-23 957 Lassen two mi e Westwood; Sierra Nevada, e of Westwood 1493 Comment
  CHSC4267  Penstemon roezlii K. R. Stern 1967-6-24 2417 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC5913  Penstemon roezlii R. Gein 1946-6-26 Lassen Eagle Lake. Pine Creek bridge. 1584 Comment
  CHSC60859  Penstemon roezlii Vernon H. Oswald; Lowell Ahart 1993-6-28 5618 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
  NY650100  Penstemon roezlii G. Schoolcraft 1982-6-16 701 Lassen North of Shinn Ranch 1548.4 Comment
  NY650101  Penstemon roezlii T. W. Nelson 1980-7-6 6021 Lassen Adin Quad. Along Adin-Madeline road ca. 0.5 mile west of Moll Reservoir. 1585.0 Comment
  NY650115  Penstemon roezlii F. W. Pennell 1940-6-9 25755 Lassen Route 395, 5 miles north of Madeline 1676.4 Comment
  UC690327  Penstemon roezlii John Thomas Howell 1934-6-10 11877 Lassen on road to Horse Lake 12 mi n Susanville; n of Susanville on road to Horse Lake Comment
  NY650103  Penstemon roezlii J. T. Howell 1974-7-30 50689 Lassen Slope south and southeast of Diamond Mountain 2225.0 Comment
  SEINET5323614 Image available Penstemon rydbergii N. H. Holmgren, P. K. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CAS-BOT-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-BC239508  Penstemon rydbergii var. oreocharis H. D. Ripley; R. C. Barneby 1943-6-13 5706 Lassen 8 miles S. of Milford 1859 Comment
  CAS-BOT-BC239510  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 4 miles east of Westwood 1432 Comment
  JEPS118278  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
  JEPS12898  Penstemon rydbergii var. oreocharis G. S. Crew and C. S. Robinson 1927-7-1 49 Lassen Bogard R.S. pasture Lassen Forest <sw?>, Bogard R.S. pasture 1712 Comment
  NY651293  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 3 miles east of Westwood Comment
  UCD39133  Penstemon rydbergii var. oreocharis Beecher Crampton 1964-6-26 7081 Lassen 32 miles n.w. Susanville east end of Harvey Valley. 1694 Comment
  CHSC98580  Penstemon speciosus B. Castro; L. P. Janeway 2005-7-10 1495 Lassen Northern High Sierra Nevada. Crest of the Diamond Mtns, overlooking Janesville and Honey Lake, 0.15 mi N of Rd 28N01 and 0.4 mi E of its junction with Janesville Grade (Rd 29N01/Rd 208). Knoll on N side of crest, in soft decomposed granite soil among rounded granite boulders. 1859 Comment
  JEPS95972  Penstemon speciosus Vernon H. Oswald and L. Ahart 1999-6-9 9747 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
  NY660809  Penstemon speciosus N. H. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale. 1680 Comment
  NY661010  Penstemon speciosus L. Constance 1938-6-11 2331 Lassen 3.5 miles north of Secret Valley, Madeline Plains on Susanville-Alturas road 1524.0 Comment
  NY661040  Penstemon speciosus G. W. Gillett 1953-7-1 273 Lassen Fredonyer Pass, Highway 36. Lassen National Forest. 1752.6 Comment
  POM44291  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  POM44889  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 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
  SBBG54516  Penstemon speciosus F. W. Pennell 1940-7-23 26254 Lassen 2 mi N of jct with St Hwy 24, NE of Plumas Comment
  CAS-BOT-BC239660  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen 2 miles east of Fredonyer Pass 1645 Comment
  CAS-BOT-BC243406  Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen NE of Shaffer Mtn. 1356 Comment
  CAS-BOT-BC243411  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville 1280 Comment
  CAS-BOT-BC243413  Penstemon sudans Alice Eastwood; John Thomas Howell 1940-6-15 8327 Lassen Round Valley Comment
  OBI75899  Penstemon sudans Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 478 Lassen Lassen Natl Forst. Hwy 36, ca. 1/4 mi E of "Fredonyer Pass Winter OHV Parking Lot" Fredonyer Pass quad T29N R10E sec 2 NW of SW 1950 Comment
  UC1012184  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36 hill w Susanville; hill w of Susanville 1371 Comment
  UC1561843  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains 1828 Comment
  UC423647  Penstemon sudans David D. Keck 1930-7-23 953 Lassen 4 mi w Susanville; Sierra Nevada 1463 Comment
  RSA0006234  Penstemon sudans Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC65998  Peraphyllum ramosissimum Vernon H. Oswald; Gary Schoolcraft 1996-5-11 7551 Lassen Modoc Plateau. Slope along the road to the pteroglyphs on the rim of Willow Creek N of Belfast (ca. 12 mi ENE of Susanville). 1280 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
  RSA723862  Perideridia bolanderi subsp. bolanderi David H. French 1968-6-3 2882 Lassen N of Honey Lake, W side of Highway 395, 7.4 miles NE of Litchfield Comment
  SEINET11153153  Perideridia bolanderi subsp. bolanderi D. French 1968-6-3 2882 Lassen N of Honey Lake, W side of Hwy 395, 7.4 miles NE of Litchfield. Comment
  JEPS123495  Perideridia gairdneri subsp. gairdneri M. Dolan, W. Collison, J. Merced 2015-7-9 CA 320 -141 Lassen From Highway 139, follow signs for Hayden Hill (about 8.5 mi from 139 - Grasshopper Road, intersect goring north) Right 1st fork, left 2nd fork, right 3rd fork, then left toward Silva Flat (1/4 mi after last fork) Comment
  CHSC30561  Persicaria Sori H. Shad 1970-6-19 8 Lassen Found on pine creek, 50 yard below california fish and game cambine [sic[. 1524 Comment
  CHSC13648  Persicaria amphibia M. S. Taylor 1974-7-10 312 Lassen Abundant in floating masses along w shore of Eagle Lake in vicinity of Grebe Nesting Area, ca. 13 mi nw of Susanville. 1524 Comment
  SJSU10648  Persicaria amphibia H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CHSC71885  Persicaria lapathifolia Vernon H. Oswald 1998-9-8 9583 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1258 Comment
  JEPS79215  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  UC1603542  Phacelia adenophora Arnold Tiem, Margaret Williams, and Jan Nachlinger 1988-6-2 11701 Lassen on hwy 395 3.4 road mi n Wendel road (from Susanville to Alturas, s side of mt., w of hwy); Shaffer Mt. 1386 Comment
  UC708799  Phacelia adenophora Vesta Holt 1946-6-20 4 Lassen Grasshopper Valley Comment
  RSA487940  Phacelia adenophora Arnold Tiehm, Jan Nachlinger, Margaret J. Williams 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 miles north of the Wendel road on Hwy 395 from Susanville to Alturas, west of the highway. 1387 Comment
  JEPS1461  Phacelia bicolor var. bicolor J. W. Blankinship 1911-5-27 Lassen Red Rock Comment
  UC1069270  Phacelia bicolor var. bicolor E. Sawyer 1935-6-27 233 Lassen Long Valley Sierraville Quadrangle Comment
  UC1523735  Phacelia hastata Gary Schoolcraft 1981-6-15 462 Lassen Ash Valley 1584 Comment
  RSA0093392  Phacelia hastata var. hastata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31421 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
  SBBG64963  Phacelia heterophylla E. Rockwell -Jun-1925 404 Lassen Eagle Lake 1554 Comment
  CHSC23597  Phacelia heterophylla subsp. virgata W. O. Baum 1971-7-1 71 -24 Lassen S. slope of Gallatin Peak. 2011 Comment
  UC107564  Phacelia heterophylla subsp. virgata T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC773946  Phacelia heterophylla subsp. virgata L. R. Short 1936-6-30 S- 463 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1816 Comment
  CHSC63401  Phacelia humilis Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6314 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  HSC30186  Phacelia humilis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19265 Lassen Harvey Valley near Cone Springs Comment
  SBBG64984  Phacelia humilis E. Rockwell -Jun-1925 393 Lassen Eagle Lake 1554 Comment
  UC1259992  Phacelia humilis Jeffrey Huber 1971-6-2 111 Lassen on CA Hwy 139 approx. 30 mi n Susanville 1645 Comment
  UC24376  Phacelia humilis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  RSA128301  Phacelia humilis var. humilis Peter H. Raven, Otto T. Solbrig 1958-6-16 13246 Lassen Four and a half miles east of Westwood on State Highway 36. Comment
  RSA427992  Phacelia humilis var. humilis Rockwell 1925-7-1 s.n. Lassen Eagle Lake 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
  CHSC5263  Phacelia imbricata 1944-7-6 Lassen Eagle Lake. Harvey Valley. 1694 Comment
  NY998462  Phacelia linearis N. H. Holmgren 1980-7-4 9501 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 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
  SEINET5519037  Phacelia linearis J. Young 1982-6-9 s.n. Lassen Adin, M. Meyer's Ranch 1372 Comment
  RSA128305  Phacelia lutea Peter H. Raven, Otto T. Solbrig 1958-6-17 13281 Lassen Along US Highway 395, 5.7 miles south of Ravendale. Comment
  NY1056438  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale 1341 Comment
  SEINET5518985  Phacelia lutea var. lutea M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 86- 21 -1 Lassen Smoke Creek Road, east of HWY 395 1448 Comment
  HSC13645  Phacelia mutabilis M. T. Milligan 1964-7-16 134 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  JEPS4041  Phacelia mutabilis Frances D. Payne 1929-7-12 85 Lassen ridge above Lost Lake; Warner Mountains 2438 Comment
  UC506976  Phacelia mutabilis George A. Fischer, Irwin H. Johnson 1933-7-12 F 226 Lassen Lassen <National> Forest 1722 Comment
  UC1609295  Phacelia ramosissima var. eremophila Vernon H. Oswald and Lowell Ahart 1993-6-14 5540 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ne of Spaulding Tract Rd (Rd 518, 33N89), dunes on n side of road); Eagle Lake 1566 Comment
  JEPS79143  Phacelia thermalis L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  JEPS88429  Phalaris arundinacea Vernon H. Oswald and Lowell Ahart 1996-8-1 8108 Lassen receding shore of the Mountain Meadows Reservoir ne of Indian Ole Dam Mountain Meadows Reservoir (sw of Westwood); , ne of Indian Ole Dam 1539 Comment
  CHSC68898  Phlox diffusa Vernon Oswald; Lowell Ahart 1997-6-24 8638 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen flat and Red Rock Lookout. 2249 Comment
  POM64961  Phlox diffusa subsp. diffusa Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  UC1137650  Phlox douglasii subsp. rigida A. Simontacchi 1940-5-17 744 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1537492  Phlox douglasii subsp. rigida Gordon H. True Jr. 1936-6-27 560 Lassen Top of Hot Spring Mountain Hot Spring Mountain 1828 Comment
  CAS-BOT-BC294732  Phlox speciosa James Vale 1981-5-24 s.n. Lassen Eagle Lake Comment
  JEPS69990  Phlox speciosa subsp. occidentalis Leland S. Smith 1918-5-12 922 Lassen Hayden Hill, s end of Modoc National Forest Modoc National Forest Comment
  UC52648  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  RSA104310  Phlox speciosa subsp. occidentalis Verne Grant, Alva Grant 1956-5-17 9797 Lassen Just north of Milford on Highway 395 1311 Comment
  UC106965  Phlox stansburyi T. S. Brandegee 1892-6-22 Lassen Honey lake Comment
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  UC932052  Phlox stansburyi Verne Grant and Alva Grant 1947-5-5 7979 Lassen n of Honey Lake Valley Comment
  RSA303543  Phoenicaulis cheiranthoides J. R. Shevock 1971-4-9 945 Lassen Hwy 299, E of Dana. 1159 Comment
  UC72905  Phoenicaulis cheiranthoides Milo S. Baker 1890-1 Lassen Milford Comment
  UC1100404  Phragmites australis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1489 Lassen 1 mi s Doyle; Long Creek Comment
  PASA1593  Phyllodoce breweri Margaret Stason 1932-6-23 Lassen near mineral Comment
  RSA772875  Pilularia americana R. F. Thorne, Larry E. DeBuhr 1975-8-22 47209 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  UC1609393  Pilularia americana Vernon H. Oswald and Lowell Ahart 1993-7-8 5648 Lassen near se end Poison Lake (Pittville Rd.(Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi n of Hwy. 44) 1709 Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  SEINET11604048  Pinus jeffreyi D. A. Charlet 2013-2-15 3725 Lassen At gate to mine in Upper long Valley, west of US highway 395, Fairly large stand 1430 Comment
  SEINET5323926  Pinus washoensis D. Charlet 1994-7-6 1924 Lassen Madelin Mesa foothills above Madelin Plains. 1689 Comment
  CDA42913  Plagiobothrys cusickii L. 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. Comment
  JEPS107810  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-2 11954 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  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
  SBBG125478  Plagiobothrys cusickii L. Ahart 2012-7-9 18284 Lassen ca. 100 yards SE of tall poles, Ash Crk State Wildlife Area, ca. 5.5 mi NE of Bieber, Big Valley 1267 Comment
  JEPS87509  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1993-6-14 5510 Lassen ca 3 mi (air) w. Eagle Lake (junction of Lassen A1 (Eagle Creek Rd.) with Lassen A21 (32N02)) 1813 Comment
  UC773949  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1743 Comment
  CAS-BOT-BC224970  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  SD43490  Plagiobothrys hispidulus Philip A. Munz 1947-5-20 11891 Lassen Silty drying roadside pool, Milford. 1264 Comment
  JEPS87508  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  SJSU8065  Plagiobothrys hispidus J. W. Tilden 1960-6-27 1495 Lassen Westwood 1524 Comment
  UC1609214  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  UC1618198  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy. 44 ca. 1 mi. e. Shasta Co. line (s. of hwy.) 1645 Comment
  CHSC64768  Plagiobothrys leptocladus Vernon H. Oswald 1995-5-24 6780 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad. 1219 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
  UC1533150  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen w Ash Valley (along edge of Moll Reservoir); edge Moll Reservoir 1606 Comment
  RSA495517  Plagiobothrys mollis Elaine Joyal, D. Mehlman 1988-6-27 1286 Lassen Poison Lake. 2000 Comment
  JEPS124380  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2015-7-13 20306 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS88405  Plagiobothrys mollis var. mollis Vernon H. Oswald and Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir s.w. of Westwood (receding shore of the reservoir n.e. of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  RSA337274  Plagiobothrys scouleri Noel Holmgren, Patricia K. Holmgren 1980-7-3 9476 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 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
  CDA14311  Plagiobothrys tenellus W. Ogden 1998-6-25 s.n. Lassen Allen Farms Rd., near Doyle. 0 Comment
  CHSC12462  Platanthera leucostachys Robert W. Severin 1969-6-26 21 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach. 3 mi. s of E. L. B. S. 1645 Comment
  CHSC6278  Platanthera leucostachys M. West 1946-7-7 Lassen Butte Creek. Comment
  CHSC96724  Platanthera leucostachys Gordon Leppig 1998-7-12 941 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  UC845587  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen about 1 mi e Westwood 1524 Comment
  UC890150  Plectritis brachystemon C. L. Hitchcock 6604 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 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
  CHSC99738  Plectritis macrocera Lowell Ahart; John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC100821  Plectritis macrocera unknown 1890-1 Lassen Milford Comment
  UC1553411  Plectritis macrocera G. Schoolcraft 1987-5-19 1702 Lassen 16 mi e of Adin (Ash Valley (RNA/ACEC)); Ash Valley 1554 Comment
  CAS-BOT-BC326710  Pleiacanthus spinosus John Thomas Howell 1961-9-25 36971 Lassen East side of Beckwourth Pass, Sierra Nevada 1554 Comment
  CAS-BOT-BC261046  Poa Clarence R. Quick 1961-6-21 61 -30 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  SEINET10565425  Poa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17785 Lassen 6 mi N of Hallelujah Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC255679  Poa bolanderi Clare B. Hardham 1971-8-22 18912 Lassen Diamond Mountain 2133 Comment
  CHSC58052  Poa bulbosa Vernon H. Oswald 1992-5-18 4942 Lassen Lassen Volcanic National Park. Butte Lake Campground. Woods bordering the service road near the boat launching area. 1847 Comment
  UC1924231  Poa bulbosa Debra Valov 2004-6-9 2004261 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD90699  Poa bulbosa S. Galen Smith; Malcolm A. Nobs, Herbert L. Mason 1949-5-29 758 Lassen on Great Northern Railroad, Highway 299, Nubeiber. Comment
  SEINET7744866  Poa bulbosa H. Durio 1979-5-23 s.n. Lassen Meyers Ranch, Adin. Comment
  JEPS117621  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
  UC1024877  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (Ash Creek) Comment
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  UC589933  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (bank of Ash Creek) Comment
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  RSA129249  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadows 1524 Comment
  UCD91789  Poa palustris A. A. Beetle 1941-6-28 2798 Lassen 10 miles west of Chester. 1524 Comment
  CAS-BOT-BC247320  Poa pratensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 -A Lassen 13.5 mi. E. of Susanville Comment
  SEINET7850259  Poa pratensis B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11508 Lassen Blue Door Flat, 7 or 8 mi. E of Highway 295, on county road 510. 1774 Comment
  UC2046021  Poa pratensis Barbara L. Wilson with Danna Lytjen and Nick Otting 2005-7-29 11508 Lassen Blue Door Flat, seven or eight miles east of Highway 295 on county road 510. Comment
  JEPS114849  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2008-6-22 15020 Lassen On the road sides of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  UC1037135  Poa pratensis subsp. pratensis Leo Whitney 1935-5-27 3126 Lassen Bieber Comment
  UC1142958  Poa pratensis subsp. pratensis A. L. Hormay 1941-6-25 31 Lassen Westwood Junction; Lassen Nat'l Forest 1737 Comment
  JEPS126492  Poa secunda Jennifer Mueller, A. Brambila July 6-15, 2016 CA 370 -227 Lassen Head south through Eagleville, CA to Bare Ranch. Comment
  JEPS126499  Poa secunda Jennifer Mueller, A. Brambila July 6-15, 2016 CA 370 -228 Lassen Head south through Eagleville, CA to Bare Ranch. Comment
  UCD90322  Poa secunda A. A. Beetle; G. L. Stebbins Jr. 1942-5-30 3365 Lassen Nubieber. Comment
  CAS-BOT-BC236255  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5447 Lassen 2 miles E of Westwood, in meadow leading down to Mountain Meadows Reservoir 1524 Comment
  CHSC100869  Poa secunda subsp. juncifolia L. P. Janeway 2008-8-2 9529 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  CHSC115514  Poa secunda subsp. juncifolia Lowell Ahart; John Dittes 2015-7-14 20331 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UC1037128  Poa secunda subsp. juncifolia Leo Whitney 1935-6-19 3259 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1776716  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2348 Lassen About 1.5 miles NE of Red Rock Lake 2042 Comment
  UC718010  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada 1341 Comment
  UC718011  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5447 Lassen 2 mi w Westwood (meadow leading to Mountain Meadows Reservoir); Sierra Nevada 1524 Comment
  UCD92385  Poa secunda subsp. juncifolia William Martin 1963-7-18 s.n. Lassen 3-4 miles S of Doyle. Long Valley Creek, Rowland Ranch. Comment
  UCD92393  Poa secunda subsp. juncifolia C. C. Rowland 1944-7-11 s.n. Lassen Doyle. Comment
  SEINET7855100  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen R.R. station, Constantia Comment
  HSC22383  Poa secunda subsp. secunda D. E. Anderson 1969-7-5 4997 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  HSC79825  Poa secunda subsp. secunda William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UCD90487  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  HSC68792  Poa wheeleri Gary Schoolcraft 1979-7-3 112 Lassen 4.3 mi. up Observational Lookout Rd. from Horne Ranch Rd. 2134 Comment
  CAS-BOT-BC254381  Poaceae John Thomas Howell 1974-7-10 50518 Lassen Janesville, at the cemetary 1295 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
  JEPS120846  Polemonium micranthum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18743 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
  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
  POM74373  Polemonium occidentale Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  SEINET3562962 Image available Polyctenium fremontii Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, mud flats along the highway. 1347 Comment
  CAS-BOT-BC74163  Polyctenium fremontii G. Schoolcraft 1998-5-19 2707 Lassen South end Mud Flat. 1341 Comment
  SEINET3197107 Image available Polyctenium fremontii var. confertum Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1610 Comment
  JEPS94355  Polyctenium fremontii var. fremontii Vernon H. Oswald and Lowell Ahart 1997-5-7 8405 Lassen 1.7 ni e of Highway 395 (Mud Flat along Smoke Creek Ranch Road); Mud Flat, Smoke Creek Ranch Road 1356 Comment
  RSA0004886  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  UC1536795  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-8-5 1041 Lassen near Madeline; Tule Reservoir Comment
  NY404581  Polygonum amphibium var. emersum G. H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch, Honey Lake Valley Comment
  CAS-BOT-BC419766  Polygonum argyrocoleon Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pittville 1219 Comment
  CAS-BOT-BC419770  Polygonum argyrocoleon Luella Bass 1976-9-1 s.n. Lassen Willard Creek w. of Susanville Comment
  CHSC99299  Polygonum aviculare Lowell Ahart; John Dittes 2008-6-20 14931 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
  SBBG61490  Polygonum californicum E. Rockwell -Jun-1925 884 Lassen Eagle Lake 1554 Comment
  CDA22783  Polygonum davisiae C. Siebe 1971-6-19 Lassen Near cattle corrals at southwest end of Westwood. 0 Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC106091  Polygonum douglasii subsp. douglasii Lowell Ahart; John Dittes 2010-7-31 16978 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC60762  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  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
  RSA768026  Polygonum douglasii subsp. spergulariiforme L. Ahart, John Dittes 2010-7-31 16979 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  UC1143031  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experimental Range Lassen National Forest 1767 Comment
  RSA122844  Polygonum kelloggii L. R. Short, Wm. Gansberg 1936-6-8 s 390 Lassen Burgess Spring, Exp Range. 1744 Comment
  UC1603213  Polygonum polygaloides J. Guardino 1993-5-22 167 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  JEPS83273  Polygonum polygaloides subsp. confertiflorum J. D. Jokerst 1983-7-24 1883 Lassen Madeline Plains nw of Ravendale; Madeline Plains 1584 Comment
  UC1137591  Polygonum polygaloides subsp. confertiflorum A. Simontacchi 1940-6-15 875 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC773864  Polygonum polygaloides subsp. kelloggii L. R. Short and Wm. Gansberg 1936-6-8 S- 390 Lassen Burgess Spring Experimental Range Lassen <National> Forest 1743 Comment
  UCD100647  Polygonum ramosissimum Verne Grant; Irving Schneider 1947-8-1 8227 Lassen Southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1136922  Polygonum sawatchense subsp. sawatchense George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 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
  UC1037194  Polygonum shastense Leo Whitney 1934-9-16 1512 Lassen Lassen Peak; s side 2560 Comment
  UCR7792  Polypogon monspeliensis Marilyn Malin 1968-7-11 259 Lassen West side of Hwy 395 on west side of Honey Lake 1280 Comment
  CHSC13649  Porterella carnosula M. S. Taylor 1974-7-13 308 Lassen Abundant along edge of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi ne of Susanville. 1524 Comment
  CHSC27641  Porterella carnosula George Deniso 1978-7-21 94 Lassen S end of Mohogany L., S of Eagle L. 2060 Comment
  JEPS7408  Porterella carnosula Leo Whitney 1933-8-21 Lassen 25 mi wnw Eagle Lake (near Hall's Flat); Lassen National Forest, wnw of Eagle Lake Comment
  SEINET3795836 Image available Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9461 Lassen Madeline plains, along US hwy 395, 5.6 km (3.5 mi) S of Madeline 1615 Comment
  CHSC118487  Porterella carnosula Don Lepley 2015-5-29 Lassen Lassen National Forest. Eagle Lake Ranger District. Southeast corner of Pine Creek Valley, about seven air miles east of Bogard Rest Area. 1716 Comment
  JEPS108444  Porterella carnosula Lisa Schultheis 1995-6-27 229 -95 Lassen W side of Rt. 395, 3.5 mi S of Madeline. Comment
  SEINET10460817  Porterella carnosula Whitney 1933-8-21 WHITNEY s.n. Lassen In a water-hole near Hall's Flat, 25 miles W. NW. of Eagle Lake, Lassen National Forest Comment
  SEINET10460820  Porterella carnosula Taylor 1988-6-6 Taylor 9007 Lassen Road from Bieber to Lookout, 0.5 miles south of the Modoc County Line 1250 Comment
  SEINET10460825  Porterella carnosula Secrest 1951-6-23 SECREST s.n. Lassen Comment
  SEINET10460844  Porterella carnosula Baker 1894-7-21 Baker s.n. Lassen Near Eagle Lake. 1524 Comment
  SEINET12326931  Porterella carnosula Unknown 1978-1 15 Lassen E shore Mahogany L., S of Eagle L., T31N;R11E, sec. 21 2060 Comment
  CHSC7716  Portulaca oleracea Beverley J. Wise 1969-6-3 6 Lassen Susanville, 833 Mark St. 1310 Comment
  HSC93507  Potamogeton amplifolius Gordon Leppig 1998-8-18 1064 Lassen Modoc Nat'l Forest, Blue Lake, S of campground 1860 Comment
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  HSC95292  Potamogeton foliosus Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 692 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1100074  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8244 Lassen e end of Tule Lake Comment
  RSA233761  Potamogeton richardsonii Robert F. Thorne, C. W. Tilforth 1969-9-5 39140 Lassen Said Valley Reservoir. Comment
  NY831702  Potentilla biennis V. E. Grant 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  SD215713  Potentilla biennis D. F. Howe 1964-7-31 Lassen Parsnip Creek, Warner Mountains, Modoc National Forest 1829 Comment
  CAS-BOT-BC143111  Potentilla breweri M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CHSC60395  Potentilla flabellifolia Mary Ann Showers 1992-6-13 2553 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC60849  Potentilla glandulosa subsp. ashlandica Vernon H. Oswald; Lowell Ahart 1993-6-28 5613 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. On the edge of vernal pool. 1798 Comment
  POM34025  Potentilla glandulosa subsp. ashlandica Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  POM366534  Potentilla glandulosa subsp. ashlandica Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC89722  Potentilla glandulosa subsp. 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
  CAS-BOT-BC540366  Potentilla gracilis var. fastigiata B. Bartholomew; B. Anderson 1988-6-25 4373 Lassen Warner Mountains 2080 Comment
  CAS-BOT-BC158477  Potentilla gracilis var. gracilis Alice Eastwood; John Thomas Howell 1940-6-11 7997 Lassen Bieber Comment
  CHSC106567  Prunus andersonii K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  JEPS94135  Prunus andersonii Vernon H. Oswald and Lowell Ahart 1998-5-22 9119 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 1.1 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1447 Comment
  RSA60357  Prunus andersonii E. K. Balls 1950-5-9 15947 Lassen 6 miles south of Doyle, Hwy 395. 1372 Comment
  SEINET10542398  Prunus andersonii Paul Gallian, David B. Dunn 1971-6-2 Gallian 461 Lassen 6 miles n of hallelujah junction on us hwy 395, in artemisa tridentata, pinyon Pine, jeffrey pine along high ridge and in sandy wash 1402 Comment
  CHSC23523  Prunus emarginata Wayne O. Baum 1971-7-7 71 -83 Lassen N. slope of Gallatin Peak. 2011 Comment
  UCD35732  Prunus emarginata Beecher Crampton 1960-6-18 5725 Lassen southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD113460  Prunus fasciculata T. I. Storer 1932-7-18 s.n. Lassen 4.5 miles northwest of Doyle. 1310 Comment
  CHSC6286  Prunus virginiana var. demissa R. Clicquennoi 1967-7-1 22 Lassen 4 mi s of Eagle Lake Biological Station, on Gallatin Beach Rd. 1554 Comment
  CAS-BOT-BC239802  Pseudoroegneria spicata John Thomas Howell 1976-7-20 52002 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD55293  Pseudoroegneria spicata Ellen Dean; Gary Schoolcraft 2006-5-16 3114 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
  UCD91491  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3018 Lassen On east side of Horse Lake. Comment
  UC1483808  Pseudoroegneria spicata subsp. spicata P. Bousier May 1979 Lassen n of Wendel (ner Brubeck Spring) 1554 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
  SEINET10801640  Psilocarphus brevissimus Katherine L. Morris, David B. Dunn; Douglas G. LeDoux 1973-5-25 Morris 249 Lassen 27.7 mi. NW of the junction of Hwy. 36 & 44 on Hwy. 44, at Robber's Spring, in an open meadow on one side of the highway with yellow pine, white fir and open on the other side. Comment
  CHSC110907  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes 2012-7-9 18290 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  CHSC60878  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1993-7-8 5671 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  CHSC75463  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1999-6-9 9752 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  CHSC60879  Psilocarphus oregonus Vernon H. Oswald; Lowell Ahart 1993-7-8 5672 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  UC1562803  Pterospora andromedea Barbara Ertter 1987-7-25 7319 Lassen Hwy 44 ca 1 mi E of Shasta Co. line 1645 Comment
  UC773902  Pterospora andromedea L. R. Short and D. Gish 1936-7-15 S 488 Lassen Burgess Spring Experiment Range 1813 Comment
  SEINET3823221 Image available Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles east of Westwood in leaf mold. Transition Life Zone 1524 Comment
  CHSC77267  Puccinellia distans G. Schoolcraft 1993-6-1 2270 Lassen Coyote Spring. 1463 Comment
  JEPS103194  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  SEINET4890229  Puccinellia lemmonii J. Davy 1897-1 s.n. Lassen Honey Lake Valley 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
  UCD113288  Purshia tridentata G. L. Webster 1989-5-13 7715 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  SEINET3394464  Purshia tridentata E. D. McArthur 1982-1 EDM- 1356 Lassen NW of Janesville at Jct of crossroads 205 & 219 Comment
  CAS-BOT-BC147818  Purshia tridentata var. tridentata Clarence Quick 1963-7-12 63 -31 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  HSC19580  Purshia tridentata var. tridentata Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  HSC19581  Purshia tridentata var. tridentata L. H. Myers 1963-4-5 29 Lassen W of Hwy. 395 near Janesville 1280 Comment
  UC1128540  Purshia tridentata var. tridentata C. W. Hanks 1934-9-26 91 Lassen w side Long Valley (near Plumas National Forest); Sierraville Quad. 1432 Comment
  UC1128550  Purshia tridentata var. tridentata K. Bradshaw 1939-5-27 234 Lassen Black Mountain Experimental Forest; Lassen National Forest, Halls Flat Quad. 1752 Comment
  CAS-BOT-BC462756  Pyrola dentata Clare B. Hardham 1969-8-28 17446 Lassen Sierra Nevada: west of Janesville. Comment
  UCD18973  Pyrola picta Raymond D. Ratliff 1965-7-29 35 Lassen Lassen National Forest, Harvey Valley and Champ's Flat Allotments (HV 19-13, CF 19-6). 1706 Comment
  UC1609363  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald and Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd (Lassen 111, 36N01) 3.0 mi n Hwy 44 (ne of Poison Lake) 1709 Comment
  POM39972  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET13710357  Pyrrocoma lanceolata Lowell William Ahart, Lowell William Ahart 1999-1 8231 Lassen Willow Creek Wildlife Area, Hwy. 139, 4800 Ft (T31N, R12E, sec 4, SW 1/4) 1463 Comment
  RSA715949  Pyrrocoma lucida L. P. Janeway 2005-7-31 8512 Lassen Northern High Sierra Nevada. Diamond Mountains; Head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  CAS-BOT-BC362320  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee, Honey Lake Valley Comment
  RSA715982  Quercus kelloggii L. Ahart, John Dittes 2005-6-2 11942 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
  UC1192295  Quercus kelloggii Verne Grant and Irving Schneider 1947-9-7 8400 Lassen several mi s Janesville (along Highway 395, w of Honey Lake, and along e foot of Sierras) Comment
  UCD46633  Quercus kelloggii John Thomas Howell; Gordon H. True 1973-5-12 49159 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UCSB12079  Quercus kelloggii Muller, Cornelius 1956-6-17 Lassen 6 1/2 mi. NW of Milford, 34 mi. SE of Buntingville along W shore of Honey Lake Comment
  UC1608998  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy 44 (between Poison Lake and Susanville) 1749 Comment
  HSC95453  Ranunculus aquatilis Gordon Leppig, Tony LaBanca 1997-6-29 539 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC36348  Ranunculus aquatilis var. capillaceus M. S. Taylor 1982-6-12 4647 Lassen In pond s side of Hwy 36, n side of West Fork Susan River, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  JEPS88527  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1996-6-24 7877 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  UC1101365  Ranunculus aquatilis var. capillaceus Verne Grant and Irving Schneider 1947-7-30 8197 Lassen Tule Lake; w end Comment
  SEINET10899319  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1982-6-12 Taylor 4648 Lassen T29N R10E ne/nw sec 13. Westwood quad. Aquatic in still pond on n side of West Fork of Susan River, s side of Hwy 36 at jct w/ Willow Cr Rd, 8 mi w Susanville. Comment
  CHSC5020  Ranunculus californicus L. G. Bennett 1967-6-24 44 Lassen North end of Murrers Meadow, near Eagle Lake. 1493 Comment
  CDA24319  Ranunculus cymbalaria var. saximontanus T. C. Fuller 1980-8-6 20317 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  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
  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
  CHSC60612  Ranunculus flammula var. ovalis Mary Ann Showers 1992-6-13 2549 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC84874  Ranunculus flammula var. ovalis Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 352 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
  UC1136880  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spr. Exp. Range Lassen National Forest 1737 Comment
  UC773872  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spring Experiment Range Lassen National Forest 1737 Comment
  UC1951076  Ranunculus glaberrimus var. glaberrimus Debra Valov 2009-4-25 2009015 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC1136881  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  UC1137287  Ranunculus occidentalis K. E. Bradshaw 1939-5-27 242 Lassen near S. end of Black Mountain Experimental Forest Plot 39-4; Lassen National Forest, Halls Flat Quadrangle 1737 Comment
  UC118184  Ranunculus occidentalis T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  UC506988  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  SEINET5338821  Ranunculus occidentalis var. dissectus J. Young 1978-4-3 s.n. Lassen Meyers Ranch, Adin, Calif. Comment
  CDA24358  Ranunculus testiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 C Lassen Wendel. 0 Comment
  CHSC63415  Ranunculus testiculatus Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6316 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. At a watering trough. 1871 Comment
  JEPS28453  Ranunculus uncinatus George W. Gillett 1957-7-28 926 Lassen on trail to Widow Lake 100 yd above junction with Snag Lake Trail; Lassen Volcanic National Park, Butte Lake 1859 Comment
  UC870780  Rhamnus californica C. L. Hitchcock 1940-5-26 6619 Lassen ca 12 mi n Fall River Mills; Fall River 1371 Comment
  CAS-BOT-BC58196  Rhododendron columbianum Brighton C. Cain 1925-8-24 101 Lassen Mt. Lassen Vilcanic National Park, 1 mi. below Drakesbad. 1645 Comment
  UC79702  Ribes aureum Walter E. Bryant Lassen Comment
  CAS-BOT-BC92389  Ribes aureum var. aureum Doris K. Kildale 1930-5-12 9358 Lassen Between Susanville and Leavitt Lake. Comment
  CHSC21360  Ribes cereum M. S. Taylor 1974-5-4 219 Lassen Scattered ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  UC465786  Ribes cereum Franklin P. Nutting 1894-7-5 Lassen Dixie Valley Comment
  RSA0037147  Ribes cereum J. R. Keck Jr. 1977-7-13 s.n. Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. 1830 Comment
  JEPS87426 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1993-6-3 54887 Lassen just s of ford over Pine Creek (Champs Flat Rd (Lassen 105, Forest 32N28Y), 7.0 mi n of tis junction w Lassen 21 (32N02) to Eagle Lake, between Poison Lake and Susanville); Champs Flat Rd, Lassen 105, Forest 32N28Y 1688 Comment
  UC699688  Ribes hudsonianum var. petiolare J. L. Mielke, J. W. Kimmey 1941-6-29 Lassen Silver Creek (Lost Lake) Warner Mountains, Modoc National Forest Comment
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Jul 19 2010
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  SEINET5339729  Ribes nevadense C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  RSA0022881  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  SEINET10482949  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 285 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET10482953  Ribes roezlii Mary Susan Taylor 1974-5-4 Taylor 229 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
  CAS-BOT-BC186151  Ribes roezlii var. roezlii Brighton C. Cain 1925-8-24 96 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  SEINET10482959  Ribes velutinum Mary Susan Taylor 1974-1 Taylor 288 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET10799165  Rigiopappus leptocladus Arnold J. Tiehm, Margaret J. Williams; Jan Nachlinger 1988-6-2 Tiehm 11700 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on Highway 395 from Susanvile to Alturas, west of the highway. 1387 Comment
  CAS-BOT-BC74530  Rorippa curvisiliqua John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mountains. 2438 Comment
  JEPS95976  Rorippa curvisiliqua Vernon H. Oswald and L. Ahart 1999-6-9 9758 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass: T29N R10E NW1/4 Sect. 22, 5400 ft elevation, mixed coniferous forest 1645 Comment
  UC10716  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-6-1 Lassen Dixey Mts. Comment
  UCD107036  Rorippa curvisiliqua Tim Kuhn 2006-7-18 11 Lassen Eagle Lake Ranger District. Comment
  UCR163272  Rorippa curvisiliqua Jim Andre 1993-6-29 1411 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  CHSC101064  Rorippa curvisiliqua var. orientalis John Dittes 2008-5-22 1527 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek. 482 Comment
  CHSC117291  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2016-7-13 21115 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC71385  Rorippa curvisiliqua var. orientalis V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9260 Lassen Moll Reservoir in Ash Valley southeast of Adin. Along the edge of the reservoir. 1615 Comment
  CHSC99504  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2008-6-20 14937 Lassen On the edge of Big Valley Canal and in vernal pools, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC117284  Rorippa palustris var. fernaldiana Lowell Ahart; John Dittes 2016-7-15 21218 Lassen Along a ditch west of the road, about 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1191531  Rorippa sinuata Verne Grant and Irving Schneider 1947-8-1 8226 Lassen irrigation ditch running s.w. into State Fish & Game nesting area on s.w. end of Section 19 Madeline Plain Comment
  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
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC68870  Rubus parviflorus Vernon Oswald; Lowell Ahart 1997-6-24 8614 Lassen South of Susanville on the north side of Diamond Mtn. along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SEINET10479396  Rumex acetosella Paul Gallian, David B. Dunn 1971-6-2 Gallian 482 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus-Jeffrey Pine on mountain range to W at approximately the same altitude. 1250 Comment
  SEINET4199964  Rumex crispus M. J. Williams 1974-7-29 74 -L-64 Lassen 2 mi. West of Hallelujah Junction, south of Hwy. 70 Comment
  CHSC1357  Rumex hymenosepalus M. Anthony 1954-5-1 Lassen Hwy 395 between Susanville and Hallelujah Jct. Comment
  CAS-BOT-BC433632  Rumex lacustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13266 Lassen Along United States Highway 395, 11.8 miles north-east of Litchfield Comment
  UC1594642  Rumex occidentalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5122 Lassen 1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on logging road paralleling the e side Bridge Creek); Bridge Creek 1719 Comment
  UC1136917  Rumex paucifolius L. R. Short and B. Gish 1936-6-8 S- 387 Lassen Burgess Spr. Exp. Range Lassen Forest 1743 Comment
  UC1036083  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5152 Lassen 4 to 6 mi s Madeline Comment
  UC1101216  Rumex salicifolius var. lacustris Verne Grant and Irving Schneider 1947-7-30 8188 Lassen s point of w embayment Tule Lake Comment
  UC1136137  Rumex salicifolius var. lacustris E. Sawyer 1935-6-27 228 Lassen Long Valley Sierraville Quad. 1310 Comment
  UC6962  Rumex salicifolius var. salicifolius M. S. Baker and F. Nutting 1894-7-1 Lassen Dixie Mts. Comment
  CHSC58852  Rumex salicifolius var. triangulivalvis Vernon H. Oswald; Lowell Ahart 1992-7-16 5123 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. Common on drier parts of a marshy meadow. 1719 Comment
  CHSC111165  Rumex triangulivalvis Lowell Ahart; John Dittes 2012-7-9 18302 Lassen about 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-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
  UCD101653  Rumex venosus Rimo Bacigalupi; L. R. Heckard 1962-5-28 8494 Lassen Along U.S. Highway 395, 10 miles south of Milford. 1219 Comment
  UCD150405  Rumex venosus William Anderson 1963-6-2 s.n. Lassen Honey Lake Refuge. Comment
  SEINET4176402  Rumex venosus N. J. Hartke 1953-5-18 29 Lassen 2 miles north of Halleluja, Calif. Comment
  CHSC13691  Sagittaria cuneata Patrick Balch 1935-7-17 Lassen Willow Creek Springs. Comment
  CHSC27591  Sagittaria cuneata J. D. Prouty 1978-7-23 24 Lassen Upper Murrers Meadow, SE of Eagle L. 1545 Comment
  UC1609489  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
  UCD138009  Sagittaria cuneata Calvin McMillan; Malcom A. Nobs 1949-6-17 799 Lassen Grass Lake, Highway 97. Comment
  POM362636  Salix bonplandiana Christopher Davidson 1975-6-6 2725 Lassen Ca 3.5 miles on road to Thompson Peak. Branching E of rd 204 ca 7.5 miles SW of Susanville. (Rd 204 follows Gold Run Cr.) 1677 Comment
  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
  CHSC66403  Salix exigua Vernon H. Oswald; Lowell Ahart 1996-6-17 7784 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. 1432 Comment
  SEINET10682433  Salix exigua Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 137 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CHSC58515  Salix jepsonii Vernon Oswald 1992-7-3 5056 Lassen Grassy Creek between Horseshoe and Snag lakes, ca. 0.3 mi NE of the trail to Cameron Meadow. Lassen Volcanic Park. 1950 Comment
  RSA716142  Salix jepsonii L. Ahart, John Dittes 2005-6-2 11947 Lassen About 1.5 miles NE of the Anderson Ranch home. Long Valley. About 6 (air) miles N of the intersection of Scott Road and Hwy 70. 7.5 (air) miles NW of Hallelujah Jct. 1602 Comment
  HSC26528  Salix lasiandra J. P. Smith, J. O. Sawyer 1972-5-6 5239 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  CAS-BOT-BC128174  Salix lasiandra var. lasiandra Mrs. E. C. Sutliffe 1927-6-1 s.n. Lassen Drakesbad - Lassen Volcanic park Comment
  CAS-BOT-BC106963  Salix lasiolepis G. Schoolcraft 1999-5-7 2819 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  RSA0045640  Salix lasiolepis var. lasiolepis Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4, miles (air) northeast of Bieber. 1257 Comment
  CAS-BOT-BC124637  Salix lemmonii M. B. Kildale 1926-9-11 2788 Lassen Susanville 1524 Comment
  POM209555  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 684 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  CHSC93562  Salix lucida subsp. lasiandra Lowell Ahart; John Dittes 2005-6-2 11925 Lassen Long Valley, along a small ditch, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CAS-BOT-BC129525  Salix melanopsis G. Schoolcraft 1999-7-6 2853 Lassen Along Susan River near Devil's Corral Trailhead 1402 Comment
  JEPS78095  Salsola tragus Gary W. Zamzow 1972-7-18 84 Lassen beside Highway 395, 3 mi n Hallelujah Junction; n of Hallelujah Junction 1371 Comment
  UC1191402  Salsola tragus Verne Grant and Irving Schneider 1947-7-19 8080 Lassen s. of Alutras (in Pit Valley, Williams Ranch, along Southern Pacific right-of-way); Pit Valley, Williams Ranch Comment
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Jun 24 2009
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  JEPS62690  Salvia dorrii var. incana Duncan Dunning 1923-6-6 Lassen rocks below Ravendale Comment
  CAS-BOT-BC238592  Sambucus nigra subsp. caerulea John Thomas Howell 1974-7-10 50548 Lassen Elysian Valley 1325 Comment
  CHSC68855  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1997-6-24 8609 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundry. 1889 Comment
  JEPS51512  Saponaria officinalis W. L. Jepson 1918-8-15 7994 Lassen Pass e South Fork Peak (not many mi from Madeline); Pass e of South Fork Peak 1706 Comment
  HSC4526  Sarcobatus vermiculatus Fred J. Kindel 1955-7-14 Lassen Wendel, Hot Springs Comment
  RSA79261  Sarcobatus vermiculatus E. K. Balls 1952-10-10 18136 Lassen 5.2 miles W of Standish, Hwy 395, Susanville to Alturas. 1250 Comment
  UCD54536  Sarcobatus vermiculatus Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2721 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CHSC6239  Sarcodes sanguinea Sam Webb 1946-6-8 Lassen Roop Mountain, Eagle Lake. 2133 Comment
  UC70391  Sarcodes sanguinea Milo S. Baker 1890-4 Lassen Honey Lake Valley Comment
  JEPS28664  Saxifraga odontoloma George W. Gillett 1957-7-22 6070 Lassen near campsite at s end of Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 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
  SEINET10333128  Schoenoplectus acutus var. occidentalis R. R. Halse 2012-8-20 8661 Lassen Along State Hwy. 139 at Eagle Lake, ca. 26.6 miles north of Susanville 1558 Comment
  CAS-BOT-BC111303  Schoenoplectus acutus var. occidentalis John Thomas Howell 1975-7-23 51406 Lassen Wet grounds along Hwy. 395 between Johnstonville and Jonesville Comment
  POM111523  Schoenoplectus fluviatilis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS78082  Scirpus acutus var. occidentalis Gary W. Zamzow 1972-7-18 88 Lassen beside Highway 395 16.8 mi s of the intersection with Highway 36; beside Highway 395 1280 Comment
  UC573269  Scirpus pungens H. S. Yates 1936-8-11 6062 Lassen near Red Rock 1341 Comment
  CDA39106  Scirpus pungens T. C. Fuller 1964-10-8 12708 Lassen Wendel Hot Springs, ca. 1 mile west of Wendel. 0 Comment
  CAS-BOT-BC240002  Scribneria bolanderi Alice Eastwood; John Thomas Howell 1940-6-11 7974 Lassen Big Valley Mts. Comment
  UCD92528  Scribneria bolanderi Malcolm A. Nobs; S. Galen Smith, Herbert L. Mason 1949-5-29 759 Lassen on Great Northern Railroad, Highway 299, Nubeiber. Comment
  RSA516386  Scrophularia desertorum Barbara Ertter, Gary Schoolcraft 1987-6-16 7191 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  CAS-BOT-BC5845  Scutellaria holmgreniorum Noel Herman Holmgren; Patricia K. Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy 395 via Rye Patch Canyon 1580 Comment
  CAS-BOT-BC214266  Scutellaria nana Clarence R. Quick 1966-7-22 66 -55 Lassen Edge of logging road 19, east of Patterson Flat 1706 Comment
  CAS-BOT-BC214270  Scutellaria nana John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50692 Lassen Slope south and southeast of Diamond Mt., Sierra Nevada 2286 Comment
  CHSC91527  Scutellaria nana L. P. Janeway 2005-7-4 8461 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC1609093  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-7-8 5653 Lassen on se edge of Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi n of Hwy 44) 1709 Comment
  UC1609176  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-6-28 5595 Lassen e of Poison Lake (Harvey Valley Rd. (33N02), 2.0 mi n of Hwy 44, between Grays Valley and Harvey Valley); Harvey Valley Rd. 1734 Comment
  UC25818  Scutellaria nana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC726647  Scutellaria nana A. A. Heller 1938-6-23 15186 Lassen 1 mi s of Westwood 1524 Comment
  SEINET13947826 Image available Scutellaria nana Clarence R. Quick 1964-1 64 -92 Lassen Cal Mt. E of Poison Lake; ca 5800 ft alt. 1768 Comment
  SEINET13947829 Image available Scutellaria nana G. Schoolcraft 1986-1 1628 Lassen Ca 3 mi E of Hwy 395 on Hall Springs Road; 4700 ft alt., T32N, R16E, SEC32 1433 Comment
  CAS-BOT-BC240085  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak Comment
  SEINET4891272  Secale cereale M. J. Williams 1974-7-26 74 -I-38 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 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
  RSA712935  Senecio aronicoides L. P. Janeway 2005-7-4 8471 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC1063252  Senecio aronicoides A. Simontacchi 1940-5-28 769 Lassen 9.3 mi nw Crater Lake; Halls Flat Quad. 1752 Comment
  UC506921  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Lassen Forest 1783 Comment
  CHSC23475  Senecio clarkianus Wayne O. Baum 1971-7-14 71 -61 Lassen N. slope of Gallatin Peak. 2011 Comment
  CDA8612  Senecio eurycephalus T. C. Fuller 1963-7-15 10895 Lassen 1.1 mile west of Little Valley. 0 Comment
  CHSC20308  Senecio hydrophiloides S. Villard 1973-7-7 63 Lassen Meadow, off county dirt road, 5 mi from Red-Rock Lookout. 2133 Comment
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Apr 29 2013
  JEPS17740  Senecio hydrophiloides Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5413 Lassen 4.4 mi s Patterson Ranger Station (in meadow e edge of Long Valley, s end of the Warner Mountains); Modoc National Forest, Warner Mountains, Long Valley 2057 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
  RSA0012449  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen east of Westwood, the margin bordered with sagebrush, where a tongue of Upper Sonoran protrudes into the Transition Life Zone. Comment
  OBI76982  Senecio integerrimus var. exaltatus Anthony Baniaga 2011-6-20 384 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  CDA8643  Senecio integerrimus var. exaltatus G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2800 Lassen 2.0 miles (3.2 km) north of Grasshopper Road on Westside Road. Dry Valley Ridge, west side of Madeline Plains. Comment
  UC1562885  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  CAS-BOT-BC213324  Sidalcea G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  UCR18792  Sidalcea glaucescens Frank C. Vasek 1975-7-11 750711- 33 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC30043  Sidalcea oregana Cindy Prouty 1978-7-27 7 Lassen Little Antelope Valley, W of Eagle L. 1792 Comment
  POM84765  Sidalcea oregana subsp. oregana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  POM84772  Sidalcea oregana subsp. spicata Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  NY746728  Sidalcea oregana var. maxima A. Tiehm 1988-6-2 11704 Lassen East side of Snowshoe [Snowstorm?] Mountain, 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway 1402 Comment
  CAS-BOT-BC384312  Silene bernardina Clarence R. Quick 1966-7-22 66 -52 Lassen Susanville-Pittville road, Blacks Mtn. Hdqts.; Halls Flat, 9 m. e. of Hat Creek 1706 Comment
  CDA24107  Silene douglasii T. C. Fuller 1963-7-15 10898 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  UC1523715  Silene douglasii Gary Schoolcraft 1981-7-15 512 Lassen near top Fredonyir Peak; near top Fredonyir Peak 2346 Comment
  UC773919  Silene douglasii L. R. Short and D. Gish 1936-7-15 S- 487 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1743 Comment
  CAS-BOT-BC136278  Silene douglasii A. R. Kruckberg 1951-9-2 2899 Lassen across road from Lake Helen, Lassen N.P. 2743 Comment
  OBI75896  Silene menziesii Anthony Baniaga 2011-8-17 507 Lassen Lassen Natl Forset. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E SW of SW 1896 Comment
  CHSC106846  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen Ridge of Diamond Mts ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville. 2255 Comment
  CHSC83192  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). Meadow. 1700 Comment
  JEPS123843  Silene nuda Lowell Ahart, John Dittes 2015-7-14 20334 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UCD18969  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  UCD18970  Silene nuda subsp. insectivora Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  JEPS50951  Silene occidentalis subsp. occidentalis Brown and Wieslander 1922-7-23 32 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  UC8482  Silene occidentalis subsp. occidentalis Milo S. Baker 1896-7-30 Lassen Silver Lake Comment
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Sep 9 2015
  CHSC112766  Sisymbrium altissimum Lowell Ahart; John Dittes 2013-7-23 18884 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
  HSC27354  Sisymbrium altissimum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19283 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC1126792  Sisymbrium altissimum E. Sawyer 1935-6-27 224 Lassen Long Valley 1310 Comment
  SEINET10448851  Sisymbrium altissimum Billy Joe Cox, Paul Gallian 1971-2-2 Cox 2583 Lassen 6 mi. S. Of adin; along calif. 139 Right-of-way; in basalt-clay, grassy road bank; artemesia juniper assoc. 1372 Comment
  CHSC64775  Sisymbrium orientale Vernon H. Oswald 1995-5-31 6803 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  RSA0035823  Sisyrinchium bellum Lowell A. Ahart, John Dittes 2008-6-20 14964 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA123140  Sisyrinchium bellum L. R. Short, William Gansberg 1936-6-11 S- 430 Lassen Burgess Spr. Exp. Range 1731 Comment
  CAS-BOT-BC364907  Solidago velutina subsp. californica Louella Bass 1973-9-4 EV 134 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC158899  Sorbus scopulina John Thomas Howell; Gordon H. True 1973-8-1 50151 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  CAS-BOT-BC236547  Sorghum halepense Louella Bass 1980-7-29 EV 5 -80 Lassen Elysian Valley, Hwy. 395 at County Road 207, near Jamesville, Sierra Nevada Comment
  CHSC59194  Sparganium angustifolium Vernon H. Oswald; Lowell Ahart 1992-9-15 5214 Lassen Lassen Volcanic National Park. Island Lake located N of Bonte Pk. and ca. 1.5 mi W of Juniper Lake campgrounds. On the margin of the lake. 2164 Comment
  CHSC41847  Sparganium emersum subsp. emersum P. V. Caldwell 1972-7-13 297 Lassen Eagle Lake. In Papoose Ck. From the road that crosses the creek towards Papoose Meadow, 1st 600 m. Comment
  UC1099936  Sparganium emersum var. emersum Verne Grant and Irving Schneider 1947-8-24 8271 Lassen nw shore Blue Lake (n Lassen County) Comment
  CAS-BOT-BC390559  Spergularia rubra G. Schoolcraft 1997-8-6 2656 Lassen Along w. fork of Gold Run Creek about 8 miles sw of Susanville 1859 Comment
  HSC68557  Sphaeromeria cana Gary Schoolcraft 1979-7-6 127 Lassen N side of Skedaddle Mtns. 1997 Comment
  JEPS103181  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  POM82495  Sphenosciadium capitellatum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC13098  Spiraea densiflora M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  OBI77204  Spiraea douglasii Anthony Baniaga 2011-8-10 515 Lassen Lassen NF. along Robbers Crk. Swain Mtn quad T29N R8E sec 35 NE of SW 1721 Comment
  CHSC61074  Spiranthes porrifolia Vernon H. Oswald 1993-8-3 5754 Lassen Cooper Swamp located E of Siver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC65281  Spirodela polyrhiza Vernon H. Oswald 1995-8-21 7213 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. At the SW corner of the lake. 1859 Comment
  CHSC5276  Stachys ajugoides var. rigida L. Harman 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  SEINET7977004  Stachys rigida C. G. Gulling 1905-1 s.n. Lassen Big Meadows. 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
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  CAS-BOT-BC391079  Stellaria longipes subsp. longipes B. C. Cain 1925-8-24 69 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park Comment
  CHSC229  Stellaria longipes var. longipes 1944-6-30 Lassen Grasshopper Valley near Eagle Lake. 1615 Comment
  CHSC76747  Stellaria longipes var. longipes L. P. Janeway 1999-9-5 6577 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. On south edge of pond. 1900 Comment
  JEPS114768  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2008-6-20 14956 Lassen About 200 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
  SEINET10537644  Stellaria longipes var. longipes Mary Merello 1993-6-28 Merello 756 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  POM42274  Stenotus acaulis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 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
  CAS-BOT-BC375067  Stephanomeria Clare B. Hardham 1969-8-28 17423 Lassen Slope west of Janesville Comment
  CAS-BOT-BC322921  Stephanomeria tenuifolia George W. Gillett 1957-7-26 901 Lassen Butte Lake, Lassen Volcanic National Park 1844 Comment
  UC584294  Stephanomeria tenuifolia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2207 Lassen just w Susanville (on Inspiration Point) 1280 Comment
  CHSC66853  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1996-10-3 8296 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 13.4 mi N of Smoke Creek Ranch Rd. Roadside. 1524 Comment
  UCR244171  Stipa comata Jim Andre, G. L. Clifton 1993-6-3 19701 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  SEINET10966883  Stipa thurberiana Paul Gallian, David B. Dunn 1971-6-2 Gallian 513 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
  UCD149957  Stuckenia filiformis subsp. alpina William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  UC1123452  Swertia albicaulis var. albicaulis A. Simontacchi 1940-6-6 823 Lassen 3.6 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC585195 Image available Swertia albicaulis var. albicaulis E. B. Babcock and G. L. Stebbins Jr. 1936-6-8 1790 Lassen about 2 mi n Madeline; ; Madeline, Lassen Co. 1371 Comment
  CHSC27669  Swertia albicaulis var. nitida Robert A. Schlising 1978-7-9 3312 Lassen S of Eagle Lake; forested area between Papoose Meadows and Eagle Lake Road. Comment
  CHSC60349  Symphoricarpos rotundifolius var. rotundifolius Mary Ann Showers 1992-6-13 2532 Lassen Lassen Volcanic National Park. East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. 1841 Comment
  CHSC67077  Symphoricarpos rotundifolius var. rotundifolius Jeanne Boze 1981-6-12 120 Lassen 1/4 mi. south of Eagle Lake Field Station. 1615 Comment
  UC1136760  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spr. Exp. Range 1792 Comment
  CHSC52664  Symphyotrichum campestre James D. Jokerst 1983-7-24 1885 Lassen Near Madeline Plains. 1614 Comment
  UCD136493  Symphyotrichum campestre Verne Grant; Irving Schneider 1947-7-31 8210 Lassen northeast quarter of George Williams section 19, Madeline Plain. Comment
  CAS-BOT-BC98929  Symphyotrichum foliaceum var. parryi G. Schoolcraft 1994-7-6 2359 Lassen About 1 mile west of Boot Lake 204 Comment
  CHSC59130  Symphyotrichum frondosum Vernon H. Oswald 1992-7-3 5054 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1851 Comment
  CHSC76082  Symphyotrichum frondosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8210 Lassen Just south of the parking area, about 1 mile south of the sign-in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1924205  Symphyotrichum spathulatum Debra Valov 2005-8-20 2005219 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UCD18966  Symphyotrichum spathulatum Raymond D. Ratliff 1965-8-5 46 Lassen Lassen National Forest, Gooch Valley Allotment, Mosquito Flat (Gooch V. 70-1). 1889 Comment
  SEINET10826287  Taraxacum californicum David B. Dunn, Billy Joe Cox 1971-1 Lassen Comment
  JEPS94483  Taraxia subacaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8521 Lassen 3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04 1731 Comment
  CHSC4928  Taraxia tanacetifolia L. G. Bennett 1967-6-28 55 Lassen North end of Murrers meadow, near Eagle Lake. 1493 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
  JEPS31727  Taraxia tanacetifolia W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment
  UC1368460  Taraxia tanacetifolia R. K. Gierisch 1969-7-18 3550 Lassen near Modoc <National Forest>; Madeline P