Search Results — 2000 specimen records retrieved (1592 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC13792  Abies concolor Anne Linda Brisk 1969-7-2 33 Lassen Growing along the shore of Mohogany Lake. Comment
  CHSC84856  Abies concolor L. P. Janeway; B. Castro 2003-10-5 8002 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  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
  CAS-BOT-BC330611  Acer glabrum var. glabrum John Thomas Howell; Gordon H. True 1973-8-1 50152 Lassen Sierra Nevada. Gold Run Creek road S of Susanville, Diamond Range 1584 Comment
  RSA603232  Acer glabrum var. torreyi C. Epling, Wm. Robinson 1935-7-19 s.n. Lassen Sulphur Spring, Lassen Park Comment
Read comments
May 1 2013
  RSA394187  Acer macrophyllum Christopher Davidson 1975-6-6 2726 Lassen Road to Thompson Peak, branching east of road 204, 7.5 miles SW of Susanville, following Gold Run Creek 0.5 mile on this road to the peak 1494 Comment
  CAS-BOT-BC334175  Acer negundo var. californicum J. T. Howell 1975-7-23 s.n. Lassen Susanville, in park 1295 Comment
  CHSC30558  Achillea millefolium Sori H Shad 1970-6-26 13 Lassen Dean's Meadow. 1524 Comment
  CHSC4909  Achillea millefolium A. E. Anderson 1967-7-1 67 Lassen Along fence n of road to Murrer Ranch, 1 mi. from ranch buildings. 1371 Comment
  JEPS36915  Achillea millefolium Brown and Wieslander 1922-7-30 18 Lassen meadow near Martin Springs; Eagle Lake Comment
  UC1537057  Achillea millefolium Gordon H. True Jr. 1936-6-22 524 Lassen se of, near edge of slough Litchfield; Honey Lake Valley 1219 Comment
  SEINET11842145  Achillea millefolium Unknown 1978-1 30 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. T29N, R10E, sec. 24 1500 Comment
  UC1024644  Achnatherum Leo Whitney 1933-7-1 2214 Lassen Slate Creek, ca. 8 mi nw Eagle Lake; Lassen National Forest Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia 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
  CAS-BOT-BC210660  Achnatherum lemmonii John Thomas Howell 1973-7-10 49774 Lassen Fredonyer Pass 1737 Comment
  UC1137759  Achnatherum lemmonii August L. Hormay 1934-5-15 Lassen e Eldrige's; Lassen National Forest 1524 Comment
  UCD32658  Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD50593  Achnatherum lemmonii L. Whitney 1933-7-7 s.n. Lassen Halls Flat, Lassen County. 1737 Comment
  CHSC114405  Achnatherum nevadense Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A. 2133 Comment
  CAS-BOT-BC216456  Achnatherum occidentale subsp. californicum Clare B. Hardham 1971-8-22 18413 Lassen Diamond Mountain 2346 Comment
  POM115575  Achnatherum occidentale subsp. occidentale Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA129479  Achnatherum occidentale subsp. occidentale L. R. Short, J. Warren 1936-6-29 S- 462 Lassen Lassen [National?] Forest 1821 Comment
  RSA129480  Achnatherum occidentale subsp. occidentale G. A. Fischer, I. H. Johnson 1933-7-12 F- 199 Lassen Grass Valley 1697 Comment
  UC1024959  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-24 3303 Lassen ca. 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UC1137654  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 218 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest 1722 Comment
  UCD32655  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2051 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CAS-BOT-BC218007  Achnatherum thurberianum J. A. Jenkins 1937-7-15 2355 Lassen SW slope Big Valley Mountain along highway from McArthur to Bieber 1127 Comment
  SEINET235293  Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC1024911  Achnatherum thurberianum Leo Whitney 1935-6-25 3372 b Lassen ca 13 mi w of upper end Eagle Lake; Ashurst Mountain Comment
  UCD51444  Achnatherum thurberianum R. Tofsrud 1947-7-1 223 Lassen Between Ravendale and Thermos. Comment
  UC579786  Achnatherum webberi David D. Keck and J. Clausen 1935-6-24 3749 Lassen 2 mi s, on borders of an alkali mud flat Ravendale 1465 Comment
  SBBG67342  Acmispon americanus S. W. Hutchinson -Jun-1925 539 Lassen Eagle Lake region 1554 Comment
  CHSC5075  Acmispon americanus var. americanus D. L. Stites 1967-7-8 121 Lassen Ca. 18 mi n of Susanville. 1371 Comment
  CHSC58841  Acmispon nevadensis var. nevadensis Vernon H. Oswald; Lowell Ahart 1992-7-16 5106 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
  JEPS23491  Aconitum columbianum Frances D. Payne 1929-7-12 92 Lassen n.e. Lassen Co., Upper Silver Creek Warner Mts., n.e. Lassen Co., Upper Silver Creek 2286 Comment
  JEPS60355  Aconitum columbianum Brown and Wieslander 1922-7-30 19 Lassen Eagle Lake, Martin Springs Comment
  UCD98583  Aconogonon davisiae Hans Leschke 1945-9-14 s.n. Lassen Mt. Lassen trail. 2621 Comment
  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
  JEPS124517 Image available Adonis aestivalis D. Griffiths 1967-7-12 179 Lassen 3 miles north of Willow Creek Camp. On Hiway 139. 100 yards east of road. Comment
  CHSC65107  Agastache parvifolia Vernon H. Oswald 1995-7-24 7132 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  CHSC67060  Agastache parvifolia Willis Ball 1969-6-25 27 Lassen Found in Upper Murrer's Meadow. 1584 Comment
  CAS-BOT-BC30239  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen West of Janesville Comment
  JEPS62630  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen w of Janesville; Sierra Nevada Comment
  HSC63943  Ageratina occidentalis Teresa Prendusi 1980-7-16 Lassen Willow Creek 1463 Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long Valley Comment
  CHSC91811  Agoseris glauca G. Douglas Barbe 1974-8-20 1922 Lassen Upper Lond Valley. Hallelujah Junction, northwest corner of jct. of US Hwy 395 and Hwy 70. 1524 Comment
  POM33406  Agoseris glauca var. dasycephala F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
Read comments
Mar 6 2011
  JEPS94999  Agoseris heterophylla Vernon Oswald and Lowell Ahart 1997-6-24 8601 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  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
  POM318656  Agoseris heterophylla var. heterophylla Patricia Wilder 1971-6-20 5053 Lassen About 6 miles southeast of Adin on Adin - Madelaine Road; Modoc National Forest; Cascades mountain range, Cascade River drainage area 1768 Comment
  UC1136777  Agoseris parviflora L. R. Short and J. Warren 1936-6-5 S- 372 Lassen Burgess Spr. Exp. Range Lassen National Forest 1798 Comment
  UC584270  Agoseris parviflora G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2325 Lassen about 1 mi below summit Black Mt. 1940 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
  SEINET3915762  Agropyron cristatum LeDoux, Dunn 1973-5-24 859 Lassen Collected at jct. of Hwy. 70&395 at Arco Station.; 0 Comment
  SEINET10789617  Agropyron cristatum John Thomas Howell 1961-9-25 Howell 36970 Lassen East side of Beckwourth Pass. Sierra Nevada. 1554 Comment
  JEPS88236  Agropyron desertorum Vernon H. Oswald and Lowell Ahart 1996-6-17 7800 Lassen 7 mi w of Susanville (1 mi e of Devils Corral Trailhead, Bizz Johnson Trail (accessed at Devils Corral Trailhead), off Hwy 36); Modoc Plateau 1420 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
  SEINET12950845  Agrositanion saundersii B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11518 Lassen Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat.; 41.08261 -120.34968 1692 Comment
  RSA0105582  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC139298  Agrostis idahoensis John Thomas Howell; Gordon H. True 1973-8-1 50232 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  JEPS28273  Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen near Snag Lake south shore (100 yards above lake); Lassen Volcanic National Park 1850 Comment
  RSA299277  Agrostis idahoensis J. T. Howell, Gordon H. True 1973-8-1 50232 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2134 Comment
  POM115803  Agrostis microphylla Marcus E. Jones 1897-6-23 132 Lassen Amedee. 1220 Comment
  SEINET4341134  Agrostis pallens G. Schoolcraft 1994-7-6 2349 Lassen About 1.5 miles NE of Red Rock Lake 2042 Comment
  UCD53272  Agrostis scabra L. Whitney 1933-8-4 2228 Lassen Sheepshead, 10 miles northwest of north end of Eagle Lake, Lassen National Forest. 1889 Comment
  CAS-BOT-BC138622  Agrostis stolonifera H. S. Yates 1936-8-11 6069 Lassen Baxter Creek. 1280 Comment
  CAS-BOT-BC138570  Agrostis variabilis John Thomas Howell 1959-9-23 34890 Lassen North end of Juniper Lake, Lassen Park. 2057 Comment
  UC1536805  Alisma plantago-aquatica Gordon H. True Jr. 1939-7-6 1016 Lassen George Bailey Ranch Honey Lake Valley Comment
  UC843269  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen e Fredonyer Pass (on Highway #36) 1645 Comment
  CAS-BOT-BC459571  Allium acuminatum H. C. Cantelow 1940-5-31 s.n. Lassen 4 miles east of Mc Arthur, Highway 299 Comment
  UC3062  Allium amplectens M. S. Baker and F. Nutting 1894-7-1 Lassen Dixey Mts. Comment
  HSC67113  Allium anceps Dale McNeal 1980-6-1 2340 Lassen Beside Hwy. 88 between Adin and Madeline, 15 mi. E of Hwy. 299 in Adin Comment
  CAS-BOT-BC135913  Allium atrorubens var. atrorubens Arnold Tiehm; Margaret Williams; Jan Nachlinger 1988-6-2 11702 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, west of the highway. 1386 Comment
  UC1133790  Allium campanulatum A. Simontacchi 1940-7-1 935 Lassen 2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS26135  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spring Experiment Range 1798 Comment
  JEPS87459  Allium lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-28 5587 Lassen e. of Poison Lake (Harvey Valley Rd. (33N02), 1.2 mi n. of Hwy. 44, e side of Grays Valley); Grays Valley 1731 Comment
  POM110069  Allium lemmonii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC843374  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen overflow of Pitt River 1 mi w Bieber; Pitt River Comment
  CAS-BOT-BC472752  Allium lemmonii Elmer I. Applegate 1897-6-3 3029 Lassen South end of Madeline Plains 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
  CHSC7185  Allium parvum Lynn R. Thomas 1969-4-17 90 Lassen 100 yds n of Ward Lake, ca. 15 mi e of Susanville. 1280 Comment
  UCD55299  Allium parvum Ellen Dean; Gary Schoolcraft 2006-5-16 3120 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  SEINET8191388  Allium parvum L. Miller 1934-3-29 s.n. Lassen E of Susanville. Comment
  CHSC58861  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1992-7-16 5108 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  UCD55830  Alopecurus aequalis L. Whitney 1933-8-4 2200 Lassen Lassen National Forest, ca. 8 miles northwest of Eagle Lake, Slate Creek. 1920 Comment
  UCD55871  Alopecurus aequalis Beecher Crampton 1964-6-27 7097 Lassen ca. 8 miles southeast Ravendale B.L.M. Spanish Springs- Shinn Mountains Resource Conservation area. 1981 Comment
  SEINET10510844  Alopecurus aequalis Alan A. Beetle 1941-6-28 Beetle 2795 Lassen 10 miles west of Chester, rte 36, open meadow near small stream. Assoc. Scirpus congdoni, Deschampsia, Ranunculus. Comment
  CHSC99293  Alopecurus geniculatus Lowell Ahart; John Dittes 2008-6-20 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. 1263 Comment
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley Comment
  CHSC67190  Alyssum minus subsp. micranthum James D. Jokerst 1991-5-28 3293 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, ca. 400 ft E of the highway on slopes above road, S of a small canyon mouth. 1554 Comment
  HSC102800  Alyssum simplex L. Ahart 2011-6-20 17493 Lassen 1.9 air miles NW of Moll Reservoir, 2.8 air miles W of Ash Valley, 8.4 air miles SE of Adin; ~ 80 yds. N of where road crosses Hunsinger Draw 1521 Comment
  JEPS93815  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1998-6-4 9144 Lassen s of Constantia (at parking area at end of spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  CHSC5065  Amaranthus albus D. L. Stites 1967-7-1 143 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  JEPS78111  Amaranthus blitoides Gary W. Zamzow 1972-7-18 86 Lassen beside Highway 395, 3 mi n Hallelujah Junction 1371 Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 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
  JEPS121243  Amaranthus californicus Lowell Ahart, John Dittes 2013-7-22 18860 Lassen 50 yards W of the road levee, about 250 yards S of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC174355  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca. 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles east of Sierra Valley 1584 Comment
  RSA252462  Ambrosia acanthicarpa R. F. Thorne, C. W. Tilforth 1969-9-6 39266 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  SJSU13939  Ambrosia acanthicarpa N. A. Hopkins 1986-8-28 1378 Lassen by County Road 33 (Scott Road), lower Long Valley, N of Highway 70 & E of Beckwourth Pass Comment
  UCR67435  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC42889  Ambrosia acanthicarpa P. Monnet 1913-8-1 966 Lassen unspecified Comment
  UCD112861  Amelanchier alnifolia Beecher Crampton 1954-5-11 1881 Lassen Beckwourth Pass, Plumas. 1588 Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  RSA38467  Amelanchier pallida Philip A. Munz 1947-5-19 11859 Lassen Fredonyer Forest Camp Ground on Hwy 36 W of Susanville. 1509 Comment
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  UC1924571  Amelanchier utahensis Debra Valov 2006-5-29 2006021 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CHSC99503  Amsinckia intermedia Lowell Ahart; John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0091257  Amsinckia macrosepala Amos Arthur Heller 1938-6-23 15204 Lassen Just outside of Johnstonville on U.S. Highway 395. Comment
  HSC97154  Amsinckia menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen N side of Scott Rd., E of the railroad underpass, Long Valley, about 4.75 mi. N of the intersection of Scott Rd. and Hwy. 70, 6.2 mi. NW of Hallelujah Jct. 1460 Comment
  UCD169449  Amsinckia menziesii Lowell Ahart; John Dittes 2005-6-1 11899 Lassen 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, east side of the railroad underpass, on the north side of Scott Road. 1459 Comment
  JEPS124575 Image available Amsinckia menziesii Rechen 1964-6-30 84 Lassen 5 miles north of boundary edge of Modoc Nat. Forest on Lassen A-2 Road. Comment
  UC726761  Amsinckia menziesii var. menziesii A. A. Heller 1941-6-24 16190 Lassen 1 mi e Bieber (along the highway) Comment
  SEINET12509727  Amsinckia tessellata F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  UC1562726  Angelica breweri Barbara Ertter 1988-7-25 7869 Lassen 1.5 mi e of Diamond Peak (10 air mi due s of Susanville, Diamond Mountains); Diamond Mountains 2255 Comment
  UC380911  Antennaria argentea Marcus E. Jones, A. M. 1897-6-25 Lassen Susanville 1341 Comment
  CAS-BOT-BC63952  Antennaria argentea H. D. Ripley; R. C. Barneby 1944-5-29 5958 Lassen Susanville Comment
  HSC42425  Antennaria argentea Barbara Kelly 1977-8-8 550 Lassen Ash Creek Campground Comment
  SEINET2029685 Image available Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds about 12 miles north of Fall River Mills (in Shasta County) on Fall River 1372 Comment
  SEINET6735052 Image available Antennaria corymbosa B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11496 Lassen Blue Door Flat, seven or eight miles east of HWY 295 on county road 510 1774 Comment
  CAS-BOT-BC59216  Antennaria dimorpha John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49200 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC5193  Antennaria dimorpha 1945-6-1 Lassen Eagle Lake. 1584 Comment
  UC180151  Antennaria dimorpha unknown 1892-6-24 Lassen Honey Lake Comment
  UC1951075  Antennaria dimorpha Debra Valov 2009-4-25 2009016 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CAS-BOT-BC69135  Antennaria geyeri Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC69141  Antennaria geyeri Clare B. Hardham 1969-8-28 17453 D Lassen West of Janesville Comment
  CHSC60808  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5584 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  RSA702449  Antennaria luzuloides L. P. Janeway 2004-6-26 8167 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  RSA637571  Antennaria luzuloides Michael A. Vincent 1999-6-9 8577 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
  CHSC89757  Antennaria luzuloides subsp. aberrans L. P. Janeway 2004-6-26 8168 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC68842  Antennaria rosea subsp. confinis Vernon H. Oswald; Lowell Ahart 1997-6-24 8647 Lassen South of Susanville at the small pond on the crest of Diamond Mtn., about mid-way between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC99146  Apera interrupta Lowell Ahart; John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1537515  Apocynum cannabinum Gordon H. True Jr. 1937-7-10 782 Lassen Bull Flat, Refuge 1Q 1524 Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  RSA0129285  Arabis holboellii var. pinetorum R. C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake. Comment
  RSA0129096  Arabis oligantha Franklin P. Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  JEPS53155  Arabis rectissima var. rectissima Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  SEINET2471218  Arceuthobium campylopodum R. L. Mathiasen 2009-8-20 2009 -51 Lassen 2 km NW. of jct. of State Rte. 44 and State Rte. 36 on Rte. 44 1563 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-BC45896  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45898  Arctostaphylos nevadensis A. H. Kramer 1930-7-1 s.n Lassen Prospect Peak, Lassen National Park Comment
  CAS-BOT-BC45901  Arctostaphylos nevadensis A. W. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45904  Arctostaphylos nevadensis M. S. Jussel 1931-9-6 s.n Lassen Sulphur Works, Mt. Lassen 2133 Comment
  UC21853  Arctostaphylos nevadensis M. S. Baker and Frank Nutting 1894-1 Lassen 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
Read comments
Apr 29 2013
  SD43498  Arctostaphylos patula Philip A. Munz 1947-5-18 11865 Lassen Fredoyner Forestry Public Campground, W of Susanville 1509 Comment
  CAS-BOT-BC42167  Arctostaphylos patula subsp. patula C. Hart Merriam 1924-8-5 s.n. Lassen Pit River, Ponderosa ride between Big Valley and Pittville Comment
  CHSC5227  Arenaria aculeata R. Gein 1946-6-20 Lassen Eagle Lake. Summit of Mt. Fredonyer. 2421 Comment
  POM101445  Arenaria congesta Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS46143  Arenaria congesta var. congesta Duncan Dunning 1921-8-19 Lassen 3 m s Antelope Mountain (south and west of Eagle Lake. East tributary of Pine Creek.); Martin Spring, Pine Creek Comment
  CAS-BOT-BC27516  Arenaria congesta var. simulans Amos Arthur Heller 1938-6-23 15198 Lassen 2 miles E of Fredonyer Pass 1645 Comment
  JEPS100348  Arenaria kingii var. glabrescens Dean W. Taylor 2001-6-28 17816 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  CAS-BOT-BC401790  Argemone munita subsp. rotundata P. Monnet 1913-7-1 945 Lassen Doyle Comment
  UC71725  Argemone rotundata Mrs. M. H. Manning 1902-9-1 1 Lassen Reno Nevada to Amadee California Amadee Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  JEPS17745  Arnica chamissonis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5414 Lassen Mosquito Creek (along), in Corporation Meadow, s end of Warner Mts. Modoc National Forest, Warner Mts., Corporation Meadow, Mosq 2042 Comment
  SEINET3082318 Image available Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen Yellow Pine Forest, 1 mile east of Fredonyer Pass, on State Highway #36. 1740 Comment
  OBI76962  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill along 30N21. Swain Mtn quad. T30N R8E sec 5 SW of SW 1918 Comment
  CHSC115054  Arnica fulgens J. Moeller; S. Puentes 2008-5-14 Lassen DFG OCC #13. Along 33N02 Harvey Valley Road off HW 44, ~5.8 air miles east of Poison Lake. 1735 Comment
  CHSC89756  Arnica mollis L. P. Janeway 2004-6-26 8166 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UCD129145  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  SEINET3358258 Image available Artemisia arbuscula A. A. Beetle 1957-8-16 12763 Lassen Between Susanville and Johnstonville. Comment
  UCD129186  Artemisia arbuscula B. L. Kay 1955-4-19 s.n. Lassen 15 miles north of Honey Lake. US Highway 395. Comment
  UCD129263  Artemisia biennis Malcolm A. Nobs; Galen Smith 1949-8-20 1482 Lassen Long Creek, 1 mile north of Doyle, Honey Lake Valley. Comment
  SBBG95821  Artemisia cana G. K. Helmkamp 1990-9-23 A- 5 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  UC1242648  Artemisia cana subsp. bolanderi A. A. Beetle 1957-8-16 12910 Lassen Litchfield Comment
  UCD129268  Artemisia cana subsp. bolanderi W. Robert Powell 1985-7-30 3523 Lassen 16 air miles SSE of Adin (Modoc Co.), 0.9 mile SSE of Hayden Hill L.O., 0.4 mile west of Daisy Dean Spring. East slope, 3 percent. 1676 Comment
  CAS-BOT-BC90329  Artemisia douglasiana Clare B. Hardham 1969-8-28 17443 Lassen slope west of Janesville Comment
  JEPS28717  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen near Butte Lake Trail (above Snag Lake); Lassen Volcanic National Park 1859 Comment
Read comments
Aug 23 2012
  CAS-BOT-BC499174  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen Lassen Volcanic National Park. Snag Lake; near the Butte Lake Trail above Snag Lake 1859 Comment
  JEPS37007  Artemisia dracunculus W. L. Jepson 1918-8-3 7799 Lassen Honey Lake Valley 1219 Comment
  UC91221  Artemisia ludoviciana subsp. incompta unknown 1892-6-29 Lassen Janesville Comment
  UC1537358  Artemisia ludoviciana subsp. ludoviciana Gordon H. True 1937-7-10 783 Lassen Bull Flat Refuge 1Q, Bull Flat 1524 Comment
  UCD129340  Artemisia nova W. A. Williams 1951-8-6 s.n. Lassen Black's Mountain Range Experiement Station, (old Hell's Flat Ranger Station site). 25 miles south of Pittville. 1584 Comment
  CAS-BOT-BC97325  Artemisia tridentata subsp. tridentata George W. Gillett 1957-9-4 1132 Lassen Near Bute Lake; intersection of the Widow Lake - Snag Lake trails 1859 Comment
  CHSC110309  Artemisia tridentata subsp. tridentata L. P. Janeway; B. Castro 2012-7-2 10927 Lassen Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road. 1473 Comment
  RSA647532  Artemisia tridentata subsp. tridentata Marion P. Harthill 1972-6-16 793 Lassen Doyle Comment
  RSA758317  Artemisia tridentata subsp. tridentata Doug Goldman 2004-11-5 2935 Lassen To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake 1256 Comment
  SEINET230064  Artemisia tridentata subsp. tridentata Leila M. Shultz, John S. Shultz 1985-6-23 8611 Lassen Long Valley Creek drainage, 5 miles north of Doyle 1305 Comment
  UC762002  Artemisia tridentata subsp. tridentata R. F. Hoover 1940-9-28 4639 Lassen Leavitt Comment
  UC773962  Artemisia tridentata subsp. vaseyana L. R. Short 1936-9-30 S- 505 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1752 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
  JEPS49969  Asclepias fascicularis Brown and Wieslander 1922-7-25 31 Lassen Martin Sprs. Eagle Lake Comment
  UC1096430  Asclepias speciosa George A. Fischer, Irwin H. Johnson 1933-7-29 F- 276 Lassen Stringer Lassen National Forest 1694 Comment
  RSA712642  Aster occidentalis var. occidentalis L. P. Janeway 2005-8-31 8513 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  CHSC69211  Astragalus James D. Jokerst 1991-5-28 3299 Lassen Modoc Plateau. Junction Hwy. 395 with Hwy. 36 SE of Susanville, E side of road 150 ft S of junction. 1280 Comment
  POM204051  Astragalus accidens var. hendersonii J. T. Howell 1934-6-10 11875 Lassen Janesville Comment
  CAS-BOT-BC177435  Astragalus andersonii Margaret Williams 1974-8-4 74 -L-83 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-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
  CHSC93569  Astragalus andersonii Lowell Ahart; John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  HSC42428  Astragalus anxius Barbara Kelly 1977-8-9 558 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  CAS-BOT-BC178765  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains N. of Observation Pk. & Horne Ranch Rd. 1645 Comment
  CDA26651  Astragalus curvicarpus T. C. Fuller 1965-6-3 13607 Lassen 1.3 miles west-northwest of Janesville. 0 Comment
  SEINET5325001  Astragalus curvicarpus M. J. Williams, J. T. Howell 1973-5-12 73 C-16 Lassen Near Herlong turn-off, Hwy. 395. 1250 Comment
  CHSC23432  Astragalus curvicarpus var. curvicarpus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5816 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CHSC64875  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald 1995-6-26 6923 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CAS-BOT-BC177846  Astragalus curvicarpus var. curvicarpus Ella Dales Cantelow 1941-5-22 3657 Lassen 3 1/2 mi. s. of Secret Valley, C.C.C. Camp U.S. Hy 395 Susanville to Alturas Comment
  SEINET5325006  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch. 1280 Comment
  SEINET7103990  Astragalus curvicarpus var. curvicarpus T. N. Kaye 1990-6-27 1254 Lassen Ash Valley Road, 16 miles east of Adin.; 0 Comment
  CAS-BOT-BC182952  Astragalus filipes Lassen 1927 G. S. Crew 1927-7-15 74 Lassen Lassen National Forest 1725 Comment
  CHSC37299  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi s of Constantia. 1402 Comment
  HSC82216  Astragalus filipes Thomas W. Nelson, Jane P. Nelson 1980-7-6 6001 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  NY658483  Astragalus filipes G. Schoolcraft 1982-6-22 747 Lassen Ft. Sage Mtns. 1767.8 Comment
  NY813074  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km south of Doyle on U.S. Highway 395 1430 Comment
  UC13367  Astragalus filipes M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC1583579  Astragalus filipes G. Schoolcraft 1990-6-13 2093 Lassen in John's Valley about 4 mi s Nubierber; s of Nubieber in John's Valley 1371 Comment
  CDA26669  Astragalus filipes T. C. Fuller 1965-8-26 14038 Lassen Haskell Parks range, Diaz Flat, ca. 5 miles east of Hayden Hill, northwest Lassen County. 0 Comment
  CAS-BOT-BC186853  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  CDA19718  Astragalus gibbsii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 1341 Comment
  CDA26675  Astragalus gibbsii Taylor Jun 1938 Lassen Susanville. 0 Comment
  NY674270  Astragalus gibbsii K. Morris 1973-5-25 214 Lassen 4 miles south of Susanville, on US 36 Comment
  RSA110066  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1942-5-22 4541 Lassen Loyalton 1524 Comment
  SEINET10838317  Astragalus gibbsii Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2589 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and california hwy 36 to Susanville, near johnstonville. 1311 Comment
  RSA110067  Astragalus gilensis H. D. Ripley, R. C. Barneby 1944-5-29 5951 Lassen Container 1372 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  RSA111018  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 4300 Lassen West of Susanville 1310 Comment
  UC83864 Image available Astragalus inversus T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CHSC64785  Astragalus iodanthus var. diaphanoides Vernon H. Oswald 1995-5-24 6763 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1249 Comment
  CAS-BOT-BC229045  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  JEPS91412  Astragalus lemmonii Dean Wm. Taylor with Glenn Clifton 1990-6-12 10881 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  UC13384  Astragalus lemmonii M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC187156  Astragalus lentiginosus var. chartaceus John Thomas Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  JEPS97410  Astragalus lentiginosus var. floribundus Vernon H. Oswald 1995-6-19 6903 Lassen T30N R16E NW1/4 SE1/4 Sect. 2, 4740 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.5 mi e of Hwy. 395 1444 Comment
  SEINET5325521  Astragalus lentiginosus var. floribundus A. Tiehm 1980-1 5751 Lassen North end of Honey Lake Valley, 1 mile orth of Wendel. 1231 Comment
  UC13383  Astragalus lentiginosus var. floribundus L. T. Stephenson Sep 1897 Lassen Chat , Chat (Sierra Valley) Comment
  CHSC99508  Astragalus lentiginosus var. lentiginosus Lowell Ahart; John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber. 1268 Comment
  POM204048  Astragalus lentiginosus var. lentiginosus J. T. Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  POM26417  Astragalus lentiginosus var. lentiginosus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  CHSC71388  Astragalus lentiginosus var. salinus Vernon H. Oswald; B. Corbin, A. Sanger, G. Schoolcraft 1998-7-6 9247 Lassen East side of Eagle Lake on BLM land just east of the Lassen Youth Camp. 1584 Comment
  RSA0059601  Astragalus lentiginosus var. salinus Lowell Ahart, John Dittes 2011-6-20 17510 Lassen Near edge of the Ash Valley Road, 3,210 feet south of the Ash Creek Campground, about 6.5 (air) southeast of Adin. 1511 Comment
  CDA19719  Astragalus malacus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  POM45991  Astragalus malacus R. M. Austin 1897-05 400 Lassen Madaline plains. Comment
  RSA415816  Astragalus malacus Christopher Davidson 1975-6-7 2748 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1561919  Astragalus obscurus Barbara Ertter with Gary Schoolcraft 1987-6-16 7184 Lassen ridge w Hot Springs VABM (Skeedaddle Mountains on ne side Honey Lake); Skeedaddle Mountains, ne side Honey Lake, w of Hot Springs 2133 Comment
  SEINET4853425  Astragalus pulsiferae var. coronensis Unknown 2001-6-14 28158 Lassen E of Hwy 395, rd to Rams Horn Spring campground. 1540 Comment
  NY694125  Astragalus pulsiferae var. pulsiferae H. D. D. Ripley 1943-6-7 5499 Lassen East side of Beckworth Pass, south Lassen Co. 1494 Comment
  POM24228  Astragalus pulsiferae var. pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  RSA104884  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass. 1494 Comment
  RSA339984  Astragalus pulsiferae var. pulsiferae Noel Holmgren, Patricia K. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 1890 Comment
  SEINET5324574  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 -L-16 Lassen Burn area, W of Hwy 395 and Near Hwy 70. 1494 Comment
  CHSC5282  Astragalus purshii V. Holt 1944-7-9 Lassen Dow Butte. 2042 Comment
  NY678236  Astragalus purshii var. lectulus S. L. Welsh 2001-6-14 28157 Lassen East of Highway 395, road to Rams Horn Spring campground 1539 Comment
  CAS-BOT-BC194088  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Perkin's Ranch, top of Diamond Mt., Susanville 2225 Comment
  JEPS127726  Astragalus purshii var. purshii H. Chappel, K. Moran & K. Strassman 2002-6-27 ALT- 013 Lassen Pit River Valley/Beaver Creek BLM land Comment
  CAS-BOT-BC192973  Astragalus purshii var. tinctus Doris Kildale Gillespie 1930-5-13 9376 Lassen Between Susanville and Janesville Comment
  CHSC117211  Astragalus purshii var. tinctus Lowell Ahart; John Dittes 2016-6-7 20984 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS94605  Astragalus purshii var. tinctus Vernon H. Oswald and Lowell Ahart 1997-5-27 8517 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  POM16083  Astragalus purshii var. tinctus M. S. Baker 1894-7-9 s.n. Lassen Dixey Valley Comment
  UC13456  Astragalus purshii var. tinctus L. T. Stephenson Sept., 1897 Lassen Chat Comment
  RSA38443  Astragalus purshii var. tinctus P. A. Munz 1947-5-19 12269 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  HSC63892  Astragalus whitneyi Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak. 2378 Comment
  RSA639008  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 Lassen Bureau of Land Management land, Madeline Plains: SW of US Rt 395, SE of CR 515 (Termo road), S of BLM road 1614, and SW of Termo. Along jeep road to Schott Canyon. Comment
  CHSC68862  Astragalus whitneyi var. confusus Vernon H. Oswald; Lowell Ahart 1997-6-24 8634 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
  RSA517335  Astragalus whitneyi var. siskiyouensis Barbara J. Ertter, Gary Schoolcraft 1987-6-16 7183 Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  SEINET3025898  Astragalus whitneyi var. sonneanus Marcus E. Jones 1897-6-28 Lassen Top of Diamond Peak, Susanville. Perkin's Ranch. 2230 Comment
  JEPS94136  Athysanus pusillus Vernon H. Oswald and Lowell Ahart 1998-5-22 9130 Lassen ca. 5 mi. n.e. Doyle (rd. to Summit of Fort Sage Mts., 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  UC295904  Atriplex argentea H. M. Hall 1925-8-31 12215 Lassen Amedee Comment
  POM102968  Atriplex gardneri var. falcata Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET515855  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 Comment
  CHSC76092  Atriplex heterosperma Lowell Ahart; Vernon Oswald 1999-9-13 8204 Lassen On the west side of the dirt road and 1/4 mi south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  SEINET13710039  Atriplex triangularis Lowell William Ahart, Lowell William Ahart 1999-1 8209 Lassen Honey Lake Wildlife Area, 5.5 Mi SE Standish Comment
  CHSC100131  Atriplex truncata L. P. Janeway 2008-8-2 9528 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  RSA88586  Atriplex truncata J. T. Howell 1951-8-20 28226 Lassen Honey Lake Valley near Herlong 1280 Comment
  UC1136349  Atriplex truncata E. Sawyer 1935-6-27 217 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UC1037136  Avena fatua Leo Whitney 1935-5-27 3121 Lassen Bieber Comment
  JEPS103182  Balsamorhiza G. Schoolcraft 2000-4-26 2893 Lassen West of Grasshopper Valley 1706 Comment
  UCD129522  Balsamorhiza hirsuta G. Schoolcraft 2000-4-26 2891 Lassen Susanville, 1.8 miles west of Hwy 395 on Shaffer Mountain Road. 1554 Comment
  CHSC7646  Balsamorhiza hookeri Beverly J. Wise 1969-4-17 14 Lassen 1 mi north on Hwy 139. 1341 Comment
  JEPS1758  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi w of, along Hwy. 36 Fredonyer Pass 1752 Comment
  JEPS94113  Balsamorhiza hookeri Vernon H. Oswald and Lowell Ahart 1998-5-22 90889 Lassen Hwy. 36 between Fredonyer Summit and Susanville (0.4 mi. w. of the Susan R. & Bizz Johnston Trail) 1417 Comment
  UC1035988  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen 5 miles beyond Blue Lake on road to Likely. Warner Mountains, Modoc National Forest Comment
  CAS-BOT-BC106490  Balsamorhiza hookeri Ella Dales Cantelow 1941-5-22 3550 Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville Hwy #36 Comment
  RSA74324  Balsamorhiza hookeri var. lagocephala Milo S. Baker 1952-5-23 12432 Lassen Hwy. 36, 1/2 mi West of [Fredonyer] Pass 1752 Comment
  CHSC67158  Balsamorhiza hookeri var. lanata James D. Jokerst 1994-5-2 4040 Lassen N of Wendel, E of Hwy 395 and railroad, S end of Secret Valley. Comment
  SEINET10617205  Balsamorhiza incana Billy Joe Cox 1971-6-2 Cox 2985 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  CHSC7644  Balsamorhiza sagittata Beverley J. Wise 1969-5-20 32 Lassen West city limits of Susanville on Hwy 36. 1341 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
  UC485131  Balsamorhiza sagittata Franklin P. Nutting Lassen Big Valley Mts. Comment
  SEINET10617239  Balsamorhiza sagittata Billy Joe Cox 1971-6-2 Cox 3216 Lassen Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia. 1646 Comment
  SEINET10617243  Balsamorhiza sagittata Paul Gallian, David B. Dunn 1971-6-2 Gallian 500 Lassen Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia. 1646 Comment
  CAS-BOT-BC16435  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49464 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  NY119709  Barbarea orthoceras R. C. Rollins 1981-5-30 81165 Lassen Gold Run Road toward Sky Line Drive, 10 miles S of Susanville Comment
  CHSC76094  Bassia hyssopifolia Lowell Ahart 1999-9-13 8206 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
  CAS-BOT-BC145784  Beckmannia syzigachne Peter H. Raven; Otto T. Solbrig 1958-6-17 13262 Lassen United States Highway 395, 2.1 miles northeast of Standish. Comment
  RSA129087  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 miles E.S.E. of Susanville 1280 Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  UCD56798  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  NY526245  Betula glandulosa B. M. Bartholomew 1988-7-22 4500 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  HSC42543  Bidens cernua Barbara Kelly 1977-8-9 563 Lassen 15 miles east of Madeline on a dirt road from Adin Comment
  CAS-BOT-BC413001  Bistorta bistortoides A. A. Heller 1938-6-4 15141 Lassen 2 miles east of Westwood 1402 Comment
  CAS-BOT-BC413002  Bistorta bistortoides L. G. Bennett 1967-7-14 174 Lassen 5.3 miles from the junction of Highway 44 and the Silver Lake rd. on Highway 44 1950 Comment
  CAS-BOT-BC127954  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC127957  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC127972  Blepharipappus scaber Ella Dales Cantelow 1941-5-22 3551 Lassen U. S. Hy 395 n. of Litchfield 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
  RSA17718  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen South end of Secret Valley Comment
  UC1143001  Blepharipappus scaber August L. Hormay 1934-5-15 Lassen 1 mi n of Eldrigde's 1554 Comment
  UC1302428  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen s of Susanville (Gold Run Creek, Sierra Nevada Mountains); Sierra Nevada Mountains, Gold Run Creek Comment
  RSA152683  Blepharipappus scaber I. L. Wiggins, Dorothy Wiggins 1961-6-11 16355 Lassen Roadside east of Eagle Lake, 2 miles north of Susanville. Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  CAS-BOT-BC16826  Boechera Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16325 Lassen Along southern shore of Eagle Lake. 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
  CAS-BOT-BC14092  Boechera pauciflora John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50687 Lassen Sierra Nevada. South and southeast of Diamond Mountain. 2286 Comment
  CAS-BOT-BC14294  Boechera platysperma John Thomas Howell; Gordon H. True 1973-7-31 50040 Lassen Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak. 1737 Comment
  UC10162  Boechera platysperma M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CHSC101060  Boechera puberula John Dittes 2008-5-22 1532 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 350 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, volcanic outcrop on northeast side of Willow Creek. 485 Comment
  JEPS100335  Boechera puberula Dean W. Taylor 2001-7-19 17841 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  UC10179  Boechera puberula M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  UC1523799  Boechera rectissima Gary Schoolcraft 1981-8-7 610 Lassen near London lookout 1950 Comment
  CHSC68740  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1997-5-27 8495 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of a creek paralleling the road. 1546 Comment
  JEPS53086  Boechera retrofracta M. S. Baker and Frank Nutting 1894-7-5 Lassen mts s Dixie Valley Comment
  UC1126590  Boechera retrofracta A. Simontacchi 1940-5-13 699 Lassen 7.5 mi wsw Cone Ranch Hdq.; Lassen National Forest, Halls Flat Quad. 1920 Comment
  CHSC36477  Boechera sparsiflora Margaret E. Halloran 1982-6-6 12 Lassen Pine Creek just below fish trap where Pine Crek empties into Eagle Lake. Comment
  OBI48088  Boechera sparsiflora Rhonda Riggins 1989-4-27 1649 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line 1676 Comment
  UC1249280  Brodiaea coronaria subsp. coronaria Arthur Cronquist and Arthur H. Holmgren 1959-6-18 8485 Lassen 5 mi s Adin Comment
  UC60846  Bromus M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mountains Comment
  CHSC36110  Bromus briziformis George Deniso 1978-7-28 25 Lassen Lower Dry Lakes - SE shore area of Upper lake ca 4.5 km D of Miners Point, Eagle Lake. 1645 Comment
  JEPS45832  Bromus briziformis Duncan Dunning 1923-6-6 Lassen lava rocks below Ravendale Comment
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Jun 24 2009
  RSA0065493  Bromus briziformis Marion P. Harthill 1971-6-21 203 Lassen Susanville. Comment
  SEINET3921578  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8909 Lassen Vicinity of spring at fork to Painters Flat on east side of Oberservation Peak. 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance.; 0 1680 Comment
  CDA31386  Bromus carinatus var. carinatus D. R. Hill 1968-7-8 Lassen James R. Reynolds ranch, Revendale. 0 Comment
  UC1137778  Bromus carinatus var. carinatus August L. Hormay 1934-6-30 Lassen Lassen National Forest, Harvey Mountain, Lassen Forest and Range Experiment Station Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  CAS-BOT-BC149158  Bromus carinatus var. marginatus John Thomas Howell; Gordon H. True 1973-8-1 50199 Lassen Sierra Nevada. Ca. 3 miles southeast of Disamond Mountain. East slope of Diamond Range south of Susanville. 2194 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
  CAS-BOT-BC155941  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CHSC66419  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1996-6-17 7788 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  HSC22359  Bromus commutatus D. E. Anderson 1969-7-5 4991 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UC1037118  Bromus commutatus Leo Whitney 1934-7-22 2249 Lassen 5 mi w of lower end of Eagle Lake (Lassen National Forest, Antelope Mountain); Lassen National Forest, Antelope Mountain 1981 Comment
  UC1037137  Bromus diandrus Leo Whitney 1935-6-28 3371 Lassen Bieber Comment
  CDA1826  Bromus japonicus T. C. Fuller 1963-6-1 10626 Lassen East side of road to Susanville, 3.2 miles south of Pittville. 0 Comment
  JEPS123451  Bromus marginatus Wilson Collison, Jaileen Merced 2015-8-12 CA 320 -146 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  UC1131320  Bromus marginatus H. P. Hagge 1929-9-14 33 Lassen Logan Mountain 1828 Comment
  RSA0062688  Bromus subvelutinus Marion P. Harthill 1971-6-21 210 Lassen Susanville. Comment
  CAS-BOT-BC161575  Bromus suksdorfii John Thomas Howell; Gordon H. True 1973-8-1 50222 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2164 Comment
  CHSC36476  Bromus tectorum Margaret E. Halloran 1982-6-6 13 Lassen N of Eagle Lake Field Station on a point directly e of Pelican Pt. 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
  UC1024827  Bromus tectorum Leo Whitney 1935-7-12 3233 Lassen Lassen National Forest, Camp 10, Fruit Grower's Supply Company Lassen National Forest; , Camp 10, Fruit Grower's Supply Compa Comment
  UC1131267  Bromus tectorum H. S. Yates 1936-8-12 6085 Lassen McKenzie Meadow 1524 Comment
  UC1131328  Bromus tectorum A. Simontacchi 1940-5-28 783 Lassen 3.2 mi wsw of Patterson Mountain (Lassen National Forest); Lassen National Forest 1767 Comment
  SEINET10933521  Bromus tectorum var. glabratus Douglas G. LeDoux 1973-5-25 LeDoux 884 A Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  CAS-BOT-BC185001  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles west of Chester. Comment
  POM85831  Callitriche heterophylla var. bolanderi Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  POM312337  Callitriche verna Verne Grant, H. L. Mason 1947-7-9 13294 Lassen 5 miles E of Bieber. Comment
  UC1101514  Callitriche verna Verne Grant and Irving Schneider 1947-9-6 8385 Lassen creek midway between Eagle Lake and Susanville Comment
  UC1101519  Callitriche verna Herbert L. Mason and Verne Grant 1947-7-9 13294 Lassen 5 mi e Bieber Comment
  CAS-BOT-BC332740  Callitriche verna R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  CAS-BOT-BC80347  Calocedrus decurrens Ralph K. Gierisch 1968-7-12 3357 Lassen Lassen Forest, Hwy 36 1 mile east of Fredonyer Pass 1706 Comment
  SEINET10531060  Calocedrus decurrens Katherine L. Morris 1973-5-25 Morris 226 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  SEINET8196128  Calochortus coeruleus C. G. Gulling 1905-1 1535 Lassen Big Meadows. Comment
  CHSC4430  Calochortus leichtlinii K. R. Stern 1967-7-1 2473 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  UC3407  Calochortus leichtlinii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  POM253058  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen Along Highway 36 in the valley east of Fredonyer Pass Comment
  SEINET8197399  Calochortus macrocarpus M. J. Williams 1969-6-22 s.n. Lassen N of Litchfield. 1372 Comment
  UC3429  Calochortus macrocarpus Milo S. Baker 1894-7-21 Lassen Eagle Lake 1524 Comment
  CAS-BOT-BC175762  Caltha leptosepala A. M. Vollmer; L. Beane 1953-7-1 91 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  HSC63826  Calyptridium monospermum Teresa Prendusi 1980-7-1 Lassen Champs Flat, 7 mi. W of northern tip of Eagle Lake 1677 Comment
  UC851940  Calyptridium monospermum C. L. Hitchcock 1940-5-26 6608 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  CHSC30590  Calyptridium umbellatum Marc Held 1972-6-29 22 Lassen North end of Dean's Meadow. 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
  SD61074  Calystegia occidentalis subsp. occidentalis Darley F. Howe 1964-8-1 3915 Lassen Parsnip Creek, Modoc National Forest, Warner Mountains. 1830 Comment
  HSC30047  Camassia quamash subsp. breviflora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19197 Lassen Harvey Valley near Cone Springs Comment
  RSA32023  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles south of Westwood 1494 Comment
  CAS-BOT-BC36995  Camelina microcarpa James Jokerst 1983-5-31 61011 Lassen Near Madeline Plains. 1583 Comment
  OBI76938  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along hwy 395 ca. 6.6 mi S of Karlo Rd quad 1220 Comment
  NY608998  Camelina microcarpa G. Schoolcraft 1998-6-23 2737 Lassen Next canyon north of Ramhorn Springs Campground 1828.8 Comment
  POM38358  Camissonia andina Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  NY851231  Camissonia claviformis var. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale, on Highway 395 Comment
  CHSC64795  Camissonia contorta Vernon H. Oswald 1995-5-24 6781 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an insigned 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
  SEINET10903367  Camissonia pusilla David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17799 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentat, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  HSC30037  Camissonia tanacetifolia D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19153 Lassen 3 mi. N of Westwood Comment
  HSC63834  Camissonia tanacetifolia Teresa Prendusi 1980-5-16 Lassen 6 mi. S of Ravendale and 1 mi. W of Hwy. 395 Comment
  RSA125385  Camissonia tanacetifolia Arthur R. Kruckeberg 1954-6-22 3322 Lassen 6 miles south of Likely along Highway 395 Comment
  CAS-BOT-BC160859  Camissonia tanacetifolia subsp. tanacetifolia A. M. Vollmer; L. Beane 1953-7-1 41 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  RSA339989  Camissonia tanacetifolia subsp. tanacetifolia Noel Holmgren, Patricia K. Holmgren 1980-7-3 9477 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
  CAS-BOT-BC160862  Camissonia tanacetifolia subsp. tanacetifolia Hans Leschke 1963-8-28 1870 Lassen Lassen Volcanic National Park. South shore of Snag Lake 1856 Comment
  RSA186587  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  UC1137752  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  UC773929  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  CAS-BOT-BC37244  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49478 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC197292  Cardamine breweri Franklin P. Nutting Lassen Pine Creek Comment
  RSA592547  Cardamine breweri var. breweri S. O. Mattoon 1978-7-10 24 Lassen Lassen County, Blue Lake Camp Ground: 17 miles E of Likely, Southern Warner Mtns, Modoc N Fork. 1890 Comment
  UC972184  Cardamine nuttallii Milo S. Baker 1952-5-23 12430 Lassen Highway 36 1/2 mi w Fredonyer Pass; w of Fredonyer Pass 1752 Comment
  CHSC99732  Cardamine oligosperma Lowell Ahart; John Dittes 2008-6-20 14942 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  CDA3650  Cardaria draba G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2801 Lassen 7.2 miles (11.6 km) north of Termo, 7.1 miles south of Madeline, east side of Madeline Plain. Comment
  CAS-BOT-BC18287  Carex John Thomas Howell; Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road, south of Susanville. 1584 Comment
  UC1137782  Carex August L. Hormay 1934-5-14 Lassen Gray's Flat Well Lassen National Forest 1706 Comment
  CHSC85988  Carex abrupta L. P. Janeway 2003-7-24 7918 Lassen High Cascade Range. Small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  CHSC112416  Carex angustata Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18769 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
  CHSC58858  Carex angustata Vernon H. Oswald; Lowell Ahart 1992-7-16 5115 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  SEINET7549702 Image available Carex angustata George W. Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake. 1850 Comment
  CAS-BOT-BC18103  Carex athrostachya John Thomas Howell 1934-7-7 12472 Lassen Pine Creek Flat. Comment
  CAS-BOT-BC18107  Carex athrostachya James Stokes 1939-6-15 s.n. Lassen Bullard Lake west of Grasshopper Valley. Comment
  UC50815  Carex athrostachya J. Burtt Davy Jun 17-24 1897 3298 Lassen Honey Lake Valley, slough near Dr. Witt's Comment
  POM313130  Carex athrostachya H. L. Mason 1947-7-9 13300 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  CHSC61064  Carex aurea Vernon H. Oswald; Lowell Ahart 1993-8-3 5742 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC66412  Carex aurea Vernon H. Oswald; Lowell Ahart 1996-6-17 7814 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  JEPS87494  Carex aurea Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  JEPS107458  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 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
  JEPS94477  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8502 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling road); Forest Route 38N04 1546 Comment
  UC1776677  Carex douglasii G. Schoolcraft 1995-5-22 2486 Lassen East of Skedaddle Ranch 1554 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
  JEPS87492  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
  SEINET7558599 Image available Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  UCD37482  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Lassen National Forest, 6 miles north of Bogard Ranger Station, Harvey Valley. 1676 Comment
  CAS-BOT-BC21305  Carex fracta John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49451 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  JEPS28382  Carex heteroneura George W. Gillett 1957-7-28 937 Lassen along s margin, Widow Lake Lassen Volcanic National Park, Widow Lake 2072 Comment
  CHSC85990  Carex heteroneura var. heteroneura L. P. Janeway 2003-7-24 7915 A Lassen High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  HSC48184  Carex hoodii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19242 Lassen 2 mi. N of Westwood Comment
  UC2031875  Carex hoodii Nick Otting and Bruce Newhouse 2003-7-15 705 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 air miles south-southwest of Susanville. Comment
  CHSC96442  Carex interior Gordon Leppig 1998-7-12 954 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
  UC1609339  Carex lasiocarpa Vernon H. Oswald and Lowell Ahart 1993-8-3 5752 Lassen e Silver Lake (nw part of the swamp, just e of the Caribou Wilderness, ca. 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
  HSC95193  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 528 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC59187  Carex multicaulis Vernon H. Oswald; Lowell Ahart 1992-9-15 5217 Lassen Lassen Volcanic National Park. Ca. 0.3 mi SW of Island Lake, on the NW foot of Bonte Pk., ca. 1.5 mi E of Juniper Lake campgrounds. 2133 Comment
  CHSC87113  Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  CHSC29957  Carex multicostata Robin L. Ondricek 1978-6-27 78 Lassen On Coleman Lake Rd., .7 mi ne of Lassen Co. Rd. A1. 1950 Comment
  CAS-BOT-BC119043  Carex pellita George Wilson Gillett 1957-7-26 906 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CHSC85980  Carex pellita L. P. Janeway 2003-7-24 7919 Lassen High Cascade Range. In middle of small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  SEINET10585735  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 Ahart 17477 Lassen T38N, R10E, center of north 1/2 Section 22. About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1521 Comment
  UCD55306  Carex praegracilis Ellen Dean; Gary Schoolcraft 2006-5-16 3135 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  CHSC53660  Carex rossii L. P. Janeway; Oscar V. Janeway, Lillian D. Janeway 1987-5-27 2101 Lassen Near S end of Eagle Lake. Along Eagle Lake Rd at jct with road to Pikes Pk. 1569 Comment
  HSC103634  Carex scopulorum var. bracteosa Thomas W. Nelson, Jane Nelson 1985-8-10 8028 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  JEPS114623  Carex sheldonii Lowell Ahart, John Dittes 2008-6-22 15045 Lassen High dry bank of a levee, north of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.5 miles (air) northeast of Bieber 1267 Comment
  CHSC66414  Carex simulata Vernon H. Oswald; Lowell Ahart 1996-6-17 7815 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Margin of a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  HSC95227  Carex simulata Gordon Leppig 1998-7-12 953 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS28384  Carex subfusca George W. Gillett 1957-7-26 911 Lassen lake shore near ne arm of Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  HSC95273  Carex vesicaria Gordon Leppig 1998-7-12 942 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95282  Carex vesicaria Gordon Leppig 1998-6-12 932 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC103632  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8027 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  HSC48217  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19237 Lassen 2 mi. N of Westwood Comment
  RSA275376  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  RSA298353  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  UCD123074  Castilleja Grady L. Webster 1989-5-13 7711 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CHSC67068  Castilleja applegatei Willis Ball 1969-6-20 20 Lassen Found approx. 2 mls. down from Dean's Meadow going towards 5 pts. 1828 Comment
  CAS-BOT-BC249618  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-20 44 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  CAS-BOT-BC249619  Castilleja applegatei subsp. pinetorum Alice Eastwood; John Thomas Howell 1940-6-15 8326 Lassen Grasshopper Valley Comment
  CHSC30598  Castilleja applegatei subsp. pinetorum Marc Held 1972-6-29 19 Lassen 3 miles from Dean's Meadow, towards 5 points, off road side. Comment
  CHSC60412  Castilleja applegatei subsp. pinetorum Mary Ann Showers 1992-6-13 2538 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  CHSC7751  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-3 106 Lassen 28.4 mi. N.E. of Susanville. 1554 Comment
  JEPS118213  Castilleja applegatei subsp. pinetorum Dean W. Taylor 2004-5-14 19068 Lassen Ash Valley, County Road 527 (Forest Road 39N08) ca. 0.5 miles South of crossing of Ash Creek 1539 Comment
  SEINET10818435  Castilleja applegatei subsp. pinetorum Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 152 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  UCD170229  Castilleja applegatei subsp. pinetorum K. M. Meyer; A. Townesmith 2007-7-23 152 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  JEPS28820  Castilleja arachnoidea Frances Payne 1929-7-12 83 Lassen between Camp 1 and Lost Lake (s end of Warner Range, e slope); Warner Range 2286 Comment
  JEPS66447  Castilleja campestris subsp. campestris L. R. Heckard and P. Rubtzoff 1971-8-4 2708 Lassen about 10 mi n Termo (along U.S. Hwy 395) Comment
  UC1609193  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  UCD55264  Castilleja chromosa Ellen Dean 2006-5-15 3062 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  JEPS126474  Castilleja linariifolia Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-8-10 CA 350 -067 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  JEPS79327  Castilleja linariifolia T. C. Fuller 1980-8-5 20313 Lassen 7.4 km se Dodge Reservoir campground (along e side of Tuledad Road, on the e shore of Dodge Reservoir, ne of Ravendale) Comment
  UC1542951  Castilleja linariifolia G. Schoolcraft 1987-9-1 1771 Lassen s side near top Observation Mtn. 2346 Comment
  JEPS10806  Castilleja miniata Brown and Wieslander 1922-7-23 67 Lassen Martin Springs; Eagle Lake Comment
  JEPS62629  Castilleja miniata Clare B. Hardham 1969-8-28 17424 Lassen w of Janesville; Sierra Nevada Comment
  CAS-BOT-BC244889  Castilleja miniata Alice Eastwood 1912-8-22 1893 Lassen Battle Creek meadows. Lassen Butte Region. Comment
  CDA18277  Castilleja minor var. minor G. D. Barbe 1974-8-2 1943 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CHSC68768  Castilleja pilosa Vernon H. Oswald; Lowell Ahart 1997-5-27 8489 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  HSC82214  Castilleja pilosa Thomas W. Nelson, Jane P. Nelson 1980-7-6 5995 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  CHSC5911  Castilleja tenuis J. B. Kimsey 1946-6-20 Lassen Grasshopper Valley. 1615 Comment
  CHSC66263  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1996-6-24 7841 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC93698  Castilleja tenuis Lowell Ahart; John Dittes 2005-6-2 11962 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
  JEPS114693  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-20 14944 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS121270  Castilleja tenuis Lowell Ahart 2013-7-22 18840 Lassen W margin of duck field, about 30 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  UC1523759  Castilleja tenuis Gary Schoolcraft 1982-6-21 714 Lassen Ash Valley 1584 Comment
  NY608461  Caulanthus major var. nevadensis G. Schoolcraft 1981-7-15 510 Lassen Near top of Fredonyer Peak along lookout road. 2377.4 Comment
  POM85246  Ceanothus cordulatus Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CAS-BOT-BC52055  Ceanothus prostratus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16317 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  CHSC5069  Ceanothus prostratus D. L. Stites 1967-7-1 111 Lassen On Black Mt. 5 mi s of Eagle Lake Biology Station. 1828 Comment
  UC506913  Ceanothus prostratus George A. Fischer, Irwin H. Johnson 1933-2-14 F- 263 Lassen Lassen National Forest 1767 Comment
  UC1736108  Ceanothus prostratus var. prostratus Dean W. Taylor 1974-7-13 4067 Lassen Lassen National Forest, Thousand Lakes Wilderness, vicinity of Magee Pk, T33N R3E SE1/4 Sect. 27 2484 Comment
  CAS-BOT-BC272110  Centaurea cyanus Margaret Williams; Steven Williams 1974-7-26 74 -L-9 Lassen Near Hallelujah Junction west of Why 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  CDA7251  Centaurea maculosa T. C. Fuller 1962-8-28 9472 Lassen West side of Highway 395, 1.7 miles south of Doyle. 0 Comment
  CDA35515  Centaurea squarrosa CDFA Staff 1986-6-18 s.n. Lassen Near Nubieber, off Hwy 299. 0 Comment
  CAS-BOT-BC281208  Centaurea stoebe subsp. micranthos Lee E. Wheeler 1962-8-15 s.n. Lassen Doyle area Comment
  CAS-BOT-BC106028  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 12 Lassen Roadside and fields Cramer Ranch, Big Valley Comment
  RSA153397  Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley Comment
  SEINET13331314 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  JEPS102715  Centaurium exaltatum Vernon H. Oswald 2001-9-26 10057 Lassen Dakin Unit of Honey Lake Wildlife Area. 1219 Comment
  JEPS46972  Centaurium exaltatum W. L. Jepson 1918-8-2 7759 Lassen Beckwith Pass 1463 Comment
  CHSC93679  Centaurium tenuiflorum Lowell Ahart; John Dittes 2005-6-2 11977 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  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-BC388152  Cerastium fontanum Louella Bass 1973-6-3 90 Lassen Elysian Valley. West side of Ridge Meadow 1325 Comment
  UC956838  Ceratophyllum demersum Verne Grant and Irving Schneider 1947-9-6 8384 Lassen Creek midway between Eagle Lake and Susanville; creek midway between Eagle Lake and Susanville Comment
  UC1523792  Cercis occidentalis Gary Schoolcraft 1981-6-9 447 Lassen w Nubieber 1280 Comment
  SDSU8985  Cercocarpus betuloides D. F. Howe 1961-8-4 3134 Lassen 11.5 miles east of McArthur on US 299. 1372 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
  JEPS28675  Cercocarpus ledifolius var. ledifolius George W. Gillett 1957-7-26 902 Lassen Butte Lake, Lassen Volcanic National Park Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  JEPS112814  Chaenactis douglasii Dean W. Taylor 1974-6-14 3723 Lassen Plumas National Forest; Janesville Grade Road, at summit ca. 4 mi SSW of Janesville 1706 Comment
  CHSC23518  Chaenactis douglasii var. douglasii Wayne O. Baum 1971-7-6 71 -50 Lassen Slope of Gallatin Peak. 2011 Comment
  CHSC93690  Chaenactis douglasii var. douglasii 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
  UC1136776  Chaenactis douglasii var. douglasii L. R. Short and Wm. Gansberg 1946-7-9 S- 480 Lassen Burgess Spring Experimental Range Lassen Forest, Burgess Spring Experimental Range 1804 Comment
  UC90118  Chaenactis douglasii var. douglasii unknown 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC276612  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-25 3755 Lassen Susanville, just W of town 1300 Comment
  CHSC21172  Chamaebatiaria millefolium M. S. Taylor 1975-5-4 220 Lassen Ca. 1/4 mi e of Eagle Lake Field Station, ca. 13 mi ne of Susanville. Comment
  SEINET10937236  Chamaebatiaria millefolium Mary Susan Taylor 1974-5-4 Taylor 220 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
  JEPS5990  Chamaesaracha nana Frances D. Payne 1929-7-12 77 Lassen near Lost Lake (camp 1, se extremity of Warner Mountains); Warner Mountains 2286 Comment
  JEPS97305  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and L. Ahart 1995-8-14 7178 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
  UC1609091  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and Lowell Ahart 1993-7-8 5660 Lassen 1.9 mi n Hwy 44 (Pittville Rd., on se edge of lake, between the rr and the lake); Poison Lake 1709 Comment
  JEPS52348  Chamaesyce serpyllifolia W. L. Jepson 1918-8-2 7762 Lassen Beckwith Pass 1463 Comment
  JEPS128409  Chamerion angustifolium subsp. circumvagum Catherine Bauer with Ellen Bauer Benson 2017-8-16 17 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC62593  Cheilanthes intertexta Baker and Nutting 1894-7-3 Lassen Dixey Mts Comment
  RSA756354  Chenopodium Barbara Ertter 1987-7-24 7301 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  RSA233736  Chenopodium botrys R. F. Thorne, C. W. Tilforth 1969-9-6 39259 Lassen along Long Valley Creek, c. 14 mi. SE of Milford. 1311 Comment
  UC1587041  Chenopodium fremontii G. Schoolcraft 1991-7-31 2206 Lassen just s of Shinn Peak 2103 Comment
  CAS-BOT-BC426337  Chenopodium nitens John Thomas Howell 1934-7-10 12543 Lassen Patterson Flats Comment
  UC1483860  Chimaphila menziesii G. Schoolcraft 1980-7-15 311 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  UCSB17200  Chorizanthe watsonii Hardham, Clare 1961-6-17 Lassen Baxter Cr. south of Susanville, Sierra Nevada Mountains 1524 Comment
  CAS-BOT-BC36276  Chrysolepis sempervirens Cain C. Brighton 1925-8-24 95 Lassen Mt. Lassen Volcanic National Park, 1 mi below Drakesbad 1645 Comment
  CAS-BOT-BC36325  Chrysolepis sempervirens George W. Gillett 1957-7-26 905 Lassen Point of rocks wets of Butte Lake outlet and above trail 1844 Comment
  CDA38208  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CDA38209  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  SEINET10940912  Cirsium Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 475 Lassen Approx. 2 mi. N of Susanville, across Calif. Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  UCR67462  Cirsium arvense George K. Helmkamp 1990-9-23 A- 01 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CDA1125  Cirsium canescens T. C. Fuller 1962-8-28 9479 Lassen 0.25 mi n. of Termo, Madelaine Plains; roadside, Hwy 395 to Madelaine. 0 Comment
  SD113205  Cirsium cymosum Darley F. Howe 1964-7-31 3947 Lassen Near east bank of Blue Lake, Warner Mountains, Modoc National Forest. 1890 Comment
  UCD21445  Cirsium douglasii Don Lancaster 2002-9-1 s.n. Lassen Blue Lake. Comment
  CDA1257  Cirsium inamoenum T. C. Fuller 1959-7-7 2739 Lassen Rocky hillside by Hwy 395, 6 mi N/ road to Karlo. Comment
  CDA1526  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1527  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  RSA186832  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CDA1519  Cirsium ochrocentrum var. ochrocentrum Lee Wheeler 1952-8-29 s.n. Lassen Honey Lake Clarence Hoffman Ranch (near Janesville Grade/ Parker Creek?) 0 Comment
  CHSC23510  Cirsium vulgare Wayne O. Baum 1971-7-6 71 -56 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC439005  Cistanthe monosperma Jeanne Janish; Carl Janish 1938-9-6 s.n. Lassen Near Summit Lake, Lassen National Park. 2042 Comment
  CAS-BOT-BC233914  Cistanthe umbellata Carl B. Wolf 1929-9-1 3788 Lassen Mt. Lassen National Park, between Grassy and Snag Lakes Comment
  CAS-BOT-BC233917  Cistanthe umbellata G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC172038  Clarkia gracilis subsp. gracilis Louella Bass 1973-5-29 EV 79 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  UC930728  Clarkia purpurea subsp. quadrivulnera C. L. Hitchcock 1940-5-26 6624 Lassen 2 mi w Fall River Mills 1341 Comment
  JEPS96107  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1996-6-17 7780 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side Hwy. 36 between trail & hwy. spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  CHSC83619  Clarkia stellata L. P. Janeway 2001-6-28 7233 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  SEINET5336402  Claytonia perfoliata subsp. intermontana J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin CA. Comment
  UC2013401  Claytonia rubra Debra Valov 2011-6-16 1113 Lassen Bieber; off County A2 c. 8 km east of Highway 299. 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
  CHSC99500  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2008-6-20 14910 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC34942  Claytonia rubra subsp. rubra P. Fehr 1974-4-24 4 Lassen Ca. 1.75 mi n of junction of Cherry Terrace and Piute Creek, Susanville. 1219 Comment
  POM102012  Claytonia rubra subsp. rubra Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  JEPS79145  Cleome platycarpa L. R. Heckard with R. Bacigalupi 1980-6-11 5248 Lassen 11.3 mi. n. Litchfield (along U.S. 395, s. of Deep Creek crossing) 1463 Comment
  NY222755  Cleome platycarpa H. D. D. Ripley 1943-6-15 5757 Lassen Near Viewland. 1310.6 Comment
  CAS-BOT-BC423225  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  JEPS48621  Cleomella plocasperma Hilda W. Grinnell 1934-6-3 Lassen Amedee 1219 Comment
  SEINET5767254  Cleomella plocasperma D. S. Mapes 1942-7-13 s.n. Lassen 2 1/2 miles SW of Wendel, Honey Lake Basin 1067 Comment
  CHSC23569  Collinsia parviflora W. O. Baum 1971-7-6 38 Lassen E slope of Gallatin Peak. 1950 Comment
  CHSC80278  Collinsia parviflora Jeanne Boze 1981-6-13 112 Lassen Northeast base of Gallatin Peak. 1950 Comment
  JEPS114656  Collinsia parviflora Lowell Ahart, John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA0059629  Collinsia parviflora Lowell Ahart, John Dittes 2011-6-20 17487 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  RSA128300  Collinsia torreyi Peter H. Raven, Otto T. Solbrig 1958-6-16 13249 Lassen 4.5 miles east of Westwood on Hwy 36. Comment
  UC1143017  Collinsia torreyi var. latifolia August L. Hormay 1934-6-30 Lassen Lassen National Forest, Harvey Mountain Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  CHSC23513  Collomia grandiflora Wayne O. Baum 1971-7-19 71 -77 Lassen E. slope of Gallatin Peak. 2042 Comment
  CHSC30572  Collomia grandiflora Sori H. Shad 1970-7-1 33 Lassen Found 3/4 mile past Murrer's. Meadow near edge of road. 1524 Comment
  CHSC4440  Collomia grandiflora K. R. Stern 1967-6-30 2450 Lassen West central side of Eagle Lake. 1554 Comment
  HSC16917  Collomia grandiflora Jim Vaughn 1956-7-25 Lassen Drakesbad 1738 Comment
  SJSU11426  Collomia grandiflora V. Hardham 1965-7-12 130 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139 1524 Comment
  CHSC25914  Collomia tinctoria K. R. Stern 1967-7-1 2470 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  CHSC92760  Collomia tinctoria L. P. Janeway 2005-7-4 8468 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC1037277  Collomia tinctoria Leo Whitney 1934-7-22 1749 Lassen 6 mi w lower end of Eagle Lake; Lassen National Forest, Antelope Mountain 1981 Comment
  UC773938  Collomia tinctoria L. R. Short and J. Warren 1936-6-10 S- 382 Lassen Burgess Spring Experimental Range Lassen <National> Forest (timbered slopes) 1789 Comment
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Jun 17 2011
  CHSC66260  Comarum palustre Vernon H. Oswald; Lowell Ahart 1996-6-24 7891 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 springs on the E side of the meadow. 1633 Comment
  UC1924220  Convolvulus arvensis Debra Valov 2004-6-8 2004255 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  JEPS124870 Image available Convolvulus arvensis Laurel Loeblich 1964-6-30 56 -2 Lassen 3 miles north of Hallelujah Junction (highways 40 and 395) on 395. Great Basin flora; pinion pine - juniper- sagebrush. Comment
  JEPS121058 Image available Convolvulus occidentalis subsp. occidentalis Lynne C. Carter 1967-7-12 92 Lassen 6 miles east of Lassen + Shasta County line on Hwy 299, at Lookout over Fall River Valley. Comment
  JEPS107824  Conyza canadensis Lowell Ahart, John Dittes 2005-6-2 11974 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
  POM43083  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CAS-BOT-BC212205  Cornus sericea Louella Bass 1973-5-29 EU 85 Lassen Elysian Valley 1325 Comment
  CHSC75453  Crepis acuminata Vernon H. Oswald; Lowell Ahart 1999-6-9 9742 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  CHSC93564  Crepis acuminata Lowell Ahart; John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  POM17703  Crepis acuminata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC581282  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2313 Lassen about 1 mi below summit; Black Mountain 1940 Comment
  UC773983  Crepis acuminata L. R. Short 1936-7-9 S- 509 A Lassen Burgess Spring Experiment Range Lassen <National> Forest 1818 Comment
  CAS-BOT-BC290392  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2294 Lassen South slope Thompson Peak, south of Janesville 2133 Comment
  CAS-BOT-BC291547  Crepis intermedia Margaret Williams 1974-8-4 74 -L-76 Lassen Near Hallelujah Junction west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  JEPS87521  Crepis modocensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5614 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  UC540867  Crepis occidentalis David D. Keck and J. Clausen 1935-6-24 3752 Lassen 2 mi s Ravendale 1463 Comment
  UC581290  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2302 Lassen w Milford (crest or range head of ridge); Stony Ridge 1930 Comment
  SEINET7838833 Image available Crepis occidentalis N. H. Holmgren, P. K. Holmgren 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-south of Ravendale. 1707 Comment
  CAS-BOT-BC290749  Crepis occidentalis subsp. occidentalis G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-8 2218 Lassen Six miles south of Ravensdale 1676 Comment
  SEINET3158253  Cressa cretica M. E. Jones 1897-6-23 sn Lassen Amedee 1219 Comment
  UC1542943  Crocidium multicaule G. Schoolcraft 1987-4-29 1686 Lassen Ash Valley RNA 1554 Comment
  UCD59992  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  CHSC68849  Cryptantha Vernon Oswald; Lowell Ahart 1997-6-24 8593 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  CHSC106071  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
  CHSC7765  Cryptantha circumscissa Beverly J. Wise 1969-5-18 77 Lassen 17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  JEPS107310  Cryptantha circumscissa Lowell Ahart, John Dittes 2005-6-1 11890 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  JEPS94827  Cryptantha circumscissa Vernon H. Oswald and Lowell Ahart 1998-5-22 9135 Lassen 3.5 mi n of Doyle (Fort Sage Road 2.3 mi n of Hackstaff Road); Fort Sage Road 1341 Comment
  HSC63772  Cryptantha flavoculata Teresa Prendusi 1980-5-22 1125 Lassen Shaffer Mtn. near top 2012 Comment
  SJSU11363  Cryptantha glomeriflora J. W. Tilden 1960-6-27 1494 Lassen Westwood 1524 Comment
  UC584347  Cryptantha humilis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2267 Lassen sw of Diamond Mt. (s of Susanville) 2164 Comment
  JEPS124572 Image available Cryptantha intermedia var. grandiflora S. Hardinghaus 1967-7-11 167715 -114 Lassen 6 mi. S. of Eagle Lake where meets Hw 139 at west shore, on Hwy 139. Comment
  JEPS103198  Cryptantha simulans G. Schoolcraft 1993-6-29 2305 Lassen Ash Valley RNA 16 miles E of Adin S of T in Co. Road 1554 Comment
  UC1587053  Cryptantha torreyana G. Schoolcraft 1991-7-30 2193 Lassen e side Widow Mountain 1889 Comment
  UC402818  Cryptantha torreyana Milo S. Baker Jul 1912 Lassen Pine Creek Comment
  UC1584020  Cryptantha watsonii G. Schoolcraft 1990-6-12 2089 Lassen about 17 mi e Ravendale (in Pine Dunes RNA) 1706 Comment
  CHSC76827  Cupressus bakeri L. P. Janeway; B. Castro, Loren Gehrung 1999-10-10 6595 B Lassen High cascade Range. Near Eiler Creek between Fraener Peak and Horse Heaven Buttes; about 0.2 mi southeast of Cypress Trailhead in to Thousand Lakes Wilderness Area. 1658 Comment
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May 17 2007
  OBI75868  Cuscuta occidentalis Anthony Baniaga 2011-8-9 492 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
  NY704022  Cusickiella douglasii N. H. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale 1700 Comment
  UC473500  Cycladenia humilis var. humilis A. N. Kramer 1930-1 15 Lassen Prospect Peak Lassen National Park Comment
  UC1567429  Cyperus squarrosus G. Schoolcraft 1989-7-24 1994 Lassen along n. shore Said Valley Reservoir 1630 Comment
  UC4436  Cypripedium californicum Mrs. R. M. Austin 1882-1 Lassen Mt. Dyer Comment
  POM121177  Cystopteris fragilis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET230899 Image available Dalea ornata Arnold Tiehm, Raymond Evans: James Young 1984-6-7 8592 Lassen Flats on the Northwest side of Shaffer Mountain, 7.5 air miles North-northwest of Litchfield. 1372 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
  UC1100145  Damasonium californicum Malcolm A. Nobs, Calvin McMillan 1949-6-15 784 Lassen Nubieber Comment
  UC1731161  Damasonium californicum Dean W. Taylor 1974-6-14 3714 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd. Poison Lake; Modoc Plateau 1615 Comment
  UC527  Damasonium californicum J. Burtt Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  RSA0011557  Damasonium californicum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  HSC68921  Danthonia californica Gary Schoolcraft 1980-7-28 329 Lassen E of Tule Mountain and S of Blue Lake. 2043 Comment
  CHSC66281  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1996-6-24 7839 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  UC506937  Danthonia californica var. americana George A. Fischer and Irwin H. Johnson 1933-7-12 F 236 Lassen Patterson Flat Lassen National Forest 1737 Comment
  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
  UCD61291  Danthonia unispicata Beecher Crampton 1964-6-25 7069 Lassen 25 miles NW of Susanville, State Hwy. 44, Bogard Ranger Station, Lassen National Forest, meadow of Pine Creek Valley. 1722 Comment
  CHSC48859  Dasiphora fruticosa Vernon Oswald 1986-8-7 2270 Lassen Hwy 36, 12.6 mi e of the Lassen-Plumas County line, 0.8 mi e of Fredonyer Pass. Roadcut. 1706 Comment
  CAS-BOT-BC291777  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CHSC106589  Delphinium andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC106590  Delphinium andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC71132  Delphinium andersonii Vernon H. Oswald; Lowell Ahart 1998-5-22 9125 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  JEPS94118  Delphinium andersonii Vernon H. Oswald and Lowell Ahart 1998-5-22 9125 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts., 2.2 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  JEPS6109  Delphinium nudicaule A. A. Heller 1938-6-4 15149 Lassen E of Fredonyer Pass, Lassen Co. Comment
  UC726275  Delphinium nudicaule A. A. Heller 1940-5-22 15663 Lassen hill back of Westwood Cemetery (station several mi w of type station) Comment
  CAS-BOT-BC217303  Delphinium nudicaule Elmer Ivan Applegate 1935-6-10 9478 a Lassen Lava Beds National Monument. S base of Caldwell Butte. Comment
  RSA398661  Delphinium nudicaule Christopher Davidson 1975-6-6 2722 Lassen 3.9 miles from jct of county roads 204 and 205 on road 204 along Gold Run Creek, SW of Susanville. 1395 Comment
  CAS-BOT-BC116468  Delphinium nuttallianum A. A. Heller 1938-6-4 s.n. Lassen ...about 2 miles south of Westwood 1463 Comment
  NY492431  Delphinium stachydeum G. Schoolcraft 1983-8-3 1123 Lassen About 2 miles south of Holbrook Canyon 1828.8 Comment
  CAS-BOT-BC194258  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1943-7-10 49769 Lassen Near Westwood - Sierra Nevada 1554 Comment
  CAS-BOT-BC194259  Deschampsia cespitosa subsp. cespitosa Ray Hanson 1954-8-23 s.n. Lassen Near Jackey Lake 2112 Comment
  CAS-BOT-BC194261  Deschampsia cespitosa subsp. cespitosa John Thomas Howell; Gordon H. True 1973-8-1 50230 Lassen Headwaters of Boxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  CAS-BOT-BC194262  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1959-9-23 34888 Lassen Juniper Lake north end, Lassen Park 2057 Comment
  RSA126933  Deschampsia cespitosa subsp. cespitosa G. A. Fischer, I. H. Johnson 1933-7-14 F- 244 Lassen Patterson Flat 1738 Comment
  UC1137794  Deschampsia cespitosa subsp. cespitosa George A. Fischer and Irwin H. Johnson 1933-7-15 F 244 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  CAS-BOT-BC192740  Deschampsia danthonioides A. A. Beetle 1941-6-28 2799 Lassen 10 miles west of Chester Comment
  UCD61402  Deschampsia danthonioides L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  UCD61878  Deschampsia danthonioides A. A. Beetle 1941-6-28 2799 Lassen 10 miles W of Chester. 1524 Comment
  UCD62514  Deschampsia danthonioides L. Whitney 1935-6-20 3251 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UCD62516  Deschampsia danthonioides L. Whitney 1935-5-27 3124 Lassen Bieber. Comment
  UCD62833  Deschampsia danthonioides Malcolm A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles N of Madeline. Comment
  CAS-BOT-BC201811  Deschampsia elongata John Thomas Howell; Gordon H. True 1973-7-31 50034 Lassen On road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  CHSC7706  Descurainia incana Beverley J. Wise 1969-4-29 38 Lassen 3.4 mi. north of Susanville on Rnd Valley Rd off Hwy 139. 1371 Comment
  CAS-BOT-BC42987  Descurainia incisa subsp. incisa A. M. Vollmer; L. Beane 1953-7-1 13 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur. 1554 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
  UC1126907  Descurainia pinnata A. Simontacchi 1940-6-4 808 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1783 Comment
  JEPS108556  Descurainia pinnata subsp. halictorum L. P. Janeway 2005-7-4 8466 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41 1752 Comment
  CAS-BOT-BC43486  Descurainia sophia James Jokerst 1983-5-31 1790 Lassen Near Madeline Plains. 1583 Comment
  SD8289  Dicentra formosa Mrs. R. M. Austin Aug 1882 Lassen Comment
  UC1609183  Dicentra uniflora Vernon H. Oswald and Lowell Ahart 1993-5-12 5374 Lassen 0.9 mi nw Highway 44 intersection with A21 (to Westwood) (sw side of Highway 44) 1737 Comment
  CAS-BOT-BC402570  Dicentra uniflora Duncan Dunning 1922-5-15 s.n. Lassen Lassen National Forest. Facht - Robber Creek 1524 Comment
  CAS-BOT-BC502558  Dichelostemma congestum A. M. Vollmer; L. Beane 1953-7-1 95 Lassen Along Halls Flat road, beginning 6 mi W of Susanville to McCarthur 1554 Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  CHSC45007  Dieteria canescens var. shastensis Lowell Ahart; John Thomas Howell 1974-7-9 539 Lassen Near the south edge of Eagle Lake. 1584 Comment
  UC86846  Dieteria canescens var. shastensis T. S. Brandegee Lassen Comment
  CAS-BOT-BC153673  Diplacus mephiticus Clare B. Hardham s.n. Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC153676  Diplacus mephiticus Alice Eastwood; John Thomas Howell 1940-6-15 8325 Lassen Grasshopper Valley Comment
  CAS-BOT-BC153680  Diplacus mephiticus H. D. Ripley; R. C. Barneby 1944-5-22 5956 Lassen South of Janesville 1280 Comment
  CHSC5907  Diplacus mephiticus R. Gein 1946-6-12 Lassen Pine Creek bridge. 1584 Comment
  CHSC91183  Diplacus mephiticus Lowell Ahart; John Dittes 2005-6-1 11869 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
  SBBG66659  Diplacus mephiticus S. W. Hutchinson -Jun-1925 Lassen near Eagle Lake Comment
  SEINET13702844  Diplacus mephiticus G. Schoolcraft 1980-5-7 225 B Lassen Honey Lake Island. 1219 Comment
  SEINET13703366  Diplacus mephiticus F. B. Headley 1915-5-28 13 Lassen Honey Lake. Comment
  SEINET201638 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8454 Lassen 25 mi NW of Reno Comment
  SEINET13703699  Diplacus mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8673 Lassen Near Old Chat. Comment
  CAS-BOT-BC151428  Diplacus nanus Doris Kildale Gillespie 1930-5-12 9354 Lassen Between Susanville and Leavitt Lake Comment
  CAS-BOT-BC151429  Diplacus nanus John Thomas Howell 1962-6-19 37887 Lassen 3 mi. s. of Hallelujah Junction - Sierra Nevada 1524 Comment
  CAS-BOT-BC208725  Distichlis spicata A. A. Beetle 1941-6-28 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak Comment
  CHSC115787  Distichlis spicata Lowell Ahart; John Dittes 2015-7-14 20333 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UCD64624  Distichlis spicata var. stricta Verne Grant; Irving Schneider 1947-9-5 8377 Lassen Northwest shore of Eagle Lake by Sam Webb's place (Spaulding). Comment
  CHSC61170  Dodecatheon conjugens Vernon H. Oswald; Lowell Ahart 1993-5-12 5381 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy 44, between A21 (to Westwood) and Poison Lake, on the edge of a large meadowy opening covered with sagebrush scrub along Pine Creek. 1737 Comment
  NY677195  Dodecatheon conjugens G. Schoolcraft 1988-4-25 1783 Lassen Ash Valley RNA/ACEC 16 miles east of Adin 1554 Comment
  UCR227662  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  CHSC112464  Downingia bacigalupii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18738 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
  CHSC12415  Downingia bacigalupii Anne Linda Brisk 1969-6-26 30 Lassen Growing in Papoose Meadow, 13.5 mi SW of ELBS. 1658 Comment
  CHSC23439  Downingia bacigalupii K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5807 Lassen Drying vernal pool area, e side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  CHSC66240  Downingia bacigalupii Vernon H. Oswald; Lowell Ahart 1996-6-24 7845 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
  UC1609180  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1993-6-28 5612 Lassen ne of Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvye Mtn); Harvey Mtn. 1798 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
  JEPS108450  Downingia bacigalupii Lisa Schultheis 1995-6-27 227 -95 Lassen About 3.5 mi S of Madeline, W side of Hwy 395. Comment
  SEINET12329644  Downingia bacigalupii N. H. Holmgren, Holmgren, P. K. 1980-1 9472 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) W of US Highway 395 from a turnoff 10.3 km 1615 Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  JEPS114876  Downingia bicornuta var. bicornuta Lowell Ahart, John Dittes 2008-6-20 14945 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
  UC157670  Downingia bicornuta var. bicornuta Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  JEPS120848  Downingia cuspidata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18727 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
  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
  CDA42329  Downingia elegans G. D. Barbe 1982-7-12 3869 Lassen Grasshopper Valley; 0.8 miles northeast of Highway 139, on South Grasshopper Road. 0 Comment
  RSA505420  Downingia insignis Rimo Bacigalupi, Mitchell, S. Galen Smith, G. Bacigalupi 1957-6-28 6000 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline 1616 Comment
  HSC68798  Downingia laeta Gary Schoolcraft 1980-7-16 319 Lassen N end of Nelson Corral Reservoir area. 1805 Comment
  RSA0035918  Downingia laeta Lowell A. Ahart, John Dittes 2008-6-20 14928 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET8039620  Downingia laeta G. Schoolcraft 1995-6-6 2493 Lassen Laver Spring. 1585 Comment
  CAS-BOT-BC42077  Draba aureola Eben McMillan 1968-6-28 140 -1 Lassen South slope of Mount Lassen. Comment
  CAS-BOT-BC41370  Draba verna M. S. Taylor 1982-5-7 4428 Lassen Reno Junction on Highway 70 just east of Beckwourth Pass. 1524 Comment
  JEPS94137  Draba verna Vernon H. Oswald and Lowell Ahart 1998-5-22 9128 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts., 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CHSC76099  Elaeagnus angustifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8223 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3-1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC116197  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20302 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
  JEPS123971  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20301 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS123972  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS123975  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20299 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCD58788  Elatine chilensis Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  CDA7765  Eleocharis acicularis var. acicularis G. Schoolcraft 1995-5-22 s.n. Lassen Morgan Spring N of Skedaddle Mtns. 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
  UC1818  Eleocharis macrostachya J. Burtt Davy Jun 17-24 1897 3287 Lassen Honey Lake Valley, W end of lake Comment
  CHSC117286  Eleocharis palustris Lowell Ahart; John Dittes 2016-7-15 21215 Lassen About 300b yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) mortheast of Bieber, Big Valley. 1261 Comment
  JEPS127217  Eleocharis palustris Lowell Ahart, John Dittes 2016-7-15 21215 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA252444  Eleocharis parishii Robert F. Thorne, C. W. Tilforth 1969-9-6 39258 Lassen along Long Valley Creek, c. 14 mi. SE of Milford. 1311 Comment
  UC1776676  Eleocharis quinqueflora G. Schoolcraft 1995-5-23 2488 Lassen Three Springs 1554 Comment
  HSC95170  Eleocharis suksdorfiana Gordon Leppig 1998-8-17 1045 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC7692  Elymus Beverly J. Wise 1969-5-23 123 Lassen 35 miles SE of Susanville on Lassen County Road 320. 1249 Comment
  CAS-BOT-BC203831  Elymus X hansenii David D. Keck; J. Clausen 1935-6-24 3751 Lassen 2 mi. S. of Ravendale 1464 Comment
  UCD62817  Elymus X saundersii Beecher Crampton 1960-6-18 5716 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  SEINET12737887  Elymus cinereus M. Church 2016-7-26 14 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1412 Comment
  SEINET10521752  Elymus cinereus var. pubens Billy Joe Cox 1971-6-2 Cox 3232 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus- Jeffery Pine on mountain range to west at approx. same alt. 1250 Comment
  CAS-BOT-BC227482  Elymus elymoides John Thomas Howell; Gordon H. True 1973-8-1 50197 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  JEPS123452  Elymus elymoides Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -148 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  CHSC13858  Elymus elymoides subsp. elymoides George Ellmore 1973-6-25 735 Lassen 10 m. from water on west side of Pelican Point on West Eagle Lake. 1560 Comment
  UC1136930  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC506990  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC53733  Elymus elymoides subsp. elymoides J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  JEPS126480  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-15 CA 350 -044 Lassen Throughout reservoir along right side of Horse Road when traveling North. Comment
  CHSC29902  Elymus glaucus Robin L. Ondricek 1978-7-22 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. 1584 Comment
  JEPS121261  Elymus glaucus Lowell Ahart, John Dittes 2013-7-23 18893 Lassen About 30 feet NE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. 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-BC206731  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CAS-BOT-BC234094  Elymus multisetus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49447 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  JEPS121262  Elymus repens Lowell Ahart, John Dittes 2013-7-23 18894 Lassen About 20 feet SW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA0105549  Elymus spicatus L. P. Janeway, B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  SEINET5642835  Elymus spicatus Fred W. Hoffman 1946-6-8 1822 Lassen Lava beds east of Karlo, CA.; 0 Comment
  UC1024705  Elymus trachycaulus Leo Whitney 1933-6-9 2139 Lassen Black's Lake Lassen National Forest 1706 Comment
  UC1136821  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 230 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  CAS-BOT-BC204358  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1973-7-10 49776 Lassen Fredonyer Pass 1737 Comment
  HSC69080  Elymus trachycaulus subsp. trachycaulus Gary Schoolcraft 1980-7-28 333 Lassen Meadow E of Tule Mountain. 2043 Comment
  UC1924266  Elytrigia pontica subsp. pontica Debra Valov 2005-8-20 2005230 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1279 Comment
  CHSC7704  Ephedra viridis Beverly J. Wise 1969-5-18 44 Lassen 13.4 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. Comment
Read comments
Dec 31 2006
  CHSC93239  Ephedra viridis John Dittes; Scott Chamberlain 2004-6-28 1022 Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow edge. 1496 Comment
  RSA245293  Ephedra viridis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19306 Lassen Along Hwy 395 about 4 miles E of Standish Comment
  CHSC113058  Epilobium brachycarpum Lowell Ahart; John Dittes 2013-7-22 18845 Lassen West margin of a duck field, about 10 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC14185  Epilobium brachycarpum M. S. Taylor 1974-7-10 279 Lassen Ca. 50 ft w of road to Gallatin Beach, ca. 5 mi s of Gallatin Beach on Eagle Lake, ca. 10 mi nw of Susanville. 1524 Comment
  RSA702600  Epilobium brachycarpum L. P. Janeway 2004-6-26 8146 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
  SEINET12539665  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  HSC16337  Epilobium brachycarpum M. T. Milligan 1964-8-23 237 Lassen Above Eagles Nest on main road, Eagle Lake 1829 Comment
  RSA0011500  Epilobium brachycarpum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46975 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  UC303060  Epilobium canum subsp. latifolium Pearl Safford 111 Lassen Susanville [uncertain locality] Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS39248  Epilobium ciliatum subsp. ciliatum Brown and Wieslander 1922-7-30 16 Lassen Martin Sprs. Eagle Lake Comment
  RSA0105585  Epilobium ciliatum subsp. ciliatum Lowell Ahart, John Dittes 2013-7-22 18856 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS117486  Epilobium densiflorum Lowell Ahart, John Dittes 2010-7-31 16994 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  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
  UC773935  Epilobium hallianum L. R. Short and J. Warren 1936-6-11 S- 429 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1737 Comment
  UC1609447  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  GMDRC6955  Epilobium pallidum J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31430 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  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-BC332739  Epilobium pallidum R. F. Thorne; Larry E. DeBuhr 1975-8-22 46980 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  CAS-BOT-BC57976  Equisetum John Thomas Howell 1976-7-19 51994 Lassen On Gold Run Creek sw. of Susanville. Comment
  CHSC66368  Equisetum arvense Vernon H. Oswald; Lowell Ahart 1996-6-17 7821 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of a pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CHSC61944  Equisetum laevigatum Eenam Sin 1992-6-2 18 Lassen Murrers Meadow. 1524 Comment
  RSA26289  Equisetum laevigatum Alice Eastwood, J. T. Howell 1940-6-11 7996 Lassen Bieber 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
  CHSC76105  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8229 Lassen Along the north side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  SBBG115910  Eragrostis cilianensis J. T. Howell 1973-7-10 49793 Lassen city park, Susanville 1295 Comment
  CAS-BOT-BC174094  Eremogone aculeata John Thomas Howell 1934-6-14 12160 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC174119  Eremogone aculeata B. J. Hammerly 1941-6-20 50 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  CAS-BOT-BC174183  Eremogone congesta var. charlestonensis John Thomas Howell 1977-6-22 52401 Lassen North end of Eagle Lake 1584 Comment
  CAS-BOT-BC174200  Eremogone congesta var. congesta David D. Keck; J. Clausen 1935-6-24 3746 Lassen 2 mi. S. of Ravendale 1464 Comment
  SEINET12875577 Image available Eremogone congesta var. suffrutescens George W. Gillett 1957-1 945 Lassen Along trail between Butte Lake and Snag Lake. 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-BC160008  Eremothera boothii subsp. boothii Louella Bass 1978-6-21 s.n. Lassen East side of Honey Lake Valley near Wendel Comment
  CAS-BOT-BC160009  Eremothera boothii subsp. boothii Louella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  UC1178959  Eriastrum signatum Herbert L. Mason 1957-7-5 14714 Lassen s Madeline; Madeline Plains Comment
  CAS-BOT-BC515170  Eriastrum signatum Alice Eastwood; John Thomas Howell 1940-6-16 8331 Lassen Near Susanville Comment
  NY1012886  Eriastrum sparsiflorum W. W. Eggleston 1911-7-8 7191 Lassen Vicinity of Doyle Station 1290 Comment
  UCD54567  Eriastrum sparsiflorum Ellen Dean; Dawn Cunningham 2005-10-25 2750 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  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
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  UC133905  Eriastrum wilcoxii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC515234  Eriastrum wilcoxii Rimo Bacigalupi; G. T. Robbins 1955-7-21 5418 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  CAS-BOT-BC286606  Ericameria bloomeri E. K. Balls; P. C. Everett 1952-10-9 18134 Lassen About Plumas-Lassen county line, Hwy 89, east of Lake Almanor 1219 Comment
  CHSC36978  Ericameria bloomeri M. S. Taylor; B. Hammond 1982-8-27 5054 Lassen Crystal Peak area, Diamond Mts, ca. 6 air mi sw of Doyle. 2377 Comment
  CHSC30574  Ericameria nauseosa Sori H. Shad 1970-6-19 37 Lassen Found north of E.L.B.S. in front of the Library. 1524 Comment
  JEPS21522  Ericameria nauseosa var. oreophila Joseph Grinnell 1928-7-13 Lassen Petes Valley Comment
  JEPS95709  Ericameria nauseosa var. oreophila Vernon H. Oswald and L. Ahart 1995-8-14 7181 Lassen T31N R15E NW1/4 Sec. 11, 4460 ft, Modoc Plateau, Sagebrush Scrub. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville 1359 Comment
  UC527343  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 Lassen 2.6 mi from Bieber (on the road to Alturas); Big Valley 1267 Comment
  CHSC76084  Ericameria nauseosa var. speciosa Lowell Ahart; Vernon H. Oswald 1999-9-13 8201 Lassen On the west side of the dirt road and 1/4 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1136975  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spr. Exp. Range Lassen Forest 1755 Comment
  UC1483819  Ericameria nauseosa var. speciosa G. Schoolcraft 1980-10-8 359 Lassen w side of Painters Flat 1716 Comment
  UC221388  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11680 Lassen 21 mi from Susanville (along roadside, s side of Honey Lake Valley); Honey Lake Valley Comment
  CAS-BOT-BC294188  Ericameria nauseosa var. speciosa L. A. Waitzinger 1923-8-16 s.n. Lassen Susanville, north slope of Inspiration Pt Comment
  SEINET8198339 Image available Ericameria parryi var. parryi D. W. Taylor 2002-8-10 18310 Lassen Plumas National Forest Road 24N02X 1.2 air miles from Constantina Road, East slope Diamond Mountains (ca. 4 air miles South of Doyle) 1433 Comment
  CDA18267  Erigeron G. D. Barbe 1974-8-2 1931 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET201631  Erigeron aphanactis A. Cronquist, AH Holmgren 1959-6-17 8466 Lassen 50 mi SE of Susanville 1372 Comment
  CHSC93247  Erigeron aphanactis var. aphanactis John Dittes; Scott Chamberlain 2004-6-28 1008 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  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
  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
  SEINET240401  Erigeron bloomeri S. L. Welsh, ND Atwood 2001-6-14 28153 Lassen E of Hwy 395, rd to Rams Horn Spring campground 1539 Comment
  SEINET10617399  Erigeron bloomeri David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17790 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  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
  CHSC60815  Erigeron bloomeri var. bloomeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC92714  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2005-7-10 8486 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  CHSC99139  Erigeron bloomeri var. bloomeri Lowell Ahart; John Dittes 2008-6-19 14894 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  HSC82194  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6048 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS114758  Erigeron bloomeri var. bloomeri Lowell Ahart, John Dittes 2008-6-19 14894 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  RSA768025  Erigeron bloomeri var. bloomeri L. Ahart, John Dittes 2010-7-31 17010 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1511 Comment
  UC1228141  Erigeron bloomeri var. bloomeri Beecher Crampton 1960-6-18 5723 Lassen vicinity Blue Lake Ranch; southern Warner Mountains Comment
  UC1536740  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-27 559 Lassen near top Hot Spring Mt. 1828 Comment
  CAS-BOT-BC294493  Erigeron bloomeri var. bloomeri Ella Dales Cantelow 1941-5-22 3566 Lassen Few mi. n. of Litchfield. U.S. Hy. 395 to Alturas Comment
  CAS-BOT-BC297144  Erigeron concinnus var. concinnus Ella Dales Cantelow 1940-5-31 3086 Lassen e. of Bieber 1219 Comment
  CAS-BOT-BC296847  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-16 8340 Lassen Janesville Comment
  JEPS127271  Erigeron divergens Lowell Ahart, John Dittes 2016-7-13 21106 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC1583973  Erigeron divergens G. Schoolcraft 1990-7-11 2107 Lassen on e slopes Tule Mtn. 1767 Comment
  UC1924228  Erigeron divergens Debra Valov 2004-6-8 2004246 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC74069  Erigeron divergens J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Honey Lake Valley, Long Valley Comment
  RSA504624  Erigeron eatonii var. plantagineus Bruce Bartholomew, B. Anderson 1988-6-25 4374 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  CAS-BOT-BC300424  Erigeron elegantulus Gary Schoolcraft 1983-6-29 1040 Lassen Along Hwy 139 near Upper McBride Sp. 1584 Comment
  CHSC64838  Erigeron elegantulus Vernon H. Oswald 1995-6-26 6945 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  UC31465  Erigeron elegantulus Mrs. C. C. Bruce 1892-6-1 2182 Lassen Madaline Plains Comment
  CHSC87110  Erigeron filifolius var. filifolius L. P. Janeway 2001-6-20 7201 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  CAS-BOT-BC295182  Erigeron inornatus John Thomas Howell 1974-7-10 50561 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC295181  Erigeron inornatus John Thomas Howell 1974-7-10 50516 Lassen Janesville 1295 Comment
  CHSC88611  Erigeron inornatus var. calidipetris Linnea Hanson 1998-8-11 378 Lassen Lassen National Forest. Off Hwy. A21 north of Westwood. 1524 Comment
  JEPS97369  Erigeron inornatus var. calidipetris Vernon H. Oswald and L. Ahart 1995-7-24 7146 Lassen T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor 1905 Comment
  CHSC92961  Erigeron inornatus var. inornatus L. P. Janeway 2005-8-27 8522 Lassen High Cascade Range. Along Road 22, 11.3 road km east of Little Valley; above Davis Creek. 1460 Comment
  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
  CHSC68844  Erigeron linearis Vernon H. Oswald; Lowell Ahart 1997-6-24 8608 Lassen South of Susanville on the north side of Diamond Mtn. at slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. At roadside. 1889 Comment
  CAS-BOT-BC295959  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  CHSC30580  Erigeron philadelphicus Sori H. Shad 1970-6-25 46 Lassen 3 mile from E.L.B.S. in Meadow. 1524 Comment
  CAS-BOT-BC295958  Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  HSC5530  Erigeron philadelphicus M. S. Baker 1893-1 Lassen Vicker's Ranch, Big Valley, collected in the summer Comment
  CDA34230  Erigeron pumilus subsp. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  JEPS114759  Erigeron pumilus subsp. intermedius Lowell Ahart, John Dittes 2008-6-19 14867 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
  JEPS117505  Erigeron pumilus subsp. intermedius Lowell Ahart, John Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  RSA700053  Erigeron pumilus subsp. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km NNW of Harvey Mountain. 1640 Comment
  SEINET5333913  Eriogonum baileyi D. Tonenna 2007-8-20 s.n. Lassen Hwy 395, 6 mi. north of Halellujah Junction, west of road 1450 Comment
  CAS-BOT-BC241566  Eriogonum baileyi var. baileyi John Thomas Howell; Gordon H. True 1973-8-1 50163 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC241570  Eriogonum baileyi var. baileyi John Thomas Howell 1955-7-19 30817 Lassen East side of Beckwourth Pass 1493 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
  UC1409081  Eriogonum baileyi var. baileyi R. F. Thorne and C. W. Tilforth 1969-9-6 39260 Lassen ca. 0.7 mi se along Hwy 395 Milford (w of Honey Lake) 1280 Comment
  UCR92117  Eriogonum cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  NY242504  Eriogonum collinum A. J. Cronquist 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  NY242506  Eriogonum collinum A. J. Cronquist 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  UC1477728  Eriogonum collinum Gary Schoolcraft 1979-6-19 73 Lassen n, along road Big Spring 1676 Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  RSA0009291  Eriogonum collinum G. H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1494 Comment
  NY570382  Eriogonum douglasii S. L. Welsh 2001-6-14 28154 Lassen East of Highway 395, road to Rams Horn Spring campground 1539.2 Comment
  CHSC99120  Eriogonum douglasii var. meridionale Lowell Ahart; John Dittes 2008-6-19 14895 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC50839  Eriogonum elatum var. elatum Vernon Oswald; Lowell Ahart 1990-7-25 4399 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 Comment
  UC85967  Eriogonum maculatum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  SD64343  Eriogonum microthecum var. laxiflorum D. F. Howe 1966-8-24 Lassen 39 miles northeast of Litchfield on hwy #395 1676 Comment
  UC85949  Eriogonum microthecum var. laxiflorum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  UC762680  Eriogonum nidularium R. F. Hoover 1940-9-29 4643 Lassen pass between Mt. Shaffer and Warren Peak Comment
  CAS-BOT-BC268790  Eriogonum nidularium Robert F. Hoover 1940-9-29 4643 Lassen Pass between Shaffer Mountain and Warren Peak Comment
  CAS-BOT-BC266368  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49514 Lassen West of Janesville, Elysian Valley, Sierra Nevada 1325 Comment
  POM105409  Eriogonum nudum var. deductum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  SEINET530760  Eriogonum nudum var. deductum Paul Opler 2008-8-6 Lassen West of Milford, nr. Laufman Campground. Comment
  RSA518444  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M- 4 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  CHSC13879  Eriogonum nudum var. pubiflorum J. Grove 1973-7-19 96 Lassen Collected on Big Valley Mountain 5 mi. W of Nubieber. 1310 Comment
  CHSC57303  Eriogonum nudum var. pubiflorum Mary Meyer 1980-7-14 Lassen 1/4 mi southeast of rest stop on Hwy 395, south of Ravendale. 1645 Comment
  JEPS126464  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-27 CA 350 -070 Lassen North on Highway 139 to Antelope Grade. 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
  UC1032183  Eriogonum nudum var. pubiflorum H. P. Hagge 1929-9-11 17 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC761785  Eriogonum nudum var. pubiflorum R. F. Hoover 1940-9-28 4629 Lassen Susanville Comment
  UCR17292  Eriogonum nudum var. pubiflorum Frank C. Vasek 1975-7-11 750711- 40 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  NY282297  Eriogonum nummulare A. Tiehm 1978-10-14 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan. About 1.7 miles W of the Nevada Line. 1524.0 Comment
  SEINET5333908  Eriogonum ochrocephalum D. Tonenna 2007-8-20 s.n. Lassen Hwy 395, 6 mi north of Halellujah Junction along west side of road. 1450 Comment
  CHSC114416  Eriogonum ovalifolium var. depressum Don Lepley 2012-7-26 Lassen Windy Hollow, west of Highway 44 about three miles southeast of Bogard Rest Area. (plants also in Section 14 and probably Sec. 15 of T31N R08E) 1722 Comment
  CAS-BOT-BC258739  Eriogonum ovalifolium var. ovalifolium John Thomas Howell 1934-7-7 12469 Lassen Pine Creek Flat Comment
  HSC63563  Eriogonum prociduum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6004 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  NY283074  Eriogonum spergulinum var. reddingianum R. F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  POM105202  Eriogonum sphaerocephalum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC6226  Eriogonum sphaerocephalum var. halimioides 1944-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CHSC71393  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen Shugru Reservoir in Bass Hill WA on Hwy. 395 between Susanville and Janesville, 2.7 mi southeast of Hwy. 36. Roadside flat. 1243 Comment
  CHSC87118  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7200 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  NY283113  Eriogonum sphaerocephalum var. halimioides H. D. D. Ripley 1943-6-13 5710 Lassen South of Johnstonville 1325.9 Comment
  RSA702603  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2004-6-26 8142 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC726566  Eriogonum sphaerocephalum var. sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen s Secret Valley (on U. S. Highway #395) 1371 Comment
  CHSC6224  Eriogonum strictum var. anserinum A. Santos 1946-6-17 Lassen Mt. Fredonyer road. Eagle Lake. 2133 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
  UC1249283  Eriogonum strictum var. anserinum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8473 Lassen 50 mi se Susanville 1371 Comment
  CHSC25912  Eriogonum strictum var. proliferum K. R. Stern 1967-7-1 2435 Lassen California State Hwy. 139, 14 mi. N of Susanville. Comment
  UCR248974  Eriogonum umbellatum Elizabeth A. Kempton, Tim Tibault 2006-7-29 418 Lassen town of Chester, vacant lot at intersection of Willow Way and Main Street 1388 Comment
  CAS-BOT-BC267887  Eriogonum umbellatum Clarence R. Quick 1962-8-3 62 -89 Lassen Delasmutt Ranch, Hw. 44, nr. Susanville-Old Station, along dirt road to Blacks Mt. E.F. Hdqtrs. 1615 Comment
  CAS-BOT-BC267891  Eriogonum umbellatum A. A. Heller 1938-6-23 15190 Lassen In the first valley east of Westwood Comment
  CAS-BOT-BC267892  Eriogonum umbellatum Margaret M. Hanna 1956-6-3 s.n. Lassen Near Hiway 299, 62 mi. E. of Redding Comment
  CHSC30618  Eriogonum umbellatum var. modocense Eric Miller 1975-7-8 7 Lassen N. E. slope of Gallatin Peak. 2011 Comment
  CHSC99123  Eriogonum umbellatum var. modocense Lowell Ahart; John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1137678  Eriogonum umbellatum var. modocense George A. Fischer and Irwin H. Johnson 1933-7-12 F 201 Lassen Grass Valley Lassen National Forest, Grass Valley 1699 Comment
  UC412898  Eriogonum umbellatum var. modocense W. E. Bryant Aug. 1888 Lassen Eagle Lake Comment
  HSC17447  Eriogonum umbellatum var. modocense J. Wendell Howe 1934-7-9 1295 Lassen Cinder Cone, Lassen NP Comment
  JEPS88218  Eriogonum umbellatum var. modocense Vernon H. Oswald and Lowell Ahart 1996-6-17 7799 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville 1420 Comment
  CAS-BOT-BC265091  Eriogonum umbellatum var. nevadense John Thomas Howell 1976-7-19 51951 Lassen Southwest of Susanville on Gold Run Road, Sierra Nevada 1341 Comment
  CAS-BOT-BC265092  Eriogonum umbellatum var. nevadense John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50673 Lassen Summit ridge of Diamond Mt., Sierra Nevada 2346 Comment
  CAS-BOT-BC265101  Eriogonum umbellatum var. nevadense Frank W. Peirson 1926-6-24 6848 Lassen A few miles southward from the Madeline Plain Comment
  CHSC106592  Eriogonum umbellatum var. nevadense C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC93680  Eriogonum umbellatum var. nevadense Lowell Ahart; John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  UC725577  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen slope between Secret Valley and Ravendale Comment
  CAS-BOT-BC262365  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC105234  Eriogonum vimineum Lowell Ahart; John Dittes 2010-7-31 17018 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  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
  CHSC56867  Eriogonum vimineum Mary Meyer 1980-7-3 Lassen North of Jeep trail going up drainage above camping pullover. 1584 Comment
  CHSC61233  Eriogonum vimineum P. V. Caldwell 1972-6-17 227 Lassen Eagle Lake B. Station. Outside and around Tom Rodgers Hall. Comment
  NY399609  Eriogonum vimineum J. L. Reveal 1971-6-22 2464 Lassen Along U.S. Highway 395, 4.5 miles south of Ravendale Comment
  NY399826  Eriogonum vimineum G. Schoolcraft 1982-8-18 889 Lassen Along Doyle Grade road west of Doyle Creek 1585.0 Comment
  RSA768781  Eriogonum vimineum L. Ahart, John Dittes 2010-7-31 17018 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  UC1258486  Eriogonum vimineum G. Schoolcraft 1979-6-19 78 B Lassen Painter's Flat 1719 Comment
  POM260787  Eriogonum vimineum Alice Eastwood, John T. Howell 1940-6-16 8343 Lassen Janesville. Comment
  CHSC4262  Eriophyllum lanatum K. R. Stern 1967-6-24 2414 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CAS-BOT-BC308135  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11896 Lassen Horse Lake Comment
  CAS-BOT-BC308141  Eriophyllum lanatum var. achilleoides B. J. Hammerly 1941-6-21 43 Lassen 8 mi. SE of Likely on Blue Lake Road Comment
  CDA5861  Eriophyllum lanatum var. achilleoides Gary Schoolcraft 1991-7-3 2199 Lassen East slope of widow mountain. Comment
  CHSC92740  Eriophyllum lanatum var. achilleoides L. P. Janeway 2005-7-3 8453 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  SBBG61066  Eriophyllum lanatum var. achilleoides S. W. Hutchinson -Jun-1925 270 Lassen Eagle Lake region 1554 Comment
  UC507011  Eriophyllum lanatum var. achilleoides George A. Fischer and Irwin H. Johnson 1933-7-14 F 250 Lassen Lassen Forest 1767 Comment
  RSA92671  Eriophyllum lanatum var. achilleoides F. W. Peirson 1926-6-24 6849 Lassen Several miles southward from the Madeline Plain Comment
  OBI75879  Eriophyllum lanatum var. croceum Anthony Baniaga 2011-6-29 402 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW 1500 Comment
  UC1283706  Eriophyllum lanatum var. integrifolium Beecher Crampton 1964-6-25 7068 Lassen State Hwy 44 25 mi nw Susanville; Lassen National Forest, Bogard Ranger Station 1722 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  SEINET10673285  Eriophyllum lanatum var. integrifolium Paul Gallian, David B. Dunn 1971-6-2 Gallian 472 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
  JEPS121272  Eryngium alismifolium Lowell Ahart, John Dittes 2013-7-22 18879 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  POM83000  Eryngium alismifolium Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1487304  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UC585097  Erysimum capitatum var. capitatum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1766 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  SBBG15427  Erythranthe breweri H. and M. Dearing 1939-7-1 2244 Lassen 17 mi W of Susanville Comment
  CHSC60923  Erythranthe inflatula Vernon H. Oswald; Lowell Ahart 1993-7-8 5652 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  SD7073  Erythranthe lewisii Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CAS-BOT-BC153608  Erythranthe moniliformis John Thomas Howell; Gordon H. True 1973-7-31 50051 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 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
  SEINET13723865 Image available Erythranthe moniliformis Farris Farris 1936-1 Lassen Diamond Mountain 1829 Comment
  CHSC14065  Erythranthe primuloides J. Grove 1973-7-25 Lassen Collected at Collemans Lake along fill dam of lake. 1524 Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  CHSC4974  Erythranthe primuloides D. L. Stites 1967-7-14 168 Lassen 3 mi e of turnoff to Silver Lake on highway 44. 1524 Comment
  SEINET3836923 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Pratville, Clear Creek 1524 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
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 Comment
  UC1562582  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ca 10 airmi due s of, (ridge of Diamond Mts ca 1.5 mi e of Diamond Peak) Susanville; Diamond Mts. 2255 Comment
  CHSC45999  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, .6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin). On and about driveways in front of house. 1280 Comment
  CDA3706  Euclidium syriacum E. E. Fix 1951-6-8 Lassen 0 Comment
  SFV1478  Euclidium syriacum B. J. McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 miles west of its junction with Bassett Road (about 2 miles south of U. S. Highway 299 and 4 miles southwest 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
  CDA35315  Euphorbia crenulata T. C. Fuller 1963-6-12 10666 a Lassen 0.1 mile east of Clear Creek, northeast shore of Lake Almanor. 0 Comment
  UCSC000449  Euphorbia dictyosperma M. S. Baker 02 Julyunknown year s.n. Lassen South side of Dixey Mts. Lassen Mts. Comment
  JEPS97418  Euphorbia spathulata Vernon H. Oswald and L. Ahart 1995-6-19 6881 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  CAS-BOT-BC278459  Festuca idahoensis John Thomas Howell 1934-6-14 12169 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  JEPS114855  Festuca idahoensis Lowell Ahart, John Dittes 2008-6-19 14880 Lassen about 100 yds E of Willow Creek, about 120 yds NE of Hwy 139, near Forest Road 36N02, about 19.6 mi E-SE of Bieber 1578 Comment
  JEPS127719  Festuca idahoensis Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -174 Lassen 171 on Likely Mtn. After the second tight switchback the population is off the road downslope. Comment
  RSA647539  Festuca idahoensis Marion P. Harthill 1972-6-17 822 Lassen Madeline. 1677 Comment
  UC1026711  Festuca idahoensis Leo Whitney 1935-6-23 3295 Lassen Camp 10, Fruit Grower's Supply Company Comment
  UCR17280  Festuca idahoensis Frank C. Vasek 1975-7-11 750711- 31 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC92651  Festuca rubra L. P. Janeway 2005-7-3 8460 Lassen High Cascade Range. At junction of Road 22 and Road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. 1523 Comment
  JEPS28299  Festuca rubra George W. Gillett 1957-7-29 947 Lassen between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  JEPS28492  Fragaria virginiana George W. Gillett 1957-7-22 884 Lassen s end Snag Lake (near campsite); Lassen Volcanic National Park 1850 Comment
  UC1523707  Fraxinus latifolia Gregg Riegel 1981-6-17 1128 Lassen in and along Beaver Creek Beaver Creek 1280 Comment
  JEPS4950  Fritillaria pudica Louise Scroggy 1918-3-24 Lassen 1/4 mi above Pit River (on Dixie Valley Road, 2 mi above Rocky Comfort School House in nw corner of Lassen Co., 15 mi n of boundary line); Dixie Valley Road Comment
  CAS-BOT-BC508129  Fritillaria recurva Mrs. A S. Baldwin 1928-5-10 318 Lassen Coyote Flat. Over ridge from Dixie Valley Comment
  RSA180586  Gaillardia aristata T. C. Fuller 1965-8-25 14036 Lassen East side of Hwy. 395 to Doyle, 2.4 miles north of Hallelujah Junction Comment
  CHSC68871  Galium bifolium Vernon Oswald; Lowell Ahart 1997-6-24 8606 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  HSC63933  Galium bifolium Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak 2195 Comment
  POM69200  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS58896  Galium trifidum var. pusillum John Thomas Howell 1959-9-23 34886 Lassen n end of lake Lassen Volcanic National Park, Juniper Lake 2057 Comment
  CAS-BOT-BC478878  Gayophytum John Thomas Howell; Gordon H. True 1973-8-1 50206 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2164 Comment
  CHSC25091  Gayophytum heterozygum K. R. Stern 1967-7-1 2469 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC106072  Gayophytum racemosum Lowell Ahart; John Dittes 2010-7-31 17029 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC27711  Gayophytum racemosum George Deriso 1978-7-21 90 Lassen S of Eagle Lake, at E end of Mahogany Lake; near lake shore. 2060 Comment
  JEPS107306  Gayophytum racemosum Lowell Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction 1438 Comment
  CAS-BOT-BC217384  Gentiana affinis var. ovata Duncan Dunning 1921-8-11 5 Lassen Near Martin Springs, Lassen National Forest Comment
  POM88686  Geranium pusillum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA0029585  Geranium viscosissimum var. nervosum Bruce Bartholomew, B. Anderson 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  POM91888  Geum aleppicum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1037208  Geum macrophyllum var. perincisum Leo Whitney 1933-8-14 1568 Lassen 8 mi nw of Eagle Lake (Lassen National Forest, Slate Creek); Lassen National Forest, Slate Creek 1920 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
  CHSC1549  Geum triflorum var. ciliatum 1944-7-5 Lassen Champ's Flat west of Eagle Lake. 1584 Comment
  SD107308  Gilia Christopher Davidson 1975-6-7 2756 Lassen 1.0 mile east of Beckwourth Pass on Highway 70. 1524 Comment
  UCR73831  Gilia brecciarum G. L. Webster 1989-5-13 7706 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA91465  Gilia brecciarum Verne Grant 1955-6-8 9669 Lassen 3.6 mi n of Halleluja Jct. on hwy 395. 1311 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
  SD131882  Gilia salticola Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mountains on northeast side of Honey Lake, talus slopes at base of rimrock on south side of Hot Springs VABM 2286 Comment
  CHSC60756  Gilia sinuata Vernon H. Oswald; Lowell Ahart 1993-6-14 5545 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On dunes on the N side of the road. 1566 Comment
  UC1583952  Gilia sinuata G. Schoolcraft 1990-6-12 2084 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); Pine Dunes RNA, e of Ravendale 1706 Comment
  JEPS96135  Glyceria borealis Vernon H. Oswald and Lowell Ahart 1996-6-24 7872 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  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
  UC1483863  Glyptopleura marginata G. Schoolcraft 1980-5-9 232 A Lassen near state line s of High Rock Ranch 1219 Comment
  CHSC99290  Gnaphalium palustre Lowell Ahart; John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS117581  Gnaphalium palustre Lowell Ahart, John Dittes 2010-7-31 16995 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
  CHSC60414  Gratiola ebracteata Mary Ann Showers 1992-6-13 2543 Lassen Shoreline at western end of Widow Lake. Lassen Volcania National Park. 2072 Comment
  UC1136436  Grayia spinosa E. Sawyer 1935-6-27 226 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UCD55266  Grayia spinosa Ellen Dean 2006-5-15 3064 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  CDA6056  Grindelia nana D. Sheehy 1990-8-17 Lassen Highway 395, south of Doyle, ca. 5 miles north of Hallelujah Junction. 0 Comment
  SEINET5709433 Image available Grindelia squarrosa Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7709 Lassen Willow Creek. Collected along CA 139.; Willow Creek 1428 Comment
  CAS-BOT-BC304679  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  SEINET8770843 Image available Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Turnoff to Janesville along Hwy 395 Comment
  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
  UC1533130  Gymnosteris parvula G. Schoolcraft 1986-5-14 1567 Lassen near road at stateline in Tuledad Canyon Tuledad Canyon 1524 Comment
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Nov 4 2011
  UCD98138  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  UCD98139  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CDA3429  Gypsophila paniculata T. C. Fuller 1971-10-6 19933 Lassen Northeast side of Highway 395 to Susanville, 1 mile north of Janesville. 0 Comment
  CDA34391  Gypsophila paniculata Anonymous 1987-6-17 Lassen Off US 395 near Janesville. 0 Comment
  UC1483851  Hackelia californica G. Schoolcraft 1980-7-15 310 Lassen w of Bieber; Big Valley Mountain 1798 Comment
  UC1587098  Hackelia californica G. Schoolcraft 1991-7-30 2197 Lassen e slope of Widow Mountain 1859 Comment
  UC1035983  Hackelia californica Helen K. Sharsmith 1955-6-27 4517 Lassen n of Hat Creek Ranger Station (forest adjacent to Highway 89); Lassen National Forest 1158 Comment
  UC1537393  Hackelia floribunda Gordon H. True Jr. 1936-6-27 562 Lassen n slope of Hot Spring Mountain 1828 Comment
  JEPS98273  Halogeton glomeratus Vernon H. Oswald 2000-9-14 9962 Lassen Wendell Road 3.2 mi E of Hwy 395 1228 Comment
  SBBG8396  Helianthella californica H. and M. Dearing 1938-7-1 2246 Lassen near Westwood Comment
  UC32278  Helianthus annuus Baker and Nutting 1894-7-2 Lassen Comment
  UC1483881  Helianthus cusickii G. Schoolcraft 1979-6-19 71 Lassen South of Big Spring Comment
  UC579801  Helianthus cusickii David D. Keck and J. Clausen 1935-6-24 3739 Lassen 2 mi s Ravendale 1465 Comment
  UC727121  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen along Hwy 395 on ridge n Mapes Comment
  CDA6549  Helianthus cusickii T. C. Fuller 1959-7-7 2910 Lassen Highway 395 and railroad, 5 miles north of road to Wendel. 0 Comment
  RSA302646  Helianthus cusickii J. R. Shevock 1972-5-20 1818 Lassen Near Johnsonville, Hwy 395. Comment
  CAS-BOT-BC305785  Helianthus nuttallii Herbert L. Mason 1947-8-11 13492 Lassen Highway 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  HSC5797  Helianthus nuttallii M. T. Milligan 1964-7-16 134 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC1483827  Heliotropium curassavicum G. Schoolcraft 1980-7-10 303 Lassen e. shore Eagle Lake 1554 Comment
  SEINET11197274 Image available Hemizonella minima G. Schoolcraft 1997-6-26 2601 Lassen W of Hwy 395 between Janesville and Milford 1676 Comment
  CHSC61154  Hesperochiron californicus Vernon H. Oswald; Lowell Ahart 1993-5-12 5377 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood), at a large, meadowy flat covered with dwarf sagebrush and scattered small pines. 1729 Comment
  JEPS94598  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1997-5-27 8525 Lassen on Forest Route 38N04 4.7 mi ne Hwy. 139; Coyote Flat 1798 Comment
  SEINET5499704  Hesperochiron californicus N. H. Holmgren, P. K. Holmgren 1978-6-11 8910 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  UC773897  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley Lassen Forest, Harvey Valley 1706 Comment
  UCD55304  Hesperochiron californicus Ellen Dean; Gary Schoolcraft 2006-5-16 3133 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  HSC63725  Hesperochiron californicus Teresa Prendusi 1980-4-29 Lassen Five Springs Mtn. 1402 Comment
  CHSC4793  Hesperolinon micranthum R. Carter 1967-6-29 570 Lassen On rd to Murrer's Meadow. Eagle Lake. Comment
  CHSC66391  Hesperolinon micranthum Vernon H. Oswald; Lowell Ahart 1996-6-17 7796 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hy. 36 ca. 7 mi W of Susanville. 1420 Comment
  CAS-BOT-BC280680  Hesperostipa comata John Thomas Howell 1934-6-10 11841 Lassen Near Plumas Junction Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  CAS-BOT-BC312415  Hieracium albiflorum Alice Eastwood 1912-8-22 1781 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  HSC40172  Hieracium horridum Thomas W. Nelson, Jane P. Nelson 1976-8-1 3124 Lassen Lassen Volcanic National Park at Devestated Area Comment
  UC92036  Hieracium scouleri unknown 1892-6-28 Lassen Janesville Comment
  CHSC87105  Hieracium scouleri var. scouleri L. P. Janeway 2001-6-20 7196 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1510 Comment
  CHSC75503  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1999-6-9 9737 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395, springy marsh surrounded by sagebrush scrub. 1353 Comment
  UC20698  Hippuris vulgaris J. Burtt Davy Jun 17 1897-Jun 24 1897 3334 Lassen Honey Lake Valley, Honey Lake 1219 Comment
  UCD170233  Holodiscus discolor var. glabrescens K. M. Meyer; A. Townesmith 2007-7-23 150 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  UCD85742  Hordeum jubatum Gerald Dickinson 1963-7-15 99 Lassen Ravenville. US Hwy 395. 1618 Comment
  CHSC117517  Hordeum marinum subsp. gussoneanum Lowell Ahart; John Dittes 2016-7-13 21147 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
  UC1924232  Hordeum murinum subsp. leporinum Debra Valov 2004-6-9 2004262 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  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
  CHSC21234  Hydrophyllum capitatum var. alpinum F. Tom Griggs; Robert A. Schlising 1974-5-30 3135 Lassen West side of Colman Lake, at margins of meadow. 1950 Comment
  UC1609439  Hydrophyllum capitatum var. alpinum Vernon H. Oswald and Lowell Ahart 1993-5-12 5378 Lassen 3.5 mi nw A21 (to Westwood) (canal crossing Hwy 44, n side of road and e side of canal, at a large meadowy flat) 1729 Comment
  UC124657  Hypericum anagalloides T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  SEINET10720226  Hypericum perforatum Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 140 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  SEINET5344266  Hypericum scouleri C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  SEINET8887136  Iliamna bakeri R. R. Halse 2004-1 6615 Lassen Along State Hwy 139, ca 6 miles N of Eagle Lake 1710 Comment
  UCD126378  Iliamna bakeri Richard R. Halse 2004-7-8 6615 Lassen Along State Highway 139, around 6 miles north of Eagle Lake. 1710 Comment
  JEPS816  Ipomopsis aggregata Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  UC879819  Ipomopsis aggregata C. L. Hitchcock 1940-5-26 6601 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River Comment
  CHSC13883  Ipomopsis aggregata subsp. formosissima S. Villard 1973-7-12 65 Lassen Gallatin Peak. 1066 Comment
  HSC82266  Ipomopsis congesta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5991 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA748951  Ipomopsis congesta J. R. Shevock, Barbara Ertter 1986-7-20 11741 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles W of Madeline and U.S. Hwy 395. 1550 Comment
  UC584300  Ipomopsis congesta G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2269 Lassen s Susanville (sw of Diamond Mt.) 2164 Comment
  CHSC75515  Ipomopsis congesta subsp. congesta Vernon H. Oswald; Lowell Ahart 1999-6-9 9745 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  CHSC64801  Ipomopsis polycladon Vernon H. Oswald 1995-5-24 6769 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  POM312929  Iris missouriensis H. L. Mason 1949-5-30 s.n. Lassen Northeast of Burney Falls 1524 Comment
  UCD138823  Iris tenuissima Michael A. Vincent 1999-6-9 8586 Lassen Along US Rt. 44, ca. 1 mile west of Viola, 13 miles east of Shingletown. 1524 Comment
  CHSC68763  Ivesia paniculata Vernon H. Oswald; Lowell Ahart 1997-5-27 8494 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the north side of the creek paralleling the road. 1546 Comment
  SEINET3860245  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 mi W of Madeline.; 0 Comment
  SEINET4855367  Ivesia paniculata Unknown 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 mi E of Adin. 1555 Comment
  JEPS109644  Ivesia sericoleuca Dean W. Taylor 2002-6-21 18168 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  CAS-BOT-BC109934  Juncus John Thomas Howell 1976-7-19 51971 Lassen Sierra Nevada. On Gold Creek southwest of Susanville. 1386 Comment
  RSA0011564  Juncus bufonius Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46988 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  JEPS127272  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2016-7-13 21140 Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS126567  Juncus bufonius var. congestus Lowell Ahart, John Dittes 2016-6-7 20987 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hill at the southern slope of Big Valley. Comment
  POM261438  Juncus bufonius var. occidentalis Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville. Comment
  CHSC60786  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1993-6-3 5474 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. In a large meadow. 1731 Comment
  CHSC60787  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1993-6-3 5481 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake, on the S side of Pine Creek Valley, between Poison Lake and Susanville. Along drainages and on the edge of a meadow. 1725 Comment
  JEPS118350  Juncus hemiendytus var. hemiendytus Lowell Ahart, John Dittes 2011-6-20 17480 Lassen About 15 yards west of the stream, about 40 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
  JEPS94376  Juncus hemiendytus var. hemiendytus Vernon Oswald and Lowell Ahart 1997-6-24 8653 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  RSA325011  Juncus luciensis A. Tiehm, Jan Nachlinger 1984-6-25 8824 Lassen Rodeo Flat, 2.7 miles west of the state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  CHSC96731  Juncus nevadensis Gordon Leppig 1998-7-12 946 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow a complex. 1970 Comment
  UC1133741  Juncus nevadensis A. Simontacchi 1940-6-7 894 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  HSC22875  Juncus orthophyllus John Pratt 1970-6-13 11 Lassen 1677 Comment
  UC1601833  Juncus parryi M. S. Baker and Frank Nutting 1894-7-30 Lassen Silve Lake Silver Lake Comment
  UC1133725  Juncus sphaerocarpus A. Simontacchi 1940-6-5 815 A Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC773861  Juncus tenuis L. R. Short and J. Warren 1936-6-10 S- 418 Lassen Burgess Spring Experiment Range. Comment
  CHSC117212  Juncus tiehmii Lowell Ahart; John Dittes 2016-6-7 20989 Lassen West edge of pond, near spillway 5 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
  RSA699964  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  RSA78920  Juniperus occidentalis E. K. Balls, P. C. Everett 1952-10-10 18141 Lassen 8 mi SE of ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UC1134311  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ene Chats; Sierraville Quad. 1569 Comment
  UC1136938  Juniperus occidentalis L. R. Short 1936-9-30 S- 508 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1828 Comment
  UCR162426  Juniperus occidentalis subsp. australis David A. Charlet 1991-8-7 909 Lassen East shore of Eagle Lake 1616 Comment
  CAS-BOT-BC81289  Juniperus osteosperma John Thomas Howell 1961-9-25 36969 Lassen East side of Beckwourth Pass 1554 Comment
  RSA597875  Juniperus osteosperma F. C. Vasek 1964-9-12 640912 -5 Lassen U.S. 395, 5.2 miles north of its junction with State 70 (U.S. alt. 40) 1479 Comment
  CHSC57200  Kelloggia galioides Mary Meyer 1980-7-21 Lassen Beneath white fir stand. 2103 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
  UC1374967  Kelloggia galioides Noel H. Holmgren, John J. Fay, and Barton L. Bethers 1970-6-24 4374 Lassen 2 mi w Westwood (at edge of airstrip) 1554 Comment
  SEINET12319533  Kelloggia galioides N. E. Heiken 1978-1 78 Lassen E shore of Mahogany L, S of Eagle L 2060 Comment
  UC7408  Kochia americana J. Burtt Davy Jun 17 1897-Jun 24 1897 3329 Lassen Honey Lake Valley 1219 Comment
  JEPS97318  Kochia scoparia Vernon H. Oswald and L. Ahart 1995-8-14 7172 Lassen T30N R15E center N side Sec. 15, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  CHSC91190  Koeleria macrantha Lowell Ahart; John Dittes 2005-6-1 11860 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1132160  Koeleria macrantha A. Simontacchi 1940-7-8 945 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC271328  Koeleria pyramidata Gary Schoolcraft 1983-6-29 1042 Lassen Along Hwy 139 near Upper McBride Sp. 1889 Comment
  CAS-BOT-BC271329  Koeleria pyramidata Clarence Quick 1963-7-12 63 -32 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  JEPS94084  Lactuca saligna Vernon H. Oswald and Lowell Ahart 1998-9-8 9574 Lassen Hwy. 299 at the R.R. overpass on e. side of Nubieber (near the hwy.) 1255 Comment
  JEPS127275  Lagophylla ramosissima Lowell Ahart, John Dittes 2016-7-13 21109 Lassen 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC106070  Lagophylla ramosissima subsp. ramosissima Lowell Ahart; John Dittes 2010-7-31 16997 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
  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
  SEINET8584733  Lappula redowskii var. cupulata W. Harnach 2010-6-1 1240 Lassen Honey Lake Valley, on Fort Sage Road then 1 mile N on Cal-Neva Road, Alturus powerline, ca 10 miles NE of Doyle. 1219 Comment
  CHSC99283  Lasthenia glaberrima Lowell Ahart; John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, along a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  OBI76935  Layia glandulosa Anthony Baniaga 2011-6-11 332 Lassen Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21 1623 Comment
  CAS-BOT-BC321491  Layia glandulosa Milo S. Baker 1936-6-16 8360 Lassen About 30 mi N of Susanville along Hwy 395. 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
  CHSC4847  Lemna minor R. Carter 1967-7-13 590 Lassen Along shore of Willow Creek. Comment
  RSA170169  Lemna minor W. L. Jepson 1918-8-16 8000 Lassen Merrillville 1524 Comment
  JEPS114851  Lemna minuta Lowell Ahart, John Dittes 2008-6-22 15022 Lassen On shallow water, south side of the levee, about 50 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
  SD117142  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek, at bridge on Highway 139, approximately10 miles north of Susanville. 1509 Comment
  CHSC112402  Lepidium appelianum Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18785 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  SFV1437  Lepidium appelianum I. L. Wiggins, D. B. Wiggins 1961-6-16 16529 Lassen 4.1 miles east of Bieber. 1265 Comment
  CHSC112401  Lepidium campestre Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18782 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC48334  Lepidium campestre Vernon Oswald 1986-5-28 2046 Lassen Hwy 36, 9.8 mi e of the Plumas-Lassen County line, 2.0 mi sw of Fredonyer Pass. Along the road. 1584 Comment
  CHSC112394  Lepidium chalepense Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC99531  Lepidium chalepense Lowell Ahart; John Dittes 2008-6-20 14978 -B Lassen Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  POM94542  Lepidium dictyotum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CAS-BOT-BC89168  Lepidium draba Louella Bass 1977-6-12 77 -4 Lassen Elysian Valley. Comment
  CAS-BOT-BC89720  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen On east side of road, Highway 395 to Lichtenfield, 4.7 miles south of Ravendale, Madelaine Plains. Comment
  CAS-BOT-BC12813  Lepidium perfoliatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49209 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CDA43003  Lepidium perfoliatum L. Ahart, John Dittes 2008-6-2 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
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Oct 5 2019
  JEPS95756  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
  UC1924234  Lepidium perfoliatum Debra Valov 2004-6-9 2004260 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  SEINET10448293  Lepidium perfoliatum Mary Susan Taylor 1982-5-29 Taylor 4565 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  CHSC61229  Leptosiphon ciliatus P. V. Caldwell 1972-6-29 260 Lassen Eagle Lake. Stream that runs into Upper Deans Meadow, on bank. Comment
  CHSC91188  Leptosiphon ciliatus Lowell Ahart; John Dittes 2005-6-2 11936 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  POM74002  Leptosiphon ciliatus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  SEINET7967451 Image available Leptosiphon ciliatus John Thomas Howell 1974-7-10 50560 Lassen Elysian Valley 1326 Comment
  CHSC44326  Leptosiphon harknessii Lowell Ahart; John Thomas Howell 1974-7-9 518 Lassen Along the edge of Eagle Lake Road, near the south-west side of Eagle Lake. 1584 Comment
  UCD159576  Leucanthemum vulgare D. S. Park 2011-6-27 313 Lassen Near Goodrich Mt. Between Rt. 36 and small stream. 1556 Comment
  CAS-BOT-BC334596  Leucanthemum vulgare Louella Bass 1978-7-11 78 -4 Lassen Elysian Valley 1325 Comment
  CHSC61192  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1993-5-12 5375 Lassen NE side of Hwy. 44, 1.6 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  NY962821  Leucophysalis nana N. H. Holmgren 1978-6-12 8936 Lassen 0.8 km (0.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale 1920 Comment
  UC1583992  Lewisia nevadensis G. Schoolcraft 1990-5-15 2044 Lassen 3 mi s Nubieber; John's Valley 1402 Comment
  UC803892  Leymus G. L. Stebbins Jr. 1949-8-6 4007 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  CAS-BOT-BC283769  Leymus cinereus Margaret Williams; Steven Williams 1974-7-26 74 -L-41 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  JEPS87470  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  RSA299613  Leymus cinereus J. T. Howell 1974-7-9 50495 Lassen Susanville; Sierra Nevada 1296 Comment
  RSA299171  Leymus triticoides J. T. Howell 1974-7-9 50467 Lassen Susanville 1296 Comment
  SEINET239973 Image available Leymus triticoides G. L. Clifton 1996-6-5 34630 Lassen East of Herlong close to the railroad. 1230 Comment
  UCD65610  Leymus triticoides L. Whitney 1933-8-5 s.n. Lassen Lassen National Forest. Near Slate Cr. 1889 Comment
  JEPS96064  Ligusticum grayi Vernon H. Oswald and Lowell Ahart 1996-8-1 8127 .1 Lassen s.-s.w. Westwood (ca. 2 mi. n. of Dyer Mt. Lookout, Forest Rd. 28N56 (D-line), on downhill side of rd.) 1737 Comment
  JEPS88528  Lilaea scilloides Vernon H. Oswald and Lowell Ahart 1996-6-24 7878 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), in Papoose Creek where it leaves the n end of the meadow, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  SEINET4690760  Lilaea scilloides B. L. Wilson, D. Lytjen 2005-7-28 11484 Lassen Deep creek enar confluence with a smaller stream 1359 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
  UC1101424  Limosella acaulis Herbert L. Mason and Verne Grant 1947-7-9 13293 Lassen 5 mi e Bieber Comment
  UC1567430  Limosella acaulis G. Schoolcraft 1989-7-24 1995 Lassen along n shore Said Valley Reservoir; n shore of Said Valley Reservoir 1630 Comment
  HSC20654  Limosella acaulis D. E. Anderson 1962-8-6 2332 Lassen Lake at foot of Tule Mtn. Comment
  CAS-BOT-BC246147  Limosella aquatica R. F. Thorne; C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir Comment
  CHSC99734  Limosella aquatica Lowell Ahart; John Dittes 2008-6-20 14927 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  CAS-BOT-BC332738  Linanthus R. F. Thorne; Larry E. DeBuhr 1975-8-22 46973 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  JEPS58271  Linanthus bolanderi J. G. Lemmon May 1878 Lassen Susanville Comment
  RSA0037003  Linanthus bolanderi Lowell A. Ahart, John Dittes 2008-6-19 14892 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC52823  Linanthus bolanderi M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. Comment
  JEPS58449  Linanthus harknessii W. L. Jepson 1918-8-5 7814 Lassen near South Fork Peak 1645 Comment
  SEINET12249488  Linanthus harknessii Unknown 1967-1 562 Lassen 1.75 mi W of Eagle Lake Biology Station 1585 Comment
  RSA170303  Linaria dalmatica T. C. Fuller 1963-7-15 10893 Lassen Along drainage way of n. facing slope, road to Pittville, 4.3 miles n.w. of Little Valley. Comment
  CDA6343  Linaria genistifolia subsp. dalmatica T. C. Fuller 1963-7-15 10893 Lassen Road to Pittville, 4.3 miles northwest of Little Valley. 0 Comment
  JEPS117582  Linum lewisii var. lewisii Lowell Ahart, John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  OBI77066  Lithophragma glabrum Anthony Baniaga 2011-6-7 316 Lassen Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  UC773886  Lithophragma glabrum L. R. Short 1936-4-28 S- 336 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  CAS-BOT-BC435430  Lithophragma glabrum Louella Bass 1975-4-15 22 Lassen Elysian Valley; Sierra Nevada 1325 Comment
  CHSC11773  Lithophragma tenellum Wayne O. Baum 1971-6-15 71 -1 Lassen South side of fire trail approx. 100 ft. from Rd. 5 at extreme S. E. corner of Gallatin Peak. 1920 Comment
  CHSC29956  Lithophragma tenellum Robin L. Ondricek 1978-5-25 25 Lassen 150 yds N of cafeteria at Eagle Lake Field Station. 1554 Comment
  UC1127235  Lithophragma tenellum A. Simontacchi 1940-5-10 693 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  CDA42915  Lithospermum arvense L. Ahart, John Dittes 2012-7-11 18351 Lassen 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. Comment
  SEINET12326115  Lithospermum californicum A. Seneres, Harold, N. 1983-1 104 Lassen Road 21 to Silver Lake. Lassen National Forest Comment
  JEPS107869  Lithospermum ruderale Lowell Ahart, John Dittes 2005-6-2 11932 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC1924198  Lithospermum ruderale Debra Valov 2005-8-21 2005231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1279 Comment
  HSC69589  Lithospermum ruderale Gary Schoolcraft 1979-6-19 67 Lassen W of Post Camp on N side of main road 1829 Comment
  SEINET10456166  Lithospermum ruderale Paul Gallian, David B. Dunn 1971-6-2 Gallian 463 Lassen 6 mi. N of Hallelujah Jct. on US Hwy 395. 1402 Comment
  SEINET8588539  Lomatium austiniae 2015-5-20 NV 030 -1059 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, go over median, right on Country lane, follow to end of road. 1520 Comment
  NY1160625  Lomatium macrocarpum N. H. Holmgren 1980-7-3 9487 Lassen U.S. Highway 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  SEINET7063559  Lomatium macrocarpum A. G. Vestal 1947-4-5 s.n. Lassen Hidden Valley south of Route 139. UTM Zone 11, 702975mE, 4478192mN. (WGS84/NAD83). 1295 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  UC1123086  Lomatium nevadense var. parishii A. Simontacchi 1940-5-14 709 A Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  POM78132  Lomatium nudicaule Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1123087  Lomatium nudicaule A. Simontacchi 1940-6-13 856 Lassen 3.3 mi. w.-s.w. Patterson Mt. (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  UC1137735  Lomatium nudicaule L. R. Short and Wm. Gansberg 1936-6-8 S- 399 Lassen Lassen Forest, Burgess Spring Exp. Range 1755 Comment
  CAS-BOT-BC217795  Lomatium ravenii B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6564 Lassen U.S. Hwy 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield 1330 Comment
  LA84781  Lomatium ravenii Tracy Call; Viola Call 1961-5-30 2048 Lassen about 2 mi. S of Ravendale 1462 Comment
  UC1177543 Image available Lomatium ravenii Peter H. Raven with Otto T. Solbrig 1958-6-17 13287 Lassen 1.8 mi. s. Ravendale (along U.S. Hwy. 395) Comment
  UC1228811 Image available Lomatium ravenii Lincoln Constance and Emil DiFulvio 1962-4-16 3747 Lassen 1 mi. s. Ravendale 1615 Comment
  UC1483812 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen S of Ravendale 1615 Comment
  CHSC112191  Lomatium roseanum Dean Wm. Taylor 2012-6-7 21235 Lassen Sierra Nevada. Diamond Mts.: Ridgetop 1 mile east of Diamond Peak. 2225 Comment
  CHSC29875  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-6 31 Lassen Ca. 1 mi from ELFS where the power lines cross the road. 1572 Comment
  CHSC117768  Lomatium vaginatum L. P. Janeway; B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  JEPS127567  Lomatium vaginatum L. P. Janeway, B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. Buckhorn Lake 7.5' Quad, Comment
  UC729645  Lonicera conjugialis Carl B. Wolf 1929-9-1 3786 Lassen between Grassy Lake and Snag Lake; Mt. Lassen National Park Comment
  CAS-BOT-BC200923  Lotus John Thomas Howell 1976-7-19 51953 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  GMDRC7741  Lotus corniculatus J. M. Andre, G. Clifton 1993-6-11 33422 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  JEPS126485  Lotus corniculatus Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-16 CA 350 -049 Lassen Take Smoke Creek Road to Sand Pass Road. Turn left at Parker Reservoir. Comment
  UC1776700  Lotus purshianus G. Schoolcraft 1992-8-11 2247 Lassen Along Hwy 395 near Janesville Grade intersec 1280 Comment
  POM253309  Lotus unifoliolatus A. A. Heller 1938-7-28 15300 Lassen Just east of Westwood. Comment
  RSA0028052  Lupinus John F. Emmel 1996-7-14 1426 Lassen Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle. 1305 Comment
  JEPS108147  Lupinus andersonii L. P. Janeway, B. Castro 2005-7-10 8482 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 & 28N02) and Road 28N01 1859 Comment
  CHSC27936  Lupinus angustiflorus M. S. Taylor 1974-6-20 314 Lassen Abundant around Crater Lake, Lassen National Park. Comment
  CHSC30579  Lupinus arbustus Sori H. Shad 1970-7-9 45 Lassen Found at edge of Dean's Meadow. 1828 Comment
  CHSC905  Lupinus arbustus R. Gein 1946-6-20 Lassen Mt. Fredonyer. 2133 Comment
  UCD35731  Lupinus arbustus Beecher Crampton 1960-6-18 5724 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  SEINET10490461  Lupinus arbustus subsp. arbustus Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 478 Lassen Ca 3 miles s of janesville at honey lake, rest area on us hwy 395; in Sagebrush-grass margin between jeffery pine-oak forest and honey lake 1250 Comment
  RSA59743  Lupinus arbustus subsp. calcaratus E. K. Balls 1950-5-19 14788 Lassen 14 miles west of Madeline on road from Adin. 1616 Comment
  SEINET10484728  Lupinus arbustus subsp. silvicola A. Arthur Heller 1938-6-4 Heller 15142 Lassen Rather common in the yellow pine forest in open places just w of fredonyer pass E of westwood. Transition life zone 1707 Comment
  CAS-BOT-BC208734  Lupinus argenteus var. heteranthus Walter Knight; Irja Knight 1981-5-20 4116 Lassen 27 miles S of Alturas Comment
  CAS-BOT-BC208737  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21501 Lassen Reserboir above Grasshopper Valley, Lassen Forest 1500 Comment
  CAS-BOT-BC208743  Lupinus argenteus var. heteranthus Roxana S. Ferris; Rena Duthie 1919-6-13 18 Lassen Madaline Comment
  CAS-BOT-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-BC208752  Lupinus argenteus var. heteranthus Gary Schoolcraft 1983-7-20 1098 Lassen S. slopes of Fredonyer Peak 2194 Comment
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline 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
  NY736932  Lupinus argenteus var. heteranthus J. Huber 1971-6-2 140 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  NY736987  Lupinus argenteus var. heteranthus M. Bourell 1997-5-31 5879 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  RSA795328  Lupinus argenteus var. heteranthus L. Ahart, John Dittes 2010-7-31 16977 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
  UC83091  Lupinus argenteus var. heteranthus T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  UCR270692  Lupinus argenteus var. heteranthus John F. Emmel 1999-6-5 1631 Lassen Honey Lake Basin, north end of Fort Sage Mountains, east base of Turtle Mountain 1280 Comment
  CHSC106591  Lupinus argenteus var. meionanthus C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC91927  Lupinus argenteus var. meionanthus L. P. Janeway; B. Castro 2005-7-10 8477 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  CDA43214  Lupinus caudatus subsp. caudatus Jeffery Huber 1971-6-2 145 Lassen 6 miles north of Hallelujah Junction on US Highway 295. 0 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
  SEINET249342  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
  SEINET5332986  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy 395, ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC1129510  Lupinus lepidus var. confertus H. S. Yates 1936-8-11 6071 Lassen Baxter Creek; Susanville Quadrangle, Baxter Creek Comment
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  UC572381  Lupinus lepidus var. confertus H. S. Yates 1936-8-11 6071 Lassen Baxter Creek; Susanville Quadrangle, Baxter Creek Comment
  CHSC66243  Lupinus lepidus var. sellulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7867 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  JEPS103203  Lupinus leucophyllus G. Schoolcraft 1994-6-9 2347 Lassen 1 1/2 mile NE of Hwy 139 on Grasshopper-Termo Road 1615 Comment
  SEINET10488726  Lupinus leucophyllus Charles Piper Smith 1947-6-13 Smith 47448 Lassen Highway 299, adin, 1.3 mi west Comment
  UC199306  Lupinus microcarpus var. microcarpus Franklin P. Nutting Lassen Dixey Mts. South side Comment
  CAS-BOT-BC323945  Lupinus nevadensis M. S. Taylor 1982-5-29 4567 Lassen Along dirt road paralleling Hwy 395, on its E side, ca 0.5 mi N of Hwy 395 jct with Scott Rd, ca. 20 mi N of Reno. Comment
  JEPS103164  Lupinus nevadensis Beth Corbin 2002-4-11 1056 Lassen Skedaddle Ranch Rd, W of Skedaddle Ck, .5 mi NE of Spencer Ck Rd. 1310 Comment
  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
  SEINET10450707  Lupinus nevadensis Taylor 1982-5-29 Taylor 4567 Lassen In sage brush scrub along dirt rd parallelling hwy. 395, On its e side, ca 1/2 Mi n of hwy. 395 Jct with scott rd, ca 20 mi n of reno. With castilleja. Comment
  SEINET10452155  Lupinus nevadensis Mary Susan Taylor 1982-5-29 Taylor 4567 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  UC138031  Lupinus onustus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  POM24043  Lupinus polycarpus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SCFS2168  Lupinus polyphyllus var. burkei L. Loeblich 1964-6-30 63 Lassen 17.6 mi N of Susanville on Hwy 139 in ditch 2 m E of hwy 488 Comment
  HSC69591  Lupinus pusillus subsp. intermontanus Gary Schoolcraft 1980-5-30 246 Lassen On S side of road into Diaz Ranch at N end of Mud Flat 1360 Comment
  RSA263046  Lupinus sellulus subsp. sellulus B. J. Cox 1971-6-11 3179 Lassen 8 mi. W. of Susanville, on Calif. Hwy. 36. 1555 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
  UC429126  Luzula comosa var. laxa Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  HSC93435  Lythrum portula Vernon H. Oswald, L. Ahart 1996-8-1 8104 Lassen Mtn. Meadows Reservoir SW of Westwood, receding shore NE of Indian Ole Dam 1540 Comment
  CAS-BOT-BC343697  Madia elegans John Thomas Howell 1974-7-10 50556 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC343694  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia 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
  UC89366  Madia exigua T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  CAS-BOT-BC334690  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC508541  Maianthemum racemosum subsp. amplexicaule Alice Eastwood 1912-8-22 1787 Lassen Trail from Morgans Springs to Sulphur Works Comment
  CAS-BOT-BC347438  Malacothrix floccifera Clare B. Hardham 1969-8-28 17422 Lassen Slope west of Janesville Comment
  CAS-BOT-BC347439  Malacothrix floccifera Louella Bass 1974-7-1 EV 153 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC347440  Malacothrix floccifera Louella Bass 1983-6-2 s.n. Lassen On Sears Road near Janesville Comment
  CHSC7775  Malva neglecta Beverly J. Wise 1969-5-26 68 Lassen Susanville - 833 Mark St. 1310 Comment
  JEPS124804 Image available Malva neglecta Peter Schultz 1967-7-2 172 Lassen 1 mile south of Milford city limit. Highway 395. Comment
  UC1192360  Marsilea Verne Grant and Irving Schneider 1947-7-31 8219 Lassen irrigation ditch running sw into State Fish and Game nesting area on w end Section 19 Madeline Plain Comment
  CAS-BOT-BC71144  Marsilea Clarence R. Quick 1962-6-17 62 -26 Lassen Swains Hole, south of Blacks Mountain Experimental station 1554 Comment
  CHSC13512  Marsilea vestita K. R. Stern 1974-6-26 Lassen On s side of Hwy 44, 5.6 mi n of intersection with County Rd. A-21 to Westwood. Comment
  CHSC7653  Matricaria discoidea Jesse Langdon 1969-6-3 26 Lassen Susanville, Soil Conservation Office. 1310 Comment
  JEPS114634  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-20 14911 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS93831  Matricaria discoidea Vernon H. Oswald and Lowell Ahart 1998-6-4 9138 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  SEINET10474309  Matricaria matricarioides Mary Susan Taylor 1982-8-19 Taylor 5025 A Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  SCFS2169  Medicago sativa H. Naqui 1965-7-13 130 Lassen PCT dunes [?] bridge, Hwy 139 1402 Comment
  UCD107934  Medicago sativa P. B. Kennedy 1927-9-1 s.n. Lassen Standish. Comment
  UC972186  Melica fugax Milo S. Baker 1952-4-24 12411 Lassen ca 15 mi e Chester (at old road quarry) Comment
  CHSC80722  Melica stricta V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10037 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  SJSU11391  Mentha arvensis J. W. Tilden 1960-6-27 1521 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CHSC71128  Mentzelia albicaulis Vernon H. Oswald 1998-5-22 9137 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  CHSC93683  Mentzelia albicaulis Lowell Ahart; John Dittes 2005-6-1 11888 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  JEPS29743  Mentzelia albicaulis Rimo Bacigalupi and L. R. Heckard 1962-5-28 8498 Lassen 2.7 mi n Milford (along U.S. highway 395) 1219 Comment
  JEPS124817 Image available Mentzelia albicaulis N. L. Rechen 1964-7-1 73 Lassen 1 mile north of Susanville. H. 139 Comment
  CHSC91323  Mentzelia congesta Lowell Ahart; John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  JEPS87411  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  RSA715551  Mentzelia congesta L. Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  CHSC92643  Mentzelia dispersa L. P. Janeway 2005-7-4 8470 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  RSA715543  Mentzelia dispersa L. Ahart 2005-6-1 s.n. Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC506973  Mentzelia dispersa George A. Fischer, Irwin H. Johnson 1933-7-12 F 229 Lassen Lassen Forrest, Patterson Flat 1737 Comment
  JEPS88213  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1996-6-17 7772 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville 1432 Comment
  RSA719900  Mentzelia dispersa Michael A. Vincent, K. Levings 2006-7-29 12904 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  RSA0034475  Mentzelia laevicaulis Geo. R. Julian 1962-8-3 s.n. Lassen California Highway #139 north of Susanville. Comment
  UC420650  Mentzelia montana T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  RSA202434  Mentzelia montana Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of Likely) 1905 Comment
  CHSC7719  Mertensia ciliata var. stomatechoides Clarence Ash 1969-5-21 2 Lassen Diamond Mountain, distance from Susanville undetermined. 1828 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
  OBI77064  Micranthes aprica Anthony Baniaga 2011-6-5 308 Lassen Lassen NF. Pine Crk Valley N side. Pine Crk Valley quad. T32N R8E sec 35 SW of SW 1726 Comment
  NY539941  Micromonolepis pusilla A. Tiehm 1986-5-12 10351 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek 1341.1 Comment
  SEINET10800109  Microseris laciniata Katherine L. Morris, Douglas G. LeDoux; David B. Dunn 1973-5-25 Morris 223 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi. N of Jct. 36 & Hwy 44. Comment
  CHSC60877  Microseris laciniata subsp. laciniata Vernon H. Oswald; Lowell Ahart 1993-7-8 5670 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  SEINET11601923 Image available Microseris laciniata subsp. laciniata D. W. Taylor 19519 Lassen Pittville; County Road 404 4.5 road miles traveling south therefrom; uncultivated rocky plain southwest of the road bend 1006 Comment
  UC1609228  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  SEINET11601925 Image available Microseris laciniata subsp. siskiyouensis G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area S. of TulePatch Spring Comment
  CAS-BOT-BC349301  Microseris nutans James Jokerst 1983-7-25 1887 Lassen Near Madeline Plains 1614 Comment
  HSC28899  Microseris nutans D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19168 Lassen 3 mi. N of Westwood Comment
  RSA702595  Microseris nutans L. P. Janeway 2004-6-26 8152 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
  UC1070116  Microseris nutans Robert W. Gardner 1937-6-16 G- 14 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  CDA8392  Microseris nutans T. C. Fuller 1963-6-1 10631 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  RSA122925  Microsteris gracilis subsp. humilis L. R. Short, Wm. Gansberg 1936-6-2 S- 363 Lassen Lassen [National] Forest. MDM, Burgess Spr. Exp. Range 1860 Comment
  RSA104220  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 21757 Lassen Sage brush flat about Lassen County: 8 miles S of Madeline 1280 Comment
  JEPS88205  Mimulus breweri Vernon H. Oswald and Lowell Ahart 1996-6-24 7866 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, on the W side of the meadow ca. 0.2 mi S of the cabin. 1633 Comment
  UC1778583  Mimulus evanescens S. E. Schoenig 1998-7-5 98 -70 Lassen SW shore of Moll Reservoir, 2 meters from waters edge. 1499 Comment
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May 29 2009
  CHSC117277  Mimulus guttatus Lowell Ahart; John Dittes 2016-7-15 21224 Lassen On the west side of the road about 600 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS10455  Mimulus guttatus W. L. Jepson 1939-8-11 19374 Lassen Milford 1280 Comment
  UC27028  Mimulus guttatus Mrs. C. C. Bruce June 1898 2276 Lassen Shumway Comment
  UC526139  Mimulus guttatus John Thomas Howell 1934-7-9 12518 Lassen Bridge Creek Spring Comment
  JEPS2648 Image available Mimulus jepsonii W. L. Jepson 1910-6-10 4112 Lassen Twin Lakes (Grassy Lake); ; Twin Lakes (Grassy Lake), Lassen Co. 2225 Comment
  UC699729  Mimulus moniliformis Farris Farris 1936-6-10 Lassen Diamond Mountain 1828 Comment
  RSA447975  Mimulus moschatus var. moniliformis Christopher Davidson 1974-7-25 2496 Lassen Lassen Volcanic National Park. 1982 Comment
  CDA38387  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen By south side of Highway 44, vicinity of Bogard Campground. Comment
  HSC22960  Mimulus nanus var. mephiticus John Pratt 1970-7-11 76 Lassen At base of Dyer Mtn lookout tower. Comment
  HSC63954  Mimulus nanus var. mephiticus Teresa Prendusi 1980-7-1 Lassen Champ's Flat 1707 Comment
  RSA536391  Mimulus pygmaeus Beth Corbin 1991-6-10 621 Lassen Pine Creek at Little Harvey Valley 8 miles NE of USFS Bogard Work Center. 1700 Comment
  CAS-BOT-BC9536  Mimulus rubellus Clarence Roy Quick 1962-6-17 62 -21 Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  UC1063539  Mimulus suksdorfii A. Simontacchi 1940-5-14 716 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  UCR268963  Monardella odoratissima subsp. glauca Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31425 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  CAS-BOT-BC213930  Monardella odoratissima subsp. pallida M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Mts. s of Eagle Lake Comment
  CHSC45231  Monardella odoratissima subsp. pallida P. V. Caldwell 1972-7-8 269 Lassen Eagle Lake. Rd 32N02 about 2 mi from Summit Camp. Comment
  UC124967  Monardella odoratissima subsp. pallida T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CHSC75490  Monolepis nuttalliana Vernon H. Oswald; Lowell Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  UC1602197  Monolepis nuttalliana M. S. Baker and Frank Nutting 1894-7-2 Lassen s. side Dixey Mts. Dixey Mts. Comment
  SDSU5609  Monolepis nuttalliana D. F. Howe 1964-7-31 3903 Lassen Modoc National Forest 10.2 miles from entrance on road from Likely. 1768 Comment
  CAS-BOT-BC444695  Montia chamissoi Louella Bass 1973-6-17 123 Lassen Elysian Valley. 1325 Comment
  JEPS94476  Montia linearis Vernon H. Oswald and Lowell Ahart 1997-5-27 8497 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling the road); Forest Route 38N04 1546 Comment
  CAS-BOT-BC262635  Muhlenbergia asperifolia John Thomas Howell 1973-7-10 49801 Lassen Hwy. 395, 4 miles north of Doyle Comment
  POM172678  Muhlenbergia asperifolia Franklin P. Nutting s.n. Lassen Eagle Lake. Comment
  SEINET7297179 Image available Muhlenbergia asperifolia John Thomas Howell, Gordon H. True 1973-1 50147 Lassen Roadside in Mountain Meadows east of Westwood 1554 Comment
  UC188911  Muhlenbergia asperifolia Milo S. Baker Lassen Eagle Lake Comment
  CAS-BOT-BC260595  Muhlenbergia filiformis G. Schoolcraft 1997-7-30 2623 Lassen W slope of Diamond Mountain 1889 Comment
  RSA256304  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6237 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  UC163551  Muhlenbergia jonesii Milo S. Baker Lassen Eagle Lake Comment
  RSA0115568  Muhlenbergia richardsonis Jim M. Andre, G. Clifton 1993-6-11 33424 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale. 1545 Comment
  UC1101591  Muhlenbergia richardsonis Malcolm A. Nobs and S. Galen Smith 1949-7-21 1060 Lassen 4 mi n Madeline (shallow marshy stream from springs) Comment
  UC1132396  Muhlenbergia richardsonis Robert W. Gardner 1939-7-10 G- 35 Lassen Grass Valley Halls Flat Quadrangle Comment
  UC507007  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F- 196 Lassen Dry Lake Lassen <National> Forest, Grass Valley 1694 Comment
  SACT001607  Muhlenbergia squarrosa Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  CHSC71134  Muilla transmontana Vernon H. Oswald; Lowell Ahart 1998-5-22 9133 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  RSA377621  Muilla transmontana Christopher Davidson 1975-6-7 2762 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CAS-BOT-BC83317  Myosurus minimus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49217 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC83320  Myosurus minimus James Jokerst 1983-7-25 1890 Lassen Near Madeline Plains. 1614 Comment
  CHSC68760  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1997-5-27 8518 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy.139. 1682 Comment
  CHSC99498  Myosurus minimus Lowell Ahart; John Dittes 2008-6-20 14940 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
  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
  UC72894  Myosurus minimus Milo S. Baker 1894-7-1 Lassen Dixie Mts Comment
  POM93121  Myriophyllum hippuroides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UCR153449  Myriophyllum sibiricum R. F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139 1646 Comment
  JEPS28701  Myriophyllum sibiricum George W. Gillett 1957-7-28 920 Lassen E shore Butte Lake, Lassen Volcanic National Park. 1844 Comment
  CHSC65036  Nama aretioides var. californica Vernon H. Oswald; Lowell Ahart 1995-7-5 6955 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy 395. 1383 Comment
  RSA0043136  Nama aretioides var. californica Christopher Davidson 1975-6-7 2760 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA0084057  Nama aretioides var. californica Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC60745  Nama densa var. densa Vernon H. Oswald; Lowell Ahart 1993-6-14 5539 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). In dry sand between clumps of brush on the N side of the road. 1566 Comment
  UC735057  Nama densa var. parviflora Lincoln Constance 1946-7-3 3099 Lassen 7 mi n of Spaldings (northern edge of Eagle Lake); northern edge of Eagle Lake 1676 Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  NY1012731  Navarretia breweri N. H. Holmgren 1980-7-3 9491 Lassen Rye Patch Canyon road, 3.4 km (2.1 miles) east of U.S. Highway 395, 14.5 km (9 miles) airline distance southeast of Ravendale 1700 Comment
  UC1116681  Navarretia breweri Beecher Crampton 1961-6-20 5737 Lassen 6.5 mi n Bogard Ranger Station; Lassen National Forest, Little Harvey Valley 1676 Comment
  UC133863  Navarretia breweri Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC1609320  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-28 5592 Lassen 1.7 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley) 1719 Comment
  UCD34872  Navarretia breweri Beecher Crampton 1964-6-26 7088 Lassen Lassen County, ca. 3.5 miles N.W. of Susanville, Gray's valley 3 miles N.W. of Bogard Ranger Station. Comment
  UC1124159  Navarretia divaricata A. Simontacchi 1940-5-28 777 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  JEPS114395  Navarretia intertexta Lowell Ahart, John Dittes 2008-6-22 15028 Lassen about 120 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  POM74438  Navarretia intertexta Marcus E. Jones 1897-6-18 10111 Lassen Chat. 1524 Comment
  CHSC117215  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2016-6-7 20995 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC82196  Navarretia intertexta subsp. propinqua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6051 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC1184059  Navarretia intertexta subsp. propinqua Jean Langenheim 1957-6-22 4366 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  SJSU11522  Navarretia intertexta subsp. propinqua J. W. Tilden 1960-6-27 1519 Lassen by Moonlight Rd 5 mi E of Westwood 1524 Comment
  CHSC4760  Navarretia leptalea R. Carter 1967-7-14 615 Lassen Roadside on N side of rd. Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  CHSC6202  Navarretia leptalea J. B. Kimsey 1946-6-26 Lassen Pine Creek, Eagle Lake. 1615 Comment
  JEPS69637  Navarretia leptalea subsp. leptalea Brown and Wieslander 1922-8-20 86 Lassen Martin Sprs. Eagle Lake Comment
  JEPS19812  Navarretia leucocephala Rimo Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  JEPS19814  Navarretia leucocephala subsp. minima Rimo Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  POM75594  Navarretia leucocephala subsp. minima Marcus E. Jones 1897-6-18 10107 Lassen Chat. 1524 Comment
  RSA0035408  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 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
  UC1228161  Navarretia leucocephala subsp. minima Beecher Crampton 1960-6-20 5731 Lassen 0.5 mi s Black Mtn. exper. Sta. U.S.D.A. Forest Service (11 mi nw Bogard Ranger Sta); Lassen National Forest 1706 Comment
  UC1537488  Navarretia leucocephala subsp. minima Gordon H. True Jr. 1936-6-25 528 Lassen e of Harvey Ranger Station; Harvey Valley 1706 Comment
  UC908650  Navarretia leucocephala subsp. minima Lincoln Constance 1946-7-3 Lassen Madeline Station Comment
  RSA67607  Navarretia sinistra Verne Grant, Alva Grant 1950-7-13 8941 Lassen Above Fredonyer Camp on road from Westwood to Susanville 1524 Comment
  UC1137711  Nemophila parviflora var. austiniae L. R. Short and J. Warren 1936-6-9 S- 404 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1844 Comment
  CAS-BOT-BC231218  Nemophila parviflora var. austiniae Philip A. Munz 1947-5-18 11860 Lassen Fredonyer Forest Campground on Highway 36, W of Susanville 1508 Comment
  RSA122626  Nemophila parviflora var. austiniae L. R. Short, J. Warren 1936-6-9 S- 404 Lassen Burgess Spring Experiment Range. 1845 Comment
  JEPS114643  Nemophila pedunculata Lowell Ahart, John Dittes 2008-6-20 14918 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA0043177  Nemophila pedunculata L. Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  UC606930  Nemophila pedunculata L. Constance 1938-6-10 2323 Lassen 2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); sw of Fredonyer Pass, McKenzie Meadows 1524 Comment
  CHSC65042  Neoholmgrenia andina Vernon H. Oswald; Lowell Ahart 1995-7-5 6959 Lassen Modoc Plateau. North of Honey Lake at Bull Flat on Smoke Creek Ranch Rd., 10.3 mi e of Hwy. 395. At roadside. 1432 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
  HSC68171  Nestotus stenophyllus J. P. Smith, J. O. Sawyer 1971-5-23 4659 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  CHSC5920  Nicotiana attenuata J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Horse Lake. 1554 Comment
  SJSU11381  Nicotiana attenuata M. R. Kempf 1965-7-12 294 Lassen Eagle Lake 1584 Comment
  POM103204  Nitrophila occidentalis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  SEINET4174378  Nitrophila occidentalis Unknown unknown s.n. Lassen 2 mi SW of Wendel Comment
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 Comment
  UC1070117  Nothocalais troximoides A. Simontacchi 1940-5-17 732 Lassen 5.7 mi ssw Patterson Mountain; Halls Flat Quad. Comment
  UC584293  Nothocalais troximoides G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2309 Lassen w Milford; crest of range head of Stony Ridge 1950 Comment
  HSC22878  Oenothera deltoides John Pratt 1970-6-14 16 Lassen East of Janesville Comment
  CHSC12954  Oenothera deltoides subsp. piperi K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5803 Lassen Field on w side of Janesville Rd., ca. 0.1 mi w of turnoff from Hwy. 395, ca. 11 mi se of Susanville. 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
  SJSU10936  Oenothera deltoides subsp. piperi G. R. Ostrander 1965-7-12 70 Lassen by Hwy 395, 5 mi N of Doyle 1158 Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 Comment
  SEINET5345714  Oenothera deltoides var. piperi P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  UCR71445  Oenothera elata subsp. hirsutissima Barbara Ertter 1987-7-24 7304 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  RSA516978  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  SEINET8884758  Olsynium douglasii R. Mills 1956-4-29 13 Lassen 7 miles south of Susanville, , along a creek bed on south side of hill. 1279 Comment
  CHSC29904  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 33 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  SEINET6188292  Oreocarya schoolcraftii G. Schoolcraft 1999-7-12 2858 Lassen N. of Tuledad Canyon near NV stateline. 1737 Comment
  CAS-BOT-BC350042  Oreostemma alpigenum var. andersonii Hans Leschke 1958-9-30 1571 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  OBI75869  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
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  UC2027324  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen National Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mountain quadrangle Comment
  CAS-BOT-BC350041  Oreostemma alpigenum var. andersonii Hans Leschke 1959-8-3 1595 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  HSC93438  Oreostemma elatum Vernon H. Oswald 1996-8-1 8120 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  CHSC29921  Orobanche corymbosa Robin L. Ondricek 1978-6-27 76 Lassen At Brockman Flat Lava Beds. 1584 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
  UC1609174  Orobanche uniflora subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5615 Lassen N of Highway 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. Comment
  CAS-BOT-BC500270  Orobanche uniflora subsp. occidentalis Doris Kildale Gillespie 1930-5-13 9368 Lassen Between Susanville and Janesville Comment
  SD52193  Orthocarpus copelandii var. cryptanthus F. Stephens 1894-7-15 8115 Lassen Bunch Grass Spring Comment
  UCD18956  Orthocarpus cuspidatus subsp. copelandii Raymond D. Ratliff 1965-7-17 21 Lassen Lassen National Forest, Lyon's hgd., Harvey Valley Allot. 1706 Comment
  CHSC23505  Orthocarpus cuspidatus subsp. cryptanthus Wayne O. Baum 1970-7-7 70 -2 Lassen Top of Gallatin Peak. 2117 Comment
  UC1137581  Orthocarpus cuspidatus subsp. cryptanthus A. Simontacchi 1940-7-8 926 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1137684  Orthocarpus cuspidatus subsp. cryptanthus L. R. Short and J. Warren 1936-6-23 S- 453 Lassen Burgess Spr. Exp. Range; Lassen Forest, Burgess Spr. Exp. Range 1804 Comment
  RSA0089259  Orthocarpus purpurascens Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  UC1483840  Osmorhiza berteroi G. Schoolcraft 1979-8-2 178 Lassen Tule Mountain; top, Bureau of Land Management 2133 Comment
  OBI75887  Osmorhiza berteroi Anthony Baniaga 2011-8-16 501 Lassen Lassen Natl Forest. Just N of intersection 32N10H with F.S. 10. Red Cinder quad T30N R8E sec 18 NW of NW 1905 Comment
  RSA616541  Oxytheca dendroidea G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border Comment
  NY404460  Oxytheca dendroidea subsp. dendroidea G. Schoolcraft 1985-7-29 1493 Lassen West slopes of Fort Sage Mountains; 26-17-27 1585.0 Comment
  HSC68931  Packera eurycephala Gary Schoolcraft 1980-6-5 251 Lassen N base of Snowstorm Mtn. 1585 Comment
  CAS-BOT-BC316858  Packera eurycephala var. eurycephala C. C. (Mrs.) Bruce 1898-6-1 2176 Lassen Shumway Comment
  CAS-BOT-BC316859  Packera eurycephala var. eurycephala Michael A. Vincent 1999-6-9 8581 Lassen Along US Rte. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  JEPS25533  Packera eurycephala var. eurycephala Rimo Bacigalupi with Lincoln Constance 1959-6-16 7147 Lassen 3.7 mi s junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  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
  POM99648  Paeonia brownii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  NY1092251  Panicum capillare A. Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel. 1220 Comment
  UC149529  Panicum capillare J. Burtt Davy Jun 17 1897-Jun 24 1897 3346 Lassen Honey Lake Valley Comment
  CDA5490  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  CHSC91320  Pectocarya penicillata Lowell Ahart; John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  SEINET13352677  Pectocarya penicillata A. Tiehm 1980-1 5753 Lassen N end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  UC1258487  Pectocarya penicillata G. Schoolcraft 1980-5-8 231 A Lassen e Herlong; Bureau of Land Management 1219 Comment
  SBBG68675  Pedicularis attollens S. W. Hutchinson -Jun-1925 1092 Lassen Eagle Lake 1554 Comment
  SBBG7089  Pedicularis attollens H. and M. Dearing 1938-7-1 2238 Lassen 12 mi W of Susanville Comment
  SD6612  Pedicularis attollens Mrs. R. M. Austin 1882-8-9 Lassen Kings Valley Comment
  JEPS94553  Pedicularis groenlandica Vernon Oswald and Lowell Ahart 1997-6-24 8652 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CHSC5004  Pedicularis semibarbata K. C. Newman 1967-7-14 80 Lassen Collected near Silver Lake, along the road just past the picnic area in dry soil. 1828 Comment
  UC1063371  Penstemon deustus A. Simontacchi 1940-6-4 795 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  SD77352  Penstemon deustus Francis W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1096 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
  JEPS107844  Penstemon deustus var. pedicellatus Lowell Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  UC477496  Penstemon deustus var. pedicellatus A. G. Brenneis 1928-7-3 12 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 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
  JEPS11269  Penstemon gracilentus Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  NY600719  Penstemon gracilentus A. M. Alexander 1946-8-13 5157 Lassen West side of Eagle Lake Comment
  UC1483843  Penstemon gracilentus G. Schoolcraft 1979-7-3 110 Lassen 4.3 mi up the road from Observation Peak (near Curlleaf Mtn.); up rd from Obseration Peak, near Curlleaf Mtn. 2133 Comment
  UC477494  Penstemon gracilentus A. G. Brenneis 1928-7-3 9 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  HSC93439  Penstemon neotericus Vernon H. Oswald, L. Ahart 1996-8-1 8118 Lassen Junction of FS Rd. 28N56 (D-Line) and the spur road to Indian Ole Dam on Mtn. Meadows Reservoir, SW of Westwood 1537 Comment
  RSA21708  Penstemon neotericus Carl B. Wolf 1937-8-7 9068 Lassen Northern Sierra Nevada. Red Bluff -Susanville Road, 11.5 mi E of Chester. 1494 Comment
  SBBG28997  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen E of Westwood 1493 Comment
  CAS-BOT-BC239221  Penstemon newberryi var. berryi Clare B. Hardham 1969-8-28 17449 Lassen West of Janesville Comment
  CAS-BOT-BC239222  Penstemon newberryi var. berryi C. R. Quick 1964-7-11 64 -77 Lassen Humboldt Summit ne. of Janesville & Butte Mdws. 2011 Comment
  CAS-BOT-BC383112  Penstemon newberryi var. newberryi Andrew Townesmith; Karen M. Meyer 2007-7-22 843 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  JEPS7416  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen on Highway #36, 2 mi e Fredonyer Pass; e of Fredonyer Pass 1645 Comment
  NY641730  Penstemon roezlii R. G. Olmstead 1984-6-27 582 Lassen 10.3 miles east from U.S. 395 pm Rye Patch Canyon road. 1603.3 Comment
  UC1924562  Penstemon roezlii Debra Valov 2006-5-29 2006034 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1294 Comment
  UC887288  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen e Fredonyer Pass; e of Fredonyer Pass 1645 Comment
  JEPS128128  Penstemon rydbergii Catherine Bauer with Ellen Bauer Benson 2017-8-18 25 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC239500  Penstemon rydbergii var. oreocharis John Thomas Howell 1934-7-7 12460 Lassen Board Ranger Station Comment
  CHSC30583  Penstemon rydbergii var. oreocharis Leonard Walk 1972-6-29 48 Lassen Dean's Meadow on S. side of pond. 1981 Comment
  CHSC30588  Penstemon rydbergii var. oreocharis Marc Held 1972-6-29 23 Lassen South end of Dean's Meadow. Comment
  JEPS6627  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen along Highway #36 one mi e Westwood; e of Westwood 1524 Comment
  RSA0059628  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2011-6-20 17502 Lassen 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
  UCSB6193  Penstemon rydbergii var. oreocharis Heller, A. 1938-6-23 Lassen East of Westwood 1493 Comment
  CHSC23549  Penstemon speciosus W. O. Baum 1971-6-28 25 Lassen S. slope of Gallatin Peak. 2042 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
  RSA401878  Penstemon speciosus Rockwell 1925-07 s.n. Lassen Eagle Lake. Comment
  UC1012478  Penstemon speciosus Francis W. Pennell 1940-6-9 25753 Lassen Route 395, 5 mi n Madeline; n of Madeline 1676 Comment
  UC614464  Penstemon speciosus L. Constance 1938-6-11 2331 Lassen 3.5 mi n Secret Valley (Madeline Plains on Susanville-Alturas road); n of Secret Valley, Madeline Plains 1524 Comment
  NY661063  Penstemon speciosus D. D. Keck 1935-6-25 3768 Lassen Ca. 2 miles west of Westwood on road to Chester at Co. line. Comment
  RSA121811  Penstemon speciosus G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 220 Lassen Lassen Forest. 1707 Comment
  JEPS94561  Penstemon sudans Vernon Oswald and Lowell Ahart 1997-6-24 8599 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 Comment
  NY661797  Penstemon sudans G. W. Gillett 1953-7-13 274 Lassen Fredonyer Pass, Highway 36. One mile east of pass. 1706.9 Comment
  NY661801  Penstemon sudans D. D. Keck 1930-7-23 948 Lassen Susanville 1280.2 Comment
  UC1036207  Penstemon sudans George W. Gillett 1953-7-13 274 Lassen Highway 36 one mi e Fredonyer Pass; Lassen National Forest, e of Fredonyer Pass 1706 Comment
  UC423647  Penstemon sudans David D. Keck 1930-7-23 953 Lassen 4 mi w Susanville; Sierra Nevada 1463 Comment
  CAS-BOT-BC239691  Penstemon venustus Karl A. Vincent 1987-6-25 4436 Lassen Sierra Nevada, SE side of Fredonyer Butte; steep gravelly roadbank along N side of CA 36 ca 11.5 mi WSW of Susanville, E of Fredonyer Pass 1584 Comment
  HSC100162  Peraphyllum ramosissimum J. P. Smith, & J. O. Sawyer 2011-8-14 13377 Lassen Along service road, 1.8 mi. from Hwy. 395. 1541 Comment
  UC565390  Peraphyllum ramosissimum Junea Kelly 1937-5-30 Lassen Mapes Comment
  JEPS107969  Perideridia bolanderi Lowell Ahart, John Dittes 2005-6-1 11916 Lassen Along a small wash, on the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  NY1102238  Perideridia bolanderi subsp. bolanderi W. W. Eggleston 1911-5-29 6704 Lassen Vicinity of Doyle Station Comment
  SEINET12120566  Perideridia gairdneri Unknown 1978-1 3 Lassen Papoose Creek, SE corner of Eagle L 1585 Comment
  SEINET12121439  Perideridia gairdneri Unknown 1978-1 62 Lassen Papoose Creek ca 1 km S of Gallatin Beach, S end of Eagle L 1585 Comment
  JEPS117580  Perideridia lemmonii Lowell Ahart, John Dittes 2010-7-31 16991 Lassen On the south side of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1523773  Perideridia oregana Gary Schoolcraft 1971-7-13 503 Lassen near Silva Flat 1719 Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley 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
  CHSC41840  Persicaria P. V. Caldwell 1972-7-12 281 Lassen Eagle Lake. Growing along entire length on Papoose Creek on the muddy banks. Comment
  UCD149828  Persicaria amphibia Al Jennings 1963-7-10 s.n. Lassen Lassen County. Honey Lake Refuge. Comment
  CHSC59095  Persicaria lapathifolia Vernon H. Oswald; Lowell Ahart 1992-8-25 5189 Lassen Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  UC1069415  Phacelia A. Simontacchi 1940-6-24 849 Lassen 0.2 mi nnw Halls Flat; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS25529  Phacelia adenophora Rimo Bacigalupi with Lincoln Constance 1959-6-16 7143 Lassen US Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside road) 1341 Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  RSA38630  Phacelia adenophora P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale. 1341 Comment
  SD131633  Phacelia adenophora Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11701 Lassen S side of Schaffer Mt, W of Hwy 395 from Susanville to Alturas, 3.4 mi N of Wendel Rd 1387 Comment
  SJSU14070  Phacelia adenophora W. Savage 1964-6-30 337 Lassen by Hwy 89, 11 mi N of Susanville Comment
  POM98589  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen Madeline Plain. Comment
  SEINET5536525  Phacelia adenophora G. Schoolcraft 1980-6-5 252 Lassen Northeast side of Snowstorm Mtn. 1585 Comment
  UC1523735  Phacelia hastata Gary Schoolcraft 1981-6-15 462 Lassen Ash Valley 1584 Comment
  UC726924  Phacelia hastata A. A. Heller 1941-6-24 16192 Lassen 3 mi e Bieber Comment
  UCD120478  Phacelia hastata John Thomas Howell 1934-7-8 12480 Lassen Champ's Flat. Comment
  CHSC91193  Phacelia heterophylla subsp. virgata Lowell Ahart; John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction. 1512 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
  CHSC80207  Phacelia humilis Jeanne Boze 1981-6-13 113 Lassen On northeast slope of Gallatin Peak. 2011 Comment
  JEPS2120  Phacelia humilis Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  NY1057845  Phacelia humilis B. J. Ertter 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  SBBG64984  Phacelia humilis E. Rockwell -Jun-1925 393 Lassen Eagle Lake 1554 Comment
  SEINET10497016  Phacelia humilis Mary Susan Taylor 1974-1 Taylor 266 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  POM73344  Phacelia humilis var. humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC5263  Phacelia imbricata 1944-7-6 Lassen Eagle Lake. Harvey Valley. 1694 Comment
  CAS-BOT-BC145032  Phacelia inundata B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6559 Lassen U.S. Hwy 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield 1330 Comment
  CHSC26176  Phacelia linearis J. P. Kroessig 1977-5-23 36 Lassen Eagle Lake Biological Station ca 37 km nnw of Susanville. 1570 Comment
  CHSC5051  Phacelia linearis L. B. Barlow 1967-6-23 3 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC68751  Phacelia linearis Vernon H. Oswald; Lowell Ahart 1997-5-27 8526 Lassen Coyote Flat on Forest Route 38N04 4.9 mi northeast of Hwy.139. 1813 Comment
  NY998460  Phacelia linearis W. W. Eggleston 1911-5-29 6721 Lassen Vicinity of Doyle Station 1290 Comment
  SBBG64994  Phacelia linearis S. W. Hutchinson -Jun-1925 395 Lassen Eagle Lake 1554 Comment
  UC133088  Phacelia linearis T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UCD20363  Phacelia linearis Joe DiTomaso 2002-6-4 s.n. Lassen Lassen County, about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. Comment
  NY1056433  Phacelia lutea var. glandulifera A. Tiehm 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway 1387 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
  JEPS4041  Phacelia mutabilis Frances D. Payne 1929-7-12 85 Lassen ridge above Lost Lake; Warner Mountains 2438 Comment
  CAS-BOT-BC141448  Phacelia ramosissima var. eremophila John Thomas Howell 1934-6-10 11873 Lassen Janesville Comment
  NY1058138  Phacelia ramosissima var. eremophila N. H. Holmgren 1980-7-4 9508 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  SEINET7356303  Phacelia ramosissima var. eremophila Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9508 Lassen Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0 1890 Comment
  SEINET7926036  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 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
  UC24457  Phacelia ramosissima var. eremophila Milo S. Baker 1894-7-25 Lassen Eagle Lake 1524 Comment
  JEPS25530  Phacelia thermalis Rimo Bacigalupi with Lincoln Constance 1959-6-16 7144 Lassen Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside hwy) 1341 Comment
  UCR80230  Phacelia thermalis J. T. Howell 1934-6-16 12222 Lassen Bieber 1258 Comment
  SJSU5104  Phleum pratense H. L. Buckalew 1961-7-9 Lassen near lake shore, Blue Lake, Warner Mts 1828 Comment
  UCD89650  Phleum pratense L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  CAS-BOT-BC232853  Phlox A. M. Vollmer; L. Beane 1953-7-1 55 Lassen Along Halls Flat road, beginning 6 miles W of Susanville to McArthur 1554 Comment
  UC1124222  Phlox gracilis K. E. Bradshaw 1939-5-27 230 Lassen Black Mountain Experimental Forest, Plot 39-1, s end Lassen National Forest, Halls Flat Quad. 1752 Comment
  RSA469948  Phlox longifolia subsp. brevifolia Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS29740  Phlox speciosa subsp. occidentalis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8495 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  POM74317  Phlox speciosa subsp. occidentalis Marcus E. Jones 1897-6-26 10522 Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA551342  Phlox speciosa subsp. occidentalis J. T. Howell, Gordon H. True, Margaret Williams 1973-5-12 49155 Lassen In cemetary, Janesville 1296 Comment
  CHSC91334  Phlox stansburyi Lowell Ahart; John Dittes 2005-6-1 11846 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  CDA40284  Phlox stansburyi T. C. Fuller 1963-6-11 10662 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  UCD118467  Phlox stansburyi Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  CHSC68743  Phoenicaulis cheiranthoides Vernon H. Oswald; Lowell Ahart 1997-5-27 8490 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. At a pullout along the highway. 1627 Comment
  UC465863  Phoradendron densum Milo S. Baker 1900-7-6 Lassen s. side Dixey Mts. Comment
  UCD89832  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395. Southeast of Constantia. Comment
  CAS-BOT-BC60738  Physaria occidentalis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50655 Lassen Sierra Nevada. Summit ridge of Diamond Mountain. 2346 Comment
  HSC101734  Pinus albicaulis Michael Kauffmann, Jeffrey Kane 2013-7-23 15 Lassen North-facing caldera 2360 Comment
  HSC26251  Pinus jeffreyi W. A. Heaton 1965-5-8 32 Lassen Near Fredonyer Pass on Hwy. 36 W of Susanville, Bulk Collection 45 Comment
  CHSC4461  Pinus ponderosa C. Glascock 1965-2-7 224 Lassen 1.2.mi. w of Susanville Forest Ranger Station, Hwy. 36, ca. 20 ft. from road's edge. Comment
  CHSC27607  Plagiobothrys cognatus Nancy Heiken 1978-7-5 79 Lassen S of Eagle Lake at E shore of Mahogany Lake; meadow at lake margin. 2060 Comment
  JEPS28716  Plagiobothrys cognatus George W. Gillett 1957-7-29 954 Lassen Snag Lake Lassen Volcanic National Park (shoreline near e inlet) 1850 Comment
  SJSU5807  Plagiobothrys cognatus J. W. Tilden 1958-6-27 1293 Lassen Madeline Comment
  UC1609179  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5626 Lassen e of Poison Lake (n of Hwy 44 along Rd 33N47 at ne end of Little Harvey Valley, on small branch of Pine Creek, between Champs Flat and Harvey Valley); Little Harvey Valley, Pine Creek 1737 Comment
  UC526162  Plagiobothrys cognatus John Thomas Howell 1934-6-10 11890 Lassen 15 mi. n. Susanville (on rd. to Horse Lake) Comment
  JEPS127173  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-15 21212 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC224968  Plagiobothrys hispidulus J. Burtt Davy 1897-6-17 3360 Lassen Adobe Meadows, Honey Lake Valley Comment
  CAS-BOT-BC224974  Plagiobothrys hispidulus John Thomas Howell; Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, E slope of Diamond Range S of Susanville 2164 Comment
  CAS-BOT-BC224977  Plagiobothrys hispidulus Peter H. Raven; Otto T. Solbrig 1958-6-17 13286 Lassen Along US Highway 395, 1.8 miles S of Ravendale Comment
  CHSC112431  Plagiobothrys hispidulus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18776 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
  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-BC224969  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  CHSC106839  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy 44 ca 1 mi E of Shasta Co. line. Flat lodgepole forest S of hwy. 1645 Comment
  SD149177  Plagiobothrys hispidus John Thomas Howell, Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2160 Comment
  RSA517278  Plagiobothrys hispidus Barbara Ertter, Gary Schoolcraft 1987-6-16 7190 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  HSC31353  Plagiobothrys mollis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19273 Lassen Harvey Valley near Cone Springs Comment
  CHSC66721  Plagiobothrys mollis var. mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  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
  RSA0105581  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC7769  Plantago lanceolata Beverley J. Wise 1969-6-4 74 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  CHSC4752  Platanthera leucostachys R. Carter 1967-7-14 609 Lassen Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  SD7498  Platanthera sparsiflora Mrs. R. M. Austin 1880-1 Lassen No further locality information given on label on specimen sheet. Comment
  CHSC112449  Plectritis macrocera Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18747 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
  CHSC4905  Plectritis macrocera Bill Wilson 1967-6-23 17 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  CHSC7742  Plectritis macrocera Beverly J. Wise 1969-4-10 118 Lassen 2.8 mi. north of Susanville on Shasta Forest logging Rd #7-off Hwy 139. 1341 Comment
  SEINET780337  Plectritis macrocera B. J. Cox, D. B. Dunn 1971-6-2 3116 Lassen Six miles N of Halleujah jct. on U.S. Hwy. 395, in Artemesia tridentata. 1402 Comment
  CAS-BOT-BC227203  Poa bulbosa Barbara T. Keller 1974-5-7 1265 Lassen Along highway 395 about 5 miles west of Hurlong, 1/4 mile south of Honey Lake Comment
  UCD90921  Poa cusickii L. D. Whitney 1935-6-26 s.n. Lassen Near Fruit Grower's Supply Co., Camp 10. Comment
  UCR119183  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Warner Mountains, 6 miles southeast of Jess Valley, 3 miles east of Blue Lake. Southern edge of mountains. 2134 Comment
  CHSC112474  Poa cusickii subsp. cusickii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18780 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
  CHSC91295  Poa cusickii subsp. cusickii Lowell Ahart; John Dittes 2005-6-2 11927 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  JEPS107793  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes 2005-6-2 11927 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  JEPS107983  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes 2005-6-2 11927 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC1024840  Poa cusickii subsp. cusickii Leo Whitney 1935-6-10 3214 Lassen Camp 10 Fruit Grower's Supply Company Comment
  UC1024881  Poa cusickii subsp. cusickii Leo Whitney 1935-5-26 3141 Lassen 10 mi e Adin (Ash Creek) Comment
  JEPS118453  Poa cusickii subsp. epilis Lowell Ahart, John Dittes 2011-6-20 17507 Lassen Meadow about 40 yards east of the stream, about 100 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
  CAS-BOT-BC247321  Poa pratensis John Thomas Howell; Gordon H. True 1973-8-1 50183 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC247322  Poa pratensis David D. Keck 1944-7-8 5448 Lassen 2 mi. E. of Westwood, in wet sod of meadow leading down to Mountain Meadows Reservoir 1524 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
  JEPS126499  Poa secunda Jennifer Mueller, A. Brambila July 6-15, 2016 CA 370 -228 Lassen Head south through Eagleville, CA to Bare Ranch. Comment
  UCR266833  Poa secunda G. B. Stabler 1922-7-9 s.n. Lassen Constantia [former settlement, in Long Valley 45 miles (72 km) southeast of Susanville] 1372 Comment
  CHSC77270  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2350 Lassen About 1.5 miles NE of Red Rock Lake. 2042 Comment
  UC188907  Poa secunda subsp. juncifolia Milo S. Baker Lassen Dixie Valley Comment
  UCD32661  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2057 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  CAS-BOT-BC251088  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49189 Lassen Elysian Valley northwest of Janesville 1325 Comment
  SEINET7854865  Poa secunda subsp. juncifolia G. Schoolcraft 1995-5-22 2489 Lassen East of Skedaddle Ranch. 1554 Comment
  SEINET7855100  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen R.R. station, Constantia Comment
  CAS-BOT-BC236177  Poa secunda subsp. secunda Doris Kildale Gillespie 1930-5-14 9379 Lassen Fredonia Pass near Susanville Comment
  UC1132871  Poa secunda subsp. secunda A. Simontacchi 1940-5-28 784 Lassen 3.2 mi wsw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UCD92017  Poa secunda subsp. secunda A. H. Shunk 1923-8-20 s.n. Lassen Madeline. Comment
  UC1143038  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Nat'l Forest 1859 Comment
  UC773972  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experiment Range; Lassen Forest 1767 Comment
  CHSC7768  Polemonium micranthum Beverly J. Wise 1969-4-20 92 Lassen 13.2 mi. East of Susanville on Las. Co. Rd. 215. 1463 Comment
  SEINET8729406 Image available Polemonium micranthum Unknown 1986-1 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill, T36N, R16E, S35, 5600 ft. 1707 Comment
  UC1037308  Polemonium occidentale Leo Whitney 1934-7-24 1582 Lassen ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek, Lassen National Forest); Lassen National forest, near Bridge Ceek, sw Eagle Lake 1737 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
  RSA0065537  Polyctenium fremontii M. P. Harthill 1971-6-21 215 Lassen Susanville. Comment
  RSA340001  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west on Hwy 395 1610 Comment
  NY406791  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  HSC24811  Polygala subspinosa D. H. Norris, F. J. Hermann 1972-5-17 22633 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  UCR32584  Polygala subspinosa var. subspinosa T. L. Wendt, E. J. Lott 1975-6-12 1031 Lassen 4.5 mi east of Rte. 395 on Smoke Creek Ranch Rd, east of Mud Flat 1372 Comment
  NY404581  Polygonum amphibium var. emersum G. H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch, Honey Lake Valley Comment
  NY652201  Polygonum amphibium var. stipulaceum G. Schoolcraft 1996-9-12 2571 Lassen In Willow Creek north of Susanville 1493.5 Comment
  CAS-BOT-BC419767  Polygonum argyrocoleon John Thomas Howell 1976-7-20 52030 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC413910  Polygonum aviculare James Jokerst 1983-7-24 1877 Lassen Near Madeline Plains 1614 Comment
  JEPS83272  Polygonum aviculare J. D. Jokerst 1983-7-24 1877 Lassen nw Ravendale; Madeline Plains 1615 Comment
  UC1136177  Polygonum douglasii subsp. douglasii E. Sawyer 1935-6-27 215 Lassen Long Valley Sierraville Quadrangle Comment
  UC570303  Polygonum douglasii subsp. douglasii E. Sawyer 1935-6-27 215 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  UC773925  Polygonum douglasii subsp. douglasii L. R. Short and J. Warren July, 1936 S- 420 Lassen Burgess Spring Experiment Range 1856 Comment
  CHSC105243  Polygonum douglasii subsp. spergulariiforme Lowell Ahart; John Dittes 2010-7-31 16979 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
  JEPS46148  Polygonum douglasii subsp. spergulariiforme Duncan Dunning 1921-8-11 Lassen 3 mi s Antelope Mountain (sw of Eagle Lake); Martin Spring Comment
  UC1178952  Polygonum douglasii subsp. spergulariiforme Herbert L. Mason Jul 29 1955-Jul 31 1955 14645 Lassen near Westwood Junction ((railroad station 15 mi w of Susanville), s Lassen Co.) Comment
  RSA122844  Polygonum kelloggii L. R. Short, Wm. Gansberg 1936-6-8 s 390 Lassen Burgess Spring, Exp Range. 1744 Comment
  SEINET11933855  Polygonum kelloggii N. H. Holmgren, Holmgren, P. K. 1980-1 9466 Lassen Madeline Plains, along US Hwy 395, 5.6 km S of Madeline, T36N, R13E, S9 1620 Comment
  JEPS50618  Polygonum persicaria W. L. Jepson 1939-8-11 19377 Lassen Milford 1280 Comment
  CHSC113013  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2013-7-23 18905 Lassen On the northwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121265  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2013-7-23 18905 Lassen On the NW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS87370  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-8-3 5748 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  RSA0045637  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area,, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  RSA339992  Polygonum polygaloides subsp. confertiflorum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9466 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UC1609434  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald and Lowell Ahart 1993-8-3 5749 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor, e side of swamp); Cooper Swamp 1932 Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  UC1136922  Polygonum sawatchense subsp. sawatchense George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 Comment
  CHSC113811  Porterella carnosula Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18727 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
  CHSC60343  Porterella carnosula Mary Ann Showers 1992-6-13 2550 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  JEPS5602  Porterella carnosula G. S. Crew and C. S. Robinson 71 Lassen Feather Lake Lassen National Forest, Feather Lake (sw Lassen Co.) 1737 Comment
  HSC63956  Porterella carnosula Teresa Prendusi 1980-7-1 Lassen Champs Flat, ca. 8 mi. W of N end of Eagle Lake. 1677 Comment
  SEINET10460825  Porterella carnosula Secrest 1951-6-23 SECREST s.n. Lassen Comment
  SEINET10460828  Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 Holmgren 9463 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi.) south of Madeline. T36N R13ES9 1620 Comment
  SEINET5334401  Portulaca oleracea Unknown 1942-8-31 s.n. Lassen Honey Lake Valley. 1067 Comment
  CHSC4837  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CAS-BOT-BC452094  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  UCD138278  Potamogeton illinoensis G. Schoolcraft 1996-9-11 2562 Lassen Willow Creek below petroglyphs and above dam. 1432 Comment
  CAS-BOT-BC454091  Potamogeton pusillus subsp. tenuissimus Verne Grant; Irving Schneider 1947-7-31 8212 Lassen Northeast quarter of George Williams section 19, Madeline Plain Comment
  UC1100047  Potamogeton pusillus var. pusillus Malcolm A. Nobs, S. Galen Smith 1949-7-20 1045 Lassen Bieber, along Highway 299 Bieber Comment
  UC334643  Potamogeton striatus J. G. Lemmon Lassen Hot Spring near Honey Lake Comment
  JEPS100240  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  UC1191488  Potentilla biennis Verne Grant, Irving Schneider 1947-7-30 8189 Lassen s point of w embayment Tule Lake Comment
  CAS-BOT-BC143111  Potentilla breweri M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  JEPS44188  Potentilla fruticosa Brown and Wieslander 1922-7-25 4 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  RSA123323  Potentilla glandulosa L. R. Short 1936-6-10 s- 425 Lassen [Unspecified] 1854 Comment
  CHSC13850  Potentilla gracilis var. fastigiata F. T. Griggs 1973-7-7 106 Lassen Lassen county Cone Spring. Comment
  HSC81543  Potentilla gracilis var. flabelliformis Thomas W. Nelson, Jane P. Nelson 1980-7-6 6042 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC1128271  Potentilla millefolia A. Simontacchi 1940-5-17 743 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CAS-BOT-BC144842  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CHSC117197  Poterium sanguisorba Lowell Ahart; John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC27652  Prunella vulgaris var. lanceolata Jerry Snodgrass 1978-7-11 55 Lassen Papoose Creek, SE corner of Eagle Lake. 1572 Comment
  CHSC5273  Prunella vulgaris var. lanceolata M. West 1946-7-7 Lassen Eagle Lake. Butte Creek. Comment
  CAS-BOT-BC159780  Prunus andersonii M. S. Taylor 1982-5-7 4424 Lassen Reno Junction and along old road paralleling Hwy 70 just e of Beckwourth Pass 1524 Comment
  HSC101096  Prunus andersonii C. Dow, D. Garrison 2008-5-3 Lassen OHV Trailhead and Trail to Indian Springs 1439 Comment
  RSA123188  Prunus andersonii E. Sawyer 1935-6-27 10893 Lassen Long Valley. 1311 Comment
  SJSU14477  Prunus andersonii W. D. Pitts 1990-5-29 297 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  RSA0028244  Prunus andersonii John F. Emmel 1994-7-18 1335 Lassen Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle. 1305 Comment
  JEPS44919  Prunus virginiana var. demissa W. L. Jepson 1918-8-3 7800 Lassen Honey Lake Valley 1219 Comment
  RSA123193  Prunus virginiana var. demissa L. R. Short, Wm Gansberg 1936-7-3 S- 466 Lassen MDM. Burgess Spr. Exp. Range. 1848 Comment
  UC1128444  Prunus virginiana var. demissa G. T. Nordstrom 1936-7-8 902 Lassen 2 mi se of Dog Valley (Tahoe National Forest); Tahoe National Forest 1798 Comment
  CHSC11770  Pseudostellaria jamesiana Wayne O. Baum 1971-7-6 71 -6 Lassen E. slope of Gallatin Peak. 1950 Comment
  JEPS94550  Pseudostellaria jamesiana Vernon Oswald and Lowell Ahart 1997-6-24 8619 Lassen 2.7 mi e of boundary of Lassen National Forest (7.4 mi e of God Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment of the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  CAS-BOT-BC80092  Pseudotsuga menziesii John Thomas Howell 1976-7-19 51965 Lassen on Gold Run Creek southwest of Susanville 1386 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
  CHSC30610  Psilocarphus brevissimus var. brevissimus L. Maslin 1975-7-1 5 Lassen Lower Dry Lake. 1828 Comment
  POM40287  Psilocarphus elatior Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  POM27927  Psoralidium lanceolatum Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CAS-BOT-BC460510  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile E of Westwood 1524 Comment
  UCD91531  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area. 1981 Comment
  RSA0036998  Puccinellia lemmonii Lowell A. Ahart, John Dittes 2008-6-20 14967 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
  UCD93431  Puccinellia nuttalliana P. B. Kennedy 1923-6-1 s.n. Lassen edge of Honey Lake. Comment
  CHSC5019  Purshia tridentata L. G. Bennett 1967-7-1 81 Lassen 4 miles from Eagle Lake Biological Station on road to Gallatin Beach. 1676 Comment
  CHSC7722  Purshia tridentata Beverley J. Wise 1969-5-4 94 Lassen 3.0 mi west on Shaeffer Mtn Lookout rd off Hwy 395, 27.4 mi. east of Susanville. 2042 Comment
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  SJSU14476  Purshia tridentata W. D. Pitts 1990-5-24 300 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  SEINET10542465  Purshia tridentata Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2592 Lassen Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville. Assoc.; Purshia-artemesia 1311 Comment
  CAS-BOT-BC147823  Purshia tridentata var. tridentata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49161 Lassen Elysian Valley northwest of Janesville 1325 Comment
  RSA122151  Purshia tridentata var. tridentata K. e. Bradshaw 1939-5-27 234 Lassen S end of Black Mtn E.F. Plot 39-1. Lassen Forest. 1753 Comment
  SBBG12225  Purshia tridentata var. tridentata A. I. Richardson 1961-5-30 7 Lassen S of Eagle Lake 1402 Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. Comment
  POM90536  Purshia tridentata var. tridentata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC462881  Pyrola asarifolia George W. Gillett 1957-7-24 900 Lassen Lassen Volcanic National Park: Cameron Meadow 1950 Comment
  CHSC59803  Pyrola dentata Mary Meyer 1980-7-31 Lassen Forest adjacent to road. 1828 Comment
  RSA0084312  Pyrola dentata Diana D. Jolles, Erik M. Beaston 2011-7-5 441 Lassen Lassen National Forest near area where Susan River flows through Clover Valley. Thinning unit near intersection of A-21 road and Silver Lake Road some miles south of Highway 44. 1784 Comment
  POM39973  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC35837  Pyrrocoma carthamoides var. cusickii M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  UCD135326  Pyrrocoma hirta Ratliff 1966-7-5 4 Lassen Harvey Valley Allot. - Plot 71. Comment
  UC773928  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1783 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
  CHSC76089  Pyrrocoma lanceolata var. lanceolata Lowell Ahart; Vernon H. Oswald 1999-9-13 8231 Lassen In the field on the north side of the dirt road, Willow Creek is on the south side of the road, about 250 yards east of the sign in station along Highway 139, Willow Creek Wildlife Area. 1463 Comment
  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
  UC1583970  Pyrrocoma racemosa var. paniculata G. Schoolcraft 1990-9-13 2129 Lassen upper end of Stoney creek Stoney Creek 1463 Comment
  CAS-BOT-BC105245  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles W of Susanville 1371 Comment
  JEPS107803  Quercus kelloggii Lowell Ahart, John Dittes 2005-6-2 11942 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  RSA518917  Quercus kelloggii George K. Helmkamp 1990-10-4 M- 8 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  CAS-BOT-BC379462  Ranunculus alismifolius Lassen G. S. Crew 1927-5-25 3 Lassen Lassen Forest, Norval Flat 1747 Comment
  UC1126215  Ranunculus alismifolius var. alismifolius A. Simontacchi 1940-5-13 705 Lassen 6.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  UC773871  Ranunculus alismifolius var. alismifolius L. R. Short 1936-4-28 S- 339 Lassen Harvey Valley Lassen <National> Forest 1706 Comment
  CHSC60765  Ranunculus alismifolius var. davisii Vernon H. Oswald; Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  CHSC6244  Ranunculus alismifolius var. hartwegii R. Gein 1946-6-11 Lassen Eagle Lake. 1580 Comment
  JEPS107311  Ranunculus aquatilis var. aquatilis Lowell Ahart, John Dittes 2005-6-1 11904 Lassen Bottom of a depression, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC1594639  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1992-7-16 5121 Lassen w Cinder Pit (on logging road paralleling e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, btween Old Station and Susanville); Bridge Creek 1719 Comment
  RSA125295  Ranunculus aquatilis var. capillaceus Peter H. Raven 1958-6-19 13256 Lassen A pond along hwy 395, 7.1 miles W of Standish. Comment
  CHSC58853  Ranunculus aquatilis var. diffusus Vernon H. Oswald; Lowell Ahart 1992-7-16 5121 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. In pools in a meadow. 1719 Comment
  NY493017  Ranunculus aquatilis var. diffusus B. M. Bartholomew 1988-7-22 4504 Lassen Mosquito Creek ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  CAS-BOT-BC379023  Ranunculus aquatilis var. diffusus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16347 Lassen about 10 mi E of Susanville Comment
  CHSC6246  Ranunculus canus W. Vinyard 1946-6-13 Lassen Pine Creek, Eagle Lake. 60 Comment
  JEPS55056  Ranunculus cymbalaria var. saximontanus W. L. Jepson 1918-8-2 7768 Lassen Beckwith Pass; below spring 1463 Comment
  JEPS28454  Ranunculus flammula George W. Gillett 1957-7-22 872 Lassen Snag Lake Lassen Volcanic National Park (s shore) 1850 Comment
  HSC103655  Ranunculus flammula Thomas W. Nelson, Jane Nelson 1985-8-10 8026 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  CHSC60391  Ranunculus flammula var. ovalis Mary Ann Showers 1992-6-13 2549 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC67295  Ranunculus glaberrimus James D. Jokerst 1991-5-29 3313 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  RSA715670  Ranunculus occidentalis L. Ahart, John Dittes 2005-6-1 11857 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC118171  Ranunculus occidentalis T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC118184  Ranunculus occidentalis T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  UC1924564  Ranunculus occidentalis Debra Valov 2006-5-30 2006036 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  JEPS118446  Ranunculus occidentalis var. occidentalis Lowell Ahart, John Dittes 2011-6-20 17479 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  NY494769  Ranunculus occidentalis var. ultramontanus W. W. Eggleston 1911-5-29 6759 Lassen Vicinity of Doyle Station 1290 Comment
  POM204150  Ranunculus occidentalis var. ultramontanus J. T. Howell 1934-6-10 11878 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  UC1587083  Ranunculus sceleratus G. Schoolcraft 1991-6-27 2174 Lassen 3 mi e Susanville (n of Johnstonville Rd, along ditch) 1280 Comment
  CHSC71097  Ranunculus testiculatus Vernon H. Oswald; Lowell Ahart 1998-5-22 9101 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  CDA3492  Ranunculus testiculatus T. C. Fuller 1969-5-22 18480 Lassen County fairgrounds, Susanville. 0 Comment
  CHSC52793  Ranunculus uncinatus Cindy Prouty 1978-7-5 1 Lassen E shore of Mahogany L., S of Eagle L. Found in meadow. 2060 Comment
  JEPS94541  Ranunculus uncinatus Vernon Oswald and Lowell Ahart 1997-6-24 8613 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville on n side of Diamond Mountain, along Forest Road 29N43, 5.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1889 Comment
  CAS-BOT-BC58195  Rhododendron columbianum Ben Howard; C. R. Quick 1949-9-14 49 -48 Lassen Jennie Spring, Jennie Mt., N. of Westwood, Lassen National Forest. Comment
  SBBG2740  Ribes aureum H. and M. Dearing 1939-6-6 3563 Lassen Pitt River, Bieber Comment
  CHSC99274  Ribes aureum var. aureum Lowell Ahart; John Dittes 2008-6-20 14950 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  NY455007  Ribes cereum B. M. Bartholomew 1988-7-22 4503 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC14567  Ribes cereum Milo S. Baker 1894-6 Lassen s side Dixey Mts. Comment
  UC773884  Ribes cereum L. R. Short and Wm. Gansberg 1936-6-16 S- 439 Lassen Burgess Spring Experiment Range Lassen Forest 1880 Comment
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CAS-BOT-BC212656  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile E of Fredonyer Pass Comment
  NY455349  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 miles east of Fredonyer Pass 1706.9 Comment
  SEINET5339729  Ribes nevadense C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  CAS-BOT-BC186150  Ribes roezlii var. roezlii Alice Eastwood 1912-8-22 1874 Lassen Morgans [Morgan] Springs, Lassen Butte Region Comment
  CHSC106588  Ribes velutinum C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  RSA0023962  Ribes velutinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  HSC82187  Rigiopappus leptocladus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6036 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC1567416  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen lower ne slope Shaffer Mtn. 1432 Comment
  CAS-BOT-BC363013  Rigiopappus leptocladus Milo S. Baker 1894-7-1 s.n. Lassen S. side Dixey [Dixie] Mts. Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  JEPS119648  Rorippa curvisiliqua Lowell Ahart, John Dittes 2012-7-9 18292 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCR163272  Rorippa curvisiliqua Jim Andre 1993-6-29 1411 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  CHSC75479  Rorippa curvisiliqua var. curvisiliqua Vernon H. Oswald; Lowell Ahart 1999-6-9 9758 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. On a meadow adjacent to the highway. 1645 Comment
  CHSC113059  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2013-7-22 18855 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC25060  Rorippa nasturtium-aquaticum L. B. Barlow 1967-6-24 40 Lassen Meadow 4 mi. east of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 Comment
  POM312442  Rorippa sinuata Verne Grant, Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  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
  UCD115377  Rorippa sinuata Verne Grant; Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting aera on west end of Section 19 on Madeline Plain. Comment
  UC1128595  Rosa bridgesii A. Simontacchi 1940-6-24 722 Lassen 6.4 miles S. W. of Jacks Lake Halls Flat Quad. 1950 Comment
  CHSC93661  Rosa californica Lowell Ahart; John Dittes 2005-6-2 11944 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, about 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  CHSC12477  Rosa woodsii subsp. ultramontana Carol Weld 1969-6-26 42 Lassen Springs near roadside, 7.8 miles S.W. of Eagle Lake Field Station. 1584 Comment
  CHSC4976  Rosa woodsii subsp. ultramontana D. L. Stites 1967-6-25 58 Lassen 2 mi w of Eagle Lake Biology Station at Pelical Point. 1524 Comment
  CAS-BOT-BC148391  Rubus leucodermis John Thomas Howell; Gordon H. True 1973-8-1 50248 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1950 Comment
  CAS-BOT-BC433485  Rumex fueginus John Thomas Howell 1934-7-8 12485 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC433634  Rumex lacustris James Jokerst 1983-7-25 1891 Lassen Near Madeline Plains. 1614 Comment
  SD64325  Rumex lacustris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on hwy #395 1676 Comment
  CHSC101061  Rumex paucifolius John Dittes 2008-5-22 1530 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 700 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace of Willow Creek. 482 Comment
  UC1037331  Rumex paucifolius Leo Whitney 1934-7-3 1954 Lassen 14 mi w Eagle Lake (Bogard Ranger Station); Lassen National Forest 1737 Comment
  UC1542940  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA Ash Valley 1554 Comment
  JEPS120880  Rumex salicifolius Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18774 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCR163274  Rumex salicifolius Jim Andre 1993-6-29 1409 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  JEPS39934  Rumex salicifolius var. lacustris W. L. Jepson 1918-8-15 7997 Lassen Grasshopper Valley 1615 Comment
  UC1101216  Rumex salicifolius var. lacustris Verne Grant and Irving Schneider 1947-7-30 8188 Lassen s point of w embayment Tule Lake Comment
  UC1101217  Rumex salicifolius var. lacustris Verne Grant and Irving Schneider 1947-7-29 8183 Lassen e side Tule Lake Comment
  UC1520656  Rumex salicifolius var. lacustris Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9475 Lassen 0.7 mi w (1.1 km w) U. S. Hwy 395 (a valley road, from a turnoff 6.4 mi (10.3 km) s of Madeline); Madeline Plains 1615 Comment
  UC6951 Image available Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CHSC5006  Sagittaria cuneata L. G. Bennett 1968-7-8 124 Lassen Murrers Meadow, north end, near Eagle Lake. 1493 Comment
  CAS-BOT-BC445675  Sagittaria cuneata B. Trowbridge 1977-7-11 5985 Lassen In Willow Creek, vicinity of Rice Canyon, northeast of Susanville 1706 Comment
  CHSC58514  Salix boothii Vernon H. Oswald 1992-7-3 5048 Lassen Trail from Juniper L. to Snag L., on the W edge of Cameron Meadow. 1950 Comment
  RSA0035819  Salix exigua Lowell A. Ahart, John Dittes 2008-6-22 15043 Lassen 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
  JEPS107968  Salix jepsonii Lowell Ahart, John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  NY430479  Salix laevigata G. Schoolcraft 1994-8-2 2413 Lassen About 1.5 miles southwest of Boot Lake 2011.7 Comment
  CAS-BOT-BC128221  Salix lasiandra subsp. caudata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  CAS-BOT-BC106964  Salix lasiolepis G. Schoolcraft 1999-5-7 2820 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  NY430478  Salix lasiolepis G. Schoolcraft 1998-5-22 2719 Lassen Susan River east end of Susanville 1268.0 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
  JEPS88210  Sanguisorba annua Vernon H. Oswald and Lowell Ahart 1996-6-17 7787 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at the Hwy 36 bridge spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  UC1924239  Sanguisorba annua Debra Valov 2004-6-8 2004245 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  JEPS103224  Sanicula graveolens G. Schoolcraft 1992-5-1 2235 Lassen W. of Susan Hills Subd. SW. of Susanville 1341 Comment
  CDA19211  Sarcobatus vermiculatus D. Kratville 2001-6-21 s.n. Lassen Modoc Plateau; Outside of Susanville. 0 Comment
  HSC4526  Sarcobatus vermiculatus Fred J. Kindel 1955-7-14 Lassen Wendel, Hot Springs Comment
  NY540264  Sarcobatus vermiculatus E. K. Balls 1952-10-10 18136 Lassen 5.2 miles west of Standish, Highway 395, Susanville to Alturas 1249.7 Comment
  UCR67389  Sarcobatus vermiculatus George K. Helmkamp 1990-9-23 D- 5 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CHSC4601  Sarcodes sanguinea R. Ogren 1967-7-8 1 Lassen Papoose Valley, 2 mi S of Gallatin Beach, Eagle Lake. 1524 Comment
  CAS-BOT-BC466321  Sarcodes sanguinea John Thomas Howell 1973-7-10 49786 Lassen Sierra Nevada, Fredonyer Pass 1737 Comment
  CAS-BOT-BC383111  Schoenoplectus acutus var. occidentalis Andrew Townesmith; Karen M. Meyer 2007-7-22 842 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  CAS-BOT-BC111215  Scirpus John Thomas Howell 1976-7-19 51967 Lassen Transition forest on Gold Run Creek southwest of Susanville 1386 Comment
  UC1100757  Scirpus acutus var. occidentalis Verne Grant and Irving Schneider 1947-9-6 8389 Lassen irrigation ditch w Fleming Ranch headquarters (near Wendel); , w of Fleming Ranch headquarters Comment
  UC766119  Scirpus nevadensis R. F. Hoover 1940-10-10 4679 Lassen Litchfield Comment
  CAS-BOT-BC240001  Scribneria bolanderi Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 759 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  CAS-BOT-BC240002  Scribneria bolanderi Alice Eastwood; John Thomas Howell 1940-6-11 7974 Lassen Big Valley Mts. Comment
  JEPS11413  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  SEINET10744751  Scrophularia lanceolata Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 837 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  SEINET8020059  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  RSA450332  Scutellaria holmgreniorum Gary Schoolcraft 1986-6-25 1641 Lassen S. of Observation Peak about 1.5 mi. east of Post Camp. 1677 Comment
  RSA0003996  Scutellaria holmgreniorum Noel Holmgren, Pat Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km. from U.S. Hwy. 395 via Rye Patch Can. Comment
  CAS-BOT-BC214264  Scutellaria nana M. S. Baker; Frank Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  CAS-BOT-BC214267  Scutellaria nana Peter H. Raven; Otto T. Solbrig 1958-6-17 13270 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  UC1137689  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest, Lassen Forest and Range Experiment Station Lassen National Forest; , Lassen Forest and Range Experiment S 1722 Comment
  UC25818  Scutellaria nana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SEINET13947834 Image available Scutellaria nana Noel H. Holmgren, Patricia K. Holmgren 1980-1 9524 Lassen Upper Smoke Creek drainage, 21.9 km from US Hwy 395 via Rye Patch Canyon, 24 km airline distance SE of Ravendale; 1580 m alt., T33N, R16E, SEC36 1580 Comment
  CAS-BOT-BC240085  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak Comment
  RSA647520  Secale cereale Marion P. Harthill 1972-6-16 788 Lassen Doyle 1372 Comment
  CAS-BOT-BC46021  Sedum lanceolatum John Thomas Howell; Gordon True; Wayne Dakan 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2346 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
  UC1136809  Senecio aronicoides L. R. Short and Wm. Gansberg 1936-6-2 S- 355 Lassen Burgess Spr. Exp. Range Lassen Forest 1865 Comment
  UC1143033  Senecio aronicoides L. R. Short 1936-6-2 S- 355 Lassen Burgess Spring Experimental Range Lassen National Forest 1865 Comment
  CHSC108003  Senecio hydrophiloides Lowell Ahart; John Dittes 2011-6-20 17503 Lassen About 10 yards west of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC54176  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. Meadow. 1267 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
  HSC63728  Senecio integerrimus Teresa Prendusi 1980-4-30 Lassen NE of Snowstorm Ranch near Kalo Rd., Ravendale; near railroad tracks 1585 Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  SEINET10799215  Senecio integerrimus Jeffrey Huber 1971-6-2 Huber 129 Lassen Approx. 30 mi. N of Susanville, on Calif. Hwy. 139, in basalt; Pinus-Artemisia-Juniper Assoc. 1646 Comment
  SEINET10799218  Senecio integerrimus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17788 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CDA8673  Senecio pseudaureus var. pseudaureus Gordon Leppig 1998-7-12 948 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  JEPS79212  Senecio serra var. serra L. R. Heckard with R. C. Bacigalupi 1980-6-12 5253 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  CAS-BOT-BC364254  Senecio triangularis Clare B. Hardham 1971-8-22 18409 Lassen Diamond Mountain. Aspen Swamp, North slope Comment
  RSA518886  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  UC1143016  Sidalcea glaucescens August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn; Lassen National Forest, nw of Black's Mtn 1706 Comment
  CAS-BOT-BC205780  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  UCD18967  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). 1950 Comment
  SEINET11986397  Sidalcea oregana N. E. Heiken 1978-1 86 Lassen Colman Lake, several mi S of Eagle Lake 1963 Comment
  UCD116829  Sidalcea oregana P. B. Kennedy 1927-6-13 s.n. Lassen Fall River, by intake above dtich. Comment
  POM260877  Sidalcea oregana subsp. oregana Alice Eastwood, J. T. Howell 1940-6-11 7982 Lassen Big Valley Mountains. Comment
  RSA25322  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  POM253297  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 1 mile East of Westwood. 1524 Comment
  RSA703717  Sidalcea oregana var. maxima Arnold Tiehm, Jan Nachlinger, Margaret J. Williams 1988-6-2 11704 Lassen East side of Snowstorm Mt., 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas 1402 Comment
  NY177476  Sidalcea oregana var. spicata J. T. Howell 1934-7-6 12442 Lassen Harvey Valley Comment
  SEINET9005527  Sidalcea oregana var. spicata C. G. Gulling 1905-1 s.n. Lassen Big Meadows. 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
  UC1483814  Silene bernardina G. Schoolcraft 1979-6-7 129 Lassen northern Skidaddle Mountains 2011 Comment
  CHSC59709  Silene menziesii Mary Meyer 1980-7-28 Lassen 2148 Comment
  SEINET8879824  Silene menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc NF, along Blue Lake Road N of Blue Lake, above Parsnip Creek, ca 15 miles ESE of Likely. 1860 Comment
  CAS-BOT-BC389545  Silene nuda M. S. Taylor; B. Hammond 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass 1432 Comment
  CAS-BOT-BC389554  Silene nuda Elmer I. Applegate 1923-9-30 4035 Lassen Constantia, Honey Lake Valley Comment
  CHSC89312  Silene nuda G. Douglas Barbe 1974-8-20 1936 Lassen Upper Long Valley. Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 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
  UC1553400  Silene nuda G. Schoolcraft 1988-7-7 1818 Lassen ca 1 mi s Horne Ranch (se corners of Madeline Plains); , s of Horne Ranch 1645 Comment
  RSA0028051  Sisymbrium altissimum John F. Emmel 1996-7-14 1425 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  SBBG128753  Sisyrinchium bellum L. Ahart, J. Dittes 2008-6-20 14964 Lassen ca. 10 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  UC773859  Sisyrinchium idahoense L. R. Short, Wm. Gansberg 1936-6-11 S 430 Lassen Burgess Spring Esperiment Range; Lassen Forest 1730 Comment
  CDA38565  Sium F. A. Taylor 1939-7-5 s.n. Lassen Bieber. 0 Comment
  CDA38568  Sium suave T. C. Fuller 1959-7-7 4732 Lassen Highway 395, 7.5 miles east of Susanville. 0 Comment
  JEPS62138  Smilacina stellata W. L. Jepson 1918-8-2 7783 Lassen lower bench of creek 1 mi below Boni Ranch house; Long Valley, Long Valley Creek 1371 Comment
  NY820340  Solanum triflorum J. T. Howell 1973-7-10 49797 Lassen Susanville, in city park 1295 Comment
  CDA8717  Solidago californica Gary Schoolcraft 1994-8-29 2426 Lassen About 1 mile west of Susanville up Piute Creek. Comment
  UCD107501  Solidago spectabilis Tim Kuhn 2006-1 47 Lassen Eagle Lake Ranger District. Comment
  UC1776708  Solidago velutina subsp. sparsiflora G. Schoolcraft 1994-8-3 2416 Lassen About 1 mile S of Boot Lake 1889 Comment
  SEINET7707308  Sorbus californica G. Schoolcraft 1997-1 2672 Lassen Diamond Mountain, N slope 2317 Comment
  HSC95263  Sparganium emersum Gordon Leppig, J. Cromwell 1997-7-27 626 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95310  Sparganium emersum Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 691 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC27654  Sparganium emersum subsp. emersum Jerry Snodgrass 1978-7-11 50 b Lassen Papoose Creek, SE corner of Eagle L. Meadow; in pool. 1584 Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CAS-BOT-BC213213  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Standish Comment
  JEPS103181  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  POM91114  Spiraea douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC845562  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen meadow about 1 mi e Westwood 1524 Comment
  CHSC41843  Stachys ajugoides var. rigida P. V. Caldwell 1972-7-8 262 Lassen Eagle Lake. 1 mile from the forest road toward Papoose Meadows on Papoose Creek. Comment
  SEINET7977004  Stachys rigida C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1567417  Stanleya pinnata G. Schoolcraft 1989-5-31 1880 Lassen near intersection Skedaddle Ranch and Wendel Roads; nr intersection Skedaddle Ranch and Wendel Roads 1249 Comment
  CAS-BOT-BC60993  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen Near Karlo, about 12 miles north of Litchfield. 1356 Comment
  NY608067  Stanleya viridiflora G. Schoolcraft 1998-7-14 2763 Lassen Along Karlo Road, 1 mile south of Biscas Reservoir Road. 1356.4 Comment
  SEINET11604939  Stanleya viridiflora L. Bass 1982-7-25 10 -82 Lassen Near Karlo, ca 12 miles N of Litchfield. 1356 Comment
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  JEPS51139  Stellaria longipes var. longipes Brown and Wieslander 1922-7-18 52 Lassen Martin Springs; Eagle Lake Comment
  UC86569  Stenotus acaulis T. S. Brandegee 1892-7-2 Lassen Near Susanville Comment
  UC1755281 Image available Stenotus lanuginosus var. lanuginosus Dean W. Taylor 2007-6-14 20127 Lassen Upper Gooch Valley, Forest Road 35N05 (County Road 22) 0.3 miles north of junction with Forest Road 34N45 1889 Comment
  CAS-BOT-BC375066  Stephanomeria Gordon H. True 1973-8-22 7657 Lassen North shore of Honey Lake ca. 5 miles east of Janesville & just west of Hartson Reservoir 1219 Comment
  CAS-BOT-BC375447  Stephanomeria exigua subsp. exigua R. F. Thorne; C. W. Tilforth 1969-9-6 39261 Lassen On roadside c. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake) 1280 Comment
  UC1523770  Stephanomeria lactucina Gary Schoolcraft 1981-7-7 496 Lassen on slopes n Landon Lookout 2011 Comment
  HSC83372  Stephanomeria lactucina R. W. Becking 1987-7-29 Lassen Lassen National Forest, Caribou Wilderness, Gem Lake Comment
  CDA8868  Stephanomeria spinosa E. E. Fix 1946-7-21 Lassen Susanville. 0 Comment
  SEINET10474966  Stephanomeria spinosa Mary Susan Taylor 1982-8-19 Taylor 5020 Lassen T22N R17E sw/nw sec 5. Beckwourth Pass quad. Along dirt rd (old RR tracks), s of and paralleling Hwy 70, just se of Beckwourth Pass. Sagebrush Scrub; 5200 ft. Dry sandy soil. 1585 Comment
  CAS-BOT-BC375742  Stephanomeria virgata Gary Schoolcraft 1985-9-4 1520 Lassen Along Hwy 395 above Pauline's Risser, Tule Patch Spr. 1524 Comment
  UCR244065  Stipa comata Jim Andre, G. L. Clifton 1993-6-9 19691 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  HSC26013  Stipa hymenoides D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19297 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  SEINET10523055  Stipa thurberiana Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2873 Lassen Hallelujah Jct. intersection of US Hwy 395 & Calif. Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  CHSC80622  Streptanthella longirostris Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolscraft 2001-6-2 10039 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  NY215290  Streptanthus cordatus D. B. Dunn 1971-6-2 17787 Lassen 6 mi N of Hallelujah Jct. on U.S. Hwy 395. 1402.1 Comment
  SEINET10973548  Streptanthus cordatus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17787 Lassen 6 mi. N. Of hallelujah jct on us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  HSC23510  Stuckenia pectinata R. Carter 1967-7-13 594 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  UCD138352  Stuckenia pectinata Verne Grant; Irving Schneider 1947-8-1 8244 Lassen East end of Tule Lake. Comment
  UC7240  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3325 Lassen Honey Lake Valley 1828 Comment
  CHSC60831  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-28 5605 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  CHSC68748  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8488 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  JEPS94613  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8488 Lassen e side of Hwy 139 at a small farm stock pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  UC1123453  Swertia albicaulis var. albicaulis Robert W. Gardner 1937-6-16 G- 13 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  UC773939  Symphoricarpos rotundifolius var. rotundifolius L. R. Short and Wm. Gansberg 1936-7-3 S- 468 Lassen Burgess Spring Experimental Range; Lassen National Forest 1847 Comment
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC223697  Symphyotrichum ascendens Elmer I. Applegate 1923-9-30 4036 Lassen Constantia, Honey Lake Valley Comment
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Feb 4 2016
  OBI75865  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen Natl Forest. Caribou Wilderness; N of Long Lake. Red Cinder quad. T30 N R7E sec 9NE of SW 2099 Comment
  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
  UCD54543  Symphyotrichum frondosum Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2726 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1246 Comment
  UCD136611  Symphyotrichum lanceolatum var. hesperium G. Schoolcraft 1996-9-9 2583 Lassen lower end of Willow Creek. 1310 Comment
  CAS-BOT-BC98540  Symphyotrichum spathulatum Louella Bass 1973-6-6 99 Lassen Sierra Nevada - Elysian Valley 1325 Comment
  CHSC113936  Symphyotrichum spathulatum Lowell Ahart 2014-8-20 19720 Lassen All over the meadow, 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. 1894 Comment
  CHSC92950  Symphyotrichum spathulatum var. spathulatum L. P. Janeway 2005-7-31 8513 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  JEPS107459  Taraxia tanacetifolia Lowell Ahart, John Dittes 2005-6-1 11856 Lassen In the center 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
  JEPS114747  Taraxia tanacetifolia Lowell Ahart, John Dittes 2008-6-22 15037 Lassen About 220 yards west of the road levee, on the banks of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  JEPS31727  Taraxia tanacetifolia W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment
  UC1035972  Taraxia tanacetifolia Helen K. Sharsmith 1955-6-27 4511 B Lassen forest adjacent to State Hwy 299 near Fall River Mills; Lassen National Forest 1219 Comment
  UC1594647  Taraxia tanacetifolia Vernon H. Oswald and Lowell Ahart 1992-7-16 5102 Lassen s side of Hwy 44 between Old Station and Susanville (1.2 mi se of County Rd A21); Long Lake 1745 Comment
  SJSU4286  Taraxia tanacetifolia R. L. Fisher 1958-6-16 Lassen c. 6 mi S of Madeline Comment
  SJSU3023  Tetradymia canescens J. W. Tilden 1967-8-27 1773 Lassen 3 mi W of Standish Comment
  UC501445  Tetradymia canescens Frank W. Peirson 1932-7-20 10354 Lassen 20 mi se Susanville Comment
  CDA20359  Tetradymia glabrata D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC110308  Tetradymia glabrata L. P. Janeway; B. Castro 2012-7-2 10928 Lassen Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road. 1473 Comment
  UC91602  Tetradymia glabrata T. S. Brandegee 1892-7-22 Lassen Honey Lake Comment
  UCD136752  Tetradymia glabrata B. L. Kay 1955-4-19 s.n. Lassen 15 miles north of Honey Lake, along US Highway 395. Comment
  CDA8932  Tetradymia spinosa Robin Breckenridge 2007-5-1 PDR# 1349824 D Lassen Wendel. 0 Comment
  CAS-BOT-BC399902  Thalictrum sparsiflorum George W. Gillett 1957-7-24 897 Lassen Lassen Volcanic National Park. Cameron Meadow 1950 Comment
  JEPS54071  Thelypodium crispum W. L. Jepson 1918-8-2 7756 Lassen Beckwith Pass 1463 Comment
  UC10930  Thelypodium crispum M. S. Baker and F. Nutting 1894-7-6 Lassen Dixey Valley Comment
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Oct 10 2006
  HSC69588  Thelypodium flexuosum Gary Schoolcraft 1980-5-16 Lassen SE of Wendel 1220 Comment
  NY215495  Thelypodium flexuosum A. Tiehm 1980-5-29 5745 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 Comment
  CAS-BOT-BC88086  Thelypodium howellii subsp. howellii Arnold Tiehm; Gary Schoolcraft; Jan Nachlinger 1984-6-25 8826 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81. 1828 Comment
  CAS-BOT-BC88088  Thelypodium howellii subsp. howellii Mrs. H. C. Cantelow 1940-5-31 3764 Lassen 7.3 miles east of Bieber. Comment
  CHSC99728  Thelypodium howellii subsp. howellii Lowell Ahart; John Dittes 2008-6-20 14920 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 7.0 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC88110  Thelypodium integrifolium subsp. complanatum T. C. Fuller 1980-9-4 20336 Lassen 0.3 km. south of the Smoke Creek Ranch Road, 2 km. west of the state line, Rush Creek Drainage. Comment
  NY215734  Thelypodium milleflorum G. Schoolcraft 1983-5-24 956 Lassen 1 mile south of Herlong Ca. 1249.7 Comment
  CAS-BOT-BC193469  Thinopyrum ponticum R. E. Frenkel 1964-10-1 918 Lassen On California Hwy. 36, 1.0 mile east of California Hwy. 44, west of Susanville 1493 Comment
  CAS-BOT-BC193474  Thinopyrum ponticum John Thomas Howell 1975-7-23 51409 Lassen Along Hwy. 395 between Johnstonville and Jonesville - Sierra Nevada 1280 Comment
  RSA245272  Tiquilia nuttallii D. H. Norris, Thomas W. Nelson 1971-6-22 19287 Lassen Along Hwy 395 about 4 miles E of Standish Comment
  UC61148  Tiquilia nuttallii J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  POM72574  Tiquilia nuttallii Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.?] 1220 Comment
  CHSC77259  Triantha occidentalis subsp. occidentalis G. Schoolcraft 1997-8-5 2650 Lassen Near Robbers Spring. 1798 Comment
  CAS-BOT-BC220989  Trichostema John Thomas Howell 1976-7-20 52010 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC117523  Trichostema oblongum Lowell Ahart; John Dittes 2016-7-13 21122 Lassen West edge 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) southwesst of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS17721  Trichostema oblongum Rimo Bacigalupi with G. T. Robbins 1955-7-19 5374 Lassen 10.3 mi SE of Adin (along Ash Valley road betw. Adin and Madeline) 1524 Comment
  POM70273  Trichostema simulatum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UCD169305  Trichostema simulatum Lowell Ahart 2003-8-17 10514 Lassen About 8 miles (air) southwest of Susanville, about 1/4 mile southwest of the Susan River, on the east side of Highway 36, on the west side of a paved road. 1433 Comment
  UCD117584  Trientalis latifolia W. W. Robbins 1926-4-17 524 Lassen Grass Valley. Comment
  CAS-BOT-BC219011  Trifolium andersonii subsp. andersonii Jean Langenheim 1957-6-26 4369 Lassen Northwest Said Valley, northeastern part of Lassen County. In silty area Comment
  CAS-BOT-BC219012  Trifolium andersonii subsp. andersonii Alice Eastwood; John Thomas Howell 1940-6-15 8321 Lassen Said Valley Comment
  POM28734  Trifolium andersonii subsp. andersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CHSC91332  Trifolium andersonii var. andersonii Lowell Ahart; John Dittes 2005-6-1 11844 Lassen On both sides 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
  UC165623  Trifolium breweri Milo S. Baker Lassen Comment
  UCSC010335  Trifolium eriocephalum subsp. cusickii Unknown 2016-7-15 21231 Lassen About 80 yards west of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber 1268 Comment
  CHSC117267  Trifolium eriocephalum var. cusickii Lowell Ahart; John Dittes 2016-7-15 21231 Lassen About 80 yards west 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
  UCSC011166  Trifolium geminiflorum Lowell Ahart, John Dittes 2016-7-15 21233 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 air miles northeast of Big Valley Summit, 5.0 air miles southwest of Bieber. 1398 Comment
  UCSC010316  Trifolium hybridum Unknown 2016-6-7 21019 Lassen On the west edge of State Highway 299, Big Valley Mountains, 0.4 air miles northeast of Big Valley Summit, 5.0 air miles southwest of Bieber 1398 Comment
  JEPS127632  Trifolium longipes Alejandro Brambila, Michael Dolan 2016-7-7 CA 320 -156 Lassen Ash Valley road 1 mi past Holbrook Reservoir. Comment
  CHSC91328  Trifolium longipes subsp. hansenii Lowell Ahart; John Dittes 2005-6-1 11867 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
  RSA716039  Trifolium longipes var. nevadense L. Ahart 2005-6-1 11867 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CHSC67223  Trifolium macrocephalum James D. Jokerst 1991-5-29 3304 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
  CAS-BOT-BC230743  Trifolium productum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CAS-BOT-BC230746  Trifolium productum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CHSC68864  Trifolium productum Vernon Oswald; Lowell Ahart 1997-6-24 8636 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
  UCSC011155  Trifolium variegatum Lowell Ahart 2005-6-2 11991 Lassen west side of a poor dirt road, Long Valley, about 4 1/2 miles northeast of the intersection of Scott Road and Highway 70, 6 miles northwest of Hallelujah Junction 1428 Comment
  CHSC93693  Trifolium variegatum var. geminiflorum Lowell Ahart; John Dittes 2005-6-2 11991 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
  JEPS127284  Trifolium variegatum var. variegatum Lowell Ahart, John Dittes 2016-7-13 21120 Lassen 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC165497  Trifolium variegatum var. variegatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3306 Lassen Tule Confederacy Honey Lake Valley Comment
  POM28370  Trifolium variegatum var. variegatum Marcus E. Jones 1897-6-24 7504 Lassen 10 to 15 miles west from Amedee. 1220 Comment
  POM27706  Trifolium wormskioldii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC21232  Triglochin maritima Robert A. Schlising 1974-6-20 3147 Lassen Murrers Upper Meadow, about 2.5 miles east of Eagle Lake Field Station, on the east side of Eagle Lake. Comment
  UC483  Triglochin maritima J. Burtt Davy Jun 17 1897-Jun 24 1897 3331 Lassen Honey Lake Valley 1219 Comment
  POM119456  Triglochin maritima Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  UCD93595  Trisetum canescens John Thomas Howell 1976-7-19 51972 Lassen On Gold Run Creek southwest of Susanville. 1386 Comment
  SEINET10872223  Triteleia montana Mary Merello 1993-6-28 Merello 757 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  SEINET3125312 Image available Triticum aestivum Richard R. Halse 2006-1 6991 Lassen Modoc National Forest, along Blue Lake Road north of Blue Lake, about 15 miles ESE of Likely. 1860 Comment
  SEINET5424376  Triticum aestivum R. R. Halse 2006-8-3 6991 Lassen Modoc National Forest, along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely, in a clear cut area above Parsnip Creek. 1860 Comment
  SD50711  Tsuga mertensiana Darley F. Howe 1959-8-3 Lassen Lassen National Park 2590 Comment
  SEINET7951785 Image available Typha angustifolia M. A. Nods, S. G. Smith 1949-8-20 1473 Lassen N shore of lake 1 mi S of Milford, Honey Lake Valley Comment
  SEINET6194989  Typha latifolia CLM Team 2014-7-29 NV 030 -983 Lassen From Reno head north on 395, turn right onto Red Rock Rd. and proceed roughly 0.5-0.75 of a mile and park at dirt pull off on the right side of the road 1368 Comment
  SD8210  Umbellularia californica J. M. Hutchings, Cleveland 1881-6-19 Lassen Eagle Peak. Comment
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May 12 2020
  JEPS124676 Image available Urtica dioica subsp. holosericea Dixie Funnell 1965-7-12 2081 Lassen Highway 139 , north of Susanville, 23 miles neat Eagle Lake. Comment
  UCD122040  Utricularia macrorhiza Barry Rice 2007-5-26 BR 070501 Lassen Papoose Meadows. 1625 Comment
  CHSC66248  Utricularia minor Vernon H. Oswald; Lowell Ahart 1996-6-24 7869 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  HSC95200  Utricularia minor Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 521 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UCD121864  Utricularia minor Barry Rice 2009-7-5 BR 090705 Lassen at Robbers Spring. Comment
  CHSC65316  Utricularia vulgaris Vernon H. Oswald 1995-8-21 7214 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. At the SW corner of the lake. 1859 Comment
  JEPS96005  Utricularia vulgaris Vernon H. Oswald and Lowell Ahart 1996-6-24 7868 Lassen 2.5 mi. s. Eagle Lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), Papoose Meadows, Papoose Creek where it leaves the n. end of the meadow); Modoc Plateau, Papoose Meadows 1633 Comment
  JEPS3753  Valeriana californica George Gillett 1952-7-29 129 Lassen along trail from Hat Lake to Paradise Valley; Lassen Volcanic Park 2103 Comment
  UC102371  Valeriana occidentalis Mrs. R. M. Austin June 1874 Lassen Willow Creek Valley Comment
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Jul 6 2010
  CAS-BOT-BC528860  Veratrum californicum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49218 Lassen Sierra Nevada, Elysian Valley northwest of Janesville 1325 Comment
  RSA18170  Veratrum californicum Carl B. Wolf 1929-9-1 3776 Lassen Mt. Lassen Natl Park, between Grassy Lake and Snag Lake Comment
  CDA6408  Verbascum thapsus Yeager 1929-8-29 Lassen Honey Lake. 0 Comment
  JEPS24105  Veronica americana Peter H. Raven, Otto T. Solbrig 1958-6-17 13277 Lassen 13.1 mi s of Ravendale (along U.S. Hwy 395) Comment
  RSA523846  Veronica catenata L. R. Heckard, Peter Rubtzoff 1971-8-3 2702 Lassen 1.3 miles west of Pit River bridge at Bieber. Along Pit River overflow at bridge 7-03. 1220 Comment
  UC1023721  Veronica peregrina subsp. xalapensis Francis W. Pennell 1940-6-9 25757 Lassen 4 mi s of Madeline (Route 395) 1615 Comment
  UC1583994  Veronica peregrina subsp. xalapensis G. Schoolcraft 1990-5-15 2045 Lassen about 3 mi s of Nubieber (John's Valley area); John's Valley area 1402 Comment
  CHSC61062  Veronica serpyllifolia subsp. humifusa Vernon H. Oswald; Lowell Ahart 1993-8-3 5746 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  SD61009  Vicia americana subsp. oregana Darley F. Howe 1964-8-1 3909 Lassen Warner Mountains, Modoc National Forest, Parsnip Creek 1890 Comment
  CHSC75500  Vicia americana var. americana Vernon H. Oswald; Lowell Ahart 1999-6-9 9755 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  CHSC83990  Vicia americana var. americana K. R. Stern 1967-6-24 2407 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  SDSU6688  Vicia americana var. americana D. F. Howe 1964-8-1 3909 Lassen Parsnip Creek, Warner Mountains, Modoc National Forest. Comment
  JEPS121271  Vicia villosa Lowell Ahart, John Dittes 2013-7-23 18900 Lassen E side of the road levee, about 100 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC604681  Vicia villosa subsp. villosa Farris Farris 1935-6-30 Lassen 7 mi sw Susanville (Gold Run); Gold Run 1432 Comment
  UC108602  Viola beckwithii T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC67081  Viola purpurea Jeanne Boze 1981-6-13 115 Lassen On the northeast slope of Galletin Peak. 2011 Comment
  CAS-BOT-BC383487  Wyethia mollis Clarence R. Quick 1961-6-21 61 -36 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC383491  Wyethia mollis Margaret Williams; Steven Williams 1974-7-26 74 -L-8 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  HSC81483  Wyethia mollis Thomas W. Nelson, Jane P. Nelson 1980-7-6 6014 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  HSC81805  Wyethia mollis Thomas W. Nelson, Jane P. Nelson 1980-7-6 6032 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  JEPS30484  Wyethia mollis Peter H. Raven with Otto T. Solbrig 1958-6-16 13243 Lassen 5.7 mi w Westwood (on State Highway 36) Comment
  UC1099972  Zannichellia palustris Verne Grant and Irving Schneider 1947-8-1 8242 Lassen e. end Tule Lake Comment
  UCD58789  Zannichellia palustris Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment



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