Search Results — 2000 specimen records retrieved (1602 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA19039  Abies concolor Mark Lubinski 2000-10-12 PDR 070105 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36. 0 Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  CHSC5191  Achillea millefolium J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek, Eagle Lake, Lassen Co., California. 1580 Comment
  HSC4553  Achillea millefolium M. T. Milligan 1964-7-16 136 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC1125421  Achillea millefolium A. Simontacchi 1940-6-13 826 Lassen 3.3 mi wsw Patterson Mtn.; Halls Flat Quad. 1752 Comment
  CAS-BOT-BC28649  Achillea millefolium Lassen 1927 G. S. Crew 1927-7-15 78 Lassen Lassen County 1725 Comment
  SD8826  Achillea millefolium R. M. Austin 1879-1 Lassen Boiling Lake, near Lassen Peak Comment
  CAS-BOT-BC260402  Achnatherum hymenoides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16335 Lassen 13.5 miles E of Susanville Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  RSA647518  Achnatherum hymenoides Marion P. Harthill 1972-6-16 777 Lassen Doyle 1372 Comment
  UC507005  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson F- 198 Lassen Grass Valley Lassen Forest 1696 Comment
  UCD50509  Achnatherum lemmonii R. Tofsrud 1947-7-1 243 Lassen Between Bieber and Nubieber. Comment
  SBBG115546  Achnatherum nevadense B. Crampton 1960-6-18 5729 Lassen S Warner Mts, ca. 1.25 mi N of Blue Lake, in vicinity of Blue Lake Ranch 1981 Comment
  CAS-BOT-BC216850  Achnatherum occidentale David D. Keck 1944-7-8 5451 Lassen 1.5 miles W of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  SEINET7593424 Image available Achnatherum occidentale John Thomas Howell 1934-1 12431 Lassen Hall's Flat Comment
  JEPS456  Achnatherum occidentale subsp. californicum G. S. Crew and C. S. Robinson 1927-6-25 29 Lassen near Westwood <Tet?>; Lassen Forest 1706 Comment
  UC773979  Achnatherum occidentale subsp. californicum L. R. Short and Wm. Gansberg 1936-6-2 S- 366 Lassen Burgess Spring Experiment Range Lassen Forest 1858 Comment
  UCD51065  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3288 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UC1133257  Achnatherum occidentale subsp. occidentale H. P. Hagge 1929-9-17 38 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  CAS-BOT-BC218616  Achnatherum occidentale subsp. pubescens Margaret Williams; Steven Williams 1974-7-26 74 -L-37 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  UC1024910  Achnatherum occidentale subsp. pubescens Leo Whitney 3372 a Lassen ca. 13 mi w of upper end of Eagle Lake (Ashurt Mountain); Ashurt Mountain Comment
  UCD32665  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD32668  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-6 2069 Lassen Lassen County, 1 mile east of Johnstonville, along US highway 1395. 1219 Comment
  CHSC80710  Achnatherum speciosum V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10034 Lassen Northeast of Doyle in the Fort Sage Mtns, trailhead to top of mountain from the end of a 4WD road. 1798 Comment
  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
  UCD34873  Achnatherum thurberianum Beecher Crampton 1964-6-27 7095 Lassen Lassen County, ca. 5 miles S.W. of Ravendale, BLM land. Comment
  CAS-BOT-BC217991  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  UCD32671  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  CHSC68867  Actaea rubra Vernon Oswald; Lowell Ahart 1997-6-24 8612 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
  SEINET4339237  Aegilops triuncialis G. Schoolcraft 1997-6-26 2603 Lassen 1.2 mile north of Susanville, west of Highway 395 1326 Comment
  CHSC21954  Agastache parvifolia Robert A. Schlising 1974-7-19 3152 Lassen SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station along dirt road. Comment
  UC1483882  Agastache parvifolia G. Schoolcraft 1979-9-3 193 Lassen on F.S. Road #16, 5-6 mi w Hwy 44 1950 Comment
  JEPS62630  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen w of Janesville; Sierra Nevada Comment
  UC1037267  Ageratina occidentalis Leo Whitney 1933-8-27 1797 Lassen 14 mi w Eagle Lake (Harvey Lookout); Lassen National Forest, Harvey Valley 2225 Comment
  UC29341  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long Valley Comment
  RSA715617  Agoseris glauca var. dasycephala L. Ahart, John Dittes 2005-6-1 11851 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  CHSC107994  Agoseris heterophylla Lowell Ahart; John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  POM34510  Agoseris heterophylla Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC13231  Agoseris monticola G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  UC1136778  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  UC725756  Agoseris retrorsa A. A. Heller 1940-5-22 15664 Lassen hill above Westwood Cemetery 1524 Comment
  HSC100160  Agropyron cristatum J. P. Smith, & J. O. Sawyer 2011-8-14 13375 Lassen Ramhorn Campground. 1383 Comment
  SEINET13680062  Agropyron desertorum J. R. Reeder, C. G. Reeder 1981-5-20 7350 Lassen 3.5 km NNW of Janesville. above Long Valley 1250 Comment
  UCR152278  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  SEINET12950845  Agrositanion saundersii B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11518 Lassen Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat.; 41.08261 -120.34968 1692 Comment
  JEPS100322  Agrostis exarata Dean W. Taylor 2001-7-12 17829 Lassen Diamond Mountains, spring at mouth of canyon ca. 4 miles NW of Constantia, along Forest Road 25N02X 1341 Comment
  SACT000106  Agrostis exarata Malcolm Nobs, S. Smith 1949-7-21 Lassen shallow marshy stream from springs, 4 miles north of madeline Comment
  CAS-BOT-BC139677  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49485 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC139296  Agrostis idahoensis Arnold Tiehm 1980-5-29 5760 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles southeast of Wendel. 1220 Comment
  CAS-BOT-BC138801  Agrostis scabra John Thomas Howell 1959-9-23 34882 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest Comment
  CAS-BOT-BC138622  Agrostis stolonifera H. S. Yates 1936-8-11 6069 Lassen Baxter Creek. 1280 Comment
  CAS-BOT-BC138625  Agrostis stolonifera John Thomas Howell 1973-7-10 s.n. Lassen Sierra Nevada. In city park, Susanville. 1295 Comment
  CAS-BOT-BC246539  Agrostis stolonifera Leland S. Smith 1919-8-10 1132 Lassen Modoc National Forest, Ash Valley - Templeton's Meadow 1463 Comment
  JEPS123839  Agrostis stolonifera Lowell Ahart, John Dittes 2015-7-14 20335 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  SBBG115824  Agrostis variabilis J. T. Howell, G. H. True 1973-8-1 50234 Lassen Diamond Range, S of Susanville Comment
  RSA95637  Aliciella Verne Grant 1955-6-8 20861 Lassen 1.8 miles south of Karlo Jct on hwy 395, between Litchfield and Ravendale 1280 Comment
  JEPS124713 Image available Alisma triviale P. Matteson 1968-7-9 86 Lassen 1.6 mi. N. of intersection of HWY 139 and Horse Lake Road. Comment
  CHSC64855  Allium acuminatum Vernon H. Oswald 1995-6-26 6926 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  CAS-BOT-BC459567  Allium acuminatum H. C. Cantelow 1940-5-31 3898 Lassen East of Mc Arthur Comment
  UC119964  Allium amplectens T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  RSA367043  Allium amplectens Anstruther Davidson s.n. Lassen [No locality information provided] Comment
  HSC69609  Allium anceps Gary Schoolcraft 1980-4-30 215 Lassen N base of Shaffer Mtn. near Shaffer Well 1354 Comment
  UC3055  Allium anceps Mrs. C. C. Bruce June, 1898 Lassen Madeline Plains Comment
  HSC47285  Allium anceps Dale McNeal 1978-5-30 2127 Lassen Beside Hwy. 395, 3 mi. S of Ravendale Comment
  SEINET10899656  Allium anceps Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2572 Lassen 3 miles s of hallelujah jct., On u.s. Hwy. 395, Jct. Of u.s. 395 & Calif. 70; Along roadside and in artemesia - grassland field Comment
  CHSC27661  Allium campanulatum Robert A. Schlising 1978-7-1 3302 Lassen S of Eagle Lake at E side of Mahogany Lake. 2060 Comment
  UC1136928  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  UC1924588  Allium lemmonii Debra Valov 2006-5-29 2006018 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1271 Comment
  HSC22953  Allium lemmonii John Pratt 1970-6-21 32 Lassen 1707 Comment
  HSC47288  Allium lemmonii Dale McNeal 1978-5-30 2129 Lassen Beside Hwy. 395, 1.9 mi. S of Ravendale Comment
  JEPS103209  Allium parvum G. Schoolcraft 1993-4-27 2256 Lassen Ash Valley RNA between Adin and Madeline, CA 1554 Comment
  CAS-BOT-BC474044  Allium parvum G. L. Stebbins; J. A. Jenkins 1937-7-9 2274 Lassen Bare summit ridge and ridges south west of Diamond Mt., south of Susanville 2286 Comment
  RSA59747  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 miles west of Madeline on road from Adin. 1677 Comment
  CAS-BOT-BC476625  Allium tolmiei B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6563 Lassen U.S. Hwy. 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield. 1330 Comment
  JEPS126533  Allophyllum divaricatum Lowell Ahart, John Dittes 2016-6-7 21011 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CAS-BOT-BC171315  Alnus incana subsp. tenuifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49461 Lassen Elysian Valley, W of Janesville. Sierra Nevada 1325 Comment
  CHSC26169  Alnus incana subsp. tenuifolia Detzer; Sacks 1977-7-24 2 Lassen Ca. 3 mi se Milford, .5 mi se Laufman Ranger Stn., on unimproved USFS road. 1481 Comment
  UC1594602  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  UC576312  Alopecurus aequalis H. S. Yates 1936-8-12 6082 Lassen McKenzie Meadow Susanville Quad., McKenzie Meadow 1524 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
  SEINET10967764  Alopecurus aequalis Vernon H. Oswald, Lowell Ahart 1995-8-14 Oswald 7194 Lassen T33N R14E NE1/4 Sec. 10, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd.) Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  CAS-BOT-BC138162  Alopecurus aequalis var. aequalis John Thomas Howell 1975-7-23 51388 Lassen Sierra Nevada. Susanville. 1295 Comment
  CAS-BOT-BC138012  Alopecurus geniculatus Peter H. Raven; Otto T. Solbrig 1958-6-17 13299 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  UC507008  Alopecurus geniculatus George A. Fischer and Irwin H. Johnson 1933-7-11 F 190 Lassen Dry Lake Lassen Forest, Grass Valley, Dry Lake 1694 Comment
  CHSC101019  Alyssum desertorum John Dittes 2008-5-22 1538 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; alluvial terrace on northeast side of Willow Creek. 483 Comment
  UC1583963  Alyssum desertorum G. Schoolcraft 1990-5-15 2046 Lassen about 3 mi s of Nubieber; John's Valley area 1402 Comment
  SEINET5340073  Alyssum desertorum J. A. Young 1982-1 s.n. Lassen M. Meyer's Ranch, Adin. 1372 Comment
  HSC102800  Alyssum simplex L. Ahart 2011-6-20 17493 Lassen 1.9 air miles NW of Moll Reservoir, 2.8 air miles W of Ash Valley, 8.4 air miles SE of Adin; ~ 80 yds. N of where road crosses Hunsinger Draw 1521 Comment
  JEPS93815  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1998-6-4 9144 Lassen s of Constantia (at parking area at end of spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  UCD114089  Alyssum simplex W. A. Harvey 1964-6-23 s.n. Lassen J. E. Albaugh ranch, ca. 4 miles southwest of Adin. Comment
  UC1118423  Ambrosia acanthicarpa C. W. Hanks 1934-9-25 86 Lassen floor of, (near Plumas National Forest) Long Valley; Sierraville Quad., Plumas National Forest 1371 Comment
  UC859331  Amelanchier A. A. Heller 1938-6-4 15144 Lassen about 1 mi e Fredonyer Pass 1706 Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  RSA122200  Amelanchier pallida L. R. Short 1936-5-22 349 Lassen Lassen Forest, Burgess Springs Exp. Range. 1860 Comment
  POM91172  Amelanchier pallida Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC142537  Amelanchier utahensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49160 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  SEINET3872064  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.; 0 1559 Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  POM71504  Amsinckia intermedia Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1182224  Amsinckia menziesii var. menziesii Francia Chisaki 1956-5-31 891 Lassen 15.4 mi n Litchfield (on Hwy #395) Comment
  UCD72518  Amsinckia tessellata Joe DiTomaso 2008-5-15 s. n. Lassen Modoc Plateau, just inside California (from Nevada) on Smoke Creek Road near Ravendale. Comment
  CHSC92825  Amsinckia tessellata var. tessellata Lowell Ahart; John Dittes 2005-6-1 11881 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  UC585123  Amsinckia tessellata var. tessellata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1747 Lassen e facing slope of gully on mountain above Red Rock 1432 Comment
  CHSC12433  Antennaria Robert Severin 1969-6-26 22 Lassen Papoose Meadow, 4 mi s of E.L.B.S.; 1/4 mi n of Cow Camp. 1630 Comment
  CAS-BOT-BC63874  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC63954  Antennaria argentea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49454 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC5194  Antennaria argentea A. Santos 1946-6-14 Lassen Spalding's, Eagle Lake. 1558 Comment
  UC1523709  Antennaria argentea Gary Schoolcraft 1981-7-8 501 Lassen north of Coulthurst Flat 1828 Comment
  CHSC91298  Antennaria dimorpha Lowell Ahart; John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  HSC28309  Antennaria dimorpha D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19266 Lassen Harvey Valley near Cone Springs 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
  UC1951075  Antennaria dimorpha Debra Valov 2009-4-25 2009016 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  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
  UC485653  Antennaria geyeri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  JEPS107290  Antennaria luzuloides Lowell Ahart, John Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS96124  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1996-6-24 7857 Lassen ca. 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow ca. 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  CAS-BOT-BC58695  Antennaria luzuloides Doris Kildale Gillespie 1930-5-12 9317 Lassen Fredonia Pass near Susanville Comment
  CHSC66233  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1996-6-24 7857 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  UC1609112  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-14 5506 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  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
  HSC28853  Antennaria rosea subsp. rosea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19180 Lassen Harvey Valley near Cone Springs 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
  CHSC117198  Aphyllon fasciculatum Lowell Ahart; John Dittes 2016-6-7 20997 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
  JEPS49803  Apocynum androsaemifolium Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  JEPS95872  Apocynum cannabinum Vernon H. Oswald and L. Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395: T31N R15E NE1/4 Sect. 3, 4450 ft elevation, sagebrush scrub, volcanic rock substrate 1356 Comment
  UC1537515  Apocynum cannabinum Gordon H. True Jr. 1937-7-10 782 Lassen Bull Flat, Refuge 1Q 1524 Comment
  CAS-BOT-BC392211  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  CHSC1430  Aquilegia formosa K. Chew 1954-7-9 Lassen Along Pine Creek just below Stephens meadow. 1828 Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  POM99591  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC1126589  Arabis glabra A. Simontacchi 1940-7-3 916 Lassen 2.6 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1935 Comment
  RSA0005588  Arabis sabulosa var. frigida Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  NY119565  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  NY119620  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake Comment
  SEINET2471253  Arceuthobium abietinum R. L. Mathiasen 2008-9-26 2008 -68 Lassen 16.5 km S. of N. entrance to Lassen Nat. Park on State Rte. 89 1940 Comment
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  CAS-BOT-BC45895  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45900  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45902  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  JEPS38799  Arctostaphylos nevadensis Jos. Grinnell 1928-6-28 Lassen Prospect Mt. 2286 Comment
  UC1137649  Arctostaphylos patula A. Simontacchi 1940-5-13 703 Lassen 4.1 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD53307  Arctostaphylos patula Beecher Crampton 1964-1-26 7080 Lassen Ca. 35 miles NW of Susanville. 2042 Comment
  CHSC36457  Arctostaphylos patula subsp. patula Susan H. Euing 1982-6-5 11 Lassen Base of northeast slope, Gallatin Peak, 1000 ft approx. from summit. Comment
  UC1125789  Arenaria congesta var. congesta A. Simontacchi 1940-6-12 847 Lassen 3.5 mi sse Blaks Mtn.; Lassen National Forest,Halls Flat Quadrangle Comment
  UC120411  Arenaria congesta var. suffrutescens T. S. Brandegee 1892-7-26 Lassen Milford Comment
  UC1537301  Arenaria congesta var. suffrutescens Gordon H. True Jr. 1936-6-27 561 Lassen Top of Hot Spring Mountain Hot Spring Mountain 1981 Comment
  CHSC91923  Arenaria kingii var. glabrescens L. P. Janeway; B. Castro 2005-7-10 8484 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  UC1523778  Arenaria serpyllifolia subsp. serpyllifolia Gary Schoolcraft 1981-6-9 441 Lassen s Pittville Comment
  CHSC7771  Argemone munita Beverly J. Wise 1969-6-4 73 Lassen North edge of Milford, roadside, Hwy 395. 1310 Comment
  CAS-BOT-BC401787  Argemone munita subsp. rotundata John Thomas Howell 1973-7-10 49789 Lassen 3 miles west of Susanville 1371 Comment
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  RSA152609  Argemone munita subsp. rotundata I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. e of Susanville Comment
  CAS-BOT-BC400405  Aristolochia californica Jas. McMurphy 1914-4-1 s.n. Lassen Pitt Comment
  CDA10113  Arnica amplexicaulis G. D. Barbe 1982-7-12 3871 Lassen Along South Grasshopper Road at west base of Grasshopper Ridge, 4 miles south of Termo-Grasshopper Road. Comment
  UC1136826  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 184 Lassen (Dry Lake) Grass Valley Grass Valley, Thompson Meadow 1694 Comment
  UC507003  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 194 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  JEPS118465  Arnica chamissonis subsp. foliosa 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
  RSA0059627  Arnica chamissonis subsp. foliosa 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
  CAS-BOT-BC332742  Arnica chamissonis subsp. foliosa R. F. Thorne; Larry E. DeBuhr 1975-8-22 46993 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  UC1609098  Arnica fulgens Vernon H. Oswald and Lowell Ahart 1993-6-28 5580 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  CAS-BOT-BC82649  Arnica latifolia John Thomas Howell; Gordon H. True 1973-8-1 50236 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  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
  CHSC108006  Arnica sororia Lowell Ahart; John Dittes 2011-6-20 17483 Lassen About 30 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS109852  Arnica sororia Dean W. Taylor 2006-6-29 19559 Lassen Longs Cabin (ca. 12 air miles NE of Old Station) 1783 Comment
  JEPS103204  Arnica sororia G. Schoolcraft 1994-6-9 2346 Lassen West of Hwy. 139 near Grasshopper valley 1706 Comment
  UCD129144  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  SEINET263091  Artemisia arbuscula Jennifer Lyman 1994-4-23 4243 Lassen Lassen County: along Highway 395, ca. 25 miles N. of Susanville. 1433 Comment
  SEINET3358258 Image available Artemisia arbuscula A. A. Beetle 1957-8-16 12763 Lassen Between Susanville and Johnstonville. Comment
  CAS-BOT-BC85002  Artemisia arbuscula subsp. arbuscula James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-20 4117 Lassen 81 miles south of Alturas in Lassen County. Comment
  SEINET2164572  Artemisia arbuscula subsp. arbuscula Unknown 1985-6-23 8603 Lassen 41 miles north of Susanville on hwy 395 1430 Comment
  UCR268958  Artemisia arbuscula subsp. arbuscula Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31433 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
  JEPS103162  Artemisia biennis B. Corbin and D. Armentrout 2002-9-4 1100 Lassen Biscar Reservoir, near dam on upper pond 1357 Comment
  UC1119576  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 950 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD129274  Artemisia cana subsp. bolanderi Howard Leach Date Unknown s.n. Lassen Madeline Plains. Comment
  RSA518443  Artemisia douglasiana George K. Helmkamp 1990-9-23 G- 9 Lassen N of Ravendale 1677 Comment
  JEPS103170  Artemisia dracunculus Beth Corbin 2002-7-10 1089 Lassen Madeline Plains, ESE side. 5 air mi N of top of Observation Pk. 1627 Comment
  JEPS124638 Image available Artemisia lindleyana Laurie Hooker 1965-7-13 119 Lassen On highway 299 west under 2nd bridge of Pit river overflow. Comment
  CHSC42149  Artemisia ludoviciana C. E. Laver 1985-7-15 Lassen Ca. 7.8 mi E of Madeline and 4 mi N of Spooner Reservoir. 1584 Comment
  CHSC111259  Artemisia ludoviciana subsp. ludoviciana L. P. Janeway; B. Castro 2012-7-2 10934 Lassen Modoc Plateau. Along Skedaddle Ranch Road 6.4 road km north of Skedaddle Creek at an unnamed tributary of Bull Creek. 1533 Comment
  JEPS37022  Artemisia nova R. F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  SEINET263201  Artemisia nova J. Lyman 1994-4-23 4242 Lassen Along Highway 395, ca. 25 miles north of Susanville on intersecting BLM road 1433 Comment
  UCR67441  Artemisia tridentata George K. Helmkamp 1990-9-23 D- 7 Lassen 20 mi north of Litchfield along US Hwy 395 1437 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
  SEINET3397751  Artemisia tridentata subsp. tridentata Unknown 1994-1 s.n. Lassen 15 mi. N. of Litchfield Comment
  SEINET3397741  Artemisia tridentata subsp. vaseyana Unknown 1994-1 s.n. Lassen Sage Hen Summit - US 395 Comment
  SEINET955514  Asclepias cordifolia Helen K. Sharsmith 1955-1 4514 Lassen Lassen National Forest. In forest adjacent to State Highway 299 near Fall River Mills. 1219 Comment
  SEINET12319574  Asclepias fascicularis Unknown 1978-1 84 Lassen E shore of Eagle L., S of Little Troxel Pt., T32N, R11E, sec14 1573 Comment
  CDA5651  Asperugo procumbens Ancell May 1940 Lassen Susanville. 0 Comment
  UCR67471  Aster foliaceus George K. Helmkamp 1990-9-23 G- 12 Lassen north of Ravendale 1677 Comment
  CHSC12949  Astragalus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5811 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  UCD105587  Astragalus Grady L. Webster 1989-5-13 7720 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UCD105589  Astragalus Grady L. Webster 1989-5-13 7721 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  RSA0027352  Astragalus John F. Emmel 1994-7-17 1327 Lassen Summit area of Observation Peak. 2378 Comment
  CHSC78382  Astragalus andersonii Vernon H. Oswald 2000-6-10 9928 Lassen Near the OHV Staging Area in the Fort Sage Mountains northeast of Doyle. 1444 Comment
  NY791371  Astragalus andersonii D. B. Dunn 1971-6-2 17802 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402.1 Comment
  CAS-BOT-BC177434  Astragalus andersonii John Wynn Gillespie; Doris Kildale Gillespie 1930-5-14 9378 a Lassen 5 miles west of Susanville on Red Bluff road Comment
  NY791368  Astragalus andersonii M. J. Williams 1978-5-14 7848- 2 Lassen 2.8 miles south of northern road into Red Rock (off Highway 395) 1371.6 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
  NY790603  Astragalus argophyllus var. argophyllus A. Tiehm 1986-5-12 10347 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  SEINET5323198  Astragalus bolanderi R. McKee, H. L. Westover 1918-6-13 s.n. Lassen Susanville Comment
  NY797392  Astragalus canadensis var. brevidens R. R. Halse 1991-7-28 4247 Lassen Along State Highway 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville 1558 Comment
  POM204047  Astragalus canadensis var. brevidens J. T. Howell 1934-7-8 12504 Lassen Spaldings Resort; Eagle Lake Comment
  UCD104693  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  RSA60316  Astragalus curvicarpus E. K. Balls 1950-5-9 15949 Lassen 6 miles south of Doyle, Hwy 395. 1372 Comment
  SEINET10486010  Astragalus curvicarpus Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 862 Lassen Collected on road bank 24 mi n of california state line on hwy 395. Comment
  JEPS54557  Astragalus curvicarpus var. curvicarpus T. Brandegee 1892-6-23 Lassen Honey Lake Comment
  JEPS87396  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111,36N01) 1.9 mi n of Hwy 44 on the se edge Poison Lake; se edge Poison Lake 1709 Comment
  NY803538  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch 1280 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
  NY803535  Astragalus curvicarpus var. curvicarpus M. J. Williams 1973-5-12 73-C- 16 Lassen Near Herlong Turn from Highway 395 1250 Comment
  SEINET12165120  Astragalus curvicarpus var. curvicarpus N. H. Holmgren, Holmgren, P. K. 1980-1 9504 Lassen Observation Peak, S side of Mt, 11 mi airline distance E of Ravendale, T34N R16W S34 1890 Comment
  CHSC37683  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  CHSC64876  Astragalus filipes Vernon H. Oswald; Lowell Ahart 1995-6-19 6883 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. In wash on n side of road. 1371 Comment
  JEPS125804  Astragalus filipes William Harnach 2010-6-8 1244 Lassen Honey Lake Valley, NE of Doyle, 2 miles west of the Nevada state line on Fort Sage Road. Comment
  NY658500  Astragalus filipes P. H. Raven 1958-6-17 13290 Lassen Along US Highway 395, o.4 mile South of Ravendale Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  CAS-BOT-BC186853  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  CAS-BOT-BC186860  Astragalus gibbsii John Thomas Howell 1974-7-8 50462 Lassen Susanville 1295 Comment
  CAS-BOT-BC186867  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1942-5-22 4541 Lassen Loyalton 1524 Comment
  NY674270  Astragalus gibbsii K. Morris 1973-5-25 214 Lassen 4 miles south of Susanville, on US 36 Comment
  RSA110066  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1942-5-22 4541 Lassen Loyalton 1524 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  CHSC83623  Astragalus inversus L. P. Janeway 2001-6-28 7237 Lassen High Cascade Range. Southeast slope of Cone Mountain, 0.8 km south-southeast of the summit; along Road 33N41Y 0.2 km northwest of Road 33N41YD. 1950 Comment
  POM180437  Astragalus inversus T. S. Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  POM24454  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC229046  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
  UCD55267  Astragalus lentiginosus Ellen Dean 2006-5-15 3065 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
  RSA109609  Astragalus lentiginosus var. chartaceus H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen West of Susanville 1311 Comment
  CAS-BOT-BC187160  Astragalus lentiginosus var. floribundus Noel H. Holmgren; Patricia K. Holmgren 1980-7-5 9520 Lassen Upper Smoke Creek drainage, 20.4 km (12.7 mi) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale 1580 Comment
  UC862859  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 60 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
  UC1128892  Astragalus lentiginosus var. lentiginosus A. Simontacchi 1940-6-8 844 Lassen Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest) Comment
  HSC28508  Astragalus lentiginosus var. platyphyllidius D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19294 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CDA19719  Astragalus malacus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  UC1567373  Astragalus pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen e slope Shaffer Mtn. 1524 Comment
  JEPS109744  Astragalus pulsiferae var. coronensis Dean W. Taylor 2005-6-29 19379 Lassen Piute Creek, 3 mi W from western edge Susanville 1310 Comment
  NY694120  Astragalus pulsiferae var. coronensis N. H. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  SEINET240400  Astragalus pulsiferae var. coronensis S. L. Welsh, ND Atwood 2001-6-14 28150 Lassen E of Hwy 395, road to Rams Horn Spring campground 1540 Comment
  RSA104884  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass. 1494 Comment
  SEINET5324574  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 -L-16 Lassen Burn area, W of Hwy 395 and Near Hwy 70. 1494 Comment
  SEINET10841190  Astragalus purshii Mary Susan Taylor 1974-5-4 Taylor 224 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
  RSA0007957  Astragalus purshii var. lectulus H. D. Ripley, R. C. Barneby 1944-5-30 5983 Lassen 2 miles N of Madeline. 1707 Comment
  CAS-BOT-BC194090  Astragalus purshii var. purshii H. D. Ripley; R. C. Barneby 1943-6-14 5741 Lassen West of Susanville 1310 Comment
  CAS-BOT-BC194097  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8352 Lassen Omira Comment
  JEPS127726  Astragalus purshii var. purshii H. Chappel, K. Moran & K. Strassman 2002-6-27 ALT- 013 Lassen Pit River Valley/Beaver Creek BLM land Comment
  CHSC99121  Astragalus purshii var. tinctus Lowell Ahart; John Dittes 2008-6-19 14888 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
  UC1128896  Astragalus purshii var. tinctus A. Simontacchi 1940-6-8 839 Lassen 1/2 mi ne Ebey Lake; Halls Flat Quad., Lassen National Forest, e of Ebey Lake 1699 Comment
  UC773896  Astragalus purshii var. tinctus L. R. Short and J. Warren 1936-6-11 S- 402 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range (Lassen National Forest) 1789 Comment
  POM25988  Astragalus whitneyi Marcus E. Jones 1897-6-28 s.n Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC13372  Astragalus whitneyi M. S. Baker and F. Nutting 1894-7-3 Lassen s side Dixey Mts. Comment
  CAS-BOT-BC200869  Astragalus whitneyi var. confusus D. B. Dunn; B. J. Cox 1971-6-2 17770 Lassen Approx. 12 mi. S. of Adin on Calif. Hwy. 139 1371 Comment
  SD109653  Astragalus whitneyi var. confusus James Vale, Keith Wagnon, Walter & Irja Knight 1981-5-24 4136 Lassen 3 mi S of Adin on Hwy #139 1372 Comment
  CAS-BOT-BC200874  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  RSA517335  Astragalus whitneyi var. siskiyouensis Barbara J. Ertter, Gary Schoolcraft 1987-6-16 7183 Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  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
  RSA110171  Astragalus whitneyi var. siskiyouensis H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5747 Lassen Hidden Valley E of Susanville. 1585 Comment
  UC1730231  Astragalus whitneyi var. whitneyi L. P. Janeway 1998-7-8 5722 Lassen ridgetop saddle 2.4 mi NW of Red Rock (along road 213, 0.1 mi E of jct of Roads 28N08, 29N10, 213, and 28N55); ; Ridgetop saddle about 2.4 mi northwest of Red Rock; along Road 213, 0.1 mi east of the junction of Roads 28N08, 29N10, 213, and 28N55. 1988 Comment
  JEPS94136  Athysanus pusillus Vernon H. Oswald and Lowell Ahart 1998-5-22 9130 Lassen ca. 5 mi. n.e. Doyle (rd. to Summit of Fort Sage Mts., 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  UC769845  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  UC769938  Atriplex confertifolia R. F. Hoover 1940-10-5 4663 Lassen Wendel Comment
  CHSC76093  Atriplex heterosperma Lowell Ahart; Vernon Oswald 1999-9-13 8208 Lassen On the west side of the dirt road and 1/2 mile south of the isgn in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1176 Comment
  JEPS95899  Atriplex heterosperma Lowell Ahart 1999-9-13 8208 Lassen on the west side of the dirt road and 1/2 mile south of the sign in station; Honey Lake Wildlife Area; 4 1/2 miles (air) southeast of Standish 1207 Comment
  CHSC76274  Atriplex triangularis Lowell Ahart; Vernon Oswald 1999-9-13 8209 Lassen On the edge of a flooded field 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
  UC1924265  Avena fatua Debra Valov 2004-6-9 2004265 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  RSA122664B  Avena sativa A. Simontacchi 1940-6-13 854 Lassen 3.4 miles W.S.W. of Patterson Mtn.; Halls Flat 1738 Comment
  CAS-BOT-BC106488  Balsamorhiza hookeri David D. Keck; J. Clausen 1935-6-24 3747 Lassen 2 mi. S. of Ravendale, in light sandy clay soil with some rock. 1463 Comment
  JEPS109626  Balsamorhiza hookeri Dean W. Taylor 2002-6-21 18178 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  CAS-BOT-BC106493  Balsamorhiza hookeri Rhonda Riggins 1989-4-27 1635 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N. Litchfield, 26.6 mi S Ravendale 1310 Comment
  RSA74324  Balsamorhiza hookeri var. lagocephala Milo S. Baker 1952-5-23 12432 Lassen Hwy. 36, 1/2 mi West of [Fredonyer] Pass 1752 Comment
  SEINET10534911  Balsamorhiza incana Billy Joe Cox 1971-6-2 Cox 3102 Lassen 4 mi. S of Adin along CA Hwy. 139 in basalt-clay; valley floor in Artemisia. 1341 Comment
  CHSC54172  Balsamorhiza macrolepis var. platylepis Vernon H. Oswald 1991-5-28 4622 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  SEINET10617239  Balsamorhiza sagittata Billy Joe Cox 1971-6-2 Cox 3216 Lassen Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia. 1646 Comment
  CAS-BOT-BC16436  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49177 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 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
  UC1191423  Bassia hyssopifolia Verne Grant and Irving Schneider 1947-9-6 8390 Lassen near Wendel (irrigation ditch w of Fleming Ranch Headquarters) Comment
  UCD146585  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CAS-BOT-BC145784  Beckmannia syzigachne Peter H. Raven; Otto T. Solbrig 1958-6-17 13262 Lassen United States Highway 395, 2.1 miles northeast of Standish. Comment
  RSA129087  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 miles E.S.E. of Susanville 1280 Comment
  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
  CHSC96767  Berteroa incana D. McDonald 2005-7-18 1307852 Lassen Modoc Plateau. Lassen County. Hallelujah Junction. Comment
  JEPS113921  Berteroa incana William Harnach 2006-5-31 1229 Lassen Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch). Comment
  CHSC29876  Berula erecta Robin L. Ondericek 1978-8-8 119 Lassen In water above the dam at Murrers Upper Meadow. 1548 Comment
  NY1102107  Berula erecta R. F. Hoover 1940-10-1 4658 Lassen Near Honey Lake, between Janesville and Standish Comment
  UC1191930  Berula erecta Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 a Lassen 1 mi s of Doyle (Long Creek); Long Creek Comment
  UC1135177  Betula glandulosa D. Dunning 1935-9-5 Lassen Bridge Creek Lassen National Forest, Eagle Lake Quadrangle Comment
  HSC95177  Bidens cernua Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 678 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95266  Bidens cernua Gordon Leppig 1998-8-17 1047 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC96712  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  SEINET4176271  Bistorta bistortoides C. G. Gulling 1905-1 1548 Lassen Big Meadows Comment
  CAS-BOT-BC413003  Bistorta bistortoides John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-13 49225 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC128041  Blepharipappus scaber Farris Farris 1935-5-20 s.n. Lassen Three miles southwest of Susanville 1341 Comment
  CAS-BOT-BC128048  Blepharipappus scaber A. M. Vollmer; L. Beane 1953-7-1 99 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC68732  Blepharipappus scaber Vernon H. Oswald; Lowell Ahart 1997-5-27 8484 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
  HSC42530  Blepharipappus scaber Barbara Kelly 1977-8-9 566 Lassen 14.3 mi. E of Madeline on the dirt road from Adin Comment
  RSA0125912  Boechera Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CAS-BOT-BC14089  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 miles SE of Nigger Cabin. 1737 Comment
  CAS-BOT-BC14091  Boechera pauciflora John Thomas Howell; Gordon H. True 1973-7-31 50038 Lassen Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak. 1737 Comment
  CHSC107999  Boechera pinetorum Lowell Ahart; John Dittes 2011-6-20 17505 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC66379  Boechera pinetorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7793 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  CHSC25300  Boechera puberula Pauleen Broyles 1977-5-30 143 Lassen Spencer's Basin ca 8 km n of Herlong. 1770 Comment
  CHSC99134  Boechera puberula Lowell Ahart; John Dittes 2008-6-19 14883 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  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
  UC1609108  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1993-6-14 5512 Lassen ca 4 mi (air) w Eagle Lake (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); Brockman Flat Lava Beds 1810 Comment
  CHSC29913  Boechera sparsiflora Robin L. Ondricek 1978-5-25 27 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  CAS-BOT-BC25677  Boechera sparsiflora H. D. Ripley; R. C. Barneby 1944-3-29 5948 Lassen South of Constantia. 1447 Comment
  CAS-BOT-BC25935  Boechera suffrutescens Blanche Clear 1940-7-25 s.n. Lassen Volcanic Park. Cinder Cone. Comment
  POM253282  Boisduvalia densiflora var. pallescens A. A. Heller 1938-7-28 15296 Lassen About a mile east of Westwood 1524 Comment
  CHSC76305  Bolboschoenus maritimus subsp. paludosus Lowell Ahart; Vernon H. Oswald 1999-9-13 8221 Lassen On the edge of a flooded field, 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-BC149498  Bromus briziformis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile west of Karls. Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
Read comments
Jun 19 2008
  CHSC64814  Bromus briziformis Vernon H. Oswald 1995-5-31 6799 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  SEINET8506610  Bromus briziformis D. W. Taylor 2005-6-29 19380 Lassen Piute Creek, 3 miles West from western edge, Susanville 1311 Comment
  CAS-BOT-BC149584  Bromus carinatus var. carinatus John Thomas Howell 1973-7-10 49778 Lassen Sierra Nevada. Fredonyer Pass. 1737 Comment
  UC773968  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1820 Comment
  UCD59104  Bromus carinatus var. marginatus A. A. Beetle 1941-6-28 2802 Lassen 10 miles W of Chester. 1524 Comment
  UC1024682  Bromus ciliatus Leo Whitney 1934-7-26 2164 Lassen 7-8 mi sw of Eagle Lake (near Bridge Creek, Lassen National Forest, Bridge Creek Camp); Lassen National Forest, Bridge Creek Camp 1737 Comment
  CAS-BOT-BC155939  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CHSC75564  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1999-6-9 9750 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Along a drainage below the dam of the reservoir. 1353 Comment
  UCD58467  Bromus commutatus Beecher Crampton 1954-7-5 2056 Lassen Along Hwy. 36. 4.5 miles west of Susanville. Comment
  CAS-BOT-BC155325  Bromus inermis John Thomas Howell 1975-7-23 51410 Lassen Sierra Nevada. Along Highway 395 between Johnstonville and Jonesville. 1280 Comment
  UC70688  Bromus inermis subsp. inermis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CDA1829  Bromus japonicus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 Comment
  JEPS103200  Bromus japonicus G. Schoolcraft 1995-6-6 2492 Lassen Antelope Spring N of Skedaddle Mountains 1524 Comment
  UC1024800  Bromus japonicus Leo Whitney 1935-6-23 3297 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10 Lassen National Fores; Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  UCD58869  Bromus japonicus R. Tofsrud 1947-7-1 250 Lassen Between Bieber and Nubieber. Comment
  UC1037147  Bromus marginatus Leo Whitney 1935-7-6 3429 Lassen near Pit River (Lassen National Park); Lassen National Park Comment
  CAS-BOT-BC162182  Bromus orcuttianus John Thomas Howell; Gordon H. True 1973-8-1 50180 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  UC1024701  Bromus racemosus L. Whitney 1934-7-18 2143 Lassen Lassen National Forest 1371 Comment
  CAS-BOT-BC161576  Bromus suksdorfii Clare B. Hardham 1971-8-22 18407 Lassen Diamond Mountain. 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-BC161419  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49199 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  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
  CDA1862  Bromus tectorum A. A. Beetle 1941-6-28 2796 Lassen Rte. 36, 10 miles west of Chester. 0 Comment
  CHSC106583  Bromus tectorum Zachary Garcia 2008-4-8 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  RSA152589  Bromus tectorum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16341 Lassen 13.5 mi. E. of Susanville Comment
  UCD59851  Bromus tectorum L. Whitney 1933-8-8 s.n. Lassen Lassen National Forest. 1920 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
  UCD169625  Callitriche palustris R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1615 Comment
  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
  SEINET3828391  Callitriche verna R. F. Thorne, Larry E. De Buhr 1975-1 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC12426  Calocedrus decurrens Anne Linda Brisk 1969-6-20 12 Lassen 5.5 mi S of ELBS on Road 5.16.2. 1920 Comment
  NY18970  Calocedrus decurrens K. Morris 1973-5-25 226 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  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
  HSC23523  Calochortus leichtlinii R. Carter 1967-6-27 552 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  SBBG15290  Calochortus leichtlinii H. and M. Dearing 1938-7-1 2237 Lassen top of pass W of Susanville 1762 Comment
  UC727118  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass 1219 Comment
  CAS-BOT-BC487964  Calochortus leichtlinii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50680 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CAS-BOT-BC483439  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  UC1542941  Calyptridium umbellatum G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley National Recreational Area 1554 Comment
  UC420619  Calyptridium umbellatum Franklin P. Nutting Lassen Pine Creek Comment
  SEINET10533674  Camassia leichtlinii subsp. suksdorfii Katherine L. Morris 1973-5-25 Morris 251 Lassen 27.7 mils nw of the jct. Of hwy. 36 And 44 on hwy. 44, At robber's spring, in An open meadow on one side of the hyw wirh yellow pine, white fir and open on The other side Comment
  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
  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
  CHSC6272  Camassia quamash subsp. breviflora J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek. 1584 Comment
  CAS-BOT-BC497553  Camassia quamash subsp. breviflora L. Beane; A. M. Vollmer 1953-7-1 92 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC4969  Camissonia R. Carter 1967-6-23 540 Lassen Along rd to Murrer's Meadow. 1584 Comment
  UCR201582  Camissonia Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  RSA339990  Camissonia andina Noel Holmgren, Patricia K. Holmgren 1980-7-5 9521 Lassen Lassen County: upper Smoke Creek drainage, 20.4km (12.7miles) from Hwy 395 via Rye Patch Canyon, 24km (15miles) airline distance SE of Ravendale 1585 Comment
  POM253236  Camissonia boothii subsp. alyssoides A. A. Heller 1938-6-23 s.n. Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  RSA38438  Camissonia boothii subsp. alyssoides P. A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Hwy 395. 1341 Comment
  SEINET3282784 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  POM38501  Camissonia claviformis subsp. cruciformis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC64795  Camissonia contorta Vernon H. Oswald 1995-5-24 6781 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an insigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  NY851343  Camissonia contorta LeDoux 1973-5-25 870 Lassen Collected 3 miles north of Milford on Hwy 395 at Honey Lake campgrounds Comment
  JEPS93828  Camissonia parvula Vernon H. Oswald and Lowell Ahart 1998-6-4 9141 Lassen s of Constantia (Red Rock Road at its junction with Highway 395); Red Rock Road 1365 Comment
  NY851778  Camissonia pubens W. W. Eggleston 1911-5-29 6741 Lassen Vicinity of Doyle Station 1290 Comment
  HSC30040  Camissonia subacaulis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19152 Lassen 3 mi. N of Westwood Comment
  HSC42415  Camissonia tanacetifolia Barbara Kelly 1977-8-9 565 Lassen 14.3 mi. E of Madeline on the dirt road from Adin Comment
  NY852070  Camissonia tanacetifolia A. R. Kruckeberg 1954-6-22 3322 Lassen 6 miles south of Likely on Highway 395 Comment
  CAS-BOT-BC160868  Camissonia tanacetifolia subsp. tanacetifolia M. S. Baker; Frank Nutting 1894-8-21 s.n. Lassen Near Eagle Lake 1524 Comment
  CAS-BOT-BC160875  Camissonia tanacetifolia subsp. tanacetifolia Noel H. Holmgren; Patricia K. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of US Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CAS-BOT-BC160861  Camissonia tanacetifolia subsp. tanacetifolia Raymond Nelson 1962-8-25 s.n. Lassen Lassen Volcanic National Park. On the east shore of Snag Lake Comment
  CAS-BOT-BC160872  Camissonia tanacetifolia subsp. tanacetifolia Loran C. Anderson; Kent Fish 1965-8-17 2951 Lassen Along hiway 44, in undisturbed sites of Hog Flat. 24 air miles northwest of Susanville 1676 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
  CHSC99529  Capsella bursa-pastoris Lowell Ahart; John Dittes 2008-6-22 15033 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
  UC773929  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  UCD114153  Capsella bursa-pastoris L. R. Short; J. Warren 1936-6-9 S- 408 Lassen Burgess Spring Experimental Range; around old sheep bed-grounds. 1844 Comment
  POM95249  Capsella bursa-pastoris Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  NY119877  Cardamine breweri R. C. Rollins 1981-5-30 81168 Lassen Gold Run Road, toward Ski Line Drive, 10 miles S of Susanville Comment
  CHSC99732  Cardamine oligosperma Lowell Ahart; John Dittes 2008-6-20 14942 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS95978  Cardaria chalepensis Vernon H. Oswald and L. Ahart 1999-6-9 9749 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  CAS-BOT-BC18447  Carex abrupta George Wilson Gillett 1957-7-21 867 Lassen Lassen Volcanic National Park. Swale below (north of) summit of trail between Juniper Lake and Cameron Meadow. 2118 Comment
  CHSC112416  Carex angustata Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18769 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1537643  Carex athrostachya Gordon H. True Jr. 1939-6-15 994 Lassen Bullard Lake, W of Grasshopper Valley Comment
  UC50815  Carex athrostachya J. Burtt Davy Jun 17-24 1897 3298 Lassen Honey Lake Valley, slough near Dr. Witt's Comment
  CDA33021  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen Adjacent to boat ramp, campground on the east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. 0 Comment
  CHSC77240  Carex aurea G. Schoolcraft 1996-9-5 2553 Lassen N. side of Biz Johnson Trail. 1402 Comment
  CHSC110089  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  SEINET13351078  Carex davyi B. L. Wilson, P. Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley 1740 Comment
  HSC48337  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen 2 mi. N of Westwood 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
  CAS-BOT-BC19778  Carex douglasii Clarence Roy Quick 1962-6-17 32 -18 Lassen sagebrush flat, north of DeLasmutt Ranch on old dirt road to Blacks Mountain E.F. Headquarters. 1615 Comment
  CDA33049  Carex douglasii T. C. Fuller 1963-7-15 10890 Lassen South side of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  CHSC111069  Carex douglasii Barbara L. Wilson 2011-8-7 16803 Lassen Where route A21 crosses the railroad tracks north of Westwood; UTM 10, 669989 east, 4469294 north, +/- 23. 1606 Comment
  SEINET7557452 Image available Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvey Valley. Comment
  CAS-BOT-BC20166  Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  CHSC60783  Carex filifolia var. erostrata Vernon H. Oswald; Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  HSC48360  Carex filifolia var. erostrata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19171 Lassen Open pasture in Harvey Valley near Cone Springs Comment
  UCD37482  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Lassen National Forest, 6 miles north of Bogard Ranger Station, Harvey Valley. 1676 Comment
  HSC103600  Carex fracta Thomas W. Nelson, Jane Nelson 1985-8-10 8011 Lassen Along north side of Silver Lake 1829 Comment
  JEPS118164  Carex geyeri Dean W. Taylor 2009-5-20 20601 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  CAS-BOT-BC20938  Carex heteroneura John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50698 Lassen South and southeast of Diamond Mountain. 2286 Comment
  CHSC60433  Carex lenticularis var. impressa Mary Ann Showers 1992-6-13 2545 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  HSC103598  Carex leporinella Thomas W. Nelson, Jane Nelson 1985-8-10 8012 Lassen Along north side of Silver Lake campground 1829 Comment
  CDA33106  Carex limosa Gordon Leppig, J. Cromwell 1997-7-27 610 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC95192  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS97331  Carex limosa Vernon H. Oswald 1995-8-26 7217 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC1136939  Carex mariposana L. R. Short and J. Warren 1936-6-9 S- 405 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  UC1583950  Carex multicaulis G. Schoolcraft 1990-5-15 2049 Lassen about 4 mi s Nubieber; John's Valley 1310 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
  JEPS120112  Carex nebrascensis Lowell Ahart, John Dittes 2012-7-9 18298 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA755319  Carex nebrascensis L. Ahart, John Dittes 2008-6-22 15019 Lassen On the north side of the levee, about 90 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 air miles northeast of Bieber. 1261 Comment
  UC2031881  Carex nebrascensis Nick Otting and Danna Lytjen 2003-7-17 693 Lassen Cascade Mountains, Susan River, 1/2 mile NE of Devil's Corral, 5 air miles west of Susanville. Comment
  HSC103652  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8016 Lassen Along north side of Silver Lake 1829 Comment
  RSA201569  Carex nebrascensis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  CAS-BOT-BC119716  Carex nervina John Thomas Howell 1976-7-19 51989 Lassen On Gold Run Creek SW of Susanville. 1386 Comment
  CHSC58857  Carex pellita Vernon H. Oswald; Lowell Ahart 1992-7-16 5120 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  CHSC66270  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-24 7892 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the southern-most spring on the E side of the meadow 1633 Comment
  CHSC85980  Carex pellita L. P. Janeway 2003-7-24 7919 Lassen High Cascade Range. In middle of small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  CHSC98386  Carex petasata Dean Wm. Taylor 2007-6-14 20126 Lassen Stream channel sraining Lower Gooch Valley into Gordon Valley. 1828 Comment
  UC2031890  Carex petasata Nick Otting and Danna Lytjen 2003-7-14 675 Lassen Modoc Plateau, Willow Creek at Willow Creek Campground, 14 air miles south-southeast of Adin. Comment
  HSC48074  Carex praegracilis D. H. Norris, F. J. Hermann 1972-5-17 22629 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  JEPS107836  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11879 Lassen about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  SEINET13694793  Carex praegracilis B. L. Wilson, P. Zika 2011-8-7 16802 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  SEINET7572131 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11879 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  CAS-BOT-BC118742  Carex preslii Alice Eastwood; John Thomas Howell 1940-6-16 8338 Lassen Janesville Comment
  JEPS28380  Carex raynoldsii George W. Gillett 1957-7-29 948 Lassen along trail between Butte Lake and Sang Lake; Lassen Volcanic National Park 1859 Comment
  CHSC53538  Carex rossii L. P. Janeway; Gary Benson, Randy Harrison 1984-8-23 1057 B Lassen On southwest side of Blue Lake. 1889 Comment
  JEPS118165  Carex rossii Dean W. Taylor 2009-5-20 20604 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  UC1108040  Carex scopulorum var. bracteosa E. B. Copeland 1932-8-15 Lassen King's Creek Meadow, at road crossing Mount Lassen 2225 Comment
  POM81761  Carex sheldonii Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CHSC114421  Carex simulata Allison Sanger 2012-7-31 Lassen Cooper Swamp, east of Silver Lake across Road 32N10, approximately 36 air miles west-northwest of Susanville. 1956 Comment
  CAS-BOT-BC116615  Carex subfusca Hans Leschke 1960-8-8 1738 Lassen Below trail Ski Hut-Crumbaugh Lake. 1981 Comment
  CAS-BOT-BC116623  Carex subfusca John Thomas Howell 1973-7-10 49765 Lassen Near Westwood. 1554 Comment
  SEINET13720729  Carex subfusca B. L. Wilson, P. Zika 2011-8-7 16801 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  UC2031888  Carex subfusca Nick Otting and Bruce Newhouse 2003-7-15 680 Lassen Sierra Nevada Mountains, Diamond Mountain, 1700 feet southeast of summit, 8 air miles south-southwest of Susanville. Comment
  CAS-BOT-BC116612  Carex subfusca Hans Leschke 1957-9-21 1528 Lassen Trail Butte Lake-Cinder Cove at cold spring. 1859 Comment
  CHSC76792  Carex utriculata L. P. Janeway 1999-9-5 6580 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  HSC95286  Carex vesicaria Gordon Leppig 1998-8-17 1039 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95287  Carex vesicaria Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 534 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC103632  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8027 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  SEINET7579960 Image available Carex vesicaria George W. Gillett 1957-7-22 879 Lassen Lassen Volcanic National Par, Snag Lake, matin of gravel bars along south shore. 1850 Comment
  CHSC106570  Castilleja angustifolia K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  UC585181  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1759 Lassen e of Red Rock (nw side of summit of ridge) 1828 Comment
  CAS-BOT-BC249610  Castilleja applegatei subsp. pinetorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49170 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC249617  Castilleja applegatei subsp. pinetorum Alice Eastwood; John Thomas Howell 1940-6-15 8326 Lassen Grasshopper Valley Comment
  CHSC7749  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-11 103 Lassen West city limits of Susanville at 'Inspiration Point. 1341 Comment
  CHSC91291  Castilleja applegatei subsp. pinetorum Lowell Ahart; John Dittes 2005-6-2 11929 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
  UC1924581  Castilleja applegatei subsp. pinetorum Debra Valov 2006-5-28 2006010 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1291 Comment
  CAS-BOT-BC243710  Castilleja applegatei var. pinetorum Clarence R. Quick 1961-6-21 61 -31 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CHSC68874  Castilleja arachnoidea Vernon Oswald; Lowell Ahart 1997-6-24 8642 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC5897  Castilleja campestris subsp. campestris J. B. Kimsey 1946-6-11 Lassen Pine Creek near Eagle Lake. 1584 Comment
  CHSC99527  Castilleja campestris subsp. campestris Lowell Ahart; John Dittes 2008-6-20 14978 Lassen Edge of vernal pools, 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
  UC1137570  Castilleja campestris subsp. campestris A. Simontacchi 1940-6-30 913 Lassen s shore Government Lake; Lassen National Park, Halls Flat Quad. 1524 Comment
  HSC82247  Castilleja lacera Thomas W. Nelson, Jane P. Nelson 1980-7-6 5985 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS74943  Castilleja lacera T. I. and F. M. Chuang 1975-7-23 7556 Lassen just w Westwood (area of golf course) Comment
  JEPS88512  Castilleja lacera Vernon H. Oswald and Lowell Ahart 1996-6-24 7842 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1012486  Castilleja lacera Francis W. Pennell 1940-6-7 25723 Lassen 4-5 mi w Nubieber (Route 299) 1097 Comment
  CHSC1714  Castilleja linariifolia 1944-7-5 Lassen Bogard. 1722 Comment
  CHSC63419  Castilleja linariifolia Vernon H. Oswald 1994-7-8 6369 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
  CDA41236  Castilleja linariifolia T. C. Fuller 1980-8-5 20313 Lassen Along east side of Tuledad Road, 7.4 km. southeast of the campground on the east shore of Dodge Reservoir, northeast of Ravendale. 0 Comment
  CAS-BOT-BC244886  Castilleja miniata Louella Bass 1973-6-17 116 Lassen Elysian Valley. Plants of the Sierra Nevada 1325 Comment
  JEPS10806  Castilleja miniata Brown and Wieslander 1922-7-23 67 Lassen Martin Springs; Eagle Lake Comment
  RSA505356  Castilleja miniata R. C. Bacigalupi, G. Thomas Robbins 1955-7-20 5402 Lassen Along East Creek on grade 2.3 miles south of and below Patterson Ranger Station (and 0.8 mile s. of Lassen - Modoc County line). Southern end of the Warner Mts. 2012 Comment
  CHSC12962  Castilleja pilosa K. R. Stern 1974-6-26 5871 Lassen Open sagebrush scrub adjacent to Pine Creek, 3.7 mi n of intersection between County Rd. A-21 to Westwood and Hwy. 44, on e side of Hwy. 44. Comment
  CHSC89725  Castilleja pilosa L. P. Janeway 2004-6-26 8151 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  HSC82214  Castilleja pilosa Thomas W. Nelson, Jane P. Nelson 1980-7-6 5995 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0047057  Castilleja pilosa L. P. Janeway 2004-6-26 8151 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  RSA505409  Castilleja psittacina R. C. Bacigalupi, S. Galen Smith 1957-6-28 6004 Lassen 5.9 miles south of Madeline. 1616 Comment
  CHSC108002  Castilleja tenuis Lowell Ahart; John Dittes 2011-6-20 17499 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC116102  Castilleja tenuis Lowell Ahart; John Dittes 2015-7-13 20314 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
  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
  CHSC93698  Castilleja tenuis Lowell Ahart; John Dittes 2005-6-2 11962 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  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
  JEPS114750  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
  RSA0105574  Castilleja tenuis Lowell Ahart, John Dittes 2013-7-22 18840 Lassen About 30 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1137685  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen Forest 1743 Comment
  NY608460  Caulanthus major var. nevadensis N. H. Holmgren 1978-6-11 8923 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  CAS-BOT-BC52048  Ceanothus prostratus John Thomas Howell 1976-7-19 51982 Lassen on Gold Run Creek Southwest of Susanville 1386 Comment
  CHSC4984  Ceanothus prostratus R. Clicquennoi 1967-7-4 5 Lassen 5 mi s of Eagle Lake Biology Station on Gallatin Beach Rd. Comment
  SEINET10493654  Ceanothus prostratus Mary Merello 1993-6-28 Merello 748 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1281294  Ceanothus prostratus H. E. McMinn 1941-8-27 5400 Lassen 3.5 mi from Pine Cone Inn (5 mi from Newbieber [Neubieber?]); 5 mi from Neubeiber Comment
  HSC22955  Ceanothus velutinus John Pratt 1970-6-21 28 Lassen 1738 Comment
  RSA716140  Ceanothus velutinus L. Ahart 2005-6-2 11943 Lassen 1.5 miles NE of the Anderson Ranch home, Long Valley, 6 miles (air) N of intersection of Scott Road and Hwy 70, 7.5 miles (air) NW of Hallelujah Jct. 1602 Comment
  CAS-BOT-BC184969  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  RSA186849  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  CDA7252  Centaurea maculosa Lee Wheeler 1962-8-15 Lassen Doyle area. 0 Comment
  CDA35515  Centaurea squarrosa CDFA Staff 1986-6-18 s.n. Lassen Near Nubieber, off Hwy 299. 0 Comment
  CDA7337  Centaurea squarrosa T. C. Fuller, W. T. Parsons 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley. 0 Comment
  UC1533151  Centaurea virgata subsp. squarrosa G. Schoolcraft 1986-7-28 1666 Lassen about 3.5 mi SW of Nubieber (along Hwy 299) 1402 Comment
  CAS-BOT-BC106074  Centaurea virgata subsp. squarrosa Barrett Anderson 1986-7-9 3128 Lassen Road to Day, about 2.4 km N of Rte 299. 1065 Comment
  OBI4697  Centaurea virgata subsp. squarrosa T. C. Fuller, W. T. Parsons 1960-7-26 4873 Lassen 4 mi NW of Nubieber, Big Valley Comment
  CHSC66722  Cerastium fontanum subsp. vulgare Vernon H. Oswald; Lowell Ahart 1996-8-1 8126 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. On the downhill side of the road. 1737 Comment
  CAS-BOT-BC136988  Cercocarpus betuloides var. betuloides Alice Eastwood; John Thomas Howell 1940-6-11 7965 Lassen Eastern Fall River Valley Comment
  RSA0027356  Chaenactis John F. Emmel 1994-7-17 1331 Lassen Summit area of Observation Peak. 2378 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
  CHSC105256  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2010-7-31 16984 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
  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
  HSC42418  Chaenactis douglasii var. douglasii Barbara Kelly 1977-8-9 560 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  HSC81187  Chaenactis douglasii var. douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 5993 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC276611  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-24 3737 Lassen 2 miles S of Ravendale 1464 Comment
  SEINET7450277 Image available Chaenactis nevadensis D. W. Kyhos 1967-9-1 67 -87 Lassen Within 1/2 mile north of Hat Lake Comment
  CAS-BOT-BC141744  Chamaebatiaria millefolium John Thomas Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  CHSC4857  Chamaebatiaria millefolium R. Carter 1967-7-13 588 Lassen On the rd to Eagle Lake, Biology Station and Willow Creek. 1584 Comment
  SEINET10937236  Chamaebatiaria millefolium Mary Susan Taylor 1974-5-4 Taylor 220 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CHSC36489  Chamaesaracha nana Theresa Costa 1982-6-4 38 Lassen Jct of rd e Murrers Upper Meadow and rd to Dry Lakes. Comment
  HSC29997  Chamaesaracha nana D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19160 Lassen 3 mi. N of Westwood Comment
  UC1125090  Chamaesaracha nana A. Simontacchi 1940-6-8 831 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1609091  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and Lowell Ahart 1993-7-8 5660 Lassen 1.9 mi n Hwy 44 (Pittville Rd., on se edge of lake, between the rr and the lake); Poison Lake 1709 Comment
  SEINET9445226  Chamaesyce serpyllifolia M. J. Williams 1974-7-29 74 -L-47 Lassen S of Hwy 70, 2 miles W of Hallelujah Junction. 1494 Comment
  UC1924223  Chamaesyce serpyllifolia var. serpyllifolia Debra Valov 2004-6-8 2004251 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC383107  Chamerion angustifolium subsp. circumvagum Andrew Townesmith; Karen M. Meyer 2007-7-20 838 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
  JEPS95909  Chenopodium album Lowell Ahart 1999-9-13 8222 Lassen about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  JEPS97785  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CAS-BOT-BC473050  Chenopodium desiccatum Ynez Whilton Winblad 1935-10-1 s.n. Lassen Horse Lake Comment
  SEINET4171909  Chenopodium leptophyllum M. J. Williams 1974-7-26 74 -L-36 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  CHSC58839  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1992-7-16 5103 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
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Nov 1 2014
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CAS-BOT-BC247864  Chorizanthe watsonii John Thomas Howell 1934-6-10 11854 Lassen 4 miles south of Omira Comment
  CAS-BOT-BC36325  Chrysolepis sempervirens George W. Gillett 1957-7-26 905 Lassen Point of rocks wets of Butte Lake outlet and above trail 1844 Comment
  CHSC78478  Chrysothamnus humilis Vernon H. Oswald 2000-7-31 9945 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  UCD130269  Chrysothamnus viscidiflorus Beecher Crampton 1954-5-11 1883 Lassen Beckwourth Pass. 1588 Comment
  CHSC65295  Chrysothamnus viscidiflorus subsp. lanceolatus Vernon H. Oswald; Lowell Ahart 1995-8-14 7190 B Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville. Along this section of road. 1645 Comment
  CAS-BOT-BC100758  Chrysothamnus viscidiflorus subsp. puberulus P. Monnet 1913-7-1 792 Lassen Hot Spring Peak 1524 Comment
  CHSC7637  Chrysothamnus viscidiflorus subsp. puberulus Beverley J. Wise 1969-9-29 15 Lassen 4.5 mi. north of Susanville on Hwy 139. Roadside. 1371 Comment
  CAS-BOT-BC105908  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 1271 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  SEINET5727103 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
  UC527342  Chrysothamnus viscidiflorus subsp. viscidiflorus C. B. Wolf 1931-9-4 Lassen 2.6 mi from Bieber (on the road to Alturas); Big Valley 1267 Comment
  UC921129  Chrysothamnus viscidiflorus subsp. viscidiflorus Vesta Holt 1945-8-11 Lassen Eagle Lake Comment
  UC1186580  Chylismia claviformis subsp. integrior G. I. Stage and R. W. Thorp 1959-6-20 59 -116 Lassen 9.6 mi n Litchfield Comment
  RSA299121  Cinna latifolia J. T. Howell, Gordon H. True 1973-8-1 50346 Lassen Gold Run Creek road, south of Susanville, Diamond Range. 1951 Comment
  CHSC23554  Cirsium andersonii W. O. Baum 1971-7-6 49 Lassen Slope of Gallatin Peak. 1981 Comment
  NY409534  Cirsium arvense G. Schoolcraft 1988-8-10 1847 Lassen In Willow Creek Valley along Hwy. 139. 149.4 Comment
  SEINET7451109 Image available Cirsium cymosum var. cymosum J. A. Young 1982-6-9 s.n. Lassen Meyers Ranch, Adin, CA 1280 Comment
  CAS-BOT-BC278088  Cirsium douglasii var. breweri Alice Eastwood; John Thomas Howell 1940-6-15 8306 Lassen Willow Creek near Hayden Hill Comment
  CDA1525  Cirsium ochrocentrum T. C. Fuller 1980-8-5 20311 Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  CAS-BOT-BC280423  Cirsium ochrocentrum Lee Wheeler 1951-9-1 s.n. Lassen On Clarence Hoffman Ranch Comment
  CDA1519  Cirsium ochrocentrum var. ochrocentrum Lee Wheeler 1952-8-29 s.n. Lassen Honey Lake Clarence Hoffman Ranch (near Janesville Grade/ Parker Creek?) 0 Comment
  RSA127309  Cirsium remotifolium var. rivulare J. T. Howell 1952-7-11 28836 Lassen Just S of Oregon line on road to Smith River, Del Norte County Comment
  CAS-BOT-BC286309  Cirsium scariosum Louella Bass 1973-6-17 117 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC286310  Cirsium scariosum James Jokerst 1983-7-25 1894 Lassen Near Madeline Plains 1614 Comment
  JEPS109645  Cirsium scariosum Dean W. Taylor 2002-6-21 18176 Lassen Windmill Flat (lying ca. 1.5 mi NW of Snider Lake), north end of the flat near the base of the windmill 1706 Comment
  CDA1594  Cirsium undulatum T. C. Fuller 1965-10-13 14201 Lassen Madeline Plains E base of Dry Valley Ridge, 10 mi. W of Termo, 3 mi N of Termo-Grasshopper Rd. Comment
  CAS-BOT-BC285730  Cirsium vulgare John Thomas Howell; Gordon H. True 1973-8-1 50160 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC163164  Clarkia lassenensis A. M. Vollmer; L. Beane 1953-7-1 98 Lassen Along Halls Flat road, beginning 6 mi. W of Susanville to McArthur 1554 Comment
  UC1924236  Clarkia lassenensis Debra Valov 2004-6-9 2004256 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1270 Comment
  UCR244103  Clarkia lassenensis Jim Andre, G. L. Clifton 1993-6-9 19699 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UC930728  Clarkia purpurea subsp. quadrivulnera C. L. Hitchcock 1940-5-26 6624 Lassen 2 mi w Fall River Mills 1341 Comment
  CAS-BOT-BC163410  Clarkia purpurea subsp. quadrivulnera H. D. Ripley; R. C. Barneby 1943-6-13 5718 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC164867  Clarkia rhomboidea Louella Bass 1978-6-10 78 -1 Lassen Elysian Valley 1325 Comment
  CHSC80231  Clarkia stellata Jeanne Boze 1981-6-12 108 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 Comment
  CHSC63414  Claytonia rubra subsp. depressa Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6311 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  CHSC64847  Claytonia rubra subsp. depressa Vernon H. Oswald 1995-6-26 6940 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  JEPS94123  Claytonia rubra subsp. depressa Vernon H. Oswald and Lowell Ahart 1998-5-22 9124 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  CAS-BOT-BC443732  Claytonia rubra subsp. rubra A. M. Vollmer; L. Beane 1953-7-1 75 Lassen Along [Halls Flat] road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  SBBG12321  Claytonia rubra subsp. rubra A. I. Richardson 1961-5-30 6 Lassen rd S of Eagle Lake 1402 Comment
  NY222716  Cleome platycarpa G. H. True Jr. 1938-7-8 904 Lassen North of Hot Spring Mountain. 1371.6 Comment
  NY222741  Cleome platycarpa D. W. McNeal 1978-5-30 2123 Lassen Along Hwy. #395, 3.4 mi. N of the jct of Co. Hwy. #320 (Wendel Rd.) at the Nobel Emigrant Trail Historical Marker. Comment
  NY222830  Cleome platycarpa G. H. True Jr. 1937-6-27 792 Lassen Near Skeedaddle. 1524.0 Comment
  SEINET8584734  Cleomella hillmanii var. hillmanii W. Harnach 2010-6-1 1241 Lassen Approx 10 miles NE of Doyle on Fort Sage Road then 1.9 miles N on Cal-Neva Road. Honey Lake Valley. Comment
  RSA294658  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  CAS-BOT-BC423225  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  CAS-BOT-BC423222  Cleomella plocasperma Luella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  UC1032573  Collinsia parviflora A. Simontacchi 1940-5-10 691 Lassen 7.3 mi w of Harvey Mountain Lookout (Lassen National Forest); Lassen National Forest 1752 Comment
  UC1143037  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1737 Comment
  UC1951082  Collinsia parviflora Debra Valov 2009-4-24 2009009 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  RSA152668  Collinsia parviflora I. L. Wiggins, Dorothy Wiggins 1961-6-10 16322 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  RSA60368  Collinsia parviflora E. K. Balls 1950-5-9 15951 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  SBBG12810  Collinsia parviflora A. I. Richardson 1961-5-30 5 Lassen 9 mi S of Eagle Lake 1402 Comment
  HSC75889  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19259 Lassen Harvey Valley near Cone Springs Comment
  CHSC4440  Collomia grandiflora K. R. Stern 1967-6-30 2450 Lassen West central side of Eagle Lake. 1554 Comment
  RSA523347  Collomia grandiflora G. H. True 1938-7-9 906 Lassen Near Horse Lake 1524 Comment
  SEINET12319536  Collomia grandiflora N. E. Heiken 1978-1 87 Lassen Lower Dry Lakes, E of Eagle L 1573 Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  HSC30185  Collomia tinctoria D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19261 Lassen Harvey Valley near Cone Springs Comment
  RSA712933  Collomia tinctoria L. P. Janeway 2005-7-4 8468 Lassen Ridge top north above Long Valley; 0.4 km west of Road 34N41. High Cascade Range. 1752 Comment
  UC1037277  Collomia tinctoria Leo Whitney 1934-7-22 1749 Lassen 6 mi w lower end of Eagle Lake; Lassen National Forest, Antelope Mountain 1981 Comment
  UC1123659  Collomia tinctoria A. Simontacchi 898 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1609177  Collomia tinctoria Vernon H. Oswald and Lowell Ahart 1993-6-28 5597 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  CHSC66260  Comarum palustre Vernon H. Oswald; Lowell Ahart 1996-6-24 7891 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the springs on the E side of the meadow. 1633 Comment
  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
  JEPS121063 Image available Convolvulus arvensis M. L. Wheelis 1964-7-1 123 Lassen HIghway 395, 3 miles north of Hallelulah Junction. Comment
  POM33281  Conyza canadensis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1483856  Corallorhiza maculata G. Schoolcraft 1980-7-15 308 Lassen w Bieber; Big Valley Mountain timber sale area (Bureau of Land Managem 1798 Comment
  JEPS17408  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 mi w of Nevada Line, 17.5 mi e of US Hwy 395); draingage of Rush Creek 1341 Comment
  JEPS95913  Cordylanthus maritimus subsp. canescens Lowell Ahart 1999-9-13 8218 Lassen about 150 yards southwest of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  POM43099  Cordylanthus maritimus subsp. canescens Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  UC761815  Cordylanthus ramosus R. F. Hoover 1940-10-1 4655 Lassen Jonesville Comment
  SD43504  Cornus stolonifera Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground, above Milford. 1525 Comment
  UC581256  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2294 Lassen s Janesville; Thompson Peak 2133 Comment
  UC773983  Crepis acuminata L. R. Short 1936-7-9 S- 509 A Lassen Burgess Spring Experiment 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
  CHSC36849  Crepis bakeri M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno. Comment
  CHSC60813  Crepis bakeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 Lassen N of Hwy 44 on Rd. 33N06, on the flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In woods bordering the road. A drying vernal pool is located in a forest opening nearby. 1798 Comment
  CAS-BOT-BC291549  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-8 2222 Lassen Six miles south of Ravensdale 1676 Comment
  CAS-BOT-BC291553  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-10 2315 Lassen Black Mountain about a mile below the summit 1950 Comment
  JEPS87521  Crepis modocensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5614 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  UC1536772  Crepis occidentalis G. H. True 1936-6-25 567 Lassen slopes e Harvey Ranger Station; Harvey Valley 1767 Comment
  UC581304  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2352 Lassen sw-facing slope of mts. along hwy from McArthur to Bieber; Big Valley Mts. 1100 Comment
  CAS-BOT-BC376557  Crepis occidentalis subsp. conjuncta A. A. Heller 1938-6-23 15201 Lassen Valley east of Fredonyer Pass 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
  POM203850  Crepis occidentalis subsp. pumila J. T. Howell 1934-6-10 11872 Lassen Janesville Comment
  CHSC5206  Crepis pleurocarpa 1944-6-28 Lassen Eagle Lake. 1584 Comment
  CHSC93565  Crepis pleurocarpa Lowell Ahart; John Dittes 2005-6-2 11934 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  CHSC67080  Cressa truxillensis Jeanne Boze 1981-6-11 106 Lassen Outer edge of Horse Lake, 11 1/2 mil. from 139 on Horse Lake Rd. 1539 Comment
  UC23225  Cressa truxillensis J. Burtt Davy Jun 17 1897-Jun 24 1897 3395 Lassen Honey Lake Valley, Amedee Comment
  UC767881  Crypsis vaginiflora R. F. Hoover 1940-10-10 4680 Lassen Johnstonville Comment
  CAS-BOT-BC189241  Cryptantha John Thomas Howell; Gordon H. True 1973-8-1 50215 Lassen E slope of Diamond Range, S of Susanville 2164 Comment
  SBBG19764  Cryptantha affinis C. B. Hardham 1961-6-17 7505 Lassen Baxter Crk, S of Susanville Comment
  UC1137644  Cryptantha affinis A. Simontacchi 1940-5-28 776 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  CHSC13453  Cryptantha circumscissa J. Pitts 1972-6-23 267 Lassen 50 yds. E of Eagle Lake Field Station. Comment
  CHSC7765  Cryptantha circumscissa Beverly J. Wise 1969-5-18 77 Lassen 17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  JEPS107310  Cryptantha circumscissa Lowell Ahart, John Dittes 2005-6-1 11890 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  UC1063881  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  UC577869  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  SEINET201635  Cryptantha humilis Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8465 Lassen 50 miles southeast of Susanville Comment
  UC402818  Cryptantha torreyana Milo S. Baker Jul 1912 Lassen Pine Creek Comment
  RSA123892  Cryptantha torreyana G. A. Fischer, I. Johnson 1933-7-12 F- 222 Lassen Near Sheep bedground. 1723 Comment
  CHSC93552  Cryptantha watsonii Lowell Ahart; John Dittes 2005-6-2 11949 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
  UCR243134  Cuscuta approximata Jerry Schmierer 1986-9-1 s.n. Lassen Don Blickenstaff Ranch 1220 Comment
  OBI75868  Cuscuta occidentalis Anthony Baniaga 2011-8-9 492 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
  CHSC43469  Cynoglossum occidentale Lowell Ahart; John Thomas Howell 1974-7-9 515 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  CHSC60861  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1993-6-28 5624 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. On the bed of a small branch of Pine Creek 1737 Comment
  CHSC66868  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir SW of Westwood. Along the receding marshy edge of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  CAS-BOT-BC70537  Cystopteris fragilis Clare B. Hardham 1961-6-16 7461 Lassen Diamond Peak Comment
  CHSC7699  Dactylis glomerata Beverley J. Wise 1969-5-23 128 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CHSC5924  Damasonium californicum P. Balch 1955-6-25 Lassen Pine Creek, Eagle Lake. 1584 Comment
  UC1130605  Damasonium californicum Robert W. Gardner 1937-6-26 G- 25 Lassen Poison Lake Halls Flat Quad., Poison Lake Comment
  POM260301  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET6188248  Damasonium californicum R. F. Thorne, Larry E. De Buhr 1975-1 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 iles south of Modoc county line. 1615 Comment
  UCD21047  Damasonium californicum E. Bortiri 2002-7-19 WFC 83 Lassen Bear Valley Reservoir, Rd 35N08 to Long Valley from Hwy 44, Lassen Co. 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
  SD51285  Deinandra lobbii Darley F. Howe 1961-8-4 3135 Lassen 11.5 miles east of McArthur on U. S. Highway 299. Comment
  JEPS79213  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  CHSC106590  Delphinium andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  UC1334520  Delphinium andersonii G. A. L. Mehlquist and J. A. Jenkins 1940-5-31 21 Lassen Route 395 3.3 mi n Ravensdale 1584 Comment
  UC9127  Delphinium andersonii Mrs. C. C. Bruce June 1898 2238 Lassen Shumway Comment
  UCD95650  Delphinium andersonii James D. Jokerst 1983-5-30 1794 Lassen Ca.1.5 mi. N of Eagle Lake, ca. 50 m W of Hwy. 139, ca. 1.0 I N of Eagle Lake Rd. Comment
  CHSC6242  Delphinium glaucum A. Santos 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CAS-BOT-BC9942  Delphinium nudicaule A. A. Heller 1940-5-22 15663 Lassen Hill back of Westwood Cemetery on a cut over slope. This station is sevral miles west of the type station. Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 Comment
  CAS-BOT-BC116044  Delphinium nuttallianum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49180 Lassen Sierra Nevada, Elysian Valley northwest of Janesville. 1325 Comment
  CHSC36459  Delphinium nuttallianum Susan H. Euing 1982-6-4 13 Lassen Ca. 1/2 mi e of forest station rd 5.16 heading toward Murrers Upper Meadow. Comment
  CHSC67294  Delphinium nuttallianum James D. Jokerst 1991-5-29 3306 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  UC1584004  Delphinium nuttallianum G. Schoolcraft 1990-5-15 2051 Lassen about 4 mi s Nubieber; John's Valley area 1310 Comment
  JEPS122164  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-8-20 19719 Lassen 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. Comment
  UC1037093  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1934-7-15 2211 Lassen ca. 15 mi. w. Eagle lake (Crater Lake, Lassen Nat'l Forest); Lassen Nat'l Forest, Crater Lake 2133 Comment
  UC506928  Deschampsia cespitosa subsp. cespitosa George A. Fischer and Irwin H. Johnson 1933-7-14 F 244 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  UC60239  Deschampsia cespitosa subsp. cespitosa M. S. Baker and F. Nutting July 1894 Lassen Eagle Lake 1524 Comment
  HSC100183  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 2011-8-15 13379 Lassen Along Hwy. 36 at the intersection with the Bizz Johnson Trailhead Road. Comment
  UC188945  Deschampsia danthonioides Milo S. Baker 1900-7-5 Lassen Dixie Valley Comment
  UC53584  Deschampsia danthonioides M. S. Baker and Frank Nutting 1894-7-2 Lassen w. side Dixey Mts. Dixey Mts. Comment
  RSA268159  Deschampsia danthonioides J. R. Reeder, C. G. Reeder 1972-6-1 5630 Lassen 2 miles S. of Nubieber. 1037 Comment
  UC1100290  Deschampsia elongata Malcolm A. Nobs and S. Galen Smith 1949-7-21 1058 Lassen 4 mi. n. Madeline Comment
  UC1131561  Deschampsia elongata A. Simontacchi 1940-7-3 919 Lassen 3.5 mi. w.-s.w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UCD63431  Deschampsia elongata L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  UCD63522  Deschampsia elongata Malcolm A. Knobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles N of Madeline. Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  JEPS114360  Descurainia nelsonii Lowell Ahart, John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  SEINET5343182  Descurainia paradisa var. paradisa F. B. Headley 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  CHSC4810  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected at Eagle Lake Biology Station, e central shore of Eagle Lake. 1524 Comment
  UC1136915  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  UC773932  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experiment Range; Lassen Forest 1833 Comment
  NY694154  Descurainia sophia G. Schoolcraft 1993-5-25 2268 Lassen North and South of Smoke Creek Road 1463 Comment
  UC1776704  Descurainia sophia G. Schoolcraft 1993-5-25 2268 Lassen N and S of Smoke Creek road 1463 Comment
  SEINET10841501  Descurainia sophia Mary Susan Taylor 1974-1 Taylor 258 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC3327  Dichelostemma multiflorum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  CHSC86974  Dieteria canescens var. shastensis L. P. Janeway 2001-6-20 7202 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
  UC1136761  Dieteria canescens var. shastensis Irwin H. Johnson 1933-7-14 F 268 Lassen Lassen Forest 1752 Comment
  CAS-BOT-BC153673  Diplacus mephiticus Clare B. Hardham s.n. Lassen Gold Run Creek south of Susanville Comment
  SEINET8350435  Diplacus mephiticus A. A. Heller 1938-6-22 15188 Lassen one mile east of Westwood in the Arid Transition Life Zone. 1524 Comment
  CAS-BOT-BC151432  Diplacus nanus Clarence R. Quick 1962-6-17 62 -22 Lassen Swains Hole, in sagebrush flat south of Blacks Mountain Experimental Station 1554 Comment
  OBI76920  Diplacus pygmaeus Anthony Baniaga 2011-7-9 435 Lassen Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE 1718 Comment
  CAS-BOT-BC208722  Distichlis spicata G. Schoolcraft 1986-9-10 1675 Lassen Along N. shore of Eagle Lake Comment
  CAS-BOT-BC208725  Distichlis spicata A. A. Beetle 1941-6-28 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak Comment
  UC1533158  Distichlis spicata G. Schoolcraft 1986-9-10 1675 Lassen Along N shore of Eagle Lake 1554 Comment
  CHSC4945  Dodecatheon alpinum R. Carter 1967-6-23 549 Lassen 25 yds w of dam in Murrer's Meadow. Along rd to Murrer's Meadow. 1584 Comment
  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
  UC1776683  Dodecatheon conjugens G. Schoolcraft 1999-5-5 2814 Lassen Along Tuledad Road about 2 mile NE of Dodge Reservoir 1859 Comment
  CHSC6234  Dodecatheon jeffreyi M. West 1946-6-20 Lassen Meadow above Grasshopper Valley. 1828 Comment
  JEPS127713  Downingia bacigalupii Alejandro Brambila, Michael Dolan 2016-7-20 CA 320 -168 Lassen Portuguese Flat Road North. Comment
  POM312397  Downingia bacigalupii Verne Grant, Irving Schneider 1947-7-31 8209 Lassen Irrigation ditch NE quarter of George Williams section 19, Madeline Plain. Comment
  UC1483852  Downingia bacigalupii G. Schoolcraft 1980-7-15 313 Lassen n end Nelson Corral Reservoir 1804 Comment
  UCD55038  Downingia bacigalupii Gerald Dickinson 1963-7-3 73 Lassen U.S. Highway 299; 1 mile west of Bieber. 1249 Comment
  SBBG126109  Downingia bacigalupii L. Ahart, J. Dittes 2010-7-31 17013 Lassen ca 2300 feet N of where rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1510 Comment
  POM260453  Downingia bicornuta C. L. Hitchcock 1940-5-26 6645 Lassen Overflow of Pitt River, 1 mile W of Bieber. Comment
  JEPS22792  Downingia bicornuta var. bicornuta Robert W. Gardner 1936-1 Lassen Poison Lake (Poison Lake is about 6 mi se of Halls Flat R.S. in sw Lassen County--R. Bacigalupi, 1957) Poison Lake 1676 Comment
  UC157670  Downingia bicornuta var. bicornuta Milo S. Baker 1894-7-12 Lassen Pine Creek 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
  JEPS108509  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 223 -95 Lassen Large vernal pool W of Champs Flat (W of Eagle Lake). Corner of 33N56Y and 33N06. Comment
  JEPS3751  Downingia insignis Helen-Mar Wheeler 1952-7-11 Lassen s of Madeline Comment
  JEPS106977  Downingia insignis Lisa Schultheis 1995-6-27 226 -95 Lassen East side of 395, 1.6 miles south of Ravendale Comment
  JEPS94484  Draba verna Vernon H. Oswald and Lowell Ahart 1997-5-27 8522 Lassen 3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04 1731 Comment
  SEINET5342791  Draba verna J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA. Comment
  CHSC69125  Drosera anglica Vernon Oswald; Beth Corbin, Gary Schoolcraft 1997-8-5 8812 Lassen North slope of Robbers Creek at Robbers Spring, so ... Field redacted by CHSC, contact the data manager for more information 1798 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
  UC1143045  Drymocallis lactea L. R. Short and J. Warren 1936-6-10 S- 425 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1853 Comment
  UC1609244  Drymocallis lactea var. lactea Vernon H. Oswald and Lowell Ahart 1993-6-28 5613 Lassen ne Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvey Mtn); Harvey Mtn., ne of Poison Lake, nne of Burgess Meadow 1798 Comment
  CHSC112423  Elatine Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18752 Lassen Plants near pond, about 80 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCR227660  Elatine R. F. Thorne, Larry E. DeBuhr 1975-8-22 47213 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  SEINET9342679  Elatine californica Robert Thorne, DeBuhr, Larry 1975-8-22 47212 Lassen Lassen County Comment
  RSA252456  Elatine gracilis R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39135 Lassen Said Valley Reservoir. Comment
  CAS-BOT-BC113616  Eleocharis acicularis George Wilson Gillett 1957-7-28 933 Lassen Moist shore of Widow Lake. 2072 Comment
  CAS-BOT-BC113591  Eleocharis acicularis John Thomas Howell 1959-9-23 34892 Lassen Juniper Lake camp grounds, Lassen Park 2057 Comment
  CAS-BOT-BC113202  Eleocharis parishii R. F. Thorne; C. W. Tilforth 1969-9-6 39258 Lassen Sandy flats along Long Valley Creek, ca. 14 mi SE of Milford. 1310 Comment
  UCD32663  Elymus X saundersii Beecher Crampton 1954-7-5 2061 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 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
  HSC10975  Elymus caput-medusae T. F. Newman 1965-7-28 6540 Lassen N side of Skedaddle Mtn., E side of Wendel. Comment
  CHSC5254  Elymus cinereus 1944-8-12 Lassen Eagle Lake. 1615 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  UCD61535  Elymus elymoides L. D. Whitney 1935-6-25 Lassen Ashurst Mt. Comment
  UCR7841  Elymus elymoides Marilyn Malin 1968-6-21 248 Lassen Along roadside, near tree blazed to indicate path to the ice caves on the west side of Eagle Lake Comment
  UC1024958  Elymus elymoides subsp. elymoides Leo Whitney 1935-6-24 3304 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  CHSC118823  Elymus elymoides var. californicus L. P. Janeway; B Castro 2015-6-5 11762 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
  UC7793970  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
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Aug 1 2007
  CAS-BOT-BC206730  Elymus glaucus subsp. glaucus Clare B. Hardham 1971-8-22 18401 Lassen Aspen Swamp, Diamond Mountain 2133 Comment
  CAS-BOT-BC234094  Elymus multisetus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49447 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  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
  UCR7791  Elymus salinus Marilyn Malin 1968-7-10 260 Lassen Great Basin, south side of Hwy 395 at the Hurlong turnoff 1235 Comment
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Mar 9 2010
  CHSC117482  Elymus spicatus L. P. Janeway; B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  RSA0105549  Elymus spicatus L. P. Janeway, B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  UC1024951  Elymus trachycaulus Leo Whitney 1935-6-25 3314 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UCD62734  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CHSC29894  Elymus trachycaulus subsp. trachycaulus Robin L. Ondricek 1978-8-2 113 Lassen North edge of dam at Murrers Upper Meadow. 1548 Comment
  SEINET7727869  Ephedra nevadensis Unknown Lassen Susanville Comment
  CAS-BOT-BC81878  Ephedra viridis M. Bourell 1997-5-31 5882 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  HSC1306  Ephedra viridis J. W. Bosworth 1965-5-1 31 Lassen 20 mi. N of Susanville on Hwy. 395 1220 Comment
  HSC1308  Ephedra viridis K. P. St. John 1965-5-6 17 Lassen 13 mi. N of Litchfield on Hwy. 395 Comment
  UC119065  Ephedra viridis Mrs. R. M. Austin 1876-7-1 285 Lassen e of Susanville; Antelope Grade Comment
  CHSC25092  Epilobium brachycarpum K. R. Stern 1967-7-1 2441 Lassen Murrer Meadow Road, ca. 2.5 mi. SE of Eagle Lake Biology Station. 1554 Comment
  CHSC29866  Epilobium brachycarpum Robin L. Ondricek 1978-6-27 72 Lassen .6 mi n of Five Corners along road to ELFS. 1706 Comment
  JEPS121253  Epilobium brachycarpum Lowell Ahart 2013-7-22 18845 Lassen W margin of duck field, about 10 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA702600  Epilobium brachycarpum L. P. Janeway 2004-6-26 8146 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1136768  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  UCR67373  Epilobium brachycarpum George K. Helmkamp 1990-9-23 E- 17 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  RSA0105583  Epilobium campestre Lowell Ahart, John Dittes 2013-7-22 18850 Lassen 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
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC99524  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
  RSA0105579  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC95313  Epilobium oregonense Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 688 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM46398  Epilobium oregonense Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  RSA512825  Epilobium paniculatum J. T. Howell, Gordon H. True 1973-7-31 50028 Lassen Sierra Nevada: On road from Janesville to Thompson Peak, Diamond Range 1738 Comment
  CHSC66369  Equisetum laevigatum Vernon H. Oswald; Lowell Ahart 1996-6-17 7820 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  UC62615  Equisetum laevigatum Baker and Nutting 1894-7-5 Lassen <Dixay> Valley 1066 Comment
  CAS-BOT-BC57301  Equisetum laevigatum Barbara Shervanick 1974-5-7 1262 Lassen Highway 395, just south of Milford, Cascade Range 1371 Comment
  CAS-BOT-BC174188  Eremogone congesta var. congesta Mrs. R. M. Austin; Mrs. Bruce 1898-6-1 2156 Lassen [Madaline] Madeline Plains Comment
  CAS-BOT-BC174203  Eremogone congesta var. congesta Louella Bass 1973-6-14 103 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC174264  Eremogone congesta var. simulans Walter Knight; Irja Knight; James Vale; Keith Wagnon 1981-5-24 4120 Lassen Between Adin and Willow Creek Comment
  CHSC87117  Eremogone congesta var. subcongesta L. P. Janeway 2001-6-20 7199 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
  RSA0057703  Eremogone congesta var. subcongesta Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CAS-BOT-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC159998  Eremothera boothii subsp. alyssoides Philip A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  JEPS29748  Eremothera boothii subsp. alyssoides Rimo Bacigalupi and L. R. Heckard 1962-5-28 8502 A Lassen 2 mi e Wendel Junction (n of Honey Lake, on road from US 395 past Flanagan to Pyramid Lake NV) 1219 Comment
  UC1483875  Eremothera boothii subsp. alyssoides G. Schoolcraft 1980-5-16 234 Lassen on Wendell Hwy n kiln 1280 Comment
  UC1483823  Eremothera minor G. Schoolcraft 1980-6-11 267 Lassen w Wendel 1219 Comment
  SEINET14592139  Eriastrum signatum R. R. Halse 2004-7-21 6669 Lassen At junction of US Hwy 395 and State Road A 26, ca 11 miles SE of Milford. 1274 Comment
  CAS-BOT-BC515169  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen Near Plumas Junction Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  RSA0124144  Eriastrum signatum R. F. Thorne, C. W. Tilforth 1969-9-6 39264 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  RSA0124149  Eriastrum signatum Christopher Davidson 1975-6-7 2763 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCD54567  Eriastrum sparsiflorum Ellen Dean; Dawn Cunningham 2005-10-25 2750 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  JEPS116749  Eriastrum sparsiflorum David Gowen 2006-8-2 657 Lassen South of Constantia on Red Rock Rd. just east of Hwy 395. Comment
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  CHSC36978  Ericameria bloomeri M. S. Taylor; B. Hammond 1982-8-27 5054 Lassen Crystal Peak area, Diamond Mts, ca. 6 air mi sw of Doyle. 2377 Comment
  UC1118874  Ericameria bloomeri A. Simontacchi 1940-7-7 929 Lassen 0.8 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1523743  Ericameria bloomeri Gary Schoolcraft 1981-8-25 565 Lassen w side of Eagle Lake (along main road) Comment
  SEINET7950669 Image available Ericameria nauseosa A. Onisko, J. Jaggers, S. Massed, D. Mathews 2011-10-24 NV 030 -669 Lassen NE of Doyle and NE of Fort Sage Mountains, OHV recreation area 1230 Comment
  SEINET7950731 Image available Ericameria nauseosa var. hololeuca Unknown 1921-9-11 s.n. Lassen South side of Honey Valley Comment
  CAS-BOT-BC298173  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  JEPS21524  Ericameria nauseosa var. oreophila W. L. Jepson 1918-8-4 7808 Lassen Horse Lake 1554 Comment
  OBI5655  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley; 3 mi from Wendel on the road to Janesville 1219 Comment
  RSA719707  Ericameria nauseosa var. oreophila Michael A. Vincent, K. Levings 2006-7-29 12921 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  CAS-BOT-BC294180  Ericameria nauseosa var. speciosa G. Schoolcraft 1987-9-9 1775 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC294187  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50217 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  UC761818  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-27 4628 Lassen Susanville Comment
  CAS-BOT-BC293205  Ericameria suffruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 5068 Lassen Summit ridge of Diamond Mt. 2346 Comment
  UCR244068  Erigeron aphanactis var. aphanactis Jim Andre, G. L. Clifton 1993-6-9 19694 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
  UCD131273  Erigeron bloomeri Beecher Crampton 1960-6-18 5723 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  SEINET10617398  Erigeron bloomeri Billy Joe Cox 1971-6-2 Cox 2994 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon Pine, Jeffrey Pine along high ridge & in sandy wash. 1402 Comment
  CHSC117134  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2015-6-5 11777 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 13.0 road-km south of the junction a the west end of Tuledad Canyon; 6.8 road-km north of Stage Road (which is in the eastern corner of Madeline Plains); west side of a northeasern branch of Red Rock Creek. 1695 Comment
  CHSC117135  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2015-6-5 11759 Lassen Great Basin, Modoc lateau. 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
  CHSC99139  Erigeron bloomeri var. bloomeri Lowell Ahart; John Dittes 2008-6-19 14894 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC506989  Erigeron bloomeri var. bloomeri George A. Fischer and Irwin H. Johnson 1933-7-12 F 217 Lassen Lassen National Forest 1722 Comment
  UC773917  Erigeron bloomeri var. bloomeri L. R. Short and J. Warren 1936-6-23 S- 451 Lassen Burgess Springs Experiment Range Lassen National Forest, Burgess Springs Experiment Range 1741 Comment
  CHSC5207  Erigeron breweri 1944-6-30 Lassen Eagle Lake. Grasshopper Valley. 1584 Comment
  CHSC23483  Erigeron cervinus Wayne O. Baum 1971-7-12 71 -58 Lassen Slope of Gallatin Peak. 2042 Comment
  UC584273  Erigeron compositus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2286 Lassen s of Janesville (summit Thompson Peak); Thompson Peak 2346 Comment
  CAS-BOT-BC295979  Erigeron divergens Clare B. Hardham 1969-8-28 17421 Lassen West of Janesville, Sierra Nevada Comment
  CAS-BOT-BC296847  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-16 8340 Lassen Janesville Comment
  JEPS88241  Erigeron divergens Vernon H. Oswald and Lowell Ahart 1996-6-17 7808 Lassen gravel bar on edge of river e Devils Corral Trailhead (Bizz Johnson Trail) (w of 6.0 milepost, trailhead located off of Hwy 36, ca. 7 mi w of Susanville); Modoc Plateau, Susan River 1402 Comment
  UC1583973  Erigeron divergens G. Schoolcraft 1990-7-11 2107 Lassen on e slopes Tule Mtn. 1767 Comment
  CHSC65088  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1995-7-24 7129 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi ESE of Silver Lake on Forest Route 10 just S of its jct. with Forest Road 30N21. At roadside. 1935 Comment
  JEPS100338  Erigeron eatonii var. plantagineus Dean W. Taylor 2001-7-19 17844 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  UC87591  Erigeron eatonii var. plantagineus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC67164  Erigeron eatonii var. sonnei James D. Jokerst 1991-5-29 3301 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  POM36253  Erigeron filifolius Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC102023  Erigeron filifolius unknown 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC295184  Erigeron inornatus John Thomas Howell; Gordon H. True 1973-8-1 50157 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC25547  Erigeron inornatus var. inornatus Robert A. Schlising 1974-7-19 3153 Lassen SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station. Comment
  UC485173  Erigeron inornatus var. inornatus T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CAS-BOT-BC295958  Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  POM32998  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CDA34230  Erigeron pumilus subsp. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  CHSC99137  Erigeron pumilus subsp. intermedius Lowell Ahart; John Dittes 2008-6-19 14867 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS114759  Erigeron pumilus subsp. intermedius Lowell Ahart, John Dittes 2008-6-19 14867 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  POM261457  Erigeron pumilus subsp. intermedius Alice Eastwood, John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC89730  Erigeron pumilus var. intermedius L. P. Janeway 2004-6-26 8163 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC76016  Erigeron pumilus var. intermedius Milo S. Baker 1894-7-1 Lassen Dixey Valley Comment
  CAS-BOT-BC241568  Eriogonum baileyi var. baileyi Margaret Williams; Steven Williams 1974-7-26 74 -L-25 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  NY243326  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville. Comment
  SEINET530701  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  CAS-BOT-BC241837  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N. LItchfield, 26.6 mi S Ravendale 1310 Comment
  JEPS25524  Eriogonum collinum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7136 Lassen sandy playa 1/4 mi beside US 395 road to Smoke Creek 1341 Comment
  RSA238630  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along Hwy 395, 4.5 miles south of Ravendale Comment
  RSA338584  Eriogonum collinum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9485 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  NY570382  Eriogonum douglasii S. L. Welsh 2001-6-14 28154 Lassen East of Highway 395, road to Rams Horn Spring campground 1539.2 Comment
  UC1305802  Eriogonum maculatum Noel H. Holmgren, James L. Reveal 1964-8-22 1724 Lassen 18 mi s along U.S. 395 Ravendale (35 mi ne of Susanville) Comment
  UC85967  Eriogonum maculatum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  POM203841  Eriogonum marifolium J. T. Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  RSA780322  Eriogonum marifolium Elizabeth A. Kempton 2007-8-15 509 Lassen Lassen National Forest, Lassen Peak ca. 0.25 mile along trail from trailhead/parking lot. 2678 Comment
  POM105455  Eriogonum microtheca var. ambiguum Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  NY430485  Eriogonum microthecum var. ambiguum G. Schoolcraft 1999-7-28 2871 Lassen Ridge on east end of Skedaddle Mountains 2133.6 Comment
  CAS-BOT-BC268689  Eriogonum microthecum var. laxiflorum Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  NY803457  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-21 2945 Lassen Slopes below McKessick Peak ca. 10 miles southeast of Milford, CA-nwse 1504 Comment
  UC762680  Eriogonum nidularium R. F. Hoover 1940-9-29 4643 Lassen pass between Mt. Shaffer and Warren Peak Comment
  CAS-BOT-BC266368  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49514 Lassen West of Janesville, Elysian Valley, Sierra Nevada 1325 Comment
  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
  SEINET11261507  Eriogonum nudum var. pubiflorum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3925 Lassen 5.5 rd miles west of jct with Hwy 395 on Dawn Dr then rd to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1899 Comment
  UC761785  Eriogonum nudum var. pubiflorum R. F. Hoover 1940-9-28 4629 Lassen Susanville 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
  NY281931  Eriogonum ochrocephalum var. ochrocephalum N. H. Holmgren 1970-6-25 4378 Lassen North end of Peterson Mountain, near US 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). 1524.0 Comment
  CHSC114416  Eriogonum ovalifolium var. depressum Don Lepley 2012-7-26 Lassen Windy Hollow, west of Highway 44 about three miles southeast of Bogard Rest Area. (plants also in Section 14 and probably Sec. 15 of T31N R08E) 1722 Comment
  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
  UC1032333  Eriogonum ovalifolium var. ovalifolium A. Simontacchi 1940-6-30 932 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  HSC26580  Eriogonum ovalifolium var. purpureum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19303 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  OBI76940  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen Natl forest. Windy Hollow. Pine Crk Valley quad. T31N R8E sec 15 NE of SE 1716 Comment
  UC1735877  Eriogonum prociduum Dean W. Taylor 1992-5-7 12543 Lassen Ash Valley, ca. 1.5 miles SW of Ash Valley cemetary Comment
  UC6570  Eriogonum prociduum Mrs. R. M. Austin June, 1894 Lassen Willow Creek Valley Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  CAS-BOT-BC272626  Eriogonum spergulinum var. reddingianum John Thomas Howell 1934-7-6 12446 Lassen Harvey Valley 2438 Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  UC303059  Eriogonum spergulinum var. reddingianum Pearl Safford Lassen Susanville [uncertain locality] Comment
  SBBG65541  Eriogonum sphaerocephalum S. W. Hutchinson -Jun-1925 856 Lassen Eagle Lake 1584 Comment
  CHSC60914  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5674 Lassen Halls Flat rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On an open sagebrush flat on the E side of the road. 1694 Comment
  NY283113  Eriogonum sphaerocephalum var. halimioides H. D. D. Ripley 1943-6-13 5710 Lassen South of Johnstonville 1325.9 Comment
  UC1142996  Eriogonum sphaerocephalum var. halimioides August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest, Black Mtn. Headquarters 1706 Comment
  SEINET11261405  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 miles south of Adin.; 0 Comment
  CAS-BOT-BC262738  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Janesville on Highway 395 Comment
  CHSC64885  Eriogonum sphaerocephalum var. sphaerocephalum Vernon H. Oswald; Lowell Ahart 1995-6-19 6875 Lassen Between Litchfield and Revendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  CHSC93663  Eriogonum strictum var. anserinum Lowell Ahart; John Dittes 2005-6-2 11984 Lassen North side of the poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.8 miles (air) northwest of Hallelujah Junction. 1430 Comment
  NY762354  Eriogonum strictum var. anserinum H. D. D. Ripley 1944-5-30 5965 Lassen Secret Valley 1554.5 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
  UC412821  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CAS-BOT-BC267898  Eriogonum umbellatum John Thomas Howell 1934-7-6 12436 Lassen Harvey Valley Comment
  CAS-BOT-BC267891  Eriogonum umbellatum A. A. Heller 1938-6-23 15190 Lassen In the first valley east of Westwood Comment
  CHSC59788  Eriogonum umbellatum var. modocense Mary Meyer 1980-5-7 Lassen Scattered beneath sagebrush on Pete's Mesa. 1447 Comment
  CHSC86946  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7189 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
  CAS-BOT-BC265094  Eriogonum umbellatum var. nevadense Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16361 Lassen Near NE end of Eagle Lake Comment
  CHSC111254  Eriogonum umbellatum var. nevadense L. P. Janeway; B. Castro 2012-7-3 10937 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  JEPS97420  Eriogonum umbellatum var. nevadense Vernon H. Oswald and L. Ahart 1995-6-19 6888 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Loosely cespitose perennial 1350 Comment
  NY399396  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Between Secret Valley and Ravendale. Upper Sonoran Life Zone 1524.0 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
  RSA715993  Eriogonum umbellatum var. nevadense L. Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  UC1143015  Eriogonum umbellatum var. nevadense August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  UC1483832  Eriogonum umbellatum var. nevadense G. Schoolcraft 1979-7-5 126 Lassen 5.2 mi. from Horne Ranch Road (intersection up Observation Lookout Road) 2286 Comment
  UC585250  Eriogonum umbellatum var. nevadense E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1756 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  SEINET10479566  Eriogonum umbellatum var. nevadense Taylor 1982-8-27 Taylor 5056 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  JEPS117588  Eriogonum umbellatum var. polyanthum Lowell Ahart, John Dittes 2010-7-31 16988 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  SEINET530706  Eriogonum umbellatum var. polyanthum Paul Opler 2008-7-7 Lassen Crater Lake Rd., 32N08. 1725 Comment
  CAS-BOT-BC262364  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake 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
  HSC63561  Eriogonum vimineum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS56156  Eriogonum vimineum W. L. Jepson 1918-8-5 7816 Lassen Madelin Plains 1615 Comment
  RSA780043  Eriogonum vimineum Elizabeth A. Kempton 2007-8-15 511 Lassen Janesville, intersection of 395 and Sunnyside road 973 Comment
  UC1032093  Eriogonum vimineum E. Sawyer 1935-6-27 240 Lassen 3.5 mi ne Beckwith Pass; Sierraville Quadrangle Comment
  UC1258486  Eriogonum vimineum G. Schoolcraft 1979-6-19 78 B Lassen Painter's Flat 1719 Comment
  CAS-BOT-BC262358  Eriogonum vimineum M. S. Jussel 1931-9-6 s.n. Lassen On the road to Mt Lassen, five miles from Westwood 1828 Comment
  CAS-BOT-BC300947  Eriophyllum lanatum B. J. Hammerly 1941-6-20 43 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  CAS-BOT-BC308137  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  CHSC64754  Eriophyllum lanatum var. achilleoides Vernon H. Oswald 1995-5-31 6800 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CHSC92740  Eriophyllum lanatum var. achilleoides L. P. Janeway 2005-7-3 8453 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  UC604680  Eriophyllum lanatum var. achilleoides Farris Farris 1935-5-30 Lassen four mi se Susanville 1341 Comment
  OBI75879  Eriophyllum lanatum var. croceum Anthony Baniaga 2011-6-29 402 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW 1500 Comment
  UCR18727  Eriophyllum lanatum var. grandiflorum Frank C. Vasek 1975-7-11 750711- 06 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC301529  Eriophyllum lanatum var. integrifolium H. D. Ripley; R. C. Barneby 1943-6-13 5717 Lassen South of Johnstonville 1325 Comment
  CHSC112978  Eryngium alismifolium Lowell Ahart; John Dittes 2013-7-22 18879 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1087822  Eryngium alismifolium Ornduff 1958-7-22 5012 Lassen 4.5 mi S of Ravendale (next to Highway 395) Comment
  UC1487305  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  CAS-BOT-BC54588  Erysimum capitatum Al Simontacchi 1940-6-15 868 Lassen Lassen Forest. 0.6 miles west southwest of Black Mountains. 2133 Comment
  CAS-BOT-BC55194  Erysimum repandum Gary Schoolcraft 1982-5-20 668 Lassen Along Shaffer Mountain Road near Highway 395. 1386 Comment
  CHSC12460  Erythranthe guttata Robert W. Severin 1969-6-26 32 Lassen Murrer's Meadow, west side in moist grassy soil next to irrigation ditch; 2 mi ese E.L.B.S. Comment
  SEINET13768666 Image available Erythranthe guttata Francis W. Pennell 1940-1 25777 Lassen Route 36, 6 miles east of Westwood. 1585 Comment
  CHSC64897  Erythranthe latidens Vernon H. Oswald; Lowell Ahart 1995-6-19 6887 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Modoc Plateau. 1350 Comment
  CAS-BOT-BC153609  Erythranthe moniliformis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49410 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC153610  Erythranthe moniliformis Louella Bass 1973-6-17 124 Lassen Elysian Valley Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  CHSC43496  Erythranthe primuloides Lowell Ahart 1974-7-9 521 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  RSA234813  Erythranthe pulsiferae Francis W. Pennell 1940-6-10 25781 Lassen Northeast of West wood. 1646 Comment
  SEINET10933162  Erythronium purpurascens Hall 1993-6-29 Hall 4294 Lassen Plants of Mount Lassen. Soupen Springs. 8000 feet. 2440 Comment
  CAS-BOT-BC403148  Eschscholzia californica John Thomas Howell 1974-7-8 50472 Lassen Susanville 1295 Comment
  UCR55538  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road (c. 2 mi south of U.S. Hwy 299 and 4 mi SW of Adin) 1280 Comment
  CDA3706  Euclidium syriacum E. E. Fix 1951-6-8 Lassen 0 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  RSA183413  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its jct with Bassett Road (ca 2 miles S of US Hwy 299 and 4 miles SW of Adin). 1280 Comment
  UCSC000449  Euphorbia dictyosperma M. S. Baker 02 Julyunknown year s.n. Lassen South side of Dixey Mts. Lassen Mts. Comment
  CAS-BOT-BC312106  Eurybia integrifolia Alice Eastwood 1912-8-22 1883 Lassen Morgans Springs, Lassen Butte Region Comment
  SD112378  Eurybia integrifolia Darley F. Howe 1964-8-2 3919 Lassen East Creek, Warner Mountains, Modoc National Forest. 2010 Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  CHSC71858  Euthamia occidentalis Vernon H. Oswald; Lowell Ahart 1998-9-8 9579 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  RSA712794  Festuca 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. NAD83. 1523 Comment
  CHSC118821  Festuca idahoensis L. P. Janeway; B. Castro 2015-6-5 11760 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; 104 air-km northwest of Mahogany Mtn. 1731 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
  POM203057  Festuca idahoensis J. T. Howell 1934-7-6 12430 Lassen Hall's Flat. Comment
  SBBG128880  Festuca idahoensis L. Ahart, J. Dittes 2008-6-19 14880 Lassen open hillside, ca. 100 yards E of Willow Crk, ca. 120 yards NE of Hwy 139, near Forest Rd 36N02, ca. 19.6 mi ESE of Bieber 1578 Comment
  JEPS95090  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1997-6-24 8650 Lassen s of Susanville just s of small ond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout Red Rock Lookout; crest of Diamond Mountain 2249 Comment
  CHSC61058  Fragaria virginiana Vernon H. Oswald; Lowell Ahart 1993-8-3 5756 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the margin of the swamp. 1932 Comment
  UC1523707  Fraxinus latifolia Gregg Riegel 1981-6-17 1128 Lassen in and along Beaver Creek Beaver Creek 1280 Comment
  HSC26684  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19220 Lassen 3 mi. N of Westwood Comment
  CHSC4902  Galium aparine Bill Wilson 1967-6-23 18 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville. 1584 Comment
  UC773941  Galium aparine L. R. Short and Wm. Gansberg 1936-6-2 S- 367 Lassen Burgess Spring Experimental Range Lassen National Forest 1850 Comment
  CHSC59565  Galium bifolium Mary Meyer 1980-7-20 518 Lassen On west side of Fredonyer Peak. 2377 Comment
  UC773944  Galium bifolium L. R. Short and W. Gansberg 1926-6-2 S- 368 Lassen Lassen National Forest 1850 Comment
  CHSC93556  Galium boreale subsp. septentrionale Lowell Ahart; John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  CHSC113000  Galium trifidum subsp. columbianum Lowell Ahart; John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS117572  Gayophytum diffusum subsp. diffusum Lowell Ahart, John Dittes 2010-7-31 17020 A Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SBBG61277  Gayophytum diffusum subsp. parviflorum S. W. Hutchinson -Jun-1925 735 Lassen Eagle Lake 1554 Comment
  UC1137737  Gayophytum diffusum subsp. parviflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 247 Lassen Lassen National Forest 1767 Comment
  UC506925  Gayophytum diffusum subsp. parviflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 247 Lassen Lassen National Forest 1767 Comment
  RSA768780  Gayophytum heterozygum L. Ahart, John Dittes 2010-7-31 17025 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
  UC1122615  Gayophytum humile A. Simontacchi 1940-6-6 821 A Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  POM38703  Gayophytum racemosum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  NY999656  Gayophytum ramosissimum J. T. Howell 1974-7-8 50463 Lassen Susanville 1295 Comment
  RSA74475  Gayophytum ramosissimum Milo S. Baker 1936-6-16 8364 Lassen About 30 miles north of Susanville Comment
  JEPS28803  Gentianella amarella subsp. acuta George W. Gillett 1957-9-4 1130 Lassen 0.25 mi below Widow Lake (near Butte Lake, on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  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
  UC725738  Gentianopsis simplex A. A. Heller 1942-9-7 16536 Lassen shore of Summit Lake, Lassen Volcanic Nat'l Park Lassen Volcanic Nat'l Park, Summit Lake Comment
  POM88686  Geranium pusillum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC71389  Geranium viscosissimum var. nervosum Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9261 Lassen Forest Route 38N04 between Hwy. 139 and Williams Reservoir 1.2 mi east of the road to Smith Flat, 2.0 mi northeast of Hwy. 139 at Willow Creek Campground. 1664 Comment
  RSA0029585  Geranium viscosissimum var. nervosum Bruce Bartholomew, B. Anderson 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC459350  Geum aleppicum Marcus E. A M Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC459363  Geum macrophyllum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49425 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  UC1037208  Geum macrophyllum var. perincisum Leo Whitney 1933-8-14 1568 Lassen 8 mi nw of Eagle Lake (Lassen National Forest, Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  CHSC68869  Geum triflorum Vernon Oswald; Lowell Ahart 1997-6-24 8649 Lassen South of Susanville at the pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS60511  Geum triflorum Brown and Wieslander 1922-7-23 22 Lassen Eagle Lake, Martin Springs Eagle Lake; , Martin Springs Comment
  RSA702135  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  SEINET14626750  Gilia brecciarum subsp. brecciarum D. L. Neal 1960-5-7 R- 34 Lassen Red Rock area, ca 10 miles S of Doyle. 1463 Comment
  JEPS107828  Gilia inconspicua Lowell Ahart, John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  RSA104235  Gilia malior Verne Grant, Alva Grant 1956-5-17 9798 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  RSA0068910  Gilia minima Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CAS-BOT-BC523868  Gilia modocensis Alice Eastwood; John Thomas Howell 1940-6-16 8355 Lassen Constantia Comment
  RSA95716  Gilia modocensis Verne Grant 1955-6-8 9666 Lassen c. 2 miles north of Doyle. 1311 Comment
Read comments
May 2 2012
  RSA516988  Gilia ophthalmoides Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  SD131882  Gilia salticola Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mountains on northeast side of Honey Lake, talus slopes at base of rimrock on south side of Hot Springs VABM 2286 Comment
  CHSC25915  Gilia sinuata K. R. Stern 1967-7-1 2437 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  POM74852  Gilia sinuata Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA469630  Gilia sinuata Christopher Davidson 1975-6-7 2756 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC66283  Glyceria borealis Vernon H. Oswald; Lowell Ahart 1996-6-24 7872 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  HSC95215  Glyceria borealis Gordon Leppig 1998-7-13 974 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  JEPS28295  Glyceria borealis George W. Gillett 1957-7-26 922 Lassen Lassen Volcanic Nat'l Park, Butte Lake 1844 Comment
  CAS-BOT-BC302596  Gnaphalium palustre Clare B. Hardham 1971-8-22 18421 Lassen Diamond Mountain, north slope 2225 Comment
  CHSC31131  Grayia spinosa J. S. White 1980-4-14 118 Lassen On 2% s slope, 1 mi ne of Wendel. 1295 Comment
  JEPS29750  Grayia spinosa Rimo Bacigalupi and L. R. Heckard 1962-5-28 8504 Lassen n. of Honey Lake (2 mi. e. of Wendel junction on rd. from U.S. 395 past Flanagan to Pyramid Lake -Nevada) 1219 Comment
  UCD55266  Grayia spinosa Ellen Dean 2006-5-15 3064 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  JEPS87405  Gymnosteris parvula Vernon H. Oswald and Lowell Ahart 1993-6-3 5485 Lassen between Susanville and Poison Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi n of its jct w Lassen 21 (32N02) to Eagle Lake, on w edge of Pine Creek Valley); Pine Creek Valley, Champs Flat Road 1731 Comment
  CAS-BOT-BC388468  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  UC1137694  Hackelia californica L. R. Short, J. Warren 1936-6-26 S 458 Lassen Burgess Spring Experiment Range; Lassen National Forest 1853 Comment
  CDA3153  Halogeton glomeratus E. E. Fix Jun 1948 Lassen Western Railroad right-of-way. 0 Comment
  CHSC25102  Halogeton glomeratus Paul Lyman 1970-5-12 19 Lassen Skeedaddle Mountain, Smoke Creek Desert, Litchfield. Found 200 yards east of Skedaddle Ranch house along Smoke Creek Spring. This area is high desert grassland and about 1/2 mi. west of Nevada Line. Comment
  CDA38004  Halogeton glomeratus CDFA Staff 1991-1 s.n. Lassen Wendel. 0 Comment
  UCD98896  Halogeton glomeratus Collector Unknown 1950-9-1 s.n. Lassen vicinity of Herlong. Comment
  CAS-BOT-BC314766  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  JEPS124645 Image available Helianthus annuus Michael D. Fleschner 1965-7-12 1965 -110 Lassen 2 miles south of MIlford, on Hwy 395. Comment
  JEPS94088  Helianthus bolanderi Vernon H. Oswald and Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at R.R. overpass on e. side of Nubieber 1255 Comment
  CAS-BOT-BC305661  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  UCD73908  Heliotropium curassavicum var. oculatum Rebecca Epanchin-Niell 2001-6-14 44 Lassen Jay Dow, Sr. Wetlands (owned by University of Nevada, Reno) on the south side of Honey Lake. Comment
  CHSC68846  Hemizonella minima Vernon Oswald; Lowell Ahart 1997-6-24 8592 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
  CHSC30620  Hesperochiron californicus Eric Miller 1975-7-9 14 Lassen E. of Dirt road adjacent to Coleman Lake, 30 ft. S. of overflow. 1950 Comment
  NY1082476  Hesperochiron californicus A. Tiehm 1986-5-12 10348 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  UC773897  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley Lassen Forest, Harvey Valley 1706 Comment
  CHSC65038  Hesperolinon micranthum Vernon H. Oswald; Lowell Ahart 1995-7-5 6957 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  JEPS127352  Hesperolinon micranthum Lowell Ahart, John Dittes 2016-7-13 21123 Lassen 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC1924195  Hesperolinon micranthum Debra Valov 2005-8-20 2005235 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC60155  Hesperostipa comata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  UC1949318  Heterotheca villosa var. minor Barbara Ertter 1987-7-24 7302 Lassen ca 3/4 mi ENE of Bechwourth Pass at end of old crumbling paved road Comment
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1136853  Hieracium albiflorum L. R. Short and Wm. Gansberg 1936-7-3 S 411 Lassen Burgess Spr. Exp. Range Lassen National Forest 1847 Comment
  OBI75888  Hieracium albiflorum Anthony Baniaga 2011-8-16 500 Lassen Lassen Natl Forest. Just N of intersection 32N10H with F.S. 10. Red Cinder quad T30N R8E sec 18 NW of NW 1905 Comment
  CAS-BOT-BC318711  Hieracium horridum Lemmon 1874-9-1 s.n. Lassen Shasta Comment
  JEPS97327  Hieracium scouleri Vernon H. Oswald 1995-8-21 7206 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
  SBBG8442  Hieracium scouleri H. and M. Dearing 1938-7-1 2247 C Lassen near Westwood Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  UC92036  Hieracium scouleri unknown 1892-6-28 Lassen Janesville Comment
  JEPS97329  Hippuris vulgaris Vernon H. Oswald 1995-8-21 7211 Lassen T38N R15E SE1/4 Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  CAS-BOT-BC280698  Holcus lanatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49501 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC150128  Holodiscus microphyllus var. glabrescens P. Monnet 1913-7-4 802 Lassen Hot Springs Peak Comment
  JEPS114655  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  POM352505  Hordeum arizonicum A. A. Beetle 1941-6-28 s.n. Lassen 6 mi south of Ravendale, Lower slopes of Observation Peak Comment
  RSA647541  Hordeum brachyantherum Marion P. Harthill 1972-6-17 829 Lassen Madeline 1677 Comment
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  CHSC41842  Hordeum brachyantherum subsp. brachyantherum P. V. Caldwell 1972-7-12 273 Lassen 300 meters from Eagle Lake on Papoose Creek. Comment
  UC1024652  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1933-8-2 2202 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UC53616  Hordeum brachyantherum subsp. brachyantherum J. Burtt Davy Jun 17 1897-Jun 24 1897 3366 Lassen Adobe Meadows Honey Lake Valley, Adobe Meadows Comment
  CAS-BOT-BC284712  Hordeum jubatum A. A. Beetle 1941-6-28 2808 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak Comment
  CAS-BOT-BC284715  Hordeum jubatum John Thomas Howell 1976-7-20 52034 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC7694  Hordeum jubatum Beverley J. Wise 1969-6-4 131 Lassen 10 mi. east of Susanville on Hwy 395, Janesville cut in Hwy. 1310 Comment
  UCD85875  Hordeum marinum subsp. gussoneanum P. B. Kennedy 1927-6-15 s.n. Lassen Fall River Valley. By Pit River. Comment
  CAS-BOT-BC284896  Hordeum murinum subsp. leporinum John Thomas Howell 1973-7-10 49801 Lassen Susanville 1295 Comment
  UC1924232  Hordeum murinum subsp. leporinum Debra Valov 2004-6-9 2004262 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC1542925  Horkelia fusca subsp. parviflora G. Schoolcraft 1987-6-23 1753 Lassen Ash Valley RNA 1554 Comment
  CHSC84869  Horkelia fusca subsp. tenella L. P. Janeway; B. Castro 2003-10-5 8007 Lassen High Cascade Range. Cone Lake and trailhead parking area (trail 1.3 km southwest into Caribou Wilderness Area). Around meadows and ponds. 2055 Comment
  JEPS87433  Horkelia fusca subsp. tenella Vernon H. Oswald and Lowell Ahart 1993-6-28 5577 Lassen 0.2 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley, e of Poison Lake); e of Poison Lake, e side of Grays Valley 1749 Comment
  UC1483792  Horkelia fusca subsp. tenella Teresa Prendusi 1980-7-1 Lassen Littel Antelope Valley, Bureau of Land Management 1676 Comment
  CAS-BOT-BC537967  Horkelia tridentata var. flavescens C. L. Hitchcock 1940-5-26 6597 Lassen Ca. 12 miles north of Fall River Mills. (Shasta Co.) on Fall River 1371 Comment
  CHSC30619  Hydrophyllum capitatum var. alpinum Eric Miller 1975-6-24 10 Lassen N. E. corner of Deans Meadow, 15 ft. off dirt road. 1956 Comment
  CHSC61156  Hydrophyllum capitatum var. alpinum Vernon H. Oswald; Lowell Ahart 1993-5-12 5378 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood), at a large, meadowy flat. 1729 Comment
  SJSU8059  Hypericum anagalloides J. W. Tilden 1960-6-27 1523 Lassen 5 mi E of Westwood via Moonlight Rd 1524 Comment
  UC124652  Hypericum formosum var. scouleri W. E. Bryant Lassen Comment
  CAS-BOT-BC88637  Idahoa scapigera Louella Bass 1974-4-16 EV 150 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC52812  Iliamna bakeri G. Schoolcraft 1981-7-29 552 Lassen On rocky slopes of McDonald Peak near top. 2377 Comment
  CHSC75730  Iliamna bakeri Vernon H. Oswald; Beth Corbin, Michael Dolan 1999-7-10 9832 Lassen Blue Lake Rd. ca. 10 mi east of Madeline on the Meeks prescribed burn (1990). 1859 Comment
  NY716915  Iliamna bakeri R. R. Halse 2004-7-8 6615 Lassen Along State Highway 139, ca. 6 miles north of Eagle Lake 1710 Comment
  SDSU7494  Iliamna bakeri D. F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc National Forest 1829 Comment
  CHSC12453  Ipomopsis aggregata subsp. formosissima Robert W. Severin 1969-7-10 46 Lassen Found on Galatin Peak, in burn area; 2 mi s of E.L.B.S. 1828 Comment
  CHSC6203  Ipomopsis aggregata subsp. formosissima P. Balch 1955-7-17 Lassen Eagle Lake. Mouth of Papoose Creek, near Gallatin Beach. 1561 Comment
  CHSC59781  Ipomopsis congesta Mary Meyer 1980-7-15 Lassen Found in ash barrens. 1546 Comment
  JEPS118488  Iris hartwegii subsp. hartwegii Lowell Ahart, John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley 1264 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
  CAS-BOT-BC61857  Isoetes nuttallii Alice Eastwood; John Thomas Howell 1940-6-11 7984 Lassen Big Valley Mts. Comment
  JEPS88085  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1996-6-24 7848 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of the cabins); Modoc Plateau 1633 Comment
  RSA0025414  Isoetes nuttallii Forrest Freund 2013-5-23 192 Lassen HWY 44. Depression on the north side of the road. Plants in open patches near center of the pool. 1653 Comment
  CHSC117178  Isoetes orcuttii Lowell Ahart; John Dittes 2016-6-7 21016 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  JEPS127206  Isoetes orcuttii Lowell Ahart, John Dittes 2016-6-7 21016 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. Comment
  CHSC27587  Iva axillaris subsp. robustior Robert A. Schlising 1978-7-15 3318 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  NY833699  Ivesia baileyi G. Schoolcraft s.n. Lassen In Wendel Canyon 1585 Comment
  RSA614443  Ivesia paniculata M. L. Carlson 1996-6-11 s.n. Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET6792604  Ivesia paniculata M. J. Williams 1970-7-4 595 Lassen Near Ash Creek. 1280 Comment
  CHSC30617  Juncus balticus M. A. Dubin 1975-7-20 7 Lassen Marsh 0.8 miles NE of Eagle Lake Field Station. 1569 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
  UCD141331  Juncus balticus subsp. ater John Thomas Howell 1959-9-23 34881 A Lassen North end of Juniper Lake. 2057 Comment
  UCD141340  Juncus balticus subsp. ater Herbert L. Mason; Verne Grant 1947-7-9 13297 Lassen 5 miles east of Bieber. Comment
  SEINET11787326  Juncus bufonius A. Tiehm, Nachlinger, J.; Schoolcraft, G. 1984-1 8824 Lassen Rodeo Flat, 2.7 road mi W of state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  JEPS28715  Juncus bufonius var. occidentalis George W. Gillett 1957-7-29 953 Lassen near Snag Lake east inlet; Lassen Volcanic National Park, Snag Lake 1850 Comment
  JEPS96127  Juncus bufonius var. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-24 7838 Lassen ca 0.5 mi s Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1136937  Juncus confusus L. R. Short and J. Warren 1936-6-10 S- 418 Lassen Burgess Spr. Exp. Range Lassen Forest 1856 Comment
  UCR88026  Juncus confusus J. T. Howell, G. H. True 1973-8-1 50171 Lassen Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  RSA129410  Juncus dubius H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow. 1524 Comment
  JEPS126565  Juncus hemiendytus var. hemiendytus Lowell Ahart, John Dittes 2016-6-7 20991 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC29855  Juncus nevadensis Kyle Brown 1978-7-10 95 Lassen In meadow at the base of the dam in Murrers Upper Meadow. 1548 Comment
  CHSC58859  Juncus nevadensis Vernon H. Oswald; Lowell Ahart 1992-7-16 5124 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  CHSC67714  Juncus nevadensis James D. Jokerst 1983-7-25 1899 Lassen Madeline Plains W of Termo. Comment
  UC1142942  Juncus nevadensis A. L. Hormay 1941-6-18 3 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC1609497  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  UCD141628  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen Skedaddle Mountains. 1828 Comment
  UCD108039  Juncus occidentalis Tim Kuhn 2006-7-26 76 Lassen Eagle Lake Ranger District. Comment
  UC1133737  Juncus tiehmii A. Simontacchi 1940-6-5 815 Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  RSA0035254  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, Cascade Range Highlands. 1730 Comment
  RSA712895  Juncus trilocularis 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
  JEPS126524  Juncus uncialis Lowell Ahart, John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CAS-BOT-BC81149  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen on Gold Run Creek, 5 miles from Susanville 1310 Comment
  HSC1267  Juniperus occidentalis L. H. Myers 1963-4-10 40 Lassen 1.0 mi. S of Janesville 1280 Comment
  JEPS126564  Juniperus occidentalis Lowell Ahart, John Dittes 2016-6-7 20974 Lassen About 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  RSA78920  Juniperus occidentalis E. K. Balls, P. C. Everett 1952-10-10 18141 Lassen 8 mi SE of ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UC1001953  Juniperus occidentalis Mrs. B. A. Berry 1954-9-29 7 Lassen n Westwood Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
Read comments
Apr 29 2013
  UCR164508  Juniperus occidentalis Maile Neel 2000-4-29 G- 2 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10899767  Juniperus occidentalis Jeffrey Huber 1971-6-2 Huber 130 Lassen Approx. 30 mi N of Susanville, on Calif. Hwy 139, in basalt; Pinus-Artemesia-Juniper assoc. 1646 Comment
  SEINET5334961  Juniperus occidentalis J. Vetter 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  UCSB233  Juniperus occidentalis Haller, John 1959-08 Lassen 2 miles north of Susanville on road to Eagle Lake and Adin 1371 Comment
  UCR1818  Juniperus occidentalis subsp. australis Frank C. Vasek 1962-9-3 620903- 04 Lassen Calif. Hwy 36, 3.6 mi west of the Ranger Station, west of Susanville 1524 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
  SEINET11056886  Juniperus occidentalis var. occidentalis D. Charlet 1993-7-13 1582 Lassen Fort Sage Mountains, along road W of OHV trailhead. 1450 Comment
  SD139404  Juniperus osteosperma F. C. Vasek 1964-9-12 day 6 Lassen U. S. 395, 5.2 miles north of its junction with State Highway 70 (U. S.40) 1480 Comment
  CHSC57200  Kelloggia galioides Mary Meyer 1980-7-21 Lassen Beneath white fir stand. 2103 Comment
  CHSC60920  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5657 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  UC1374967  Kelloggia galioides Noel H. Holmgren, John J. Fay, and Barton L. Bethers 1970-6-24 4374 Lassen 2 mi w Westwood (at edge of airstrip) 1554 Comment
  UC773971  Koeleria macrantha L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experiment Range 1798 Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  CAS-BOT-BC271329  Koeleria pyramidata Clarence Quick 1963-7-12 63 -32 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CHSC59133  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1992-8-25 5195 Lassen Lassen Volcanic National Park. Slope at the SE corner of Snag Lake. 1853 Comment
  JEPS88425  Kyhosia bolanderi Vernon H. Oswald and Lowell Ahart 1996-8-1 8116 Lassen ca. 0.1 mi downstream Indian Ole Dam on Mountain Meadows Reservoir (sw of Westwood); Hamilton Branch of the North Fork of the Feather River 1524 Comment
  UCR67465  Lactuca saligna George K. Helmkamp 1990-9-23 G- 13 Lassen north of Ravendale 1677 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
  UCD133500  Lactuca tatarica subsp. pulchella W. L. Jepson 1918-8-2 s.n. Lassen lower bench of Long Valley Creek. Beckwith Pass. 1463 Comment
  CAS-BOT-BC341485  Lagophylla ramosissima John Thomas Howell 1974-7-10 50527 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC341482  Lagophylla ramosissima David D. Keck; J. Clausen 1935-6-25 3760 Lassen Susanville, on yellow-pine covered hills just W. of town 1300 Comment
  CHSC66374  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1996-6-17 7782 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Along the trail at the 7 mile post on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  CHSC99304  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
  JEPS89759  Lasthenia glaberrima Dean Wm. Taylor with Robert A. Price 1988-6-4 9771 Lassen 6 mi e of MacArthur (along Highway 299 at crossing of Frazer Creek, Fall River Valley, Pit River Watershed); Fall River Valley, Pit River Watershed 1036 Comment
  UC1573178  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 (.5 mi s of the Modoc County Line); Pit River Watershed, Big Valley 1249 Comment
  RSA0042601  Lasthenia glaberrima Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen About 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CAS-BOT-BC321496  Layia glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, S of Susanville. Comment
  CHSC59691  Layia glandulosa Mary Meyer 1980-4-24 Lassen Shaffer Mt. 1432 Comment
  CHSC71072  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1998-5-22 9109 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  UC468843  Layia glandulosa Franklin P. Nutting Lassen Dixey Valley Comment
  SEINET10473885  Layia glandulosa Mary Susan Taylor 1982-5-29 Taylor 4571 Lassen T22N R17E se/ne sec 11. Beckwourth Pass quad. Ca. 500 yds ne of the jct of Hwys 70 & 395 at Hallelula Jct, ca. 23 mi n of Reno. 5000 ft. 1524 Comment
  SEINET10879114  Layia glandulosa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17795 Lassen 6 mi. N of Hallelujah Jact. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  UC1101282  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-8-20 1483 Lassen 1 mi n of Doyle (Honey Lake Valley, Long Creek); Honey Lake Valley, Long Creek Comment
  UC1101286  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-7-21 1051 Lassen 1 mi e of Madeline Comment
  CAS-BOT-BC88819  Lepidium campestre John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49226 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC88820  Lepidium campestre Louella Bass 1973-6-15 110 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC112998  Lepidium campestre Lowell Ahart; John Dittes 2013-7-23 18886 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC99531  Lepidium chalepense Lowell Ahart; John Dittes 2008-6-20 14978 -B Lassen Where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC89718  Lepidium latifolium John Thomas Howell 1975-7-23 51413 Lassen Sierra Nevada. On Highway 395 between Johnstonville and Janesville. 1280 Comment
  CDA3797  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen Madelaine Plains , on east side of road, Highway 395 to Litchfield, 4.7 miles south of Ravendale. 0 Comment
  CHSC36487  Lepidium perfoliatum Margaret E. Halloran 1982-6-2 1 Lassen Ca. 2 mi e jct of Hwy 139 and Ravendale Rd. Comment
  CHSC68896  Leptosiphon ciliatus Vernon Oswald; Lowell Ahart 1997-6-24 8605 .1 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  SEINET7967451 Image available Leptosiphon ciliatus John Thomas Howell 1974-7-10 50560 Lassen Elysian Valley 1326 Comment
  CHSC4794  Leptosiphon harknessii R. Carter 1967-6-29 571 Lassen Roadside, n side of rd. On rd to Murrer's Medow. Eagle Lake. 1584 Comment
  CHSC6205  Leptosiphon harknessii R. Gein 1946-6-25 Lassen Webbs Camp, Eagle Lake. 1554 Comment
  SEINET3364450 Image available Leptosiphon harknessii Marcus E. Jones 1897-7-2 Lassen Susanville Comment
  UCD159576  Leucanthemum vulgare D. S. Park 2011-6-27 313 Lassen Near Goodrich Mt. Between Rt. 36 and small stream. 1556 Comment
  CAS-BOT-BC334598  Leucanthemum vulgare G. Schoolcraft 1987-6-17 1746 Lassen Along Hwy 36 about 3 miles east of Westwood 1554 Comment
  CHSC101047  Leucocrinum montanum John Dittes 2008-5-22 1524 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; alluvial terrace and toe-slope on northeast side of Willow Creek. 483 Comment
  JEPS87460  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  CHSC68756  Lewisia nevadensis Vernon H. Oswald; Lowell Ahart 1997-5-27 8523 Lassen Meadow along Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi north-east of Hwy. 139. 1731 Comment
  CHSC71315  Lewisia nevadensis Vernon H. Oswald 1998-6-22 9231 Lassen Champs Flat Rd. (A-21) 1.8 mi north of Hwy. 44, ca. 18 air mi north of Westwood. 1749 Comment
  CAS-BOT-BC283771  Leymus cinereus John Thomas Howell 1974-7-10 50554 Lassen Elysian Valley 1325 Comment
  JEPS68547  Leymus cinereus W. L. Jepson 1918-8-2 7795 a Lassen Raker Ranch Honey Lake Valley 1219 Comment
  JEPS87470  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  UC1609507  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  UCD32674  Leymus cinereus Beecher Crampton 1954-7-6 2078 Lassen Lassen County, 3 miles south of Ravendale. Comment
  CAS-BOT-BC274466  Leymus triticoides John Thomas Howell 1974-7-8 50467 Lassen Susanville 1295 Comment
  UC1542930  Leymus triticoides G. Schoolcraft 1987-6-3 1719 Lassen Painter Flat; w side 1706 Comment
  UCD87762  Leymus triticoides L. G. Stiles 1927-6-2 s.n. Lassen Milford. Comment
  HSC21517  Ligusticum grayi M. T. Milligan 1964-7-16 141 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  RSA0035910  Lilaea scilloides Lowell A. Ahart, John Dittes 2008-6-20 14943 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  UC485771  Lilium parvum H. E. Parks Jun 1928 222 Lassen Drakesbad; Lassen National Park Comment
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Dec 13 2006
  JEPS22194  Limosella acaulis Rimo Bacigalupi with S. Galen Smith 1957-7-28 5997 Lassen along U.S. Highway 395 on Madeline Plains 3.1 mi s Madeline; Madeline Plains 1615 Comment
  CAS-BOT-BC246146  Limosella aquatica Malcom A. Nobs; S. Galen Smith 1949-7-20 1046 Lassen Bieber, along Highway 299 Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  JEPS107873  Linanthus ciliatus Lowell Ahart, John Dittes 2005-6-2 11936 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  UC1184062  Linanthus ciliatus Jean Langenheim 1957-6-26 4400 Lassen nw Said Valley, from areas adjacent ot 1937 chaparral quadrat, e part of Lassen County Said Valley Comment
  CHSC89741  Linanthus harknessii L. P. Janeway 2004-6-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  OBI75885  Linanthus pungens subsp. pulchriflorus Anthony Baniaga 2011-7-1 415 Lassen BLM. Fort Sage MTs OHV trailhead area, E of Doyle. Quad 1442 Comment
  CDA6345  Linaria genistifolia subsp. dalmatica T. C. Fuller 1968-6-12 17236 Lassen Corut Street & Miller Road, southwest Susanville. 0 Comment
  UCD35730  Linum lewisii var. lewisii Beecher Crampton 1960-6-18 5714 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC435429  Lithophragma glabrum Louella Bass 1974-4-16 EV 149 Lassen Elysian Valley; Sierra Nevada 1325 Comment
  CHSC68765  Lithophragma glabrum Vernon Oswald 1997-5-27 8524 Lassen North of Susanville on Frest Route 38N04 0.4 mi south of Coyote Flat, 4.3 mi northeast of Hwy. 139. 1798 Comment
  JEPS94533  Lithophragma glabrum Vernon Oswald and Lowell Ahart 1997-6-24 8641 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
  SEINET6032556  Lithophragma glabrum D. E. Brix 1962-5-2 s.n. Lassen Red Rock Road 1433 Comment
  CAS-BOT-BC428415  Lithophragma tenellum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49165 Lassen Elysian Valley northwest of Janesville. 1325 Comment
  CHSC71099  Lithophragma tenellum Vernon H. Oswald; Lowell Ahart 1998-5-22 9127 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  JEPS47671  Lithophragma tenellum Milo S. Baker 1890-1 Lassen Milford Comment
  UC1127235  Lithophragma tenellum A. Simontacchi 1940-5-10 693 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  SEINET10456166  Lithospermum ruderale Paul Gallian, David B. Dunn 1971-6-2 Gallian 463 Lassen 6 mi. N of Hallelujah Jct. on US Hwy 395. 1402 Comment
  CAS-BOT-BC269059  Lolium perenne John Thomas Howell; Gordon H. True 1973-8-1 50187 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 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
  SEINET8588605  Lomatium austiniae A. Rosenblum, A. Ortega 2015-5-28 NV 030 -1063 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
  CHSC1962  Lomatium bicolor J. Wakeman 1963-5-11 Lassen Bieber. Comment
  CHSC117773  Lomatium bicolor var. leptocarpum L. P. Janewway; B. Castro 2015-6-5 11772 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  CHSC92830  Lomatium dissectum var. multifidum Lowell Ahart; John Dittes 2005-6-2 11930 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
  POM78249  Lomatium donnellii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  JEPS125805  Lomatium foeniculaceum subsp. macdougalii William Harnach 2010-6-8 1243 Lassen 2 miles west of the California Nevada state line, north side of Fort Sage Road, northeast of Doyle, CA. Comment
  RSA0049635  Lomatium foeniculaceum subsp. macdougalii Dean Wm. Taylor 2012-6-6 21225 Lassen Vicinity Hunsinger Flat (ca. 10 miles ESE of Adin), 88 feet due E of junction of Forest Road 38N33 with Forest Road 38N04 1600 Comment
  CHSC65245  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen In rocky areas along U.S. Hwy. 395, 9.5 mi. north of Madeline. 1490 Comment
  CHSC67146  Lomatium macrocarpum James D. Jokerst 1991-5-29 3308 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  CHSC106579  Lomatium nevadense C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC7744  Lomatium nevadense Beverley J. Wise 1969-4-13 116 Lassen 5.6 mi. east on Las. Co. Rd. 338 past the junction with Hwy 395. 1554 Comment
  RSA517344  Lomatium nevadense Barbara Ertter, Gary Schoolcraft 1987-6-16 s.n. Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 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
  UC1483796  Lomatium nevadense var. nevadense G. Schoolcraft 1979-4-18 10 Lassen n. Skedaddle Ranch 1554 Comment
  UC1520662  Lomatium nevadense var. nevadense Noel H. Holmgren and Patricia K. Holmgren 1980-7-4 9513 Lassen 18 km. (11 mi.) airline distance e. Ravendale (s. side Observation Peak); Observation Peak Comment
  SEINET5333498  Lomatium nevadense var. nevadense K. Chambers 2002-4-21 6347 Lassen Highway 395, 28 mi. S. of Ravendale, n. of Honey Lake. Comment
  UC773965  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  CHSC60807  Lomatium nudicaule Vernon H. Oswald; Lowell Ahart 1993-6-28 5617 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
  CHSC71066  Lomatium plummerae Vernon H. Oswald; Lowell Ahart 1998-5-22 9111 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  CAS-BOT-BC123126  Lomatium ravenii Lincoln Constance; Rimo Carlo Felice Bacigalupi 1959-6-14 3672 Lassen One mile S of Ravendale 1463 Comment
  CAS-BOT-BC217797  Lomatium ravenii Lincoln Constance; E. DiFulvio 1962-4-16 3747 Lassen 1 mile S of Ravendale 1615 Comment
  JEPS25531 Image available Lomatium ravenii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7145 Lassen 2 mi. s. Ravendale 1615 Comment
  RSA0049623  Lomatium ravenii Dean Wm. Taylor 2012-5-17 21208 Lassen Madeline Plains, at the western base of Juniper Ridge (ca. 5 miles E of Termo) 1615 Comment
  UC1199508 Image available Lomatium ravenii Lincoln Constance and Rimo Bacigalupi 1959-6-14 3672 Lassen 1 mi s Ravendale; ; Ravendale, Lassen Co. 1463 Comment
Read comments
Jun 6 2012
  UC1167726  Lomatium tracyi Peter H. Raven with Otto T. Solbrig 1958-6-16 13248 Lassen 4.5 mi. e. Westwood (on State Hwy. 36) Comment
  SEINET11131322  Lomatium triternatum var. triternatum M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 86201 Lassen Smoke Creek Rd., E of HWY 395 1433 Comment
  POM78250  Lomatium vaginatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1609455  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5608 Lassen 1.5 mi ne Aspen Well (n of Hwy 44 on Harvey Rd One (34N27), ne of Harvey Valley, ne of Poison Lake) 1761 Comment
  RSA406186  Lotus humistratus W. Hutchinson 1925-7-1 s.n. Lassen Lassen Comment
  CHSC24959  Lotus purshianus K. R. Stern 1974-6-26 5858 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
  JEPS107457  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2005-6-2 11970 -A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  NY716011  Lotus tenuis A. J. Cronquist 1959-6-17 8474 Lassen Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville 1311 Comment
  RSA715662  Lotus unifoliolatus L. Ahart 2005-6-2 11970 -A Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  POM253309  Lotus unifoliolatus A. A. Heller 1938-7-28 15300 Lassen Just east of Westwood. Comment
  JEPS127169  Ludwigia palustris Lowell Ahart, John Dittes 2016-7-15 21220 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS108147  Lupinus andersonii L. P. Janeway, B. Castro 2005-7-10 8482 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 & 28N02) and Road 28N01 1859 Comment
  JEPS64900  Lupinus angustiflorus Brown and Wieslander 1922-7-23 61 Lassen Martin Springs , Martin Springs (Eagle Lake) Comment
  JEPS28489  Lupinus arbustus George W. Gillett 1957-7-29 956 Lassen near the Butte Lake Trail (above Snag Lake); , near the Butte Lake Trail 1859 Comment
  SEINET10484655  Lupinus arbustus subsp. calcaratus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2577 Lassen 6 miles s of adin; along cal hwy 139 right-of-way; in basalt clay, grassy road Bank; artemisia, juniper assoc. 1372 Comment
  SEINET10484731  Lupinus arbustus subsp. silvicola Paul Gallian, David B. Dunn 1971-6-2 Gallian 498 Lassen Ca 22 miles s of adin on cal hwy 139; in basalt; assoc.; Juniper, artemisia 1646 Comment
  CAS-BOT-BC208736  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21497 Lassen 7 1/2 miles north of Bogard Staton, Bogard Ranger Station, Lassen Forest 1500 Comment
  CAS-BOT-BC208744  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Just outside of Johnstonville on U.S. Highway #395. 1280 Comment
  CAS-BOT-BC208766  Lupinus argenteus var. heteranthus Beeson 1927-7-11 21470 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  CHSC36284  Lupinus argenteus var. heteranthus M. S. Taylor 1982-6-12 4653 Lassen In Doyle, ca. 0.5 mi e of Hwy 395. Comment
  NY736922  Lupinus argenteus var. heteranthus N. H. Holmgren 1978-6-11 8925 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance 1800 Comment
  NY736931  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of Doyle, along Highway 395 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
  UC127527  Lupinus argenteus var. heteranthus J. Burtt Davy Jun 17-24, 1897 Lassen Honey Lake Valley Comment
  UC1924256  Lupinus argenteus var. heteranthus Debra Valov 2004-5-31 2004231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD106819  Lupinus argenteus var. heteranthus Grady L. Webster 1989-5-13 7712 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UCD106820  Lupinus argenteus var. heteranthus Leo Whitney 1934-7-17 s.n. Lassen Lassen N. F. Comment
  UCR270692  Lupinus argenteus var. heteranthus John F. Emmel 1999-6-5 1631 Lassen Honey Lake Basin, north end of Fort Sage Mountains, east base of Turtle Mountain 1280 Comment
  SEINET10484833  Lupinus aridus Billy Joe Cox 1971-6-11 Cox 3190 Lassen 6 mi w. Of susanville on calif. Hwy 36; in volcanic soil; association with Pinus ponderosa forest. 1615 Comment
  HSC28310  Lupinus brevicaulis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19280 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  SEINET5328130  Lupinus brevicaulis M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-14 86- 40 -1 Lassen Near Hwy 395, at Noble Emigrant Trail Sign, 7 rd miles N of Litchfield 1524 Comment
  UC1184055  Lupinus breweri Jean Langenheim 1957-6-26 4401 Lassen nw Said Valley (northeastern part of Lassen County); nw Said Valley Comment
  CAS-BOT-BC196641  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  HSC81486  Lupinus caudatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6015 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 Comment
  SEINET12161686  Lupinus caudatus N. E. Heiken 1978-1 57 Lassen SE of Eagle L. T31N R11E Sec22 1554 Comment
  SEINET10490606  Lupinus caudatus subsp. caudatus H. Dearing, M. Dearing 1938-6-30 Dearing 2228 Lassen 40 mi. W of susanville, poison lake. 1219 Comment
  RSA3037  Lupinus confertus Carl B. Wolf 1931-9-6 2404 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  UCD170228  Lupinus croceus K. M. Meyer; A. Townesmith 2007-7-23 154 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
  JEPS81670  Lupinus lepidus var. confertus L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1968-8-12 2118 Lassen around Honey Lake just n Milford; Honey Lake just n of Milford 1310 Comment
  NY716913  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Highway 395 ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  JEPS88206  Lupinus lepidus var. sellulus Vernon H. Oswald and Lowell Ahart 1996-6-24 7867 Lassen Papoose Meadows located 0.5 mi e of Eagle Lake Rd (A!), and 2.5 mi s of Eagle Lake, 0.2 mi s of the cabins Papoose Meadows; Modoc Plateau, Papoose Meadows 1633 Comment
  UC1481378  Lupinus lepidus var. sellulus B. J. Cox 1971-6-11 3186 Lassen 3 mi E of Westwood ( on Ca. Hwy. 36) 1607 Comment
  RSA121632  Lupinus leucophyllus G. A. Fischer, Irwin H. Johnson 1933-7-12 204 Lassen Grass Valley 1701 Comment
  SEINET9185950 Image available Lupinus leucophyllus Anthony Baniaga 2011-1 437 Lassen Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE 1718 Comment
  SEINET10488726  Lupinus leucophyllus Charles Piper Smith 1947-6-13 Smith 47448 Lassen Highway 299, adin, 1.3 mi west Comment
  SEINET10452640  Lupinus meionanthus Taylor 1982-8-27 Taylor 5050 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  SEINET194955  Lupinus microcarpus var. densiflorus A. A. Heller 1938-6-23 15219 Lassen Along U.S. Highway 395 between Germo and Madeline. 1524 Comment
  CHSC117186  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes 2016-6-7 21018 Lassen On the west edge 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
  CHSC71085  Lupinus nevadensis Vernon H. Oswald; Lowell Ahart 1998-5-22 9113 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
  JEPS103183  Lupinus nevadensis G. Schoolcraft 2000-4-26 2892 Lassen East slopes of Shaffer Mountain 1584 Comment
  RSA32750  Lupinus onustus A. A. Heller 1940-5-22 15662 Lassen Above the Westwood Cemetery. 1524 Comment
  UC725891  Lupinus onustus A. A. Heller 1940-5-22 15662 Lassen above Westwood Cemetary; above the Westwood Cemetary 1524 Comment
  HSC76485  Lupinus sellulus var. sellulus B. J. Cox 1971-6-11 3186 Lassen 3 mi. E of Westwood, Hwy. 36 1608 Comment
  CAS-BOT-BC231452  Lycium barbarum John Thomas Howell 1974-7-8 50512 Lassen Susanville 1295 Comment
  UC766758  Lycium halimifolium R. F. Hoover 1940-10-1 4652 Lassen Johnstonville Comment
  CDA40734  Lycopus americanus Yeager Aug 1929 s.n. Lassen Honey Lake District. 0 Comment
  JEPS107819  Lythrum hyssopifolia Lowell Ahart, John Dittes 2005-6-2 11969 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  RSA0011271  Lythrum hyssopifolia L. Ahart, John Dittes 2005-6-2 11969 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CDA18272  Machaeranthera canescens G. D. Barbe 1974-8-2 1937 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA518407  Machaeranthera canescens var. canescens George K. Helmkamp 1990-10-4 M- 5 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  SFV7756  Madia citriodora T. Gordon, K. Kimbrough 1975-8-15 1212 Lassen 16 miles south of Adin. 1402 Comment
  CAS-BOT-BC343695  Madia elegans Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  CHSC23515  Madia elegans Wayne O. Baum 1971-7-5 71 -16 Lassen S. slope of Gallatin Peak. 2011 Comment
  UC296085  Madia elegans E. B. Babcock and J. L. Collins 1926-7-21 88 Lassen near Peter Lassne's grave; Susanville Comment
  CAS-BOT-BC343692  Madia elegans Gary Schoolcraft 1985-8-5 1501 Lassen South of Doyle 1402 Comment
  UC33229  Madia exigua M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  CAS-BOT-BC334689  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  RSA713116  Madia minima L. P. Janeway, B. Castro 2005-7-10 8481 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01 1859 Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CHSC4978  Malva neglecta R. Clicquennoi 1967-6-23 11 Lassen In a large vernal pool area 1/4 mi n of Eagle Lake Biology Station, e central side of Eagle Lake. 1554 Comment
  CDA5693  Marrubium vulgare T. C. Fuller 1964-10-8 12704 Lassen West side of Highway 395 to Standish, 1 mile south of Secret Valley. 0 Comment
  UC1192360  Marsilea Verne Grant and Irving Schneider 1947-7-31 8219 Lassen irrigation ditch running sw into State Fish and Game nesting area on w end Section 19 Madeline Plain Comment
  JEPS89847  Marsilea oligospora Dean W. Taylor 1974-6-14 3712 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd.; Modoc Plateau, Poison Lake 1615 Comment
  CAS-BOT-BC67834  Marsilea vestita R. K. Gierisch; D. H. Esplin 1969-8-25 3597 Lassen Harvey Valley 1676 Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  CHSC65287  Marsilea vestita subsp. vestita Vernon H. Oswald; Lowell Ahart 1995-8-14 7201 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  CHSC112768  Matricaria discoidea Lowell Ahart; John Dittes 2013-7-22 18862 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC64862  Matricaria discoidea Vernon H. Oswald; Lowell Ahart 1995-6-19 6876 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. Along the road. 1383 Comment
  CHSC7653  Matricaria discoidea Jesse Langdon 1969-6-3 26 Lassen Susanville, Soil Conservation Office. 1310 Comment
  CHSC99286  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-20 14911 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC348267  Matricaria occidentalis M. S. Taylor 1982-6-12 4651 Lassen In Hartson Lake Refuge, ca. 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville 1222 Comment
  UCD107934  Medicago sativa P. B. Kennedy 1927-9-1 s.n. Lassen Standish. Comment
  UC584328  Melica bulbosa G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2283 Lassen e slope and summit Diamond Mt. 2194 Comment
  RSA0011454  Mentha arvensis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46983 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  UC1594650  Mentha canadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5109 Lassen Bridge Creek entering McCoy Flat Reservoir (on the s side of Hwy 44 between Old Station and Susanville); Bridge Creek entering McCoy Flat Reservoir 1691 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
  NY694984  Mentzelia albicaulis N. H. Holmgren 1980-7-4 9507 Lassen Observation Peak, south side of the mountain, 18 km (11 mi) air distance east of Ravendale 1890 Comment
  RSA715553  Mentzelia albicaulis L. Ahart, John Dittes 2005-6-1 11888 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  UCD55287  Mentzelia albicaulis Ellen Dean; Gary Schoolcraft 2006-5-16 3106 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  UC1609444  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  CHSC66392  Mentzelia dispersa Vernon H. Oswald; Lowell Ahart 1996-6-17 7772 Lassen Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants in dry soil on the edge of the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  UC506973  Mentzelia dispersa George A. Fischer, Irwin H. Johnson 1933-7-12 F 229 Lassen Lassen Forrest, Patterson Flat 1737 Comment
  SD130462  Mentzelia dispersa John Thomas Howell, Gordon H. True 1973-8-1 50204 Lassen The Sierra Nevada. Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville. 2164 Comment
  CHSC20266  Mentzelia laevicaulis J. Pitts 1972-7-20 334 Lassen Found on hwy 139, 10 mi n of Susanville. Comment
  SEINET194902  Mentzelia pinetorum A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. Transition Life Zone. 1524 Comment
  CHSC27075  Menyanthes trifoliata Robert A. Schlising 1978-8-1 3332 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  CAS-BOT-BC231081  Mertensia oblongifolia Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-14 86- 39 -1 Lassen 1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale 1706 Comment
  CHSC101036  Micranthes nidifica John Dittes 2008-5-22 1522 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca. 480 feet north of intersection of Hwy 139 and FS Road 36N02. 482 Comment
  SD8330  Micranthes odontoloma Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
Read comments
Apr 29 2013
  SEINET5345127  Micromonolepis pusilla A. Tiehm 1980-1 5757 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC322657  Microseris laciniata G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area south of TulePatch Spring 1463 Comment
  CAS-BOT-BC349300  Microseris nutans A. M. Vollmer; L. Beane 1953-7-1 53 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS126531  Microseris nutans Lowell Ahart, John Dittes 2016-6-7 21022 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. Comment
  UC1136771  Microseris nutans L. R. Short 1936-6-1 S- 353 Lassen Lassen Forest 1859 Comment
  CHSC71094  Microsteris gracilis Vernon H. Oswald; Lowell Ahart 1998-5-22 9100 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
  RSA122925  Microsteris gracilis subsp. humilis L. R. Short, Wm. Gansberg 1936-6-2 S- 363 Lassen Lassen [National] Forest. MDM, Burgess Spr. Exp. Range 1860 Comment
  RSA104220  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 21757 Lassen Sage brush flat about Lassen County: 8 miles S of Madeline 1280 Comment
  NY963916  Microsteris gracilis var. gracilis W. W. Eggleston 1911-5-29 6762 Lassen Vicinity of Doyle Station 1290 Comment
  UC1776670 Image available Mimulus arvensis G. Schoolcraft 1994-7-6 2356 Lassen About 2 miles west of Boot Lake 2103 Comment
  JEPS126529  Mimulus guttatus Lowell Ahart, John Dittes 2016-6-7 21009 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. Comment
  JEPS127176  Mimulus guttatus Lowell Ahart, John Dittes 2016-7-15 21224 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC27028  Mimulus guttatus Mrs. C. C. Bruce June 1898 2276 Lassen Shumway Comment
  JEPS97419  Mimulus latidens Vernon H. Oswald and L. Ahart 1995-6-19 6887 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395 1350 Comment
  JEPS107380  Mimulus mephiticus Lowell Ahart, John Dittes 2005-6-1 11869 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1136833  Mimulus microphyllus L. R. Short and J. Warren 1936-6-10 S- 417 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1856 Comment
  UC27054  Mimulus moniliformis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CDA38387  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen By south side of Highway 44, vicinity of Bogard Campground. Comment
  SEINET10929288  Mimulus nanus Paul Gallian, David B. Dunn 1971-6-2 Gallian 467 Lassen 6 mi n of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  HSC22960  Mimulus nanus var. mephiticus John Pratt 1970-7-11 76 Lassen At base of Dyer Mtn lookout tower. Comment
  HSC63954  Mimulus nanus var. mephiticus Teresa Prendusi 1980-7-1 Lassen Champ's Flat 1707 Comment
  JEPS29741  Mimulus nanus var. mephiticus Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8496 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  LA209350  Mimulus nanus var. mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 sn Lassen Near Old Chat Comment
  RSA535802  Mimulus nanus var. mephiticus David M. Thompson 1988-6-1 923 Lassen 2.7 mi NW of Milford along Hwy 395. 1250 Comment
  UC27047  Mimulus nanus var. mephiticus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS11060  Mimulus primuloides Brown and Wieslander 1922-7-30 27 Lassen Martin Springs Eagle Lake Comment
  UC1063104  Mimulus pulsiferae A. Simontacchi 1940-6-15 862 Lassen 2.3 mi ssw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA536393  Mimulus pygmaeus Rick Crowther 1991-5-28 s.n. Lassen Swains Hole Reservoir, 3 miles N of Hwy 44 off USGS Road 33N18. 1619 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
  HSC26594  Mimulus torreyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19161 Lassen 3 mi. N of Westwood Comment
  JEPS79150  Mimulus torreyi L. R. Heckard with R. Bacigalupi 1980-6-12 5255 Lassen ne Westwood (near golf course) 1554 Comment
  CAS-BOT-BC384031  Mirabilis laevis var. villosa M. Bourell 1997-5-31 5881 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  SEINET10498937  Monardella odoratissima Mary Susan Taylor 1974-1 Taylor 275 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC213934  Monardella odoratissima subsp. pallida Margaret M. Hanna 1956-6-3 927 Lassen Highway 299, 2 mi. west of Nubeiber 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
  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
  OBI77205  Monolepis nuttalliana Anthony Baniaga 2011-7-23 462 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  UC1136461  Monolepis nuttalliana A. Simontacchi 1940-6-4 810 Lassen 14.8 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. 1783 Comment
  UC1567380  Monolepis nuttalliana G. Schoolcraft 1989-5-16 1879 Lassen w. of Hwy. 395 Secret Valley 1347 Comment
  CHSC64849  Montia chamissoi Vernon H. Oswald 1995-6-26 6924 Lassen Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally bundant in shallow water in a rocky, roadside streamlet. 1712 Comment
  UC1776709  Montia chamissoi G. Schoolcraft 1994-7-7 2452 Lassen About 1 mile W of Boot Lake 2194 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
  UC1951065  Montia linearis Debra Valov 2007-5-22 2007075 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. 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
  JEPS107815  Muhlenbergia asperifolia Lowell Ahart, John Dittes 2005-6-2 11972 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  POM115416  Muhlenbergia asperifolia Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCD86529  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UC1024665  Muhlenbergia filiformis Leo Whitney 1934-8-15 2184 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UCD86769  Muhlenbergia jonesii A. H. Shunk 1923-1 12 Lassen Bogard Ranger Station. Comment
  RSA268991  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1972-7-24 5812 Lassen Lassen National Forest; 17 miles NW of Susanville, along Hwy 44 1128 Comment
  UCD86955  Muhlenbergia richardsonis Malcolm A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline. Comment
  SEINET4690286  Muhlenbergia richardsonis G. Schoolcraft 1999-6-30 2852 Lassen Small res. 1 mi. w. of Horne Ranch-12 mi. e. of Ravendale, CA., Susanville 1646 Comment
  CHSC60917  Myosurus apetalus var. borealis Vernon H. Oswald; Lowell Ahart 1993-7-8 5651 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along the edge of a wet pool on the E side of the railroad, which parallels the lake shore at this point. 1709 Comment
  RSA0035919  Myosurus minimus Lowell A. Ahart, John Dittes 2008-6-20 14940 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC133072  Nama aretioides var. multiflora Dr. Gustav Eisen 1891-1 Lassen Honey Lake Comment
  POM126780  Nama densa Franklin P. Nutting s.n. Lassen Eagle Lake. Comment
  CHSC60903  Nama densa var. densa Vernon H. Oswald; Lowell Ahart 1993-7-8 5658 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  UC1609381  Nama densa var. densa Vernon H. Oswald and Lowell Ahart 1993-6-14 5539 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on w shore Eagle Lake); w shore Eagle Lake, at Sandy Beach 1566 Comment
  UC735061  Nama densa var. densa Lincoln Constance 1946-7-3 3098 Lassen w edge of Eagle Lake at Spauldings Eagle Lake; w edge of Eagle Lake at Spaldings 1706 Comment
  HSC75910  Navarretia breweri D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19274 Lassen Harvey Valley near Cone Springs 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
  UC125019  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  HSC63771  Navarretia breweri Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  CHSC27643  Navarretia capillaris George Deniso 1978-7-21 98 Lassen E end of Mahogany L., S of Eagle L. Near E shore of lake. 2060 Comment
  CHSC29885  Navarretia capillaris Robin L. Ondricek 1978-7-5 89 Lassen At the edge of the trees on the ne side of Mahogany Lake. 2057 Comment
  JEPS28649  Navarretia capillaris George W. Gillett 1957-7-21 861 Lassen 300 yards n summit Juniper Lake-Cameron Meadow trail (Lassen Volcanic National Park); , Juniper Lake-Cameron Mdw trai 2118 Comment
  RSA702598  Navarretia capillaris L. P. Janeway 2004-6-26 8148 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  CHSC6208  Navarretia divaricata W. Vinyard 1946-6-12 Lassen Eagle Lake. Willow Creek. 1371 Comment
  JEPS126569  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2016-6-7 20995 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC23861  Navarretia intertexta subsp. propinqua A. W. Harvilik 1967-7-7 38 Lassen Collected on hwy. 139 ca. 6 mi from Susanville. 1463 Comment
  CHSC34346  Navarretia intertexta subsp. propinqua K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5808 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  JEPS121307  Navarretia intertexta subsp. propinqua Lowell Ahart 2013-7-22 18853 Lassen 10 yards S of a man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1594648  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5101 Lassen 1.2 mi se County Rd. A21 (Long Lake on the s of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  CHSC34342  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5853 Lassen Ca. 0.2 mi n of Hwy. 44, on Pittville Rd. Comment
  CHSC66253  Navarretia leucocephala subsp. minima Vernon H. Oswald; Lowell Ahart 1996-6-24 7847 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  CHSC99736  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2008-6-20 14952 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  HSC82246  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1980-7-6 5986 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS114396  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  NY1012788  Navarretia leucocephala subsp. minima N. H. Holmgren 1980-7-3 9470 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  UC23681  Navarretia leucocephala subsp. minima J. Burtt Davy Jun 17 1897-Jun 24 1897 3362 Lassen Honey Lake Valley Comment
  CAS-BOT-BC230388  Navarretia leucocephala subsp. minima Peter H. Raven; Otto T. Solbrig 1958-6-17 13296 Lassen Along US Highway 395, 4.8 miles S of Madeline Comment
  UC1137583  Navarretia linearifolia subsp. linearifolia A. Simontacchi 1940-6-4 803 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1143039  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  HSC103518  Navarretia sinistra subsp. sinistra Thomas W. Nelson, Jane Nelson 1986-6-23 8164 Lassen Along State Route 44, 14.5 mi. NW of junction with State Route 36. 1646 Comment
  CHSC93691  Nemophila parviflora var. austiniae Lowell Ahart; John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC1069208  Nemophila pedunculata A. Simontacchi 1940-5-14 713 Lassen 10.2 mi e Coyote Spring; Halls Flat Quad., Lassen National Forest, e of Coyote Spring Comment
  CHSC44642  Nestotus stenophyllus J. D. Jokerst 1983-5-30 1795 Lassen Ca. 1.5 miles north of the north edge of Eagle Lake ca. 1.0 mile N of Eagle Lake Rd 50 meters west of Highway 139. Comment
  UC1137647  Nestotus stenophyllus A. Simontacchi 1940-5-17 749 Lassen 1.1 mile SSW of Dixie Spring 1699 Comment
  SJSU11381  Nicotiana attenuata M. R. Kempf 1965-7-12 294 Lassen Eagle Lake 1584 Comment
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 Comment
  SEINET10729606  Nuphar lutea subsp. polysepala Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 845 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. T31N R7E S26 SW 1/4. 1981 Comment
  UC635505  Nuphar lutea subsp. polysepala Dorothy Tebbe 1929-7-30 132 Lassen in a pond near Lake Almanor Comment
  UC8805  Nuphar lutea subsp. polysepala J. Burtt Davy Jun 17 1897-Jun 24 1897 3336 Lassen Honey Lake Valley, deep pools of Susan River Susan River; Honey Lake Valley, Susan River Comment
  UC66124  Oenothera deltoides subsp. piperi P. B. Kennedy 1901-6-10 Lassen R.R. station Constantia Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  SEINET5345714  Oenothera deltoides var. piperi P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  CHSC29904  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 33 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  CHSC9548  Onobrychis viciifolia R. Clicquennoi 1967-6-24 13 Lassen .2 mi w of main rd. 3 mi e of Eagle Lake Biological Station on rd. to Murrer's Meadow. 1554 Comment
  CAS-BOT-BC349945  Onopordum acanthium O. Havens 1963-8-9 s.n. Lassen P. S. Hall ranch, Doyle Comment
  CAS-BOT-BC350046  Oreostemma alpigenum var. andersonii John Thomas Howell 1934-7-9 12515 Lassen Bridges Creek Spring Comment
  JEPS88402  Oreostemma alpigenum var. andersonii Vernon H. Oswald and Lowell Ahart 1996-8-1 8121 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi n Dyer Mtn. Lookout (ssw of Westwood) 1737 Comment
  JEPS88564  Oreostemma alpigenum var. andersonii Vernon H. Oswald and Lowell Ahart 1996-8-1 8120 A Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi n Dyer Mtn. Lookout (on downhill side of road, ssw of Westwood) 1737 Comment
  SEINET230278  Orobanche corymbosa Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9509 Lassen Observation Peak south side of mountain 18 km (11mi) airline distance east of Ravendale. 1890 Comment
  JEPS103166  Orobanche corymbosa Beth Corbin 2002-7-10 1087 Lassen Madeline Plains, 5 air mi N of top of Observation Peak. 1627 Comment
  JEPS22322  Orobanche uniflora subsp. occidentalis Peter H. Raven and Otto T. Solbrig 1958-6-16 13251 Lassen 4.5 miles east of Westwood on State Highway 36. Comment
  UC1609174  Orobanche uniflora subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5615 Lassen N of Highway 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. Comment
  JEPS9435  Orthocarpus cuspidatus subsp. cryptanthus Brown and Wieslander 42 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  HSC63830  Orthocarpus cuspidatus subsp. cryptanthus Teresa Prendusi 1980-7-8 Lassen Grasshopper Ridge, 37 mi. N of Susanville off Hwy. 139, 5 mi. E of Grasshopper Valley 1738 Comment
  POM44256  Orthocarpus hispidus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UCD39135  Orthocarpus luteus Beecher Crampton 1964-6-26 7085 Lassen 35 miles n.w. Susanville, Gray's Valley, 3 miles north Bogard Ranger Station. Comment
  UC1776707  Osmorhiza occidentalis G. Schoolcraft 1994-7-7 2447 Lassen About 1 mile W of Boot Lake 2407 Comment
  NY404414  Oxytheca dendroidea E. K. Balls 1952-10-10 18140 Lassen 5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas 1280.2 Comment
  CAS-BOT-BC413245  Oxytheca dendroidea subsp. dendroidea Robert F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  CHSC63381  Packera cana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6312 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  CHSC99145  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
  JEPS95971  Packera multilobata Vernon H. Oswald and L. Ahart 1999-6-9 9734 Lassen Hwy. 395 northeast of Susanville and north of Smoke Creek Ranch Rd. at Mud Flat: T30N R15E Sect. 3, 4425 ft elevation, dry playa surrounded by sagebrush scrub 1348 Comment
  SEINET10537860  Paeonia brownii Paul Gallian, David B. Dunn 1971-6-2 Gallian 503 Lassen 6 mi n of hallelujah hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC42176  Pascopyrum smithii C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. 2194 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
  JEPS68204  Pectocarya penicillata W. L. Jepson 1918-8-2 7770 Lassen Beckwith Pass 1463 Comment
  UC79143  Pectocarya penicillata T. S. Brandegee 1889-6-23 Lassen Honey Lake Comment
  JEPS10727  Pedicularis groenlandica Chesnut and Drew Lassen Lassen Peak Comment
  JEPS94553  Pedicularis groenlandica Vernon Oswald and Lowell Ahart 1997-6-24 8652 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  OBI75871  Pedicularis groenlandica Anthony Baniaga 2011-8-9 494 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  UC447220  Pedicularis groenlandica Franklin P. Nutting Lassen Pine Creek 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
  RSA165523  Penstemon deustus var. pedicellatus Clare B. Hardham 1961-6-17 7532 Lassen Rte. 395 between Lassen and Alturas. Comment
  CHSC4862  Penstemon gracilentus R. Carter 1967-7-7 580 Lassen Collected ca. 20 yds from e shore of small reservoir. Dean's Meadow. Comment
  NY600695  Penstemon gracilentus G. H. True Jr. 1938-7-14 959 Lassen Summit on Milford Grade, just on north slope 1676.4 Comment
  POM44652  Penstemon gracilentus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 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
  CAS-BOT-BC245656  Penstemon janishiae G. Schoolcraft 1997-8-6 2660 Lassen Diamond Mtn. 2316 Comment
  SEINET10548051  Penstemon miser Mary Susan Taylor 1974-1 Taylor 276 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. 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
  UC423645  Penstemon neotericus David D. Keck 1930-7-23 957 Lassen two mi e Westwood; Sierra Nevada, e of Westwood 1493 Comment
  NY627251  Penstemon neotericus K. A. Vincent 1986-7-19 4381 Lassen Sierra Nevada, Roop Mountain; along CA A1 ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  NY627254  Penstemon neotericus K. A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mountain; along CA 36, ca. 1 mile east of jct. CA A21 on east side of Westwood. 1524.0 Comment
  POM172676  Penstemon newberryi subsp. newberryi Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  JEPS29104  Penstemon roezlii Lauramay T. Dempster 1961-6-17 1680 Lassen just w Tule Mountain; just w of Tule Mountain 1645 Comment
  SBBG28920  Penstemon roezlii D. D. Keck 1954-7-23 954 Lassen 12 mi W of Susanville 1676 Comment
  CAS-BOT-BC239494  Penstemon rydbergii var. oreocharis Lassen 1927 G. S. Crew 1927-7-1 49 Lassen Lassen National Forest, Bogard R.S. pasture 1712 Comment
  CAS-BOT-BC239502  Penstemon rydbergii var. oreocharis Al Simontacchi 1940-6-3 792 Lassen Lassen National Forest, 8.3 miles SE of Alcohol Jacks Cabin 1706 Comment
  CAS-BOT-BC239505  Penstemon rydbergii var. oreocharis James Jokerst 1983-7-25 1895 Lassen Near Madeline Plains 1614 Comment
  CHSC12483  Penstemon rydbergii var. oreocharis Carol Weld 1969-6-20 15 Lassen Dean's Meadow. 1950 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
  CHSC4791  Penstemon rydbergii var. oreocharis R. Carter 1967-7-7 582 Lassen Collected at W end of reservoir. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  HSC63732  Penstemon rydbergii var. oreocharis Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N end of Eagle Lake 1707 Comment
  JEPS11475  Penstemon rydbergii var. oreocharis Brown and Wieslander 1922-7-18 50 Lassen Eagle Lake , Eagle Lake (Martin Sprs) Comment
  NY651293  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 3 miles east of Westwood 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
  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
  CHSC25148  Penstemon speciosus L. E. Ray 1967-6-24 52 Lassen Collected ca. 8 miles s ELBS, Deans Meadow. 1950 Comment
  CHSC5916  Penstemon speciosus J. B. Kimsey 1946-6-10 Lassen 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
  JEPS15475  Penstemon speciosus Joseph and Hilda W. Grinnell 1938-6-13 1101 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  POM194755  Penstemon speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats). 1494 Comment
  RSA340000  Penstemon speciosus Noel Holmgren, Patricia K. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 (9.2 mi) east of US Hwy 395 via Rye Patch Canyon, 19 km (12 mi) airline distance ESE of Ravendale. 1677 Comment
  RSA401878  Penstemon speciosus Rockwell 1925-07 s.n. Lassen Eagle Lake. Comment
  UC1063512  Penstemon speciosus A. Simontacchi 1940-6-8 24250 Lassen 4.1 mi e Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC1520676  Penstemon speciosus Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9518 Lassen 19 km (12 mi) airline distance ese Ravendale (14.8 km (9.2 mi) e U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1680 Comment
  UC423512  Penstemon speciosus David D. Keck 1930-7-23 947 Lassen Reno Junction Sierra Nevada, Reno Junction (southeastern Lassen County) 1493 Comment
  CAS-BOT-BC239661  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36, west of Susanville 1371 Comment
  UC423673  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  UC887362  Penstemon sudans Lewis S. Rose 1940-6-15 40594 Lassen 10 mi n Susanville (Round Valley); , n of Susanville 1524 Comment
  RSA594173  Peraphyllum ramosissimum S. O. Mattoon 1974-6-2 42 Lassen Cottonwood Mountains: Vicinity of Dodge Res.; Lassen County Road 502. 1829 Comment
  CHSC29907  Perideridia bolanderi Robin Ondricek; Wesley Dempsey 1978-6-7 43 Lassen Ridge E of Lower Dry Lake, 12.5 mi N of Susanville. 1706 Comment
  CHSC5921  Perideridia bolanderi J. E. Wolf 1946-6-23 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  UC1390005  Perideridia oregana T. I. Chuang and F. Gleason 1963-8-22 5923 Lassen on Hwy 299 0.6 mi se Bieber Comment
  CHSC61234  Persicaria amphibia P. V. Caldwell 1972-7-16 297 Lassen At foot of Black Mtn. on e shore of Eagle Lake. Comment
  CHSC5259  Phacelia adenophora 1944-6-21 Lassen Eagle Lake shore. 1584 Comment
  JEPS17742  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5419 Lassen along Smoke Creek Ranch rd 6.8 mi e jnct. with U.S. 395 1402 Comment
  UCD120256  Phacelia adenophora Philip A. Munz 1947-5-19 11881 Lassen Near road, Madeline. 1676 Comment
  CHSC64789  Phacelia gymnoclada Vernon H. Oswald 1995-5-24 6783 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. 1219 Comment
  SJSU11244  Phacelia hastata J. W. Tilden 1960-6-27 1499 Lassen foot of Moonlight Rd, outskirts of Westwood 1524 Comment
  UC24403  Phacelia hastata subsp. compacta J. Burtt Davy Jun 17 1897-Jun 24 1897 3407 Lassen Chat Honey Lake Valley, Long Valley Comment
  HSC82200  Phacelia heterophylla Thomas W. Nelson, Jane P. Nelson 1980-7-6 6055 Lassen Along Modoc Nation Forest Rd. 2 mi. NE of Ash Creek Campground 1524 Comment
  CHSC91193  Phacelia heterophylla subsp. virgata Lowell Ahart; John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction. 1512 Comment
  CHSC93673  Phacelia heterophylla subsp. virgata Lowell Ahart; John Dittes 2005-6-2 11983 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  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
  RSA152678  Phacelia heterophylla subsp. virgata I. L. Wiggins, Dorothy Wiggins 1961-6-11 16362 Lassen On ridge and along road, near northeast end of Eagle Lake. Comment
  RSA638996  Phacelia heterophylla subsp. virgata Michael A. Vincent 1999-6-9 8585 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
  JEPS2120  Phacelia humilis Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  NY1057847  Phacelia humilis N. H. 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
  UC1537537  Phacelia humilis Gordon H. True Jr. 1938-7-9 907 Lassen near Horse Lake Comment
  UC1562814  Phacelia humilis Barbara Ertter with Gary Schoolcraft 1987-6-16 7196 Lassen saddle on e side Hot Springs Peak (ne side of Honey Lake); Skeedaddle Mountains 2194 Comment
  SEINET5519037  Phacelia linearis J. Young 1982-6-9 s.n. Lassen Adin, M. Meyer's Ranch 1372 Comment
  UCD150392  Phacelia linearis William Anderson 1963-6-2 s.n. Lassen Eagle Lake. Comment
  SEINET5519007  Phacelia lutea var. glandulifera N. H. Holmgren, P. K. Holmgren 1978-6-11 8931 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC159066  Phacelia ramosissima var. eremophila Clare B. Hardham 1971-8-22 18400 Lassen North slopes, Diamond Mountain 2133 Comment
  CHSC59552  Phacelia ramosissima var. ramosissima M> Meyer 1980-7-8 514 Lassen Amongst rocks (lg.) and junipers on top of Grasshopper Ridge. 1724 Comment
  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
  RSA324193  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
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC61165  Phlox diffusa Vernon H. Oswald; Lowell Ahart 1993-5-12 5372 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  POM64961  Phlox diffusa subsp. diffusa Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  UC1137715  Phlox douglasii subsp. rigida L. R. Short 1936-4-28 S- 332 Lassen Burgess Spring Experimental Range Lassen Forest 1737 Comment
  RSA0035915  Phlox gracilis Lowell A. Ahart, John Dittes 2008-6-20 14929 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
  RSA647573  Phlox longifolia Marion P. Harthill 1971-6-21 226 Lassen Ravendale Comment
  CHSC91202  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2005-6-2 11928 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
  POM74317  Phlox speciosa subsp. occidentalis Marcus E. Jones 1897-6-26 10522 Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA715978  Phlox speciosa subsp. occidentalis L. Ahart, John Dittes 2005-6-2 11928 Lassen about 1.4 miles 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. 1499 Comment
  CHSC36495  Phlox stansburyi Theresa Costa 1982-6-4 31 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. Comment
  CHSC64803  Phlox stansburyi Vernon H. Oswald 1995-5-31 6802 Lassen Modoc Plateau. Smoke Creek Rance Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CAS-BOT-BC250985  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia Comment
  RSA772875  Pilularia americana R. F. Thorne, Larry E. DeBuhr 1975-8-22 47209 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  HSC26251  Pinus jeffreyi W. A. Heaton 1965-5-8 32 Lassen Near Fredonyer Pass on Hwy. 36 W of Susanville, Bulk Collection 45 Comment
  SEINET11604123  Pinus jeffreyi D. Charlet, Darryl LeMaire 1994-7-8 1941 Lassen Sierra Nevada, Near summit of Doyle grade 1707 Comment
  CHSC21478  Pinus monticola M. S. Taylor 1975-7-16 841 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. 2133 Comment
  SEINET5323926  Pinus washoensis D. Charlet 1994-7-6 1924 Lassen Madelin Mesa foothills above Madelin Plains. 1689 Comment
  POM204143  Plagiobothrys bracteatus J. T. Howell 1934-7-10 12540 Lassen Patterson Flats Comment
  CHSC27607  Plagiobothrys cognatus Nancy Heiken 1978-7-5 79 Lassen S of Eagle Lake at E shore of Mahogany Lake; meadow at lake margin. 2060 Comment
  CHSC84879  Plagiobothrys cognatus Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 355 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
  UC1609179  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5626 Lassen e of Poison Lake (n of Hwy 44 along Rd 33N47 at ne end of Little Harvey Valley, on small branch of Pine Creek, between Champs Flat and Harvey Valley); Little Harvey Valley, Pine Creek 1737 Comment
  CHSC58837  Plagiobothrys cusickii Vernon H. Oswald; Lowell Ahart 1992-7-16 5113 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  CHSC99538  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
  JEPS107314  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-1 11906 Lassen Depression on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS107810  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-2 11954 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  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
  RSA0105587  Plagiobothrys cusickii Lowell Ahart, John Dittes 2013-7-22 18870 Lassen 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
  CHSC112430  Plagiobothrys hispidulus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18730 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
  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
  JEPS109638  Plagiobothrys hispidulus Dean W. Taylor 2002-6-21 18173 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  UC773949  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1743 Comment
  UC1037242  Plagiobothrys hispidus Leo Whitney 1933-8-20 1995 Lassen Hall's Flat ca 25 mi w of upper end Eagle Lake (Lassen National Forest); Hall's Flat, Lassen National Forest 1737 Comment
  UC1561381  Plagiobothrys hispidus Barbara Ertter with Gary Schoolcraft 1987-6-16 7190 Lassen on s side Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2286 Comment
  UC1609214  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  CAS-BOT-BC228467  Plagiobothrys mollis Peter H. Raven; Otto T. Solbrig 1958-6-17 13258 Lassen Near pond along Highway 395, 7.1 miles W of Standish Comment
  RSA0105581  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA60317  Plagiobothrys tenellus E. K. Balls 1950-5-9 15950 Lassen 12 miles north of Doyle, Hwy 395. 1296 Comment
  JEPS103179  Plantago lanceolata G. Schoolcraft 2000-6-5 2897 Lassen Hwy 395 and Johnstonville Road near Susanville Airport 1310 Comment
  CHSC67073  Platanthera leucostachys Willis Ball 1969-6-26 41 Lassen Above Gallatin Beach. 1615 Comment
  JEPS64411  Platanthera leucostachys Brown and Wieslander 1922-7-17 21 Lassen Martin Sprs. Eagle Lake Comment
  UC845587  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen about 1 mi e Westwood 1524 Comment
  UC890150  Plectritis brachystemon C. L. Hitchcock 6604 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  CHSC117208  Plectritis macrocera Lowell Ahart; John Dittes 2016-6-7 21005 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
  JEPS114707  Plectritis macrocera Lowell Ahart, John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  HSC63959  Plectritis macrocera Teresa Prendusi 1980-5-19 Lassen Saddle Rock. 1524 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
  CHSC7691  Poa Beverley J. Wise 1969-6-4 124 Lassen 10 mi. east of Susanville (Janesville), cut in hill next to cemetery. 1310 Comment
  UCD143647  Poa George A. Fischer; Irwin H. Johnson 1933-7-14 F 245 Lassen Lassen Nat'l Forest; Patterson Flat. 1737 Comment
  CAS-BOT-BC255673  Poa bolanderi John Thomas Howell; Gordon H. True 1973-8-1 50233 Lassen E slope of Diamond Range S of Susanville 2133 Comment
  CAS-BOT-BC227203  Poa bulbosa Barbara T. Keller 1974-5-7 1265 Lassen Along highway 395 about 5 miles west of Hurlong, 1/4 mile south of Honey Lake Comment
  RSA450966  Poa bulbosa Barbara Shervanick 1974-5-7 1265 Lassen Highway 396, just south of Milford; Cascade Mountain Range 1372 Comment
  UC1100399  Poa bulbosa Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 758 Lassen on Great Northern RR, Hwy 299 <Nubeiber> Comment
  CAS-BOT-BC247321  Poa pratensis John Thomas Howell; Gordon H. True 1973-8-1 50183 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  RSA715619  Poa pratensis L. Ahart, John Dittes 2005-6-1 11848 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
  SEINET10523388  Poa pratensis Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3113 Lassen 6 mi N of Hallelujah Jct. on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  SEINET10867718  Poa pratensis Katherine L. Morris 1973-5-25 Morris 243 Lassen Collected 7.6 mi NW of Jct of Hwy 36 & 44 on Hwy 44, in an area of yellow pine and incense cedar; very moist area. Comment
  JEPS127638  Poa secunda Alejandro Brambila, Michael Dolan 2016-6-22 CA 320 -150 Lassen Ash Valley road going west before Holbrook Reservoir. Comment
  POM203054  Poa secunda J. T. Howell 1934-7-6 12459 Lassen Harvey Valley Comment
  RSA647525  Poa secunda Marion P. Harthill 1972-6-17 824 Lassen Madeline. 1677 Comment
  RSA647530  Poa secunda Marion P. Harthill 1972-6-17 820 Lassen Madeline. 1677 Comment
  SD34480  Poa secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester, mountain meadow 1524 Comment
  UCR266833  Poa secunda G. B. Stabler 1922-7-9 s.n. Lassen Constantia [former settlement, in Long Valley 45 miles (72 km) southeast of Susanville] 1372 Comment
  CAS-BOT-BC236251  Poa secunda subsp. juncifolia John Thomas Howell 1934-6-14 12172 Lassen Near Lost Lake, Warner Mountains 2438 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-BC247053  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 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
  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
  UCD92427  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 s.n. Lassen Near Fruit Grower's Supply Co., Camp 10. Comment
  CAS-BOT-BC236181  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49196 Lassen Elysian Valley NW of Janesville 1325 Comment
  HSC38602  Poa secunda subsp. secunda J. P. Smith, J. O. Sawyer 1971-5-23 4660 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  UC1024836  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3220 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC127313  Poa secunda subsp. secunda Milo S. Baker Lassen Dixie Valley Comment
  UCD90488  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  UCD91638  Poa secunda subsp. secunda A. L. Hormay 1941-6-26 37 Lassen Lassen National Forest. Pine Creek, Bogard Ranger Station. 1706 Comment
  UC1136984  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Forest 1859 Comment
  CHSC110774  Pogogyne floribunda Dean Wm. Taylor 2012-7-18 21276 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 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
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  CDA40272  Polemonium micranthum Lee Wheeler 1960-4-13 3941 Lassen At the fairgrounds, Susanville. 0 Comment
  CAS-BOT-BC74169  Polyctenium fremontii Arnold Tiehm; Jan Nachlinger; Gary Schoolcraft 1984-6-25 8825 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81. 1828 Comment
  NY182309  Polyctenium fremontii A. Tiehm 1984-6-25 8825 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81. 1828.8 Comment
  NY182333  Polyctenium fremontii H. D. D. Ripley 1944-5-30 5970 Lassen South of Ravensdale. 1691.6 Comment
  RSA0065537  Polyctenium fremontii M. P. Harthill 1971-6-21 215 Lassen Susanville. Comment
  SEINET229584  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Hwy 395. 1609 Comment
  RSA0004885  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  NY404577  Polygonum amphibium G. H. True Jr. 1936-6-22 514 Lassen Honey Lake Valley 1219.2 Comment
  UC1192333  Polygonum amphibium var. emersum Verne Grant and Irving Schneider 1947-7-30 8192 Lassen Tule Lake; s point of w embayment Comment
  UC1536797  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch Honey Lake Valley Comment
  CAS-BOT-BC419766  Polygonum argyrocoleon Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pittville 1219 Comment
  CAS-BOT-BC419770  Polygonum argyrocoleon Luella Bass 1976-9-1 s.n. Lassen Willard Creek w. of Susanville Comment
  UC1536794  Polygonum bistortoides Gordon H. True Jr. 1939-6-15 1036 Lassen w Grasshopper Valley; Bullard Lake Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC850047  Polygonum douglasii subsp. spergulariiforme M. S. Baker and F. Nutting 1894-1 Lassen Lassen Co. Comment
  SD7880  Polygonum minimum Mrs. R. M. Austin none given Lassen Lassen Co. Comment
  UC1603209  Polygonum polygaloides J. Guardino 1993-6-9 281 B Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603213  Polygonum polygaloides J. Guardino 1993-5-22 167 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  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
  CAS-BOT-BC419859  Polygonum polygaloides subsp. confertiflorum George W. Gillett 1957-7-22 874 Lassen Lassen Volcanic National Park. Snag Lake. 1850 Comment
  CHSC58507  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald 1992-7-3 5047 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Cameron Meadow, between the trail to Jakey L. and the trail to Horseshoe L. 1981 Comment
  CHSC6231  Polygonum polygaloides subsp. kelloggii R. Gein 1946-6-12 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  CHSC99128  Polygonum polygaloides subsp. kelloggii Lowell Ahart; John Dittes 2008-6-19 14897 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
  UC1136191  Polygonum polygaloides subsp. kelloggii A. Simontacchi 1940-5-21 760 Lassen 4.1 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS97417  Polygonum ramosissimum Vernon H. Oswald and L. Ahart 1995-6-19 6880 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  UC1191236  Polygonum ramosissimum Verne Grant and Irving Schneider 1947-8-1 8227 Lassen irrigation ditch running sw into State Fish and Game Nesting area (w end of Section 19); Madeline Plain Comment
  UC773924  Polygonum sawatchense subsp. oblivium L. R. Short 1936-5-22 S- 352 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  JEPS87367  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd (Lassen A1) 0.5 mi w Spaulding Tract Rd. (Rd. 518, 33N89) (ca 3 mi w of Eagle Lake) 1810 Comment
  UC1037194  Polygonum shastense Leo Whitney 1934-9-16 1512 Lassen Lassen Peak; s side 2560 Comment
  RSA82761  Polygonum spergulariiforme J. M. Tucker 1950-7-25 1976 Lassen 33 miles NW of Susanville, on road from Pitville Comment
  JEPS88211  Polypogon monspeliensis Vernon H. Oswald and Lowell Ahart 1996-6-17 7791 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, trailside just s.e. of Hwy 36 bridge spanning the Susan R.); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  UC1024708  Polypogon monspeliensis Leo Whitney 1934-8-6 2136 Lassen Susan River Honey Lake Valley; , Honey Lake Valley 1371 Comment
  JEPS17746  Porterella carnosula Rimo Bacigalupi with G. T. Robbins 1955-7-20 5408 Lassen 4.4 mi s Patterson Ranger Station (Long Valley, southern end of Warner Mts., Modoc National Forest); Modoc National Forest, s end of Warner Mts. 2057 Comment
  SEINET3795835 Image available Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1978-6-10 8901 Lassen Madeline Plains, Coyote Flat, 14.5 KM (9 mi) ENE of Termo and 13 km (8 mi) airline deistance 1631 Comment
  SEINET10460820  Porterella carnosula Taylor 1988-6-6 Taylor 9007 Lassen Road from Bieber to Lookout, 0.5 miles south of the Modoc County Line 1250 Comment
  SEINET10460823  Porterella carnosula Nutting NUTTING s.n. Lassen Flat near Eagle Lake Comment
  SEINET10460834  Porterella carnosula Rimo Bacigalupi 1955-7-20 Bacigalupi 5408 Lassen Drying clay-loam mud at edges of pool at low spot in Long Valley, 4.4 miles south of Patterson Ranger Station, Modoc National Forest, southern end of Warner Mts. 2057 Comment
  SEINET12326931  Porterella carnosula Unknown 1978-1 15 Lassen E shore Mahogany L., S of Eagle L., T31N;R11E, sec. 21 2060 Comment
  CHSC7716  Portulaca oleracea Beverley J. Wise 1969-6-3 6 Lassen Susanville, 833 Mark St. 1310 Comment
  CHSC4838  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CAS-BOT-BC452093  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  UCR228122  Potamogeton diversifolius R. F. Thorne, Larry E. DeBuhr 1975-8-22 47201 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  CAS-BOT-BC452150  Potamogeton diversifolius R. F. Thorne; Larry E. DeBuhr 1975-8-22 47201 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC4804  Potamogeton filiformis R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UCD138278  Potamogeton illinoensis G. Schoolcraft 1996-9-11 2562 Lassen Willow Creek below petroglyphs and above dam. 1432 Comment
  CAS-BOT-BC453913  Potamogeton pectinatus Arnold Tiehm; Gary Schoolcraft 1984-8-14 9246 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line 1698 Comment
  SEINET3893473  Potamogeton pusillus Arnold Tiehm, Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0 1698 Comment
  JEPS28699  Potamogeton richardsonii George W. Gillett 1957-7-26 919 Lassen on e side of Butte Lake (near island, near shore); Lassen Volcanic National Park 1844 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
  RSA233761  Potamogeton richardsonii Robert F. Thorne, C. W. Tilforth 1969-9-5 39140 Lassen Said Valley Reservoir. Comment
  RSA772322  Potamogeton richardsonii Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  UC1100087  Potamogeton zosteriformis Verne Grant, Irving Schneider 1947-8-24 8272 Lassen nw shore of Blue Lake (Northern Lassen County) Comment
  CHSC64894  Potentilla basaltica Vernon H. Oswald 1995-6-26 6933 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the w side of the road adjacent to a flat of low sagebrush. 1542 Comment
  CAS-BOT-BC540369  Potentilla gracilis var. fastigiata B. C. Cain 1925-8-24 76 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  POM260871  Potentilla gracilis var. fastigiata Alice Eastwood 1940-6-11 7997 Lassen Bieber Comment
  CHSC4758  Potentilla millefolia R. Carter 1967-7-14 614 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir. Comment
  OBI77047  Potentilla millefolia Anthony Baniaga 2011-6-1 296 Lassen Lassen NF. Bogard Work Station helicopter landing ara, W of RR tracks, N of rd to Crater lake. Pine Crk Valley quad T32N R8e sec 33 NE of SW 1737 Comment
  CAS-BOT-BC158517  Potentilla millefolia 1927-6-10 7 Lassen Lassen National Forest. Norval Flat 2051 Comment
  CHSC30570  Prunella vulgaris Sori H. Shad 1970-6-24 31 Lassen Collected in upper Murrer's Meadow. 1524 Comment
  POM70071  Prunella vulgaris var. lanceolata Marcus E. Jones 1897-7-25 s.n. Lassen Susanville. 1341 Comment
  SD149134  Prunella vulgaris var. lanceolata John Thomas Howell, Gardon H. True and Margaret Williams 1973-6-28 49443 Lassen Elysian Valley, west of Janesville. 1326 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
  JEPS27652  Prunus emarginata W. L. Jepson 1918-8-2 7788 Lassen Long Valley 1371 Comment
  UCD113178  Prunus emarginata Donna Allen 1977-4-20 s.n. Lassen Jamesville grade 1 mile off Highway 89. Comment
  CAS-BOT-BC154771  Prunus virginiana var. demissa L. B. Barlow 1967-7-1 63 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road 1554 Comment
  CHSC7721  Prunus virginiana var. demissa Beverley J. Wise 1969-5-18 192 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On canyon wall. 1554 Comment
  UCD91514  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51999 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  POM112808  Pseudoroegneria spicata subsp. spicata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS48629  Pseudostellaria jamesiana Hilda W. Grinnell 1934-6-1 Lassen top of divide 8 mi sw Susanville 1950 Comment
  SEINET5345383  Pseudotsuga menziesii var. menziesii D. A. Charlet 1996-7-8 2286 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  RSA0011562  Psilocarphus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46990 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC60878  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1993-7-8 5671 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  CHSC75463  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1999-6-9 9752 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  POM40287  Psilocarphus elatior Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC66377  Psilocarphus oregonus Vernon H. Oswald; Lowell Ahart 1996-6-17 7794 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  NY702516  Psoralidium lanceolatum G. Schoolcraft 1991-6-12 2159 Lassen On Sierra Army Depot north of Herlong 1234 Comment
  HSC63951  Puccinellia distans Teresa Prendusi 1980-7-9 1114 Lassen Horse Camp Spring about 39 mi. N of Susanville. 1707 Comment
  JEPS123867  Puccinellia distans Lowell Ahart, John Dittes 2015-7-14 20330 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC112789  Puccinellia lemmonii Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18788 Lassen Depression, on the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS103194  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  SJSU14476  Purshia tridentata W. D. Pitts 1990-5-24 300 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  SEINET10904099  Purshia tridentata Mary Susan Taylor 1974-1 Taylor 260 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC147817  Purshia tridentata var. tridentata Clarence R. Quick 1961-6-21 61 -33 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  SBBG12225  Purshia tridentata var. tridentata A. I. Richardson 1961-5-30 7 Lassen S of Eagle Lake 1402 Comment
  UC1128540  Purshia tridentata var. tridentata C. W. Hanks 1934-9-26 91 Lassen w side Long Valley (near Plumas National Forest); Sierraville Quad. 1432 Comment
  UC1128551  Purshia tridentata var. tridentata A. Simontacchi 1940-6-4 798 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1836 Comment
  UC1137302  Purshia tridentata var. tridentata L. R. Short and Wm. Gansberg 1936-7-9 S- 482 Lassen Burgess Spring Experimental Range; Lassen National Forest 1792 Comment
  CAS-BOT-BC462757  Pyrola dentata John Thomas Howell; Gordon H. True 1973-7-31 50023 Lassen Sierra Nevada: on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  RSA0084317  Pyrola picta Diana D. Jolles, Mary M. Jolles 2011-8-7 479 Lassen Lassen National Forest, within a couple miles north of Susan River on Route 44. 1684 Comment
  SEINET178134  Pyrola picta Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Susancille, Perkins R. 1829 Comment
  UC73543  Pyrola picta Milo S. Baker 1890-1 Lassen Milford Comment
  CAS-BOT-BC362263  Pyrrocoma carthamoides var. cusickii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50695 Lassen Steep rocky slope south and southeast of Diamond Mt. 2286 Comment
  CHSC58834  Pyrrocoma hirta var. lanulosa Vernon H. Oswald; Lowell Ahart 1992-7-16 5129 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
  UC1143034  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1783 Comment
  CDA8517  Pyrrocoma lanceolata var. lanceolata T. C. Fuller 1980-8-6 20315 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  CHSC115718  Pyrrocoma lucida Kirsten Bovee 2012-8-12 Lassen Along Road 28N38 east of south end of Mountain Meadows Reservoir, straddling boundary with private land. Some seven air miles southeast of Westwood, CA. 1554 Comment
  CAS-BOT-BC105245  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles W of Susanville 1371 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
  CHSC7774  Ranunculus Beverley J. Wise 1969-5-18 147 Lassen Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake. 1554 Comment
  SEINET5338283  Ranunculus alismifolius var. hartwegii J. Young 1982-6-9 s.n. Lassen M.Meyers Ranch, Adin, Ca. 1372 Comment
  CHSC7729  Ranunculus alismifolius var. lemmonii Beverley J. Wise 1969-3-4 86 Lassen 7 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1524 Comment
  CHSC36348  Ranunculus aquatilis var. capillaceus M. S. Taylor 1982-6-12 4647 Lassen In pond s side of Hwy 36, n side of West Fork Susan River, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  CAS-BOT-BC379022  Ranunculus aquatilis var. diffusus Peter H. Raven; Otto T. Solbrig 1958-6-17 13256 Lassen in a pond along United States Highway 395, 7.1 mi west of Standish Comment
  CAS-BOT-BC379025  Ranunculus aquatilis var. diffusus M. S. Taylor 1982-6-12 4647 Lassen aquatic in still pond S side of Hwy 36, N side of west fork Susan River, at jct with Willow Creek Rd., ca. 8 mi W of Susanville Comment
  SEINET10536136  Ranunculus cymbalaria Mary Susan Taylor 1974-1 Taylor 268 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  RSA0011455  Ranunculus cymbalaria subsp. saximontanus Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46982 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  JEPS55056  Ranunculus cymbalaria var. saximontanus W. L. Jepson 1918-8-2 7768 Lassen Beckwith Pass; below spring 1463 Comment
  UC9426  Ranunculus cymbalaria var. saximontanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3370 Lassen Honey Lake Valley Comment
  RSA523410  Ranunculus cymbalaria var. saximontanus Rodney H. True 1936-6-26 544 Lassen Honey Lake Valley- Willow Creek Valley Road. 1524 Comment
  JEPS28454  Ranunculus flammula George W. Gillett 1957-7-22 872 Lassen Snag Lake Lassen Volcanic National Park (s shore) 1850 Comment
  CHSC84874  Ranunculus flammula var. ovalis Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 352 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  UC773872  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spring Experiment Range Lassen National Forest 1737 Comment
  CHSC7184  Ranunculus glaberrimus var. ellipticus Lynn R. Thomas 1969-4-17 100 Lassen Ca. 100 yds. w of Rice Canyon Rd., down hillside and just across small creek; 5 mi n of junction with 'Back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  UC1608992  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald and Lowell Ahart 1993-5-12 5383 Lassen Forest Rd 32N08 (to Crater Lake) 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, along creek); Pine Creek 1737 Comment
  UC1776660  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-4-2 2464 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  UC1137287  Ranunculus occidentalis K. E. Bradshaw 1939-5-27 242 Lassen near S. end of Black Mountain Experimental Forest Plot 39-4; Lassen National Forest, Halls Flat Quadrangle 1737 Comment
  UC118184  Ranunculus occidentalis T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  JEPS118446  Ranunculus occidentalis var. occidentalis Lowell Ahart, John Dittes 2011-6-20 17479 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SBBG28521  Ranunculus occidentalis var. ultramontanus M. S. Baker 1952-5-23 Lassen Hwy 36, between Chester and Fredonyer Pass Comment
  NY494904  Ranunculus sceleratus var. multifidus G. Schoolcraft 1991-6-27 2174 Lassen North of Johnstnville Road, 3 miles east of Susanville 1280.2 Comment
  UCD97132  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen Susanville, county fairgrounds. Comment
  CHSC60392  Ranunculus uncinatus var. uncinatus Mary Ann Showers 1992-6-13 2539 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  UCD135418  Ratibida columnifera G. Douglas Barbe 1974-8-20 1939 Lassen north end of the Glenn-Eagle airstrip, southwest corner of Eagle Lake, 0.8 mile north of Eagle Lake Resot. Comment
  JEPS124781 Image available Rhus aromatica C. Meek 1969-7-9 85 Lassen On south facing slope overlooking the Pitt Gorge off Hi #299; 2 mi West of Fall River Mills. Comment
  CHSC13607  Ribes Lynn R Thomas 1969-4-17 93 Lassen 100 yds up slope w of back of Lassen Memorial Hospital, Susanville. Boundary between T29N and T30N. 1310 Comment
  CHSC7763  Ribes aureum Beverley J. Wise 1969-5-4 98 Lassen North shore of Leavitt Lake, south side Hwy 395. 1266 Comment
  CAS-BOT-BC93390  Ribes cereum George W. Gillett 1957-7-26 916 Lassen Lassen Volcanic National Park. Butte Lake. 1844 Comment
  CDA25528  Ribes cereum J. R. Keck Jr. 1977-7-13 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  UC465786  Ribes cereum Franklin P. Nutting 1894-7-5 Lassen Dixie Valley Comment
  SEINET10482925  Ribes cereum Mary Susan Taylor 1974-5-4 Taylor 219 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
  JEPS87426 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1993-6-3 54887 Lassen just s of ford over Pine Creek (Champs Flat Rd (Lassen 105, Forest 32N28Y), 7.0 mi n of tis junction w Lassen 21 (32N02) to Eagle Lake, between Poison Lake and Susanville); Champs Flat Rd, Lassen 105, Forest 32N28Y 1688 Comment
  CAS-BOT-BC169008  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  UC11723  Ribes inerme var. inerme M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC20330  Ribes roezlii Jim Vaughn 1956-8-5 Lassen Upper Hot Springs Creek, Devils Kitchen area, Mt. Lassen National Park 1829 Comment
  JEPS28697  Ribes roezlii George W. Gillett 1957-7-26 917 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  UC747328  Ribes roezlii G. Thomas Robbins 1945-10-6 2150 Lassen near sw summit Crater Lake Mountain; Lassen National Forest 2194 Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 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
  JEPS88202  Rigiopappus leptocladus Vernon H. Oswald and Lowell Ahart 1996-6-17 7795 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  CAS-BOT-BC363008  Rigiopappus leptocladus unspecified 1940-5-31 s.n. Lassen E. of McArthur Comment
  JEPS119648  Rorippa curvisiliqua Lowell Ahart, John Dittes 2012-7-9 18292 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC5023  Rorippa nasturtium-aquaticum L. G. Bennett 1967-6-24 45 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  UC1536933  Rorippa nasturtium-aquaticum Gordon H. True Jr. 1936-6-26 547 Lassen e Eagle Lake (head of Willow Creek); , e of Eagle Lake 1584 Comment
  SEINET10973519  Rorippa obtusa Mary Susan Taylor 1974-1 Taylor 278 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC13947  Rorippa sphaerocarpa M. S. Taylor 1974-7-8 265 Lassen On bank of levee, ca. 1 mi n of Honey Lake, ca. 1 mi s of Standish, Honey Lake Wildlife Refuge. Comment
  RSA702446  Rosa californica L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat. Black Mountains Experimental Forest. 1790 Comment
  SEINET11908427  Rosa californica M. Sacks, Detzer 1977-1 7 Lassen 1mi SE of Milford, 1mi NW of Laufman Ranger Station, T26N, R14E, Sec 1 1341 Comment
  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
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  CDA26287  Rosa woodsii var. ultramontana Gordon Leppig, T. LaBlanca 1998-7-13 874 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC106587  Rosa woodsii var. ultramontana C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  SD61071  Rosa woodsii var. ultramontana Darley F. Howe none given Lassen Hillside of Parsnip Creek, Modoc National Forest 1829 Comment
  UC1128616  Rosa woodsii var. ultramontana A. Simontacchi 1940-7-3 920 Lassen 3.5 mi WSW of Harvey Mountain Lookout 1828 Comment
  JEPS88430  Rotala ramosior Vernon H. Oswald and Lowell Ahart 1996-8-1 8105 Lassen sw of Westwood (Mountain Meadows Reservoir, ne of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  HSC19712  Rubus parviflorus M. S. Baker 1890-1 Lassen Milford Comment
  CAS-BOT-BC421954  Rumex acetosella Margaret Williams; Louella Bass 1972-10-22 EV 5 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CHSC67689  Rumex salicifolius var. lacustris James D. Jokerst 1983-7-25 1891 Lassen Madeline Plains W of Termo. Comment
  CHSC65318  Rumex salicifolius var. salicifolius Vernon H. Oswald; Lowell Ahart 1995-8-14 7188 Lassen Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy.395, N of Susanville. 1645 Comment
  CHSC66396  Rumex salicifolius var. triangulivalvis Vernon H. Oswald; Lowell Ahart 1996-6-17 7789 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Growing between the trail and Susan River at the Hwy.36 bridge. 1402 Comment
  RSA0105590  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA249402  Rumex venosus Thomas W. Nelson, S. Dowty 1971-7-22 19300 Lassen Along Hwy 395, about 4 miles east of Standish Comment
  UCD150405  Rumex venosus William Anderson 1963-6-2 s.n. Lassen Honey Lake Refuge. Comment
  CAS-BOT-BC445671  Sagittaria cuneata L. S. Smith 1918-7-22 1009 Lassen Modoc National Forest. Blue Lake 1874 Comment
  UC533  Sagittaria cuneata J. Burtt Davy Jun 17 1897-Jun 24 1897 3338 Lassen sloughs Susan River (Honey Lake Valley); , sloughs of Susan River 1219 Comment
  UC803885  Sagittaria cuneata G. L. Stebbins Jr. 1949-8-6 4004 Lassen edge Feather Lake (betw. Susanville and McArthur); edge of Feather Lake 1676 Comment
  HSC2897  Sagittaria cuneata R. G. Means 1962-7-4 70 Lassen 19.5 mi. N of Susanville, Hwy. 139 1524 Comment
  CAS-BOT-BC132739  Salix arctica E. B. Copeland 1931-8-16 s.n. Lassen Mount Lassen, on the south shore of Emerald Lake 2370 Comment
  POM362636  Salix bonplandiana Christopher Davidson 1975-6-6 2725 Lassen Ca 3.5 miles on road to Thompson Peak. Branching E of rd 204 ca 7.5 miles SW of Susanville. (Rd 204 follows Gold Run Cr.) 1677 Comment
  CAS-BOT-BC107961  Salix geyeriana John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49220 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  NY430479  Salix laevigata G. Schoolcraft 1994-8-2 2413 Lassen About 1.5 miles southwest of Boot Lake 2011.7 Comment
  JEPS107868  Salix lasiandra var. lasiandra Lowell Ahart, John Dittes 2005-6-2 11925 Lassen Long Valley, along a small ditch, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  POM209558  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 686 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  POM362823  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 684 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  CHSC66405  Salix scouleriana Vernon H. Oswald; Lowell Ahart 1996-6-17 7770 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Ca. 2 mi E of the 7 mile post. 1432 Comment
  JEPS95904  Salsola tragus Lowell Ahart and Vernon H. Oswald 1999-9-13 8205 Lassen on the east side of the dirt road and 1/2 mile south of the sign in station; Honey Lake Wildlife Area; 4 1/2 miles (air) southeast of Standish 1207 Comment
  UC1037333  Salsola tragus Leo Whitney 1934-9-1 1957 Lassen Fredonyer Pass Lassen Nat'l Forest, Fredonyer Pass Comment
  CDA5749  Salvia aethiopis Margaret Bellue Jul 1949 Lassen Susanville. 0 Comment
  CHSC7680  Salvia dorrii Beverly J. Wise 1969-5-16 Lassen 24 mi. east of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  CHSC12422  Sambucus mexicana Anne Linda Brisk 1969-6-26 28 Lassen 7.2 mi SW of ELBS on Road 4.25. 1584 Comment
  JEPS5934  Sambucus racemosa var. microbotrys Frances D. Payne 1929-7-12 80 Lassen Lost Lake Warner Mountains (se extremity of mts.) 2286 Comment
  UC1585882  Sambucus racemosa var. microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 air mi s of Susanville); Diamond Mts. 2255 Comment
  JEPS94454  Sanicula graveolens Vernon Oswald and Lowell Ahart 1997-6-24 8629 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
  SEINET3239873  Santalaceae R. L. Mathiasen 2010-1 1018 Lassen 16 km W of north entrance to Lassen Nat. Park on Rte. 44 1380 Comment
  CDA19211  Sarcobatus vermiculatus D. Kratville 2001-6-21 s.n. Lassen Modoc Plateau; Outside of Susanville. 0 Comment
  UCD101770  Sarcobatus vermiculatus Beecher Crampton 1960-6-19 5730 Lassen southeast of Karlo; along U.S. Hwy 395. Comment
  CHSC6239  Sarcodes sanguinea Sam Webb 1946-6-8 Lassen Roop Mountain, Eagle Lake. 2133 Comment
  HSC17990  Sarcodes sanguinea M. S. Baker 1890-3 Lassen Honey Lake Valley Comment
  JEPS59098  Sarcodes sanguinea Mary G. Clark 1918-5-24 Lassen Westwood, Lassen Co. Comment
  JEPS17632  Saxifraga oregana Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5403 Lassen 0.8 mi s of Lassen-Modoc County Line (below and s of Patterson Ranger Station, along East Creek, southern end of the Warner Mountains); Warner Mountains, East Creek 2011 Comment
  UC1142964  Schoenoplectus acutus var. acutus A. L. Hormay 1941-6-17 23 Lassen meadow lake near Westwood; Lassen National Forest, meadow lake near Westwood 1615 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
  CAS-BOT-BC111215  Scirpus John Thomas Howell 1976-7-19 51967 Lassen Transition forest on Gold Run Creek southwest of Susanville 1386 Comment
  CHSC99154  Scirpus acutus var. occidentalis Lowell Ahart; John Dittes 2008-6-22 15018 Lassen On the east end of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  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
  JEPS95894  Scirpus nevadensis Lowell Ahart 1999-9-13 8228 Lassen on the south side of Mapes Road; about 200 yards east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  POM204113  Scirpus nevadensis J. T. Howell 1934-7-8 12506 Lassen Spalding s, Eagle Lake. Comment
  UC1100818  Scirpus pungens Malcolm A. Nobs, S. Galen Smith 1949-8-20 1485 Lassen 1 mi n Doyle (marshy banks of Long Creek, Honey Lake Valley); Honey Lake Valley Comment
  UC573269  Scirpus pungens H. S. Yates 1936-8-11 6062 Lassen near Red Rock 1341 Comment
  CAS-BOT-BC240003  Scribneria bolanderi Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 759 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  CHSC66422  Scribneria bolanderi Vernon H. Oswald; Lowell Ahart 1996-6-17 7804 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On a flat on the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  CHSC5917  Scrophularia californica subsp. floribunda J. B. Kimsey 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1615 Comment
  SEINET8020068  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1713590  Scutellaria holmgreniorum G. Schoolcraft 1986-6-18 1630 Lassen s side of Smoke Creek (between Shinn and Smoke Creek ranches) 1493 Comment
  CAS-BOT-BC214269  Scutellaria nana John Thomas Howell 1934-6-10 11879 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  RSA128297  Scutellaria nana Peter H. Raven, Otto T. Solbrig 1958-6-17 13270 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  RSA719468  Scutellaria nana L. P. Janeway 2005-4-7 84614 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 534 Comment
  SEINET10499152  Scutellaria nana Mary Merello 1993-6-28 Merello 750 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC506981  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest 1722 Comment
  CAS-BOT-BC46021  Sedum lanceolatum John Thomas Howell; Gordon True; Wayne Dakan 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2346 Comment
  NY758141  Sedum lanceolatum J. T. Howell 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2286 Comment
  CHSC92758  Senecio aronicoides L. P. Janeway 2005-7-4 8471 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  CHSC54176  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. Meadow. 1267 Comment
  UC1586592  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen ca 7 mi ne Bieber (s end of Elkins Ln (100 ft s of Modoc-Lassen county line)); Ash Creek Wildlife Area 1267 Comment
  UC2027206  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen National Forest. Southern McCoy Flat. Spalding Tract quandrangle Comment
  SEINET10799222  Senecio integerrimus Paul Gallian, David B. Dunn 1971-6-2 Gallian 504 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
  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
  CHSC61620  Senecio integerrimus var. exaltatus Arthur C. Barrett 1915-7-1 2 Lassen Laufman Ranger Stat. 1463 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
  CHSC68736  Senecio integerrimus var. exaltatus Vernon H. Oswald; Lowell Ahart 1997-5-27 8508 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. Between the road and a small creek paralleling the road on the north. 1560 Comment
  JEPS85743  Senecio integerrimus var. exaltatus Roy E. Buck and Robert A. Price 1988-6-26 1031 Lassen ca 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  JEPS94603  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1997-5-27 8508 Lassen on Forest Route 38N04 0.3 mi e Hwy. 139 (n of Susanville (between Hwy 139 near Willow Creek Guard Station and Coyote Flat), between the road and a small creek) 1560 Comment
  UC1137289  Senecio integerrimus var. exaltatus K. E. Bradshaw 1939-5-27 239 Lassen Black Mt. Experimental Forest, Plot 39-1 Lassen Forest 1767 Comment
  UC1608996  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1993-6-3 5480 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y) where it diverges from Lassen 21 (32N02) to Eagle Lake (s side of valley, between Poison Lake and Susanville); Pine Creek Valley 1725 Comment
  RSA0124944  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14 .772 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  UC1562885  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  HSC100806  Sidalcea glaucescens Lowell Ahart, John Dittes 2010-7-31 17016 Lassen S side of road, ~50 yd. E of culvert, where road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1516 Comment
  UC585099  Sidalcea glaucescens E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1778 Lassen 4 mi s Ravendale (slope of creek at n end of Secret Valley); n end Secret Valley, s of Ravendale 1371 Comment
  CAS-BOT-BC205766  Sidalcea oregana L. S. Smith 1918-8-12 1031 Lassen Modoc National Forest. Camp One Comment
  CAS-BOT-BC205777  Sidalcea oregana Ralph K. Gierisch 1968-7-11 3354 Lassen Lassen National Forest, Harvey Valley 1706 Comment
  UC1037274  Sidalcea oregana Leo Whitney 1934-7-10 1760 Lassen 14 mi w of Eagle Lake (near Harvey Valley Spring, Lassen National Forest, Harvey Valley); Lassen National Forest, Harvey Valley 1737 Comment
  CAS-BOT-BC205781  Sidalcea oregana Elmer I. Applegate 1929-6-24 5877 Lassen Big Valley, just southwest of Bieber, northwest Lassen County Comment
  UC871518  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen 1 mi w Bieber (overflow of the Pitt River); Pitt River, w of Bieber Comment
  HSC69610  Sidalcea oregana subsp. spicata Gary Schoolcraft 1980-7-14 Lassen In Ash Valley, NW of the road. 1537 Comment
  UC1137745  Sidalcea oregana subsp. spicata George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  UC408410  Sidalcea oregana subsp. spicata Milo S. Baker Lassen Dixey Valley Comment
  RSA339988  Sidalcea oregana var. maxima Noel Holmgren, Patricia K. Holmgren 1980-7-3 9479 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
  CHSC57275  Silene bernardina Mary Meyer 1980-7-22 Lassen Downhill 100 yds west from sharp bend in road on top going to Lookout Tower. 2316 Comment
  RSA438833  Silene bernardina Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  UC1125817  Silene bernardina A. Simontacchi 1940-7-3 928 Lassen 2.3 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1844 Comment
  JEPS50913  Silene douglasii Brown and Wieslander 1922-7-23 33 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  OBI75863  Silene douglasii Anthony Baniaga 2011-9-1 510 Lassen Lassen Natl Forest. W of Bailey Crk, along F.S. 10 Red Cinder quad. T29N R7E sec 3 SE of NE 1896 Comment
  CAS-BOT-BC389264  Silene lemmonii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  HSC103769  Silene menziesii M. R. Mesler, Carol Wilson 2013-7-16 1626 Lassen Forest service road 31N25 on north edge of impoundment on Pine Creek 1930 Comment
  SJSU5887  Silene menziesii H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  RSA722689  Silene menziesii subsp. menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  RSA123275  Silene nuda E. Sawyer 1935-7-8 274 Lassen 7.75 miles ENE of Loyalton. 1677 Comment
  RSA666396  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UC1137897  Silene nuda E. Sawyer 1935-7-8 274 Lassen 7 3/4 mi ene Loyalton; Sierraville Quad., ene of Loyalton Comment
  UC717968  Silene nuda David D. Keck 1944-7-8 5446 Lassen 2 mi e Westwood (in grassy meadow leading to Mountain Meadows Reservoir); Sierra Nevada, mdw leading to Mountain Meadows Reservoir 1524 Comment
  CAS-BOT-BC389549  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  UC465657  Silene occidentalis subsp. occidentalis Franklin P. Nutting Lassen Silver Lake Comment
  HSC4227  Silene verecunda Fred J. Kindel 1955-7-9 Lassen Susan River Comment
  CHSC91206  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
  RSA0028051  Sisymbrium altissimum John F. Emmel 1996-7-14 1425 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  RSA152595  Sisymbrium altissimum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16333 Lassen 13.5 miles E of Susanville. Comment
  CHSC5932  Sisyrinchium bellum M. West 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CHSC91178  Sisyrinchium bellum Lowell Ahart; John Dittes 2005-6-2 11948 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  UC21381  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  UCD128140  Sium suave J. M. Tucker 1950-7-25 1973 Lassen 0.5 mile southwest of Bieber. Comment
  CAS-BOT-BC34688  Solanum lycopersicum J. H. Thomas 1969-9-7 15468 Lassen Susanville. Near center of town in disturbed fields, near a drivein. Comment
  CAS-BOT-BC365752  Solidago spectabilis Lassen 1927 G. S. Crew 1927-7-15 82 Lassen Lassen National Forest. Feather Lake 1737 Comment
  CAS-BOT-BC364906  Solidago velutina subsp. californica Clare B. Hardham 1969-8-28 17437 Lassen Slope west of Janesville Comment
  UCD136093  Solidago velutina subsp. californica G. Schoolcraft 1994-8-29 2426 Lassen about 1 mile west of Susanville up Piute Creek. 1341 Comment
  JEPS121251  Sonchus asper Lowell Ahart 2013-7-22 18846 Lassen W margin of duck field, about 50 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC113057  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2013-7-22 18846 Lassen West margin of a duck field, about 50 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC438841  Sparganium natans Andrew Townesmith; Karen M. Meyer 2007-7-22 844 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. 1981 Comment
  NY482319  Spergularia diandra G. Schoolcraft 1998-6-8 2734 Lassen N. base of Ft. Sage Mtns. 1249.7 Comment
  CAS-BOT-BC390560  Spergularia rubra John Thomas Howell; Gordon H. True 1973-8-1 50245 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  CHSC93240  Sphaeromeria potentilloides var. potentilloides John Dittes; Scott Chamberlain 2004-6-28 1013 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-miles east of Plumas County line; meadow. 1445 Comment
  JEPS103181  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  CAS-BOT-BC374759  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 1998-6-29 2319 Lassen Ash Valley along main road crossing Ah [Ash] Crk. 1554 Comment
  JEPS128408  Spiraea douglasii Catherine Bauer with Ellen Bauer Benson 2017-8-16 16 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  JEPS63054  Stachys ajugoides var. rigida Brown and Wieslander ca. 1914 57 Lassen near Eagle Lake; Martin Sprs. 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
  UC773921  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spring Experiment Range Lassen Forest 1795 Comment
  CAS-BOT-BC60991  Stanleya viridiflora Louella Bass 1982-6-20 s.n. Lassen 0.5 mile west of Karlo. Comment
  JEPS95038  Stellaria crispa Vernon Oswald and Lowell Ahart 1997-6-24 8610 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain along Forest Road 29N43, 5.4 mi e of Gold Run road (29N10)); Diamond Mountain, Forest Road 29N43 1889 Comment
  UCD99328  Stellaria longipes subsp. longipes Ratliff 1966-7-8 1 Lassen Harvey Valley Allot. - Plot 49. 1706 Comment
  CDA24150  Stellaria longipes var. longipes Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-29 537 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  JEPS94459  Stenotus acaulis Vernon Oswald and Lowell Ahart 1997-6-24 8630 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
  CAS-BOT-BC375066  Stephanomeria Gordon H. True 1973-8-22 7657 Lassen North shore of Honey Lake ca. 5 miles east of Janesville & just west of Hartson Reservoir 1219 Comment
  CDA8837  Stephanomeria exigua S. E. Piper 1943-7-3 Lassen Sierra Ordnance Depot, Herlong. 0 Comment
  JEPS17401  Stephanomeria exigua subsp. exigua Rimo Bacigalupi and G. T. Robbins 1955-7-21 5425 Lassen In drainage of Rush Creek, S of the Smoke Creek Ranch Road, 1.3 mi E of the Nevada State line and 17.5 mi E of U.S. Highway 395. 1341 Comment
  POM33607  Stephanomeria spinosa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SEINET10474966  Stephanomeria spinosa Mary Susan Taylor 1982-8-19 Taylor 5020 Lassen T22N R17E sw/nw sec 5. Beckwourth Pass quad. Along dirt rd (old RR tracks), s of and paralleling Hwy 70, just se of Beckwourth Pass. Sagebrush Scrub; 5200 ft. Dry sandy soil. 1585 Comment
  CHSC29899  Stephanomeria tenuifolia Robin L. Ondricek 1978-8-2 110 Lassen On top of ridge se of Eagle Lake Field Station. 1609 Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  HSC79992  Stipa comata William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UCR119113  Stipa elmeri Beecher Crampton 1954-7-5 2064 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 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
  JEPS102871  Streptanthella longirostris Vernon H. Oswald 2001-6-2 10039 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  SEINET10940334  Streptanthus cordatus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2606 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon juniper pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  HSC22877  Stuckenia pectinata John Pratt 1970-6-14 13 Lassen Comment
  UCD138352  Stuckenia pectinata Verne Grant; Irving Schneider 1947-8-1 8244 Lassen East end of Tule Lake. Comment
  CHSC64784  Suaeda moquinii Vernon H. Oswald 1995-6-7 6835 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. Flat near the railroad. 1231 Comment
  NY541219  Suaeda nigra G. Schoolcraft 1998-9-14 2807 Lassen Flat near Amedee Hot Springs 1219.2 Comment
  SEINET4172103  Suaeda occidentalis T. L. Breene, H. Sampson 1937-8-28 59 Lassen 5 mi. S of Wendel Comment
  CHSC5251  Swertia albicaulis var. albicaulis 1944-6-23 Lassen Eagle Lake. 1615 Comment
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  JEPS103195  Symphyotrichum bracteolatum G. Schoolcraft 1996-9-9 2583 Lassen Lower end of Willow Creek below petroglyphs 1310 Comment
  CHSC5199  Symphyotrichum campestre 1944-7-5 Lassen Eagle Lake. Harvey Valley. 1695 Comment
  CHSC52664  Symphyotrichum campestre James D. Jokerst 1983-7-24 1885 Lassen Near Madeline Plains. 1614 Comment
  UC1561922  Symphyotrichum campestre Barbara Ertter 1987-7-25 7311 a Lassen 22 airmiles nw of Susanville; Pine Creek Valley 1737 Comment
  UCD107503  Symphyotrichum foliaceum Tim Kuhn 2006-7-18 49 Lassen Eagle Lake Ranger District. Comment
  OBI75865  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen Natl Forest. Caribou Wilderness; N of Long Lake. Red Cinder quad. T30 N R7E sec 9NE of SW 2099 Comment
  UC1745661  Symphyotrichum frondosum Annetta M. Carter 1945-9-30 1724 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  JEPS40821  Symphyotrichum spathulatum Brown and Wieslander 1922-7-30 66 Lassen Martin Sprs, Eagle Lake Eagle Lake Comment
  CAS-BOT-BC221916  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 s.n. Lassen Ca 4 mi SE/Susanville Comment
  CHSC4928  Taraxia tanacetifolia L. G. Bennett 1967-6-28 55 Lassen North end of Murrers meadow, near Eagle Lake. 1493 Comment
  CHSC59758  Taraxia tanacetifolia Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In meadows by creek in Balls Canyon. 1219 Comment
  SBBG20782  Taraxia tanacetifolia A. I. Richardson 1961-5-31 11 Lassen near Seaid Valley Reservoir Comment
  UC2027202  Taraxia tanacetifolia Anthony Baniaga 2011-6-10 319 Lassen Along highway 395 ca. 6.6 mi S of Karlo Rd. quadrangle. Comment
  UC1537604  Taraxia tanacetifolia Gordon H. True Jr. 1936-6-26 543 Lassen Honey Lake-Willow Creek Valley Road 1493 Comment
  CAS-BOT-BC329046  Tetradymia canescens Elmer I. Applegate 1897-6-4 855 Lassen North end of Madeline Plains, northern Lassen County Comment
  JEPS38112  Tetradymia canescens W. L. Jepson 1918-8-2 7789 Lassen Long Valley 1371 Comment
  SEINET3391043 Image available Tetradymia canescens Lewis S. Rose 1934-7-23 34409 Lassen Reno Junction. 1372 Comment
  UC1562341  Tetradymia canescens Vernon Oswald and Lowell Ahart 1990-7-25 4398 Lassen 2.2 mi w Hwy 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  UC501445  Tetradymia canescens Frank W. Peirson 1932-7-20 10354 Lassen 20 mi se Susanville Comment
  CAS-BOT-BC340064  Tetradymia glabrata M. Bourell 1997-5-31 5880 Lassen Wendel Road 10.9 miles southeast of Highway 395