Search Results — 2000 specimen records retrieved (1605 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
  CDA19020  Abies concolor Mark Lubinski 2000-10-12 PDR 1103214 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36, ~5 mi W of Susanville. 0 Comment
  UC1196917  Abies magnifica var. magnifica A. W. and M. Kildale 1926-9-1 2725 Lassen 11 mi n Chester; Lassen National Park, Juniper Lakes 2054 Comment
  CAS-BOT-BC330611  Acer glabrum var. glabrum John Thomas Howell; Gordon H. True 1973-8-1 50152 Lassen Sierra Nevada. Gold Run Creek road S of Susanville, Diamond Range 1584 Comment
  SEINET7893918  Acer macrophyllum E. Brooks 1927-5-9 s.n. Lassen 80 miles N of Reno. Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  UC1136758  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley 1700 Comment
  SD8826  Achillea millefolium R. M. Austin 1879-1 Lassen Boiling Lake, near Lassen Peak Comment
  CHSC30608  Achnatherum hymenoides R. C. Abbott 1975-6-17 3 Lassen 18.5 m w of road to Lassen Co youth camp, directly e of Eagle Lake Field Station. 1554 Comment
  CHSC93660  Achnatherum hymenoides Lowell Ahart; John Dittes 2005-6-2 11996 Lassen Along a small wash, east 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
  RSA716057  Achnatherum hymenoides L. Ahart, John Dittes 2005-6-2 11996 Lassen Long Valley, about 41/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1428 Comment
  UC1609124  Achnatherum hymenoides Vernon H. Oswald and Lowell Ahart 1993-6-14 5544 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89)); Eagle Lake 1566 Comment
  UCD50593  Achnatherum lemmonii L. Whitney 1933-7-7 s.n. Lassen Halls Flat, Lassen County. 1737 Comment
  UCD18959  Achnatherum nelsonii Jack N. Reppert 1965-7-13 17 Lassen Lassen National Forest, Harvey Valley Allotment (HV-17). 1682 Comment
  CAS-BOT-BC110708  Achnatherum nevadense G. Schoolcraft 1997-6-26 2600 Lassen Large knob between Milford and Janesville. 1676 Comment
  UCD37479  Achnatherum nevadense Beecher Crampton 1960-6-18 5729 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UCD18962  Achnatherum occidentale Jack N. Reppert 1965-7-12 14 Lassen Lassen National Forest, Harvey Valley Allotment (HV 81-76). 1737 Comment
  CHSC109530  Achnatherum occidentale subsp. californicum B. Castro; L. P. Janeway 2003-10-5 1459 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail between Cone Lake and Triangle Lake, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  CAS-BOT-BC218611  Achnatherum occidentale subsp. pubescens John Thomas Howell 1974-7-10 50519 Lassen Janesville, at the cemetery, Sierra Nevada 1295 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
  JEPS114857  Achnatherum thurberianum Lowell Ahart, John Dittes 2008-6-19 14870 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
  RSA647558  Achnatherum thurberianum Marion P. Harthill 1972-6-17 832 Lassen Madeline. 1677 Comment
  RSA700231  Achnatherum thurberianum L. P. Janeway 2001-6-20 7205 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
  UC584246  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2208 Lassen Inspiration Point just w of town Susanville 1280 Comment
  UCD34873  Achnatherum thurberianum Beecher Crampton 1964-6-27 7095 Lassen Lassen County, ca. 5 miles S.W. of Ravendale, BLM land. Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD51441  Achnatherum thurberianum L. Whitney 1935-6-19 3258 Lassen Ashurst Mountain, 13 miles west of upper end of Eagle Lake, Lassen National Forest. 1584 Comment
  UCD32671  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  CHSC117223  Acmispon denticulatus Lowell Ahart; John Dittes 2016-6-7 20996 Lassen West of the pond, 110 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bierber, 7.3 Miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC465624  Aconitum columbianum Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  CDA6765  Acroptilon repens T. C. Fuller 1962-8-29 9486 Lassen Road to Adin, 1 miles east of Lookout, Big Valley. 0 Comment
Read comments
Jun 24 2009
  CAS-BOT-BC391607  Actaea rubra John Thomas Howell; Gordon H. True 1973-8-1 50164 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC5269  Agastache parvifolia J. B. Kimsey 1946-6-10 Lassen 1615 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
  UC1483833  Ageratina occidentalis G. Schoolcraft 1979-8-15 180 Lassen Tule Mountain area Tule Mountain 2042 Comment
  CAS-BOT-BC30235  Ageratina occidentalis Hans Leschke 1956-9-22 s.n. Lassen Near Sulphur Works entrance 2042 Comment
  UC29394  Agoseris grandiflora var. grandiflora M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixie Mt. Dixie Mt. Comment
  CAS-BOT-BC15350  Agoseris heterophylla Doris Kildale Gillespie 1930-5-13 9370 Lassen Between Susanville and Janesville Comment
  UC585117  Agoseris heterophylla var. heterophylla E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1774 Lassen dry sandy wash Red Rock 1280 Comment
  CAS-BOT-BC13413  Agoseris retrorsa Louella Bass 1973-5-29 82 Lassen Elysian Valley 1325 Comment
  UCD55280  Agoseris retrorsa Ellen Dean 2006-5-15 3095 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  CAS-BOT-BC127581  Agropyron cristatum John Thomas Howell 1961-9-25 36970 Lassen Sierra Nevada. East side of Beckwourth Pass. 1554 Comment
  SEINET10964052  Agropyron trachycaulum R. Ondricek 1978-8-2 Ondricek 113 Lassen North edge of dam at Murrers Upper Meadow. T32N, R11E, E edge of Sec. 26, Fredonyer Peak Quadrangle, 15 ft. 1548 Comment
  CAS-BOT-BC127523  Agrostis capillaris Gary Schoolcraft 1984-7-30 1326 Lassen Along Smoke Creek about 5 miles below Big Springs. 1584 Comment
  CAS-BOT-BC127238  Agrostis exarata Malcom A. Nobs; S. Galen Smith 1949-7-21 1057 Lassen 4 miles north of Madeline. Comment
  CAS-BOT-BC139450  Agrostis hyemalis Leo Whitney 1933-8-4 2228 Lassen Meadow near Sheepshead. 1889 Comment
  CAS-BOT-BC139295  Agrostis idahoensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49523 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CHSC58860  Agrostis pallens Vernon H. Oswald; Lowell Ahart 1992-7-16 5107 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
  JEPS71138  Agrostis pallens Brown and Wieslander 73 Lassen Comment
  UCD53118  Agrostis pallens Beecher Crampton 1960-6-20 5732 Lassen Halls's Flat, 1/2 mile south Black's Mtn. Exper. Sta. USDA, 11 miles n.w. Bogard Ranger Station, Lassen Natl. Forest. 1706 Comment
  POM98581  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  CAS-BOT-BC246539  Agrostis stolonifera Leland S. Smith 1919-8-10 1132 Lassen Modoc National Forest, Ash Valley - Templeton's Meadow 1463 Comment
  CHSC29881  Agrostis stolonifera Robin L. Ondricek 1978-8-2 112 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  SEINET5335984  Agrostis stolonifera M. J. Williams 1974-7-26 74 -L-39 Lassen 2 mi. W of Hallelujah Junction, S of highway 70 1494 Comment
  SBBG115824  Agrostis variabilis J. T. Howell, G. H. True 1973-8-1 50234 Lassen Diamond Range, S of Susanville Comment
  UC985665  Alisma gramineum Malcolm A. Nobs and S. Galen Smith 1949-7-22 1074 Lassen marshes along Willow Creek (10 mi n of Susanville); Willow Creek Valley Comment
  UCD137906  Alisma gramineum Malcolm A. Nobs; S. Galen Smith 1949-7-22 1074 Lassen along Willow Creek, Willow Creek Valley, 10 miles north of Susanville. Comment
  UCD150402  Alisma triviale William Anderson 1963-7-10 s.n. Lassen Honey Lake Valley. Comment
  CHSC7661  Allium acuminatum Beverley J. Wise 1969-5-18 138 Lassen 17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  HSC69609  Allium anceps Gary Schoolcraft 1980-4-30 215 Lassen N base of Shaffer Mtn. near Shaffer Well 1354 Comment
  JEPS94130  Allium anceps Vernon H. Oswald and Lowell Ahart 1998-5-22 9102 Lassen ca. 3 mi. n. Doyle (Hackstaff Rd. 1.0 mi. s. of Laver Crossing Rd. 0.2 mi. n. of Fort Sage Rd.) 1316 Comment
  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
  SEINET8466783 Image available Allium anceps D. W. McNeal 1980-6-1 2340 Lassen open flats beside Co. Hwy.#88, between Adin and Madeline, 15.0 mi.e. of HwY. #299 in Adin. Comment
  SEINET3883828  Allium atrorubens Arnold Tiehm, Jan Nachlinger; Margaret Williams 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.; 0 1387 Comment
  JEPS103169  Allium atrorubens var. atrorubens Beth Corbin 2002-6-4 1077 Lassen About 1/8 mi E of Viewland Monument on Hwy 395. 1371 Comment
  CHSC27592  Allium campanulatum Jennifer Estep 1978-7-5 22 Lassen E side of Mahogany Lake, S of Eagle L. 2060 Comment
  UC1133790  Allium campanulatum A. Simontacchi 1940-7-1 935 Lassen 2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC470923  Allium lemmonii B. Bartholomew; B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  HSC22953  Allium lemmonii John Pratt 1970-6-21 32 Lassen 1707 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
  SEINET3878902  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 mi W of Madeline on rd. from Adin.; 0 1676 Comment
  CAS-BOT-BC474076  Allium platycaule John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50684 Lassen South and southeast of Diamond Mountain, Sierra Nevada 2286 Comment
  SEINET3917718  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen California, Lassen County, 10 miles west of Chester, rte. 36.; 0 Comment
  UC1567403  Alopecurus aequalis G. Schoolcraft 1989-7-18 1976 Lassen s. of Clark's Valley Rd. near Buck's Spring 1572 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
  UC1136824  Alopecurus geniculatus George A. Fischer and Irwin H. Johnson 1933-7-11 F 190 Lassen Dry Lake Lassen Nat'l Forest, Grass Valley, Dry Lake 1694 Comment
  RSA715541  Alopecurus pratensis L. Ahart 2005-6-1 11686 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
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CHSC60728  Alyssum desertorum Vernon H. Oswald; Lowell Ahart 1993-6-14 5534 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). Along the edge of the road. 1566 Comment
  UC1609213  Alyssum desertorum Vernon H. Oswald and Lowell Ahart 1993-6-14 5534 Lassen 20 mi e.-n.e. of Spaulding Tract Road ((Rd. 518, 33N89), Eagle Lake Road (Lassen Al) at Sandy Beach on the w. shore of Eagle Lake); Eagle Lake, Sandy Beach 1566 Comment
  SEINET5340073  Alyssum desertorum J. A. Young 1982-1 s.n. Lassen M. Meyer's Ranch, Adin. 1372 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
  CAS-BOT-BC42890  Ambrosia acanthicarpa John Thomas Howell 1961-9-25 36973 Lassen East side of Beckwourth Pass 1554 Comment
  CHSC66845  Ambrosia acanthicarpa Vernon Oswald 1996-10-3 8298 Lassen North of Susanville on Horse Lake Road (Lassen 546) 3.6 mi E of Hwy. 139. Modoc Plateau. 1554 Comment
  JEPS41028  Ambrosia acanthicarpa W. L. Jepson 1939-8-11 19379 Lassen Milford 1280 Comment
  RSA132023  Ambrosia acanthicarpa Delzie Demaree 1959-8-18 41520 Lassen P.O. Termo. Comment
  HSC18512  Amelanchier alnifolia var. semiintegrifolia H. E. Parks, S. T. Parks 1928-6-16 261 Lassen Lassen National Park, Drakesbad 1677 Comment
  UC773882  Amelanchier utahensis L. R. Short 1936-5-22 S- 349 Lassen Burgess Spring Experiment Range; Forest Lassen 1859 Comment
  UCR139398  Amelanchier utahensis P. A. Munz 1947-5-20 11886 Lassen Eastern Sierra Nevada Mtns., Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  CHSC109980  Amphiscirpus nevadensis Richard R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca. 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CHSC5244  Amphiscirpus nevadensis 1946-6-25 Lassen Eagle Lake. 1554 Comment
  CAS-BOT-BC222251  Amsinckia Elmer I. Applegate 1934-5-4 8916 Lassen At south end of Secret Valley Comment
  CDA40473  Amsinckia menziesii var. menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  UC24607  Amsinckia menziesii var. menziesii Milo S. Baker 1893-7-14 Lassen Money Lake Valley Comment
  CHSC25304  Amsinckia tessellata Pauleen Broyles 1977-6-1 151 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  UC1167764  Amsinckia tessellata var. tessellata Peter H. Raven with Otto T. Solbrig 1958-6-17 13276 Lassen 19.0 mi s Ravendale (along US Hwy 395) Comment
  UCD159579  Anaphalis margaritacea D. S. Park 2011-8-24 316 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  JEPS28683  Angelica breweri George W. Gillett 1957-7-26 910 Lassen Lassen Volcanic National Park, e shore of Butte Lake Butte Lake; Lassen Volcanic National Park, Butte Lake 1859 Comment
  CHSC71067  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9121 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CAS-BOT-BC63874  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CHSC36438  Antennaria argentea Dave Leuck 1981-6-13 16 Lassen N. E. side of Galletin Peak. 1706 Comment
  UC1523709  Antennaria argentea Gary Schoolcraft 1981-7-8 501 Lassen north of Coulthurst Flat 1828 Comment
  UCR7842  Antennaria argentea Marilyn Malin 1968-6-27 256 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 Comment
  CHSC54170  Antennaria dimorpha Vernon H. Oswald 1991-5-28 4624 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  HSC68156  Antennaria dimorpha J. P. Smith, J. O. Sawyer 1971-5-23 4657 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  JEPS94489  Antennaria dimorpha Vernon H. Oswald and Lowell Ahart 1997-5-27 8505 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat, betw road and creek paralleling rd to north); Forest Route 38N04 1560 Comment
  UC1137285  Antennaria dimorpha K. E. Bradshaw 1939-5-27 244 Lassen near s end of Black Mt. Experimental Forest; Lassen National Forest, Halls Flat Quad., Thompson Meadow 1737 Comment
  UC585078  Antennaria dimorpha E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1755 Lassen nw-facing slope of ridge e of Redrock 1600 Comment
  CHSC28406  Antennaria geyeri Wayne O. Baum 1971-7-12 71 -54 Lassen E. slope of Gallatain Peak. 1950 Comment
  CHSC60809  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 .1 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  CAS-BOT-BC58691  Antennaria luzuloides John Thomas Howell 1934-7-6 12443 Lassen Harvey Valley Comment
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  POM39269  Antennaria luzuloides Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  RSA32730  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen State highway 36, about 4 miles east of Westwood Comment
  UC585069  Antennaria luzuloides E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1791 Lassen about 2 mi n Madeline 1363 Comment
  CHSC64837  Antennaria luzuloides subsp. aberrans Vernon H. Oswald 1995-6-25 6930 Lassen Modoc Plateau Ash Valley Rd. (Lassen 527), 9.5 mi w of Madeline, on the s side of the reservoir at Fleming Sheep Camp. 1621 Comment
  CAS-BOT-BC26645  Antennaria pyramidata Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  UC584289  Antennaria rosea G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2308 Lassen w of, crest of range head of Stony Ridge Milford; Stony Ridge 1930 Comment
  UCD149585  Antennaria rosea G. Ledyard Stebbins 1982-9-16 C 247 Lassen Vicinity of Eagle Lake. 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
  CHSC65289  Anthemis cotula Vernon H. Oswald; Lowell Ahart 1995-8-14 7175 Lassen Modoc Plateau. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  UC1035982  Apocynum androsaemifolium Helen K. Sharsmith 1955-6-27 4516 Lassen adjacent to Hwy. 89 n. of Hat Creek Ranger Station; Lassen Nat'l Forest 1158 Comment
  POM75751  Apocynum pumilum var. rhomboideum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC392013  Aquilegia Clare B. Hardham 1969-8-28 17453 I Lassen Slope west of Janesville Comment
  CAS-BOT-BC392210  Aquilegia formosa John Thomas Howell 1974-7-10 50545 Lassen Elysian Valley 1325 Comment
  CHSC6240  Aquilegia formosa M. West 1946-6-17 Lassen Aspen Grove on Mt. Fredonyer 2133 Comment
  SEINET10539684  Arabis Paul Gallian, David B. Dunn 1971-6-2 Gallian 496 Lassen Approx 22 mi s of adin on state hwy 139; in basalt. Assoc: juniper, artemisia. 1646 Comment
  RSA0129096  Arabis oligantha Franklin P. Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  JEPS53113  Arabis puberula M. S. Baker and F. P. Nutting 1894-7-2 Lassen s. side Dixey Mts. Comment
  NY119566  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  SEINET5340852  Arabis sparsiflora var. subvillosa R. C. Rollins, K. W. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake. Comment
  NY119631  Arabis suffrutescens G. Schoolcraft 1983-6-29 1038 Lassen Coulthurst Flat area, 34-10-27 SW 1889.8 Comment
  CAS-BOT-BC45906  Arctostaphylos nevadensis Marcus E. Jones 1897-7-7 s.n Lassen Lassen's Peak 1828 Comment
  RSA46474  Arctostaphylos nevadensis Doris K. Kildale 1926-9-11 2764 Lassen Juniper Lake. 2055 Comment
  UC1137730  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 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
  UC584338  Arenaria aculeata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2262 Lassen s Susanville (Bare summit ridge and ridges south west of Diamond Mt.) 2164 Comment
  SEINET10537551  Arenaria aculeata Mary Susan Taylor 1982-8-27 Taylor 5056 A Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  POM101445  Arenaria congesta Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  POM101442  Arenaria congesta var. simulans Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  JEPS94520  Arenaria congesta var. subcongesta Vernon H. Oswald and Lowell Ahart 1997-5-27 8485 Lassen e side of Highway 139 at a small farm pond 38.2 mi n of Susanville (7.4 mi n of Eagle Lake Road); Highway 139 1627 Comment
  CHSC52769  Argemone munita subsp. rotundata L. P. Janeway 1990-7-4 3770 Lassen Dry gravelly bench near east-side of saddle 0.8 mi NE of Meadowview Peak. 1981 Comment
  CHSC65320  Argemone munita subsp. rotundata Vernon H. Oswald; Lowell Ahart 1995-8-14 7204 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) near the S end of Horse Lake, 15.3 mi W of Hwy. 395, N. of Susanville. 1566 Comment
  JEPS124519 Image available Argemone platyceras var. hispida P. C. Billigs 1965-7-12 77 Lassen 1.8 mi south of MIlford on Hwy 395 Comment
  UC71725  Argemone rotundata Mrs. M. H. Manning 1902-9-1 1 Lassen Reno Nevada to Amadee California Amadee Comment
  CHSC107316  Arnica chamissonis Lowell Ahart; John Dittes 2011-6-21 17534 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS35877  Arnica chamissonis C. S. Robinson 1927-7-15 77 Lassen Feather Lake, sw Lassen Co Feather Lake 1737 Comment
  HSC12534  Arnica chamissonis M. S. Baker 28 Jul [year missing] Lassen South of Eagle Lake Comment
  CAS-BOT-BC82311  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mile east of Fredonyer Pass on Highway #36 1706 Comment
  OBI75878  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 SW of SW 1500 Comment
  SEINET8734516 Image available Arnica foliosa var. incana A. L. Hormay 1941-1 8 Lassen Lassen; Sec. 31, T 33N, R. 9 E, Little Valley 1679 Comment
  CAS-BOT-BC82678  Arnica longifolia L. S. Smith 1918-7-22 1007 Lassen Blue Lake, Modoc National Forest 1874 Comment
  CAS-BOT-BC85030  Arnica sororia E. B. Babcock; G. L. Stebbins 1936-6-8 1788 Lassen Gentle north facing slope of hillside, 2 miles north of Madeline. 1371 Comment
  UC1609362  Arnica sororia Vernon H. Oswald and Lowell Ahart 1993-7-8 5668 Lassen Halls Flat Rd (33N18) 0.4 mi sw Pittville Rd. (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, between road and open meadow to w) 1706 Comment
  GMDRC6956  Artemisia arbuscula subsp. arbuscula J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31433 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  CHSC118472  Artemisia arbuscula subsp. thermopola Don Lepley 2016-7-31 Lassen Between Feather Lakes and Highway 44, approximately 5 air miles southeast of Bogard Rest Area; a little less than a third of a mile north of railroad crossing on Highway 44. 40N31:50.1 x 121W01:51.8. 1748 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
  SEINET6775323 Image available Artemisia cana subsp. bolanderi G. Schoolcraft 1979-10-3 198 Lassen In Dry Valley, just west (0.25 miles) of Dry Valley Gap 1615 Comment
  RSA518443  Artemisia douglasiana George K. Helmkamp 1990-9-23 G- 9 Lassen N of Ravendale 1677 Comment
  CAS-BOT-BC90328  Artemisia douglasiana Ynez Whilton Winblad 1935-9-28 s.n. Lassen Horse Lake Comment
  UC1776711  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfield and Bass Hill Roads 1322 Comment
Read comments
Aug 12 2019
  CAS-BOT-BC93742  Artemisia ludoviciana subsp. incompta Louella Bass 1974-7-1 s.n. Lassen Sierra Nevada - Elysian Valley Comment
  CHSC5197  Artemisia tridentata P. Balch 1955-7-10 Lassen Fields adjoining Stafford's Ranch, Eagle Lake. 1584 Comment
  CHSC76080  Artemisia tridentata subsp. tridentata Lowell Ahart; Vernon H. Oswald 1999-9-13 8202 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
  RSA0092309  Artemisia tridentata subsp. tridentata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31432 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  UC1136979  Artemisia tridentata subsp. tridentata L. R. Short 1936-9-30 S- 505 Lassen MDM, Burgess Spr. Exp. Range Lassen National Forest, MDM, Burgess Spr. Exp. Range 1752 Comment
  SEINET230066  Artemisia tridentata subsp. vaseyana Leila M. Shultz, John S. Shultz 1985-6-23 8604 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  CHSC51995  Asclepias fascicularis Cindy Prouty 1978-7-3 23 Lassen SE Eagle L.--near Eagle Lake Field Station. 1572 Comment
  JEPS123853  Asclepias fascicularis Lowell Ahart, John Dittes 2015-7-14 20325 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC1096430  Asclepias speciosa George A. Fischer, Irwin H. Johnson 1933-7-29 F- 276 Lassen Stringer Lassen National Forest 1694 Comment
  UC1136827  Asclepias speciosa George A. Fisher, Irwin H. Johnson 1933-7-29 F Lassen Stringer Lassen National Forest 1694 Comment
  RSA0027352  Astragalus John F. Emmel 1994-7-17 1327 Lassen Summit area of Observation Peak. 2378 Comment
  CAS-BOT-BC177324  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles N WW of Termo 1615 Comment
  CAS-BOT-BC177442  Astragalus andersonii Alice Eastwood; John Thomas Howell 1940-6-16 8332 Lassen Near Susanville Comment
  POM45143  Astragalus andersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  SEINET10450638  Astragalus andersonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17802 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine alon ghigh ridge and in sandy wash. 1402 Comment
  SEINET10874238  Astragalus andersonii Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 861 Lassen Collected at jct of hwy 70 & 395 at arco station. Comment
  RSA614442  Astragalus anxius M. L. Carlson 1996-6-11 4202 Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET2059942 Image available Astragalus argophyllus var. argophyllus Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10347 Lassen 1 mi W of the State line on the dirt road from Hwy 395 to Smoke Creek, S side of Rush Creek 1341 Comment
  CHSC5278  Astragalus canadensis var. brevidens 1944-6-28 Lassen Eagle Lake. 1615 Comment
  CHSC63396  Astragalus canadensis var. brevidens Vernon H. Oswald 1994-7-8 6368 Lassen Wildlife Viewing Area along Hwy. 139 on the NE shore of Eagle Lake, 5.9 mi S of County Rd. 201 (A1). 1557 Comment
  RSA415412  Astragalus canadensis var. brevidens Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1567413  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen along n shore Eagle Lake; n shore Eagle Lake 1554 Comment
  CAS-BOT-BC178763  Astragalus canadensis var. brevidens John Thomas Howell 1977-8-11 52718 Lassen EAst of Beckwourth Pass, near Halleluja Junction - Sierra Nevada 1554 Comment
  SEINET5323826  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. East of Madeline Plains 1713 Comment
  UCD104693  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  CDA26651  Astragalus curvicarpus T. C. Fuller 1965-6-3 13607 Lassen 1.3 miles west-northwest of Janesville. 0 Comment
  SEINET948261  Astragalus curvicarpus Ira. L. Wiggins, Dorothy B. Wiggins 1961-1 16331 Lassen Gravelly slopes at margin of grain field 13.5 mi. E of Susanville, sec 36 Comment
  CAS-BOT-BC177847  Astragalus curvicarpus var. curvicarpus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville Comment
  UCD55155  Astragalus curvicarpus var. curvicarpus Ellen Dean 2006-5-15 3043 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  CAS-BOT-BC177842  Astragalus curvicarpus var. curvicarpus M. E. Jones 1897-6-24 s.n. Lassen 10 to 15 mi. w. of Amedee 1219 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
  SEINET7103940  Astragalus curvicarpus var. curvicarpus D. W. McNeal 1983-6-5 2839 Lassen Hwy #395, 9.2 mi N of the Plumas Co. line.; 0 Comment
  UCD104697  Astragalus filipes Ellen Dean 2006-5-15 3061 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
  CHSC116921  Astragalus geyeri J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CAS-BOT-BC186858  Astragalus gibbsii Louella Bass 1973-6-3 96 Lassen Elysian Valley 1325 Comment
  POM26155  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  SEINET3142990  Astragalus gibbsii E. K. Balls 1950-5-9 15949 Lassen 6 mi S of Doyle, Hwy 395 1372 Comment
  CAS-BOT-BC186866  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1944-5-29 5951 Lassen Constantin 1371 Comment
  CAS-BOT-BC186867  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1942-5-22 4541 Lassen Loyalton 1524 Comment
  CDA26675  Astragalus gibbsii Taylor Jun 1938 Lassen Susanville. 0 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 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
  NY675142  Astragalus iodanthus var. diaphanoides A. Tiehm 1980-5-29 5755 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  CAS-BOT-BC229046  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC229047  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC229051  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC115597  Astragalus lemmonii Lowell Ahart; John Dittes 2015-7-14 20336 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
  RSA0035824  Astragalus lemmonii Lowell A. Ahart, John Dittes 2008-6-20 14968 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
  NY675509  Astragalus lentiginosus var. chartaceus H. D. D. Ripley 1943-6-14 5744 Lassen Hidden Valley east of Susanville 1311 Comment
  RSA754376  Astragalus lentiginosus var. lentiginosus Brian Knaus 2005-6-14 136 Lassen W of Susanville, at junction of hihways 26 and 44. 1502 Comment
  RSA112071  Astragalus lentiginosus var. salinus H. D. Ripley, R. C. Barneby 1943-6-13 5678 Lassen N. of Doyle 1265 Comment
  CDA26707  Astragalus malacus T. C. Fuller 1963-6-11 10659 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  RSA415816  Astragalus malacus Christopher Davidson 1975-6-7 2748 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1128893  Astragalus obscurus A. Simontacchi 1940-5-17 748 Lassen 1.1 mi ssw Dixie Spring (Lassen National Forest); Halls Flat Quad., , ssw of Dixie Sprin Comment
  CAS-BOT-BC192844  Astragalus pulsiferae A. A. Heller; P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  UC13449  Astragalus pulsiferae J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Long Valley, Honey Lake Valley, Chat (Long Valley, Honey Lake Valley) Comment
  SEINET4853425  Astragalus pulsiferae var. coronensis Unknown 2001-6-14 28158 Lassen E of Hwy 395, rd to Rams Horn Spring campground. 1540 Comment
  CHSC91331  Astragalus pulsiferae var. pulsiferae Lowell Ahart; John Dittes 2005-6-1 11871 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  RSA0006849  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 Comment
  HSC82244  Astragalus purshii var. lectulus Thomas W. Nelson, Jane P. Nelson 1980-7-6 5989 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC194094  Astragalus purshii var. purshii Clare B. Hardham 7446 Lassen Diamond Peak 2286 Comment
  CHSC107091  Astragalus purshii var. purshii V. Lockie 2010-4-25 Lassen SW of Rice Canyon Road. In the middle of an old logging road. 1618 Comment
  CHSC60739  Astragalus purshii var. purshii Vernon H. Oswald; Lowell Ahart 1993-6-14 5520 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  JEPS107439  Astragalus purshii var. purshii Lowell Ahart, John Dittes 2005-6-1 11870 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
  UC1128894  Astragalus purshii var. tinctus K. E. Bradshaw 1939-5-27 235 Lassen Black Mountain Experimental Forest-Plot 39-1 center of plot Halls Flat Quad., Lassen National Forest Comment
  UC13456  Astragalus purshii var. tinctus L. T. Stephenson Sept., 1897 Lassen Chat Comment
  RSA60318  Astragalus purshii var. tinctus E. K. Balls 1950-5-9 15955 Lassen 0.5 mi. south of Modoc Co. Line, Hwy 395. 1220 Comment
  UC82576  Astragalus spaldingii unknown 1892-6-22 Lassen Honey Lake Comment
  UC13372  Astragalus whitneyi M. S. Baker and F. Nutting 1894-7-3 Lassen s side Dixey Mts. Comment
  UCD105481  Astragalus whitneyi B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  CAS-BOT-BC200875  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 7 miles below Eagle Lake 1524 Comment
  CAS-BOT-BC199134  Astragalus whitneyi var. siskiyouensis H. D. Ripley; R. C. Barneby 1943-6-14 5747 Lassen Hidden Valley E of Susanville 1584 Comment
  CAS-BOT-BC198723  Astragalus whitneyi var. whitneyi Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km airline distance east of Ravendale 2194 Comment
  CAS-BOT-BC66017  Athyrium filix-femina var. cyclosorum B. C. Cain 1925-8-24 120 Lassen 1 mile below Drakesbad, Mt. Lassen Nat. Park Comment
  CHSC71080  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1998-5-22 9130 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Along a streamlet. 1463 Comment
  NY652203  Atriplex argentea var. hillmanii G. Schoolcraft 1989-5-16 1874 Lassen West of Highway 395 about 2 miles south of Karlo turnoff 1356.4 Comment
  CHSC110306  Atriplex confertifolia L. P. Janeway; B. Castro 2012-7-2 10924 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC36483  Atriplex confertifolia Margaret E. Halloran 1982-6-2 6 Lassen Ravendale Rd e of Horse Lake. Comment
  UC769938  Atriplex confertifolia R. F. Hoover 1940-10-5 4663 Lassen Wendel Comment
  UCD97425  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  CHSC65305  Atriplex rosea Vernon H. Oswald; Lowell Ahart 1995-8-14 7174 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  POM35967  Balsamorhiza deltoidea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC68609  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1997-5-7 8402 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. 1420 Comment
  CHSC25298  Balsamorhiza hookeri Pauleen Broyles 1977-5-30 140 Lassen Spencer's Basin ca 8 km N of Herlong. 1770 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
  CAS-BOT-BC106495  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-12 9318 Lassen Fredonia Pass near Susaville Comment
  CAS-BOT-BC100053  Balsamorhiza lanata B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6557 Lassen Just S of Ravendale 1580 Comment
  UCD20370  Balsamorhiza macrolepis Tom Vestal DVM 2002-5-23 s.n. Lassen south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir. Comment
  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
  CHSC68741  Barbarea orthoceras Vernon H. Oswald; Lowell Ahart 1997-5-27 8501 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi easat of Hwy. 139. On the flood plain of a creek paralleling the road. 1546 Comment
  SEINET10970556  Barbarea orthoceras Katherine L. Morris 1973-5-25 Morris 244 Lassen Collected 13.7 mi nw of the jct of hwy 36 and 44 on hwy 44, in an area of yellow pine, fir, and ribes. Comment
  CDA36736  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. Comment
  RSA783700  Bassia hyssopifolia R. R. Halse 2010-8-25 8088 Lassen Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake. 1559 Comment
  HSC9041  Beckmannia syzigachne Fred Kindel 1955-6-24 Lassen Mt.Meadows Reservoir Comment
  UC37450  Beckmannia syzigachne J. Burtt Davy Jun 17 1897-Jun 24 1897 3315 Lassen Honey Lake Valley Comment
  CDA20580  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau; Anderson Ranch (southern Lassen County). 1478 Comment
Read comments
Aug 25 2008
  NY833352  Berteroa incana A. Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles west of highway 395 on highway 70 then 5.5 road miles north on Scott Road 1494 Comment
  JEPS113921  Berteroa incana William Harnach 2006-5-31 1229 Lassen Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch). Comment
  HSC95181  Betula glandulosa Gordon Leppig 1998-7-12 957 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC117276  Bidens cernua Lowell Ahart; John Dittes 2016-7-15 21225 Lassen On the west side of the road about 600 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC1342  Bistorta bistortoides L. Harmon 1946-6-23 Lassen Squaw Valley. Comment
  HSC22872  Bistorta bistortoides John Pratt 1970-6-13 8 Lassen 1677 Comment
  CAS-BOT-BC128044  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CHSC64750  Blepharipappus scaber Vernon H. Oswald 1995-5-31 6794 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CHSC93244  Blepharipappus scaber John Dittes; Scott Chamberlain 2004-6-28 1006 Lassen Modoc Plateau; Long Valley; ca. 2.3 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 2.7 air-miles west of Hwy 395, ca. 1.2 air-miles east of Plumas County line; near meadow edge. 1443 Comment
  CHSC99132  Blepharipappus scaber Lowell Ahart; John Dittes 2008-6-19 14876 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
  JEPS114752  Blepharipappus scaber Lowell Ahart, John Dittes 2008-6-19 14876 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  RSA17718  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen South end of Secret Valley Comment
  SEINET11261378  Blepharipappus scaber Stanley L. Welsh, N. Duane Atwood 2001-6-14 28156 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1539 Comment
  CAS-BOT-BC128031  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo Comment
  SEINET10757900  Blepharipappus scaber Billy Joe Cox 1971-6-2 Cox 2984 Lassen Appox. 12 mi. S of Adin on CA. Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  SEINET7379326 Image available Blepharipappus scaber J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  UCD129603  Blepharipappus scaber Glenn W. Turner 1978-7-5 39 Lassen around 1.5 miles south of Termo along California State Highway 395. Comment
  CAS-BOT-BC14089  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 miles SE of Nigger Cabin. 1737 Comment
  CHSC75475  Boechera puberula Vernon H. Oswald; Lowell Ahart 1999-6-9 9761 Lassen Bizz Johnson Trail just east of Devils Corral Trailhead located off of Hwy. 36 between Susanville and Fredonyer Summit. Adjacent to trail. 1420 Comment
  CAS-BOT-BC14514  Boechera puberula H. D. Ripley; R. C. Barneby 1944-3-30 5890 Lassen North of Madeline. 1706 Comment
  UCD114424  Boechera puberula Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  CHSC60730  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1993-6-14 5512 Lassen Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. Roadside. 1810 Comment
  JEPS84940  Boechera retrofracta Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen n.e. side Honey Lake (e. of road over saddle on w. side of Skeedaddle Mountains); Skeedaddle Mountains 1645 Comment
  RSA0090999  Boechera retrofracta Dean Wm. Taylor 2009-5-21 20602 Lassen Susanville; Susanville Peak, easterly flank along logging road trending northward from Susanville Indian Rancheria. 1600 Comment
  SEINET12627116 Image available Boechera retrofracta Martin Schilling 2013-1 MS 257 Lassen Hat Creek overlook area, off Hwy 44, 2.86 air mi E of Sugarloaf Peak, 5 air mi NE of Hat Creek Hill, on W-facing slope, between rocks 1500 Comment
  CAS-BOT-BC25507  Boechera retrofracta Doris Kildale Gillespie 1930-5-14 9383 Lassen 5 miles west of Susanville. Comment
  CAS-BOT-BC25511  Boechera retrofracta Clarence Roy Quick 1961-6-21 61 -24 Lassen Black Mountain Experimental Forest northeast of Lassen Peak. Forest adjacent to Road 21. 1798 Comment
  CHSC36460  Boechera sparsiflora Susan H. Euing 1982-6-6 14 Lassen Pine Creek below fish trap. Comment
  POM254312  Boisduvalia macrantha Alice Eastwood, John Thomas Howell 1940-6-11 7973 Lassen Big Valley Mountains. Comment
  JEPS95898  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1999-9-13 8221 Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  CAS-BOT-BC127868  Brickellia greenei Clare B. Hardham 1969-8-28 17430 A Lassen Granitic slope west of Janesville Comment
  UCR202646  Brickellia microphylla George K. Helmkamp 1990-9-23 B- 15 Lassen Modoc Plateau, Susanville 1189 Comment
  RSA712894  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  UC1137774  Brodiaea coronaria subsp. coronaria August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest 1706 Comment
  UC1249280  Brodiaea coronaria subsp. coronaria Arthur Cronquist and Arthur H. Holmgren 1959-6-18 8485 Lassen 5 mi s Adin Comment
  RSA0065492  Bromus breviaristatus Marion P. Harthill 1971-6-21 208 Lassen Susanville. Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
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Jun 19 2008
  CAS-BOT-BC149582  Bromus carinatus var. carinatus Clare B. Hardham 1971-8-22 18403 A Lassen Sierra Nevada. Diamond Mountain. Comment
  CHSC23516  Bromus carinatus var. marginatus Wayne O. Baum 1971-7-5 71 -13 Lassen E. slope of Gallatin Peak. 1981 Comment
  UCD59087  Bromus carinatus var. marginatus L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Lassen Forest. 1828 Comment
  UCD59098  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  CHSC118475  Bromus carinatus var. marginatus Don Lepley 2016-7-20 Lassen Eagle Lake Ranger District. Uphill side of Road 29N43.2 at outlet of Aspen Flat (tributary to Baxter Creek). 2026 Comment
  UCD32667  Bromus commutatus Beecher Crampton 1954-7-5 2067 Lassen Lassen County, 5 miles west of Susanville. 1447 Comment
  UCD58468  Bromus commutatus Beecher Crampton 1954-7-5 2067 Lassen Along Hwy. 36. 5 miles west of Susanville. Comment
  UCD58839  Bromus inermis M. C. Collins 1926-6-14 s.n. Lassen Susanville. Comment
  UCD58854  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  CDA1827  Bromus japonicus A. A. Beetle 1941-6-28 2809 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 Comment
  CHSC99519  Bromus japonicus Lowell Ahart; John Dittes 2008-6-19 14875 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
  UC60732  Bromus secalinus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  UC1131324  Bromus suksdorfii A. Simontacchi 1940-6-24 891 Lassen 6.4 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1950 Comment
  CAS-BOT-BC161418  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49520 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC161420  Bromus tectorum Margaret Williams; Steven Williams 1974-7-26 74 -L-2 Lassen Sierra Nevada. Near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  NY664614  Bromus tectorum See comments 1935-6-15 Lassen Susanville 1310.6 Comment
  UC1024646  Bromus tectorum Leo Whitney 1933-7-8 2209 Lassen 8 mi nw of Eagle Lake (Lassen National Forest, Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UC1024960  Bromus tectorum Leo Whitney 1935-6-24 3301 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UC1137124  Bromus tectorum August L. Hormay 1929-5-20 Lassen Lassen National Forest, Hat Creek Hat Creek; Lassen National Forest, Hat Creek Comment
  UCD59756  Bromus tectorum August L. Hormay 1932-5-20 s.n. Lassen Lassen National Forest. Hat Creek. Comment
  CAS-BOT-BC438314  Calandrinia ciliata T. L. Secrest 1961-6-8 s.n. Lassen Edge of McCoy Flat Reservoir, ca. 14 mi. n. of Westwood Comment
  JEPS124785 Image available Callitriche palustris M. L. Wheelis 1964-7-1 136 Lassen Loc. bridges between Bieber and New Bieber. Comment
  JEPS88592  Callitriche verna Vernon H. Oswald and Lowell Ahart 1996-6-24 7870 Lassen 2.5 mi s Eagle Lake (and 0.5 mi e of Eagle Lake Rd (A1), along Papoose Creek where it leaves the n end of the meadow, Papoose Meadows); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  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
  HSC15427  Calochortus coeruleus H. E. Parks, S. T. Parks Jun 1928 9253 Lassen Lake Almanor Comment
  CHSC6270  Calochortus leichtlinii W. Vinyard 1946-6-17 Lassen Mt. Fredonyer, Eagle Lake. 2133 Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  RSA377380  Calochortus leichtlinii Christopher Davidson 1974-7-25 2498 Lassen Lassen Volcanic National Park, road to Juniper Lake 2134 Comment
  CHSC27653  Calochortus macrocarpus Cindy Prouty 1978-7-26 9 Lassen Lower Dry L.; SE of Eagle L. 1645 Comment
  CHSC6271  Calochortus macrocarpus A. Santos 1946-7-5 Lassen East side of Eagle Lake. 1615 Comment
  SEINET3260040 Image available Calochortus macrocarpus Marcus E. Jones 1897-7-1 Lassen Susanville at Perkin's Ranch. 1520 Comment
  CAS-BOT-BC273284  Calycadenia fremontii Barrett Anderson 1986-7-9 3125 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  CHSC36436  Calyptridium umbellatum Dave Lueck 1981-6-13 18 Lassen Dirt road at base of N. E. side of Galletin Peak. 1584 Comment
  CHSC6233  Calyptridium umbellatum L. Harman 1946-6-23 Lassen Roop mountain. 2133 Comment
  UC1537347  Calyptridium umbellatum Gordon H. True Jr. 1936-6-25 534 Lassen Hall's Valley 1524 Comment
  CHSC7660  Camassia quamash Beverly J. Wise 1969-5-18 142 Lassen Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake. 1554 Comment
  CAS-BOT-BC497000  Camassia quamash Luella Bass 1980-6-14 EV 2 - 80 Lassen Elysian Valley Comment
  OBI75874  Camassia quamash Anthony Baniaga 2011-6-7 312 Lassen Lassen Natl Forest. NW area of Grays Valley, just S of intersection of 33N11 and 32N 83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  UC1134560  Camassia quamash subsp. breviflora A. Simontacchi 1940-5-17 736 Lassen 5.9 mi s of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 Comment
  CAS-BOT-BC497551  Camassia quamash subsp. breviflora Elmer I. Applegate 1934-5-4 8936 Lassen Elysian Valley northwest of Janesville 1325 Comment
  JEPS109919  Camelina microcarpa D. W. Taylor 2007-6-14 20130 Lassen S end of Grasshopper Valley County Road 512 1 mile W of junction with Hwy 139. 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
  NY661118  Camelina microcarpa G. Schoolcraft 2000-5-24 2896 Lassen Near Ducasse Reservoir south of Termo, CA. 1645.9 Comment
  SEINET10480825  Camelina microcarpa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17759 Lassen Approx 12 mi s of adin on state hwy 139, in basalt and clay; along edge of rd on rolling knoll, in artemisia-juniper assoc. 1372 Comment
  SBBG70392  Camelina sativa subsp. sativa H. and M. Dearing 1939-6-6 3564 Lassen Bieber Comment
  POM38357  Camissonia andina Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  POM39324  Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  UCR183189  Camissonia boothii subsp. alyssoides Jim Andre, G. L. Clifton 1993-5-28 7710 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  NY851232  Camissonia claviformis var. cruciformis A. A. Heller 1938-6-23 15211 Lassen U.S. Highway #395, about midway between Mapes and Secret Valley 1372 Comment
  RSA294815  Camissonia minor Arnold Tiehm 1980-5-29 5752 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  RSA186551  Camissonia parvula Peter H. Raven 1962-5-28 17870 Lassen Along U.S. Highway 395, 32 miles south of Milford Comment
  HSC16514  Camissonia tanacetifolia K. P. St. John 1965-5-6 29 Lassen 6 mi. N of Litchfield on Hwy. 395 Comment
  RSA144901  Camissonia tanacetifolia G. I. Stage, R. Thorp 1959-6-21 59 -117 Lassen 5.1 miles north of Termo Comment
  POM38821  Camissonia tanacetifolia subsp. tanacetifolia Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA60365  Camissonia tanacetifolia subsp. tanacetifolia E. K. Balls 1950-5-9 15954 Lassen 0.5 mi. south of Modoc Co. Line, Highway 395 1220 Comment
  RSA149125  Cardaria pubescens I. L. Wiggins, Dorothy Wiggins 1961-6-16 16529 Lassen 4.1 miles E of Bieber. 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
  CHSC112417  Carex Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18770 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
  JEPS28340  Carex abrupta George W. Gillett 1957-7-21 867 Lassen 300 yards n trail summit (Juniper Lake - Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  RSA702447  Carex abrupta L. P. Janeway 2004-6-26 8170 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  CAS-BOT-BC17908  Carex angustata George Wilson Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. South Shore of Snag Lake. 100 yards from lake. 1850 Comment
  UC190429  Carex angustata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC60428  Carex athrostachya Mary Ann Showers 1992-6-13 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  POM313130  Carex athrostachya H. L. Mason 1947-7-9 13300 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  SD130377  Carex athrostachya John Thomas Howell 1973-7-10 49780 Lassen Sierra Nevada; open Jeffrey pine forest, Fredonyer Pass. 1737 Comment
  POM80803  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1748339  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen NW corner of Upper Stephens Meadow (Upper Pine Creek near Stephens Camp); High Cascade Range 1900 Comment
  CHSC68770  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8502 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  CHSC91329  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
  HSC48336  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19246 Lassen 2 mi. N of Westwood Comment
  HSC66737  Carex douglasii J. P. Smith, J. O. Sawyer 1971-5-23 4664 Lassen Along Hwy. 139, 1 mi. S of jct. with road to Thermo Comment
  HSC82188  Carex douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6037 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  SEINET10437847  Carex douglasii B. L. Wilson, P. Zika 2011-8-7 16803 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  UC190403  Carex douglasii M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixey Valley Comment
  UC1924590  Carex douglasii Debra Valov 2006-5-28 2006020 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CHSC89755  Carex filifolia var. erostrata L. P. Janeway 2004-6-26 8162 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 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
  CHSC77247  Carex fracta G. Schoolcraft 1997-7-30 Lassen Slope of Diamond Mtn. 1889 Comment
  UCD140369  Carex haydeniana John Thomas Howell 1934-6-14 12163 Lassen near Lost Lake, Warren Mountains. Comment
  HSC103621  Carex heteroneura Thomas W. Nelson, Jane Nelson 1985-8-10 8024 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  HSC48184  Carex hoodii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19242 Lassen 2 mi. N of Westwood Comment
  SEINET7561726 Image available Carex hoodii L. P. Janeway 2003-7-24 7917 Lassen Swain Mountain 7.5' quad. 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
  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
  CHSC110898  Carex integra Lowell Ahart; John Dittes 2012-7-9 18299 Lassen In the meadow, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET4292184 Image available Carex integra Unknown 2003-1 7916 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. Swain Mountain 7.5' quad. Comment
  HSC103673  Carex lenticularis var. lipocarpa Thomas W. Nelson, Jane Nelson 1985-8-10 8023 Lassen Margin of pond along south side of lava flow on west side of Silver Lake 1829 Comment
  HSC103598  Carex leporinella Thomas W. Nelson, Jane Nelson 1985-8-10 8012 Lassen Along north side of Silver Lake campground 1829 Comment
  UC1133499  Carex microptera A. Simontacchi 1940-7-3 917 Lassen 3.5 mi wsw Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS103202  Carex microptera G. Schoolcraft 1994-7-7 2366 A Lassen south end of Warner Mountains West of Boot Lake 2194 Comment
  CHSC99782  Carex nebrascensis Lowell Ahart; John Dittes 2007-6-20 15019 Lassen On wet soil or in shallow water on the north side of the levee, about 90 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
  UC1100497  Carex nebrascensis Verne Grant and Herbert L. Mason 1947-7-9 13301 Lassen 5 mi e Bieber Comment
  UCD140678  Carex nebrascensis Beecher Crampton 1964-6-26 7077 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  CAS-BOT-BC119255  Carex pachystachya John Thomas Howell 1934-7-6 12452 Lassen Harvey Valley. Comment
  CAS-BOT-BC119044  Carex pellita Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1828 Comment
  JEPS106522  Carex petasata L. P. Janeway 2004-6-26 8139 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  CHSC108016  Carex praegracilis Lowell Ahart; John Dittes 2011-6-20 17477 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
  JEPS107839  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11859 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  UC1776678  Carex praegracilis G. Schoolcraft 1995-5-22 2484 Lassen East of Skedaddle Ranch 1554 Comment
  CAS-BOT-BC118026  Carex rossii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49195 Lassen Elysian Valley NW of Janesville. 1325 Comment
  CAS-BOT-BC118027  Carex rossii John Thomas Howell; Gordon H. True 1973-8-1 s.n. Lassen Headwater of Baxter Creek, Diamond Mts. 2164 Comment
  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
  CAS-BOT-BC118229  Carex scopulorum var. bracteosa John Thomas Howell 1934-6-14 12162 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC114421  Carex simulata Allison Sanger 2012-7-31 Lassen Cooper Swamp, east of Silver Lake across Road 32N10, approximately 36 air miles west-northwest of Susanville. 1956 Comment
  UC1108042  Carex specifica E. B. Copeland 1932-8-15 Lassen woods between Hat Lake and Summit Lake; Mount Lassen 1981 Comment
  RSA201855  Carex subfusca Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  SEINET4170122  Carex subfusca Unknown 1966-6-24 Lassen Above Blue Lake, Warner Mountains, ca. 18 mi airline mi S. E. of Likely 1905 Comment
  CHSC60439  Carex utriculata Mary Ann Showers 1992-6-13 2544 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC76792  Carex utriculata L. P. Janeway 1999-9-5 6580 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  CAS-BOT-BC115282  Carex utriculata W. B. Cooke; V. G. Cooke 1976-10-7 53193 Lassen Butte Lake, Near lake shore, Lassen Volcanic National Park. Comment
  HSC103677  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8029 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  CAS-BOT-BC114884  Carex whitneyi Hans Leschke 1958-8-15 s.n. Lassen Trail Butte-to Snag Lake near Lava beds. 1920 Comment
  CHSC106687  Castilleja angustifolia Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and trail to Indian Springs. 1439 Comment
  JEPS79146  Castilleja angustifolia L. R. Heckard with R. Bacigalupi 1980-6-11 5249 Lassen about 8 mi ne Litchfield (along U.S. Hwy 395) 1371 Comment
  UC1483848  Castilleja applegatei G. Schoolcraft 1979-7-5 123 Lassen se of Observation Mountain Lookout (top of Observation Mountain); Observation Mountain 2407 Comment
  CAS-BOT-BC249614  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-21 44 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  CAS-BOT-BC249622  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-9 12527 Lassen Harvey Valley Comment
  CHSC6267  Castilleja applegatei subsp. pinetorum M. West 1946-6-20 Lassen Meadown above Grasshopper Valley. 1645 Comment
  JEPS94529  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1997-6-24 8642 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  RSA428370B  Castilleja arachnoidea Christopher Davidson 1974-7-25 2500 Lassen Lassen Volcanic nat. Park, at Juniper Lake. 2134 Comment
  UC1137570  Castilleja campestris subsp. campestris A. Simontacchi 1940-6-30 913 Lassen s shore Government Lake; Lassen National Park, Halls Flat Quad. 1524 Comment
  UC1484795  Castilleja campestris subsp. campestris Noel H. Holmgren and Patricia K. Holmgren 1978-6-10 8903 Lassen 9 mi ene Termo (and 8 air distance); Madeline Plains, Coyote Flat 1630 Comment
  CHSC66262  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1996-6-24 7842 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow. 1633 Comment
  JEPS118272  Castilleja lacera Lowell Ahart, John Dittes 2011-6-20 17500 Lassen In ditch along the north side of the road, about 40 yards east of the stream about 40 yards east 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
  UC199374  Castilleja lacera Milo S. Baker Jul 1894 Lassen Dixie Valley Comment
  UC726418  Castilleja lacera A. A. Heller 1941-6-26 16234 Lassen ridge w Nieubieber Comment
  HSC20530  Castilleja linariifolia M. T. Milligan 1964-8-6 208 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS80682  Castilleja linariifolia L. R. Heckard and T. I. Chuang 1981-6-10 5533 Lassen e side (s end) Eagle Lake (along Route 139) 1524 Comment
  CAS-BOT-BC244895  Castilleja miniata Clare B. Hardham 1969-8-28 17424 Lassen Granitic slope west of Janesville Comment
  JEPS10806  Castilleja miniata Brown and Wieslander 1922-7-23 67 Lassen Martin Springs; Eagle Lake Comment
  JEPS17633  Castilleja miniata Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5402 Lassen 2.3 mi s of and below Patterson Ranger Station (meadowy spots along East Creek on grade, 0.8 mi s of Lassen-Modoc County line, s-end of Warner Mts); Warner Mts., East Creek 2011 Comment
  CAS-BOT-BC244890  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen Foot of Lassen Butte Comment
  CHSC37346  Castilleja pilosa Jenifer Estep 1978-6-27 17 Lassen SE of Eagle L. at Mahogany L. Comment
  UC1063499  Castilleja pilosa A. Simontacchi 1940-6-30 910 Lassen 4.2 mi s Blacks Mtn.; Lassen National Park, Halls Flat Quad. 1699 Comment
  POM43075  Castilleja psittacina Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA505409  Castilleja psittacina R. C. Bacigalupi, S. Galen Smith 1957-6-28 6004 Lassen 5.9 miles south of Madeline. 1616 Comment
  CHSC93238  Castilleja tenuis John Dittes; Scott Chamberlain 2004-6-28 1014 Lassen Modoc Plateau; Long Valley; ca. 2.2 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. 1445 Comment
  CHSC99525  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-22 15027 Lassen Along a small natural drainage, about 20 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  HSC103924  Castilleja tenuis L. Ahart, John Dittes 2008-6-22 15027 Lassen Big Valley; ~5 mi. (air) NE of Bieber, and ~2.1 mi. (air) NE of the Headquarters at Ash Creek State Wildlife Area 1263 Comment
  JEPS124373  Castilleja tenuis Lowell Ahart, John Dittes 2015-7-13 20314 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS96025  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1996-6-24 7841 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  RSA0045639  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-22 15027 Lassen About 20 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
  UC1137685  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen Forest 1743 Comment
  UCD164167  Caulanthus major N. Ivalu Cacho; Sharon Y. Strauss, Bryan T. Drew 2010-7-5 IC-SS 131 - Lassen Fredoyner Peak; on rocky outcrop on summit. 2393 Comment
  UC1477727  Caulanthus major var. nevadensis Teresa Prendusi 1980-7-21 30 Lassen Fredonyer Peak 2377 Comment
  POM85246  Ceanothus cordulatus Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CAS-BOT-BC52048  Ceanothus prostratus John Thomas Howell 1976-7-19 51982 Lassen on Gold Run Creek Southwest of Susanville 1386 Comment
  CAS-BOT-BC52052  Ceanothus prostratus Milo S. Baker 1894-7-30 s.n. Lassen Near Silver Lake Comment
  HSC75914  Ceanothus prostratus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19248 Lassen 3 mi. N of Westwood Comment
  UC727092  Ceanothus prostratus A. A. Heller 1941-6-26 16230 Lassen on roadside banks on the ridge w Nieubieber; w of Nieubierber Comment
  CAS-BOT-BC52440  Ceanothus velutinus var. velutinus Brighton C. Cain 1925-8-24 115 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  RSA747546  Ceanothus velutinus var. velutinus K. M. Meyer, A. Townesmith 2007-7-23 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  SEINET10690337  Ceanothus velutinus var. velutinus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CDA7222  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  CDA7345  Centaurea squarrosa Loring White 1950-8-9 Lassen Cramer Ranch. Big Valley 0 Comment
  CHSC71853  Centaurea squarrosa Vernon H. Oswald; Lowell Ahart 1998-9-8 9586 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  RSA186838  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville Comment
  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
  JEPS84967  Centaurium exaltatum Barbara Ertter 1987-7-24 7305 Lassen ca 0.75 mi ene Beckwourth Pass (at the end of old crumbling paved road) 1524 Comment
  CHSC77196  Centromadia pungens G. Schoolcraft 1998-6-22 Lassen Flats of Shaffer Mtn. along Secret. 1341 Comment
  CAS-BOT-BC400184  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek 1560 Comment
  CAS-BOT-BC143810  Cercocarpus ledifolius var. ledifolius A. G. Brenneis 1928-5-28 3 Lassen 1/2 mi. East of Willow Springs, Lassen National Forest 1371 Comment
  CHSC12418  Cercocarpus ledifolius var. ledifolius Anne Linda Brisk 1969-6-19 5 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC61997  Cercocarpus ledifolius var. ledifolius Brian Murray 1994-6-4 20 Lassen 0.8 miles North of the A21 turnoff on road A1. 50 ft. from the ice cave. 1554 Comment
  CHSC6241  Cercocarpus ledifolius var. ledifolius W. Vinyard 1946-6-17 Lassen Specimen with flowers from summit Mt. Fredonyer. 2421 Comment
  UC764012  Cercocarpus ledifolius var. ledifolius R. F. Hoover 1940-9-21 4604 Lassen 4 mi w of Susanville Comment
  UC773879  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  RSA637572  Chaenactis douglasii Michael A. Vincent 1999-6-9 8582 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CAS-BOT-BC276618  Chaenactis douglasii var. douglasii John Thomas Howell 1934-7-8 12497 Lassen Spalding's Eagle Lake Comment
  CAS-BOT-BC276620  Chaenactis douglasii var. douglasii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50674 Lassen Summit ridge of Diamond Mountain 2346 Comment
  CHSC23518  Chaenactis douglasii var. douglasii Wayne O. Baum 1971-7-6 71 -50 Lassen Slope of Gallatin Peak. 2011 Comment
  CHSC48134  Chaenactis douglasii var. douglasii Vernon Oswald 1986-6-15 2116 Lassen Hwy 139, 8.6 mi ne of Susanville. 1615 Comment
  CHSC75451  Chaenactis douglasii var. douglasii Vernon H. Oswald 1999-6-9 9741 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
  HSC28855  Chaenactis douglasii var. douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19288 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CDA10717  Chaenactis glabriuscula var. megacephala T. C. Fuller 1963-6-1 10628 Lassen East side of road to Hall s Flat, 4.9 miles south of Pittville. 0 Comment
  RSA30268  Chaenactis xantiana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  POM451345  Chamaebatiaria millefolium J. T. Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  SBBG72342  Chamaebatiaria millefolium S. W. Hutchinson -Jun-1925 949 Lassen Eagle Lake 1554 Comment
  UC526157  Chamaebatiaria millefolium John Thomas Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  SEINET11908036  Chamaebatiaria millefolium Unknown 1973-1 11 Lassen approx. 50 m W from entrance to Chico State Biological Field Station on E side of Eagle Lake Comment
  CHSC60898  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1993-7-8 5660 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Between the railroad and the lake. 1709 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
  UC1483846  Chimaphila menziesii G. Schoolcraft 1980-7-29 344 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  UC149174  Chorizanthe watsonii T. S. Brandegee Lassen Honey Lake Comment
  CHSC23506  Chrysolepis sempervirens Wayne O. Baum 1971-7-8 71 -64 Lassen E. slope of Gallatin Peak. 1920 Comment
  CAS-BOT-BC140659  Chrysothamnus humilis John Thomas Howell 1974-7-9 50485 Lassen SW of Wildcat Point, Eagle Lake 1554 Comment
  CHSC78477  Chrysothamnus humilis Beth Corbin 2000-7-24 979 Lassen Northeast of Poison Lake, just east of the Pittville Highway. 1705 Comment
  SJSU3013  Chrysothamnus viscidiflorus J. W. Tilden 1967-8-23 1772 Lassen Litchfield, southeastern Lassen County 1402 Comment
  CAS-BOT-BC106024  Chrysothamnus viscidiflorus subsp. lanceolatus Ynez Whilton Winblad 1935-9-23 s.n. Lassen Susanville Comment
  CHSC66850  Chrysothamnus viscidiflorus subsp. lanceolatus Vernon H. Oswald 1996-9-21 8287 Lassen Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. Levee, along the S edge of Willow Creek ca. 1 mi E of the parking area on the highway. 1490 Comment
  CHSC71854  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald; Lowell Ahart 1998-9-8 9587 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  JEPS97319  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald and L. Ahart 1995-8-14 7183 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Shrub to ca. 5 dm tall growing at roadside. Leaves spirally twisted. 1645 Comment
  SEINET5727104 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7713 Lassen Collected along Forest Road 37N11, off CA Hwy 139.; Modoc National Forest 1555 Comment
  UC747217  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Thomas Robbins 1945-10-7 2154 Lassen 2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  SEINET218720  Cirsium acaulescens J. M. Gillett, A. G. Moulds 1964-6-9 12640 Lassen Westwood. Meadow along stream. Comment
  SD61012  Cirsium andersonii Darley F. Howe 1964-8-1 3911 Lassen 3.3 miles on ridge road above Harvey Creek, Warner Mountains; Modoc National Forest. 1950 Comment
  CAS-BOT-BC278008  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8307 Lassen Willow Creek near Hayden Hill Comment
  CDA1169  Cirsium cymosum T. C. Fuller 1963-7-16 10921 -A Lassen West of Hwy 395; 14.3 miles south of Ravendale. 0 Comment
  CAS-BOT-BC278011  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen 7 mi N/road to Karlo Comment
  UC1136775  Cirsium cymosum var. cymosum L. R. Short and Wm. Gansberg 1936-7-9 S- 479 Lassen Burgess Spr. Exp. Range Lassen Forest 1807 Comment
  UC1776701  Cirsium cymosum var. cymosum G. Schoolcraft 1998-6-23 2738 Lassen Along Ramhorn Road 1.5 miles N of campground 1676 Comment
  RSA0070618  Cirsium douglasii var. breweri F. W. Peirson 1926-6-22 6824 Lassen Near Hot Springs, Drakesbad, Mount Lassen National Park. 1677 Comment
  JEPS59279  Cirsium occidentale var. californicum W. L. Jepson 1918-8-4 7807 Lassen Horse Lake 1554 Comment
  CDA1489  Cirsium ochrocentrum Lee Wheeler 1959-7-23 s.n. Lassen Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.) Comment
  CDA1492  Cirsium ochrocentrum G. D. Barbe 1982-7-13 3880 Lassen Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd. 0 Comment
  CDA1529  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14200 Lassen Madeline Plains E base of Dry Valley Ridge, 10 mi. W of Termo, 3 mi N of Termo-Grasshopper Rd. Comment
  CAS-BOT-BC280429  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14199 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CAS-BOT-BC286306  Cirsium scariosum John Thomas Howell 1976-7-20 52025 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC286307  Cirsium scariosum John Thomas Howell 1976-7-20 52025 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CHSC5203  Cirsium scariosum P. Balch 1955-7-19 Lassen Eagle Lake. Roadside meadow 3 1/2 mi from Antelope Lookout. 1981 Comment
  RSA504590  Cirsium scariosum Bruce Bartholomew 1988-6-25 4370 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  RSA186831  Cirsium undulatum T. C. Fuller 1966-7-22 14981 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
  RSA286400  Cirsium undulatum T. C. Fuller 1980-8-5 20311 Lassen North side of road to campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale Comment
  CAS-BOT-BC285731  Cirsium vulgare Margaret Williams 1974-7-27 74 -L-63 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC162636  Clarkia John Thomas Howell 1974-7-30 s.n. Lassen Diamond Mountain - Sierra Nevada 2286 Comment
  CHSC64881  Clarkia gracilis subsp. gracilis Vernon H. Oswald 1995-6-26 6916 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  UC1924236  Clarkia lassenensis Debra Valov 2004-6-9 2004256 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1270 Comment
  CAS-BOT-BC172562  Clarkia purpurea subsp. purpurea John Thomas Howell 1974-7-10 50550 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  JEPS90014  Clarkia purpurea subsp. quadrivulnera Dean Wm. Taylor with Robert A. Price 1988-6-4 9770 Lassen 6 mi e of MacArthur (Fall River Valley along Highway 299 at crossing of Frazer Creek, Pit River Watershed); Fall River Valley, Highway 299 1036 Comment
  CAS-BOT-BC164864  Clarkia rhomboidea A. M. Vollmer; L. Beane 1953-7-1 35 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC59759  Clarkia rhomboidea Mary Meyer 1980-8-5 Lassen 2148 Comment
  JEPS43672  Clarkia rhomboidea Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  CHSC29927  Clarkia stellata Robin L. Ondricek 1978-6-14 57 Lassen 1.8 mi E of Coleman Rd. on Lassen Co. Rd. A1. 1950 Comment
  SEINET5336402  Claytonia perfoliata subsp. intermontana J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin CA. Comment
  CAS-BOT-BC440042  Claytonia perfoliata subsp. perfoliata Louella Bass 1973-4-23 25 Lassen Elysian Valley. 1325 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
  POM102012  Claytonia rubra subsp. rubra Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  JEPS17868  Cleome platycarpa Rimo Bacigalupi with G. T. Robbins 1955-7-21 5430 Lassen 8 mi e U.S. Hwy. 395 (along Smoke Creek Ranch road, se part of Secret Valley); Secret Valley 1402 Comment
  NY222742  Cleome platycarpa A. A. Heller 1938-6-23 15207 Lassen Ridge north of Mapes on U. S. Highway #395. Upper Sonoran Life Zone. 1371.6 Comment
  UC725411  Cleome platycarpa A. A. Heller 1938-6-23 15207 Lassen n of Mapes (on U.S. Highway 395) 1371 Comment
  SEINET3153948  Cleome platycarpa J. L. Strother 1970-5-23 951 Lassen About 6 miles N of Honey Lake, at ca. 4200 feet elevation. 1280 Comment
  UC83292  Cleomella parviflora Mrs. C. C. Bruce 2364 a Lassen Shumway Comment
Read comments
Dec 20 2007
  CAS-BOT-BC423225  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  CHSC100886  Cleomella plocasperma L. P. Janeway 2008-8-2 9530 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
  NY242362  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  RSA739646  Cleomella plocasperma L. P. Janeway, Linus Gog 2008-8-2 9530 Lassen Modoc Plateau just above th flats along the S side of Rusch Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  NY242239  Cleomella plocasperma N. H. Holmgren 1978-6-13 8938 Lassen 2.7 km (1.7 mi) northwest of Wendel. 1250 Comment
  CDA5730  Collinsia parviflora L. Ahart, J. Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. Comment
  CHSC112413  Collinsia parviflora Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18737 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS120877  Collinsia parviflora Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18737 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SBBG66419  Collinsia parviflora S. W. Hutchinson -Jun-1925 Lassen Eagle Lake 1554 Comment
  SEINET10548283  Collinsia parviflora Jeffrey Huber 1971-6-2 Huber 127 Lassen Approx 30 mi n of susanville, on calif hwy 139, in basalt, pinus artemesia Juniper assoc. 1646 Comment
  SEINET10548296  Collinsia parviflora Mary Susan Taylor 1974-5-4 Taylor 225 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
  UC2016544  Collinsia parviflora Richard Olmstead 1984-6-26 578 Lassen 3.5 miles east of junction of Forest Service Road and Red Rock Lookout Road (28N02), on Red Rock Lookout Road. Near small stream lined with alders. Comment
  SEINET10548304  Collinsia sparsiflora Mary Susan Taylor 1982-5-7 Taylor 4427 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 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
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  CHSC5005  Collomia tinctoria K. C. Newman 1967-7-2 59 Lassen Collected about 50 yds. NE of ELBS just beyond the men's dorm. 1554 Comment
  CHSC6199  Collomia tinctoria J. B. Kimsey 1946-6-13 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  RSA122984  Collomia tinctoria L. R. Short, J. Warren 1936-6-10 s- 382 Lassen Burgess Spr. Exp. Range 1790 Comment
  UC23854  Collomia tinctoria M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  CHSC96716  Comarum palustre Gordon Leppig; T. LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CDA3700  Conringia orientalis Agricultural Commissioner Jul 1948 Lassen Susanville. 0 Comment
  UC1924220  Convolvulus arvensis Debra Valov 2004-6-8 2004255 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  HSC23535  Convolvulus arvensis L. G. Bennett 1967-7-17 180 Lassen Murrers Meadow, near Eagle Lake 1494 Comment
  JEPS17409  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 m <e?> of Nevada line, 17.5 m w of US Hwy 395); drainage of Rush Creek Comment
  JEPS57534  Cordylanthus maritimus subsp. canescens Harry George 1963-8-15 Lassen shores of Honey Lake Comment
  CAS-BOT-BC383108  Cornus sericea subsp. sericea Andrew Townesmith; Karen M. Meyer 2007-7-20 839 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  CHSC77215  Corydalis caseana subsp. caseana G. Schoolcraft 1997-8-6 2657 Lassen Along w. fork of Gold Run Creek about 8 miles sw of Susanville. 1859 Comment
  CHSC117526  Crassula aquatica Lowell Ahart; John Dittes 2016-7-13 21117 Lassen Strand of the pond, near where drainage enters pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC290390  Crepis acuminata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49462 Lassen Elysian Valley, west of Janesville 1325 Comment
  RSA699966  Crepis acuminata L. P. Janeway 2001-6-20 7197 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1510 Comment
  RSA716340  Crepis acuminata L. Ahart, John Dittes 2005-6-2 11933 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  UC1136840  Crepis acuminata L. R. Short 1936-7-9 S- 509 Lassen Burgess Spr. Exp. Range Lassen National Forest 1818 Comment
  UCR18726  Crepis acuminata Frank C. Vasek 1975-7-11 750711- 12 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC291549  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-8 2222 Lassen Six miles south of Ravensdale 1676 Comment
  UC581246  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2298 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC581242  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2259 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville) 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
  UCD130973  Crepis occidentalis Grady L. Webster 1989-5-13 7722 Lassen 2.5 miles E of Beckworth Pass. 1493 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
  UC581276  Crepis occidentalis subsp. occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2320 Lassen w-facing slope about 1 mi below summit; Black Mt. 1940 Comment
  UC581289  Crepis occidentalis subsp. occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1748 Lassen nw-facing slope of ridge e Red Rock 1600 Comment
  JEPS117488  Crepis occidentalis subsp. pumila Lowell Ahart, John Dittes 2010-7-31 16982 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC290823  Crepis occidentalis subsp. pumila Elmer I. Applegate 1934-5-4 8915 Lassen South of Secret Valley Comment
  SEINET3158253  Cressa cretica M. E. Jones 1897-6-23 sn Lassen Amedee 1219 Comment
  CAS-BOT-BC299713  Crocidium Louella Bass 1973-4-22 23 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC60650  Crocidium multicaule Vernon H. Oswald; Lowell Ahart 1993-4-17 5275 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CHSC57350  Cryptantha K. R. Stern 1974-6-26 5860 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, ca. 1.8 mi nw of intersection with Hwy. 44. Comment
  RSA0059645  Cryptantha ambigua Richard R. Halse 2004-8-8 6616 Lassen Along State Highway 139 ca. 6 miles north of Eagle Lake. 1710 Comment
  SDSU20523  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 523 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  SDSU20524  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 524 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  CHSC106580  Cryptantha circumscissa C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC93236  Cryptantha circumscissa John Dittes; Scott Chamberlain 2004-6-28 1010 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  CHSC64870  Cryptantha intermedia Vernon H. Oswald; Lowell Ahart 1995-6-19 6878 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  JEPS97421  Cryptantha intermedia Vernon H. Oswald and L. Ahart 1995-6-19 6878 Lassen Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  UCD119960  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley. Comment
  UC526165  Cryptantha pterocarya John Thomas Howell 1934-6-10 11851 Lassen 4 mi s Omira Comment
  CHSC68850  Cryptantha simulans Vernon Oswald; Lowell Ahart 1997-6-24 8594 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  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
  POM72228  Cryptantha torreyana Marcus E. Jones 1897-6-19 6862 Lassen Chat 1616 Comment
  UC1523762  Cusickiella douglasii Gary Schoolcraft 1982-7-20 809 Lassen e McKesick Pk; e of McKesick Pk 2072 Comment
  CAS-BOT-BC70564  Cystopteris fragilis Louella Bass 1973-6-18 EU- 126 Lassen Elysian Valley 1325 Comment
  CHSC117185  Cystopteris fragilis Lowell Ahart; John Dittes 2016-6-7 21007 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UCR244032  Dactylis glomerata Jim Andre, G. L. Clifton 1993-6-3 19702 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  CAS-BOT-BC208394  Dalea ornata Arnold Tiehm; Raymond Evans; James Young 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest if Litchfield 1371 Comment
  RSA8224  Damasonium californicum Elmer I. Applegate 1929-6-24 5882 Lassen Near Bieber. Comment
  CAS-BOT-BC445514  Damasonium californicum 1927-7-15 72 Lassen Lassen National Forest. Feather Lake 1737 Comment
  UC1609259  Danthonia californica Vernon H. Oswald and Lowell Ahart 1993-8-3 5755 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  UCD61007  Danthonia californica var. americana L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  CAS-BOT-BC192327  Danthonia unispicata Parkison 1916-6-10 15 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  JEPS88200  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1996-6-17 7803 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UCD61076  Danthonia unispicata L. Whitney 1935-6-24 Lassen Ashurst Mt., N of Harvey Valley, ca. 35 mi. NW of Susanville. Comment
  UCD61297  Danthonia unispicata F. C. Raney 1966-6-25 Lassen Harvey Valley, Lassen National Forest. Comment
  CHSC71862  Deinandra lobbii Vernon H. Oswald; Lowell Ahart 1998-9-8 9573 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  UCD55273  Delphinium andersonii Ellen Dean 2006-5-15 3083 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  CAS-BOT-BC33220  Delphinium armeniacum Amos Arthur Heller 1938-6-4 15149 Lassen 1 mile E of Fredonyer Pass. 1706 Comment
  CHSC7728  Delphinium nudicaule Beverley J. Wise 1969-5-9 84 Lassen 11.3 mi. west of Susanville on Forest Serv. 8246 off Hwy 36. 1524 Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  CHSC7732  Delphinium nuttallianum Beverley J. Wise 1969-5-9 85 Lassen 11.7 mi. west of Susanville on Forest Serv. 8246 off Hwy. 36. 1524 Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  CHSC113927  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-8-20 19719 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
  POM114825  Deschampsia cespitosa subsp. cespitosa Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1142950  Deschampsia cespitosa subsp. cespitosa A. L. Hormay 1941-6-23 13 Lassen Burgess Spring Lassen Nt'l Forest, Burgess Spring 1676 Comment
  JEPS107688  Deschampsia danthonioides Lowell Ahart, John Dittes 2005-6-1 11913 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  RSA185317  Deschampsia danthonioides Clare B. Hardham 1961-6-17 s.n. Lassen Baxter Creek, south of Susanville 1677 Comment
  SACT000919  Deschampsia danthonioides Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  UC1024821  Deschampsia danthonioides Leo Whitney 1935-6-20 3251 Lassen Camp 10 Fruit Grower's Supply Company Fruit Grower's Supply Company; Lassen Nat'l Forest 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
  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
  CAS-BOT-BC43089  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. 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
  CAS-BOT-BC43163  Descurainia pinnata subsp. brachycarpa John Thomas Howell 1934-6-10 11902 Lassen 3 miles south of Ravendale. Comment
  CHSC7705  Descurainia sophia Beverley J. Wise 1969-5-23 39 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  JEPS107794  Descurainia sophia Lowell Ahart 2005-6-2 11925 A Lassen near the Anderson Ranch home, Long Valley, about 4 3/4 air mi N of intersection of Scott Road and Hwy 70, 6.2 air mi NW of Hallelujah Junction 1459 Comment
  RSA0035397  Descurainia sophia Lowell Ahart, John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1924260  Descurainia sophia Debra Valov 2004-5-31 2004227 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD114789  Descurainia sophia R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  SD8289  Dicentra formosa Mrs. R. M. Austin Aug 1882 Lassen Comment
  JEPS25534  Dichelostemma multiflorum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7148 Lassen 3.7 mi s Susanville to Adin road junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  POM109921  Dichelostemma multiflorum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin s Ranch. 1463 Comment
  CAS-BOT-BC292259  Dieteria canescens John Thomas Howell 1974-7-8 50470 Lassen Susanville 1295 Comment
  UC223695  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Money Lake Valley Comment
  UC506907  Dieteria canescens var. shastensis George A. Fischer and Irwin H. Johnson 1933-7-14 F- 268 Lassen Lassen Forest 1752 Comment
  CAS-BOT-BC153671  Diplacus mephiticus G. Schoolcraft 1989-6-17 1909 Lassen Northwest slope of Shaffer Mtn. Comment
  CHSC13945  Diplacus mephiticus M. S. Taylor 1974-7-6 311 Lassen On Gallatin Peak overlooking Gallatin Beach, ca. 13 mi nw of Susanville. Comment
  CHSC26185  Diplacus mephiticus J. P. Kroessig 1977-5-23 28 Lassen Small scattered population at Eagle Lake Biological Station (CSUC), ca 37 km nnw of Susanville. 478 Comment
  CHSC9543  Diplacus mephiticus A. W. Harvilik 1967-6-24 36 Lassen Collected near the gas pump at Eagle Lake Biological Station. 1554 Comment
  SBBG22269  Diplacus mephiticus C. B. Hardham 1961-6-16 Lassen Gold Run Crk, S of Susanville Comment
  SEINET201637 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8464 Lassen 50 mi SE of Susanville Comment
  CAS-BOT-BC151431  Diplacus nanus A. M. Vollmer; L. Beane 1953-7-1 104 Lassen Along Halls Flat Road, beginning 6 miles wet of Susanville to McArthur 1554 Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  UC1137728  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1767 Comment
  UC1951077  Dodecatheon conjugens Debra Valov 2009-4-25 2009014 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC773868  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  CHSC60825  Downingia bacigalupii Vernon H. Oswald; Lowell Ahart 1993-6-28 5612 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  RSA436116  Downingia bacigalupii Rockwell 1925-7-1 s.n. Lassen Eagle Lake 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
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  CHSC30606  Downingia bicornuta T. M. Lane 1975-6-23 28 Lassen 50 m n of spring headwaters of Willow Cr; 3.2 km ese of Eagle Lake Field Station; 22.4 km n of Susanville. 1589 Comment
  RSA28137  Downingia bicornuta Elmer I. Applegate 1929-6-24 5883 Lassen Pond just north of Beiber, NW corner of county. Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  POM260453  Downingia bicornuta C. L. Hitchcock 1940-5-26 6645 Lassen Overflow of Pitt River, 1 mile W of Bieber. Comment
  CHSC99106  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
  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
  UC1609203  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen 1.9 mi n Highway 44 (Pittville Rd (Lassen 111, 36N01), se edge of Poison Lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  UC28984  Downingia bicornuta var. bicornuta J. Burtt Davy Jun 17 1897-Jun 24 1897 3348 Lassen Honey Lake Valley Comment
  JEPS108510  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-28 232 -95 Lassen Between Beiber and Adin; SE corner of Rt. 299 and Finley Rd. Comment
  UCD58787  Downingia elegans Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  HSC69067  Downingia insignis Gary Schoolcraft 1980-7-16 317 Lassen N end of Nelson Corral Reservoir area. 1805 Comment
  JEPS3751  Downingia insignis Helen-Mar Wheeler 1952-7-11 Lassen s of Madeline Comment
  JEPS97322  Downingia insignis Vernon H. Oswald and L. Ahart 1995-8-14 7184 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  RSA293375  Downingia insignis Reino Alava 1957-7-5 1144 Lassen Along Highway 395, 10 miles N of Madeline. Comment
  SEINET12329647  Downingia insignis N. H. Holmgren, Holmgren, P. K. 1980-1 9482 Lassen U.S. Highway 395, 7.4 km (4.6 mi.) S of Ravendale, T33N, R15E, S6 1620 Comment
  JEPS24763  Downingia laeta John H. Weiler, L. Constance, E. Molseed 1960-6-13 60164 Lassen 1.7 mi. s. Ravendale (w. side of U.S. 395) 1615 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
  RSA39757  Downingia laeta P. A. Munz 1947-5-20 11892 Lassen Milford 1265 Comment
  SEINET8039620  Downingia laeta G. Schoolcraft 1995-6-6 2493 Lassen Laver Spring. 1585 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
  CHSC508  Draba verna J. Wakeman 1963-5-11 Lassen 6 mi. east of Bieber on hiway 299. Comment
  CHSC96701  Drosera anglica Gordon Leppig; J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. Peatland i ... Field redacted by CHSC, contact the data manager for more information 1970 Comment
  CAS-BOT-BC159715  Drymocallis glandulosa Louella Bass 1977-6-26 77 -5 Lassen Elysian Valley, south of Superdam. 1325 Comment
  CAS-BOT-BC159342  Drymocallis lactea var. lactea Louella Bass 1973-6-14 106 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CHSC71071  Eatonella nivea Vernon H. Oswald; Lowell Ahart 1998-5-22 9122 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., 5 mi NE of Doyle. 1463 Comment
  JEPS95911  Elaeagnus angustifolia Lowell Ahart 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
  CHSC116194  Elatine Lowell Ahart; John Dittes 2015-7-13 20294 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
  RSA233772  Elatine R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39134 a Lassen Said Valley Reservoir Comment
  CHSC60896  Elatine californica Vernon H. Oswald; Lowell Ahart 1993-7-8 5646 Lassen Pittville Rd (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 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
  RSA0080121  Elatine californica Lowell Ahart, John Dittes 2100-06-21 17527 Lassen Between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC29940  Elatine rubella Robin L. Ondricek 1978-7-5 93 Lassen At the edge of Mahogany Lake at the ne end. 2057 Comment
  UC1776676  Eleocharis quinqueflora G. Schoolcraft 1995-5-23 2488 Lassen Three Springs 1554 Comment
  UCD150399  Elodea canadensis William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  POM313177  Elodea nuttallii H. L. Mason, Verne Grant 1947-7-9 13292 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  UC1031373  Elymus X saundersii Leo Whitney 1935-7-31 3588 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  CHSC112467  Elymus caput-medusae Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18749 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
  JEPS120873  Elymus caput-medusae Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18749 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SD71040  Elymus caput-medusae Leo E. Wheeler 1960-6-15 Lassen edge of valley plain, ca. 4 mi. se. of Susanville Comment
  HSC5270  Elymus cinereus M. T. Milligan 1964-8-6 197 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS123868  Elymus cinereus Lowell Ahart, John Dittes 2015-7-14 20327 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC227483  Elymus elymoides Margaret Williams; Steven Williams 1974-7-26 74 -L-42 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC227490  Elymus elymoides Gary Schoolcraft 1983-6-29 1053 Lassen Ash Valley 1554 Comment
  JEPS128418  Elymus elymoides Jennifer Mueller 2017-7-18 CA 320 -193 Lassen Near Long Springs on Cold Springs Mountain. 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
  CHSC30616  Elymus elymoides subsp. elymoides M. A. Dubin 1975-7-20 10 Lassen Eagle Lake Field Station, 200 yards north of classroom. 1569 Comment
  CHSC5256  Elymus elymoides subsp. elymoides P. Balch 1955-7-23 Lassen Stafford's Eagle Lake Resort. 1569 Comment
  CHSC6320  Elymus elymoides subsp. elymoides Nick Santamaria 1968-6-29 16 Lassen On the ELBS grounds. Comment
  UC1133007  Elymus elymoides subsp. elymoides H. P. Hagge 1929-9-11 23 Lassen Logan Mtn. Lassen National Forest, Eagle Lake Quadrangle Comment
  UC1133050  Elymus elymoides subsp. elymoides A. Simontacchi 1940-6-13 858 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC506990  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC773975  Elymus elymoides subsp. elymoides L. R. Short and Wm. Gansberg 1936-7-9 S- 477 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1783 Comment
  JEPS126479  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-30 CA 350 -043 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  JEPS126496  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-12 CA 350 -74 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  UCD62368  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen On Gold Run Creek southwest of Susanville. 1386 Comment
  CHSC112797  Elymus repens Lowell Ahart; John Dittes 2013-7-23 18894 Lassen About 20 feet southwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD62565  Elymus repens J. V. Langdon 1957-7-1 Lassen Susanville. Comment
  JEPS119960  Elymus trachycaulus Lowell Ahart, John Dittes 2012-7-9 18297 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC506972  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 230 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  UC60832  Elymus trachycaulus M. S. Baker and Frank Nutting 1894-7-5 Lassen mts. s Dixey Valley Comment
  CHSC112048  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2012-7-9 18297 Lassen On dry soil, on the south side of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1220396  Elytrigia elongata T. C. Fuller 1963-7-15 10887 Lassen 2.9 mi se Pittville (s of road to Little Valley) Comment
  CDA2066  Elytrigia repens H. S. Milton, P. Milton Jul 1980 Lassen Herman S. & Paul Milton Ranch, Riverside District, Hwy 395, 8 miles east of Susanville. 0 Comment
  CHSC71123  Ephedra viridis Vernon H. Oswald; Lowell Ahart 1998-5-22 9103 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  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
  RSA252401  Epilobium brachycarpum Robert F. Thorne, C. W. Tilforth 1969-9-6 39263 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  SEINET12539665  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  JEPS119650  Epilobium campestre Lowell Ahart, John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC113008  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes 2013-7-22 18856 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
  HSC95173  Epilobium ciliatum subsp. ciliatum Gordon Leppig, J. Cromwell 1997-7-27 617 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95335  Epilobium ciliatum subsp. ciliatum Gordon Leppig 1998-8-17 1054 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC118481  Epilobium ciliatum subsp. ciliatum Don Lepley 2015-6-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Southwest corner of Eagle Lake, roughly a half-mile northeast of entrance to Christie Campground, close to current lakeshore. UTM 683603 x 4493237 1559 Comment
  JEPS114690  Epilobium ciliatum subsp. glandulosum Lowell Ahart, John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC1567379  Epilobium densiflorum G. Schoolcraft 1989-7-18 1984 Lassen s Clark's Valley Rd. (near Box Spring) 1813 Comment
  UC1924202  Epilobium densiflorum Debra Valov 2005-8-20 2005223 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC59090  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5183 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Bottom of a cutbank of the creek where it enters the lake. 1853 Comment
  CHSC30611  Epilobium hallianum G. A. Brown 1975-7-7 1 Lassen Gallatin Peak, western slope. 1990 Comment
  UC1924229  Epilobium hallianum Debra Valov 2005-8-19 2005218 Lassen Eagle Lake; Hwy 139, Mi. marker 25 1554 Comment
  CHSC77220  Epilobium oregonense G. Schoolcraft 1993-7-20 2330 Lassen About 1 mile s. of Boot Lake. Along creek. 1950 Comment
  HSC95302  Epilobium oregonense Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 527 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS87408  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  SJSU10675  Epilobium oregonense J. W. Tilden 1960-6-27 1517 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  CAS-BOT-BC57302  Equisetum laevigatum John Thomas Howell 1975-7-23 51386 Lassen Susanville 1295 Comment
  CAS-BOT-BC57304  Equisetum laevigatum John Thomas Howell 1973-7-10 49771 Lassen near Westwood 1554 Comment
  JEPS114954  Equisetum laevigatum Lowell Ahart, John Dittes 2008-6-20 14933 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
  JEPS88087  Equisetum laevigatum Vernon H. Oswald and Lowell Ahart 1996-6-17 7820 Lassen ca. 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, at 6 mi post of Devil's Corral Trailhead); Modoc Palteau 1420 Comment
  CHSC71896  Eragrostis pectinacea var. pectinacea Vernon H. Oswald; Lowell Ahart 1998-9-8 9578 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Near the highway. 1255 Comment
  CHSC89740  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8141 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
  CHSC66382  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1996-6-17 7798 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  SEINET12875575 Image available Eremogone congesta var. subcongesta John Thomas Howell 1977-1 52401 Lassen North end of Eagle Lake 1585 Comment
  CAS-BOT-BC160000  Eremothera boothii subsp. alyssoides Elmer I. Applegate 1934-5-4 8918 Lassen Secret Valley Comment
  SEINET4132785  Eremothera boothii subsp. alyssoides A. Tiehm 1980-1 5754 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  CHSC5079  Eriastrum signatum A. W. Harvilik 1967-6-30 35 Lassen Collected near junction of rd. 5.19 and rd to Murrer's Meadow. 1524 Comment
  RSA0124147  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau just above the flats along the S side of Rush Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  CAS-BOT-BC515173  Eriastrum signatum Gary Schoolcraft 1982-6-22 720 Lassen Ft. Sage Mtns. 1463 Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  SEINET7356288  Eriastrum sparsiflorum Richard R. Halse 2004-7-21 6669 Lassen At junction of U.S. Hwy 395 and State Road A 26, ca 11 miles southeast of Milford.; 0 1274 Comment
  JEPS116872  Eriastrum sparsiflorum David Gowen 2007-7-12 784 Lassen Just off Hwy 395 south of Constantia at road crossing Long Valley Creek. Comment
  CAS-BOT-BC286604  Ericameria bloomeri R. K. Gierisch; D. H. Esplin 1969-8-27 3598 Lassen Lassen National Forest Comment
  HSC69070  Ericameria bloomeri Gary Schoolcraft 1979-8-15 176 Lassen Tule Mtn. Area 2043 Comment
  RSA79228  Ericameria bloomeri E. K. Balls, Percy C. Everett 1952-10-9 18134 Lassen About Plumas-Lassen county line, Hwy. 89, east of Lake Almanor. 1220 Comment
Read comments
Jul 1 2013
  SEINET195495  Ericameria bloomeri G. Thomas Robbins 1945-10-7 2153 Lassen Lassen National Forest ; Southeast slope of Harvey Mountain 2-3 miles northeast of Burgess Spring Harvey Valley 1829 Comment
  UC1136849  Ericameria bloomeri L. R. Short and J. Warren 1936-8-17 S- 497 Lassen Burgess Spr. Exp. Range Lassen Forest 1767 Comment
  CHSC12490  Ericameria nauseosa Carol Weld 1969-6-19 59 Lassen Ca 150 yd N.W. of Eagle Lake Field Station. 1554 Comment
  CAS-BOT-BC298178  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298181  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 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
  CAS-BOT-BC294184  Ericameria nauseosa var. speciosa Louella Bass 1973-9-4 EV 133 Lassen Elysian Valley 1325 Comment
  JEPS21518  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UC761818  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-27 4628 Lassen Susanville Comment
  UC1776655  Ericameria parryi var. nevadensis G. Schoolcraft 1998-8-19 2803 Lassen N upper slope of Shaffer Mountain 1981 Comment
  SEINET10721387  Erigeron Paul Gallian, David B. Dunn 1971-6-2 Gallian 462 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
  RSA121426  Erigeron aphanactis E. Sawyer 1935-6-27 238 Lassen Long Valley 1341 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
  CHSC29923  Erigeron bloomeri Robin Ondricek 1978-6-6 35 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1584 Comment
  JEPS41560  Erigeron bloomeri Franklin P. Nutting Lassen Dixey Valley Comment
  CAS-BOT-BC294488  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-7-8 12513 Lassen Harvey Valley Comment
  CAS-BOT-BC294491  Erigeron bloomeri var. bloomeri Doris Kildale Gillespie 1930-5-13 9364 Lassen Between Susanville and Janesville Comment
  CHSC48146  Erigeron bloomeri var. bloomeri Vernon Oswald 1986-6-15 2115 Lassen Road between Hwy 139 and Eagle Lake Biological Station, near Black Mtn. 1584 Comment
  CHSC68733  Erigeron bloomeri var. bloomeri Vernon H. Oswald; Lowell Ahart 1997-5-27 8486 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
  CHSC87122  Erigeron bloomeri var. bloomeri L. P. Janeway 2001-6-20 7198 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
  OBI76959  Erigeron bloomeri var. bloomeri Anthony Baniaga 2011-7-6 421 Lassen Lassen Natl Forest. Near intersection of 29N02Y and the "B" spur. Fredonyer Pass quad. T29N r10E sec 23 SW of SW 1640 Comment
  UC506989  Erigeron bloomeri var. bloomeri George A. Fischer and Irwin H. Johnson 1933-7-12 F 217 Lassen Lassen National Forest 1722 Comment
  JEPS117585  Erigeron divergens Lowell Ahart, John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1924238  Erigeron divergens Debra Valov 2004-6-8 2004246 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  RSA339143  Erigeron divergens Margaret J. Williams 1984-6-16 84- 31 -1 Lassen Doyle Grade, County Hwy. 331, 2.6 miles W of Doyle. Comment
  CHSC68734  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1997-5-27 8520 Lassen North of Susanville of Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.3 mi northeast of Hwy. 139. 1725 Comment
  CHSC89752  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  SBBG8127  Erigeron eatonii var. plantagineus H. and M. Dearing 1938-6-30 2233 Lassen N of Susanville [Hwy 44] Comment
  UC1587058  Erigeron eatonii var. plantagineus G. Schoolcraft 1991-6-18 2162 Lassen along Hwy 139 4 mi w Said Valley Res. 1706 Comment
  UCD131889  Erigeron eatonii var. plantagineus Jack Major 1966-6-24 s.n. Lassen Long Valley, 3 miles airline southwest of Patterson Guard Station, northeastern county. 2087 Comment
  POM32996  Erigeron filifolius Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  HSC63942  Erigeron filifolius Teresa Prendusi 1980-7-10 Lassen Little Fredonyer, NW end of Horse Lake 1677 Comment
  CHSC105240  Erigeron filifolius var. filifolius Lowell Ahart; John Dittes 2010-7-31 17008 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC80592  Erigeron filifolius var. filifolius Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10035 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  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-BC295180  Erigeron inornatus Clarence R. Quick 1964-8-5 64 -97 Lassen Cal Mt. east of Poison Lake 1767 Comment
  OBI76966  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen Natl Forest.N of 30N61, W of A21. Swain Mtn quad. T30N R8E sec 26 NW of SW 1728 Comment
  UC2027204  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen National Forest. N of 30N61, W of A21. Swain Mountain quadrangle Comment
  UC31511  Erigeron linearis Mrs. C. C. Bruce 1898-6-1 2182 x Lassen Madeline plains Madeline Comment
  UC584272  Erigeron linearis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2265 Lassen bare summit ridge and ridges sw Diamond Mt. (Plumas and Lassen Cos. boundary, s of Susanville) 2164 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
  JEPS107464  Erigeron pumilus var. intermedius Lowell Ahart, John Dittes 2005-6-1 11853 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS57071  Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-14 7995 Lassen e side, Madeline Plains, at base of foothills Madeline Plains 1615 Comment
  RSA79264  Eriogonum baileyi var. baileyi E. K. Balls, Percy C. Everett 1952-10-10 18139 Lassen 5.5 miles NE of Litchfield, Hwy 395, between Susanville and Alturas 1280 Comment
  CHSC25303  Eriogonum caespitosum Pauleen Broyles 1977-5-30 150 Lassen Lava flow ca 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Creek Road, ca 8 km ne of Herlong. 1660 Comment
  NY242909  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen Between Secret Valley and Ravendale. U.S. Highway #395. 1524.0 Comment
  CAS-BOT-BC241833  Eriogonum caespitosum Elmer I. Applegate 1897-6-3 894 Lassen South of Madeline Plains Comment
  JEPS19795  Eriogonum collinum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6009 Lassen ne along US Highway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  NY242502  Eriogonum collinum G. Schoolcraft 1983-6-28 1021 Lassen East side of Mud Flat. 31-15-26 1341.1 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
  POM105835  Eriogonum collinum R. M. Austin 1883-09 s.n. Lassen Madaline Plains Comment
  RSA509426  Eriogonum douglasii G. R. Ballmer 1988-7-19 s.n. Lassen Warner Mountains, vicinity of Blue Lake 1738 Comment
  CHSC23494  Eriogonum douglasii var. meridionale K. R. Stern 1974-6-26 5866 Lassen E end of Champs Flat. Comment
  SEINET10479490  Eriogonum elatum Taylor 1982-8-27 Taylor 5055 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  RSA176182  Eriogonum maculatum Noel Holmgren, James L. Reveal 1964-8-22 1724 Lassen 35 miles mortheast of Susanville, 18 miles south of Ravendale along U.S. 395 Comment
  CAS-BOT-BC267345  Eriogonum marifolium var. marifolium John Thomas Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  CHSC84392  Eriogonum microthecum var. ambiguum Lowell Ahart 2003-8-17 10518 Lassen Small drainage, about 100 yards west of the cattle guard, on the southeast side of Smoke Creek Ranch Road, about 8-9 miles (air) northeast of Highway 395, about 30 miles (air) northeast of Susanville. 1450 Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  NY283744  Eriogonum nidularium R. F. Hoover 1940-9-29 4643 Lassen Pass between Shaffer Mountain and Warren Peak. Comment
  SD132453  Eriogonum nudum G. Helmkamp 1990-9-23 G 11 Lassen Sagebrush scrub area N of Ravendale. Riparian area beside small creek 1676 Comment
  CAS-BOT-BC261445  Eriogonum nudum var. nudum Clare B. Hardham 1969-8-28 17442 Lassen West of Janesville 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
  RSA518563  Eriogonum nudum var. nudum George K. Helmkamp 1990-9-23 G- 11 Lassen N of Ravendale 1677 Comment
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. 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
  CHSC87119  Eriogonum nudum var. pubiflorum L. P. Janeway 2001-6-20 7204 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  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
  SEINET14417488  Eriogonum nudum var. pubiflorum Robert L. Johnson, Mikel R. Stevens 2015-1 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
  UC1542949  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1759 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  UC1542952  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-9-9 1778 Lassen 3 mi n Bieber; Ash Creek Wildlife Area 1258 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
  HSC68914  Eriogonum nudum var. pubiflorum Gary Schoolcraft 1979-7-3 117 Lassen 1.0 mi. NW of rest area on Hwy. 395 1570 Comment
  SEINET5330981  Eriogonum nummulare A. Tiehm 1978-1 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan. About 1.7 miles W of the Nevada line 1524 Comment
  UCR259107  Eriogonum nummulare John F. Emmel 1993-7-29 1284 Lassen Southeast Honey Lake Valley, 4.1 air miles west and 1.3 air miles south of Calneva railroad stop, c. 2 air miles north of peak of Turtle Mountain 1256 Comment
  RSA0039349  Eriogonum nummulare John F. Emmel 1993-7-29 1284 Lassen Southeast Honey Lake Valley; 4.1 air miles west and 1.3 air miles south of Calneva railroad stop, ca. 2 air miles north of peak of Turtle Mountain. 1255 Comment
  SBBG65173  Eriogonum ovalifolium S. W. Hutchinson -Jun-1925 Lassen Eagle Lake to Caribou Lake 1828 Comment
  NY282047  Eriogonum ovalifolium var. nevadense G. Schoolcraft 1982-6-28 738 Lassen Ft. Sage Mtns. 762.0 Comment
  CHSC12966  Eriogonum ovalifolium var. nivale K. R. Stern 1974-6-26 5864 Lassen Ca. 3 mi nw of intersection of Pittville Rd. with Hwy. 44, ca. 200 yds. ne of Poison Lake. 1700 Comment
  JEPS87369  Eriogonum ovalifolium var. nivale Vernon H. Oswald and Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd.(33N02) 1.7 mi n Hwy 44 (e of Poison Lake, e side of Grays Valley); Grays Valley 1719 Comment
  CAS-BOT-BC258739  Eriogonum ovalifolium var. ovalifolium John Thomas Howell 1934-7-7 12469 Lassen Pine Creek Flat Comment
  CHSC64886  Eriogonum ovalifolium var. ovalifolium Vernon H. Oswald; Lowell Ahart 1995-6-19 6889 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. On a slope on the s side of the road at Mud Flat. 1350 Comment
  HSC30039  Eriogonum spergulinum var. reddingianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19162 Lassen 3 mi. N of Westwood Comment
  JEPS94560  Eriogonum spergulinum var. reddingianum Vernon Oswald and Lowell Ahart 1997-6-24 8596 Lassen s of Susanville (on the n side of Diamond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1685 Comment
  UC303059  Eriogonum spergulinum var. reddingianum Pearl Safford Lassen Susanville [uncertain locality] Comment
  NY283094  Eriogonum sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen South of Secret Valley on U.S. Highway 395. Upper Sonoran Life Zone. 1371.6 Comment
  CHSC25314  Eriogonum sphaerocephalum var. halimioides Pauleen Broyles 1977-6-1 165 Lassen Spencer Basin, 8 km n of Herlong. 1770 Comment
  JEPS94611  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald and Lowell Ahart 1997-5-27 8491 Lassen e side of Hwy 139 at small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  UC1924212  Eriogonum sphaerocephalum var. halimioides Debra Valov 2004-6-9 2004271 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC412796  Eriogonum sphaerocephalum var. halimioides Franklin P. Nutting Lassen near Lookout; Big Valley Comment
  CAS-BOT-BC262735  Eriogonum sphaerocephalum var. sphaerocephalum Alice Eastwood; John Thomas Howell 1940-6-16 8342 Lassen Janesville Comment
  CHSC25087  Eriogonum sphaerocephalum var. sphaerocephalum K. R. Stern 1967-7-1 2456 Lassen Ca. 16 mi. NE of Susanville. State Hwy 139. Comment
  SEINET11261384  Eriogonum sphaerocephalum var. sphaerocephalum Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km (11.5 mi) airline distance east-southeast of Ravendale.; 0 1830 Comment
  UC85705  Eriogonum sphaerocephalum var. sphaerocephalum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  JEPS117571  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2010-7-31 16989 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  UC1924215  Eriogonum strictum var. anserinum Debra Valov 2004-6-9 2004268 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1270 Comment
  HSC63564  Eriogonum strictum var. anserinum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6033 Lassen Ash Valley along rd. branching off Adin-Madeline Rd. 2.5 mi. from jct. 1555 Comment
  NY283167  Eriogonum strictum var. anserinum G. Schoolcraft 1983-7-12 1085 Lassen Southeast slopes of Shinn Mountains, 32-16-5 SW 1828.8 Comment
  UCD149821  Eriogonum strictum var. proliferum William Anderson 1963-6-2 s.n. Lassen Lassen County. Comment
  CAS-BOT-BC267885  Eriogonum umbellatum Marcus E. Jones 1897-6-26 s.n. Lassen Perkin's Ranch, Susanville 1463 Comment
  JEPS126484  Eriogonum umbellatum Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -051 Lassen Take Horse Lake Road for about 15 miles. Comment
  SEINET8513574  Eriogonum umbellatum O. Schilling, M. Gray, S. Jesselson, A. Rosenblum 2015-7-16 NV 030 -1125 Lassen Constantia Allotment, South on Red Rock Road until reach Highway 395, head South, second left into allotment, halfway up first hill 1469 Comment
  RSA0029317  Eriogonum umbellatum John F. Emmel 1997-6-8 1489 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. 1402 Comment
  CAS-BOT-BC267815  Eriogonum umbellatum var. covillei G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mtn. 2316 Comment
  CHSC13632  Eriogonum umbellatum var. modocense M. S. Taylor 1974-7-13 306 Lassen Ca. 150 ft w of Mahogany Lake, ca. 5 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC30618  Eriogonum umbellatum var. modocense Eric Miller 1975-7-8 7 Lassen N. E. slope of Gallatin Peak. 2011 Comment
  CHSC6227  Eriogonum umbellatum var. modocense A. Santos 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  JEPS107821  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
  NY399401  Eriogonum umbellatum var. nevadense N. H. Holmgren 1970-6-25 4375 Lassen North end of Petersen Mountain, near U.S. 395, 8 miles north of junction with California 70 (Hallelujah Junction) 1524.0 Comment
  POM105088  Eriogonum umbellatum var. nevadense Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  JEPS56205  Eriogonum ursinum Hilda W. Grinnell 1934-6-2 Lassen Fredonyer Pass 1753 Comment
  CHSC4943  Eriogonum vimineum W. Lessig 1967-7-11 26 Lassen 3 mi se of Eagle Lake Biology Station on rd to Murrer's Meadow. 1524 Comment
  CHSC4981  Eriogonum vimineum R. Clicquennoi 1967-6-24 32 Lassen On the approaches to Murrer's Upper Meadow 4 mi e of Eagle Lake Biology Station. 1524 Comment
  CHSC64888  Eriogonum vimineum Vernon H. Oswald; Lowell Ahart 1995-6-19 6882 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. On the edges and bottom of an eroded dry wash on the n side of the road. 1371 Comment
  JEPS56154  Eriogonum vimineum W. L. Jepson 1918-8-2 7764 Lassen Beckwith Pass 1463 Comment
  NY399613  Eriogonum vimineum N. H. Holmgren 1980-7-3 9493 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
  POM105137  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  POM203843  Eriogonum vimineum J. T. Howell 1934-7-8 12493 Lassen Spaldings Resort; Eagle Lake Comment
  RSA252387  Eriogonum vimineum Robert F. Thorne, C. W. Tilforth 1969-9-6 39260 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC262356  Eriogonum vimineum Margaret Williams; Louella Bass 1972-10-22 EV 1 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC262357  Eriogonum vimineum Mrs. H. C. Cantelow 1940-10-5 4177 Lassen N. W. of Johnsville Comment
  POM111648  Eriophorum gracile Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CDA20364  Eriophyllum lanatum D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 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
  SEINET10919981  Eriophyllum lanatum David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17793 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-BC308134  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11889 Lassen 12 miles n. of Susanville on road to 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
  UC566757  Eriophyllum lanatum var. achilleoides Loyd Swift 1928-6-12 Lassen Halls Flat Lassen National Forest, Halls Flat Comment
  UC773893  Eriophyllum lanatum var. achilleoides L. R. Short and J. Warren 1936-6-29 S 459 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1822 Comment
  CHSC60819  Eriophyllum lanatum var. integrifolium Vernon H. Oswald; Lowell Ahart 1993-6-28 5583 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  RSA221801  Eriophyllum lanatum var. integrifolium Noel Holmgren, John J. Fay, Barton L. Bethers 1970-6-25 4376 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  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
  UCD103215  Erodium cicutarium P. B. Schultz 1967-7-12 75 Lassen 100 feet east of highway, 1/4 mile west of Willow Creek campground, 14.9 miles southeast of Adin on State Highway 139. 1524 Comment
  CHSC58831  Eryngium alismifolium Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 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
  UC1745690  Eryngium alismifolium Annetta M. Carter 1945-9-30 1716 Lassen W side of Eagle Lake. About 3 mi. S of Spaldings where road crosses bridge over dry creek. Comment
  CAS-BOT-BC40726  Erysimum capitatum John Thomas Howell 1934-6-14 12154 Lassen Warner Mountains. Near Lost Lake. 2438 Comment
  UC1533163  Erysimum capitatum G. Schoolcraft 1986-4-28 1529 Lassen lower w slopes Ft. Sage Mtns. 1432 Comment
  JEPS53558  Erysimum capitatum var. capitatum Frances D. Payne 1929-7-12 93 Lassen on ridge above Lost Lake; Warner Mts. 2286 Comment
  CAS-BOT-BC150214  Erythranthe Clare B. Hardham 1969-8-28 17453 G Lassen West of Janesville Comment
  CHSC60857  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1993-6-28 5610 Lassen N of Hwy 44 on Rd. 33N06, on the Sse flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  CHSC71396  Erythranthe floribunda V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9258 Lassen Moll Reservoir in Ash Valley southeast of Adin. Along the upper edge of the reservoir. 1615 Comment
  CHSC30569  Erythranthe guttata Sori H. Shad 1970-6-26 30 Lassen Collected in Deans Meadow. 1950 Comment
  SD7073  Erythranthe lewisii Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CHSC4895  Erythranthe primuloides Bill Wilson 1967-6-28 61 Lassen Collected at Dean's Meadow, 6 mi. S of Eagle Lake Biological Station. 4 mi. N of Susanville. 1950 Comment
  SEINET13754534 Image available Erythranthe pulsiferae C. L. Hitchcock 1940-1 6611 Lassen Lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1370 Comment
  CHSC60777  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1993-6-3 5486 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1731 Comment
  CAS-BOT-BC110550  Eschscholzia John Thomas Howell 1955-7-19 30814 Lassen Sierra Nevada. East side of Beckwourth Pass. 1493 Comment
  CAS-BOT-BC403146  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-16 8344 Lassen Janesville Comment
  CAS-BOT-BC403147  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-11 7964 Lassen Eastern Fall River Valley Comment
  UC725540  Eschscholzia californica A. A. Heller 1941-6-26 16228 Lassen a short distance w county line near Adin (Modoc County) (along U.S. Hwy 299) Comment
  CAS-BOT-BC403151  Eschscholzia californica Ira L. Wiggins; Dorothy B. Wiggins 1961-6-16 165311 Lassen Along Highway 299, overlooking Big Valley 1249 Comment
  CHSC5248  Euphorbia crenulata L. Harman 1946-6-23 Lassen Eagle Lake. Near top of Roop Mt. 2133 Comment
  CDA20565  Euphorbia virgata C. Pirosko 2005-7-28 PDR 1303859 Lassen Modoc Plateau; Eagle Brothers Ranch, 20 mi S of Susanville off Hwy 395. 0 Comment
  CHSC99482  Festuca idahoensis Lowell Ahart; John Dittes 2008-6-19 14880 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
  HSC29817  Festuca idahoensis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19186 Lassen Harvey Valley near Cone Springs Comment
  JEPS123453  Festuca idahoensis Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -142 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  POM112027  Festuca idahoensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC506991  Festuca idahoensis George A. Fischer and Irwin H. Johnson 1933-7-12 F 216 Lassen Lassen Forest 1722 Comment
  UCD65970  Festuca idahoensis R. Tofsrud 1947-7-1 219 Lassen East of Madeline. Comment
  CAS-BOT-BC278433  Festuca idahoensis Clarence R. Quick 1962-6-17 62 -30 Lassen Western Pacific RR., S. of Halls Flat, Susanville-Pittville road near Blacks Mt. Experimental Station 1706 Comment
  CHSC117218  Festuca microstachys var. microstachys Lowell Ahart; John Dittes 2016-6-7 21002 Lassen Near Stonebreaker Road, 0.7 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
  UC53777  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen near Bieber; Big Valley 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
  JEPS71219  Festuca rubra Brown and Wieslander 1922-7-23 80 Lassen Comment
  UC1024944  Festuca rubra Leo Whitney 1935-6-27 3327 Lassen 1 mi n Camp 10, Fruit Grower's Supply Company; Lassen National Forest Comment
  UCD66360  Festuca rubra R. Tofsrud 1947-7-1 220 Lassen Cedar Cr. East of Madeline. Comment
  CAS-BOT-BC278931  Festuca rubra George W. Gillett 1957-7-29 947 Lassen Lassen Volcanic National Park. Along trail between Butte Lake and Snag Lake 1859 Comment
  UC963893  Floerkea proserpinacoides Milo S. Baker 1952-5-23 12421 b Lassen e of Chester (along Highway 36); Highway 36 Comment
  RSA367711  Fritillaria atropurpurea Christopher Davidson 1975-6-7 2727 Lassen 2.1 mi W of Westwood on Hwy 36. 1555 Comment
  SEINET8478850  Fritillaria lanceolata C. G. Gulling 1905-1 1536 Lassen Big Meadows. Comment
  SEINET3886822  Fritillaria recurva J. P. Smith, J. O. Sawyer 1972-5-6 5235 a Lassen Lassen National Forest; Boundary Campground on State Route 89 south of Burney.; 0 1067 Comment
  CAS-BOT-BC304301  Gaillardia aristata T. C. Fuller 1965-8-25 14036 Lassen E side of Highway 395 to Doyle, 2.4 miles N of Hallelujah Junction Comment
  CHSC60766  Galium aparine Vernon H. Oswald; Lowell Ahart 1993-6-14 5548 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  RSA647556  Galium aparine Marion P. Harthill 1972-6-16 s.n. Lassen Doyle. Comment
  POM69204  Galium aparine var. echinospermum Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC59565  Galium bifolium Mary Meyer 1980-7-20 518 Lassen On west side of Fredonyer Peak. 2377 Comment
  CDA42121  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 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. Comment
  UC1226043  Galium multiflorum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8471 Lassen 50 mi se Susanville 1371 Comment
  RSA201323  Galium trifidum var. pusillum J. T. Howell 1959-9-23 34886 Lassen end of Juniper Lake. 2058 Comment
  CHSC105246  Gayophytum diffusum subsp. diffusum Lowell Ahart; John Dittes 2010-7-31 17020 Lassen On the north side of the road, about 30 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
  RSA719874  Gayophytum diffusum subsp. diffusum Michael A. Vincent, K. Levings 2006-7-29 12902 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CDA18258  Gayophytum diffusum subsp. parviflorum G. D. Barbe 1974-8-2 1920 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UC1122620  Gayophytum diffusum subsp. parviflorum A. Simontacchi 1940-5-28 779 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1258488  Gayophytum diffusum subsp. parviflorum G. Schoolcraft 1979-7-3 116 Lassen up road to Observation Lookout 4.7 mi from Horne Ranch Road intersection 2103 Comment
  UC303066  Gayophytum heterozygum Pearl Safford Lassen Susanville [uncertain locality] Comment
  UC1122615  Gayophytum humile A. Simontacchi 1940-6-6 821 A Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  UCSB64021  Gayophytum humile Ahart, Lowell; Howell, John 1974-7-9 Lassen Near S edge of Eagle Lake 1584 Comment
  SEINET3287483 Image available Gayophytum ramosissimum Marcus E. Jones 1897-6-18 Lassen Chats. 1524 Comment
  UC1037192  Gentiana newberryi Leo Whitney 1934-7-20 1505 Lassen ca 14 mi w Eagle Lake (Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  UC405455  Gentiana newberryi Mrs. R. M. Austin 1879-1 Lassen Mountain Meadows Comment
  UC878530  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen about a mi e Westwood 1524 Comment
  POM253026  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen About a mile east of Westwood. 1524 Comment
  CHSC58499  Gentianopsis simplex Vernon H. Oswald 1992-7-3 5052 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. Along drainage on the upper strand of the lake. 1851 Comment
  CAS-BOT-BC459350  Geum aleppicum Marcus E. A M Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  RSA122288  Geum canescens L. R. Short, J. Warren 1936-6-23 s.n. Lassen Burgess Spring Exp Range. 1765 Comment
  HSC95165  Geum macrophyllum Gordon Leppig 1998-7-12 951 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  CHSC89723  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  JEPS96022  Geum triflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7887 Lassen 2.5 mi s of Eagle Lake (Papoose Meadows located 0.5 mi e of Eagle Lake Road (A1), e side of the meadow n of the springs); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1127984  Geum triflorum K. E. Bradshaw 1939-5-27 243 Lassen Lassen National Forest, Black Mountain Experimental Forest, s end of Plot 39-4 Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1737 Comment
  UC1137768  Geum triflorum August L. Hormay 1934-7-2 Lassen Lassen National Forest, Black's Mountain Headquarters Black's Mountain Headquarters; Lassen National Forest, Black's Mountain Headquarters 1706 Comment
  JEPS94632  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen spur road on n side of Red Rock Rd. 0.6 mi e Hwy. 395 (s of Constantia) 1389 Comment
  CAS-BOT-BC523868  Gilia modocensis Alice Eastwood; John Thomas Howell 1940-6-16 8355 Lassen Constantia Comment
  NY1011680  Gilia polycladon G. Schoolcraft 1982-4-29 638 Lassen Amedee Canyon 1372 Comment
  JEPS109641  Gilia sinistra subsp. sinistra Dean W. Taylor 2002-6-21 18171 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  CHSC71242  Gilia sinuata Vernon H. Oswald; Lowell Ahart 1998-6-4 9146 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  RSA469630  Gilia sinuata Christopher Davidson 1975-6-7 2756 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC52853  Gilia sinuata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen near Chat (Honey Lake Valley); , near Chat Comment
  RSA126642  Glyceria borealis H. S. Yates 1936-8-12 6083 Lassen McKenzie Meadow. 1524 Comment
  CAS-BOT-BC280597  Glyceria elata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49473 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS127281  Gnaphalium palustre Lowell Ahart, John Dittes 2016-7-13 21108 Lassen About 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  CHSC60854  Gratiola ebracteata Vernon H. Oswald; Lowell Ahart 1993-6-28 5625 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  UC1533149  Gratiola ebracteata G. Schoolcraft 1986-7-28 1664 Lassen along edge Moll Res. (w of Ash Valley); w of Ash Valley 1606 Comment
  UC26770  Gratiola ebracteata M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  CHSC117760  Gratiola heterosepala Virginia Dains; Joanne Crawford 2016-6-9 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km southeast of Horse Lake, 23 km northwest of Shaffer Mtn. 1470 Comment
  CHSC36443  Grayia spinosa Theresa Costa 1982-6-2 24 Lassen Along Ravendale Rd ca. 10 yd e of Horse Lake. Comment
  HSC27351  Grayia spinosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19302 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  CDA6056  Grindelia nana D. Sheehy 1990-8-17 Lassen Highway 395, south of Doyle, ca. 5 miles north of Hallelujah Junction. 0 Comment
  UCD132463  Grindelia nana Dan Marcum 1978-7-3 s.n. Lassen exact location unknown. Comment
  JEPS124632 Image available Grindelia nana Himayat H. Naqvi 1965-7-13 164 Lassen Near pit river overflow number 7-05. Comment
  CHSC37692  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  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
  UC1123890  Gymnosteris parvula A. Simontacchi 1940-5-14 717 Lassen 10.2 mi e of Coyote Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  CAS-BOT-BC231156  Hackelia cusickii Mrs. A S. Baldwin 1928-5-1 s.n. Lassen Coyote Flat, over ridge from Dixie Village Comment
  CAS-BOT-BC231157  Hackelia cusickii Mrs. A S. Baldwin 1927-5-19 s.n. Lassen Lava beds Comment
  UC1553392  Hackelia cusickii G. Schoolcraft 1988-7-7 1810 Lassen about 14 air mi ne of Ravendale 1798 Comment
  UC1560393  Hackelia cusickii E. Joyal and D. Mehlman 1988-6-29 1296 Lassen Old Blue Lake Road w of present day road Old Blue Lake Road; Warner Mountains 1800 Comment
  UC1560394  Hackelia micrantha E. Joyal and D. Mehlman 1988-6-29 1295 Lassen Blue Lake campground Warner Mountains 1850 Comment
  NY537530  Halogeton glomeratus T. H. Kearney 1951-8-20 28229 Lassen Honey Lake Valley near Herlong 1280.2 Comment
  UCD98896  Halogeton glomeratus Collector Unknown 1950-9-1 s.n. Lassen vicinity of Herlong. Comment
  CHSC7647  Helianthus annuus Beverley J. Wise 1948-8-23 21 Lassen 5 mi. N.W. of Susanville of Las. Co. Rd. 201. 1371 Comment
  JEPS78105  Helianthus annuus G. W. Zamzow 1972-7-18 87 Lassen beside Hwy 395 16.8 mi s intersection with Highway 36 1280 Comment
  SBBG94823  Helianthus annuus G. K. Helmkamp 1990-9-23 A- 11 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  JEPS124645 Image available Helianthus annuus Michael D. Fleschner 1965-7-12 1965 -110 Lassen 2 miles south of MIlford, on Hwy 395. Comment
  CHSC118791  Helianthus cusickii L. P. Janeway; B. Castro 2015-6-5 11755 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
  RSA0012972  Helianthus nuttallii subsp. nuttallii H. L. Mason 1947-8-11 13492 Lassen Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  CHSC13635  Heliotropium curassavicum M. S. Taylor 1974-6-25 269 Lassen On w shore of Pelican Pt, on e shore of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  UC1776663  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  CHSC7685  Hesperochiron pumilus Beverley J. Wise 1969-5-9 46 Lassen 10.5 mi. west of Susanville on Forest serv. 8246 off Hwy. 36. 1524 Comment
  JEPS27189  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1682 Lassen Hwy 395 just w Tule Mountain 1645 Comment
  JEPS97309  Hesperolinon micranthum Vernon H. Oswald and L. Ahart 1995-7-5 6957 Lassen T30N R16E NW1/4 NW1/4 Sec. 7, 4540 ft, Modoc Plateau, Sagebrush Scrub. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395 1383 Comment
  RSA795326  Hesperolinon micranthum L. Ahart, John Dittes 2010-7-31 16975 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
  UC867806  Hesperolinon micranthum C. L. Hitchcock 1940-5-26 6618 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  UC60155  Hesperostipa comata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  UC641664  Hesperostipa comata G. L. Stebbins Jr. 1939-7-9 2939 Lassen 4 mi s Doyle (near hwy) 1310 Comment
  CHSC60795  Hesperostipa comata subsp. comata Vernon H. Oswald; Lowell Ahart 1993-6-14 5542 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  UCR244106  Heterotheca villosa Jim Andre, G. L. Clifton 1993-6-9 19697 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UC73894  Heterotheca villosa var. minor J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley; Honey Lake Valley Comment
  RSA0009648  Heterotheca villosa var. minor Marcus E. Jones 1897-6-18 s.n. Lassen Chat Comment
  UC1136852  Hieracium albiflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen <National> Forest 1737 Comment
  CAS-BOT-BC312415  Hieracium albiflorum Alice Eastwood 1912-8-22 1781 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  CHSC98320  Hieracium greenei B. Castro; L. P. Janeway 2005-7-10 1505 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  JEPS28669  Hieracium nudicaule George W. Gillett 1957-7-24 894 Lassen between Cameron Meadow and Snag Lake; Lassen Volcanic National Park 1950 Comment
  CHSC65312  Hippuris vulgaris Vernon H. Oswald 1995-8-21 7211 Lassen Warner Mts. Blue Lake located ca. 13 mi SE of Likely. Localized colony growing in shallow water of a large, marshy area at the SW corner of the lake. 1859 Comment
  OBI75895  Holodiscus discolor var. glabrescens Anthony Baniaga 2011-8-17 506 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1850 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
  CHSC6255  Holodiscus microphyllus var. glabrescens M. West 1946-7-7 Lassen Cone Lake near east border of Lassen Nat. Park. 1828 Comment
  UC1609207  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  OBI77055  Hordeum brachyantherum Anthony Baniaga 2011-8-4 487 Lassen Lassen NF. About 1/2 mi WNW of Griffith Hill along 30n21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  UC1100324  Hordeum brachyantherum subsp. brachyantherum Malcolm A. Nobs, S. Galen Smith 1949-7-21 1055 Lassen 4 mi N of Madelaine Comment
  JEPS114836  Hordeum jubatum Lowell Ahart, John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south 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
  RSA123433  Hordeum jubatum H. S. Yates 1936-8-11 6075 Lassen Baxter Creek 1280 Comment
  UC1137163  Hordeum jubatum August L. Hormay 1932-8-12 Lassen e edge Eagle Lake; Lassen National Forest, e edge Eagle Lake Comment
  UCD85742  Hordeum jubatum Gerald Dickinson 1963-7-15 99 Lassen Ravenville. US Hwy 395. 1618 Comment
  UCD85875  Hordeum marinum subsp. gussoneanum P. B. Kennedy 1927-6-15 s.n. Lassen Fall River Valley. By Pit River. Comment
  UC860563  Horkelia tridentata subsp. tridentata C. L. Hitchcock 1940-5-26 6597 Lassen ca 12 mi n Fall River (on Fall River) Comment
  CAS-BOT-BC537968  Horkelia tridentata var. flavescens Alice Eastwood 1912-8-22 1872 Lassen Morgan Spring, Butte Region Comment
  CAS-BOT-BC213001  Hosackia crassifolia H. D. Ripley; R. C. Barneby 1943-6-14 5438 Lassen Volcanic hillskide, in open pine woods, Susanville 1402 Comment
  JEPS87416  Hydrophyllum capitatum var. alpinum Vernon H. Oswald and Lowell Ahart 1993-5-12 5378 Lassen 3.5 mi nw of A21 to Westwood (on n side of road and on e side of Canal crossing Hwy 44) 1729 Comment
  UC1567386  Hydrophyllum capitatum var. alpinum G. Schoolcraft 1989-5-8 1872 Lassen about 1 mi e Silva Flat Reservoir 1737 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
  NY170062  Hymenolobus procumbens A. Tiehm 1986-5-12 10350 Lassen 1 road mi W of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  RSA88526  Hypericum androsaemum P. H. Raven 1951-7-27 3627 Lassen Lake Ediya Comment
  UC729644  Ipomopsis aggregata Carl B. Wolf 1929-9-1 3785 Lassen betw Grassy and Snag Lakes Mt. Lassen National Park Comment
  HSC17038  Ipomopsis aggregata Fred J. Kindel 1955-6-28 Lassen Susan River Comment
  UC1483837  Ipomopsis aggregata subsp. bridgesii G. Schoolcraft 1980-7-29 341 Lassen Widow Peak, Bureau of Land Management 1584 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
  UC2013402  Isatis tinctoria Debra Valov 2012-6-19 1116 Lassen Just S of junction of Co. Road 87 A at Co. Road 87. Comment
  UC2062873  Isoetes nuttallii Forrest Freund 2016-5-19 258 Lassen Pappoose meadow. Comment
  CHSC7635  Iva axillaris Beverley J. Wise 1969-5-23 23 Lassen 34.5 mi. E of Susanville on La. Co. Rd. 320. 1249 Comment
  HSC5876  Iva axillaris M. T. Milligan 1964-8-6 203 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA126721  Iva axillaris subsp. robustior Peter H. Raven, Otto T. Solbrig 1958-6-17 13265 Lassen Along Hwy 395, 11.8 miles NE of Litchfied Comment
  RSA719895  Iva axillaris subsp. robustior Michael A. Vincent, K. Levings 2006-7-29 12908 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CAS-BOT-BC148542  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  NY436061  Ivesia paniculata T. W. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 miles E of Adin. 1554.5 Comment
  UC1100988  Juncus balticus Malcolm A. Nobs and S. Galen Smith 1949-7-21 1062 Lassen 4 mi n Madeline Comment
  UC1133735  Juncus balticus A. Simontacchi 1940-5-17 738 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CHSC112771  Juncus balticus subsp. ater Lowell Ahart; John Dittes 2013-7-23 18903 Lassen Drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC23084  Juncus balticus subsp. ater John Pratt 1970-1 14 Lassen Comment
  UCD141340  Juncus balticus subsp. ater Herbert L. Mason; Verne Grant 1947-7-9 13297 Lassen 5 miles east of Bieber. Comment
  UC1583258  Juncus bufonius Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9467 Lassen 5.6 km (3.5 mi) s Madeline (along Highway 395); Madeline Plains 1620 Comment
  CHSC113074  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2013-7-23 18907 Lassen On the southwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117520  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2016-7-13 21140 Lassen Scattered along the south edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest ofk Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC59101  Juncus bufonius var. bufonius Vernon H. Oswald; Lowell Ahart 1992-8-25 5187 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  CHSC91305  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2005-6-2 11957 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
  JEPS121285  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2013-7-23 18907 Lassen On the SW 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
  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
  CDA36732  Juncus bufonius var. occidentalis Barbara L. Wilson, Peter Zika 2011-8-7 16809 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley where route A21 crosses the railroad tracks north of Westwood. Comment
  JEPS108560  Juncus confusus L. P. Janeway 2005-7-3 8456 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout 1580 Comment
  UC1136937  Juncus confusus L. R. Short and J. Warren 1936-6-10 S- 418 Lassen Burgess Spr. Exp. Range Lassen Forest 1856 Comment
  JEPS96098  Juncus dudleyi Vernon H. Oswald and Lowell Ahart 1996-6-17 7817 Lassen Bizz Johnson Trail at 6.0 milepost e Devils Corral Trailhead (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
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Feb 14 2008
  HSC29691  Juncus hemiendytus var. abjectus D. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19271 Lassen Harvey Valley near Cone Springs 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
  POM110628  Juncus macrandrus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1100948  Juncus mexicanus Malcolm A. Nobs and S. Galen Smith 1947-8-1 8230 Lassen irrigation ditch running sw into State Fish & Game nesting area on w end of Section 19 Madeline Plain Comment
  CDA33205  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC95312  Juncus nevadensis Gordon Leppig 1998-8-17 1041 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS103213  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen North slopes of Skedaddle Mountains 1828 Comment
  JEPS105651  Juncus occidentalis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the ''22'' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain 1560 Comment
  CHSC60461  Juncus orthophyllus Mary Ann Showers 1992-6-13 2537 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  CHSC117193  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 20990 Lassen 50 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
  CAS-BOT-BC81148  Juniperus occidentalis Doris Kildale Gillespie 1930-5-12 9322 Lassen 2 miles north of Susanville on road to Alturas Comment
  UCR164507  Juniperus occidentalis Maile Neel 2000-4-29 G- 4 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10859617  Juniperus occidentalis Leila M. Shultz, John S. Shultz 1985-6-23 Shultz 8601 Lassen 41 miles north of Susanville on highway 395. Dark basaltic soils. Western Juniper-sagebrush-bitterbrush association. 1435 Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  UCR4282  Juniperus occidentalis var. australis Frank C. Vasek 1965-8-31 650831- 06 Lassen 3.8 mi west of the Ranger Station at Susanville Comment
  RSA597842  Juniperus occidentalis var. australis F. C. Vasek 1962-9-3 620903 -1 Lassen State Highway 36, 3.6 miles west of Ranger Station, west of Susanville 1524 Comment
  CAS-BOT-BC81289  Juniperus osteosperma John Thomas Howell 1961-9-25 36969 Lassen East side of Beckwourth Pass 1554 Comment
  SEINET11066903  Juniperus osteosperma G. Schoolcraft 1998-4-27 2705 Lassen N end of Fort Sage Mountains, W slope. 1951 Comment
  CHSC57200  Kelloggia galioides Mary Meyer 1980-7-21 Lassen Beneath white fir stand. 2103 Comment
  UCR268962  Kelloggia galioides Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31426 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
  SEINET12319533  Kelloggia galioides N. E. Heiken 1978-1 78 Lassen E shore of Mahogany L, S of Eagle L 2060 Comment
  UC1024754  Koeleria macrantha Leo Whitney 1933-8-9 2298 Lassen ca 25 mi w of upper end of Eagle Lake Hall's Flat; Lassen National Forest, w of upper end of Eagle Lake 1737 Comment
  UC60736  Koeleria macrantha M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  CAS-BOT-BC271327  Koeleria pyramidata Louella Bass 1973-6-3 92 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC349842  Lactuca tatarica subsp. pulchella Gary Schoolcraft 1986-9-4 1669 Lassen Along n. shore of Eagle Lake 33-12-30 1554 Comment
  CAS-BOT-BC341484  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville 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
  CHSC71865  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1998-9-8 9575 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  JEPS114639  Lamium amplexicaule Lowell Ahart, John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS89760  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout 0.5 mi s of the Modoc County Line (Big Valley, Pit River Watershed); Big Valley, Pit River Watershed 1249 Comment
  UC864540  Lathyrus brownii A. A. Heller 1938-6-4 15148 Lassen 1 mi e Fredonyer Pass 1706 Comment
  UC864541  Lathyrus brownii A. A. Heller 1938-6-4 15147 Lassen 1 mi e Fredonyer Pass 1706 Comment
  JEPS94780  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1998-6-4 9143 Lassen s of Constantia (spur road on n side of Red Rock Road o.6 mi e of Highway) 1389 Comment
  UC30620  Layia glandulosa M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC468843  Layia glandulosa Franklin P. Nutting Lassen Dixey Valley Comment
  RSA337273  Layia glandulosa subsp. glandulosa Noel Holmgren, Patricia K. Holmgren 1980-7-4 9506 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 1890 Comment
  HSC95316  Lemna minuta Gordon Leppig 1998-8-17 1048 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET11586251  Lemna trisulca B. L. Wilson, R. Brainerd, D. Lytjen, B. Newhouse, N. Otting 2004-8-24 11166 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, W of an old railroad right of way 1463 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
  POM94542  Lepidium dictyotum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CHSC117182  Lepidium perfoliatum Lowell Ahart; John Dittes 2016-6-7 21017 Lassen On the east edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) southwest of Bieber. 1397 Comment
  CHSC36444  Lepidium perfoliatum Jeffrey R. Peek 1982-6-1 22 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd. Ca. 10 yd e of Ravendale Rd. Comment
  CHSC36487  Lepidium perfoliatum Margaret E. Halloran 1982-6-2 1 Lassen Ca. 2 mi e jct of Hwy 139 and Ravendale Rd. Comment
  CHSC525  Lepidium perfoliatum J. Wakeman 1963-5-11 Lassen 1 mi. north of Honey Lake. Near Hot Springs. Comment
  CHSC99742  Lepidium perfoliatum Lowell Ahart; John Dittes 2008-6-20 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 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS126526  Lepidium perfoliatum Lowell Ahart, John Dittes 2016-6-7 21017 Lassen On the east edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  NY90026  Lepidium perfoliatum D. B. Dunn 1971-6-2 17749 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, Junction of US 395 and California 70 Comment
  OBI48159  Lepidium perfoliatum Rhonda Riggins 1989-4-27 1642 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  UC1609178  Leptodactylon pungens Vernon H. Oswald and Lowell Ahart 1993-6-28 5594 Lassen Harvey Lake Rd. (33N02) 2.0 mi n of Hwy 44 e Poison Lake (e side of Grays Valley); e of Poison Lake, e side Grays Valley 1731 Comment
  UC526131  Leptodactylon pungens John Thomas Howell 1934-7-9 12524 Lassen Pine Creek Flat Comment
  UC1542923  Leucanthemum vulgare Gary Schoolcraft 1987-6-17 1746 Lassen about 3 mi e of Westwood; Hwy 36 1554 Comment
  UC70406  Leucocrinum montanum Milo S. Baker 1891-1 Lassen near Adin; Big Valley Comment
  CAS-BOT-BC508365  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen Along Hwy. 139 n. of Said Valley Reservoir 1676 Comment
  NY962818  Leucophysalis nana N. H. Holmgren 1980-7-4 9510 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  HSC75895  Lewisia nevadensis D. H. Norris, S. Dowty, Thomas W. Nelson 1971-6-22 19194 Lassen Harvey Valley near Cone Springs Comment
  CHSC64848  Lewisia rediviva Vernon H. Oswald 1995-6-26 6946 Lassen Modoc Plateau. Coyote Flat on Hunzinger Flat Rd. (FS 38N04) 5.6 mi s of its junction with Ash Valley Rd. (Lassen 527). 1783 Comment
  JEPS126490  Leymus cinereus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-14 CA 350 -76 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the Skedaddle Road, head uphill to the end of private property squares. Comment
  JEPS128173  Leymus cinereus M. C. Mahoney, J. A. Nash 2017-8-22 CA 350 -88 Lassen South of Pilgrim Lake of Buckhorn Byway. From Susanville take Highway 395 north to Buckhorn Byway and follow the road east past Buckhorn Reservoir and Dry Lake. Then take a right onto an unnamed road that is right on the CA/NV border. Continue for 1/2 mile. Population is on either side of the road. Comment
  JEPS68548  Leymus cinereus W. L. Jepson 1918-8-2 7795 Lassen Constantia Honey Lake Valley 1219 Comment
  UCD64234  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mi. N of Sagehen Summit on W side of Hwy 395. 1706 Comment
  UCD64266  Leymus cinereus A. H. Shunk 1923-7-28 Lassen Madeline. Comment
  RSA126617  Leymus condensatus H. S. Yates 1936-8-12 6086 Lassen McKenzie Meadows 1524 Comment
  CAS-BOT-BC274465  Leymus triticoides Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  UC1131756  Leymus triticoides A. Simontacchi 1940-8-30 912 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC38251  Leymus triticoides J. Burtt Davy Jun 17 1897-Jun 24 1897 3320 Lassen Honey Lake Valley Comment
  UCD65610  Leymus triticoides L. Whitney 1933-8-5 s.n. Lassen Lassen National Forest. Near Slate Cr. 1889 Comment
  UCD86642  Leymus triticoides J. Earl Coke 1931-6-1 s.n. Lassen Lassen County. 1524 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
  HSC15584  Lilium pardalinum subsp. pardalinum Fred J. Kindel 1955-7-8 Lassen Susan River Comment
  RSA508635  Lilium washingtonianum Mrs. R. M. Austin 1880-7-20 s.n. Lassen Mount Dyer [SW edge of Lassen Co.] Comment
  CHSC60774  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1993-6-14 5508 Lassen Lassen A21 (32N02), 5.3 mi E of Lassen 105 (32N28Y), near Summit Camp, ca. 7 mi (air) W of Eagle Lake. 1889 Comment
  SEINET9337712  Limosella acaulis Robert Thorne, DeBuhr, Larry 1975-8-22 47206 Lassen Hwy 395 Comment
  JEPS3468  Limosella aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3354 Lassen Honey Lake Valley; Adobe meadows Comment
  SEINET12765227  Linanthus ciliatus Vernon H. Oswald, Lowell Ahart 1997-6-24 8605 .1 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10).; 0 1655 Comment
  UC1025096  Linanthus harknessii Leo Whitney 1934-5-27 1639 Lassen near Crater Lake 1828 Comment
  UC1483841  Linanthus harknessii G. Schoolcraft 1980-7-16 314 Lassen near Nelson Corral Reservoir 1804 Comment
  UC1609319  Linanthus harknessii Vernon H. Oswald and Lowell Ahart 1993-6-14 5516 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd (Lassen A1), 0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  CHSC29952  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds on the w side of Eagle Lake. 1584 Comment
  CHSC92715  Linanthus pungens L. P. Janeway; B. Castro 2005-7-10 8479 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  UC1136855  Linum lewisii L. R. Short and D. Gish 1936-6-5 S 385 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1760 Comment
  UC867779  Linum lewisii Alice Eastwood Aug 22 1912-Aug 26 1912 1853 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC36469  Linum lewisii var. lewisii Jeffrey R. Peak 1982-6-3 30 Lassen Ca. .8 mi s jct forest service roads 5.I6 and 5.I7 heading toward 5-corners. Comment
  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
  CAS-BOT-BC111965  Lipocarpha micrantha John Thomas Howell 1974-7-10 50524 Lassen Elysian Valley 1325 Comment
  SEINET10483062  Lithophragma brevilobum Mary Susan Taylor 1974-5-4 Taylor 228 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
  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
  CHSC60768  Lithophragma tenellum Vernon H. Oswald 1993-6-3 5478 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poisen Lake and Susanville. 1731 Comment
  JEPS94478  Lithophragma tenellum Vernon H. Oswald and Lowell Ahart 1997-5-27 8503 Lassen 0.1 mi e of Highway 139 (Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat, creek paralleling the road); Forest Route 38N04 1546 Comment
  SBBG125299  Lithospermum arvense L. Ahart, J. Dittes 2012-7-11 18351 Lassen N edge of a farmed field, S side of hwy, ca. 100 yards E of Cable Rd and Pittville Rd, 2.16 mi NNE of Pittville, 3955 feet E of Lassen-Shasta County Line, Fall River Valley 1205 Comment
  JEPS21376  Lithospermum ruderale Brown and Wieslander 1922-6-13 64 Lassen Martin Springs Eagle Lake (Eagle Lake) Comment
  HSC69589  Lithospermum ruderale Gary Schoolcraft 1979-6-19 67 Lassen W of Post Camp on N side of main road 1829 Comment
  UC1132218  Lolium temulentum A. Simontacchi 1940-6-13 855 Lassen 3.4 mi wsw Patterson Mountain (Lassen National Forest); Halls Flat Quad., Lassen National Forest Comment
  SEINET8588544  Lomatium austiniae 2015-5-20 NV 030 -1058 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line 1460 Comment
  CHSC42594  Lomatium bicolor var. leptocarpum Vernon Oswald 1986-5-28 2065 Lassen Hwy 139 between Eagle Lake and Adin, 49.0 mi n of Susanville. 1630 Comment
  POM132862  Lomatium bicolor var. leptocarpum M. S. Baker 1894-07 s.n. Lassen Big Valley Comment
  RSA0049671  Lomatium bicolor var. leptocarpum Dean Wm. Taylor 2012-5-15 21195 Lassen Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley) 1676 Comment
  CHSC71064  Lomatium macrocarpum Vernon H. Oswald; Lowell Ahart 1998-5-22 9110 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  HSC81652  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6028 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
  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
  UC1123079  Lomatium macrocarpum A. Simontacchi 1940-5-17 750 Lassen 1.1 mi. s.-s.w. Dixie Spring; Halls Flat Quad. Comment
  POM78183  Lomatium nevadense Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  UC1951074  Lomatium nevadense Debra Valov 2009-4-25 2009017 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC101028  Lomatium nevadense var. nevadense John Dittes 2008-5-22 1540 Lassen Modoc Plateau; ca 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca. 465 feet east of intersection of Hwy 139 and FS Road 36N02. 483 Comment
  UC1123081  Lomatium nevadense var. nevadense A. Simontacchi 1940-5-14 709 Lassen 10.2 mi. e. Coyote Spring (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  UC1123086  Lomatium nevadense var. parishii A. Simontacchi 1940-5-14 709 A Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD127700  Lomatium nevadense var. parishii Grady L. Webster 1989-5-13 7718 Lassen 2.5 mi east of Beckworth Pass. Comment
  CHSC108004  Lomatium nudicaule Lowell Ahart; John Dittes 2011-6-20 17497 Lassen About 40 yards east of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC42627  Lomatium nudicaule Vernon Oswald 1986-5-28 2047 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  UC1123088  Lomatium nudicaule A. Simontacchi 1940-6-13 857 Lassen 3.3 mi. w.-s.w. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UC1187705  Lomatium plummerae Tracey and Viola Call 1961-5-30 1961 Lassen about 3 1/2 mi S of Ravendale Comment
  CAS-BOT-BC217794  Lomatium ravenii H. D. Ripley; R. C. Barneby 1944-5-30 5973 Lassen South of Ravendale 1676 Comment
  OBI81391  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2049 Lassen Ravendale, Horse Lake road. 1/8 mile west of Jct. with 395 about 1.5 miles south of Ravendale, in sagebrush. Yellow blossom. 1463 Comment
  UCD55281  Lomatium vaginatum Ellen Dean; Gary Schoolcraft 2006-5-16 3100 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. 1207 Comment
  OBI48162  Lomatium vaginatum Rhonda Riggins 1989-4-27 1633 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  SEINET9672826  Lomatium vaginatum G. Schoolcraft 1979-5-1 13 Lassen East of Post Camp 1707 Comment
  RSA18256  Lonicera conjugialis C. B. Wolf 1929-9-1 3786 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  CHSC7677  Lotus corniculatus Beverley J. Wise 1969-5-23 59 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  UC726744  Lotus denticulatus A. A. Heller 1941-6-24 16191 Lassen 1 mi e Sieber (along US Hwy 299) Comment
  RSA339993  Lotus humistratus Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-3 9481 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) airline distance northwest of Termo. 1620 Comment
  SEINET10452003  Lotus purshianus Mary Susan Taylor 1974-1 Taylor 281 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UCD169260  Lotus uliginosus S. L. Welsh; N. D. Atwood 2001-6-14 28145 Lassen Secret Valley Spring, at Cherry Creek rest stop, Hwy 395. 1520 Comment
  CAS-BOT-BC198254  Lupinus John Thomas Howell 1976-7-19 51949 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CHSC4980  Lupinus R, Cliquennoi 1967-6-30 36 Lassen 2 mi from Eagle Lake Biological Station abundant along roadside. 1554 Comment
  RSA0027355  Lupinus John F. Emmel 1994-7-17 1330 Lassen Summit area of Observation Peak. 2378 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
  RSA622143  Lupinus B. J. Cox, Paul Gallian 1971-6-2 2590 Lassen Approx. 6 mi. S. of Susanville at Jct. of U.S. Hwy 395 and Calif. Hwy 36 to Susanville, near Johnstonville. 1311 Comment
  CHSC29949  Lupinus arbustus Robin Ondricek 1978-6-6 30 Lassen Approx. 1 mi from ELFS where lines corss road. 1584 Comment
  CHSC37703  Lupinus arbustus M. S. Taylor 1982-8-27 5051 Lassen Crystal Peak, Diamond Mt, 6 air mi sw of Doyle. 2377 Comment
  SEINET10903629  Lupinus arbustus subsp. arbustus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2590 Lassen Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville, assoc.; Purshia, artemisia 1311 Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 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
  SEINET10841274  Lupinus arbustus subsp. silvicola Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2577 Lassen 6 miles s of adin; along cal hwy 139 right-of-way; in basalt-clay, grassy road Bank; artemisia juniper assoc 1372 Comment
  CAS-BOT-BC196341  Lupinus argenteus var. argenteus Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 3 1/2 miles S. of Secret Valley C.C.C. Camp, U.S. Hy. 395 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-BC208741  Lupinus argenteus var. heteranthus Philip A. Munz 1947-5-20 11888 Lassen Milford 1264 Comment
  CAS-BOT-BC208752  Lupinus argenteus var. heteranthus Gary Schoolcraft 1983-7-20 1098 Lassen S. slopes of Fredonyer Peak 2194 Comment
  CAS-BOT-BC208756  Lupinus argenteus var. heteranthus Frank W. Peirson 1926-6-24 6852 Lassen Madeline Plains Comment
  CAS-BOT-BC208757  Lupinus argenteus var. heteranthus Doris Kildale Gillespie 1930-5-13 9372 Lassen Between Susanville and Janesville. Comment
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline Comment
  CDA27387  Lupinus argenteus var. heteranthus T. C. Fuller 1963-6-11 10660 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC106069  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2010-7-31 16977 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
  CHSC93684  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2005-6-1 11873 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.8 miles (air) northwest of Hallelujah Junction. 1448 Comment
  RSA160042  Lupinus argenteus var. heteranthus David B. Dunn 1956-7-3 11919 Lassen On 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
  SBBG126108  Lupinus argenteus var. heteranthus L. Ahart, J. Dittes 2010-7-31 16977 Lassen ca 100 yards NE of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  UC1129768  Lupinus argenteus var. heteranthus A. Simontacchi 1940-6-28 721 Lassen 5.7 mi s Eldridge; Lassen National Forest, Halls Flat Quad. Comment
  UC1137309  Lupinus argenteus var. heteranthus L. R. Short and Wm. Gansberg 1936-7-3 S- 471 Lassen Burgess Spr. Exp. Range; Lassen National Forest 1859 Comment
  UC865100  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 mi w Doyle; w of Doyle Comment
  UCD106820  Lupinus argenteus var. heteranthus Leo Whitney 1934-7-17 s.n. Lassen Lassen N. F. Comment
  RSA8059  Lupinus caudatus H. A. Barker 1927-7-15 806 Lassen Desert east of Beckwith near highway. Comment
  UCR18734  Lupinus caudatus Frank C. Vasek 1975-7-11 750711- 15 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  SEINET10490707  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11919 Lassen Collected on rolling gravelly slopes, in spots of deeper soil and also in Runoff areas from the hwy. Comment
  SEINET10490715  Lupinus caudatus subsp. caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25n, r17e, se1/4, sec 8. Doyle quad. Corolla blue. In sandy sagebrush Scrub, in doyle, ca 0.5 mi. E of hwy 395. Comment
  SEINET10936587  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11914 Lassen Collected at jct of hwy 395 and 36 near johnstonville. 6 Mi. E of susanville. Open valley with sparse artemesia tridentata, arid grassland well below Woodland. Comment
  SEINET10687175  Lupinus croceus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 154 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
  SEINET6655529  Lupinus laxiflorus var. calcaratus Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale.; 0 1830 Comment
  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
  UC1523798  Lupinus lepidus var. sellulus Gary Schoolcraft 1982-8-14 854 Lassen along Hwy 139 near Upper McBride Sp (se of Adin); near Upper McBride Sp. 1584 Comment
  HSC103510  Lupinus lepidus var. sellulus Thomas W. Nelson, Jane Nelson 1986-6-23 8144 Lassen Along State Route 44, 10.9 mi. from Old Station junction. 1585 Comment
  SEINET10488726  Lupinus leucophyllus Charles Piper Smith 1947-6-13 Smith 47448 Lassen Highway 299, adin, 1.3 mi west Comment
  NY747375  Lupinus leucophyllus var. leucophyllus H. D. D. Ripley 1943-6-13 5679 Lassen Milford 1265 Comment
  JEPS114708  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC202120  Lupinus nevadensis Doris Kildale Gillespie 1930-5-13 9373 Lassen Beteen Susanville and Janesville Comment
  RSA0005617  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA18697  Lupinus onustus Marcus E. Jones 1887-06 s.n. Lassen Susanville Comment
  SEINET8059970  Lupinus polyphyllus var. burkei W. W. Eggleston 1910-1 6305 Lassen Vicinity of Doyle Station 1240 Comment
  SEINET10488918  Lupinus sellulus Katherine L. Morris 1973-5-25 Morris 215 Lassen Collected 2.6 mi w of susanville, on u.s. 36, In an area of pinus jeffreyi and Purshia. Intermediate to l. Confertus (?). Comment
  HSC95306  Lycopus uniflorus Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 681 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM298318  Madia citrigracilis D. D. Keck 1930-7-23 949 Lassen Susanville. 1280 Comment
  CAS-BOT-BC342658  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen Intersection of Hwy. 139 & A2 south of Adin Comment
  CHSC4904  Madia elegans Bill Wilson 1967-7-15 163 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  UC89447  Madia elegans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  RSA719892  Madia elegans subsp. elegans Michael A. Vincent, K. Levings 2006-7-29 12912 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  POM29904  Madia elegans subsp. elegans Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC717967  Madia glomerata David D. Keck 1944-7-8 5447 a Lassen 2 mi e Westwood (in meadow leading down to Mountain Meadows Reservoir); Sierra Nevada 1524 Comment
  CAS-BOT-BC334688  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC334691  Madia glomerata Alice Eastwood 1912-8-22 1801 Lassen Morgans Springs, Lassen Butte Region Comment
  CAS-BOT-BC343055  Madia gracilis David D. Keck 1930-7-23 949 Lassen Susanville 1280 Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC512879  Maianthemum stellatum Louella Bass 1973-5-25 37 Lassen Elysian Valley 1325 Comment
  UC1594528  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1992-7-16 5126 Lassen between Old Station and Susanville (Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1 mi e of Willow Spring Rd. (Forest Rd. 31N56)) 1745 Comment
  UC62420  Marsilea oligospora Baker and Nutting 1894-7-25 Lassen near Eagle Lake Comment
  UC62421  Marsilea oligospora Baker and Nutting 1894-7-12 Lassen Pine Creek 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
  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
  JEPS93977  Melica fugax Vernon H. Oswald 1998-6-22 9232 Lassen ca. 18 air mi. n. Westwood (Champs Flat Rd. (A-21) 1.8 mi. n. of Hwy. 44) 1749 Comment
  JEPS94455  Melica fugax Vernon Oswald and Lowell Ahart 1997-6-24 8645 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  SEINET208829 Image available Melica fugax Jack Major 1966-6-24 Lassen Modoc National Forest ; Long Valley 3 miles airline southwest of Patterson Guard Station northeastern Lassen County. 2088 Comment
  UC188796  Melica fugax Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UC1024648  Melica stricta Leo Whitney 1933-8-3 2206 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 Comment
  CHSC106683  Mentzelia albicaulis B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 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
  JEPS107449  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
  JEPS117360  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  JEPS117562  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS124817 Image available Mentzelia albicaulis N. L. Rechen 1964-7-1 73 Lassen 1 mile north of Susanville. H. 139 Comment
  UCD117207  Mentzelia albicaulis 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
  UC124778  Mentzelia congesta T. S. Brandegee 1893-6-23 Lassen Honey Lake Comment
  CHSC13851  Mentzelia dispersa J. Grove 1973-7-30 Lassen At Sugar Pine Basin. 1524 Comment
  JEPS94543  Mentzelia dispersa Vernon Oswald and Lowell Ahart 1997-6-24 8603 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  CHSC99239  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  CHSC99295  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-20 14951 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114755  Microseris laciniata subsp. laciniata Lowell Ahart, John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  UC1136772  Microseris laciniata subsp. laciniata George A. Fischer and Irwin H. Johnson 1933-7-12 F- 195 Lassen Grass Valley (Dry Lake) Lassen National Forest 1694 Comment
  UC563094  Microseris laciniata subsp. laciniata Elmer I. Applegate 1929-6-24 5879 Lassen near Bieber; Big Valley, Gumbo Flat Comment
  CHSC106089  Microseris nutans Lowell Ahart; John Dittes 2010-7-31 17000 Lassen Dry meadow, on the north side of the road, about 30 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC89724  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
  UC450131  Microseris nutans Franklin P. Nutting Lassen s side Dixie Mt. Comment
  CHSC66254  Microsteris gracilis Vernon H. Oswald; Lowell Ahart 1996-6-24 7844 Lassen Papoose Meadows locaed ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montane Meadow. 1633 Comment
  SEINET10496963  Microsteris gracilis subsp. gracilis Mary Susan Taylor 1982-5-7 Taylor 4429 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  RSA104219  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9803 Lassen Hills between Madeline and Likely 1524 Comment
  CHSC65360  Mimetanthe pilosa Vernon H. Oswald; Lowell Ahart 1995-8-14 7195 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  UCR201581  Mimulus Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  UC1609365  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  RSA505419  Mimulus breviflorus Rimo Bacigalupi, S. Galen Smith 1957-6-28 5998 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline 1616 Comment
  CDA41435  Mimulus floribundus L. Ahart, John Dittes 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  JEPS28988  Mimulus guttatus Frances D. Payne 1929-7-12 97 Lassen near s extremity Warner Range; Upper Silver Creek 2499 Comment
  UC1012180  Mimulus guttatus Francis W. Pennell 1940-6-10 25778 Lassen 3 mi e Westwood (Route 36) 1584 Comment
  UC886176  Mimulus guttatus A. A. Heller 1938-6-22 15183 Lassen 1 mi s Westwood 1524 Comment
  JEPS23735  Mimulus inflatulus Rimo Bacigalupi with S. Galen Smith 1957-6-28 5989 Lassen 7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Railroad, just e of U.S. Highway 395) 1676 Comment
  JEPS23844  Mimulus inflatulus Peter H. Raven with Otto T. Solbrig 1958-6-17 13298 Lassen 4.8 mi s Madeline (along United States Highway 395) Comment
  UC445158  Mimulus moniliformis Franklin P. Nutting July 12 Lassen Pine Creek Comment
  HSC20714  Mimulus moschatus M. T. Milligan 1964-7-16 132 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  HSC63954  Mimulus nanus var. mephiticus Teresa Prendusi 1980-7-1 Lassen Champ's Flat 1707 Comment
  JEPS24856  Mimulus nanus var. mephiticus Jean Langenheim 1957-6-26 4377 Lassen nw end Said Valley 1645 Comment
  RSA164351  Mimulus nanus var. mephiticus Clare B. Hardham s.n. Lassen Gold Run Creek south of Susanville. Comment
  RSA80410  Mimulus nanus var. mephiticus F. W. Peirson 1926-6-24 6853 Lassen Madeline Plain. Comment
  UC1063104  Mimulus pulsiferae A. Simontacchi 1940-6-15 862 Lassen 2.3 mi ssw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC886329  Mimulus pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen lava beds ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  JEPS19730  Mimulus suksdorfii Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5990 Lassen 7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Rail Road, just e of U.S. Highway 395); on Southern Pacific Rail Road 1676 Comment
  RSA536402  Mimulus suksdorfii Beth Corbin 1991-6-3 620 Lassen SW Harvey Valley, ca. 200 m NE of Whitehorse Well, ca. 6 mi N if USFS Bogart Work center. 1700 Comment
  HSC20810  Mimulus torreyi M. T. Milligan 1964-7-16 138 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  SEINET13948657 Image available Monardella odoratissima Ralph K. Gierisch 1968-1 3354 Lassen Highway 44; 5700 ft alt., T31N, R8E, SEC23 1737 Comment
  GMDRC6951  Monardella odoratissima subsp. glauca J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31425 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
  RSA530489  Monardella odoratissima subsp. odoratissima George K. Helmkamp 1990-10-4 R- 22 Lassen Plumas Nat. For., S of Susanville, N of Milford Pass. 1463 Comment
  CHSC118842  Monardella odoratissima subsp. pallida L. P. Janeway; B. Castro 2017-7-2 12340 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  CHSC23511  Monardella odoratissima subsp. pallida Wayne O. Baum 1971-7-12 71 -69 Lassen E. slope of Gallatin Peak. 2011 Comment
  CHSC25160  Monardella odoratissima subsp. pallida L. B. Barlow 1967-7-1 61 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road. 1554 Comment
  UC2035929  Monardella odoratissima subsp. pallida John Thomas Howell 1934-7-9 12525 Lassen Pine Creek Flat Comment
  CAS-BOT-BC222146  Monardella odoratissima subsp. pallida A. E. Anderson 1967-7-13 92 Lassen Eastern slope of Dean's Ridge, 0.6 mi. s of Five Corners on road to Gallatin Beach 1676 Comment
  CAS-BOT-BC222147  Monardella odoratissima subsp. pallida W. Lessig 1967-7-20 28 Lassen 2 mi s of Five Corners on w side of rd to Dean's Meadow 1828 Comment
  HSC14280  Monardella villosa D. E. Anderson 1963-8-25 2800 Lassen 3 mi. N of Cromberg along Hwy. Alt 40 1372 Comment
  CHSC116086  Monolepis nuttalliana Lowell Ahart; John Dittes 2015-7-13 20311 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC64782  Monolepis nuttalliana Vernon H. Oswald 1995-5-31 6808 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC91315  Monolepis nuttalliana Lowell Ahart; John Dittes 2005-6-1 11897 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS107400  Monolepis nuttalliana Lowell Ahart, John Dittes 2005-6-1 11897 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC1533152  Montia chamissoi G. Schoolcraft 1986-5-20 1578 Lassen about 4 mi n of Horse Lake 1630 Comment
  CAS-BOT-BC444691  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail. 1905 Comment
  RSA0011459  Montia chamissoi R. F. Thorne, Larry E. DeBuhr 1975-8-22 46979 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC66257  Montia linearis Vernon H. Oswald; Lowell Ahart 1996-6-24 7875 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Growing in moist soil on the edge of Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  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
  NY497780  Montia linearis N. H. Holmgren 1978-6-11 8915 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
  SEINET960052  Montia linearis Unknown 1978-1 8915 Lassen Vicinity of Spring at fork to Painters Flat on east side of Observation Peak, 28 Km (17.4 mi) airline distance. 1680 Comment
  UCD86509  Muhlenbergia andina Leo Whitney 1934-7-24 2195 Lassen Bridge Creek camp near Bridge Creek. 7-8 miles southwest of Eagle Lake, Lassen National Forest. 1737 Comment
  CAS-BOT-BC262636  Muhlenbergia asperifolia C. S. Robinson 1928-9-18 120 Lassen Lassen National Forest. Hanna Estate, Morgan Springs. Around Sulphur Springs 1508 Comment
  CAS-BOT-BC262637  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen Near Red Rock 1341 Comment
  UC1137155  Muhlenbergia asperifolia August L. Hormay 1932-8-12 Lassen se edge of lake Lassen National Forest, Eagle Lake Comment
  UC589858  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen near Red Rock; Sierraville Quadrangle 1341 Comment
  CHSC60477  Muhlenbergia filiformis Mary Ann Showers 1992-6-12 2519 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  UC163592  Muhlenbergia filiformis Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  UC60836  Muhlenbergia jonesii M. S. Baker and Frank Nutting 1894-7-30 Lassen near Silver Lake Comment
  UCD86985  Muhlenbergia richardsonis L. D. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Company, Camp #10. Comment
  SACT001607  Muhlenbergia squarrosa Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  JEPS107308  Myosotis discolor Lowell Ahart, John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC1609242  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-7-8 5651 Lassen 1.9 mi n ow Hwy 44, on se edge of Poison Lake (Pittville Road) 1709 Comment
  JEPS118467  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley 1268 Comment
  JEPS94606  Myosurus minimus Vernon H. Oswald and Lowell Ahart 1997-5-27 8518 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
  CHSC30584  Myriophyllum sibiricum P. V. Caldwell 1972-6-16 264 Lassen 3/4 miles E, on Forest Rd. 5, 1 1/2 miles from the station in Kildeere ond. Comment
  CHSC4844  Myriophyllum sibiricum R. Carter 1967-7-13 592 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CHSC676  Myriophyllum sibiricum V. Holt 1946-7-12 Lassen Pine Creek Slough. 1584 Comment
  RSA323647  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  HSC22985  Nama aretioides John Pratt 1970-7-5 67 Lassen 1250 Comment
  JEPS94128  Nama aretioides var. californica Vernon H. Oswald and Lowell Ahart 1998-5-22 9105 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  UC971978  Nama lobbii Annetta Carter 1946-8-19 1777 Lassen crest of ridge ten mi ne Susanville; ne of Susanville 1676 Comment
  RSA508616  Narthecium californicum Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  UCD87411  Nassella cernua T. S. Brandegee 1892-7-1 s.n. Lassen Susanville. Comment
  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
  UC604552  Navarretia breweri C. W. Sharsmith 1938-7-18 3638 Lassen 3 mi s Termo; Madeline Plains Comment
  SJSU8608  Navarretia breweri P. L. Billings 1965-7-12 Lassen by Hwy 139 5 mi NE of Susanville 1158 Comment
  CHSC44331  Navarretia divaricata Lowell Ahart; John Thomas Howell 1974-7-9 541 Lassen Along Eagle Lake Road, on the south-west side of Eagle Lake. 1584 Comment
  UC773937  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spring Experiment Range Lassen Forest 1844 Comment
  UC1058207  Navarretia intertexta C. McMillan 1949-6-15 1540 Lassen 5 mi w Bieber Comment
  UC1192110  Navarretia intertexta Herbert L. Mason 1955-7-31 14644 Lassen near Westwood Junction Comment
  UCD32670  Navarretia intertexta Beecher Crampton 1954-7-6 2072 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  CHSC112979  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2013-7-22 18853 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29924  Navarretia intertexta subsp. propinqua Robin Ondricek 1978-6-7 40 Lassen Murrers Upper Meadow, .7 mi E of intersection with main road to ELFS and tunnel crossing. 1560 Comment
  CHSC34347  Navarretia intertexta subsp. propinqua K. R. Stern 1974-6-26 5854 Lassen Ditch bank beside Railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  CHSC58847  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5101 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. On bed of lake. White-flowered plants collected at McCoy Flat Reservoir. 1745 Comment
  CHSC99510  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2008-6-22 15031 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS114394  Navarretia intertexta subsp. propinqua Lowell Ahart, John Dittes 2008-6-22 15031 Lassen about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  UC1008717  Navarretia intertexta subsp. propinqua Laura E. Mills 1940-7-8 Lassen about 2 mi s Susanville; Sierra Nevada Mountains 1524 Comment
  SJSU11520  Navarretia leucocephala subsp. bakeri J. W. Tilden 1958-6-27 1295 Lassen Madeline, Madeline Plains 1615 Comment
  CHSC117270  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2016-7-15 21213 Lassen About 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) notheast of Bieber, Big Valley. 1261 Comment
  CHSC34344  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5868 Lassen E end of Champs Flat. Comment
  CHSC54188  Navarretia leucocephala subsp. minima Vernon H. Oswald 1991-5-28 4617 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the bed of vernal pools on a flat east of the barn. 1264 Comment
  CHSC66253  Navarretia leucocephala subsp. minima Vernon H. Oswald; Lowell Ahart 1996-6-24 7847 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  POM75594  Navarretia leucocephala subsp. minima Marcus E. Jones 1897-6-18 10107 Lassen Chat. 1524 Comment
  UC1137761  Navarretia leucocephala subsp. minima August L. Hormay 1934-5-15 Lassen 2 mi n Eldridge's; Lassen Forest 1524 Comment
  CAS-BOT-BC230383  Navarretia leucocephala subsp. minima Beecher Crampton 1960-6-20 5731 Lassen 0.5 mile S of Black's Mountain Experiment Station, USDA Forest Service, Lassen National Forest 1706 Comment
  SEINET2440302  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2005-7-28 05 -220 Lassen Lassen Natl. Forest, NE Long Lake vicinity. Off Hwy 44 at mile marker 20.74. Along 31N01 leading to NE edge of lake.; 0 1712 Comment
  UC1137773  Navarretia linearifolia subsp. linearifolia August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest, Black's Mtn 1706 Comment
  RSA67607  Navarretia sinistra Verne Grant, Alva Grant 1950-7-13 8941 Lassen Above Fredonyer Camp on road from Westwood to Susanville 1524 Comment
  CHSC115600  Navarretia sinistra subsp. sinistra Lowell Ahart; John Dittes 2015-7-14 20521 Lassen Northwest of the pond, east part of the camping area, west side of Childs Meadow, 0.67 air-miles west of intersection of State Highway 36 and Wilson Lake Road (County Road 769), 1.21 air-miles southeast east of Doe Mt., 10.41 air-miles south of Lassen Peak. 1498 Comment
  SEINET10458443  Nemacladus rigidus Rupert C. Barneby 1943-6-15 Barneby 5765 Lassen Smoke Creek northeast of Viewland 1341 Comment
  NY1082721  Nemophila pedunculata N. H. Holmgren 1978-6-11 8911 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
  POM73805B  Nemophila pedunculata Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 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
  CHSC55804  Nicotiana attenuata Vernon H. Oswald 1991-9-23 4875 Lassen Lassen Volcanic Park. Butte Lake in the northeast corner of the park. Collected on the strand of the lake at its outlet; along the east side of the lake. 1841 Comment
  CHSC71124  Nothocalais troximoides Vernon H. Oswald; Lowell Ahart 1998-5-22 9097 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
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 Comment
  CAS-BOT-BC349916  Nothocalais troximoides G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2309 Lassen Crest of range head of Stony Ridge, west of Milford 1930 Comment
  CHSC106578  Oenothera deltoides C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  SEINET10453107  Oenothera deltoides Mary Susan Taylor 1982-6-12 Taylor 4652 Lassen T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft. 1280 Comment
  UC1584022  Oenothera deltoides subsp. cognata G. Schoolcraft 1990-6-12 2086 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC107611  Oenothera deltoides subsp. piperi T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  SEINET10491875  Oenothera deltoides subsp. piperi Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2591 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and calif hwy 36 to susanville, near johnstonville. Assoc; purshia-artemesia. 1311 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  CHSC4767  Oenothera elata subsp. hirsutissima R. Carter 1967-7-16 621 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side of rd. Comment
  RSA8247  Oenothera flava Elmer I. Applegate 1929-6-24 5881 Lassen Big Valley south of Bieber Comment
  RSA27327  Oenothera flava C. L. Hitchcock 1940-5-26 6642 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UC524174  Oenothera flava subsp. flava Elmer I. Applegate 1929-6-24 5881 Lassen s Bieber; Big Valley Comment
  CAS-BOT-BC349944  Onopordum acanthium T. C. Fuller 1958-7-8 898 -58 Lassen Highway 299, 0.1 mi. S. of Lassen County Line Comment
  CDA36768  Onopordum acanthium D. B. Joley 1976-6-16 1 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  CDA36782  Onopordum acanthium D. B. Joley 1976-6-16 21 Lassen Grasshopper Lake. 0 Comment
  SD243287  Onopordum acanthium D. B. Joley 1976-6-16 21 Lassen Grasshopper Lake 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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Apr 29 2013
  UCD134723  Oreostemma alpigenum var. andersonii Ratliff 1966-7-15 9 Lassen Lassen Forest. Lower Pine Creek - PLDT 49. 1676 Comment
  RSA0011497  Orobanche Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46972 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC10945  Orobanche corymbosa K. D. Cox 1971-7-5 144 Lassen Approx. 1/4 mi. NW of main campus L.F.S. 1554 Comment
  UC1136756  Orobanche corymbosa subsp. corymbosa L. R. Short and J. Warren 1936-6-30 S- 465 Lassen NW of Eagle Lake, Burgess Spring Experiment Range. Comment
  UC1199810  Orobanche corymbosa subsp. corymbosa Herbert L. Mason 1957-7-5 14715 Lassen Madeline Plains (town south of Madeline) Comment
  CAS-BOT-BC500270  Orobanche uniflora subsp. occidentalis Doris Kildale Gillespie 1930-5-13 9368 Lassen Between Susanville and Janesville Comment
  HSC24668  Orobanche vallicola John Pratt 1970-7-5 64 Lassen 1250 Comment
  JEPS74940  Orthocarpus bracteosus T. I. and F. M. Chuang 1975-7-23 7553 Lassen along road to Mountains Meadow Reservoir about 2 mi <?> Westwood; along road to Mountains Meadow Reservoir Comment
  UCD23273  Orthocarpus bracteosus Louis K. Mann; Pat Mann 1963-6-18 s.n. Lassen On State Highway 139 from Susanville to Adin, 11.8 miles north of Junction to Termo. Comment
  RSA14096  Orthocarpus campestris Elmer I. Applegate 1929-6-24 5884 Lassen North edge of the town of Beiber, Pit River. Comment
  RSA516524  Orthocarpus campestris Helen-Mar Wheeler 1952-7-11 s.n. Lassen South of Madeline. 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
  RSA712893  Orthocarpus lacerus L. P. Janeway 2005-7-3 8454 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  SEINET178349  Osmorhiza berteroi Marcus E. Jones 1897-6-28 Lassen Diamond Mt., Susanville, Perkin's Ranch. 1829 Comment
  SD7584  Osmorhiza occidentalis Mrs. R. M. Austin 1879-1 Lassen Comment
  JEPS114621  Packera cana Lowell Ahart, John Dittes 2008-6-19 14877 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UCD134780  Packera eurycephala Michael A. Vincent 1999-6-9 8581 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  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
  CAS-BOT-BC228565  Packera indecora Kirsten Bovee 2012-7-10 s.n. Lassen Lassen National Forest: 200 m south of Pine Creek near type locality 1706 Comment
  CHSC118854  Packera multilobata L. mP. Janeway; B. Castro 2015-6-5 11774 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end ofTuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  HSC95271  Packera pseudaurea var. pseudaurea Gordon Leppig 1998-7-12 948 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC10388  Paeonia brownii Margaret Williams; Steven Williams 1974-7-26 74- 2 -14 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  UC485769  Paeonia brownii H. E. and S. T. Parks June, 1928 223 Lassen Drakesbad Lassen National Park Comment
  CAS-BOT-BC259609  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE of Shaffer Mountain 1356 Comment
  CAS-BOT-BC259612  Pascopyrum smithii James Jokerst 1983-7-25 1898 Lassen Near Madeline Plains 1614 Comment
  CDA5490  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  CHSC107348  Pastinaca sativa Lowell Ahart; John Dittes 2011-6-22 17537 Lassen On both sides of Pumpkin Center Road (County Road 417), 1,257 feet east of intersection of fir Street, just east of Bieber, Big Valley. 1255 Comment
  CHSC71076  Pectocarya penicillata Vernon H. Oswald; Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  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
  JEPS68204  Pectocarya penicillata W. L. Jepson 1918-8-2 7770 Lassen Beckwith Pass 1463 Comment
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UC1567381  Pedicularis centranthera G. Schoolcraft 1989-5-3 1862 Lassen nw corner of Secret Valley 1356 Comment
  JEPS95203  Pellaea brachyptera Gary Schoolcraft 1996-3-31 2518 Lassen 4 miles SW of Susanville. 1493 Comment
  JEPS11489  Penstemon cinicola Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  SEINET10547960  Penstemon confusus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2607 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along ridge and in sandy wash. 1402 Comment
  POM203059  Penstemon deustus subsp. sudans J. T. Howell 1934-6-10 11880 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  HSC81803  Penstemon deustus var. pedicellatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6035 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  JEPS127712  Penstemon gairdneri Alejandro Brambila, Michael Dolan 2016-7-20 CA 320 -167 Lassen Railroad trail off 395 North of Tule Mountain. South end of loop. Population on Ridge to West. Comment
  CHSC25147  Penstemon gracilentus B. Anthony 1967-7-10 263 Lassen Deans Meadow, 6.8 mi from Eagle Lake Biological Station. 1920 Comment
  RSA537557  Penstemon gracilentus Barbara Ertter 1988-7-25 7866 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  RSA746506  Penstemon gracilentus K. M. Meyer, A. Townesmith 2007-7-23 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off hwy. 44. (turn at rest area). 1900 Comment
  NY600697  Penstemon gracilentus K. A. Vincent 1986-7-19 4382 Lassen Sierra Nevada, Roop Mountain; along CA A1 at Eagle Lake Summit, ca. 7.6 miles north of junction CA 36, ca. 7 air miles northwest of Susanville. 1932.4 Comment
  SEINET10547576  Penstemon heterodoxus var. shastensis Mary Merello 1993-6-27 Merello 742 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. 1700 Comment
  CHSC68882  Penstemon janishiae Vernon Oswald; Lowell Ahart 1997-6-24 8644 Lassen South of Susanville near the small pool on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC66733  Penstemon neotericus Vernon H. Oswald; Lowell Ahart 1996-8-1 8118 Lassen Junction of Forest Rd. 28N56 (D-line) and the spure road to Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1536 Comment
  SEINET11262098  Penstemon neotericus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3937 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  UC1523710  Penstemon neotericus Gary Schoolcraft 1981-7-9 502 Lassen e slope of Roop Mtn. Comment
  UC423645  Penstemon neotericus David D. Keck 1930-7-23 957 Lassen two mi e Westwood; Sierra Nevada, e of Westwood 1493 Comment
  NY627253  Penstemon neotericus K. A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mountain, along CA 36, ca. 1 mile east of jct. CA A21 on east side of Westwood. 1524.0 Comment
  NY627261  Penstemon neotericus F. W. Pennell 1940-7-23 26248 Lassen Route 36, 3 miles northwest of Westwood 1585.0 Comment
  CAS-BOT-BC239221  Penstemon newberryi var. berryi Clare B. Hardham 1969-8-28 17449 Lassen West of Janesville Comment
  NY627392  Penstemon newberryi var. newberryi R. M. Austin 08 1878 s.n. Lassen Mount Dyer Comment
  JEPS94531  Penstemon roezlii Vernon Oswald and Lowell Ahart 1997-6-24 8623 .1 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  NY650107  Penstemon roezlii A. J. Cronquist 1959-6-18 8483 Lassen 5 miles south of Adin Comment
  UC887288  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen e Fredonyer Pass; e of Fredonyer Pass 1645 Comment
  NY641729  Penstemon roezlii A. J. Cronquist 1959-6-17 8470 Lassen 50 miles southeast of Susanville. 1371.6 Comment
  CAS-BOT-BC239496  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen .5 mi. north of turnoff to Heir [Herlong], Hwy 395, between Milford and Doyle 1280 Comment
  CAS-BOT-BC239497  Penstemon rydbergii var. oreocharis Louella Bass 1973-5-29 EV 50 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC239504  Penstemon rydbergii var. oreocharis Louella Bass 1973-6-6 EV 100 Lassen Elysian Valley 1325 Comment
  CHSC12939  Penstemon rydbergii var. oreocharis K. R. Stern 1974-6-26 5869 Lassen E end of Champs flat. Comment
  CHSC1878  Penstemon rydbergii var. oreocharis K. Chew 1954-7-6 Lassen Along Pine Creek, 1 mi. below Stephens meadows. 1828 Comment
  CHSC30583  Penstemon rydbergii var. oreocharis Leonard Walk 1972-6-29 48 Lassen Dean's Meadow on S. side of pond. 1981 Comment
  CHSC37348  Penstemon rydbergii var. oreocharis Cindy Prouty 1978-7-5 14 Lassen E shore of Mohagany L., S of Eagle L. 2060 Comment
  POM252930  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 3 miles east of Westwood. Comment
  UC696713  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen about 4 mi e Westwood; e of Westwood 1432 Comment
  UCD39133  Penstemon rydbergii var. oreocharis Beecher Crampton 1964-6-26 7081 Lassen 32 miles n.w. Susanville east end of Harvey Valley. 1694 Comment
  UCSB6193  Penstemon rydbergii var. oreocharis Heller, A. 1938-6-23 Lassen East of Westwood 1493 Comment
  SBBG128900  Penstemon rydbergii var. oreocharis L. Ahart, J. Dittes 2008-6-20 14919 Lassen ca. 100 yards SW of where the levee rd crosses Big Valley Canal in Big Valley, ca. 4 mi (air) NE of Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CHSC12411  Penstemon speciosus Lynn R. Thomas 1969-6-20 135 Lassen Just above Deans Meadow, ca. 6 mi. s of E. L. B. S. 2011 Comment
  CHSC13894  Penstemon speciosus L. E. Ray 1967-6-24 33 Lassen Collected ca. 3 mi. se ELBS, above Upper Murrer Meadow. 1524 Comment
  CHSC4438  Penstemon speciosus K. R. Stern 1967-6-30 2449 Lassen West Central side of Eagle Lake. 1554 Comment
  HSC63768  Penstemon speciosus Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N tip of Eagle Lake 1768 Comment
  JEPS28986  Penstemon speciosus Frances D. Payne 1929-7-12 86 Lassen ridge above Lost Lake (southern end Warner Range); , ridge above Lost Lake 2286 Comment
  NY660816  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen Southwest slopes of Cold Springs Mountain 1890 Comment
  POM195125  Penstemon speciosus D. D. Keck 1930-7-23 950 Lassen Susanville. 1280 Comment
  SBBG26872  Penstemon speciosus D. D. Keck 1930-7-23 50 Lassen Susanville 1280 Comment
  CDA33279  Penstemon speciosus T. C. Fuller 1963-6-11 10665 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  NY660820  Penstemon speciosus H. D. D. Ripley 1943-6-13 5672 Lassen South of Constantia 1463.0 Comment
  RSA401877  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi north of jct with Route 24, northeast of Plumas. 1524 Comment
  SBBG54516  Penstemon speciosus F. W. Pennell 1940-7-23 26254 Lassen 2 mi N of jct with St Hwy 24, NE of Plumas Comment
  NY661060  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats) southeastern Lassen County. 1493.5 Comment
  NY661061  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 950 Lassen Susanville 1280.2 Comment
  CAS-BOT-BC243415  Penstemon sudans John Thomas Howell 1934-6-10 11880 Lassen 12 miles N of Susanville on road to Horse Lake Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  NY661797  Penstemon sudans G. W. Gillett 1953-7-13 274 Lassen Fredonyer Pass, Highway 36. One mile east of pass. 1706.9 Comment
  NY661808  Penstemon sudans D. D. Keck 1935-6-25 3756 Lassen Susanville; just west of town Comment
  UC1012466  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36 w Susanville; w of Susanville 1371 Comment
  RSA0029641  Penstemon sudans Anthony Baniaga, R. Bomberger 2011-7-28 478 Lassen Lassen National Forest. Highway 36, ca. 1/4 mile E of 'Fredonyer Pass Winter OHV Parking Lot.' 1950 Comment
  SEINET5323639 Image available Penstemon sudans J. T. Howell, Gordon H. True 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1585 Comment
  CDA26041  Peraphyllum ramosissimum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20382 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  NY1102214  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 miles north of Wendel Road 1494 Comment
  UC1137777  Perideridia bolanderi subsp. bolanderi George A. Fischer and Irwin H. Johnson 1933-7-12 F 210 Lassen Grass Valley Lassen National Forest 1722 Comment
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  CHSC29870  Perideridia oregana Robin L. Ondricek 1978-7-15 103 Lassen .6 mi e of jct. with main road to ELFS on road to Murrers Upper Meadow. 1554 Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  OBI48093  Peritoma platycarpa Rhonda Riggins 1989-4-27 1638 Lassen Wash through volcanic boulder pavement, US395, 8.4 mi N. Litchfield, 26.6 mi S Rav endale 1311 Comment
  JEPS17754  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5429 Lassen along Smoke Creek Ranch rd 8 mi e U.S. Hwy. 395 (se part of valley); Secret Valley 1402 Comment
  POM252966  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  POM72872  Phacelia adenophora C. C. Bruce 1898-06 2198 Lassen Madeline Plains. Comment
  CDA40418  Phacelia hastata J. T. Howell 1934-7-8 12480 Lassen Champ s Flat. 0 Comment
  JEPS107806  Phacelia hastata subsp. compacta Lowell Ahart, John Dittes 2005-6-2 11950 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction 1498 Comment
  CHSC29888  Phacelia hastata subsp. hastata Robin L. Ondricek 1978-8-9 121 Lassen 0.1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  JEPS107814  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
  CHSC28594  Phacelia humilis M. S. Taylor 1974-7-9 266 Lassen Scattered ca 3 ft e side of Whitehead Rd, ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. Comment
  NY1057846  Phacelia humilis N. H. Holmgren 1980-7-4 9511 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  SEINET5536709  Phacelia humilis N. H. Holmgren, P. K. Holmgren 1978-6-11 8908 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  UC773945  Phacelia humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  CHSC4813  Phacelia linearis R. Carter 1967-7-7 576 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  CHSC67059  Phacelia linearis Willis Ball 1969-6-28 55 Lassen Found on E.L.B.S. in dry basaltic soil. 1554 Comment
  NY998462  Phacelia linearis N. H. Holmgren 1980-7-4 9501 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  UCR80208  Phacelia linearis J. T. Howell 1934-6-10 11901 Lassen 3 mi. south of Ravendale. 1638 Comment
  RSA337277  Phacelia lutea Noel Holmgren, Patricia K. Holmgren 1980-7-3 9473 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
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  NY1056438  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale 1341 Comment
  CHSC23109  Phacelia ramosissima Robert A. Schlising 1974-6-25 3149 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station; basaltic rocks from Black Mt. lava flow near Bly Tunnel. Comment
  CHSC29886  Phacelia ramosissima var. eremophila Robin L. Ondricek 1978-8-2 109 Lassen In moss covered basalt on top of the ridge se of ELFS. 1609 Comment
  CAS-BOT-BC141447  Phacelia ramosissima var. eremophila H. D. Ripley; R. C. Barneby 1943-6-13 5691 Lassen Milford 1264 Comment
  RSA722687  Phacelia ramosissima var. ramosissima R. R. Halse 2006-8-3 6990 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  RSA370317  Phacelia tetramera Arnold Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  SEINET3091893 Image available Phacelia tetramera Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  CHSC64879  Phacelia thermalis Vernon H. Oswald; Lowell Ahart 1995-6-19 6902 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395. 1444 Comment
  RSA334843  Phacelia thermalis Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8595 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  CAS-BOT-BC265823  Phalaris arundinacea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49500 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  UC1037092  Phleum pratense Leo Whitney 1933-7-1 2214 Lassen ca 15 mi w Eagle Lake (Crater Mountain); Lassen National Forest, w of Eagle Lake, Crater Mountain 2225 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
  UC106950  Phlox diffusa T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS91153  Phlox douglasii subsp. rigida Dean W. Taylor 1974-6-14 3715 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC1137642  Phlox douglasii subsp. rigida A. Simontacchi 1940-5-13 701 Lassen 4.1 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1981 Comment
  UC1137650  Phlox douglasii subsp. rigida A. Simontacchi 1940-5-17 744 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC972192  Phlox gracilis Milo S. Baker 1952-5-23 12414 Lassen e of Chester (Hwy 36) Comment
  OBI77067  Phlox hoodii subsp. canescens Anthony Baniaga 2011-6-7 311 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
  RSA715614  Phlox speciosa subsp. occidentalis L. Ahart, John Dittes 2005-6-1 11846 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  CHSC59785  Phlox stansburyi Mary Meyer 1980-5-21 Lassen Long Canyon, south of reservoir. 1645 Comment
  CHSC7764  Phlox stansburyi Beverley J. Wise 1969-4-10 93 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCD118472  Phlox stansburyi var. brevifolia Grady L. Webster 1989-5-13 7716 Lassen 2.5 mi E of Beckworth Pass. Comment
  UC585228  Phoenicaulis cheiranthoides E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1758 Lassen nw side of summit e of Red Rock 1828 Comment
  CAS-BOT-BC250985  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia Comment
  UC21954  Phyllodoce breweri M. S. Baker and Frank Nutting 1894-7-20 Lassen Silver Lake Comment
  CHSC23508  Pinus jeffreyi Wayne O. Baum 1971-7-16 71 -74 Lassen E. slope of Gallatin Peak. 2072 Comment
  RSA518540  Pinus ponderosa George K. Helmkamp 1990-10-4 12 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  SJSU8053  Plagiobothrys cognatus R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline Comment
  CHSC117547  Plagiobothrys cusickii Lowell Ahart; John Dittes 2016-7-13 21114 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the northern slope of Big Valley. 1289 Comment
  JEPS114769  Plagiobothrys cusickii Lowell Ahart, John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS119643  Plagiobothrys cusickii Lowell Ahart, John Dittes 2012-7-9 18284 -A Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0039528  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SBBG128883  Plagiobothrys cusickii L. Ahart, J. Dittes 2008-6-20 14914 Lassen vernal pool, ca. 100 yards SW 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
  SJSU8035  Plagiobothrys cusickii J. W. Tilden 1960-6-27 1518 Lassen 5 mi E of Westwood by Moonlight Rd 1524 Comment
  CHSC115562  Plagiobothrys hispidulus Lowell Ahart; John Dittes 2015-7-13 20318 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60726  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1993-6-14 5510 Lassen Junction of Lassen A1 (Eagle Lake Rd.) with Lassen A21 (32N02), ca. 3 mi (air) W of Eagle Lake. Roadside depression. 1813 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
  CHSC93687  Plagiobothrys kingii var. harknessii Lowell Ahart; John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  JEPS107963  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  UC1609123  Plagiobothrys kingii var. harknessii Vernon H. Oswald and Lowell Ahart 1993-6-14 5538 Lassen n side Eagle Lake Road (Lassen A1) at Sandy Beach Road (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  CHSC71078  Plagiobothrys leptocladus Vernon H. Oswald; Lowell Ahart 1998-5-22 9099 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. On the bed of a vernal pool. 1316 Comment
  UC1537689  Plagiobothrys leptocladus Gordon H. True Jr. 1936-6-25 522 Lassen Honey Lake Valley 1219 Comment
  RSA337274  Plagiobothrys scouleri Noel Holmgren, Patricia K. Holmgren 1980-7-3 9476 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  UC1567370  Plagiobothrys stipitatus var. micranthus G. Schoolcraft 1989-7-24 1991 Lassen Said Valley Reservoir Said Valley 1630 Comment
  CHSC117209  Plagiobothrys tenellus Lowell Ahart; John Dittes 2016-6-7 21006 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS90082  Plagiobothrys tenellus Dean Wm. Taylor with Robert A. Price 1988-6-4 9766 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. watershed, Fall R. Valley 1036 Comment
  RSA0017432  Plantago lanceolata Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCD124605  Plantago lanceolata P. B. Schultz 1967-7-11 70 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  CHSC12416  Platanthera Anne Linda Brisk 1969-6-26 23 Lassen 7.2 mi SW of ELBS. 1584 Comment
  CAS-BOT-BC136632  Platanthera A. M. Vollmer; L. Beane 1953-7-1 74 Lassen Field redacted by CAS, contact the data manager for more information 1554 Comment
  CAS-BOT-BC326713  Pleiacanthus spinosus Gordon H. True 1973-8-22 7658 Lassen North shore of Honey Lake ca. 5 miles east of Janesville and just west of Hartson Reservoir Comment
  CHSC50824  Pleiacanthus spinosus Vernon Oswald; Lowell Ahart 1990-7-25 4395 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. Roadside bank. 1463 Comment
  CHSC7736  Pleiacanthus spinosus Beverley J. Wise 1969-5-23 79 Lassen 33.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  JEPS36547  Pleiacanthus spinosus W. L. Jepson 1918-8-2 7790 Lassen Long Valley 1371 Comment
  RSA273386  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
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May 9 2012
  UCD92172  Poa A. A. Beetle 1941-6-28 2815 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  JEPS117621  Poa compressa Lowell Ahart, John Dittes 2010-7-31 16992 Lassen On the bottom of a small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1024877  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (Ash Creek) Comment
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Jun 24 2009
  CHSC77269  Poa cusickii subsp. cusickii G. Schoolcraft 1994-7-7 2351 Lassen About 1.5 miles NE of Red Rock Lake. 2042 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
  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
  JEPS127715  Poa secunda Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -170 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  POM180946  Poa secunda P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia. Comment
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Jan 6 2015
  POM267991  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  UC1951068  Poa secunda Debra Valov 2009-4-26 2009024 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CAS-BOT-BC236258  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 miles E of Westwood on road to Fredonyer Pass 1584 Comment
  CAS-BOT-BC247052  Poa secunda subsp. juncifolia Ralph K. Gierisch 1968-7-11 3352 Lassen Lassen National Forest, Harvey Valley - Dixie Spr. 1706 Comment
  SEINET7294034 Image available Poa secunda subsp. juncifolia John Thomas Howell, Gordon H. True; Margaret Williams 1973-1 49460 Lassen Elysian Valley, W of Janesville 1326 Comment
  UC1024912  Poa secunda subsp. juncifolia Leo Whitney 1935-6-26 3370 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024938  Poa secunda subsp. juncifolia Leo Whitney 1935-6-26 3336 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132872  Poa secunda subsp. juncifolia A. Simontacchi 1940-5-13 704 Lassen 2.2 mi n of B. M. 6680 on Cone Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1136986  Poa secunda subsp. juncifolia L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experimental Range; Lassen Forest 1798 Comment
  UC1143013  Poa secunda subsp. juncifolia August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mt; Lassen Nat'l Forest 1706 Comment
  UC1776716  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2348 Lassen About 1.5 miles NE of Red Rock Lake 2042 Comment
  UCD92428  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 3370 Lassen Lassen National Forest. Near Fruit Grower's Supply Co., Camp 10. Comment
  UCD92432  Poa secunda subsp. juncifolia L. Whitney 1935-6-23 3289 Lassen Lassen National Forest. Near Fruit Grower's Supply Co., Camp 10. Comment
  SEINET7294025 Image available Poa secunda subsp. juncifolia Leo Whitney 1935-1 3259 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC27574  Poa secunda subsp. secunda Robert Schlising 1978-7-1 3306 Lassen S of Eagle Lake near Mahogany Lake. 2060 Comment
  RSA715613  Poa secunda subsp. secunda L. Ahart, John Dittes 2005-6-1 11845 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1024681  Poa secunda subsp. secunda Leo Whitney 1934-7-10 2165 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen Nat'l Forest, Harvey Valley 1737 Comment
  UC1024839  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3217 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024874  Poa secunda subsp. secunda Leo Whitney 1935-5-26 3151 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1136988  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 219 Lassen Lassen Nat'l Forest 1722 Comment
  UC1567404  Poa secunda subsp. secunda G. Schoolcraft 1989-7-18 1975 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UC1143003  Poa wheeleri August L. Hormay 1934-5-14 Lassen between Dixie Ranger Station and Patterson Flat; Lassen Nat'l Forest 1767 Comment
  CHSC67263  Polemonium micranthum James D. Jokerst 1991-5-29 3312 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 drainage. 1584 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
  RSA0036995  Polemonium micranthum Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18743 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC263248  Polemonium pulcherrimum var. pulcherrimum R. Stubbs 2010-8-9 019 Lassen Dixie Mountain Peak Lookout. Only seen down trail from lookout towards bathroom on the south slope 2516 Comment
  CHSC59703  Polyctenium fremontii Teresa Prendusi; Mary Meyer 1980-5-16 Lassen 1615 Comment
  JEPS13801  Polyctenium fremontii Dr. Loughridge 1912-1 Lassen Madeline Plains Comment
  CHSC68619  Polyctenium fremontii var. fremontii Vernon H. Oswald; Lowell Ahart 1997-5-7 8405 Lassen Mud Flat along Smoke Creek Ranch Rd. 1.7 mi east of Hwy. 395. 1356 Comment
  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
  CAS-BOT-BC419769  Polygonum argyrocoleon G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC. Comment
  UC465777  Polygonum californicum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UCD33604  Polygonum californicum Beecher Crampton 1970-6-26 8637 b Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  CAS-BOT-BC414489  Polygonum douglasii Clare B. Hardham 1969-8-28 17432 A Lassen West of Janesville 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
  UC1553395  Polygonum douglasii subsp. spergulariiforme G. Schoolcraft 1988-6-15 1814 Lassen 16 mi e Adin; Ash Valley RNA/AEC 1584 Comment
  RSA0011553  Polygonum esotericum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46999 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 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
  POM104446  Polygonum persicaria Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1101117  Polygonum persicaria Malcolm A. Nobs and S. Galen Smith 1949-8-20 1472 Lassen 1 mi s Milford; Honey Lake Valley Comment
  CHSC110776  Polygonum polygaloides subsp. confertiflorum Dean Wm. Taylor 2012-7-18 21278 Lassen Cascade Ranges. Windmill Flat tributary Juniper Creek, Pit River Watershed, 11 miles S of Adin). 1706 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
  JEPS28647  Polygonum polygaloides subsp. confertiflorum George W. Gillett 1957-7-22 874 Lassen near s shore of Snag Lake, Lassen Volcanic National Park Snag Lake Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  CHSC27120  Polygonum polygaloides subsp. kelloggii Robert A. Schlising 1978-6-29 3297 Lassen E of Eagle Lake; dry creek bed just N of Murrers Meadow and Spring. In area of Pinus jeffreyi forest. 1536 Comment
  JEPS51287  Polygonum polygaloides subsp. kelloggii Brown and Wieslander 1922-7-30 48 Lassen Martin Sprs. Eagle Lake Comment
  UCD100647  Polygonum ramosissimum Verne Grant; Irving Schneider 1947-8-1 8227 Lassen Southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  CAS-BOT-BC420145  Polygonum ramosissimum subsp. ramosissimum John Thomas Howell 1934-7-8 12501 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC420163  Polygonum sawatchense subsp. sawatchense John Thomas Howell 1934-6-14 12148 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CDA22787  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. Comment
  HSC82252  Polygonum spergulariiforme Thomas W. Nelson, Jane P. Nelson 1980-7-6 6009 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  HSC97193  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy. 36, 1/4 mi. SW of the Susan River, 8 air mi. SW of Susanville 1434 Comment
  CAS-BOT-BC232546  Polypogon monspeliensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16346 Lassen Along margin of drainage gulley below reservoir, N of road 13.5 miles E of Susanville Comment
  CAS-BOT-BC232547  Polypogon monspeliensis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile W of Karlo Comment
  UC1100378  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1478 Lassen 1 mi n Doyle (Honey Lake Valley, marshy banks of Long Creek); Honey Lake Valley, banks of Long Creek Comment
  SEINET10885945  Populus tremuloides Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 141 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 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
  JEPS96122  Porterella carnosula Vernon H. Oswald and Lowell Ahart 1996-6-24 7854 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), w side Papoose Meadows, ca 0.3 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  SEINET10460819  Porterella carnosula G. Ledyard Stebbins 1949-8-6 Stebbins 4002 Lassen Edge of Feather Lake, between Susanville and McArthur. Mud flats 1676 Comment
  SEINET10460831  Porterella carnosula Gillett 1957-7-29 GILLETT 938 Lassen Marsh area near west end of lake, on drying mud flats 2073 Comment
  UC1099904  Potamogeton amplifolius Verne Grant, Irving Schneider 1947-8-24 8269 Lassen nw shore of Blue Lake (northern Lassen County) Comment
  UCD138215  Potamogeton amplifolius Verne Grant; Irving Schneider Date Unknown 8269 Lassen northern part of county. Northwest shore of Blue Lake. 1981 Comment
  CHSC117537  Potamogeton diversifolius Lowell Ahart; John Dittes 2017-7-13 21149 Lassen Southwest part of pond, 150 yares 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
  HSC95292  Potamogeton foliosus Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 692 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET9336258  Potamogeton foliosus Unknown 2007-7-25 Lassen 6 mi S of Bieber in Big Valley. Robin Harbert's wild rice field. Weed. Common name: leafy pondweed. Comment
  CHSC65369  Potamogeton foliosus var. foliosus Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7219 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  JEPS103228  Potamogeton illinoensis G. Schoolcraft 1996-9-11 2562 Lassen Willow Creek below petroglyphs and above dam 1432 Comment
  OBI82315  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  UC1536817  Potamogeton striatus Gordon H. True Jr. 1939-7-6 1006 Lassen Honey Lake Valley, Hartson Lake Comment
  UC60851  Potamogeton striatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3357 Lassen marsh near Amedee; Honey Lake Valley Comment
  POM118839  Potamogeton zosteriformis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC27741  Potentilla glandulosa subsp. ashlandica Cindy Prouty 1978-7-5 3 Lassen E shore of Mahogany L., S of Eagle L. Meadow. 2060 Comment
  CAS-BOT-BC141633  Potentilla gracilis var. elmeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49452 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  SEINET6637685  Potentilla gracilis var. fastigiata C. G. Gulling 1905-1 1529 Lassen Big Meadows Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  UCR67033  Potentilla rivalis George K. Helmkamp 1990-10-4 M- 3 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  NY833598  Potentilla rivalis var. millegrana G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1646 Comment
  CHSC105253  Poteridium annuum Lowell Ahart; John Dittes 2010-7-31 17003 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  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
  SDSU9858  Primula tetrandra D. F. Howe 1964-7-31 3899 Lassen Warner Mtns. Modoc National Forest. 1890 Comment
  JEPS62498  Prunella vulgaris var. lanceolata Brown and Wieslander 1922-7-30 23 Lassen Martin Sprs Eagle Lake; , Martin Sprs Comment
  CHSC35955  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
  RSA60357  Prunus andersonii E. K. Balls 1950-5-9 15947 Lassen 6 miles south of Doyle, Hwy 395. 1372 Comment
  UC1128502  Prunus emarginata A. Simontacchi 1940-6-4 799 Lassen 7.1 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1836 Comment
  CAS-BOT-BC154774  Prunus virginiana var. demissa Louella Bass 1973-5-25 38 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC239802  Pseudoroegneria spicata John Thomas Howell 1976-7-20 52002 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC239806  Pseudoroegneria spicata James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 mi. ssw. of Karlo 1417 Comment
  UCD91489  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3016 Lassen 3 miles south of Horse Lake. Comment
  UC188856  Pseudoroegneria spicata subsp. spicata Milo S. Baker Lassen s side of Dixie Valley Dixie Valley Comment
  UC1136876  Pseudostellaria jamesiana L. R. Short and Wm. Gansberg 1936-6-16 S- 438 Lassen Burgess Spring Experimental Range; Lassen Forest 1883 Comment
  CAS-BOT-BC80092  Pseudotsuga menziesii John Thomas Howell 1976-7-19 51965 Lassen on Gold Run Creek southwest of Susanville 1386 Comment
  CHSC27600  Psilocarphus brevissimus var. brevissimus J. D. Prouty 1978-6-28 4 Lassen Lower Dry Lakes, SE of Eagle L. Comment
  SJSU10070  Psilocarphus tenellus L. Hooker 1965-7-12 Lassen by Hwy 139 c. 8.3 mi NE of Susanville 1645 Comment
  CHSC99273  Psilocarphus tenellus var. tenellus Lowell Ahart; John Dittes 2008-6-22 15029 Lassen About 120 yards west of the road levee, on the bottom 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
  CDA27774  Psoralidium lanceolatum S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  RSA32005  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles E of Westwood 1524 Comment
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  HSC68918  Pterospora andromedea Gary Schoolcraft 1980-7-28 339 Lassen N of Clark's Valley 2073 Comment
  SEINET3823221 Image available Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles east of Westwood in leaf mold. Transition Life Zone 1524 Comment
  POM313139  Puccinellia distans Malcolm A. Nobs, S. Galen Smith 1949-7-22 1070 Lassen Northeast shore of Eagle Lake Comment
  SACT002065  Puccinellia distans Malcolm Nobs, Galen Smith 1949-7-22 Lassen Growing in wet mud, on drying shore, alkaline. Northeast shore of Eagle Lake Comment
  CHSC93243  Puccinellia lemmonii John Dittes; Scott Chamberlain 2004-6-28 1015 Lassen Modoc Plateau; Long Valley; ca. 2.2 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. 1445 Comment
  JEPS120925  Puccinellia lemmonii Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen In a depression on the S side of the road, on the S side of the McArthur Diversion Canal, 0.32 miles E of the Tule River, 2.8 air miles NW of McArthur, Fall River Valley, McArthur Swamp. Comment
  SEINET4890224  Puccinellia lemmonii N. H. Holmgren, P. Holmgren 1978-6-13 8939 Lassen 2.7 km (1.7mi) north-west of Wendel. 1250 Comment
  CDA32668  Puccinellia nuttalliana M. D. Collins Jun 1923 Lassen Edge of Honey Lake 0 Comment
  CHSC25129  Purshia tridentata Paul Lyman 1970-5-2 29 Lassen Bald Mountain; Janesville. On south slope of Bald Mountain, 10 miles East of Susanville. Comment
  CAS-BOT-BC147816  Purshia tridentata var. tridentata Doris Kildale Gillespie 1930-5-12 9321 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC147817  Purshia tridentata var. tridentata Clarence R. Quick 1961-6-21 61 -33 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC147824  Purshia tridentata var. tridentata M. S. Taylor 1982-5-7 4431 Lassen Reno Junction on Hwy 70, just e of Beckwourth Pass 1524 Comment
  CHSC105257  Purshia tridentata var. tridentata Lowell Ahart; John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  JEPS95171  Purshia tridentata var. tridentata Vernon H. Oswald and Lowell Ahart 1996-6-17 7769 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Highway 36, along the trail on n side of Highway 36 0.2 mi e of 7 Mile Post); Modoc Plateau, Bizz Johnson Trail 1432 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
  RSA152670  Purshia tridentata var. tridentata Dorothy Wiggins 1961-6-10 16321 Lassen Along California Highway 36. ABout 6 miles W of Susanville. Comment
  UC467830  Purshia tridentata var. tridentata Franklin P. Nutting Lassen Pine Creek Comment
  CAS-BOT-BC462880  Pyrola asarifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 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
  CAS-BOT-BC362266  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CAS-BOT-BC362262  Pyrrocoma carthamoides var. cusickii Clarence R. Quick 1964-7-29 64 -91 Lassen Blacks Mt. Experimental Forest 1798 Comment
  JEPS19176  Pyrrocoma hirta var. lanulosa Leland S. Smith 1922-1 18 Lassen Windmill flat, nw Lassen County Modoc National Forest Comment
  POM39970  Pyrrocoma lanceolata Marcus E. Jones 1897-6-30 s.n. Lassen Ranch below Eagle Lake. Susanville, 4 miles. 1524 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
  CAS-BOT-BC362321  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee, Honey Lake Valley Comment
  UC1192231  Pyrrocoma racemosa var. paniculata Verne Grant and Irving Schneider 1947-9-6 8392 Lassen near Wendel (w of Fleming Rach Headquarters) Comment
  CAS-BOT-BC105245  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles W of Susanville 1371 Comment
  UCD46633  Quercus kelloggii John Thomas Howell; Gordon H. True 1973-5-12 49159 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UCD46640  Quercus kelloggii Annie M. Alexander; Louise Kellogg 1946-8-14 5158 Lassen On hill back of town. Susanville. Comment
  UCR67040  Quercus kelloggii George K. Helmkamp 1990-10-4 M- 8 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  JEPS28456  Ranunculus alismifolius var. alismellus George W. Gillett 1957-6-21 869 Lassen meadow 300 yd n Juniper Lake-Cameron Meadow trail summit; Lassen Volcanic National Park 2118 Comment
  CHSC71322  Ranunculus alismifolius var. davisii Vernon H. Oswald 1998-6-22 9230 Lassen Champs Flat Rd. (A-21) 1.8 mi north of Hwy. 44, ca. 18 air mi north of Westwood. 1749 Comment
  SD8208  Ranunculus aquatilis Mrs. R. M. Austin 1882-8-7 Lassen Hot Spring Valley Comment
  CHSC27662  Ranunculus cymbalaria var. saximontanus Robert A. Schlising 1978-7-27 3320 Lassen E side of Eagle Lake. Pasture. Comment
  UC1537331  Ranunculus cymbalaria var. saximontanus Gordon H. True Jr. 1936-6-26 544 Lassen Honey Lake Valley-Willow Creek Valley Road 1524 Comment
  UC1025100  Ranunculus flammula Leo Whitney 1934-8-5 1800 Lassen 16 mi nw Westwood; Lassen National Forest, Caribou Lake 2194 Comment
  UC1191440  Ranunculus flammula Verne Grant and Irving Schneider 1947-8-24 8267 Lassen Blue Lake; nw shore, n Lassen Co. 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
  HSC69071  Ranunculus glaberrimus Gary Schoolcraft 1979-4-3 4 Lassen N of Skedaddle Ranch along main rd. 1555 Comment
  UC1136880  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spr. Exp. Range Lassen National Forest 1737 Comment
  JEPS60696  Ranunculus occidentalis Frances D. Payne 1929-7-12 99 A Lassen Upper Silver Creek; ne Lassen Co. Comment
  UC1126216  Ranunculus occidentalis A. Simontacchi 1940-6-13 850 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1126218  Ranunculus occidentalis K. E. Bradshaw 1939-5-27 242 Lassen Black Mountain Experimental Forest Lassen National Forest, Halls Flat Quadrangle (Plot 39-4) Comment
  UC118171  Ranunculus occidentalis T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC106217  Ranunculus occidentalis var. occidentalis Arthur C. Barrett 1915-6-3 15 Lassen Plumas National Forest. Laufman Ranger Station. 1463 Comment
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Jun 16 2012
  POM312416  Ranunculus sceleratus Malcolm A. Nobs, S. Galen Smith 1949-7-21 1050 Lassen Small marshy creek, 1 mile E of Maderline, Comment
  CDA3487  Ranunculus testiculatus Lee Wheeler 1963-3-29 Lassen County fairgrounds, Susanville. 0 Comment
  UCD97133  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen Susanville, county fairgrounds. Comment
  CHSC44887  Ratibida columnifera Lowell Ahart; John Thomas Howell 1974-7-9 513 Lassen Near the south-west side of Eagle Lake. 1584 Comment
  JEPS82976  Ratibida columnifera G. D. Barbe 1974-8-20 1939 Lassen in dry gravelly cleared area at n end Glenn-Eagle airstrip (sw corner of lake, 0.8 mi n of Eagle Lake Resort); Eagle Lake 1554 Comment
  JEPS127350  Rhaponticum repens Lowell Ahart, John Dittes 2016-7-13 21103 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
  UC579615  Rhaponticum repens E. Sawyer 1935-6-27 239 Lassen 5 mi ne Beckwith Pass; Sierraville Quad. 1463 Comment
  SEINET5845254  Ribes C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  SEINET10871347  Ribes Mary Susan Taylor 1974-5-4 Taylor 223 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
  CHSC21360  Ribes cereum M. S. Taylor 1974-5-4 219 Lassen Scattered ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  UC747359  Ribes cereum G. Thomas Robbins 1945-10-6 2149 Lassen summit Crater Lake Mt. (above lake); Lassen National Forest 2194 Comment
  CHSC84861  Ribes cereum var. cereum L. P. Janeway; B. Castro 2003-10-5 8003 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  HSC95270  Ribes inerme var. inerme Gordon Leppig 1998-7-12 947 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  NY455349  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 miles east of Fredonyer Pass 1706.9 Comment
  UC1127641  Ribes roezlii A. Simontacchi 1940-6-4 723 Lassen 6.8 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1587075  Ribes roezlii G. Schoolcraft 1991-7-30 2191 Lassen n side Widow Mountain (Bear Spring) 1780 Comment
  HSC20364  Ribes velutinum L. H. Myers 1963-4-6 37 Lassen 1.0 mi. S of Janesville 1280 Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 Comment
  CAS-BOT-BC173959  Ribes viscosissimum John Thomas Howell; Gordon H. True 1973-8-1 50247 Lassen Gold Run Creek road south of Susanville. Diamond Range 1950 Comment
  RSA0020889  Ribes viscosissimum K. M. Meyer, A. Townesmith 2007-7-23 151 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
  SEINET10684651  Ribes viscosissimum Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 151 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
  SD131593  Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen south side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from susanville to Alturas west of the highway 1385 Comment
  CAS-BOT-BC363013  Rigiopappus leptocladus Milo S. Baker 1894-7-1 s.n. Lassen S. side Dixey [Dixie] Mts. Comment
  SEINET10799165  Rigiopappus leptocladus Arnold J. Tiehm, Margaret J. Williams; Jan Nachlinger 1988-6-2 Tiehm 11700 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on Highway 395 from Susanvile to Alturas, west of the highway. 1387 Comment
  SEINET3148575  Rigiopappus leptocladus L. S. Rose 1940-6-11 40507 Lassen 8 mi W of Nubieber 1219 Comment
  CAS-BOT-BC74530  Rorippa curvisiliqua John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mountains. 2438 Comment
  CHSC84873  Rorippa curvisiliqua Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 354 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  UC10716  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-6-1 Lassen Dixey Mts. Comment
  UCD107036  Rorippa curvisiliqua Tim Kuhn 2006-7-18 11 Lassen Eagle Lake Ranger District. Comment
  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
  UC1126740  Rorippa nasturtium-aquaticum Robert W. Gardner 1937-6-16 G- 15 Lassen Burgess Spring Experimental Range Halls Flat Quad., Burgess Spring Experimental Range Comment
  JEPS121241  Rorippa palustris subsp. hispida Lowell Ahart, John Dittes 2013-7-22 18864 Lassen N margin of a duck field, about 100 yards E of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. 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
  UC1567407  Rorippa sinuata G. Schoolcraft 1989-6-6 1901 Lassen n end Secret Valley w Highway 395; n end Secret Valley 1350 Comment
  UCR17283  Rosa californica Frank C. Vasek 1975-7-11 750711- 22 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC7724  Rosa woodsii subsp. ultramontana Beverley J. Wise 1969-6-1 95 Lassen N.E. city limits of Susanville, Chestnut street at junction with Hwy 139. 1310 Comment
  SBBG3088  Rosa woodsii subsp. ultramontana H. and M. Dearing 1939-6-6 3562 Lassen Bieber Comment
  SDSU9232  Rosa woodsii var. ultramontana D. F. Howe 1964-8-1 3916 Lassen Prsnip Creek, Warner Mtns. Modoc National Forest. 1829 Comment
  POM90170  Rosa woodsii var. ultramontana Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  JEPS28684  Rubus leucodermis George W. Gillett 1957-7-26 914 Lassen e shore Butte Lake Lassen Volcanic National Park, Butte Lake 1844 Comment
  POM91623  Rubus parviflorus var. bifarius Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC117299  Rumex crispus Lowell Ahart; John Dittes 2016-7-13 21134 Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS121297  Rumex crispus Lowell Ahart 2013-7-22 18865 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC748311  Rumex crispus Annie M. Alexander and Louise Kellogg 1946-8-11 5151 Lassen Madeline Comment
  CAS-BOT-BC433244  Rumex crispus Margaret Williams 1974-7-27 74 -L-64 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  NY324109  Rumex lacustris M. S. Baker 1894-1 s.n. Lassen Silver Lake [according to annotation by Rech. f.] Comment
  SD64325  Rumex lacustris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on hwy #395 1676 Comment
  UCD101331  Rumex lacustris Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  UC1542940  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA Ash Valley 1554 Comment
  CHSC67689  Rumex salicifolius var. lacustris James D. Jokerst 1983-7-25 1891 Lassen Madeline Plains W of Termo. Comment
  UC6973  Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  CHSC99509  Rumex salicifolius var. triangulivalvis Lowell Ahart; John Dittes 2008-6-20 14930 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
  RSA0105589  Rumex triangulivalvis Lowell Ahart, John Dittes 2013-7-22 18867 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
  UCD150405  Rumex venosus William Anderson 1963-6-2 s.n. Lassen Honey Lake Refuge. Comment
  SEINET4176394  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  SEINET4176403  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  SEINET4176577  Rumex venosus M. J. Williams 1969-5-24 s.n. Lassen Near Doyle 1524 Comment
  CHSC5927  Sagittaria cuneata J. B. Kimsey 1946-6-17 Lassen Grasshopper Valley. 1624 Comment
  CHSC66737  Sagittaria cuneata Vernon H. Oswald; Lowell Ahart 1996-8-1 8107 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  UC935793  Sagittaria cuneata Calvin McMillan and Malcolm A. Nobs 1949-6-15 785 Lassen Nubieber Comment
  UCD138009  Sagittaria cuneata Calvin McMillan; Malcom A. Nobs 1949-6-17 799 Lassen Grass Lake, Highway 97. Comment
  CHSC65007  Salix eastwoodiae Vernon H. Oswald 1991-8-5 4803 Lassen Little Willow Lake located near the south boundary of the park, ca. 2.5 miles (air) south-southeast of Drakesbad. 1844 Comment
  NY188399  Salix eriocephala subsp. mackenzieana R. D. Dorn 1972-6-2 1492 Lassen Willow Creek, about 15 miles SSE of Adin 1524.0 Comment
  CAS-BOT-BC107958  Salix geyeriana John Thomas Howell 1976-7-20 s.n. Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass - Sierra Nevada 1432 Comment
  NY430479  Salix laevigata G. Schoolcraft 1994-8-2 2413 Lassen About 1.5 miles southwest of Boot Lake 2011.7 Comment
  CAS-BOT-BC128172  Salix lasiandra var. lasiandra John Thomas Howell 1976-7-20 52018 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass - Sierra Nevada 1432 Comment
  POM106677  Salix scouleriana Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CAS-BOT-BC176903  Salsola tragus Margaret Williams; Steven Williams 1974-7-26 74 -L-7 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CDA5749  Salvia aethiopis Margaret Bellue Jul 1949 Lassen Susanville. 0 Comment
  UC104453  Salvia aethiopis T. Brandegee 1892-6-30 Lassen streets of Susanville Comment
  CDA36802  Salvia aethiopis D. B. Joley 1976-6-16 1 Lassen Hwy. 139, ca. 3 miles north of Susanville. 0 Comment
  CAS-BOT-BC214312  Salvia dorrii var. pilosa P. Monnet 1915-7-1 815 Lassen Hot Springs Peak 182 Comment
  SEINET8018246  Salvia dorrii var. pilosa J. A. Young 1982-6-7 s.n. Lassen NE Lassen County, Redlands. 1676 Comment
  UC1136751  Sambucus mexicana L. R. Short and J. Warren 1936-7-28 S- 490 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  UCD137207  Sambucus nigra subsp. caerulea P. B. Schultz 1967-7-12 78 Lassen 14 miles southeast of Adin on State Highway 139. 1524 Comment
  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
  UCD127944  Sanicula bipinnatifida W. W. Robbins 1926-4-17 534 Lassen Grass Valley. Comment
  JEPS947  Sanicula tuberosa G. S. Crew, C. S. Robinson 6/1/1927-7/1/1927 12 Lassen near Westwood Junction (Lassen National Forest, Norval Flat, sw Lassen County); Lassen National Forest, Norval Flat 2051 Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC30601  Sarcobatus vermiculatus L. J. Dawson 1975-7-7 44 Lassen Ca. 500 yd e of Horselake. 1584 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
  RSA719709  Schoenoplectus pungens Michael A. Vincent, K. Levings 2006-7-29 12919 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  UC2120  Scirpus fluviatilis J. Burtt Davy Jun 17 1897-Jun 24 1897 3285 Lassen w end Honey Lake; Honey Lake Valley, w end Honey Lake Comment
  CAS-BOT-BC240002  Scribneria bolanderi Alice Eastwood; John Thomas Howell 1940-6-11 7974 Lassen Big Valley Mts. Comment
  SEINET13751284  Scrophularia desertorum N. H. Holmgren, P. K. Holmgren 1978-6-11 8922 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  UC767449  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  RSA165466  Scrophularia lanceolata Clare B. Hardham 1961-6-17 7531 a Lassen Rte 395 Alturas Susanville Road 1524 Comment
  SEINET8020059  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  GMDRC7735  Scutellaria nana J. M. Andre, G. Clifton 1993-6-1 33412 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  UC1609176  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-6-28 5595 Lassen e of Poison Lake (Harvey Valley Rd. (33N02), 2.0 mi n of Hwy 44, between Grays Valley and Harvey Valley); Harvey Valley Rd. 1734 Comment
  UC773951  Scutellaria nana L. R. Short, J. Warren 1936-6-23 S 445 Lassen Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1809 Comment
  SEINET13947829 Image available Scutellaria nana G. Schoolcraft 1986-1 1628 Lassen Ca 3 mi E of Hwy 395 on Hall Springs Road; 4700 ft alt., T32N, R16E, SEC32 1433 Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  UC1063252  Senecio aronicoides A. Simontacchi 1940-5-28 769 Lassen 9.3 mi nw Crater Lake; Halls Flat Quad. 1752 Comment
  UC1137766  Senecio aronicoides August L. Hormay 1934-5-15 Lassen 1.50 mi e Halls Flat; Lassen National Forest 1767 Comment
  UC1184060  Senecio aronicoides Jean Langenheim 1957-6-26 4372 Lassen ne part Said Valley Comment
  UC831880  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen w of Fredonyer Pass (on Highway 36) 1676 Comment
  CAS-BOT-BC363326  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen West of Fredonyer Pass 1676 Comment
  CHSC106074  Senecio canus Lowell Ahart; John Dittes 2010-7-31 16990 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC23475  Senecio clarkianus Wayne O. Baum 1971-7-14 71 -61 Lassen N. slope of Gallatin Peak. 2011 Comment
  CHSC114299  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 Lassen South of Adin; Hwy. 139 at Milepost 58. On both sides of the road. Comment
  CHSC60822  Senecio hydrophiloides Vernon H. Oswald; Lowell Ahart 1993-6-28 5600 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. Meadow. 1725 Comment
  CHSC58836  Senecio hydrophilus Vernon H. Oswald; Lowell Ahart 1992-7-16 5128 Lassen Feather Lake on the S side of 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. On the margin of the lake. 1749 Comment
  CHSC99108  Senecio hydrophilus Lowell Ahart; John Dittes 2008-6-20 14907 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  HSC63728  Senecio integerrimus Teresa Prendusi 1980-4-30 Lassen NE of Snowstorm Ranch near Kalo Rd., Ravendale; near railroad tracks 1585 Comment
  UCD135546  Senecio integerrimus Grady L. Webster 1989-5-13 7702 Lassen Butterfly Valley area. Aound 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  CHSC64759  Senecio integerrimus var. exaltatus Vernon H. Oswald 1995-6-7 6843 Lassen High Cascade Range. Hwy 36, 5.5 mi e of Westwood. Along the se edge of McKenzie Mdws., on the n side of the road. 1584 Comment
  OBI76934  Senecio integerrimus var. exaltatus Anthony Baniaga 2011-6-11 336 Lassen Lassen Natl forest. Along 105, W of Champs Flat. Champs Flat quad T33N R9E sec 27 NW of SW 1686 Comment
  UC1924243  Senecio integerrimus var. exaltatus Debra Valov 2004-6-8 2004241 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC363984  Senecio integerrimus var. major John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49176 Lassen Elysian Valley northwest of Janesville 1325 Comment
  UC579721  Sidalcea oregana subsp. oregana David D. Keck and J. Clausen 1935-6-24 3740 Lassen 2 mi s Ravendale; s of Ravendale 1464 Comment
  POM260877  Sidalcea oregana subsp. oregana Alice Eastwood, J. T. Howell 1940-6-11 7982 Lassen Big Valley Mountains. Comment
  SEINET8961229  Sidalcea oregana var. oregana A. Tiehm, J. Nachlinger 1988-1 11704 Lassen E side of Snowshoe Mountain, 18.1 road miles N of the Wendel road on Hwy 395 from Susanville to Alturas, W side of the highway. 1402 Comment
  CAS-BOT-BC384312  Silene bernardina Clarence R. Quick 1966-7-22 66 -52 Lassen Susanville-Pittville road, Blacks Mtn. Hdqts.; Halls Flat, 9 m. e. of Hat Creek 1706 Comment
  RSA438833  Silene bernardina Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  CAS-BOT-BC384309  Silene bernardina George W. Gillett 1957-7-28 928 Lassen Lassen Volcanic National Park. On trail to Widow Lake above junction with Snag Lake Trail at upper end of Butte Lake 1859 Comment
  CHSC5229  Silene douglasii J. B. Kimsey 1946-6-10 Lassen Eagle Lake. Pelican Point. 1584 Comment
  UC773919  Silene douglasii L. R. Short and D. Gish 1936-7-15 S- 487 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1743 Comment
  CAS-BOT-BC389554  Silene nuda Elmer I. Applegate 1923-9-30 4035 Lassen Constantia, Honey Lake Valley Comment
  CHSC36188  Silene nuda M. S. Taylor 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass. 1432 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
  CAS-BOT-BC389543  Silene nuda H. D. Ripley; R. C. Barneby 1943-6-13 5686 Lassen Milford 1264 Comment
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC21380  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  UC21381  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  CDA38566  Sium suave F. A. Taylor 1933-7-5 s.n. Lassen Bieber. 0 Comment
  CDA18276  Solanum triflorum G. D. Barbe 1974-8-2 1942 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA0086585  Solanum xanti Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  CAS-BOT-BC365368  Solidago elongata Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  CHSC92962  Solidago velutina subsp. californica L. P. Janeway 2005-8-27 8523 Lassen High Cascade Range. Along Road 22, 11.3 road km east of Little Valley; above Davis Creek. 1460 Comment
  JEPS97325  Solidago velutina subsp. californica Vernon H. Oswald 1995-8-21 7207 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC1776708  Solidago velutina subsp. sparsiflora G. Schoolcraft 1994-8-3 2416 Lassen About 1 mile S of Boot Lake 1889 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
  SEINET11170749  Sphenosciadium capitellatum C. G. Gulling 1905-1 1562 Lassen Big Meadows. Comment
  CAS-BOT-BC149626  Spiraea douglasii Lassen 1927 G. S. Crew 1927-7-24 87 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  CAS-BOT-BC149627  Spiraea douglasii B. C. Cain 1925-8-24 80 Lassen 1 mile below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  SEINET7707741  Spiraea douglasii C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  HSC95180  Spiranthes porrifolia Gordon Leppig, J. Cromwell 1997-7-27 603 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  SEINET3818362  Spiranthes romanzoffiana A. A. Heller 1938-1 Lassen Comment
  RSA746511  Stachys ajugoides var. rigida K. M. Meyer, A. Townesmith 2007-7-21 142 Lassen Lassen National Forest. CA, 1.3 mi. on road 110, off Hwy A21, 1821 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
  HSC25048  Stanleya viridiflora John Pratt 1970-7-2 46 Lassen 1220 Comment
  CHSC68859  Stellaria crispa Vernon Oswald; Lowell Ahart 1997-6-24 8610 Lassen South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SJSU8510  Stellaria longipes subsp. longipes J. W. Tilden 1960-6-27 1516 Lassen by Moonlight Rd c. 5 mi E of Westwood 1524 Comment
  CHSC99292  Stellaria longipes var. longipes Lowell Ahart; John Dittes 2008-6-20 14956 Lassen About 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC120067  Stellaria longipes var. longipes unknown 1892-6-23 Lassen Honey Lake Comment
  CHSC68737  Stenotus acaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8507 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. Between the road and a small creek paralleling the road on the north. 1560 Comment
  CAS-BOT-BC375594  Stephanomeria lactucina Clare B. Hardham 1971-8-22 18431 Lassen Diamond Mountain 2346 Comment
  HSC83372  Stephanomeria lactucina R. W. Becking 1987-7-29 Lassen Lassen National Forest, Caribou Wilderness, Gem Lake Comment
  UCR57502  Stephanomeria spinosa R. D. Goeden, Don W. Ricker 1989-8-22 890822- 10 Lassen Modoc Plateau, Horse Lake Road, just east of Hansen Road, SW of Ravendale 1567 Comment
  HSC22876  Stipa hymenoides John Pratt 1970-6-14 15 Lassen East of Janesville Comment
  SEINET10966883  Stipa thurberiana Paul Gallian, David B. Dunn 1971-6-2 Gallian 513 Lassen 6 mi. N. of Hallelujah jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash 1402 Comment
  OBI22293  Stipa webberi Robert F. Hoover 1940-9-29 4647 Lassen Pass between Shaffer Mt and Warren Peak 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
  CAS-BOT-BC61289  Streptanthus cordatus var. cordatus Alice Eastwood; John Thomas Howell 1940-6-15 8309 Lassen Willow Creek near Hayden Hill. Comment
  UCD138352  Stuckenia pectinata Verne Grant; Irving Schneider 1947-8-1 8244 Lassen East end of Tule Lake. Comment
  CAS-BOT-BC454187  Stuckenia striata Wm. Anderson 1960-6-16 s.n. Lassen Hartson Reservoir, Honey Lake Waterfowl Management Area Comment
  JEPS120473  Suaeda nigra L. P. Janeway, B. Castro 2012-7-2 10925 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. Comment
  JEPS95901  Suaeda occidentalis Lowell Ahart 1999-9-13 8211 A 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
  CHSC48447  Swertia albicaulis var. albicaulis Vernon Oswald 1986-5-28 2060 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  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
  UC1609461  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (at Aspen Well, n of Hwy 44, on the nw edge of Harvey Valley) 1725 Comment
  CHSC5252  Swertia albicaulis var. nitida L. Harman 1946-6-23 Lassen Eagle Lake. Roop mountain. 2133 Comment
  CAS-BOT-BC245874  Symphoricarpos rotundifolius T. S. Brandegee 1892-6-26 s.n. Lassen Milford Comment
  CHSC64841  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald 1995-6-26 6932 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 9.9 mi W of Madeline, ca 0.5 mi W of the reservoir at Fleming Sheep Camp and along the stream coming from the same. 1609 Comment
  CHSC5024  Symphoricarpos vaccinioides L. G. Bennett 1967-7-17 182 Lassen 20 yards from shore of Mahogany Lake, near entrance rd. 2060 Comment
  UCR18738  Symphoricarpos vaccinioides Frank C. Vasek 1975-7-11 750711- 26 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UC1561922  Symphyotrichum campestre Barbara Ertter 1987-7-25 7311 a Lassen 22 airmiles nw of Susanville; Pine Creek Valley 1737 Comment
  UCD136493  Symphyotrichum campestre Verne Grant; Irving Schneider 1947-7-31 8210 Lassen northeast quarter of George Williams section 19, Madeline Plain. Comment
  UC2027325  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen National Forest. Caribou Wilderness; N of Long Lake. Red Cinder quadrangle. Comment
  UC1523754  Symphyotrichum frondosum Gary Schoolcraft 1981-7-20 521 Lassen Said Valley Reservoir 1630 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
  UC1924205  Symphyotrichum spathulatum Debra Valov 2005-8-20 2005219 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UCD18966  Symphyotrichum spathulatum Raymond D. Ratliff 1965-8-5 46 Lassen Lassen National Forest, Gooch Valley Allotment, Mosquito Flat (Gooch V. 70-1). 1889 Comment
  RSA201220  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 s.n. Lassen Ca. 4 miles SE of Susanville. Comment
  SEINET230291  Taeniatherum caput-medusae A. Tiehm, J Young; R. Evans 1984-6-7 8597 Lassen NW side of Shaffer Mtn 9 airmi NNW of Litchfield 1387 Comment
  JEPS94121  Tamarix parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9096 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford Comment
  SEINET10617707  Taraxacum californicum David B. Dunn, Billy Joe Cox 1971-1 Lassen Comment
  CHSC91182  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
  JEPS31727  Taraxia tanacetifolia W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment