Search Results — 2000 specimen records retrieved (1609 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC23488  Abies concolor Wayne O. Baum 1971-7-16 71 -73 Lassen E. slope of Gallatin Peak. 2072 Comment
  CHSC84856  Abies concolor L. P. Janeway; B. Castro 2003-10-5 8002 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  RSA603232  Acer glabrum var. torreyi C. Epling, Wm. Robinson 1935-7-19 s.n. Lassen Sulphur Spring, Lassen Park Comment
Read comments
May 1 2013
  CHSC4769  Achillea millefolium R. Carter 1967-7-16 619 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side on rd. Comment
  UC506903  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-14 F 275 Lassen Patterson Flat; Lassen National Forest 1737 Comment
  UC1024644  Achnatherum Leo Whitney 1933-7-1 2214 Lassen Slate Creek, ca. 8 mi nw Eagle Lake; Lassen National Forest Comment
  UCD51450  Achnatherum X bloomeri Howard Gebel 1966-6-14 s.n. Lassen Belfast tableland. 1341 Comment
  CAS-BOT-BC260401  Achnatherum hymenoides John Thomas Howell 1974-7-8 50464 Lassen Susanville 1295 Comment
  UC60714  Achnatherum hymenoides J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  UCD50337  Achnatherum hymenoides Grady L. Webster 1989-5-13 7717 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC210661  Achnatherum lemmonii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50644 Lassen South and southeast of Diamond Mt. 2286 Comment
  UCD50516  Achnatherum lemmonii Beecher Crampton 1954-7-5 2049 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD50603  Achnatherum lemmonii John Thomas Howell 1976-7-19 51980 Lassen Transition Zone forest on Gold Run Creek southwest of Susanville. Lassen County. 1386 Comment
  CHSC114405  Achnatherum nevadense Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A. 2133 Comment
  CHSC64900  Achnatherum nevadense Vernon H. Oswald 1995-6-19 6879 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  JEPS97411  Achnatherum nevadense Vernon H. Oswald and L. Ahart 1995-6-19 6879 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. Tufted perennial 1383 Comment
  CAS-BOT-BC216801  Achnatherum occidentale David D. Keck 1944-7-8 5451 Lassen 1.5 miles W of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC216849  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-7-31 50059 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UCD54017  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-8-1 50069 Lassen Canadian Zone forest, east slope of Diamond Range south of Susanville, Lassen County. 2362 Comment
  UC1024805  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-23 3288 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD51042  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3296 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  RSA582082  Achnatherum occidentale subsp. occidentale J. T. Howell 1934-7-6 12431 Lassen Hall's Flat. Comment
  CAS-BOT-BC218613  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True 1973-7-31 50033 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  UCD32666  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2066 Lassen Lassen County, 5.5 miles west of Susanville, along highway 36. 1447 Comment
  UCD51211  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  UCD51224  Achnatherum occidentale subsp. pubescens A. A. Beetle 1944-8-17 3040 Lassen 8 miles northeast of Susanville. Comment
  UC1024812  Achnatherum thurberianum Leo Whitney 1935-6-19 3267 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1153869  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen mountain flat 4.5 mi w on State Hwy. 36 Susanville 1432 Comment
  UC1153870  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen US Hwy. 395 7 mi n Madeleine Comment
  UC1924570  Achnatherum thurberianum Debra Valov 2006-5-30 2006042 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1291 Comment
  UCD51441  Achnatherum thurberianum L. Whitney 1935-6-19 3258 Lassen Ashurst Mountain, 13 miles west of upper end of Eagle Lake, Lassen National Forest. 1584 Comment
  UC769950  Achnatherum webberi R. F. Hoover 1940-9-29 4647 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UCD32671  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  UCD51303  Achnatherum webberi R. Tofsrud 1947-7-1 232 Lassen Near Ravendale. Comment
  CAS-BOT-BC412871  Aconogonon davisiae Brighton C. Cain 1925-8-25 127 Lassen Horse trail from summit of Mt. Lassen to Drakesbad, Mt. Lassen Volcanic National Park 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
  CHSC60832  Agastache parvifolia Vernon H. Oswald; Lowell Ahart 1993-6-28 5619 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  SEINET11261375  Agastache parvifolia Robert L. Johnson, Mikel R. Stevens 2015-7-10 3929 Lassen 5.6 rd miles west of jct with Hwy 395 beginning on Dawn Dr, then continuing on road to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1910 Comment
  CHSC23487  Ageratina occidentalis Wayne O. Baum 1971-7-22 71 -59 Lassen E slope of Gallatin Peak. 2072 Comment
  JEPS18703  Ageratina occidentalis Brown and Wieslander 1922-7-23 62 Lassen Martin Springs Eagle Lake, Martin Springs Comment
  CAS-BOT-BC30234  Ageratina occidentalis Hans Leschke 1961-8-18 1832 Lassen Summit area of Diamond Peak 2423 Comment
  SEINET10669171  Agoseris Jeffrey Huber 1971-6-2 Huber 123 Lassen Approx. 30 mi. N of Susanville, on CA Hwy. 139, in basalt; Pinus-Artemisia-Juniper Assoc. 1646 Comment
  UC29341  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  UC29344  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  UC1143046  Agoseris parviflora L. R. Short and J. Warren 1936-6-5 S- 372 Lassen Burgess Spring Experimental Range Lassen National Forest 1798 Comment
  UC1776674 Image available Agoseris parviflora G. Schoolcraft 1994-7-7 2365 Lassen About 1 miles west of Boot Lake 219 Comment
  CAS-BOT-BC13413  Agoseris retrorsa Louella Bass 1973-5-29 82 Lassen Elysian Valley 1325 Comment
  CHSC23552  Agoseris retrorsa W. O. Baum 1971-6-28 19 Lassen S slope of Gallatin Peak. 2042 Comment
  UC1136778  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  UCR119164  Agropyron saxicola Beecher Crampton 1954-7-5 2062 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  SEINET7297772 Image available Agrositanion John Thomas Howell 1976-1 52002 Lassen Open juniper-Jeffrey pine woodland on basaltic rock, about 5 miles west of Fredonyer Pass near confluecne of Susan River and Willard Creek. 1433 Comment
  SACT000106  Agrostis exarata Malcolm Nobs, S. Smith 1949-7-21 Lassen shallow marshy stream from springs, 4 miles north of madeline Comment
  UC1024693  Agrostis exarata Leo Whitney 1933-8-2 2152 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CAS-BOT-BC139679  Agrostis gigantea John Thomas Howell 1976-7-19 51975 Lassen Sierra Nevada. On Gold Run Creek southwest of Susanville. 1386 Comment
  CAS-BOT-BC139295  Agrostis idahoensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49523 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CHSC58860  Agrostis pallens Vernon H. Oswald; Lowell Ahart 1992-7-16 5107 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  JEPS71138  Agrostis pallens Brown and Wieslander 73 Lassen Comment
  UC53496  Agrostis pallens M. S. Baker and Frank Nutting 1894-7-21 Lassen Eagle Lake 1524 Comment
  UCD53171  Agrostis pallens L. D. Whitney 1935-6-27 s.n. Lassen near Fruit Grower Supply Co. Comment
  SEINET4341134  Agrostis pallens G. Schoolcraft 1994-7-6 2349 Lassen About 1.5 miles NE of Red Rock Lake 2042 Comment
  CAS-BOT-BC138801  Agrostis scabra John Thomas Howell 1959-9-23 34882 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  CHSC29905  Agrostis scabra Robin L. Ondricek 1978-8-4 114 Lassen Near edge of Eagle Lake along grassy shoreline. 1554 Comment
  RSA87452  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  UC60211  Agrostis stolonifera J. Burtt Davy Jun 17 1897-Jun 24 1897 3307 Lassen Tule Confederacy Honey Lake Valley Comment
  JEPS28272  Agrostis variabilis George W. Gillett 1957-7-28 927 Lassen above junction Snag Lake trail (100 yds above trail junction, trail to Widow Lake, at upper end of Butte Lake); Lassen Volcanic National Park, Butte Lake 1859 Comment
  SEINET12558767 Image available Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  SEINET14163171  Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  JEPS121269  Alisma lanceolatum Lowell Ahart 2013-7-22 18841 Lassen W margin of duck field, about 80 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS119644  Alisma triviale Lowell Ahart, John Dittes 2012-7-9 18294 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 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
  RSA32793  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen On an open slope east of Fredonyer Pass. 1646 Comment
  UC1567412  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen along Skedaddle Ranch Rd. near stateline 1584 Comment
  CAS-BOT-BC459570  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen Along Skedaddle Ranch Road near stateline, Susanville 1584 Comment
  UC1299748  Allium acuminatum Freed W. Hoffman 1946-6-9 739 Lassen on Highway 395 about 10 mi s Alturas; Dry Creek Comment
  UC3062  Allium amplectens M. S. Baker and F. Nutting 1894-7-1 Lassen Dixey Mts. Comment
  CHSC7663  Allium anceps Beverley J. Wise 1969-5-4 140 Lassen 23.4 mi. east of Susanville on Hwy 395. 1615 Comment
  SEINET10532611  Allium anceps Paul Gallian, David B. Dunn 1971-6-2 Gallian 516 Lassen 6 miles n of hallelujah jct. On u.s. Hwy. 395, In artemisia tridentata, pinyon Pine along high ridge and in sandy wash 1402 Comment
  SEINET3883828  Allium atrorubens Arnold Tiehm, Jan Nachlinger; Margaret Williams 1988-6-2 11702 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway.; 0 1387 Comment
  CHSC64812  Allium atrorubens var. atrorubens Vernon H. Oswald 1995-6-7 6836 Lassen Modoc Plateau, on N side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi E of Wendel, NE of Susanville. 1237 Comment
  UCD55152  Allium bisceptrum Ellen Dean 2006-5-15 3040 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1245 Comment
  UC1133790  Allium campanulatum A. Simontacchi 1940-7-1 935 Lassen 2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1133850  Allium lemmonii A. Simontacchi 1940-6-4 805 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle 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
  HSC47288  Allium lemmonii Dale McNeal 1978-5-30 2129 Lassen Beside Hwy. 395, 1.9 mi. S of Ravendale Comment
  CHSC7662  Allium parvum Beverley J. Wise 1969-4-10 139 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  CAS-BOT-BC474048  Allium parvum Ethel S. Willits 1940-4-28 199 Lassen South of Surprise Valley, Modoc County 1371 Comment
  JEPS47583  Allium platycaule Hilda W. Grinnell 1934-6-1 Lassen 8 mi sw Susanville 1950 Comment
  SEINET3878902  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 mi W of Madeline on rd. from Adin.; 0 1676 Comment
  RSA367108  Allium platycaule Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
Read comments
Nov 17 2011
  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
  CHSC77221  Allophyllum gilioides subsp. violaceum G. Schoolcraft 1997-6-24 2594 Lassen 4 mi. W of Doyle on S. side of Doyle Grade Rd. 1767 Comment
  JEPS94536  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1997-6-24 8604 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1655 Comment
  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
  CHSC65366  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1995-8-14 7194 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittant stream, N of Susanville. 1676 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
  SEINET10510844  Alopecurus aequalis Alan A. Beetle 1941-6-28 Beetle 2795 Lassen 10 miles west of Chester, rte 36, open meadow near small stream. Assoc. Scirpus congdoni, Deschampsia, Ranunculus. Comment
  CAS-BOT-BC138011  Alopecurus geniculatus John Thomas Howell 1934-7-7 12464 Lassen Near Feather Lake. Comment
  RSA125344  Alopecurus geniculatus P. H. Raven, Otto T. Solbrig 1958-6-17 13299 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. 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
  CHSC63387  Alyssum desertorum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6310 Lassen Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. On the edge of the road. 1767 Comment
  UC1951079  Alyssum desertorum Debra Valov 2009-4-24 2009012 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC29941  Amaranthus blitoides Robin L. Ondricek 1978-8-7 117 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  UCR67435  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC142908  Amelanchier A. A. Heller 1938-6-4 15144 Lassen On the bank of a small stream in the pine forest a mile east of Fredonyer Pass on Highway #36. 1706 Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC1536  Amelanchier pallida V. Holt 1935-5-31 Lassen Near Susanville. 1584 Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 Comment
  SD43502  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  CHSC5244  Amphiscirpus nevadensis 1946-6-25 Lassen Eagle Lake. 1554 Comment
  SEINET9183301  Amphiscirpus nevadensis R. R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CHSC7718  Amsinckia menziesii var. menziesii Beverly J. Wise 1969-4-28 1 Lassen 2.4 mi. north of Susanville on Hwy 139 at the junction of Rnd Valley Rd. Comment
  JEPS107316  Amsinckia menziesii var. menziesii Lowell Ahart, John Dittes 2005-6-1 11899 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC1924218  Amsinckia menziesii var. menziesii Debra Valov 2004-6-9 2004258 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  CHSC71073  Amsinckia tessellata var. tessellata Vernon H. Oswald; Lowell Ahart 1998-5-22 9091 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  RSA622142  Amsinckia tessellata var. tessellata B. J. Cox, D. B. Dunn 1971-6-2 2574 Lassen 3 mi. S. of Hallelujah Jct., on U.S. Hwy. 395, Jct. of U.S. 395 & Calif. 70. Comment
  SEINET6734941 Image available Anaphalis margaritacea C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC64748  Ancistrocarphus filagineus Vernon H. Oswald 1995-5-31 6809 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi E of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CAS-BOT-BC63953  Antennaria argentea Clare B. Hardham 1969-8-28 17453 C. Lassen West of Janesville Comment
  CHSC5194  Antennaria argentea A. Santos 1946-6-14 Lassen Spalding's, Eagle Lake. 1558 Comment
  CHSC68729  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1997-5-27 8505 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  CHSC7640  Antennaria dimorpha Beverley J. Wise 1969-4-13 11 Lassen 5.6 mi east of junction of Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1463 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
  HSC68156  Antennaria dimorpha J. P. Smith, J. O. Sawyer 1971-5-23 4657 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  CAS-BOT-BC69143  Antennaria geyeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49517 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC60712  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-14 5528 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  CHSC60808  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5584 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  POM39124  Antennaria geyeri Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC88216  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
  JEPS22839  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen 4 mi e Westwood Comment
  SBBG63409  Antennaria luzuloides S. W. Hutchinson, M. N. Ackley -Jun-1925 212 Lassen Eagle Lake region 1554 Comment
  CAS-BOT-BC77283  Antennaria microphylla Clare B. Hardham 1969-8-28 17453 B Lassen West of Janesville Comment
  UCD149585  Antennaria rosea G. Ledyard Stebbins 1982-9-16 C 247 Lassen Vicinity of Eagle Lake. Comment
  JEPS120872  Apera interrupta Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18733 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC66370  Apocynum androsaemifolium Vernon H. Oswald; Lowell Ahart 1996-6-17 7777 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1432 Comment
  UC1123464  Apocynum androsaemifolium H. P. Hagge 1929-9-12 28 Lassen Logan Mt. Eagle Lake Quad., Logan Mt. Comment
  CHSC93250  Apocynum cannabinum John Dittes; Scott Chamberlain 2004-6-28 1021 Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow. 1496 Comment
  SEINET7881828 Image available Apocynum pumilum Helen K. Sharsmith 1955-1 4516 Lassen Ponderosa Pine-Black Oak forest adjacent to Highway 89 north of Hat Creek Ranger Station, Lassen National Forest. Altitude ca. 3800 feet. 1158 Comment
  CHSC12479  Aquilegia formosa var. truncata Carol Weld 1969-6-25 25 Lassen Murrer's Meadow. 1524 Comment
  SEINET10539684  Arabis Paul Gallian, David B. Dunn 1971-6-2 Gallian 496 Lassen Approx 22 mi s of adin on state hwy 139; in basalt. Assoc: juniper, artemisia. 1646 Comment
  NY112494  Arabis holboellii var. pinetorum R. C. Rollins 1981-5-30 81164 Lassen Gold Run Road, 9 miles S of Susanville Comment
  POM316895  Arabis rectissima Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  JEPS28468  Arabis rectissima var. rectissima George W. Gillett 1957-9-4 1123 Lassen about 1/8 mi below Widow Lake (Widow Lake Trail); Lassen Volcanic National Park 2011 Comment
  RSA0001920  Arabis sabulosa var. frigida Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 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
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  NY119619  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81179 Lassen About three miles north of Eagle Lake Comment
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  UC1584019  Arceuthobium campylopodum G. Schoolcraft 1990-8-1 2120 Lassen betw Cleghorn and Heath Reservoirs 1828 Comment
  CDA6787  Arctium minus T. C. Fuller 1959-7-7 4725 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  CAS-BOT-BC45903  Arctostaphylos nevadensis Mrs. E. C. Sutliffe 1927-6-1 s.n Lassen Drakesbad, Lassen Volcanic Park Comment
  HSC7705  Arctostaphylos patula L. H. Myers 1963-4-14 39 Lassen Janesville grade road, ca. 3 mi. S of Janesville Comment
  UC549429  Arctostaphylos patula F. Farris 1934-12-30 Lassen Diamond Mt. 1524 Comment
  UC773875  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
  UC82992  Arctostaphylos patula T. S. Brandegee 1892-7-26 Lassen Milford Comment
  HSC7750  Arctostaphylos viscida R. J. Vernimen 1963-5-4 28 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
Read comments
Apr 29 2013
  RSA59890  Arenaria congesta var. simulans E. K. Balls 1950-5-19 14775 Lassen 21 miles W of Madeline on road to Adin. 1372 Comment
  UC1523778  Arenaria serpyllifolia subsp. serpyllifolia Gary Schoolcraft 1981-6-9 441 Lassen s Pittville Comment
  CAS-BOT-BC401655  Argemone munita subsp. munita John Thomas Howell 1955-7-19 30816 Lassen East side of Beckwourth Pass 1493 Comment
  UC1776710  Arnica chamissonis G. Schoolcraft 1997-8-1 2385 Lassen About 2 miles W of Boot Lake 2255 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
  POM203853  Arnica chamissonis subsp. foliosa J. T. Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  CHSC11767  Arnica cordifolia Wayne O. Baum 1971-6-21 71 -5 Lassen E. slope of Gallatin Peak. 1920 Comment
  JEPS94480  Arnica cordifolia Vernon H. Oswald and Lowell Ahart 1997-5-27 8527 Lassen 5.4 mi ne of Highway 139 0.4 mi e of its junction with the road to Shingle Mill Spring (n of Susanville on Forest Route 38N04); Forest Route 38N04 1798 Comment
  POM253188  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mile east of Fredonyer Pass on hwy 36 1707 Comment
  UC1137700  Arnica cordifolia A. Simontacchi 1940-5-21 764 Lassen 4.6 mi sse of Blacks Mtn.; Hall Flat Quad. 1737 Comment
  CHSC27166  Arnica dealbata J. D. Prouty 1978-7-27 31 Lassen 2.4 mi w of jct with road A-1 on n side of Merrill Flat Rd, s of Eagle Lake. 1740 Comment
  UC2027205  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen National Forest. About 1/2 mile WNW of Griffith Hill, ca 30 ft N of 30N21. Swain Mountain quadrangle Comment
  UC36753  Arnica dealbata M. S. Baker and Frank Nutting 1894-7-28 Lassen mts s Eagle Lake Comment
  CHSC66714  Arnica discoidea Vernon H. Oswald; Lowell Ahart 1996-8-1 8128 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  CAS-BOT-BC82713  Arnica longifolia Clarence R. Quick 1962-6-18 62 -16 Lassen Road 21, Blacks Mountain E.F. Hdqrts., east of Halls Flat, north of Poison Lake Comment
  SD113192  Arnica mollis Darley F. Howe 1964-8-2 3920 Lassen East Creek, Warner Mountains, Modoc National Forest 2010 Comment
  RSA702450  Arnica sororia L. P. Janeway 2004-6-26 8166 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  SEINET3358258 Image available Artemisia arbuscula A. A. Beetle 1957-8-16 12763 Lassen Between Susanville and Johnstonville. Comment
  UCD129188  Artemisia arbuscula F. C. Raney 1966-6-25 s. n. Lassen Harvey Valley, Lassen National Forest. Comment
  CHSC118794  Artemisia arbuscula subsp. arbuscula L. P. Janeway; B. Castro 2015-6-5 11766 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC118795  Artemisia arbuscula subsp. arbuscula L. P. Janeway 2015-8-9 11823 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01- the road to Patterson Camprgound); 0.7 air-km west of Long Valley, 5.3 air-km northeast of Blue Lake. 2179 Comment
  CHSC72214  Artemisia arbuscula subsp. arbuscula Vernon H. Oswald 1998-9-14 9621 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  RSA78915  Artemisia arbuscula subsp. arbuscula E. K. Balls, Percy C. Everett 1952-10-10 18142 Lassen 8 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UCD129263  Artemisia biennis Malcolm A. Nobs; Galen Smith 1949-8-20 1482 Lassen Long Creek, 1 mile north of Doyle, Honey Lake Valley. Comment
  HSC68838  Artemisia cana subsp. bolanderi Gary Schoolcraft 1979-9-27 195 Lassen Painter Flat 1720 Comment
  CAS-BOT-BC90332  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen Along BJ Trail west of Susanville at Hobo Camp Comment
  UCD159571  Artemisia douglasiana D. S. Park 2011-6-27 308 Lassen East of Westwood. Growing near Willard Creek. 1471 Comment
  CAS-BOT-BC90330  Artemisia douglasiana Clare B. Hardham 1971-8-22 18374 Lassen North slopes, Diamond Mountain 2133 Comment
  JEPS37007  Artemisia dracunculus W. L. Jepson 1918-8-3 7799 Lassen Honey Lake Valley 1219 Comment
  CAS-BOT-BC93742  Artemisia ludoviciana subsp. incompta Louella Bass 1974-7-1 s.n. Lassen Sierra Nevada - Elysian Valley 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
  RSA748314  Artemisia ludoviciana subsp. ludoviciana K. M. Meyer, A. Townesmith 2007-7-19 134 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  UC1537358  Artemisia ludoviciana subsp. ludoviciana Gordon H. True 1937-7-10 783 Lassen Bull Flat Refuge 1Q, Bull Flat 1524 Comment
  UC1776685  Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains E of Ravendale, CA 1627 Comment
  CAS-BOT-BC90778  Artemisia ludoviciana subsp. ludoviciana Louella Bass 1980-5-1 s.n. Lassen Standish, Honey Lake Valley Comment
  CAS-BOT-BC90830  Artemisia nova Arnold Tiehm; Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 road miles N of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  SEINET251695  Artemisia nova Arnold Tiehm, Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 Rd miles N of Karlo Rd. on highway 395 from Litchfield to Alturas, Just E of the highway. 1402 Comment
  SEINET7153386 Image available Artemisia nova A. Tiehm, G. Schoolcraft 2003-1 14368 Lassen 2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  SEINET7153395 Image available Artemisia nova A. A. Beetle 1957-8-16 12580 Lassen 8 miles north of Litchfield Comment
  CAS-BOT-BC97200  Artemisia spinescens Elmer I. Applegate 1934-5-4 8934 Lassen 20 miles south of Ravendale, Secret Valley Comment
  CHSC13797  Artemisia tridentata Cathy Crittenden 1970-7-8 28 Lassen Approx. 100 yds north of E. L. B. S. 1524 Comment
  UC29711  Artemisia tridentata J. Burtt Davy Jun 17 1897-Jun 24 1897 3343 Lassen Honey Lake Valley Comment
  SEINET3397751  Artemisia tridentata subsp. tridentata Unknown 1994-1 s.n. Lassen 15 mi. N. of Litchfield Comment
  CAS-BOT-BC99280  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1988-8-24 1855 Lassen Ash Valley RNA/ACEC 16 mi. east of Adin 1554 Comment
  CAS-BOT-BC99281  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  JEPS124637 Image available Artemisia vulgaris Dixie Funnell 1965-7-13 137 Lassen Growing under bridge about 4 feet from the water. Highway 299, under bridge 705 for pit overflow. Comment
  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
  RSA516358  Aster campestris Barbara Ertter 1987-7-25 7311 a Lassen About 22 air miles NW of Susanville, Pine Creek Valley at jct. of Bridge Creek Springs Rd. 1738 Comment
  RSA503251  Aster integrifolius Bruce Bartholomew, B. Anderson 1988-7-22 4502 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  POM45145  Astragalus accidens var. hendersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC177310  Astragalus agrestis James Jokerst 1983-7-24 1875 Lassen Near Madeline Plains 1614 Comment
  CAS-BOT-BC177433  Astragalus andersonii John Thomas Howell 1934-6-10 11875 Lassen Janesville Comment
  CAS-BOT-BC177439  Astragalus andersonii Margaret Williams 1974-7-27 74 -L-55 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CDA26597  Astragalus andersonii L. Ahart, J. Dittes 2005-6-1 11917 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. Comment
  CHSC106586  Astragalus andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  POM45143  Astragalus andersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  SEINET10544285 Image available Astragalus anxius R. J. Meinke 1991-7-16 Meinke 6108 Lassen Ash Valley, ca. 25 km W of Madeline, along Ash Valley Rd.; on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sec. 5. In loose, gravelly ash thinly overlying volcanic bedrock. 1550 Comment
  POM26215  Astragalus canadensis var. brevidens R. M. Austin 1883-09 42 Lassen Madaline Plains Comment
  UCD53891  Astragalus canadensis var. brevidens A. M. Shapiro 2005-6-10 s.n. Lassen 1 mi. SE Beckwourth Pass. 1524 Comment
  HSC82253  Astragalus curvicarpus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6005 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA111041  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5676 Lassen N or Doyle. 1265 Comment
  CAS-BOT-BC177847  Astragalus curvicarpus var. curvicarpus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville Comment
  UC84408  Astragalus curvicarpus var. curvicarpus unknown 1892-6-23 Lassen Honey Lake Comment
  UCD55155  Astragalus curvicarpus var. curvicarpus Ellen Dean 2006-5-15 3043 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  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
  UC1537108  Astragalus filipes Gordon H. True Jr. 1938-7-9 911 Lassen Madeline Plains near Termo; Madeline Plains near Termo 1524 Comment
  NY658499  Astragalus filipes J. T. Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  CDA19718  Astragalus gibbsii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 1341 Comment
  NY674273  Astragalus gibbsii G. Schoolcraft 1982-7-20 806 Lassen Wagner Canyon, east of McKesick Peak 1524 Comment
  POM26155  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  SEINET3416806 Image available Astragalus gibbsii Lewis S. Rose 1940-6-16 40595 Lassen Susanville, Susanville. 1280 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 Comment
  RSA110069  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5692 Lassen South of Milford. 1433 Comment
  SEINET10486588  Astragalus gibbsii Katherine L. Morris 1973-5-25 Morris 214 Lassen Collected in an area of artemisia tridentata, 4 mi se of susanville, on us 36. Comment
  SEINET10970063  Astragalus gibbsii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 881 Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  SEINET3165897  Astragalus inversus R. W. Spellenberg 2006-6-19 13744 Lassen along USFS access road 3.4 km E of Calif. Hwy. 139, the jct. of the road and highway 31 km SE of Modoca Co. line (just S of Adin) 1670 Comment
  NY675142  Astragalus iodanthus var. diaphanoides A. Tiehm 1980-5-29 5755 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  RSA294940  Astragalus lentiginosus var. albifolius A. Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile N of Wendel. 1232 Comment
Read comments
Oct 25 2007
  CAS-BOT-BC187156  Astragalus lentiginosus var. chartaceus John Thomas Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  CAS-BOT-BC187154  Astragalus lentiginosus var. chartaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49230 Lassen On Highway 395, 7 miles southeast of Milford 1280 Comment
  NY675509  Astragalus lentiginosus var. chartaceus H. D. D. Ripley 1943-6-14 5744 Lassen Hidden Valley east of Susanville 1311 Comment
  NY675579  Astragalus lentiginosus var. floribundus A. Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile north of Wendel 1231 Comment
  NY675585  Astragalus lentiginosus var. floribundus H. D. D. Ripley 1943-6-13 5678 Lassen North of Doyle 1265 Comment
  CHSC7665  Astragalus lentiginosus var. platyphyllidius Beverley J. Wise 1969-5-23 54 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CDA19719  Astragalus malacus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  POM45582  Astragalus malacus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC81230  Astragalus malacus unknown 1892-6-23 Lassen Honey Lake Comment
  SEINET10486634  Astragalus malacus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2599 Lassen Hallalujah jct intersection of us hwy 395 & calif hwy 70; in open waste area Adjacent to artemisia tridentata community. 1433 Comment
  CHSC83400  Astragalus pulsiferae var. coronensis R. Ondricek-Fallscheer 1999-7-9 201 Lassen About 11 air mi SE of Adin; E edge of Hunsinger Flat Rd. (USFS Rd. 38N04), 1.0 road mi south of jct. with USFS Rd. 39N08. 1600 Comment
  NY694121  Astragalus pulsiferae var. coronensis S. L. Welsh 2001-6-14 28150 Lassen East of Highway 395, road to Rams Horn Spring campground 1540 Comment
  RSA0006849  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 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
  CHSC13620  Astragalus purshii M. S. Taylor 1974-6-20 257 Lassen Ca. 400 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1554 Comment
  HSC28311  Astragalus purshii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19269 Lassen Harvey Valley near Cone Springs Comment
  HSC36246  Astragalus purshii John Rehling 1975-5-15 78 Lassen Along Hwy. 395 just before the turnoff to Janesville Comment
  JEPS108699  Astragalus purshii var. purshii H. Chappel, K. Moran, K. Strassman 2002-6-27 ALT- 13 Lassen Pit River Valley / Beaver Creek 1258 Comment
  CHSC117211  Astragalus purshii var. tinctus Lowell Ahart; John Dittes 2016-6-7 20984 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  SBBG67420  Astragalus purshii var. tinctus S. W. Hutchinson -Jun-1925 561 Lassen Eagle Lake 1554 Comment
  RSA26502  Astragalus whitneyi Marcus E. Jones 1897-6-30 s.n Lassen Susanville; 7 miles below Eagle Lake. 1524 Comment
  CDA7885  Astragalus whitneyi var. confusus G. Schoolcraft 1985-5-22 s.n. Lassen Along A2 about 5 miles S of Adin, CA. Comment
  SEINET3025881  Astragalus whitneyi var. sonneanus Marcus E. Jones 1897-6-28 Lassen Top of Diamond Peak, Susanville, Perkins Ranch. Comment
  NY701856  Astragalus whitneyi var. whitneyi N. H. Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  UC1567401  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  UC527347  Atriplex confertifolia C. B. Wolf 1931-9-5 2402 Lassen on road to Doyle 1/2 mi from Amedee R.R. station (Honey Lake Valley); , 1/2 mi from Amedee R.R. station Comment
  CAS-BOT-BC172656  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen In Secret Valley west of Hwy. 395 Comment
  JEPS94696  Atriplex gmelinii var. gmelinii Vernon H. Oswald and Lowell Ahart 1998-9-8 9581 Lassen 2.2 mi n of Bieber (on County Road 91 (Bieber-Lookout Road)); Ash Creek and Big Swamp, County Road 91 1258 Comment
  CDA2954  Atriplex hortensis E. E. Fix 1962-5-15 Lassen Pete Mendiboure property, Madeline. 0 Comment
  NY652204  Atriplex truncata G. Schoolcraft 1998-7-21 2334 Lassen Near Phone Spring south of Rush Creek 1402.1 Comment
  UCD129522  Balsamorhiza hirsuta G. Schoolcraft 2000-4-26 2891 Lassen Susanville, 1.8 miles west of Hwy 395 on Shaffer Mountain Road. 1554 Comment
  CAS-BOT-BC106485  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen Warner Mountains, Modoc National Forest - Five miles beyond Blue Lake on road to Likely 1767 Comment
  CHSC25298  Balsamorhiza hookeri Pauleen Broyles 1977-5-30 140 Lassen Spencer's Basin ca 8 km N of Herlong. 1770 Comment
  JEPS1758  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi w of, along Hwy. 36 Fredonyer Pass 1752 Comment
  CAS-BOT-BC106495  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-12 9318 Lassen Fredonia Pass near Susaville Comment
  OBI48169  Balsamorhiza hookeri Rhonda Riggins 1989-4-27 1635 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  SEINET10617201  Balsamorhiza hookeri Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 476 Lassen Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  CHSC31967  Balsamorhiza sagittata Wayne O. Baum 1971-6-21 71 -30 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC7644  Balsamorhiza sagittata Beverley J. Wise 1969-5-20 32 Lassen West city limits of Susanville on Hwy 36. 1341 Comment
  UC1119027  Balsamorhiza sagittata H. P. Hagge 1929-9-11 20 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  UC1794997  Balsamorhiza sagittata R. K. Brummitt 1998-5-17 19900 Lassen 2 km W of Susanville on Rte. 36 1350 Comment
  SEINET10924972  Balsamorhiza sagittata Katherine L. Morris, Douglas G. LeDoux; David B. Dunn 1973-5-25 Morris 216 Lassen Collected 2.6 mi. W of Susanville, on U.S. 36, in an area of Pinus jeffreyi and Purshia. Comment
  NY119710  Barbarea orthoceras N. H. Holmgren 1978-6-11 8919 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi.) E of Ravendale and 22.5 km (14 mi.) airline distance 1680 Comment
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CHSC117278  Beckmannia syzigachne Lowell Ahart; John Dittes 2016-7-15 21216 Lassen About 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1261 Comment
  POM172679  Beckmannia syzigachne Franklin P. Nutting 1894-7-6 s.n. Lassen Dixey Valley Comment
  UC1790750  Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road mi W of Hwy 395 on Hwy 70, then 5.5 road mi N on Scott Road 1493 Comment
  CHSC29912  Bidens cernua Robin L. Ondricek 1978-8-26 125 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  CAS-BOT-BC413000  Bistorta bistortoides A. M. Vollmer; L. Beane 1953-7-1 65 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC5031  Bistorta bistortoides L. B. Barlow 1967-7-14 121 Lassen Along Susan River, W. side Calif. State Highway 44. 5 mi. S. Silver Lake Rd. 1828 Comment
  HSC22872  Bistorta bistortoides John Pratt 1970-6-13 8 Lassen 1677 Comment
  CAS-BOT-BC128040  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen Sagebrush plains at south end of Secret Valley Comment
  CHSC92756  Blepharipappus scaber L. P. Janeway 2005-7-4 8462 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
Read comments
May 24 2013
  UC1119057  Blepharipappus scaber A. Simontacchi 1940-7-8 5575 Lassen 5.1 mi s of Jelly Camp (Halls Flat); Halls Flat 1699 Comment
  UCD129601  Blepharipappus scaber Bob Powell; Vic Claussen 1986-7-17 3274 Lassen 6 air miles south - southwest of Nubieber, within 100 feet of gate across main north-south trending road. 1402 Comment
  UCD129605  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  UC2046023  Boechera lincolnensis Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11189 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. 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
  CHSC68739  Boechera pinetorum Vernon H. Oswald; Lowell Ahart 1997-5-27 8483 Lassen East side of Hwy. 139 at a farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  CAS-BOT-BC25510  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 miles west of Madeline. 1584 Comment
  CAS-BOT-BC25512  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-7-31 50039 Lassen Sierra Nevada. Diamond Range on road from Janesville to Thompson Peak. 1737 Comment
  CHSC99133  Boechera retrofracta Lowell Ahart; John Dittes 2008-6-19 14884 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  SEINET3165698  Boechera retrofracta R. W. Spellenberg 2006-6-19 13743 Lassen along a USFS access road 2 km E of Calif. Hwy 139, the junction of road and highway 31 km SE of Modoc Co. line (just S of Adin) 1715 Comment
  CAS-BOT-BC25511  Boechera retrofracta Clarence Roy Quick 1961-6-21 61 -24 Lassen Black Mountain Experimental Forest northeast of Lassen Peak. Forest adjacent to Road 21. 1798 Comment
  UC585227  Boechera sparsiflora E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1761 Lassen nw side of summit of ridge e Red Rock 1828 Comment
  JEPS111475  Boechera sparsiflora B. A. Roy, J. W. Kirchner 1996-5-11 Lassen At intersection of Yellow Pine and Pine Needle. Drives up Jaynesville Grade, near Jaynesville (off highway 395 about 1 mile). Comment
  RSA772655  Boisduvalia glabella Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  JEPS103163  Bolboschoenus maritimus B. Corbin and D. Armentrout 2002-9-4 1098 Lassen Biscar Reservoir, upper pond. 1357 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
  CHSC27122  Bromus briziformis Robert A. Schlising 1978-6-28 3295 Lassen E of Eagle Lake at Lower Dry Lake. 1645 Comment
  CAS-BOT-BC149500  Bromus briziformis Clare B. Hardham 1961-6-17 7507 Lassen Susanville Aturas Road. Lava Flows. Route 395. 1432 Comment
  CAS-BOT-BC155942  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  UC570172  Bromus commutatus H. S. Yates 1936-8-11 6074 Lassen Baxter Creek 1280 Comment
  UCD58448  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  CAS-BOT-BC155324  Bromus inermis John Thomas Howell 1973-7-10 49766 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  CDA1827  Bromus japonicus A. A. Beetle 1941-6-28 2809 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 Comment
  JEPS107437  Bromus japonicus Lowell Ahart, John Dittes 2005-6-1 11865 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS123451  Bromus marginatus Wilson Collison, Jaileen Merced 2015-8-12 CA 320 -146 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  CAS-BOT-BC161656  Bromus secalinus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1615 Comment
  UC53747  Bromus secalinus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UC1131324  Bromus suksdorfii A. Simontacchi 1940-6-24 891 Lassen 6.4 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1950 Comment
  UC1136819  Bromus suksdorfii George A. Fischer and Irwin H. Johnson 1933-7-14 F 261 Lassen Lassen National Forest 1783 Comment
  CAS-BOT-BC161415  Bromus tectorum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16341 Lassen 13.5 miles east of Susanville. Comment
  CHSC106670  Bromus tectorum B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC112781  Bromus tectorum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18751 Lassen Drainage filled with dirt from the construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC44553  Bromus tectorum Lowell Ahart; John Thomas Howell 1974-7-9 520 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  NY664614  Bromus tectorum See comments 1935-6-15 Lassen Susanville 1310.6 Comment
  UC1131267  Bromus tectorum H. S. Yates 1936-8-12 6085 Lassen McKenzie Meadow 1524 Comment
  UC773967  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S 409 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  CAS-BOT-BC185001  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles west of Chester. Comment
  JEPS120868  Callitriche heterophylla Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18750 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD169625  Callitriche palustris R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1615 Comment
  SEINET11051598  Calocedrus decurrens D. Charlet 1996-7-8 2289 Lassen Sierra NV, Diamond Mountains, East Canyon, Milford Grade, Laufman Campground. 1620 Comment
  CHSC67072  Calochortus leichtlinii Willis Ball 1969-6-20 15 Lassen Found approx. 1 mile S. E. of E. L. B. S. about 50 ft. off the dirt road to the station. 1584 Comment
  RSA166662  Calochortus leichtlinii H. Dearing, M. Dearing 1938-7-1 2237 Lassen Top of pass west of Susanville 1763 Comment
  CHSC27637  Calochortus macrocarpus J. D. Prouty 1978-7-26 27 Lassen Gorilla's Roost to Stone's Ranch Rd., SE of Eagle L. 1584 Comment
  CHSC4768  Calochortus macrocarpus R. Carter 1967-7-16 620 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville. Comment
  CHSC6271  Calochortus macrocarpus A. Santos 1946-7-5 Lassen East side of Eagle Lake. 1615 Comment
  CAS-BOT-BC483437  Calochortus macrocarpus Amy Rhinehart 1895-6-1 s.n. Lassen Unspecified Comment
  CAS-BOT-BC273284  Calycadenia fremontii Barrett Anderson 1986-7-9 3125 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  HSC63826  Calyptridium monospermum Teresa Prendusi 1980-7-1 Lassen Champs Flat, 7 mi. W of northern tip of Eagle Lake 1677 Comment
  CHSC23563  Calyptridium umbellatum W. O. Baum 1971-6-21 43 Lassen In fire trail; e slope of Gallatin Peak. 1920 Comment
  UC1136685  Calyptridium umbellatum A. Simontacchi 1940-5-17 733 Lassen 5.7 mi ssw of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 Comment
  HSC17647  Calyptridium umbellatum Fred J. Kindel 1955-6-8 Lassen Westwood Comment
  JEPS88237  Calystegia occidentalis subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-17 7811 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Highway 36 ca. 7 mi W of Susanville. Modoc Plateau. Comment
  CAS-BOT-BC36995  Camelina microcarpa James Jokerst 1983-5-31 61011 Lassen Near Madeline Plains. 1583 Comment
  CHSC66238  Camelina microcarpa Vernon H. Oswald; Lowell Ahart 1996-6-24 7881 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 NE corner of the meadow (ca. 0.1 mi E of where Papoose Creek leaves the N end of the meadow). 1636 Comment
  NY850970  Camissonia boothii subsp. alyssoides P. A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  NY850974  Camissonia boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen About midway between Mapes and Secret Valley on U.S. Highway #395. 1372 Comment
  POM38501  Camissonia claviformis subsp. cruciformis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  RSA136892  Camissonia claviformis subsp. cruciformis Peter H. Raven, Otto T. Solbrig 1958-6-17 s.n. Lassen Along Hwy 395, 19.0 miles south of Ravendale Comment
  NY851232  Camissonia claviformis var. cruciformis A. A. Heller 1938-6-23 15211 Lassen U.S. Highway #395, about midway between Mapes and Secret Valley 1372 Comment
  CHSC93568  Camissonia contorta Lowell Ahart; John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  SEINET5343990  Camissonia contorta M. J. Williams 1974-7-26 74 -L-22 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 70 1494 Comment
  UCD55153  Camissonia contorta Ellen Dean 2006-5-15 3041 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  CHSC93567  Camissonia parvula Lowell Ahart; John Dittes 2005-6-2 11938 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  CHSC71092  Camissonia pubens Vernon H. Oswald; Lowell Ahart 1998-5-22 9136 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. Roadside banks. 1341 Comment
  JEPS107952  Camissonia pubens Lowell Ahart, John Dittes 2005-6-2 11993 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  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-BC160865  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1963-5-29 18426 Lassen Along U. S. Highway 395, 0.9 miles north of Ravendale 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
  JEPS124378  Capsella bursa-pastoris Lowell Ahart, John Dittes 2015-7-13 20308 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS28340  Carex abrupta George W. Gillett 1957-7-21 867 Lassen 300 yards n trail summit (Juniper Lake - Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  CHSC58858  Carex angustata Vernon H. Oswald; Lowell Ahart 1992-7-16 5115 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  SEINET7549686 Image available Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  SEINET7549702 Image available Carex angustata George W. Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake. 1850 Comment
  SEINET13327167  Carex aquatilis var. aquatilis J. Atchley 1993-5-5 1 Lassen Along willow creek. 1219 Comment
  SEINET7550662 Image available Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flats; Black Mountains Experimental Forest. Poison Lake 7.5' quad. 1767 Comment
  CHSC61064  Carex aurea Vernon H. Oswald; Lowell Ahart 1993-8-3 5742 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC66412  Carex aurea Vernon H. Oswald; Lowell Ahart 1996-6-17 7814 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  CAS-BOT-BC19394  Carex bolanderi John Thomas Howell; Gordon H. True 1973-8-1 50175 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  UC2015835  Carex breweri Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4446 Lassen Lassen Volcanic National Park. Lassen Peak. Comment
  HSC95168  Carex cusickii Gordon Leppig, J. Cromwell 1997-7-26 600 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95169  Carex cusickii Gordon Leppig 1998-7-12 952 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC113778  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highwy 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  UC2031876  Carex densa Nick Otting and Bruce Newhouse 2003-7-17 703 Lassen Cascade Mountains, Susan River, 2 air miles west of Susanville. Comment
  CAS-BOT-BC19779  Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvery Valley. Comment
  HSC48336  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19246 Lassen 2 mi. N of Westwood Comment
  UC1537637  Carex douglasii Gordon H. True Jr. 1939-6-15 996 Lassen w Grasshopper Lake; Bullard Lake Comment
  CAS-BOT-BC19776  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Plumas National Forest. Milford Ranger District. East side of saddle, ca. 0.8 mile northeast of Meadowview Peak. 1981 Comment
  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
  SEINET10823343  Carex douglasii Gordon H. True 1939-6-15 True 996 Lassen Bullard Lake west of Grasshopper Valley. Comment
  SEINET3900583  Carex douglasii D. H. Norris, T. Nelson; Steve Dowty 1971-6-22 19246 Lassen About 2 miles north of Westwood, California.; 0 Comment
  SEINET7557452 Image available Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvey Valley. Comment
  CAS-BOT-BC21303  Carex fracta John Thomas Howell; Gordon H. True 1973-7-31 50047 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  UC1609196  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CAS-BOT-BC28194  Carex hoodii George Wilson Gillett 1957-7-29 946 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  CAS-BOT-BC35780  Carex jonesii J. T. Howell 1934-6-14 12165 Lassen Warner Mts.; near Lost Lake 2438 Comment
  CAS-BOT-BC35781  Carex jonesii J. T. Howell 1934-6-14 12164 A Lassen Warner Mts.; near Lost Lake 2438 Comment
  UC1609339  Carex lasiocarpa Vernon H. Oswald and Lowell Ahart 1993-8-3 5752 Lassen e Silver Lake (nw part of the swamp, just e of the Caribou Wilderness, ca. 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  CHSC85008  Carex lenticularis var. lipocarpa L. P. Janeway; B. Castro 2003-10-5 8004 Lassen High Cascade Range. Western edge of Triangle Lake; Caribou Wilderness Area. 2153 Comment
  HSC103673  Carex lenticularis var. lipocarpa Thomas W. Nelson, Jane Nelson 1985-8-10 8023 Lassen Margin of pond along south side of lava flow on west side of Silver Lake 1829 Comment
  UC2031882  Carex microptera Nick Otting and Danna Lytjen 2003-7-15 692 Lassen Sierra Nevada Mountains, Diamond Mountain, 1500 feet southeast of summit, 7.5 air miles south-southwest of Susanville. Comment
  CAS-BOT-BC31947  Carex microptera John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50699 Lassen Steep rocky slope S and SE of Diamond Mt. 2286 Comment
  UC1100497  Carex nebrascensis Verne Grant and Herbert L. Mason 1947-7-9 13301 Lassen 5 mi e Bieber 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
  CHSC89760  Carex petasata L. P. Janeway 2004-6-26 8164 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UC1133448  Carex petasata Robert W. Gardner 1939-6-28 G- 32 Lassen Burgess Spring Experimental Range, Halls Flat Quadrangle Burgess Spring Experimental Range Comment
  CAS-BOT-BC118399  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49193 Lassen Elysian Valley, northwest of Janesville. 1325 Comment
  CHSC91379  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11864 Lassen On the west side of a poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  JEPS107834  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  SEINET10585735  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 Ahart 17477 Lassen T38N, R10E, center of north 1/2 Section 22. About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1521 Comment
  UC190401  Carex praegracilis M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  POM81761  Carex sheldonii Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  JEPS122357  Carex simulata Joseph Broberg, Jaycee Leonard 2012-7-25 CA 320 -115 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left onto Cold Springs road. Collection is at Dodge Springs Comment
  JEPS96099  Carex simulata Vernon H. Oswald and Lowell Ahart 1996-6-17 7815 Lassen Bizz Johnson Trail at 6.0 mi post e Devils Corral Trailhead (<trailhead> located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  CHSC114404  Carex spectabilis Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. About 1.8 air miles east of Diamond Mountain summitnand 0.3 mile west of end of Road 28N52A. 2225 Comment
  CAS-BOT-BC117017  Carex straminiformis John Thomas Howell; Gordon H. True 1973-8-1 50200 Lassen Ca 3 mi SE of Diamond Mt. East slope of Diamond Range, south of Susanville. Comment
  UC1142962  Carex straminiformis A. L. Hormay 1941-6-19 25 Lassen Squaw Valley Lassen National Forest 1737 Comment
  CAS-BOT-BC116606  Carex subfusca Clare B. Hardham 1969-8-28 17440 Lassen West of Janesville. Comment
  CAS-BOT-BC116624  Carex subfusca John Thomas Howell 1973-7-10 49779 Lassen Fredonyer Pass. 1737 Comment
  CAS-BOT-BC116612  Carex subfusca Hans Leschke 1957-9-21 1528 Lassen Trail Butte Lake-Cinder Cove at cold spring. 1859 Comment
  CAS-BOT-BC116614  Carex subfusca Hans Leschke 1954-7-3 s.n. Lassen Border of swamp north of Willow Lake. 1661 Comment
  CAS-BOT-BC116616  Carex subfusca B. Clear 1938-7-13 s.n. Lassen Dersch Meadows, Lassen Park. 2016 Comment
  CAS-BOT-BC116622  Carex subfusca W. B. Cooke; V. G. Cooke 1976-10-7 53192 Lassen Lassen Volcanic National Park, Butte Lake. 1841 Comment
  RSA201855  Carex subfusca Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  CAS-BOT-BC115284  Carex utriculata George Wilson Gillett 1957-7-22 885 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. Comment
  JEPS28336  Carex utriculata George W. Gillett 1957-7-22 885 Lassen near campsite at s end of lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  CAS-BOT-BC115282  Carex utriculata W. B. Cooke; V. G. Cooke 1976-10-7 53193 Lassen Butte Lake, Near lake shore, Lassen Volcanic National Park. Comment
  CAS-BOT-BC248972  Castilleja Margaret M. Hanna 1956-6-3 942 Lassen 2 mi. west of Nubieber, Hiway 299 Comment
  JEPS79146  Castilleja angustifolia L. R. Heckard with R. Bacigalupi 1980-6-11 5249 Lassen about 8 mi ne Litchfield (along U.S. Hwy 395) 1371 Comment
  JEPS94129  Castilleja angustifolia Vernon H. Oswald and Lowell Ahart 1998-5-22 9108 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  RSA17674  Castilleja angustifolia Elmer I. Applegate 1934-5-4 8921 Lassen South of Secret Valley. Comment
  UC1393122  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen about 6 mi n Honey Lake 1280 Comment
  HSC20562  Castilleja angustifolia M. L. Stuart 1965-5-2 56 Lassen 2 mi. N of Termo. on Hwy. 395 1829 Comment
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  CHSC7749  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-11 103 Lassen West city limits of Susanville at 'Inspiration Point. 1341 Comment
  CHSC7750  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-4 105 Lassen 4 mi. north of Susanville on Hwy 139 (Antelope Grade). 1371 Comment
  HSC23468  Castilleja applegatei subsp. pinetorum John Pratt 1970-6-21 29 Lassen 1738 Comment
  JEPS117583  Castilleja applegatei subsp. pinetorum Lowell Ahart, John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  JEPS118213  Castilleja applegatei subsp. pinetorum Dean W. Taylor 2004-5-14 19068 Lassen Ash Valley, County Road 527 (Forest Road 39N08) ca. 0.5 miles South of crossing of Ash Creek 1539 Comment
  RSA747544  Castilleja applegatei subsp. pinetorum K. M. Meyer, A. Townesmith 2007-7-23 152 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  UC1063040  Castilleja applegatei subsp. pinetorum H. P. Hagge 1929-9-12 25 Lassen Logan Mtn.; Eagle Lake Quad. 1828 Comment
  UC1537569  Castilleja applegatei subsp. pinetorum Gordon H. True Jr. 1936-6-27 563 Lassen Hot Springs Mountain 1676 Comment
  RSA523923  Castilleja arachnoidea Barbara J. Ertter 1988-7-25 7861 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  UC1609116  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1993-6-14 5525 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd (Lassen A1), at Sandy Beach, on the w shore of Eagle Lake, on the upper beach between the road and the lake); Eagle Lake 1566 Comment
  SJSU5841  Castilleja campestris J. W. Tilden 1958-6-27 1291 Lassen Madeline Comment
  JEPS87488  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  UC1609193  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  UC725999  Castilleja campestris subsp. campestris A. A. Heller 1938-6-23 15218 Lassen between Termo and Madeline (along U.S. Hwy 395) 1615 Comment
  SEINET3159144  Castilleja chromosa J. L. Strother 1970-5-23 954 Lassen about 6 mi N of Honey Lake 1280 Comment
  UCD55264  Castilleja chromosa Ellen Dean 2006-5-15 3062 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  SEINET10549100  Castilleja chromosa Paul Gallian 1971-6-2 Gallian 460 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, jeffry pine along high ridge in sandy wash. Comment
  SEINET10457537  Castilleja disticha Morris 1973-5-25 MORRIS 221 Lassen Collected in an area of sugar pine, libcedrus, and yellow pine. 2.5 Mi n of jct 36 and hwy 44. Comment
  CHSC60852  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1993-6-28 5575 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  JEPS80683  Castilleja lacera L. R. Heckard and T. I. Chuang 1981-6-10 5534 Lassen about 0.5 mi w Almanor Inn (or n road to Route 89) 1371 Comment
  UC1567405  Castilleja lacera G. Schoolcraft 1989-6-5 1895 Lassen s of Adin (intersection of Hwy 139 and A2) 1341 Comment
  RSA18167  Castilleja miniata Carl B. Wolf 1929-9-1 3778 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  UC1523790  Castilleja miniata Gary Schoolcraft Aug 1979 Lassen Goodrich Meadow 1554 Comment
  UC485781  Castilleja miniata H. E. and S. T. Parks Jun 1928 250 Lassen Drakesbad; Lassen National Park Comment
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  JEPS76165  Castilleja pilosa T. I. Chuang and Fei-Mei Chuang 1977-7-25 7658 Lassen about 0.25 mi s Madeline (on Highway 395) Comment
  UC1483790  Castilleja pilosa Mary Meyer 1980-7-1 Lassen Champs Flat 1677 Comment
  CAS-BOT-BC241004  Castilleja pilosa E. K. Balls 1950-5-19 14 .778 Lassen 17.5 mi. W. of Madeline on rd. from Adin 1676 Comment
  POM43075  Castilleja psittacina Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1523759  Castilleja tenuis Gary Schoolcraft 1982-6-21 714 Lassen Ash Valley 1584 Comment
  UC1609289  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1993-6-28 5576 Lassen 0.2 mi n Highway 44 (Harvey Valley Rd. (33N02), e side of Grays Valley, e of Poison Lake); Grays Valley 1749 Comment
  SBBG128749  Castilleja tenuis L. Ahart, J. Dittes 2008-6-22 15027 Lassen a small natural drainage, ca. 20 yards W of the rd levee, open meadow area, in Big Valley, ca. 2.1 mi (air) NE of the Headqaurters at Ash Crk State Wildlife Area, ca. 5.0 mi (air) NE of Bieber 1262 Comment
  CAS-BOT-BC39555  Caulanthus major T. Prendusi 1980-7-21 30 Lassen Fredonyer Peak. 2377 Comment
  UCD164167  Caulanthus major N. Ivalu Cacho; Sharon Y. Strauss, Bryan T. Drew 2010-7-5 IC-SS 131 - Lassen Fredoyner Peak; on rocky outcrop on summit. 2393 Comment
  JEPS123842  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2015-7-14 20329 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  NY608461  Caulanthus major var. nevadensis G. Schoolcraft 1981-7-15 510 Lassen Near top of Fredonyer Peak along lookout road. 2377.4 Comment
  RSA0035394  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2008-6-20 14920 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1523761  Caulanthus major var. nevadensis Gary Schoolcraft 1982-6-23 733 Lassen Ft. Sage Mtns. 1828 Comment
  CAS-BOT-BC49258  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7993 Lassen Big Valley Mts. Comment
  CHSC5069  Ceanothus prostratus D. L. Stites 1967-7-1 111 Lassen On Black Mt. 5 mi s of Eagle Lake Biology Station. 1828 Comment
  UC1071529  Ceanothus prostratus A. Simontacchi 1940-5-13 706 Lassen 4.1 mi W of Harvey Mountain 1981 Comment
  JEPS42164  Ceanothus velutinus Brown and Wieslander 1921-9-1 83 Lassen Martin Sring Eagle Lake 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
  CDA7222  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  CDA7341  Centaurea squarrosa Loring White Jul 1950 Lassen Kramer Ranch, Big Valley, just over line Modoc-Lassen. 0 Comment
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May 19 2009
  CDA7344  Centaurea squarrosa Loring White 1950-8-19 Lassen Cramer Ranch. Big Valley. 0 Comment
  CHSC71852  Centaurea squarrosa Vernon H. Oswald; Lowell Ahart 1998-9-8 9571 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 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-BC106029  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen On both sides of the road from 0.1 to 0.9 mi. s. of the bridge at Pittville Comment
  SEINET7379749 Image available Centromadia pungens M. J. Williams, G. Smith 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  CAS-BOT-BC388152  Cerastium fontanum Louella Bass 1973-6-3 90 Lassen Elysian Valley. West side of Ridge Meadow 1325 Comment
  JEPS124551 Image available Cercocarpus ledifolius P. L. Billings 1965-7-12 90 Lassen 5 mi. N of Susanville on Hwy 139 - 50 yds from road. Comment
  CAS-BOT-BC143808  Cercocarpus ledifolius var. ledifolius L. B. Barlow 1967-7-15 130 Lassen Eagle Lake Biological Station, east central side of Eagle Lake 1554 Comment
  RSA0027356  Chaenactis John F. Emmel 1994-7-17 1331 Lassen Summit area of Observation Peak. 2378 Comment
  CDA10715  Chaenactis douglasii var. achilleifolia T. C. Fuller 1959-7-7 Lassen Highway 395, 1.6 miles south of Ravendale. 0 Comment
  CAS-BOT-BC276614  Chaenactis douglasii var. douglasii Louella Bass 1978-7-11 78 -10 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC276616  Chaenactis douglasii var. douglasii John Thomas Howell 1955-7-19 30813 Lassen E side of Beckwourth Pass 1493 Comment
  CHSC93690  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction. 1460 Comment
  JEPS30488  Chaenactis douglasii var. douglasii Peter H. Raven with Otto T. Solbrig 1958-6-17 13291 Lassen 0.4 mi s of Ravendale (along U.S. Highway 395) Comment
  CAS-BOT-BC276622  Chaenactis douglasii var. douglasii Margaret Williams 1974-7-27 74 -L-52 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  UC1777700  Chaenactis douglasii var. douglasii Donald W. Kyhos 1967-9-1 67 -88 Lassen Mt. Lassen National Park. Area within 1/2 mile north of Hat Lake. Pumice slopes Comment
  UCD19670  Chaenactis douglasii var. douglasii Donald W. Kyhos 1967-9-1 67 -88 Lassen Mt. Lassen National Park. In the devastated area within 1/2 mile north of Hat Lake. Comment
  SEINET7450277 Image available Chaenactis nevadensis D. W. Kyhos 1967-9-1 67 -87 Lassen Within 1/2 mile north of Hat Lake Comment
  SEINET7450297 Image available Chaenactis stevioides F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  RSA748319  Chamaebatia foliolosa K. M. Meyer, A. Townesmith 2007-7-23 149 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
  CHSC19727  Chamaebatiaria millefolium Mary E. Meyer 1973-7-7 14 Lassen Located west of ELBS water tower. Comment
  CHSC30047  Chamaesaracha nana Jennifer Estep 1978-7-27 18 Lassen Dry L., SE of Eagle L. Comment
  UC1523765  Chamaesaracha nana Gary Schoolcraft 1981-7-1 493 Lassen e slopes Roop Mountain 2133 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  UC1745664  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CAS-BOT-BC460932  Chenopodium hians John Thomas Howell 1934-7-8 12499 Lassen Spalding's, Eagle Lake Comment
  UC1483846  Chimaphila menziesii G. Schoolcraft 1980-7-29 344 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  CHSC6236  Chimaphila umbellata P. Balch 1955-7-22 Lassen Roadside between Eagle Lake and Pittville Road. 1676 Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CAS-BOT-BC247864  Chorizanthe watsonii John Thomas Howell 1934-6-10 11854 Lassen 4 miles south of Omira Comment
  SBBG18321  Chorizanthe watsonii C. B. Hardham 1961-6-17 7499 Lassen Baxter Crk, S of Susanville 1524 Comment
  UC149174  Chorizanthe watsonii T. S. Brandegee Lassen Honey Lake Comment
  UC1135263  Chrysolepis sempervirens A. Simontacchi 1940-8-8 938 Lassen 4.2 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1889 Comment
  UCSB62935  Chrysolepis sempervirens Sarr, Dan 1995-7-31 Lassen within crater of Crater Mountain 670 Comment
  RSA3149  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles form Wendel on road to Jonesville 1220 Comment
  CAS-BOT-BC106023  Chrysothamnus viscidiflorus subsp. lanceolatus Ynez Whilton Winblad 1935-9-23 s.n. Lassen Susanville Comment
  CAS-BOT-BC105907  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  JEPS21415  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-10-5 4664 Lassen Wendel Comment
  UC1483871  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1980-10-8 357 Lassen near turn-off to Big Spring (along Post Camp road) 1706 Comment
  UC761845  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-10-5 4664 Lassen Wendel Comment
  UC1537660  Chylismia claviformis subsp. cruciformis Gordon H. True Jr. 1937-7-10 791 Lassen mesa Skedaddle 1493 Comment
  UC725393  Chylismia claviformis subsp. cruciformis A. A. Heller 1938-6-23 15211 Lassen US Hwy 395 about midway between Mapes and Secret Valley 1371 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
  POM35788  Cichorium intybus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UCD159568  Cirsium D. S. Park 2011-6-27 305 Lassen Near Antelope Mt. 1999 Comment
  NY409534  Cirsium arvense G. Schoolcraft 1988-8-10 1847 Lassen In Willow Creek Valley along Hwy. 139. 149.4 Comment
  UCR67462  Cirsium arvense George K. Helmkamp 1990-9-23 A- 01 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CDA1127  Cirsium canescens G. D. Barbe 1982-7-12 3875 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 Comment
  CHSC75452  Cirsium cymosum Vernon H. Oswald 1999-6-9 9740 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. Along the road. 1356 Comment
  CDA1173  Cirsium cymosum G. D. Barbe 1982-7-12 3870 Lassen Grasshopper Valley; South Grasshopper Rd, 0.8 miles northeast of Hwy 139. 0 Comment
  RSA0070635  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 Lassen North of the road, 0.4 km east of campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. Comment
  CAS-BOT-BC280058  Cirsium neomexicanum T. C. Fuller 1980-8-5 20312 Lassen 0.4 km. east of the campground, east shore of Dodge Reservoir, 28 km. (17.5 mi.) northeast of Ravendale Comment
  SEINET3082769 Image available Cirsium occidentale var. candidissimum N. H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  CAS-BOT-BC285517  Cirsium occidentale var. candidissimum Blanche Clear 1940-7-30 s.n. Lassen Between Manzanita Lake and Burney Falls. On highway Comment
  CAS-BOT-BC280438  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  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
  CDA1561  Cirsium scariosum var. americanum T. C. Fuller 1959-7-6 2979 -B Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  LA47494  Clarkia gracilis subsp. albicaulis Clare B. Hardham; 1961-6-16 7485 Lassen Gold Run Creek, S of Susanville Comment
  CHSC92753  Clarkia gracilis subsp. gracilis L. P. Janeway 2005-7-4 8465 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  JEPS107812  Clarkia lassenensis Lowell Ahart, John Dittes 2005-6-2 11951 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
  JEPS108559  Clarkia lassenensis L. P. Janeway 2005-7-3 8452 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
  RSA122142  Clarkia rhomboidea L. R. Short, Wm. Gansberg 1936-7-3 S- 358 Lassen MDM. Burgess Spr. Exp. Range. Lassen National Forest 1848 Comment
  UC1537615  Clarkia rhomboidea Gordon H. True Jr. 1936-6-26 549 Lassen 2 mi e Eagle Lake (head of creek); Willow Creek 1584 Comment
  JEPS123454  Clarkia rhomboidea Wilson Collison, Jaileen Merced 2015-7-13 CA 320 -139 Lassen 2014 Bald Fire, West Beaver Creek. Comment
  CHSC59559  Clarkia stellata Mary Meyer 1980-7-1 Lassen Along road traversing southern end of McCoy Flat. 1645 Comment
  CHSC83619  Clarkia stellata L. P. Janeway 2001-6-28 7233 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  NY242101  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi. N. Wendel Rd. along Skedaddle Ranch Rd. 1463.0 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
  UC83292  Cleomella parviflora Mrs. C. C. Bruce 2364 a Lassen Shumway Comment
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Dec 20 2007
  UC1533121  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen about 1 mi w CA-NV stateline (along Smoke Creek Road) 1341 Comment
  POM93728  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  SEINET5767254  Cleomella plocasperma D. S. Mapes 1942-7-13 s.n. Lassen 2 1/2 miles SW of Wendel, Honey Lake Basin 1067 Comment
  CHSC36452  Collinsia greenei Susan H. Euing 1982-6-6 6 Lassen Pine Creek below fish trap. Flood plain-dry lake bed area. Comment
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Jun 18 2018
  RSA152668  Collinsia parviflora I. L. Wiggins, Dorothy Wiggins 1961-6-10 16322 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  UC2016544  Collinsia parviflora Richard Olmstead 1984-6-26 578 Lassen 3.5 miles east of junction of Forest Service Road and Red Rock Lookout Road (28N02), on Red Rock Lookout Road. Near small stream lined with alders. Comment
  NY963534  Collomia grandiflora N. H. Holmgren 1980-7-4 9502 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  SEINET2445250  Collomia grandiflora Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9502 Lassen Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0 1890 Comment
  CHSC80232  Collomia tinctoria Jeanne Boze 1981-6-12 109 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 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
  NY704016  Conringia orientalis N. H. Holmgren 1980-7-3 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CHSC6282  Convolvulus arvensis D. L. Stites 1967-7-1 141 Lassen 10 mi se of Eagle Lake Biology Station on Lower Murrer's Meadow. 1371 Comment
  JEPS121063 Image available Convolvulus arvensis M. L. Wheelis 1964-7-1 123 Lassen HIghway 395, 3 miles north of Hallelulah Junction. Comment
  CAS-BOT-BC286112  Conyza canadensis John Thomas Howell; Gordon H. True 1973-8-1 50154 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC286116  Conyza canadensis John Thomas Howell 1974-7-8 50503 Lassen Susanville 1295 Comment
  CAS-BOT-BC286114  Conyza canadensis Louella Bass 1983-9-1 s.n. Lassen At Edward Bass residence, Standish Comment
  JEPS74351  Cordylanthus maritimus subsp. canescens L. R. Heckard, T. I. Chuang and R. Bacigalupi 1974-7-25 3769 Lassen 4.6 mi n U. S. 395 (along County route A-3 (near old school house, several mi w of Honey Lake); Honey Lake 1219 Comment
  UC761815  Cordylanthus ramosus R. F. Hoover 1940-10-1 4655 Lassen Jonesville Comment
  CAS-BOT-BC212208  Cornus sericea John Thomas Howell; Gordon H. True 1973-7-31 50043 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1783 Comment
  JEPS88238  Cornus sericea subsp. sericea Vernon H. Oswald and Lowell Ahart 1996-6-17 7810 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, at 6 mi. post e. of Devils Corral Trailhead); Modoc Plateau 1420 Comment
  CHSC83603  Crepis acuminata L. P. Janeway 2001-6-28 7234 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  RSA699966  Crepis acuminata L. P. Janeway 2001-6-20 7197 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1510 Comment
  UC581256  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2294 Lassen s Janesville; Thompson Peak 2133 Comment
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  CHSC64752  Crepis bakeri Vernon H. Oswald 1995-5-31 6796 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CAS-BOT-BC376483  Crepis bakeri subsp. cusickii G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-14 2331 Lassen Along road half way between Bogard Ranger Station and Harney Valley 1630 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
  UC773981  Crepis intermedia L. R. Short 1935-7-9 S- 509 B Lassen Burgess Spring Experiment Range 1818 Comment
  CAS-BOT-BC291547  Crepis intermedia Margaret Williams 1974-8-4 74 -L-76 Lassen Near Hallelujah Junction west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  JEPS36426  Crepis monticola W. L. Jepson 1910-6-10 4108 Lassen King Creek 1524 Comment
  UC581275  Crepis monticola G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2332 Lassen Burgess Springs Experimental Range 1700 Comment
  SEINET8513568 Image available Crepis occidentalis A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1092 Lassen Plumas Allotment, Highway 395 into California, first median crossing after check station, turn right, follow road right (South) take, 2nd left, follow uphill road bearing Southeast until reach gray metal gate, along roadside 1541 Comment
  UC1136843  Crepis occidentalis L. R. Short and W. Gansberg S- 361 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1871 Comment
  UC1924597  Crepis occidentalis Debra Valov 2006-5-28 2006007 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1305 Comment
  UC540880  Crepis occidentalis David D. Keck and J. Clausen 1935-6-25 3759 Lassen Susanville; just w of town 1340 Comment
  UC581267  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2304 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC1776658  Crepis occidentalis G. Schoolcraft 1998-6-8 2731 Lassen Hills N. of Wendel 1402 Comment
  UCD130972  Crepis occidentalis J. E. Stuart 1930-6-12 2158 Lassen near Constantia, Reno Highway. 15 Comment
  CAS-BOT-BC290742  Crepis occidentalis subsp. costata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2320 Lassen Black Mountain about a mile below the summit 1940 Comment
  CAS-BOT-BC376502  Crepis occidentalis subsp. occidentalis David D. Keck; J. Clausen 1935-6-24 3752 Lassen 2 miles south of Ravendale 1463 Comment
  UC581289  Crepis occidentalis subsp. occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1748 Lassen nw-facing slope of ridge e Red Rock 1600 Comment
  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
  HSC81480  Cryptantha ambigua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6016 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  CHSC13453  Cryptantha circumscissa J. Pitts 1972-6-23 267 Lassen 50 yds. E of Eagle Lake Field Station. Comment
  CHSC25315  Cryptantha circumscissa Pauleen Broyles 1977-4-1 168 Lassen Roadway along Skedaddle Creek ca 8 km ene of Herlong. 1350 Comment
  JEPS67504  Cryptantha circumscissa W. L. Jepson 1918-8-2 7761 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC189458  Cryptantha circumscissa var. circumscissa Alice Eastwood; John Thomas Howell 1940-6-16 8333 Lassen Near Susanville Comment
  UC1483850  Cryptantha humilis G. Schoolcraft 1979-5-13 50 Lassen on ridge top of Skedaddle mtns. Skedaddle Mtns. 2286 Comment
  JEPS109640  Cryptantha intermedia Dean W. Taylor 2002-6-21 18172 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  JEPS103177  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley 1706 Comment
  CHSC64766  Cryptantha pterocarya var. pterocarya Vernon H. Oswald 1995-5-24 6760 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. Slope at the base of the Amedee Mtns. 1280 Comment
  JEPS107799  Cryptantha pterocarya var. pterocarya Lowell Ahart, John Dittes 2005-6-2 11982 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
  CHSC68850  Cryptantha simulans Vernon Oswald; Lowell Ahart 1997-6-24 8594 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  RSA123891  Cryptantha simulans G. A. Fischer, I. Johnson 1933-7-14 F- 260 Lassen Lassen Forest. 1784 Comment
  POM72228  Cryptantha torreyana Marcus E. Jones 1897-6-19 6862 Lassen Chat 1616 Comment
  UC402818  Cryptantha torreyana Milo S. Baker Jul 1912 Lassen Pine Creek Comment
  SEINET10497287  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 280 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1584020  Cryptantha watsonii G. Schoolcraft 1990-6-12 2089 Lassen about 17 mi e Ravendale (in Pine Dunes RNA) 1706 Comment
  UC1134216  Cupressus bakeri D. Dunning 1935-11-7 Lassen 2 mi E of Burney Spring 1463 Comment
  JEPS47106  Cuscuta californica Brown and Wieslander 1922-8-20 85 Lassen Martin Springs Eagle Lake Comment
  RSA0049668  Cusickiella douglasii Dean Wm. Taylor 2012-5-15 21198 Lassen Hayden Hill Mine region, stony flats along the county road about 1 mile East of Snyder Waterhold 1722 Comment
  CHSC60296  Cymopterus terebinthinus var. californicus Mary Ann Showers 1992-6-13 2560 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  RSA0049616  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the crest 1950 Comment
  JEPS28326  Cyperus squarrosus George W. Gillett 1957-9-4 1125 Lassen e. margin of lower lake Widow Lake (near inlet); Lassen Volcanic Nat'l Park 2072 Comment
  UC4436  Cypripedium californicum Mrs. R. M. Austin 1882-1 Lassen Mt. Dyer Comment
  CHSC117185  Cystopteris fragilis Lowell Ahart; John Dittes 2016-6-7 21007 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CHSC117527  Damasonium californicum Lowell Ahart; John Dittes 2016-7-13 21138 Lassen South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC60782  Damasonium californicum Vernon H. Oswald; Lowell Ahart 1993-6-14 5507 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. 1728 Comment
  SEINET3895836 Image available Damasonium californicum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0 1698 Comment
  UC1130604  Damasonium californicum A. Simontacchi 1940-7-4 914 Lassen s. shore Government Lake; Lassen Nat'l Forest, Halls Flat Quad., Government Lake Comment
  RSA245244  Damasonium californicum John Pratt 1970-6-21 33 Lassen [No locality information provided] Comment
  CHSC66281  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1996-6-24 7839 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  JEPS88511  Danthonia californica var. americana Vernon H. Oswald and Lowell Ahart 1996-6-24 7839 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1),on w side of meadow just s of cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UC506937  Danthonia californica var. americana George A. Fischer and Irwin H. Johnson 1933-7-12 F 236 Lassen Patterson Flat Lassen National Forest 1737 Comment
  CHSC60866  Danthonia unispicata Vernon H. Oswald; Lowell Ahart 1993-6-28 5579 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  UCD61076  Danthonia unispicata L. Whitney 1935-6-24 Lassen Ashurst Mt., N of Harvey Valley, ca. 35 mi. NW of Susanville. Comment
  CAS-BOT-BC291779  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  JEPS79213  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CAS-BOT-BC1424  Delphinium andersonii David Daniels Keck; J. Clausen 1935-6-24 3748 Lassen 2 mi. S of Ravendale 1464 Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  UCR244044  Delphinium andersonii Jim Andre 1993-6-1 19714 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  RSA0005299  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 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-BC9945  Delphinium nudicaule Mrs. H. C. Cantelow 1941-5-22 N. S. Lassen Fredonyer Pass, 12 miles west of Susanville. Comment
  UC773881  Delphinium nuttallianum L. R. Short 1936-5-12 S- 347 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1834 Comment
  HSC27054  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  UCD61119  Deschampsia cespitosa A. L. Hormay 1941-6-23 13 Lassen Lassen National Forest. Burgess Spring. 1676 Comment
  CAS-BOT-BC194258  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1943-7-10 49769 Lassen Near Westwood - Sierra Nevada 1554 Comment
  CAS-BOT-BC194261  Deschampsia cespitosa subsp. cespitosa John Thomas Howell; Gordon H. True 1973-8-1 50230 Lassen Headwaters of Boxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  POM203128  Deschampsia cespitosa subsp. cespitosa J. T. Howell 1934-7-9 12517 Lassen Bridges Creek Spring. Comment
  UC1037258  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1933-8-2 106 Lassen ca. 8 mi. n.w. Eagle lake (Slate Creek, Lassen Nat'l Forest); Lassen Nat'l Forest, Slate Creek 1920 Comment
  CAS-BOT-BC192743  Deschampsia danthonioides Lassen 1927 G. S. Crew 1927-7-15 52 Lassen Lassen National Forest 1737 Comment
  CHSC91297  Deschampsia danthonioides Lowell Ahart; John Dittes 2005-6-1 11913 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS88325  Deschampsia danthonioides Vernon H. Oswald and Lowell Ahart 1996-6-24 7840 Lassen 2.5 mi. s. of Eagle Lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), Papoose Meadows, w. side of meadow just s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UCD62833  Deschampsia danthonioides Malcolm A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles N of Madeline. Comment
  UCD62999  Deschampsia danthonioides John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49499 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CAS-BOT-BC201809  Deschampsia elongata Malcom A. Nobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  UCD63522  Deschampsia elongata Malcolm A. Knobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles N of Madeline. Comment
  CAS-BOT-BC40904  Descurainia incana John Thomas Howell 1934-6-10 11903 Lassen 3 miles south of Ravendale. Comment
  CHSC25061  Descurainia pinnata L. B. Barlow 1967-6-23 7 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC4811  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected at Eagle Lake Biology Station, e central shore of Eagle Lake. 1524 Comment
  UC1126907  Descurainia pinnata A. Simontacchi 1940-6-4 808 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1783 Comment
  UC1143030  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  CAS-BOT-BC43165  Descurainia pinnata subsp. brachycarpa A. Simontacchi 1940-6-4 808 Lassen 14.8 miles west of Harvey Mountain Lookout. 1813 Comment
  CAS-BOT-BC43166  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9327 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CAS-BOT-BC43167  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9325 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CHSC13510  Descurainia sophia J. Pitts 1967-6-23 269 Lassen Front of Vesta Holt Hall, Eagle Lake Biology Station. Comment
  CHSC57356  Descurainia sophia B. G. Clark 1987-4-15 22 Lassen Lassen or Inyo counties. Top of knoll 1/4 mi sw of Lassen College adjacent and west of hwy 139. Comment
  UC1126908  Descurainia sophia A. Simontacchi 1940-6-8 828 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  JEPS25534  Dichelostemma multiflorum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7148 Lassen 3.7 mi s Susanville to Adin road junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  POM109921  Dichelostemma multiflorum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin s Ranch. 1463 Comment
  UC3327  Dichelostemma multiflorum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  HSC82268  Dieteria canescens var. canescens Thomas W. Nelson, Jane P. Nelson 1980-7-6 5996 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1523806  Dieteria canescens var. canescens Gary Schoolcraft 1982-7-7 769 Lassen Ft. Sage Mtns. 1950 Comment
  JEPS30487  Dieteria canescens var. shastensis Peter H. Raven with Otto T. Solbrig 1958-6-15 13244 Lassen 5.7 mi w Westwood (on State Highway 36) Comment
  CAS-BOT-BC153680  Diplacus mephiticus H. D. Ripley; R. C. Barneby 1944-5-22 5956 Lassen South of Janesville 1280 Comment
  SBBG66659  Diplacus mephiticus S. W. Hutchinson -Jun-1925 Lassen near Eagle Lake Comment
  CHSC60776  Diplacus nanus Vernon H. Oswald; Lowell Ahart 1993-6-3 5482 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 1.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the NW edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  CAS-BOT-BC151430  Diplacus nanus H. D. Ripley; R. C. Barneby 1944-5-30 5977 Lassen Mouth of Madeline - Sierra Nevada 1706 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
  CHSC33328  Distichlis spicata P. Reynolds 1979-7-4 6 Lassen 1/2 mi. se of Wendel, 25 yds. from RR tracks. 1219 Comment
  CHSC91302  Distichlis spicata Lowell Ahart; John Dittes 2005-6-2 11922 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
  UC60225  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  UCD64624  Distichlis spicata var. stricta Verne Grant; Irving Schneider 1947-9-5 8377 Lassen Northwest shore of Eagle Lake by Sam Webb's place (Spaulding). Comment
  HSC86883  Dodecatheon alpinum K. R. Stern 1967-6-24 2403 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station 1555 Comment
  SD61013  Dodecatheon alpinum subsp. majus Darley F. Howe 1964-7-31 3899 Lassen Meadow above Blue Lake, Warner Mts., Modoc National Forest 1890 Comment
  CHSC4919  Dodecatheon pulchellum L. G. Bennett 1967-7-14 147 Lassen Immediate vicinity of Silver Lake. 1975 Comment
  CHSC12415  Downingia bacigalupii Anne Linda Brisk 1969-6-26 30 Lassen Growing in Papoose Meadow, 13.5 mi SW of ELBS. 1658 Comment
  CHSC57272  Downingia bacigalupii Mary Meyer 1980-7-1 Lassen Drying ditch along road in southeast area of Champs Flat. 1677 Comment
  JEPS121239  Downingia bacigalupii Lowell Ahart, John Dittes 2013-7-22 18875 Lassen Around the man-made pond, about 150 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SJSU3292  Downingia bacigalupii J. W. Tilden 1960-6-27 1525 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  UC1229824  Downingia bacigalupii John Weiler 1959-4-22 59203 Lassen 11.1 mi se Eagle Lake (along county highway A-1) Comment
  UC2047850  Downingia bacigalupii Debra Valov 2016-6-21 1296 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; 100 m up private driveway; in dry vernal pool/ditch. Comment
  UCD23274  Downingia bacigalupii Louis K. Mann, Pat Mann 1963-6-18 s.n. Lassen Road cut through sagebrush flat. 13 miles north of Susanville on road to Merrillville. Comment
  JEPS87497  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen on s.e. edge Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi. n. of Hwy. 44, e. side of R.R., which parallels the lake shore at this point) 1709 Comment
  UC1101473  Downingia bicornuta var. bicornuta Herbert L. Mason and Verne Grant 1947-7-9 13291 Lassen 5 mi e Bieber 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
  SEINET8733890 Image available Downingia elegans Helen K. Sharsmith 1955-1 4512 Lassen adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1219 Comment
  JEPS97322  Downingia insignis Vernon H. Oswald and L. Ahart 1995-8-14 7184 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  UC1188737  Downingia laeta John H. Weiler, L. Constance, and E. Molseed 1960-6-13 60164 Lassen 1.7 mi s Ravendale (at w side of U.S. Hwy 395) 1615 Comment
  UCD149942  Downingia laeta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  SBBG33614  Downingia pulchella H. and M. Dearing 1938-6-30 2224 Lassen ca. 50 mi W of Susanville 1219 Comment
  SEINET10539558  Draba David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17801 Lassen 6 mi. N of hallelujah jct. On u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC41369  Draba verna John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49203 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC108018  Draba verna var. aestivalis Lowell Ahart; John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC61140  Draba verna var. aestivalis Vernon H. Oswald; Lowell Ahart 1993-5-12 5391 Lassen Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road. 1652 Comment
  CHSC65308  Drosera anglica Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7216 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Lik ... Field redacted by CHSC, contact the data manager for more information 1859 Comment
  CAS-BOT-BC159715  Drymocallis glandulosa Louella Bass 1977-6-26 77 -5 Lassen Elysian Valley, south of Superdam. 1325 Comment
  CAS-BOT-BC157796  Drymocallis lactea var. lactea John Thomas Howell 1934-6-14 12156 Lassen Near Lost Lake, Warner Mts. 2438 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
  CHSC116194  Elatine Lowell Ahart; John Dittes 2015-7-13 20294 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116195  Elatine Lowell Ahart; John Dittes 2015-7-13 20295 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116201  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20296 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS123970  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20296 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA252429  Elatine californica R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39136 Lassen Said Valley Reservoir. Comment
  CAS-BOT-BC113618  Eleocharis acicularis George Wilson Gillett 1957-7-29 952 Lassen Mud flats along shore of Snag Lake, near iast inlet. 1850 Comment
  HSC7304  Eleocharis acicularis Fred J. Kindel 1955-6-15 Lassen Mt. Meadows Reservoir, Westwood Comment
  UC1609483  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1993-6-28 5599 Lassen NE of Poison Lake (Rd 35N04 at Aspen Well, N of Hwy 44 on NW edge of Harvey Valley) 1725 Comment
  CHSC110893  Eleocharis macrostachya Lowell Ahart; John Dittes 2012-7-9 18293 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60450  Eleocharis macrostachya Mary Ann Showers 1992-6-13 2555 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  UC1776679  Eleocharis macrostachya G. Schoolcraft 1995-5-22 2485 Lassen East of Skedaddle Ranch 1554 Comment
  UCD55301  Eleocharis macrostachya Ellen Dean; Gary Schoolcraft 2006-5-16 3130 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  UC1142940  Eleocharis palustris A. L. Hormay 1941-6-18 2 Lassen Little Harvey Valley 1676 Comment
  UCD54550  Eleocharis parvula Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2734 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
Read comments
Oct 5 2010
  UCD62907  Elymus X saundersii Beecher Crampton 1954-7-5 2061 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  CHSC111247  Elymus cinereus B. Castro; L. P. Janeway 2012-7-2 1937 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at 'Skedaddle Ranch. 1577 Comment
  CHSC115611  Elymus cinereus Lowell Ahart; John Dittes 2015-7-14 20327 Lassen On the north side of the road along 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. 1271 Comment
  JEPS123502  Elymus cinereus Wilson Collison, Jaileen Merced 2015-10-26 CA 320 -149 Lassen Head south on US-395 for 31.4 mi towards Madeline, turn left on Clarks Valley Road. Drive 10.5 mi on Clark Valley Road; take a right on Blue Lake Road. Comment
  SEINET12737887  Elymus cinereus M. Church 2016-7-26 14 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1412 Comment
  CAS-BOT-BC227482  Elymus elymoides John Thomas Howell; Gordon H. True 1973-8-1 50197 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CAS-BOT-BC227484  Elymus elymoides John Thomas Howell 1976-7-20 52000 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  CAS-BOT-BC227492  Elymus elymoides Louella Bass 1973-6-3 EU 97 Lassen Elysian Valley 1325 Comment
  UCD61421  Elymus elymoides L. D. Whitney 1935-6-27 Lassen Squaw Valley. Comment
  CHSC13858  Elymus elymoides subsp. elymoides George Ellmore 1973-6-25 735 Lassen 10 m. from water on west side of Pelican Point on West Eagle Lake. 1560 Comment
  CHSC30616  Elymus elymoides subsp. elymoides M. A. Dubin 1975-7-20 10 Lassen Eagle Lake Field Station, 200 yards north of classroom. 1569 Comment
  UC1024956  Elymus elymoides subsp. elymoides Leo Whitney 1935-6-24 3305 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC1136931  Elymus elymoides subsp. elymoides L. R. Short and J. Warren 1936-6-29 S- 461 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1820 Comment
  UC1037105  Elymus glaucus Leo Whitney 1934-7-15 3003 Lassen ca 15 mi w Eagle Lake; Lassen National Forest, Crater Lake 2133 Comment
  UC1136935  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  CAS-BOT-BC206730  Elymus glaucus subsp. glaucus Clare B. Hardham 1971-8-22 18401 Lassen Aspen Swamp, Diamond Mountain 2133 Comment
  UCD62368  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen On Gold Run Creek southwest of Susanville. 1386 Comment
  CAS-BOT-BC213802  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Ruderal in city park, Susanville - Sierra Nevada 1295 Comment
  JEPS121262  Elymus repens Lowell Ahart, John Dittes 2013-7-23 18894 Lassen About 20 feet SW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS127709  Elymus spicatus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -163 Lassen Cold Springs Road North of Bryn Marr Ranch. 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
  UCR17291  Elymus spicatus Frank C. Vasek 1975-7-11 750711- 02 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  UC1037145  Elymus trachycaulus Leo Whitney 1935-6-24 3306 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC506972  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 230 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  UCD62734  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CAS-BOT-BC204360  Elymus trachycaulus subsp. trachycaulus J. Burtt Davy 1897-6-17 s.n. Lassen Honey Lake Valley Comment
  HSC69080  Elymus trachycaulus subsp. trachycaulus Gary Schoolcraft 1980-7-28 333 Lassen Meadow E of Tule Mountain. 2043 Comment
  SEINET12757019  Elymus triticoides B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11527 Lassen Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat. 1692 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
  CHSC25297  Ephedra viridis Pauleen Broyles 1977-5-30 141 Lassen Spencer's Spring ca 8 km nne of Herlong. 1620 Comment
  CHSC36463  Ephedra viridis Jeffrey R Peak 1982-6-1 24 Lassen Ca. 18 mi e jct Hwy 139 and Ravendale Rd. Comment
  CHSC64747  Ephedra viridis Vernon H. Oswald 1995-6-7 6832 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 9.5, 4.1 mi e of Wendel, ne of Susanville. 1231 Comment
  NY70786  Ephedra viridis A. J. Cronquist 1959-6-17 8477 Lassen 6 miles northeast of Susanville 1828.8 Comment
  RSA245293  Ephedra viridis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19306 Lassen Along Hwy 395 about 4 miles E of Standish Comment
  UC766775  Ephedra viridis R. F. Hoover 1940-10-5 4671 Lassen pass between Shaffer Mt. and Warren Peak Comment
  SEINET10532271  Ephedra viridis Mary Susan Taylor 1982-5-29 Taylor 4563 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  CHSC89728  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
  HSC16337  Epilobium brachycarpum M. T. Milligan 1964-8-23 237 Lassen Above Eagles Nest on main road, Eagle Lake 1829 Comment
  UC1523739  Epilobium campestre Gary Schoolcraft 1981-9-1 571 Lassen se of Bieber (along road) 1255 Comment
  CHSC111098  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes 2012-7-9 18301 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 mile (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29945  Epilobium ciliatum subsp. ciliatum Robin L. Ondricek 1978-8-6 115 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  HSC95176  Epilobium ciliatum subsp. ciliatum Gordon Leppig, Kai Neander, Juli Neander 1997-7-26 690 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  NY1001467  Epilobium ciliatum var. ciliatum M. A. Nobs 1949-8-20 1471 Lassen Honey Lake Valley, 1 mile south of Milford Comment
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  JEPS88515  Epilobium hallianum Vernon H. Oswald and Lowell Ahart 1996-6-24 7849 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC117515  Epilobium pallidum Lowell Ahart; John Dittes 2016-7-13 21127 Lassen West of the pond and along the poor dirt road, 60 yards of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS127276  Epilobium pallidum Lowell Ahart, John Dittes 2016-7-13 21127 Lassen 60 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
  CHSC25739  Equisetum arvense John Steiner 1977-6-30 82 Lassen Along Hat Creek at the n end of Paradise Meadow. Lassen Volcanic National Park. 2134 Comment
  JEPS77524  Equisetum hyemale subsp. affine L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1978-7-20 4894 Lassen junction of Blue Lake turn-off with Likely-Patterson Guard Station rd.; Warner Mts. 1889 Comment
  CHSC27602  Equisetum laevigatum Jerry Snodgrass 1978-7-8 58 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. 1499 Comment
  CHSC4941  Equisetum laevigatum W. Lessig 1967-7-10 15 Lassen Coll. 3 1/2 mi. se Eagle Lake Biology Station, Upper Murrer's Meadow. 1524 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-BC57236  Equisetum laevigatum Alice Eastwood; John Thomas Howell 1940-6-11 7996 Lassen Bieber Comment
  CHSC91598  Eragrostis cilianensis G. Douglas Barbe 1978-8-31 2425 Lassen Modoc National Forest. Roadside, Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). 1417 Comment
  CHSC4266  Eremogone congesta K. R. Stern 1967-6-24 2422 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC91525  Eremogone congesta var. congesta L. P. Janeway 2005-7-3 8457 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
  NY1057003  Eremogone congesta var. simulans B. J. Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  SBBG124753  Eremogone congesta var. simulans C. B. Hardham 1961-6-17 7531 Lassen Hwy 395, between Alturas and Susanville 1524 Comment
  CHSC118851  Eremogone congesta var. subcongesta L. P. Janeway; B. Castro 2015-6-5 11763 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley toTuledad Canyon, 7.4 road-km south ofSurprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC72310  Eremogone congesta var. subcongesta L. P. Janeway; Glenn Clifton 1998-7-9 5730 Lassen Ridgetop saddle, 1.0 mi east of Diamond Mtn. 2215 Comment
  CAS-BOT-BC159993  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen North of Balls Canyon on U. S. Highway #395 Comment
  CAS-BOT-BC159999  Eremothera boothii subsp. alyssoides Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 7 miles south of Secret Valley C.C.C. Camp Comment
  CAS-BOT-BC160000  Eremothera boothii subsp. alyssoides Elmer I. Applegate 1934-5-4 8918 Lassen Secret Valley Comment
  UC1483875  Eremothera boothii subsp. alyssoides G. Schoolcraft 1980-5-16 234 Lassen on Wendell Hwy n kiln 1280 Comment
  CHSC100870  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  CHSC34596  Eriastrum signatum Robert A. Schlising 1978-7-1 3298 Lassen E of Eagle Lake, NE of Eagle L. Field Station. On lava flow from Black Mt. 1584 Comment
  CHSC6201  Eriastrum signatum M. West 1946-7-2 Lassen Spalding's, Eagle Lake. 1554 Comment
  CHSC64882  Eriastrum signatum Vernon H. Oswald; Lowell Ahart 1995-6-19 6894 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  UC1123886  Eriastrum signatum E. Sawyer 1935-6-29 222 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  UC526132  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen near Plumas Junction Comment
  RSA0125157  Eriastrum signatum Reino Alava 1957-7-5 1138 Lassen Along Highway no. 395, 4.25 miles S of Ravendale. Comment
  SEINET7356288  Eriastrum sparsiflorum Richard R. Halse 2004-7-21 6669 Lassen At junction of U.S. Hwy 395 and State Road A 26, ca 11 miles southeast of Milford.; 0 1274 Comment
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  JEPS69069  Eriastrum wilcoxii Walter Bryant July 1888 Lassen Comment
  SJSU8732  Eriastrum wilcoxii M. D. Fleschner 1965-7-12 Lassen by Hwy 395, 1 mi N of Milburn 1158 Comment
  UC134007  Eriastrum wilcoxii Walter Bryant July 1888 Lassen Comment
  UC1037321  Ericameria bloomeri Leo Whitney 1934-9-9 1886 Lassen near summit Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  CAS-BOT-BC287478  Ericameria greenei Ralph K. Gierisch 1968-7-11 3348 Lassen Harvey Valley, Lassen Forest 1676 Comment
  JEPS95709  Ericameria nauseosa var. oreophila Vernon H. Oswald and L. Ahart 1995-8-14 7181 Lassen T31N R15E NW1/4 Sec. 11, 4460 ft, Modoc Plateau, Sagebrush Scrub. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville 1359 Comment
  OBI5746  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-5 2401 Lassen 3/4 mi E of Termo 1646 Comment
  JEPS21495  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-27 4628 Lassen Susanville Comment
  UC1483819  Ericameria nauseosa var. speciosa G. Schoolcraft 1980-10-8 359 Lassen w side of Painters Flat 1716 Comment
  UC747216  Ericameria nauseosa var. speciosa G. Thomas Robbins 1945-10-7 2152 Lassen 2-3 mi ne of Burgess Spring (Harvey Valley, se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  CHSC78479  Ericameria suffruticosa Vernon H. Oswald 2000-7-31 9946 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  CDA18270  Erigeron G. D. Barbe 1974-8-2 1935 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET10617383  Erigeron aphanactis Jeffrey Huber 1971-6-2 Huber 133 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  UCD131606  Erigeron aphanactis Jack Major 1966-6-23 s.n. Lassen just north of Hallelujah Junction (at junction of State Highway 70 and U.S. Highway 395). 1432 Comment
  UC585081  Erigeron aphanactis var. aphanactis E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1746 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  CHSC27598  Erigeron bloomeri J. D. Prouty 1978-6-28 6 Lassen Lower Dry Lakes E of Eagle Lake. 1645 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
  CHSC89742  Erigeron bloomeri var. bloomeri L. P. Janeway 2004-6-26 8140 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
  HSC81651  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  JEPS117490  Erigeron bloomeri var. bloomeri Lowell Ahart, John Dittes 2010-7-31 17010 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  RSA768025  Erigeron bloomeri var. bloomeri L. Ahart, John Dittes 2010-7-31 17010 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1511 Comment
  UC1228141  Erigeron bloomeri var. bloomeri Beecher Crampton 1960-6-18 5723 Lassen vicinity Blue Lake Ranch; southern Warner Mountains Comment
  UC1368785  Erigeron bloomeri var. bloomeri John L. Strother 1970-5-23 952 Lassen about 6 mi n Honey Lake 1280 Comment
  UC1536740  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-27 559 Lassen near top Hot Spring Mt. 1828 Comment
  UCR45383  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Road just south of bridge over Ash Creek, & c. 16 mi. SE of Adin; 2.5 mi. SE of junction with main road 1555 Comment
  CHSC5207  Erigeron breweri 1944-6-30 Lassen Eagle Lake. Grasshopper Valley. 1584 Comment
  CAS-BOT-BC294905  Erigeron chrysopsidis var. austiniae G. Schoolcraft 1988-6-7 1811 Lassen About 14 air mi. NE of Ravendale 1737 Comment
  POM33001  Erigeron divergens Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA795322  Erigeron divergens L. Ahart, John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  SEINET5708465 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  UC1536893  Erigeron divergens G. H. True Jr. 1936-6-21 516 Lassen roadside se Litchfield; Honey Lake Valley 1219 Comment
  CAS-BOT-BC295978  Erigeron divergens Gary Schoolcraft 1984-9-4 1372 Lassen Fredomyer Mtn. 1737 Comment
  UC55075  Erigeron divergens Milo S. Baker 1898-7-12 306 Lassen The Bench Comment
  UC1776657  Erigeron eatonii var. nevadincola G. Schoolcraft 1998-6-30 2743 Lassen N slope of Ft. Sage Mountains 1950 Comment
  CHSC68734  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1997-5-27 8520 Lassen North of Susanville of Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.3 mi northeast of Hwy. 139. 1725 Comment
  HSC28860  Erigeron eatonii var. plantagineus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19253 Lassen Harvey Valley near Cone Springs 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
  RSA702593  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1118206  Erigeron eatonii var. plantagineus A. Simontacchi 1940-6-4 801 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle 1828 Comment
  RSA0049607  Erigeron elegantulus Dean Wm. Taylor 2012-6-7 21227 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  UC31465  Erigeron elegantulus Mrs. C. C. Bruce 1892-6-1 2182 Lassen Madaline Plains Comment
  CHSC105240  Erigeron filifolius var. filifolius Lowell Ahart; John Dittes 2010-7-31 17008 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC87110  Erigeron filifolius var. filifolius L. P. Janeway 2001-6-20 7201 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  RSA739690  Erigeron filifolius var. filifolius John Dittes, Scott Chamberlain 2004-6-28 s.n. Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-miles east of Plumas County line. 1512 Comment
  UC584244  Erigeron lassenianus var. lassenianus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2264 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties) Comment
  CHSC72299  Erigeron linearis L. P. Janeway; Glenn Clifton 1998-7-9 5729 Lassen Ridgetop saddle 1.0 mi east of Diamond Mtn. 2215 Comment
  HSC63770  Erigeron linearis Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  CAS-BOT-BC295958  Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  JEPS22799  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley Lassen Forest, Grass Valley 1700 Comment
  JEPS89669  Erigeron pumilus var. intermedius Dean Wm. Taylor with Glenn Clifton 1990-6-12 10883 Lassen Ash Valley along Ash Creek at the crossing of Road 527 (Forest Road 39N08), Modoc Plateau Ash Creek; Modoc Plateau, Ash Valley, Ash Creek 1554 Comment
  UC31462  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC506996  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley 1700 Comment
  UC584286  Erigeron tener G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2285 Lassen summit Thompson Peak (s of Janesville) 2346 Comment
  SEINET530700  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  SEINET530701  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  UCR92116  Eriogonum baileyi var. baileyi G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  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
  OBI48168  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Rav endale 1311 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
  RSA236684  Eriogonum collinum A. J. Cronquist, A. H. Holmgren 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles NE of Susanville 1616 Comment
  UC1537297  Eriogonum collinum Gordon H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1493 Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  CHSC68899  Eriogonum douglasii var. meridionale Vernon Oswald; Lowell Ahart 1997-6-24 8639 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  UC1736000  Eriogonum douglasii var. meridionale Dean W. Taylor 1992-5-7 12544 Lassen Willow Creek drainage, ca. 0.4 road miles from Highway 139 on road to Smith Flat, 1524 Comment
  UCSC005349  Eriogonum elatum Randall Morgan 1998-7-20 3319 Lassen Hwy 144 west of Susanville Comment
  CAS-BOT-BC255743  Eriogonum elatum var. villosum Clare B. Hardham 1969-8-28 17459 Lassen West of Janesville, Sierra Nevada Comment
  SEINET5330338  Eriogonum inflatum var. inflatum F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  CAS-BOT-BC259389  Eriogonum luteolum Ernest C. Twisselmann 1961-9-21 6571 Lassen Harvey Valley Road, ca. 14 miles south of Pitville [Pittville] 1219 Comment
  CHSC64805  Eriogonum maculatum Vernon H. Oswald 1995-6-7 6833 Lassen Wendel Rd. (Lassen 320) at milepost 9.5, 4.1 mi e of Wendel, ne of Susanville. 1231 Comment
  CHSC65157  Eriogonum maculatum Vernon H. Oswald; Lowell Ahart 1995-7-5 6961 Lassen North of Honey Lake on Smoke Creek Ranch Rd., 1.2 mi w of the Nevada-California state line. 1335 Comment
  CAS-BOT-BC267345  Eriogonum marifolium var. marifolium John Thomas Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  RSA518445  Eriogonum microtheca var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  JEPS126478  Eriogonum microthecum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-18 CA 350 -069 Lassen Directly off Horse Lake Road, on either side of the road. Comment
  CAS-BOT-BC268688  Eriogonum microthecum var. laxiflorum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50656 Lassen Summit ridge of Diamond Mt. 2346 Comment
  NY281555  Eriogonum microthecum var. laxiflorum E. K. Balls 1952-10-10 18143 Lassen In Northern Juniper Woodland, 8 mi. s.e. of Ravendale, Hwy 395, between Susanville and Alturas. 1280.2 Comment
  NY282159  Eriogonum microthecum var. laxiflorum R. F. Hoover 1940-9-28 4636 Lassen Canyon north of Leavitt. Comment
  SEINET245664  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mi west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  CAS-BOT-BC266365  Eriogonum nudum var. deductum H. D. Ripley; R. C. Barneby 1943-6-13 5700 Lassen South of Milford 1569 Comment
  CAS-BOT-BC261445  Eriogonum nudum var. nudum Clare B. Hardham 1969-8-28 17442 Lassen West of Janesville Comment
  CHSC13456  Eriogonum nudum var. pubiflorum J. Pitts 1972-6-25 272 Lassen 30 yds. e of Papoose Creek on Road 4.25, on n side of road. S of Eagle Lake 1/4 mi. Comment
  CHSC13879  Eriogonum nudum var. pubiflorum J. Grove 1973-7-19 96 Lassen Collected on Big Valley Mountain 5 mi. W of Nubieber. 1310 Comment
  CHSC72220  Eriogonum ovalifolium var. depressum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  CHSC64845  Eriogonum prociduum var. prociduum Vernon H. Oswald 1995-6-26 6939 Lassen Modoc Plateau. Spooner Rd. ca. 0.3 - 0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  CAS-BOT-BC272625  Eriogonum spergulinum var. reddingianum John Thomas Howell 1934-6-14 12123 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  RSA713122  Eriogonum spergulinum var. reddingianum L. P. Janeway, B. Castro 2005-7-10 8483 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 and 28N02) and Road 28N01. 1859 Comment
  UCR248329  Eriogonum sphaerocephalum Elizabeth A. Kempton 2007-8-15 512 Lassen Near Basehill landfill 1282 Comment
  NY283149  Eriogonum sphaerocephalum var. sphaerocephalum N. H. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km. (11.5 miles) airline distance east-southeast of Ravendale 1830 Comment
  SEINET11261384  Eriogonum sphaerocephalum var. sphaerocephalum Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km (11.5 mi) airline distance east-southeast of Ravendale.; 0 1830 Comment
  CHSC13650  Eriogonum strictum var. anserinum M. S. Taylor 1974-6-20 256 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1554 Comment
  JEPS93829  Eriogonum strictum var. anserinum Vernon H. Oswald and Lowell Ahart 1998-6-4 9147 Lassen s of Constantia (Spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  NY762353  Eriogonum strictum var. anserinum J. T. Howell 1934-7-7 12478 Lassen Harvey Valley Comment
  CAS-BOT-BC267897  Eriogonum umbellatum John Thomas Howell 1973-7-10 49772 Lassen Near Westwood, Sierra Nevada 1554 Comment
  SBBG64170  Eriogonum umbellatum D. Crofton-Atkins 1931-6-7 Lassen Susanville 1310 Comment
  CAS-BOT-BC267887  Eriogonum umbellatum Clarence R. Quick 1962-8-3 62 -89 Lassen Delasmutt Ranch, Hw. 44, nr. Susanville-Old Station, along dirt road to Blacks Mt. E.F. Hdqtrs. 1615 Comment
  RSA0025577  Eriogonum umbellatum John F. Emmel 1996-7-14 1427 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. Comment
  CHSC4436  Eriogonum umbellatum var. modocense K. R. Stern 1967-7-1 2461 Lassen Ca. 16 mi. NE of Susanville. State Hwy 139. Comment
  CHSC59788  Eriogonum umbellatum var. modocense Mary Meyer 1980-5-7 Lassen Scattered beneath sagebrush on Pete's Mesa. 1447 Comment
  CHSC6227  Eriogonum umbellatum var. modocense A. Santos 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  CHSC99123  Eriogonum umbellatum var. modocense Lowell Ahart; John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  RSA700052  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. 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
  RSA700233  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7203 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
  CHSC93680  Eriogonum umbellatum var. nevadense Lowell Ahart; John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  UC584410  Eriogonum umbellatum var. nevadense G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2310 Lassen w Milford (crest of range head of Stony Ridge); Stony Ridge 1930 Comment
  CAS-BOT-BC262354  Eriogonum vimineum G. Schoolcraft 1993-6-29 2306 Lassen Ash Valley RNA/ACEC at south end of T in Rd. 1539 Comment
  CAS-BOT-BC262362  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 miles south of Omira Comment
  CAS-BOT-BC262364  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  CDA18387  Eriogonum vimineum G. D. Barbe 1978-8-31 2426 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  CHSC117539  Eriogonum vimineum Lowell Ahart; John Dittes 2016-7-13 21132 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  POM105137  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  UC412790  Eriogonum vimineum Franklin P. Nutting Lassen Adobe flat on n side Dixey Mts. Dixey Mts. Comment
  CAS-BOT-BC262356  Eriogonum vimineum Margaret Williams; Louella Bass 1972-10-22 EV 1 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC262366  Eriogonum vimineum David D. Keck 1930-7-23 951 Lassen Susanville 1280 Comment
  CAS-BOT-BC300339  Eriophyllum Mike Vasey 1990-6-30 9058 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CDA20364  Eriophyllum lanatum D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 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
  JEPS103221  Eriophyllum lanatum var. achilleoides G. Schoolcraft 1991-7-30 2199 Lassen E. slope of widow mountain 1859 Comment
  SEINET3132728  Eriophyllum lanatum var. integrifolium J. L. Strother 1970-5-23 956 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  UC90245  Eriophyllum lanatum var. integrifolium T. S. Brandegee 1892-7-26 Lassen Milford Comment
  JEPS124539 Image available Erodium cicutarium B. Corwin 1964-6-30 110 Lassen 19 miles no. of junction of rte. 395 and Alt. 40 in rte. 395, 100 yds before Western Pacific Railroad crosses road. 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
  UC1594637  Eryngium alismifolium Vernon H. Oswald and Lowell Ahart 1992-7-16 5104 b Lassen Long Lake on s. side of Hwy. 44 between Old Station and Susanville (1.2 mi. s.e. of County Rd. A21); Long Lake 1745 Comment
  CHSC71082  Erysimum capitatum var. capitatum Vernon H. Oswald; Lowell Ahart 1998-5-22 9117 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  CHSC91311  Erythranthe arvensis Lowell Ahart; John Dittes 2005-6-1 11900 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CHSC118855  Erythranthe guttata L. P. Janeway; B. Castro 2015-6-5 11770 Lassen Great Basin, Modoc Plateau. Along County Road 512 16.9 road-km south from Surprise Valley Road towards Tuledad Canyon; in a small northwestern drainage into Post Canyon. 1837 Comment
  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
  CHSC5904  Erythranthe guttata M. West 1946-6-15 Lassen So. end Eagle Lake. 1584 Comment
  CHSC7754  Erythranthe guttata Beverly J. Wise 1968-8-28 108 Lassen Edge of Crazy Harry Creek where crossed by Las. Co. Rd. 230, 6 mi. north of Hwy 36. 1645 Comment
  CAS-BOT-BC151473  Erythranthe latidens James Jokerst 1983-7-23 1872 Lassen Grasshopper Valley Quad., near Madeline Plains 1614 Comment
  SD7074  Erythranthe lewisii Mrs. R. M. Austin 1882-8-7 Lassen King's Valley 2133 Comment
  SD7093  Erythranthe lewisii Austin 1880-1 Lassen Spanish Peak Comment
  SEINET3836920 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Prattville, Clear Creek 1524 Comment
  SFV18615  Eschscholzia caespitosa T. W. Nelson, J. P. Nelson 1990-7-14 8777 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  RSA445591  Eschscholzia californica J. D. Detzer, M. Sacks 1977-7-28 35 Lassen 0.5 km S of Hwy 395, 4 miles W of Milford. 1386 Comment
  RSA59555  Eschscholzia californica E. K. Balls 1950-5-22 14828 Lassen 1 mile S of Milford, Hwy 395. 1280 Comment
  RSA149124  Eschscholzia californica var. crocea I. L. Wiggins, Dorothy B. Wiggins 1961-6-16 16531 Lassen Along Highway 299, overlooking Big Valley 1250 Comment
  UC1313019  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen 4 mi. s.w. Adin (Frosty Acres Ranch at end of Albaugh Rd., 0.6 mi. w. of its junction w/ Bassett Rd. (ca. 2 mi. s. of U.S. Hwy. 299)); n. Lassen Co., Frosty Acres Ranch 1280 Comment
  SEINET9594781  Euphorbia crenulata D. W. Taylor 2012-7-18 21273 Lassen Along Hwy 44, pumice flat nestled in the cones ca 2 miles S of the S end of Poison Lke. 1783 Comment
  RSA324236  Euphorbia spathulata A. Tiehm, James Young, Raymond Evans 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  CHSC117511  Euphorbia virgata Lowell Ahart; John Dittes 2016-7-13 21118 Lassen Along the drainage, about 100 yards south of the pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  JEPS127347  Euphorbia virgata Lowell Ahart, John Dittes 2016-7-13 21118 Lassen 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CAS-BOT-BC312102  Eurybia integrifolia Milo S. Baker 1894-7-30 s.n. Lassen Silver Lake Comment
  UC29863  Eurybia integrifolia Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC312106  Eurybia integrifolia Alice Eastwood 1912-8-22 1883 Lassen Morgans Springs, Lassen Butte Region Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  CAS-BOT-BC278429  Festuca idahoensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CAS-BOT-BC278435  Festuca idahoensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49459 Lassen Elysian Valley, west of Janesville 1325 Comment
  POM112032  Festuca idahoensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1024801  Festuca idahoensis Leo Whitney 1935-6-23 3294 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1136814  Festuca idahoensis George A. Fischer and Irwin H. Johnson 1933-7-12 F 216 Lassen Lassen National Forest 1722 Comment
  UC53432  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
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Jun 24 2009
  CAS-BOT-BC278932  Festuca rubra John Thomas Howell 1934-7-6 12458 Lassen Harvey Valley Comment
  JEPS28300  Festuca rubra George W. Gillett 1957-7-28 923 Lassen upper end Butte Lake (trail to Widow Lake above junction w/ Snag Lake trail, dry wash 100 yds. above trail junction); Lassen Volcanic Nat'l Park, Butte Lake 1859 Comment
  UC1024686  Festuca rubra Leo Whitney 1933-8-3 2159 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCD66348  Festuca rubra L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  CHSC66397  Frangula rubra Vernon H. Oswald; Lowell Ahart 1996-6-17 7779 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Shrub growing in openings on a brushy slope on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  HSC26684  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19220 Lassen 3 mi. N of Westwood Comment
  CHSC7658  Fritillaria pudica Beverly J. Wise 1969-3-29 143 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  RSA59761  Fritillaria pudica E. K. Balls 1950-5-18 14768 Lassen Above Ash Creek Public Camp., off rd. from Adin to Madeline. 1616 Comment
  SEINET3886822  Fritillaria recurva J. P. Smith, J. O. Sawyer 1972-5-6 5235 a Lassen Lassen National Forest; Boundary Campground on State Route 89 south of Burney.; 0 1067 Comment
  CHSC7720  Galium asperrimum Beverley J. Wise 1969-5-18 96 Lassen 18.2 mi. East of Susanville on Co. Rd 216 off Lassen Co. Rd. 215. 1554 Comment
  CHSC59565  Galium bifolium Mary Meyer 1980-7-20 518 Lassen On west side of Fredonyer Peak. 2377 Comment
  CHSC68871  Galium bifolium Vernon Oswald; Lowell Ahart 1997-6-24 8606 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  JEPS107800  Galium boreale subsp. septentrionale Lowell Ahart, John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  CHSC60406  Galium grayanum Mary Ann Showers 1992-6-28 2701 Lassen Lassen Volcanic National Park. Andesite cliffs west of Soda Lake and below tarn at base of north facing cirque between Pilot Pinnacle and Mt. Diller. 2438 Comment
  UC157915  Galium multiflorum Milo S. Baker 1890-1 Lassen Milford 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
  UCD121940  Galium trifidum subsp. subbiflorum John Thomas Howell 1959-9-23 34886 Lassen North end of Juniper Lake. 2057 Comment
  RSA144899  Gayophytum heterozygum J. W. MacSwain 1959-8-12 59 -148 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  NY999655  Gayophytum ramosissimum W. W. Eggleston 1910-9-3 6301 Lassen Vicinity of Doyle Station 1240 Comment
  JEPS31405  Gentiana newberryi G. S. Crew and C. S. Robinson 1927-7-15 68 Lassen Bogard Ranger Station, sw Lassen Co. Lassen Forest 1737 Comment
  SEINET8586424  Gentiana newberryi C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1037192  Gentiana newberryi Leo Whitney 1934-7-20 1505 Lassen ca 14 mi w Eagle Lake (Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  POM253026  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen About a mile east of Westwood. 1524 Comment
  JEPS61452  Geranium viscosissimum Brown and Wieslander 1922-7-24 11 Lassen Martin Springs Eagle Lake Comment
  UC773888  Geranium viscosissimum L. R. Short and Wm. Gansberg 1936-6-12 S- 433 Lassen Burgess Spring Experiment Range Lassen Forest 1807 Comment
  POM161476  Geum macrophyllum Franklin Nutting 1894-7-12 s.n. Lassen Pine Creek. Comment
  CAS-BOT-BC143569  Geum triflorum Clarence Quick 1963-7-12 63 -34 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  JEPS114756  Geum triflorum Lowell Ahart, John Dittes 2008-6-19 14872 Lassen Along a small wash, 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
  SEINET200250  Gilia capillaris Herbert L. Mason 1955-7-31 14643 Lassen Near Westwood Junction (railroad station 15mi west of Susanville) Comment
  UCD55161  Gilia inconspicua Ellen Dean 2006-5-15 3049 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  CHSC11771  Gilia modocensis Wayne O. Baum 1971-6-28 71 -4 Lassen S. slope of Gallatin Peak. 2042 Comment
  JEPS107831  Gilia modocensis Lowell Ahart, John Dittes 2005-6-2 11989 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
  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
  UC52852  Gilia sinuata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee , Amadee (Amedee?) (Honey Lake Valley) Comment
  HSC95215  Glyceria borealis Gordon Leppig 1998-7-13 974 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  CHSC77264  Glyceria elata G. Schoolcraft 1997-7-30 2614 Lassen W facing slope of Diamond Mtn. 1950 Comment
  CAS-BOT-BC302594  Gnaphalium palustre John Thomas Howell; Gordon H. True 1973-8-1 50211 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  CHSC99290  Gnaphalium palustre Lowell Ahart; John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS114877  Gnaphalium palustre Lowell Ahart, John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  CAS-BOT-BC302592  Gnaphalium palustre George W. Gillett 1957-9-4 1124 Lassen Lassen Volcanic National Park. Widow Lake 2072 Comment
  CAS-BOT-BC302596  Gnaphalium palustre Clare B. Hardham 1971-8-22 18421 Lassen Diamond Mountain, north slope 2225 Comment
  RSA0011563  Gnaphalium palustre R. F. Thorne, Larry E. DeBuhr 1975-8-22 46989 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC60414  Gratiola ebracteata Mary Ann Showers 1992-6-13 2543 Lassen Shoreline at western end of Widow Lake. Lassen Volcania National Park. 2072 Comment
  CHSC117760  Gratiola heterosepala Virginia Dains; Joanne Crawford 2016-6-9 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km southeast of Horse Lake, 23 km northwest of Shaffer Mtn. 1470 Comment
  CHSC5232  Grayia spinosa J. E. Wolf 1946-6-28 Lassen Eagle Lake. Horse Lake. 1554 Comment
  CHSC7711  Grayia spinosa Beverley J. Wise 1969-5-18 7 Lassen 13.4 mi. east of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  UC585073  Grayia spinosa E. B. Babcock and G. L. Stebbins Jr. 1936-6-8 1777 Lassen 4 mi. s. Ravendale (n. end Secret Valley); n. end Secret Valley 1371 Comment
  CHSC37692  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  SEINET5709434 Image available Grindelia squarrosa Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7709 Lassen Willow Creek. Collected along CA 139.; Willow Creek 1428 Comment
  SEINET12330175  Gymnosteris parvula M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -2 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale, 0.1 mi W Calif-Nev line Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  UC1587098  Hackelia californica G. Schoolcraft 1991-7-30 2197 Lassen e slope of Widow Mountain 1859 Comment
  CAS-BOT-BC231155  Hackelia cusickii Mrs. A S. Baldwin 1930-5-1 s.n. Lassen Coyote Creek lava bed Comment
  UC1602195  Halogeton glomeratus Pryer and Fix 1948-8-17 Lassen Herlong Comment
  UCD165252  Halogeton glomeratus John M. Tucker 1950-7-26 1978 Lassen Southeastern part of county; Herlong, CA, Herlong Ordnance Depot; (Exact location unknown, coordinates estimated by label maker). Comment
  CHSC12485  Hastingsia alba Carol Weld 1969-6-26 44 Lassen 7.8 miles S. W. of Eagle Lake Field Station. 1584 Comment
  JEPS124644 Image available Helianthus annuus M. R. Kempf 1965-7-12 284 Lassen [...] miles south of Milburn on Hwy 395- Sierra Valley. Comment
  JEPS124645 Image available Helianthus annuus Michael D. Fleschner 1965-7-12 1965 -110 Lassen 2 miles south of MIlford, on Hwy 395. Comment
  CHSC118791  Helianthus cusickii L. P. Janeway; B. Castro 2015-6-5 11755 Lassen Great basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CAS-BOT-BC305660  Helianthus cusickii Philip A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale 1310 Comment
  UCD142986  Heliotropium curassavicum Richard R. Halse 2010-8-25 8086 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  HSC68922  Heliotropium curassavicum var. oculatum Gary Schoolcraft 1980-7-10 303 Lassen E shore of Eagle Lake 1555 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
  CHSC7686  Hesperochiron californicus Beverley J. Wise 1969-4-20 45 Lassen 14.6 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1463 Comment
  UC1037238  Hesperochiron californicus Leo Whitney 1935-6-20 3253 Lassen Lassen Nat'l Forest, Fruit Grower's Supply Company, Camp 10 Comment
  CHSC5258  Hesperochiron pumilus J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek near Eagle Lake. 1584 Comment
  CAS-BOT-BC180030  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Ash Creek Public Camp, off rd. from Adin to Madeline. Comment
  CHSC4793  Hesperolinon micranthum R. Carter 1967-6-29 570 Lassen On rd to Murrer's Meadow. Eagle Lake. 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
  UC1601274  Hesperolinon micranthum Leo Whitney 1934-9-5 1889 Lassen between Susanville and Westwood; Lassen National Forest, Fredonyer Pass 1706 Comment
  UC17262  Hesperolinon micranthum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  RSA127454  Hesperolinon micranthum Peter H. Raven, Otto T. Solbrig 1958-6-17 13300 Lassen 8.0 miles north of Madeline along Unites States Highway 395. Comment
  SEINET10936270  Hesperolinon micranthum Mary Susan Taylor 1974-1 Taylor 272 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC280680  Hesperostipa comata John Thomas Howell 1934-6-10 11841 Lassen Near Plumas Junction Comment
  JEPS87469  Hesperostipa comata Vernon H. Oswald and Lowell Ahart 1993-6-14 5542 Lassen n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  UCD85293  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an artemisia flat, along US Hwy. 395, 1 mile east of Johnstonville. Comment
  CHSC23522  Hesperostipa comata subsp. intermedia Wayne O. Baum 1971-7-12 71 -67 Lassen E. slope of Gallatin Peak. 1950 Comment
  RSA783327  Heterotheca villosa var. minor R. R. Halse 2010-8-26 8091 Lassen Along State Hwy 70 at Beckwourth Pass ca. 4.3 miles west of its junction with US Hwy 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  NY783478  Heuchera rubescens G. Schoolcraft 1982-6-23 728 Lassen Fort Sage Mountains 1828.8 Comment
  NY783479  Heuchera rubescens G. Schoolcraft 1983-6-28 1037 Lassen Wendel Canyon 1645.9 Comment
  CAS-BOT-BC312419  Hieracium albiflorum John Thomas Howell; Gordon H. True 1973-7-31 50025 Lassen Road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  CHSC98320  Hieracium greenei B. Castro; L. P. Janeway 2005-7-10 1505 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  CAS-BOT-BC318713  Hieracium horridum Wm. Bridge Cooke 1938-9-17 11703 Lassen Canyon below Horse Camp, Mount Shasta 2133 Comment
  UCD107499  Hieracium scouleri Tim Kuhn 2006-7-19 45 Lassen Eagle Lake Ranger District. Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  JEPS105682  Hieracium scouleri L. P. Janeway 2001-6-20 7196 Lassen along 22 Road about 1.8 km W of Black Hole, about 11.9 km N-NE of Harvey Mountain 460 Comment
  CHSC66720  Hieracium scouleri var. nudicaule Vernon H. Oswald; Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road. 2011 Comment
  CAS-BOT-BC150128  Holodiscus microphyllus var. glabrescens P. Monnet 1913-7-4 802 Lassen Hot Springs Peak Comment
  POM91032  Holodiscus microphyllus var. glabrescens Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC41842  Hordeum brachyantherum subsp. brachyantherum P. V. Caldwell 1972-7-12 273 Lassen 300 meters from Eagle Lake on Papoose Creek. 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
  JEPS97307  Hordeum jubatum Vernon H. Oswald and L. Ahart 1995-8-14 7189 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  RSA123433  Hordeum jubatum H. S. Yates 1936-8-11 6075 Lassen Baxter Creek 1280 Comment
  SEINET10591500  Hordeum jubatum Vernon H. Oswald, Lowell Ahart 1995-8-14 Oswald 7189 Lassen T33N R14E S2 NE1/4, Modoc Plateau, sagebrush scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Growing in moist soil along the margin of a large roadside pond. 1646 Comment
  UC188782  Hordeum marinum subsp. gussoneanum Milo S. Baker Lassen n side Dixie Mountains; n side Dixie Mountains Comment
  UCD85785  Hordeum marinum subsp. gussoneanum A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3368 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  UCD86237  Hordeum murinum subsp. glaucum John Thomas Howell 1973-7-10 49801 Lassen Susanville. In city park. 1295 Comment
  CAS-BOT-BC537888  Horkelia tridentata var. flavescens A. M. Vollmer; L. Beane 1953-7-1 59 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC213002  Hosackia crassifolia Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC213004  Hosackia crassifolia John Thomas Howell; Gordon H. True 1973-7-31 50036 Lassen In areas of granitic rock on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  CHSC66387  Hosackia oblongifolia var. oblongifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7818 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marshy pool at the 6.0 mile post of Devils Corral Trailhead. 1420 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
  UC1069096  Hydrophyllum capitatum var. alpinum A. Simontacchi 1940-5-10 692 Lassen 4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC614681  Hydrophyllum capitatum var. alpinum L. Constance 1938-6-10 2325 Lassen 0.5 mi w Fredonyer Pass 1676 Comment
  JEPS88401  Hypericum formosum var. scouleri Vernon H. Oswald and Lowell Ahart 1996-8-1 8127 Lassen ca. 2 mi. n. Dyer Mt. Lookout (Forest Rd. 28N56 (D-Line), on downhill side of rd., s.-s.w. of Westwood) 1737 Comment
  SEINET11991644  Hypericum formosum var. scouleri Unknown 1978-1 16 Lassen Papoose Creek, S of Gallatin Beach on Eagle L 1585 Comment
  UCD115194  Idahoa scapigera R. N. Raynor 1940-4-16 s.n. Lassen Big Valley. Comment
  NY52523  Iliamna bakeri G. Schoolcraft 1983-8-3 1129 Lassen 5 miles w of Madeline 1767.8 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
  UC879819  Ipomopsis aggregata C. L. Hitchcock 1940-5-26 6601 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River Comment
  CHSC68754  Ipomopsis congesta subsp. congesta Vernon H. Oswald; Lowell Ahart 1997-5-27 8493 Lassen West side of Hwy. 139 south of Willow Creek Guard Station, 0.9 mi south of Forest Road 38N04 to Coyote Flat. Along the road. 1577 Comment
  JEPS94604  Ipomopsis congesta subsp. congesta Vernon H. Oswald and Lowell Ahart 1997-5-27 8493 Lassen w side of Hwy 139 s Willow Creek Guard Station (0.9 mi s of Forest Rd. 38N04 to Coyote Flat) 1577 Comment
  JEPS95973  Ipomopsis congesta subsp. congesta Vernon H. Oswald and L. Ahart 1999-6-9 9745 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  CHSC64801  Ipomopsis polycladon Vernon H. Oswald 1995-5-24 6769 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  UC773903  Ipomopsis tenuituba L. R. Short 1936-6-25 S- 412 Lassen Burgess Spring Experiment Range 1865 Comment
  CHSC107328  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
  CHSC66228  Isoetes nuttallii Vernon H. Oswald; Lowell Ahart 1996-6-24 7848 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagel Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  RSA0025411  Isoetes nuttallii Forrest Freund 2013-5-23 193 Lassen HWY 44. Roadside depression. Along the outer edge of water pool in open patches. 1744 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
  CHSC77255  Isolepis G. Schoolcraft 1997-8-4 2675 Lassen W of Willow Creek Valley. 1554 Comment
  CHSC7635  Iva axillaris Beverley J. Wise 1969-5-23 23 Lassen 34.5 mi. E of Susanville on La. Co. Rd. 320. 1249 Comment
  CHSC27587  Iva axillaris subsp. robustior Robert A. Schlising 1978-7-15 3318 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  RSA126721  Iva axillaris subsp. robustior Peter H. Raven, Otto T. Solbrig 1958-6-17 13265 Lassen Along Hwy 395, 11.8 miles NE of Litchfied Comment
  UC1924587  Juncus Debra Valov 2006-5-28 2006017 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC30562  Juncus balticus Sori H. Shad 1970-7-1 5 Lassen Found on the side of spring above Gallaten Beach. 2438 Comment
  UCR244138  Juncus balticus Jim Andre, G. L. Clifton 1993-6-9 19700 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
  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
  SEINET3877676  Juncus bufonius Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9467 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi) south of Madeline.; 0 1620 Comment
  CHSC60863  Juncus bufonius var. occidentalis Vernon H. Oswald; Lowell Ahart 1993-6-28 5598 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  POM261438  Juncus bufonius var. occidentalis Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville. Comment
  RSA129757  Juncus confusus L. R. Short, J. Warren 1936-6-10 S- 418 Lassen MDM, Burgess Spr. Exp. Range. 1857 Comment
  UC1601859  Juncus ensifolius Baker and Nutting 1894-7-24 Lassen Eagle Lake Comment
  CHSC117203  Juncus hemiendytus var. hemiendytus Lowell Ahart; John Dittes 2016-6-7 20991 Lassen West edge of pond, 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. 1289 Comment
  CAS-BOT-BC245809  Juncus hemiendytus var. hemiendytus Alice Eastwood; John Thomas Howell 1940-6-11 s.n. Lassen SW of Nubieber, Big Valley Mts. Comment
  JEPS28712  Juncus howellii George W. Gillett 1957-7-29 943 Lassen along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  RSA201267  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UC1100948  Juncus mexicanus Malcolm A. Nobs and S. Galen Smith 1947-8-1 8230 Lassen irrigation ditch running sw into State Fish & Game nesting area on w end of Section 19 Madeline Plain Comment
  HSC95327  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1601784  Juncus nevadensis Baker and Nutting 1894-7-3 Lassen Dixie Creek Comment
  HSC22875  Juncus orthophyllus John Pratt 1970-6-13 11 Lassen 1677 Comment
  JEPS107986  Juncus tiehmii Lowell Ahart, John Dittes 2005-6-2 11959 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  CAS-BOT-BC279914  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley 1740 Comment
  CHSC106359  Juncus trilocularis Lowell Ahart; John Dittes 2010-7-31 17026 Lassen About 20 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC117193  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 20990 Lassen 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC13798  Juniperus occidentalis Cathy Crittenden 1970-7-8 26 Lassen About 300 yds. From five corners on road to Mahogany Lake. 1767 Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  HSC1267  Juniperus occidentalis L. H. Myers 1963-4-10 40 Lassen 1.0 mi. S of Janesville 1280 Comment
  UC1134300  Juniperus occidentalis A. Simontacchi 1940-6-5 820 Lassen 8.0 mi wnw of Harvey Valley Ranger Station; Halls Flat Quad., Lassen National Forest Comment
  UCD133775  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen 5 miles from Susanville; dry hills on Gold Run Creek. 1310 Comment
  UCD133784  Juniperus occidentalis K. M. Meyer; A. Townesmith 2007-7-19 132 Lassen Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek. 1459 Comment
  RSA235556  Juniperus occidentalis var. occidentalis Noel Holmgren, Patricia K. Holmgren 1970-7-28 4625 Lassen North end of Petersen Mountain, near US 395, 8 miles north of Halleluja Junction (junction with Calif. 70). 1524 Comment
  RSA719706  Juniperus occidentalis var. occidentalis Michael A. Vincent, K. Levings 2006-7-29 12922 Lassen Along Rt. 395 pull-off, 3.1 miles north of Rt. 70, 7.7 miles north of Sierra County line Comment
  SEINET11056685  Juniperus occidentalis var. occidentalis D. Charlet 1994-7-6 1923 Lassen Susanville, corner of Main and Fair Streets. 1292 Comment
  SEINET11056886  Juniperus occidentalis var. occidentalis D. Charlet 1993-7-13 1582 Lassen Fort Sage Mountains, along road W of OHV trailhead. 1450 Comment
  UCR3786  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 04 Lassen 5.2-5.4 mi north of the junction of US Hwy 395 w/ Calif. Hwy 70 (alt. US Hwy 40) 1479 Comment
  RSA121075  Kelloggia galioides L. R. Short, D. Gish 1936-6-10 S- 379 Lassen Burgess Spr. Exp. Range. Lassen Forest. (MDM?) 1814 Comment
  UCD18974  Kelloggia galioides Raymond D. Ratliff 1965-7-29 34 Lassen Lassen National Forest, Lower Pine Creek Allotment (LPC 13-2). 1719 Comment
  UC7389  Krascheninnikovia lanata J. Burtt Davy Jun 17 1897-Jun 24 1897 3327 Lassen Honey Lake Valley 1219 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
  CHSC66719  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1996-8-1 8116 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  UC891450  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen about a mile e of Westwood Comment
  UCR67465  Lactuca saligna George K. Helmkamp 1990-9-23 G- 13 Lassen north of Ravendale 1677 Comment
  RSA0009789  Lactuca tatarica var. pulchella Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC341484  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CAS-BOT-BC341486  Lagophylla ramosissima John Thomas Howell 1975-7-23 51391 Lassen Susanville 1295 Comment
  JEPS117573  Lagophylla ramosissima Lowell Ahart, John Dittes 2010-7-31 16997 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS38999  Lagophylla ramosissima W. L. Jepson 1918-8-2 7776 Lassen Bedswith Pass 1463 Comment
  POM204133  Lagophylla ramosissima J. T. Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles S of Susanville. Comment
  UC1924221  Lagophylla ramosissima Debra Valov 2004-6-8 2004254 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 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
  JEPS67993  Lappula redowskii W. L. Jepson 1918-8-2 7765 Lassen Beckwith Pass 1463 Comment
  RSA0045638  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about, 5.0 miles (air) northeast of Bieber. 1262 Comment
  UC1609230  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  UC30620  Layia glandulosa M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. 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
  RSA170169  Lemna minor W. L. Jepson 1918-8-16 8000 Lassen Merrillville 1524 Comment
  SD117142  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek, at bridge on Highway 139, approximately10 miles north of Susanville. 1509 Comment
  SFV1437  Lepidium appelianum I. L. Wiggins, D. B. Wiggins 1961-6-16 16529 Lassen 4.1 miles east of Bieber. 1265 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
  CHSC99534  Lepidium campestre Lowell Ahart; John Dittes 2008-6-20 14957 Lassen In meadow, 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
  JEPS114349  Lepidium campestre Lowell Ahart, John Dittes 2008-6-20 14957 Lassen In meadow, 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
  CHSC112394  Lepidium chalepense Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CDA3793  Lepidium latifolium Lee Wheeler 1962-8-15 Lassen Ravendale area. 0 Comment
  CHSC30604  Lepidium perfoliatum Mary Nesset 1975-7-7 1 Lassen Ravendale road next to Horse Lake. Comment
  CHSC64873  Lepidium perfoliatum Vernon H. Oswald; Lowell Ahart 1995-6-19 6899 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Near the road. 1383 Comment
  JEPS114647  Lepidium perfoliatum Lowell Ahart, John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  HSC6828  Lepidium perfoliatum K. P. St. John 1965-5-6 28 Lassen Susanville, across from Walker's Restaurant Comment
  GMDRC6950  Leptosiphon harknessii J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31424 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  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
  JEPS55592  Leucocrinum montanum W. Roderick 1961-5-3 Lassen ca. 4 road mi SE of Said Valley Reservoir and 17 road mi W of Termo Comment
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Aug 12 2008
  UC1134623  Leucocrinum montanum A. Simontacchi 1940-5-10 687 Lassen 6.0 mi wnw Burgess Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC508366  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mile north Madeline, 8.8 mile south Modoc Co. line 1676 Comment
  OBI77050  Leucocrinum montanum Anthony Baniaga 2011-5-31 295 Lassen Lassen NF. Off hwy 44, along 32N60. Poison Lake quad T32N R7E sec 14 SW of NE 1705 Comment
  OBI83366  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  NY962818  Leucophysalis nana N. H. Holmgren 1980-7-4 9510 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  JEPS127710  Leymus cinereus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -165 Lassen Cold Spring Road N after Dorsey Butte. 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
  UC1037094  Leymus cinereus Leo Whitney 1933-7-16 2207 Lassen ca 16 mi w upper end of Eagle Lake; Lassen National Forest, Harvey Mountain Comment
  SEINET239973 Image available Leymus triticoides G. L. Clifton 1996-6-5 34630 Lassen East of Herlong close to the railroad. 1230 Comment
  UCD65617  Leymus triticoides L. Whitney 1933-8-4 2128 Lassen Lassen National Forest. Sheepshead, ca. 10 miles NW of N end of Eagle Lake. 1889 Comment
  JEPS88528  Lilaea scilloides Vernon H. Oswald and Lowell Ahart 1996-6-24 7878 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), in Papoose Creek where it leaves the n end of the meadow, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1100164  Lilaea scilloides Malcolm A. Nobs and S. Galen Smith 1949-7-20 1048 Lassen Bieber; along Highway 299 Comment
  UC1609095  Lilaea scilloides Vernon H. Oswald and Lowell Ahart 1993-7-8 5645 Lassen near se end Poison Lake (Pittville Rd (Lassen 111, 36N01), near its intersection with 33N11, 0.4 mi n of Hwy 44) 1709 Comment
  CAS-BOT-BC130708  Lilium pardalinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49433 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC13735  Lilium washingtonianum subsp. washingtonianum S. Villard 1973-7-3 58 Lassen On west side of county road going from Susanville to Plumas National Forest, 2 miles after pavement ends. Comment
  CHSC59098  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1992-8-25 5188 Lassen Grassy Creek at the E end of Snag Lake. Lassen Volcanic National Park. 1850 Comment
  UCR227639  Limosella acaulis R. F. Thorne, Larry E. DeBuhr 1975-8-22 47206 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  HSC20654  Limosella acaulis D. E. Anderson 1962-8-6 2332 Lassen Lake at foot of Tule Mtn. Comment
  CHSC113012  Limosella aquatica Lowell Ahart; John Dittes 2013-7-23 18889 Lassen Around a man made pond, 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
  JEPS3468  Limosella aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3354 Lassen Honey Lake Valley; Adobe meadows Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  RSA0089260  Linanthus aureus Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  RSA716147  Linanthus ciliatus L. Ahart, John Dittes 2005-6-2 11936 Lassen 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
  UC1025096  Linanthus harknessii Leo Whitney 1934-5-27 1639 Lassen near Crater Lake 1828 Comment
  CHSC29901  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds. 1584 Comment
  CDA6345  Linaria genistifolia subsp. dalmatica T. C. Fuller 1968-6-12 17236 Lassen Corut Street & Miller Road, southwest Susanville. 0 Comment
  UC867779  Linum lewisii Alice Eastwood Aug 22 1912-Aug 26 1912 1853 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC36448  Linum lewisii var. lewisii Susan H. Euing 1982-6-3 2 Lassen Ca. 0.8 mi s jct forest service roads 5.16 and 5.17 heading towards 5-Corners. Comment
  CHSC99539  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2008-6-20 14917 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  POM107663  Listera convallarioides Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 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
  SEINET6032241  Lithophragma glabrum J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin Comment
  CHSC111397  Lithospermum arvense Lowell Ahart; John Dittes 2012-7-11 18351 Lassen On damp, bare soil, north edge of a farmed field, on the south side of the highway, about 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittville, 3955 feet east of Lassen-Shasta County Line, Fall River Valley. 1205 Comment
  RSA0037174  Lithospermum arvense Lowell A. Ahart, John Dittes 2012-7-11 18351 Lassen North edge of a farmed field, on the south side of the highway, about 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittville, 3955 feet east of Lassen-Shasta County Line, Fall River Valley. 1205 Comment
  UC1924235  Lithospermum ruderale Debra Valov 2004-6-9 2004259 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC7698  Lolium multiflorum Beverley J. Wise 1969-5-23 132 Lassen 34.8 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  UC1609378  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1993-6-28 5620 Lassen e. Poison Lake (n. of Hwy. 44 along Rd. 33N47 at n.e. end of Little Harvey Valley, between Champs Flat and Harvey Valley, meadow bordering a drying branch of Pine Creek); Little Harvey Valley 1737 Comment
  UC604536  Lomatium bicolor var. leptocarpum C. W. Sharsmith 1938-7-18 3633 Lassen 2 mi. s. Madeline (Madeline Plains); Madeline Plains Comment
  POM260287  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  JEPS107835  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
  JEPS118183  Lomatium dissectum var. multifidum Dean W. Taylor 2004-5-11 19059 Lassen 1.5 miles southwest of Constantina along Highway 395 1402 Comment
  SEINET178371  Lomatium dissectum var. multifidum Marcus E. Jones 1897-6-25 Lassen Susanville. 1341 Comment
  UC1137733  Lomatium dissectum var. multifidum L. R. Short 1936-5-12 S- 348 Lassen Lassen Forest, Burgess Spring Experimental Range 1834 Comment
  NY1066293  Lomatium macrocarpum B. M. Bartholomew 1993-5-13 6554 Lassen Just south of Ravendale. 1580 Comment
  UC1561383  Lomatium nevadense var. nevadense Barbara Ertter with Gary Schoolcraft 1987-6-16 7185 Lassen ridge w. Hot Springs VABM (Skeedaddle Mts., on n.e. side of Honey Lake); Skeedaddle Mts., Honey Lake 2133 Comment
  SEINET5333604  Lomatium nevadense var. nevadense N. H. Holmgren, P. K. Holmgren 1978-6-11 8924 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance. 1800 Comment
  UC1123036  Lomatium nevadense var. parishii K. E. Bradshaw 1939-5-27 241 A Lassen Plot 39-1 Black Mt. Exp. Forest (Lassen Nat'l Forest); , Halls Flat Quad., Black Mt. Exp. Forest Comment
  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
  CHSC89727  Lomatium nudicaule L. P. Janeway 2004-6-26 8150 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
  UC1609377  Lomatium nudicaule Vernon H. Oswald and Lowell Ahart 1993-6-28 5617 Lassen s.-s.e. flank Harvey Mt. (n.-n.e. of Burgess Meadow, n.e. of Poison Lake, n. of Hwy. 44 on Rd. 33N06) 1798 Comment
  CAS-BOT-BC217797  Lomatium ravenii Lincoln Constance; E. DiFulvio 1962-4-16 3747 Lassen 1 mile S of Ravendale 1615 Comment
  LA84783  Lomatium ravenii Tracy Call; Viola Call 1961-5-30 2048 Lassen about 2 mi. S of Ravendale 1462 Comment
  OBI48161  Lomatium ravenii Rhonda Riggins 1989-4-27 1641 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale. 1311 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
  UC1187686 Image available Lomatium ravenii Tracey and Viola Call 1961-5-30 2048 Lassen ca. 2 mi. s. Ravendale 1463 Comment
  UC1479583 Image available Lomatium ravenii Gary Schoolcraft 1980-5-9 232 Lassen e Sierra Ordnance Depot (Herlong) (near CA-NV State line); e of Sierra Ordnance Depot (Herlong) 1219 Comment
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Oct 26 2017
  UC1559672 Image available Lomatium ravenii Gary Schoolcraft 1988-5-4 1792 Lassen ca. 3 mi. s.e. Ravendale 1615 Comment
  UCR183195  Lomatium ravenii Jim Andre, G. L. Clifton 1993-6-2 7716 Lassen Along Hwy 395 c. 25 mi NE of Susanville at Viewland exit, east of Shaffer Mtn 1349 Comment
  UC1924598  Lomatium triternatum Debra Valov 2006-5-28 2006008 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1305 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
  OBI81391  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2049 Lassen Ravendale, Horse Lake road. 1/8 mile west of Jct. with 395 about 1.5 miles south of Ravendale, in sagebrush. Yellow blossom. 1463 Comment
  SEINET3694577 Image available Lotus humistratus Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9481 Lassen Madeline Plains, Westside Road, 9 km W of U.S. highway 395, 16 km NW of Termo 1615 Comment
  JEPS55772  Lotus purshianus var. purshianus Brown and Wieslander 1922-8-19 89 Lassen Martin Springs Eagle Lake Comment
  UC1137756  Lotus purshianus var. purshianus L. R. Short and J. Warren 1936-6-23 S- 447 Lassen Burgess Spring Experimental Range Lassen Forest Comment
  UCD169260  Lotus uliginosus S. L. Welsh; N. D. Atwood 2001-6-14 28145 Lassen Secret Valley Spring, at Cherry Creek rest stop, Hwy 395. 1520 Comment
  RSA122901  Lotus unifoliolatus L. R. Short, J. Warren 1936-6-23 S- 447 Lassen Burgess Spring, Exp Range. Comment
  CHSC4820  Lupinus R. Carter 1967-7-16 618 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca. 12 mi n of Susanville, on s side of rd. Comment
  RSA719890  Lupinus albifrons var. albifrons Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12914 Lassen Along Rt. 395, ca. 6 miles southeast of Johnstonville. Comment
  CHSC23548  Lupinus arbustus Wayne O. Baum 1971-7-6 71 -45 Lassen E. slope of Gallatin Peak. 1950 Comment
  CHSC5286  Lupinus arbustus 1944-7-19 Lassen Juniper Lake. 2055 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
  JEPS95013  Lupinus arbustus Vernon Oswald and Lowell Ahart 1997-6-24 8635 Lassen s of Susanville (near the small pond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
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Jun 8 2007
  SEINET12765226  Lupinus arbustus Vernon H. Oswald 1997-6-24 8635 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. about midway between Aspen Flat and Red Rock Lookout.; 0 2249 Comment
  UCD35731  Lupinus arbustus Beecher Crampton 1960-6-18 5724 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  SEINET5327728  Lupinus arbustus N. H. Holmgren, P. K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) E of Rye Patch Canyon summit, 16 km (10 mi) airline distance SE of Ravendale. On N-facing slope 1830 Comment
  NY732867  Lupinus arbustus subsp. calcaratus K. Morris 1973-5-25 211 Lassen Collected 9.6 miles north of Milford on US 395 Comment
  SEINET10484728  Lupinus arbustus subsp. silvicola A. Arthur Heller 1938-6-4 Heller 15142 Lassen Rather common in the yellow pine forest in open places just w of fredonyer pass E of westwood. Transition life zone 1707 Comment
  CAS-BOT-BC196338  Lupinus argenteus var. argenteus H. D. Ripley; R. C. Barneby 1944-5-30 5975 Lassen Ravendale 1676 Comment
  CAS-BOT-BC208760  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47444 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208837  Lupinus argenteus var. meionanthus Clare B. Hardham 1969-8-28 s.n. Lassen West of Janesville - Sierra Nevada Comment
  JEPS91018  Lupinus argenteus var. meionanthus Dean W. Taylor 1974-6-14 3722 Lassen at summit ca. 4 mi ssw Janesville (Janesville Grade Rd.); Plumas National Forest Comment
  JEPS79209  Lupinus brevicaulis L. R. Heckard with R. C. Bacigalupi 1980-6-11 5246 Lassen along US 395, 11.3 mi n Litchfield (s of Deep Creek crossing); , n of Litchfield 1463 Comment
  CAS-BOT-BC196642  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  HSC14808  Lupinus caudatus M. T. Milligan 1964-8-6 207 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA8059  Lupinus caudatus H. A. Barker 1927-7-15 806 Lassen Desert east of Beckwith near highway. Comment
  SEINET3145129  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 mi S of Doyle 1372 Comment
  UCR18734  Lupinus caudatus Frank C. Vasek 1975-7-11 750711- 15 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  SEINET10490607  Lupinus caudatus subsp. caudatus Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 863 Lassen Collected on road bank 24 mi n of calif. State line on hwy 395. Comment
  RSA87160  Lupinus confertus Mary DeDecker 1955-8-25 262 Lassen Honey Lake: Highway 395. Comment
  SEINET6655529  Lupinus laxiflorus var. calcaratus Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale.; 0 1830 Comment
  SEINET10488723  Lupinus lepidus Williams 1983-7-31 Williams 126 Lassen Roadside near janesville. Sandy soil with sagebrush and bitterbrush. Great Abundance 1280 Comment
  CHSC4818  Lupinus lepidus var. confertus R. Carter 1967-7-16 618 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca. 12 mi n of Susanville, on s side of rd. Comment
  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
  CHSC117063  Lupinus lepidus var. confertus Mary De Decker 1955-8-25 262 Lassen Honey Lake: Highway 395 Comment
  NY747211  Lupinus lepidus var. confertus M. J. Williams 1983-7-31 83- 126 --1 Lassen Roadside near Janesville 1280 Comment
  SEINET8051636  Lupinus lepidus var. confertus G. Schoolcraft 1992-8-11 2246 Lassen Along Highway 395 near inters. of Janesville Road 1280 Comment
  SFV11002  Lupinus lepidus var. confertus J. Turner, F. M. Ball 1962-7-13 1194 Lassen Roadside on Highway 395 near Milford. 1280 Comment
  UC1138211  Lupinus lepidus var. lobbii George A. Fischer and Irwin H. Johnson 1933-7-12 F 203 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  CHSC60356  Lupinus lepidus var. sellulus Mary Ann Showers 1992-6-13 2535 Lassen Lassen Vocanic National Park. Trail from Snag Lake jct to Widow Lake. 1828 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
  UC1537122  Lupinus lepidus var. sellulus Gordon H. True Jr. 1936-6-25 535 Lassen slopes e Harvey Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  NY747411  Lupinus leucophyllus var. canescens M. S. Baker 1894-7-12 s.n. Lassen Pine Creek Comment
  NY747375  Lupinus leucophyllus var. leucophyllus H. D. D. Ripley 1943-6-13 5679 Lassen Milford 1265 Comment
  JEPS126528  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. Comment
  SBBG30552  Lupinus microcarpus var. microcarpus D. Myrick 1968-6-19 1957 Lassen Hwy 395, 23 mi S of Alturas 1524 Comment
  UC15846  Lupinus microcarpus var. microcarpus Mrs. R. M. Austin and Bruce June 1898 2145 Lassen Madaline Plains Madaline Plains <Madeline Plains>; Madaline Plains Comment
  JEPS94110  Lupinus nevadensis Vernon H. Oswald and Lowell Ahart 1998-5-22 9113 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1402 Comment
  SEINET10450722  Lupinus obtusilobus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park near the peak. In dry ground. Comment
  SEINET6191823 Image available Lupinus sellulus subsp. sellulus B. J. Cox 1971-1 3186 Lassen 3 mi E of Westwood on CA 36 1608 Comment
  HSC40685  Lupinus sellulus var. artulus Thomas W. Nelson, Jane P. Nelson 1976-8-1 3123 Lassen Lassen Volcanic National Park at Devestated Area Comment
  OBI75894  Luzula comosa Anthony Baniaga 2011-8-17 505 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1905 Comment
  CDA8224  Machaeranthera canescens T. C. Fuller 1964-10-8 12703 Lassen Head of Secret Valley, south of Ravendale. 0 Comment
  CAS-BOT-BC343691  Madia elegans Alice Eastwood 1912-8-22 1817 Lassen Morgans Springs, Lassen Butte Region Comment
  SEINET11601334 Image available Madia elegans M. J. Williams, G. L. Smith 1983-1 83- 155 -2 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  UC89448  Madia elegans W. E. Bryant Lassen Comment
  UC717967  Madia glomerata David D. Keck 1944-7-8 5447 a Lassen 2 mi e Westwood (in meadow leading down to Mountain Meadows Reservoir); Sierra Nevada 1524 Comment
  CAS-BOT-BC334690  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC343060  Madia gracilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50653 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC347437  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Sierra Nevada Mountains. Gold Run Creek south of Susanville Comment
  CAS-BOT-BC347440  Malacothrix floccifera Louella Bass 1983-6-2 s.n. Lassen On Sears Road near Janesville Comment
  UCD116543  Malva neglecta P. B. Schultz 1967-7-11 72 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  UCR67380  Malvella leprosa George K. Helmkamp 1990-9-23 A- 8 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  RSA312311  Malvella leprosa Verne Grant, Irving Schneider 1947-9-6 8386 Lassen Hot springs about one mile west of Wendel. Comment
  HSC23508  Marrubium vulgare A. E. Anderson 1967-7-11 78 Lassen Around Bly Tunnel outlet, 1 mi. E of rd. to Eagle Lake Biological Station 1555 Comment
  CAS-BOT-BC71144  Marsilea Clarence R. Quick 1962-6-17 62 -26 Lassen Swains Hole, south of Blacks Mountain Experimental station 1554 Comment
  UC62421  Marsilea oligospora Baker and Nutting 1894-7-12 Lassen Pine Creek Comment
  UC62270  Marsilea vestita subsp. vestita J. Burtt Davy Jun 17 1897-Jun 24 1897 3308 Lassen Honey Lake Valley Comment
  CDA8329  Matricaria occidentalis T. C. Fuller 1963-7-15 10886 Lassen East of road to Susanville, 2.2 miles southeast of Pittville. 0 Comment
  CHSC27638  Medicago lupulina Jerry Snodgrass 1978-7-16 50 a Lassen Along Hwy 36, several mi E of Freedonyer Pass. 1493 Comment
  CHSC68889  Melica fugax Vernon Oswald; Lowell Ahart 1997-6-24 8645 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
  UCD87270  Melica fugax Beecher Crampton 1960-6-18 5707 Lassen Lassen County (N.E.): southern Warner Mountain, Long Valley, 6 miles southeast of Jess Valleys. 2133 Comment
  UC593538  Melica stricta E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1771 Lassen Red Rock 1280 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
  CHSC58842  Mentha canadensis Vernon H. Oswald; Lowell Ahart 1992-7-16 5109 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  CHSC60909  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-7-8 5654 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poisen Lake. 1709 Comment
  RSA152590  Mentzelia albicaulis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16340 Lassen 13.5 mi. E. of Susanville. Comment
  CHSC5299  Mentzelia congesta R. Gein 1946-6-25 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  JEPS107445  Mentzelia congesta Lowell Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  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
  RSA32753  Mentzelia dispersa A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. 1524 Comment
  UC506973  Mentzelia dispersa George A. Fischer, Irwin H. Johnson 1933-7-12 F 229 Lassen Lassen Forrest, Patterson Flat 1737 Comment
  SEINET5333248  Mentzelia laevicaulis R. H. Miller 1954-8-27 1116 Lassen On U.S. 395, 3 miles north of Doyle. Comment
  UC1121656  Mentzelia montana Robert W. Gardner 1937-6-18 G 22 Lassen Halls Flat Quadrangle, Burgess Spring Experimental Range Comment
  CHSC7719  Mertensia ciliata var. stomatechoides Clarence Ash 1969-5-21 2 Lassen Diamond Mountain, distance from Susanville undetermined. 1828 Comment
  CAS-BOT-BC429081  Micranthes odontoloma Alice Eastwood 1912-8-22 1861 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC6266  Micranthes oregana M. West 1946-7-12 Lassen Stephens Ranch. 1905 Comment
  NY539941  Micromonolepis pusilla A. Tiehm 1986-5-12 10351 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek 1341.1 Comment
  CHSC99239  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  CAS-BOT-BC349298  Microseris nutans Clarence R. Quick 1961-6-21 61 -19 Lassen Adjacent to Road 21, Blacks Mt. Experimental Forest, northeast of Lassen Peak 1798 Comment
  SEINET10902895  Microsteris gracilis Mary Susan Taylor 1974-5-4 Taylor 227 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
  RSA104219  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9803 Lassen Hills between Madeline and Likely 1524 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
  JEPS107307  Mimulus arvensis Lowell Ahart, John Dittes 2005-6-1 11900 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC1609365  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  CHSC59100  Mimulus moschatus Vernon H. Oswald; Lowell Ahart 1992-8-25 5182 Lassen Lassen Volcanic National Park. Grassy creek near the S end of Snag Lake. 1853 Comment
  HSC20714  Mimulus moschatus M. T. Milligan 1964-7-16 132 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC1778585  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen Pumice by S side of Hwy 44 vicinity of Bogard campground. 1737 Comment
  UC1553406  Mimulus nanus var. nanus Gary Schoolcraft 1988-6-20 1813 Lassen 16 mi w Madeline; Ash Valley 1584 Comment
  JEPS11060  Mimulus primuloides Brown and Wieslander 1922-7-30 27 Lassen Martin Springs Eagle Lake Comment
  RSA434702  Mimulus primuloides Christopher Davidson 1974-7-25 2495 Lassen Lassen Volcanic Nat. Park. On rd to Juniper Lake. 1982 Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  HSC26596  Mimulus pygmaeus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19272 Lassen In Harvey Valley near Cone Springs Comment
  RSA536394  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-18 627 Lassen Gray's Valley, 4 miles N of USFS Bogard Work Center. 1715 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
  POM43553  Mimulus suksdorfii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  JEPS79150  Mimulus torreyi L. R. Heckard with R. Bacigalupi 1980-6-12 5255 Lassen ne Westwood (near golf course) 1554 Comment
  RSA149052  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  JEPS94562  Mitella pentandra Vernon Oswald and Lowell Ahart 1997-6-24 8615 Lassen slope along Forest Rd. 29N43 5.4 mi e Gold Run Rd. (n side of mtn., s of Susanville); Diamond Mtn. 1889 Comment
  UC1537598  Monardella odoratissima subsp. glauca Gordon H. True Jr. 1936-6-27 552 Lassen between Bull Flat and Hot Spring Mountain 1524 Comment
  UC506902  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-21 F 279 Lassen Stringer Lassen Forest 1696 Comment
  CAS-BOT-BC213930  Monardella odoratissima subsp. pallida M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Mts. s of Eagle Lake Comment
  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
  UCR244049  Monolepis pusilla Jim Andre 1993-6-1 19719 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  JEPS87431  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02) 7 air mi w Eagle Lake (5.3 mi e of Lassen 105 (32N28Y), near Summit Camp) 1889 Comment
  CHSC64892  Montia fontana subsp. chondrosperma Vernon H. Oswald 1995-6-26 6925 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally abundant, forming mats on wet rocks in a shallow, roadside streamlet. 1712 Comment
  CHSC66257  Montia linearis Vernon H. Oswald; Lowell Ahart 1996-6-24 7875 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Growing in moist soil on the edge of Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  UC1609172  Montia linearis Vernon H. Oswald and Lowell Ahart 1993-6-28 5611 Lassen ne of Poiston Lake (on the sse flank of Harvey Mountain, n of Hwy 44 on Rd, 33N06, nne of Burgess Meadow); Harvey Mountain 1798 Comment
  UC773867  Montia linearis L. R. Short, Wm. Gansberg 1936-6-8 S 392 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1743 Comment
  CAS-BOT-BC445067  Montia linearis Clarence R. Quick 1962-6-17 62 -20 Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  SBBG69755  Montia linearis E. Rockwell -Jun-1925 782 Lassen near Honey Lake 1219 Comment
  HSC10386  Muhlenbergia asperifolia M. T. Milligan 1964-8-6 201 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC1776691  Muhlenbergia asperifolia G. Schoolcraft 1999-7-7 2854 Lassen about 9 miles NE of Ravendale - dune N of Horne Ranch Road 1621 Comment
  UCD86528  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UCD86562  Muhlenbergia asperifolia R. Tofsrud 1947-7-1 227 Lassen Between Johnstonville and Standish. Comment
  UC163551  Muhlenbergia jonesii Milo S. Baker Lassen Eagle Lake Comment
  UC60836  Muhlenbergia jonesii M. S. Baker and Frank Nutting 1894-7-30 Lassen near Silver Lake Comment
  CHSC117514  Muhlenbergia richardsonis Lowell Ahart; John Dittes 2016-7-13 21146 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  RSA129677  Muhlenbergia richardsonis G. A. Fischer, Irwin Johnson 1933-7-12 F- 196 Lassen Lassen National Forest; Grass Valley. 1695 Comment
  UC1101591  Muhlenbergia richardsonis Malcolm A. Nobs and S. Galen Smith 1949-7-21 1060 Lassen 4 mi n Madeline (shallow marshy stream from springs) Comment
  UC1143006  Myosurus apetalus August L. Hormay 1934-5-14 Lassen Gray's Flat Well; Lassen National Forest 1706 Comment
  CHSC68868  Myosurus apetalus var. borealis Vernon Oswald; Lowell Ahart 1997-6-24 8651 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. In a meadow. 2249 Comment
  NY492651  Myosurus apetalus var. montanus N. H. Holmgren 1978-6-11 8913 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
  JEPS28701  Myriophyllum sibiricum George W. Gillett 1957-7-28 920 Lassen E shore Butte Lake, Lassen Volcanic National Park. 1844 Comment
  UC773905  Navarretia breweri L. R. Short and J. Warren 1936-6-5 S- 374 Lassen Burgess Spring Experiment Range Lassen Forest 1798 Comment
  CHSC6208  Navarretia divaricata W. Vinyard 1946-6-12 Lassen Eagle Lake. Willow Creek. 1371 Comment
  UC773937  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spring Experiment Range Lassen Forest 1844 Comment
  SEINET3894760  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -065 Lassen Along Hwy 299 about 9.4 miles east of jct with Hwy A2 and 1.4 west of jct with Hwy 139, southwest of Adin.; 0 Comment
  CHSC117215  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2016-6-7 20995 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC99510  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2008-6-22 15031 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS106521  Navarretia intertexta subsp. propinqua L. P. Janeway 2004-6-26 8144 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  UC913382  Navarretia intertexta subsp. propinqua G. Thomas Robbins 1945-9-24 2148 Lassen along Susanville to Pittville highway; Lassen National Forest 1737 Comment
  CHSC1252  Navarretia leptalea K. Chew 1951-7-8 Lassen Stephens Meadows, Pine Creek. 1706 Comment
  CHSC1253  Navarretia leptalea 1951-7-8 Lassen Pit River. 1524 Comment
  RSA0092313  Navarretia leptalea subsp. leptalea Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31423 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
  UC23430  Navarretia leptalea subsp. leptalea M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SJSU11519  Navarretia leucocephala subsp. bakeri R. L. Fisher 1958-6-16 Lassen Madeline Plains 6 mi S of Madeline 1615 Comment
  SJSU11520  Navarretia leucocephala subsp. bakeri J. W. Tilden 1958-6-27 1295 Lassen Madeline, Madeline Plains 1615 Comment
  CHSC54188  Navarretia leucocephala subsp. minima Vernon H. Oswald 1991-5-28 4617 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the bed of vernal pools on a flat east of the barn. 1264 Comment
  CHSC6209  Navarretia leucocephala subsp. minima J. B. Kimsey 1946-6-11 Lassen Pine Creek near Eagle Lake. 1554 Comment
  CHSC89737  Navarretia leucocephala subsp. minima L. P. Janeway 2004-6-26 8145 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  POM75594  Navarretia leucocephala subsp. minima Marcus E. Jones 1897-6-18 10107 Lassen Chat. 1524 Comment
  UC23714  Navarretia leucocephala subsp. minima M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  UC1137723  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
  SEINET200214  Navarretia minima C. MIcMillan 1949-6-15 1542 Lassen 5 miles W of Bleber. Comment
  SEINET14160494  Navarretia sinistra D. W. Taylor 2012-7-18 21281 Lassen Cascade Ranges, Windmill Flat (9tributary Juniper Creek, Pit River watershed, 11 miles S of Adin), Letterbox Hill. 1707 Comment
  RSA0043177  Nemophila pedunculata L. Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  CHSC4841  Nicotiana attenuata R. Carter 1967-7-13 596 Lassen Collected behind water tank. Ca. 500 yds NE of Eagle Lake Biology Station on the e shore. 1524 Comment
  CDA41135  Nicotiana attenuata T. C. Fuller 1962-8-28 9477 Lassen Secret Valley, Highway 395, 3.3 miles north of road to Karlo. 0 Comment
  HSC21267  Nicotiana attenuata M. T. Milligan 1964-8-23 238 Lassen 400 yards E of Siad Valley Reservoir on Termo Rd. 1524 Comment
  HSC4506  Nitrophila occidentalis Fred J. Kindel 1955-7-14 Lassen Wendel Comment
  UC49996  Nothocalais troximoides M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC171455  Oenothera M. Williams 1974-7-27 s.n. Lassen Burned area near Hallelujah Junction, Sierra Nevada 1493 Comment
  JEPS124836 Image available Oenothera deltoides Laurie Hooker 1965-7-12 106 Lassen 2.6 miles past Milford on Highway 395. Comment
  SJSU10936  Oenothera deltoides subsp. piperi G. R. Ostrander 1965-7-12 70 Lassen by Hwy 395, 5 mi N of Doyle 1158 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  RSA27327  Oenothera flava C. L. Hitchcock 1940-5-26 6642 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET3150416  Oenothera tanacetifolia E. K. Balls 1950-5-9 15954 Lassen 5 mi. S of Modoc Co. line, Hwy 395 1219 Comment
  CDA18274  Onobrychis viciifolia G. D. Barbe 1974-8-2 1940 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC350045  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1899 Lassen Battle Creek Meadow, Lassen Butte Region Comment
  JEPS31991  Oreostemma alpigenum var. andersonii Duncan Dunning 1921-8-15 Lassen above Westwood Comment
  UC1561410  Orobanche corymbosa subsp. corymbosa Barbara Ertter 1987-7-25 7315 Lassen Ca 27 air miles NW of Susanville, FR33N02 to Harvey Valley W of junction with FR33N04. Comment
  CHSC37345  Orthocarpus cuspidatus subsp. cryptanthus J. D. Prouty 1978-6-28 5 Lassen Lower Dry L., SE of Eagle L. 1645 Comment
  POM44256  Orthocarpus hispidus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  JEPS98391  Oryzopsis exigua Vernon H. Oswald, G. Schoolcraft, M. Dolan, and B. Corbin 2000-6-18 9929 Lassen E of Ravendale (E-NE of the lookout on Observation Peak) 2377 Comment
  CHSC59070  Oxypolis occidentalis Vernon H. Oswald; Lowell Ahart 1992-8-25 5194 Lassen Lassen Volcanic National Park. Forested slope at the E corner of Snag Lake. 1853 Comment
  CAS-BOT-BC413245  Oxytheca dendroidea subsp. dendroidea Robert F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  CHSC101059  Packera cana John Dittes 2008-5-22 1534 Lassen Modoc Plateau; ca. 15.4 air miles southeast of Adin, ca. 3.6 air miles east of Hayden Hill, ca 0.3 mile southeast of intersection of Hwy 139 and FS Road 36N02; edge of wooded volcanic toe-slope on northeast side of Willow Creek. 485 Comment
  HSC81188  Packera cana Thomas W. Nelson, Jane P. Nelson 1980-7-6 5990 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  HSC68931  Packera eurycephala Gary Schoolcraft 1980-6-5 251 Lassen N base of Snowstorm Mtn. 1585 Comment
  OBI49191  Packera eurycephala var. eurycephala Lewis S. Rose 1940-6-11 40505 Lassen 8 mi W of Nubieber 1219 Comment
  CHSC118854  Packera multilobata L. mP. Janeway; B. Castro 2015-6-5 11774 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end ofTuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  CHSC93246  Packera streptanthifolia John Dittes; Scott Chamberlain 2004-6-28 1011 Lassen Modoc Plateau; Long Valley; ca. 2.0 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1448 Comment
  CHSC65093  Packera subnuda var. subnuda Vernon H. Oswald; Lowell Ahart 1995-7-24 7136 Lassen High Cascade Range. Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. In meadow bordering the creek. 1905 Comment
  UC69607  Paeonia brownii J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  RSA624912  Paeonia brownii B. J. Cox, D. B. Dunn 1971-6-2 2604 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
  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
  CAS-BOT-BC253718  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen In city park, Susanville 1295 Comment
  SEINET223918  Panicum capillare subsp. capillare Arnold Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs Comment
  CAS-BOT-BC259611  Pascopyrum smithii R. E. Frenkel 1964-7-12 663 Lassen On California Highway 299, 1.5 miles W of Bieber 1249 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
  SEINET13352677  Pectocarya penicillata A. Tiehm 1980-1 5753 Lassen N end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  SBBG68675  Pedicularis attollens S. W. Hutchinson -Jun-1925 1092 Lassen Eagle Lake 1554 Comment
  CAS-BOT-BC266654  Pedicularis centranthera G. Schoolcraft 1989-5-3 1862 Lassen NW corner of Secret Valley Comment
  HSC68839  Pedicularis centranthera Gary Schoolcraft 1980-4-30 211 Lassen W of Shaffer Well, N of Shaffer Mtn. 1354 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
  CHSC4924  Pedicularis semibarbata L. G. Bennett 1967-7-14 142 Lassen Immediate vicinity of Silver Lake. 1975 Comment
  SD6613  Pedicularis semibarbata Mrs. R. M. Austin 1880-1 Lassen Dutch Hill Comment
  CHSC12945  Penstemon cinicola K. R. Stern 1974-6-26 5852 Lassen Vicinity of Cold Spring, e of Butte Lake, Cinder Cone trail, Lassen Volcanic National Park. 1859 Comment
  SEINET10547960  Penstemon confusus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2607 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along ridge and in sandy wash. 1402 Comment
  CHSC5900  Penstemon deustus var. pedicellatus W. Vinyard 1946-6-10 Lassen Eagle Lake. Pelican Point. 1554 Comment
  JEPS29103  Penstemon deustus var. pedicellatus Lauramay T. Dempster 1961-6-17 1679 Lassen Highway 395 just w Tule Mt.; just w of Tule Mt. 1645 Comment
  UC477496  Penstemon deustus var. pedicellatus A. G. Brenneis 1928-7-3 12 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  CHSC25147  Penstemon gracilentus B. Anthony 1967-7-10 263 Lassen Deans Meadow, 6.8 mi from Eagle Lake Biological Station. 1920 Comment
  CHSC62007  Penstemon gracilentus Eenam Sin 1992-6-3 26 Lassen North east corner at the base of Gallatin Peak. 1524 Comment
  JEPS11268  Penstemon gracilentus Brown and Wieslander 1922-7-25 5 Lassen Martin Sprs , Martin Sprs (Eagle Lake) 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
  UC1483843  Penstemon gracilentus G. Schoolcraft 1979-7-3 110 Lassen 4.3 mi up the road from Observation Peak (near Curlleaf Mtn.); up rd from Obseration Peak, near Curlleaf Mtn. 2133 Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  UCD124278  Penstemon laetus Beecher Crampton 1964-6-26 7082 Lassen ca. 32 miles northwest of Susanville west end of Harvey Valley. Comment
  SEINET11262107  Penstemon neotericus Karl A. Vincent, Charlotte A. Labbe 1986-7-19 4381 Lassen Sierra Nevada, Roop Mtn. Along CA A1 ca 4 mi NW of jct CA36, site ca 6 air mi WNW of Susanville.; 0 1737 Comment
  SEINET11262116  Penstemon neotericus Karl A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mtn. Along CA A1 ca 4 mi NW of jct CA 36, site ca 6 air mi WNW of Susanville.; 0 1737 Comment
  RSA519227  Penstemon neotericus Karl Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mtn. Along CA A1 ca 4 mi NW of jct CA 36, site ca 6 air miles WNW of Susanville. 1738 Comment
  SD133676  Penstemon neotericus Karl A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mtn., along CA 36 ca 1 mi E of jct. CA A21 on E side of Westwood 1524 Comment
  SEINET5329199 Image available Penstemon neotericus J. T. Howell 1973-7-10 49758 Lassen near Westwood 1554 Comment
  CAS-BOT-BC239222  Penstemon newberryi var. berryi C. R. Quick 1964-7-11 64 -77 Lassen Humboldt Summit ne. of Janesville & Butte Mdws. 2011 Comment
  NY627392  Penstemon newberryi var. newberryi R. M. Austin 08 1878 s.n. Lassen Mount Dyer Comment
  NY641730  Penstemon roezlii R. G. Olmstead 1984-6-27 582 Lassen 10.3 miles east from U.S. 395 pm Rye Patch Canyon road. 1603.3 Comment
  NY650095  Penstemon roezlii N. H. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 miles) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 miles) airline distance southeast of Ravendale. 1580 Comment
  POM268103  Penstemon roezlii H. C. Cantelow 1941-5-22 s.n. Lassen North of Litchfield, US Hwy 395. Comment
  SEINET201571  Penstemon roezlii A. Cronquist, AH Holmgren 1959-6-18 8483 Lassen 5 mi S of Adin Comment
  CAS-BOT-BC239493  Penstemon rydbergii var. oreocharis A. M. Vollmer; L. Beane 1953-7-1 78 Lassen Along Halls Flat road beginning 6 miles west of Susanville to McArthur 1554 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-BC239504  Penstemon rydbergii var. oreocharis Louella Bass 1973-6-6 EV 100 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC239506  Penstemon rydbergii var. oreocharis L. B. Barlow 1967-7-4 89 Lassen 5 mi. south of Eagle Lake Biological Sation on Gallatin Beach Road 1737 Comment
  RSA59553  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen 0.5 mi N of turnoff to Heir, Hwy 395, between Milford and Doyle. 1280 Comment
  UC1142926  Penstemon rydbergii var. oreocharis A. L. Hormay 1941-6-25 22 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 Comment
  UC54980  Penstemon rydbergii var. oreocharis J. B. Davy Lassen Amedee Comment
  CHSC12411  Penstemon speciosus Lynn R. Thomas 1969-6-20 135 Lassen Just above Deans Meadow, ca. 6 mi. s of E. L. B. S. 2011 Comment
  CHSC12458  Penstemon speciosus Robert W. Severin 1969-6-20 2 Lassen 4 miles s of E. L. B. S. in Dean's Meadow. 1950 Comment
  CHSC25148  Penstemon speciosus L. E. Ray 1967-6-24 52 Lassen Collected ca. 8 miles s ELBS, Deans Meadow. 1950 Comment
  JEPS28986  Penstemon speciosus Frances D. Payne 1929-7-12 86 Lassen ridge above Lost Lake (southern end Warner Range); , ridge above Lost Lake 2286 Comment
  NY660809  Penstemon speciosus N. H. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale. 1680 Comment
  POM195125  Penstemon speciosus D. D. Keck 1930-7-23 950 Lassen Susanville. 1280 Comment
  RSA121810  Penstemon speciosus L. R. Short, J. Warren 1936-6-26 S- 357 Lassen Burges Spr. Exp. Range. 1845 Comment
  RSA17709  Penstemon speciosus Elmer I. Applegate 1934-5-4 8932 Lassen South end of Secret Valley Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC1226034  Penstemon speciosus Arthur Cronquist, Arthur H. Holmgren 1959-6-16 8455 Lassen 26 mi nw Reno; nw of Reno Comment
  NY661042  Penstemon speciosus P. A. Munz 1947-5-19 11877 Lassen Highway 395, 3.5 miles south of Ravendale 1615.4 Comment
  UCSB11863  Penstemon speciosus Haller, John 1961-6-26 Lassen Hat Creek- Susanville Road, about 14 mi E of Calif. 89 at Subway Cave 1737 Comment
  NY661060  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats) southeastern Lassen County. 1493.5 Comment
  CAS-BOT-BC239661  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36, west of Susanville 1371 Comment
  CAS-BOT-BC243410  Penstemon sudans David D. Keck 1930-7-23 953 Lassen Four miles west of Susanville, Sierra Nevada 1463 Comment
  NY661801  Penstemon sudans D. D. Keck 1930-7-23 948 Lassen Susanville 1280.2 Comment
  NY661808  Penstemon sudans D. D. Keck 1935-6-25 3756 Lassen Susanville; just west of town Comment
  UC1012466  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36 w Susanville; w of Susanville 1371 Comment
  CAS-BOT-BC239691  Penstemon venustus Karl A. Vincent 1987-6-25 4436 Lassen Sierra Nevada, SE side of Fredonyer Butte; steep gravelly roadbank along N side of CA 36 ca 11.5 mi WSW of Susanville, E of Fredonyer Pass 1584 Comment
  CAS-BOT-BC211251  Perideridia Louella Bass 1976-1-1 158 Lassen Elysian Valley Comment
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  UC1143014  Perideridia oregana August L. Hormay 1934-7-2 Lassen Headquarters Lassen National Forest (1/2 mi n of Black's Mtn.) 1706 Comment
  HSC103641  Perideridia parishii subsp. latifolia Thomas W. Nelson, Jane Nelson 1985-8-10 8017 Lassen Along north side of Silver Lake 1829 Comment
  HSC63926  Peritoma platycarpa Teresa Prendusi 1980-5-29 1108 Lassen Willow Creek, 2 mi. NE of Susanville on mesa tops 1357 Comment
  SEINET5845147  Peritoma platycarpa J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  CHSC61234  Persicaria amphibia P. V. Caldwell 1972-7-16 297 Lassen At foot of Black Mtn. on e shore of Eagle Lake. Comment
  UC1069415  Phacelia A. Simontacchi 1940-6-24 849 Lassen 0.2 mi nnw Halls Flat; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC5259  Phacelia adenophora 1944-6-21 Lassen Eagle Lake shore. 1584 Comment
  JEPS25529  Phacelia adenophora Rimo Bacigalupi with Lincoln Constance 1959-6-16 7143 Lassen US Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside road) 1341 Comment
  JEPS79216  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  UC1088434  Phacelia adenophora Peter H. Raven and Otto T. Solbrig 1958-6-17 13281 Lassen 5.7 mi s Ravendale Comment
  UC579734  Phacelia adenophora David D. Keck and J. Clausen 1935-6-24 3736 Lassen 2 mi s Ravendale 1464 Comment
  UCR70753  Phacelia adenophora Arnold Tiehm, Jan Nachlinger 1988-6-2 11701 Lassen S side of Shaffer Mtn, 3-4 road mi. north of the Wendel Road on Hwy 395 from Susanville to Alturas, west of the highway 1229 Comment
  JEPS29745  Phacelia bicolor var. bicolor Rimo Bacigalupi and L. R. Heckard 1962-5-28 8500 Lassen junction of cut-off road to Standish and Litchfield (Lassen Co. A3) with U.S. highway 395 1219 Comment
  JEPS78146  Phacelia hastata Gary W. Zamzow 1972-7-19 89 Lassen Hwy 139 15 mi s Adin; Willow Creek campground 1524 Comment
  CDA40418  Phacelia hastata J. T. Howell 1934-7-8 12480 Lassen Champ s Flat. 0 Comment
  POM195121  Phacelia heterophylla subsp. virgata D. D. Keck 1930-7-23 956 Lassen Fifteen miles west of Susanville. 1524 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
  CHSC114005  Phacelia heterophylla var. virgata B. Castro; L. P. Janeway 2014-6-7 2029 Lassen Northern High Sierra Nevada. 1.1 air mi SSW of Fredonyer Pass, along USFS Rd 29N46 0.4 rd mi S of Hwy 36. 1749 Comment
  CHSC5262  Phacelia humilis 1944-7-9 Lassen Dow Butte, Eagle Lake. 2042 Comment
  CHSC63401  Phacelia humilis Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6314 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  CHSC80207  Phacelia humilis Jeanne Boze 1981-6-13 113 Lassen On northeast slope of Gallatin Peak. 2011 Comment
  HSC30186  Phacelia humilis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19265 Lassen Harvey Valley near Cone Springs Comment
  JEPS118501  Phacelia humilis A. Holmen 2011-8-12 CA 320 -92 Lassen US Hwy 395 South to Termo. Turn East onto Lassen Co. Rd 508 (Juniper Ridge Rd). Continue approximately 11 miles to Cold Springs Rd and head north for 3 miles. Turn and travel about 1 mile. Collection site is along road. Comment
  JEPS17612  Phacelia humilis Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5405 Lassen 4.4 mi s Patterson Ranger Station (s end of mts., e edge of meadow); Modoc Nat. Forest, Warner Mts., Long Valley Meadow 2057 Comment
  UC133087  Phacelia humilis T. S. Brandegee 1892-7-3 Lassen Susanville Comment
  UCD120530  Phacelia humilis var. humilis Beecher Crampton 1960-6-18 5728 Lassen N.E. part of county; southern Warner Mtns., vicinity Blue Lake Ranch. Comment
  CHSC5263  Phacelia imbricata 1944-7-6 Lassen Eagle Lake. Harvey Valley. 1694 Comment
  CHSC12442  Phacelia linearis Robert W. Severin 1969-6-25 33 Lassen E.L.B.S. 25 feet s of library. 1569 Comment
  CHSC80208  Phacelia linearis Jeanne Boze 1981-6-13 117 Lassen On northeast slope of Gallatin Peak. 1981 Comment
  RSA152684  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16357 Lassen On hillside near northeast end of Eagle Lake. Comment
  UCD150392  Phacelia linearis William Anderson 1963-6-2 s.n. Lassen Eagle Lake. Comment
  NY1056442  Phacelia lutea var. glandulifera A. J. Cronquist 1959-6-17 8479 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  NY1056438  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale 1341 Comment
  CAS-BOT-BC141448  Phacelia ramosissima var. eremophila John Thomas Howell 1934-6-10 11873 Lassen Janesville Comment
  UC107342  Phacelia ramosissima var. eremophila T. S. Brandegee 1892-6-29 Lassen Janesville 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
  JEPS79143  Phacelia thermalis L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  NY1057981  Phacelia thermalis N. H. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  SEINET3091880 Image available 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. 1372 Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  UCD88537  Phalaris arundinacea R. Tofsrud 1947-7-20 257 Lassen Near Pittville. Comment
  CAS-BOT-BC253549  Phleum alpinum G. Schoolcraft 1997-8-6 2668 Lassen Diamond Mtn. 2316 Comment
  SJSU5104  Phleum pratense H. L. Buckalew 1961-7-9 Lassen near lake shore, Blue Lake, Warner Mts 1828 Comment
  UC1776695  Phleum pratense G. Schoolcraft 1994-8-2 2407 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  CHSC4271  Phlox diffusa K. R. Stern 1967-6-25 2430 Lassen On road to Eagle Lake Biological Station, ca. 3 mi. E of Eagle Lake. 1676 Comment
  UC1609186  Phlox diffusa Vernon H. Oswald and Lowell Ahart 1993-5-12 5372 Lassen 0.9 mi nw Hwy. 44 intersection with A21 (to Westwood) (sw side of Hwy 44) 1737 Comment
  SEINET10496851  Phlox diffusa Mary Susan Taylor 1982-5-7 Taylor 4430 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  JEPS91153  Phlox douglasii subsp. rigida Dean W. Taylor 1974-6-14 3715 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  JEPS114635  Phlox gracilis Lowell Ahart, John Dittes 2008-6-20 14929 Lassen Around 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
  JEPS94134  Phlox gracilis Vernon H. Oswald and Lowell Ahart 1998-5-22 9100 Lassen ca. 3 mi. n. Doyle (Hackstaff Rd. 1.0 mi. s. of Laver Crossing Rd., 0.2 mi. n. of Fort Sage Rd.) 1316 Comment
  UC972192  Phlox gracilis Milo S. Baker 1952-5-23 12414 Lassen e of Chester (Hwy 36) Comment
  RSA304681  Phlox hoodii var. canescens Jim Shevock 1971-4-9 944 Lassen Hwy 299, E of Dana. 1067 Comment
  POM75677  Phlox speciosa subsp. occidentalis Marcus E. Jones 1897-6-28 10531 Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  RSA104310  Phlox speciosa subsp. occidentalis Verne Grant, Alva Grant 1956-5-17 9797 Lassen Just north of Milford on Highway 395 1311 Comment
  CHSC36447  Phlox stansburyi Susan H. Euing 1982-6-4 1 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. Comment
  CHSC71130  Phlox stansburyi Vernon H. Oswald; Lowell Ahart 1998-5-22 9114 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
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  CHSC48338  Phoenicaulis cheiranthoides Vernon Oswald 1986-5-28 2061 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  RSA121476  Phoenicaulis cheiranthoides L. R. Short 1936-4-28 S 335 Lassen Burgess Spring Experimental Range. Lassen Forest. 1738 Comment
  UC1126723  Phoenicaulis cheiranthoides A. Simontacchi 1940-5-17 753 Lassen 1.1 mi ssw of Dixie Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  UC117651  Phoenicaulis cheiranthoides T. S. Brandegee 1892-7-30 Lassen Susanville Comment
  RSA126929  Phragmites australis H. S. Yates 1936-8-11 6063 Lassen Near Red Rock. 1341 Comment
  SEINET3873297  Pinus flexilis Stanley L. Welsh, N. Duane Atwood 2001-6-13 28124 Lassen Ca 2 mi n of jct of Hwy 395 and Hwy 70, e of Beckwourth Pass.; 0 1575 Comment
  CHSC23508  Pinus jeffreyi Wayne O. Baum 1971-7-16 71 -74 Lassen E. slope of Gallatin Peak. 2072 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
  SEINET11610302  Pinus jeffreyi David Charlet 1996-7-8 2288 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  SEINET11610645  Pinus lambertiana David Charlet 1996-7-8 2291 Lassen Diamond Mts; Sierra Nevada Janesville Grade, Great Basin drainage (Honey Lake) 1859 Comment
  SEINET10530766  Pinus lambertiana Katherine L. Morris 1973-5-25 Morris 225 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  CAS-BOT-BC227995  Plagiobothrys David D. Keck; J. Clausen 1935-6-24 3731 Lassen 10 miles S of Likely (Modoc County) 1464 Comment
  UC526162  Plagiobothrys cognatus John Thomas Howell 1934-6-10 11890 Lassen 15 mi. n. Susanville (on rd. to Horse Lake) 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
  RSA0035913  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2008-6-20 14914 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC66237  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7861 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 interface between meadow and forest on the W side of the meadow ca. 0.4 mi S of the cabins. 1633 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
  UC1025083  Plagiobothrys hispidulus Leo Whitney 1933-8-14 2002 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CAS-BOT-BC224970  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  JEPS87508  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  SD149177  Plagiobothrys hispidus John Thomas Howell, Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2160 Comment
  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
  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
  JEPS107444  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  UC1523814  Plagiobothrys leptocladus Gary Schoolcraft 1983-6-20 1010 Lassen Mud Flat , 31-15-22 (31-15-22) 1341 Comment
  UC1191065  Plagiobothrys mollis Robert Ornduff 1959-7-18 5060 Lassen 1 mi e Madeline (on road from Madeline to the Patterson Ranger Station); Modoc National Forest Comment
  RSA337274  Plagiobothrys scouleri Noel Holmgren, Patricia K. Holmgren 1980-7-3 9476 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  CHSC117214  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2016-6-7 20978 Lassen Strand of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS90082  Plagiobothrys tenellus Dean Wm. Taylor with Robert A. Price 1988-6-4 9766 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. watershed, Fall R. Valley 1036 Comment
  JEPS94124  Plagiobothrys tenellus Vernon H. Oswald and Lowell Ahart 1998-5-22 9093 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. of Milford 1255 Comment
  CHSC4752  Platanthera leucostachys R. Carter 1967-7-14 609 Lassen Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  CHSC6278  Platanthera leucostachys M. West 1946-7-7 Lassen Butte Creek. Comment
  UC1951081  Plectritis congesta subsp. brachystemon Debra Valov 2009-4-24 2009010 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 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
  SEINET8658736  Plectritis macrocera C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1924225  Plectritis macrocera Debra Valov 2004-6-8 2004249 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC36850  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade, s of and paralleling Hwy 70, just se of Beckwourth Pass on Plumas-Lassen county line. 1584 Comment
  HSC79990  Pleiacanthus spinosus William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UC1069840  Pleiacanthus spinosus H. S. Yates 1936-8-11 6064 Lassen near Milford; Amedee Quad. 1280 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
  RSA273386  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
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May 9 2012
  UC1136987  Poa X fibrata George A. Fischer and Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat; Lassen Nat'l Forest 1737 Comment
  UC699671  Poa X fibrata Gus Hormay 1944-7-2 Lassen Squaw Valley 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
  RSA295427  Poa bulbosa J. R. Reeder, C. G. Reeder 1981-5-20 7349 Lassen 3.5 km NNW of Janesville. Transition above Long Valley. 1250 Comment
  UC1924231  Poa bulbosa Debra Valov 2004-6-9 2004261 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD57075  Poa bulbosa Beecher Crampton 1964-6-26 7078 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  UCD90624  Poa bulbosa Beecher Crampton 1964-6-27 7096 Lassen ca. 8 miles southeast of Ravendale Bureau Land Management Spanish Springs--Shinn Mtns. Resource Conservation area. 1981 Comment
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 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
  CHSC77269  Poa cusickii subsp. cusickii G. Schoolcraft 1994-7-7 2351 Lassen About 1.5 miles NE of Red Rock Lake. 2042 Comment
  HSC95195  Poa leptocoma subsp. leptocoma Gordon Leppig, J. Cromwell 1997-7-27 629 Lassen Modoc National Forest, Blue Lake Ranch. 1970 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
  SEINET7850259  Poa pratensis B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11508 Lassen Blue Door Flat, 7 or 8 mi. E of Highway 295, on county road 510. 1774 Comment
  JEPS126488  Poa secunda Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-14 CA 350 -075 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the Skedaddle Road, head uphill to the end of private property squares. Comment
  RSA647530  Poa secunda Marion P. Harthill 1972-6-17 820 Lassen Madeline. 1677 Comment
  SEINET175720 Image available Poa secunda Marcus E. Jones 1897-6-25 Lassen Susanville 1341 Comment
  UCD90275  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 miles W of Chester, rte 36. Comment
  CAS-BOT-BC236252  Poa secunda subsp. juncifolia John Thomas Howell 1934-6-14 12172 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CAS-BOT-BC236254  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5447 Lassen 2 miles E of Westwood, in meadow leading down to Mountain Meadows Reservoir 1524 Comment
  CAS-BOT-BC236256  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 miles W of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC247054  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CHSC77270  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2350 Lassen About 1.5 miles NE of Red Rock Lake. 2042 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
  UC1142936  Poa secunda subsp. juncifolia A. L. Hormay 1941-6-25 20 Lassen Burgess Spring; Lassen Nat'l Forest 1676 Comment
  UC718008  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 mi e Westwood (on rd to Fredonyer Pass); Sierra Nevada 1584 Comment
  UCD92243  Poa secunda subsp. juncifolia Beecher Crampton 1960-6-18 5713 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD92385  Poa secunda subsp. juncifolia William Martin 1963-7-18 s.n. Lassen 3-4 miles S of Doyle. Long Valley Creek, Rowland Ranch. Comment
  HSC22383  Poa secunda subsp. secunda D. E. Anderson 1969-7-5 4997 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 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
  UC1024841  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3213 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024933  Poa secunda subsp. secunda Leo Whitney 1935-6-28 3344 Lassen Bieber Comment
  UC1136988  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 219 Lassen Lassen Nat'l Forest 1722 Comment
  UC1142953  Poa secunda subsp. secunda A. L. Hormay 1941-6-26 37 Lassen Bogard Ranger Station, Pine Creek Bogard Ranger Station; Lassen Nat'l Forest 1706 Comment
  UC70959  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Comment
  UCD90488  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  UC1024873  Poa wheeleri Leo Whitney 1935-5-26 3154 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1143003  Poa wheeleri August L. Hormay 1934-5-14 Lassen between Dixie Ranger Station and Patterson Flat; Lassen Nat'l Forest 1767 Comment
  UC773972  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experiment Range; Lassen Forest 1767 Comment
  UC773973  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experiment Range 1859 Comment
  UC1609359  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5675 Lassen ca. 11 mi. (air) n.-n.w. Poison Lake (n. side of 34N12 just e. of the R.R. at Halls Flat Well); Halls Flat Well 1737 Comment
  UC1609361  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5669 Lassen ca. 5.4 mi. (air) n.w. Poison Lake (Halls Flat Rd. (33N18), 1.4 mi. s.-s.w. of Pittville Rd. (Lassen 111, 36N01), w. side of rd.) 1694 Comment
  JEPS112858  Polemonium micranthum Dean Wm. Taylor, Glenn L. Clifton 1992-5-7 12548 B Lassen Eagle Lake Region, Pine Creek, on Forest Road 33N07 ca. 0.8 mile S of Byrgess Flat, 1767 Comment
  RSA0036995  Polemonium micranthum Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18743 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  UC23986  Polemonium occidentale subsp. occidentale M. S. Baker and Frank Nutting 1894-7-31 Lassen Bridge Creek Comment
  CDA20360  Polyctenium fremontii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; No other data provided. 0 Comment
  RSA0065537  Polyctenium fremontii M. P. Harthill 1971-6-21 215 Lassen Susanville. Comment
  SEINET12006546  Polyctenium fremontii C. C. Parry, Lemmon, J. G. 1878-1 s.n. Lassen Madeline Plains 2134 Comment
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  NY661121  Polyctenium williamsiae B. Corbin 2002-6-4 1078 Lassen Mud Flat-south end, East side of Highway 395. 1347.2 Comment
  RSA0004885  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  CAS-BOT-BC167848  Polygala subspinosa H. D. Ripley; R. C. Barneby 1943-6-15 5760 Lassen E. of Viewland 1310 Comment
  UCD109689  Polygala subspinosa T. Wendt; E. Lott 1975-6-12 1031 Lassen 4.5 mi. E of Rte 395 on Smoke Creek Ranch Road, E. of Mud Flat. 1371 Comment
  UC1136918  Polygonum George A. Fischer, Irwin H. Johnson 1933-7-12 F 192 Lassen Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley 1694 Comment
  SEINET10937589  Polygonum amphibium var. stipulaceum Mary Susan Taylor 1974-1 Taylor 312 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC419767  Polygonum argyrocoleon John Thomas Howell 1976-7-20 52030 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC413932  Polygonum aviculare subsp. aviculare John Thomas Howell 1973-7-10 49796 Lassen Susanville 1295 Comment
  JEPS28662  Polygonum bistortoides George W. Gillett 1957-7-22 882 Lassen Snag Lake Lassen Volcanic National Park (campsite near s end) 1850 Comment
  UC849110  Polygonum bistortoides A. A. Heller 1938-6-23 15141 Lassen 2 mi e Westwood Comment
  RSA104503  Polygonum douglasii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  JEPS117591  Polygonum douglasii subsp. douglasii Lowell Ahart, John Dittes 2010-7-31 16978 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1567355  Polygonum douglasii subsp. majus G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC 1554 Comment
  CHSC84438  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  UC773926  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1767 Comment
  JEPS28705  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen draw 1 mi above Butte Lake (on Widow Lake Trail); Lassen Volcanic National Park 1905 Comment
  CHSC61055  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1993-8-3 5748 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Locally abundant in small patches of more or less bare ground along the E side of the swamp. 1932 Comment
  CHSC99126  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  CAS-BOT-BC419859  Polygonum polygaloides subsp. confertiflorum George W. Gillett 1957-7-22 874 Lassen Lassen Volcanic National Park. Snag Lake. 1850 Comment
  CHSC29856  Polygonum polygaloides subsp. kelloggii Robin L. Ondricek 1978-7-5 81 Lassen In grass and among trees along the ne edge of Mahogany Lake. 2057 Comment
  UC1060646  Polygonum polygaloides subsp. kelloggii Herbert L. Mason 1957-7-5 14712 Lassen between Madeline and summit of grade; Madeline Plains Comment
  CAS-BOT-BC419904  Polygonum polygaloides subsp. kelloggii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50649 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  UCD100647  Polygonum ramosissimum Verne Grant; Irving Schneider 1947-8-1 8227 Lassen Southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  CAS-BOT-BC420145  Polygonum ramosissimum subsp. ramosissimum John Thomas Howell 1934-7-8 12501 Lassen Spalding's, Eagle Lake Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  JEPS88215  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1996-6-24 7864 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd.(A1), on w. side of the meadow ca. 0.4 mi. s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  HSC82252  Polygonum spergulariiforme Thomas W. Nelson, Jane P. Nelson 1980-7-6 6009 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  SBBG128041  Polygonum spergulariiforme L. Ahart, J. Dittes 2010-7-31 16979 Lassen ca. 100 yards NE of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  CAS-BOT-BC232546  Polypogon monspeliensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16346 Lassen Along margin of drainage gulley below reservoir, N of road 13.5 miles E of Susanville Comment
  CHSC117532  Polypogon monspeliensis Lowell Ahart; John Dittes 2016-7-3 21147 -A Lassen Scattered along the west edge of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC93665  Polypogon monspeliensis Lowell Ahart; John Dittes 2005-6-2 11967 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
  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
  RSA129377  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen Near Red Rock. 1341 Comment
  UC1024708  Polypogon monspeliensis Leo Whitney 1934-8-6 2136 Lassen Susan River Honey Lake Valley; , Honey Lake Valley 1371 Comment
  UC1100382  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-7-20 1052 Lassen four mi w Adin Comment
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Jun 24 2009
  CHSC52131  Populus fremontii Detzer; Sacks 1977-7-1 3 Lassen Ca. 3 mi se Milford, .5 mi se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  SEINET10885945  Populus tremuloides Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 141 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 Comment
  CHSC99731  Porterella carnosula Lowell Ahart; John Dittes 2008-6-20 14963 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 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC130334  Porterella carnosula M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  UC526144  Porterella carnosula John Thomas Howell 1934-7-7 12466 Lassen near Feather Lake; near Feather Lake Comment
  HSC63956  Porterella carnosula Teresa Prendusi 1980-7-1 Lassen Champs Flat, ca. 8 mi. W of N end of Eagle Lake. 1677 Comment
  SEINET10460824  Porterella carnosula Peter H. Raven 1958-6-17 Raven 13294 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline Comment
  CHSC4850  Potamogeton R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UC1099904  Potamogeton amplifolius Verne Grant, Irving Schneider 1947-8-24 8269 Lassen nw shore of Blue Lake (northern Lassen County) Comment
  JEPS97332  Potamogeton filiformis Vernon H. Oswald 1995-8-26 7219 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  SEINET3892719  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field.; 0 1280 Comment
  UC1099866  Potamogeton foliosus Verne Grant, Irving Schneider 1947-7-29 8181 Lassen 1 mi e (upstream) of Tule Lake; Cedar Creek Comment
  HSC17771  Potamogeton natans Fred J. Kindel 1955-7-14 Lassen Mt. Meadows Reservoir Comment
  RSA323730  Potamogeton pusillus A. 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. 1699 Comment
  CAS-BOT-BC454090  Potamogeton pusillus subsp. tenuissimus Wm. Anderson 1960-6-16 s.n. Lassen Barrow pit along county road 1 mi. nw. of Tanner Ranch, Honey Lake Valley Comment
  CAS-BOT-BC143402  Potentilla John Thomas Howell 1976-7-19 51960 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  JEPS100240  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  CAS-BOT-BC540031  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  SD215713  Potentilla biennis D. F. Howe 1964-7-31 Lassen Parsnip Creek, Warner Mountains, Modoc National Forest 1829 Comment
  UC12514  Potentilla breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  JEPS44188  Potentilla fruticosa Brown and Wieslander 1922-7-25 4 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  CDA26098  Potentilla glandulosa T. C. Fuller 1963-7-15 10903 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC6257  Potentilla glandulosa subsp. ashlandica A. Santos 1946-6-20 Lassen Eagle Lake. Grasshopper valley. 1624 Comment
  CAS-BOT-BC540367  Potentilla gracilis var. fastigiata David D. Keck 1930-7-23 956 b Lassen 3 miles east of Westwood 1524 Comment
  UC506926  Potentilla millefolia George A. Fischer and Irwin H. Johnson 1933-7-14 F. 240 Lassen Patterson R.S. Lassen National Forest, Patterson R.S. 1737 Comment
  CHSC66401  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1996-6-17 7787 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  SJSU5819  Poteridium annuum J. W. Tilden 1960-6-27 1503 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  JEPS126563  Poterium sanguisorba Lowell Ahart, John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS62498  Prunella vulgaris var. lanceolata Brown and Wieslander 1922-7-30 23 Lassen Martin Sprs Eagle Lake; , Martin Sprs Comment
  OBI77048  Prunus andersonii Anthony Baniaga 2011-7-1 412 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  OBI10074  Prunus andersonii H. E. McMinn 1932-8-5 2969 Lassen Susanville to Reno Comment
  SEINET10542398  Prunus andersonii Paul Gallian, David B. Dunn 1971-6-2 Gallian 461 Lassen 6 miles n of hallelujah junction on us hwy 395, in artemisa tridentata, pinyon Pine, jeffrey pine along high ridge and in sandy wash 1402 Comment
  SJSU8180  Prunus andersonii M. D. Fleschner 1965-7-12 Lassen 2 mi SE of Milford near Honey L 1249 Comment
  UCR17286  Prunus virginiana Frank C. Vasek 1975-7-11 750711- 38 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC66398  Prunus virginiana var. demissa Vernon H. Oswald; Lowell Ahart 1996-6-17 7767 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  CAS-BOT-BC239805  Pseudoroegneria spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi. W. of Susanville on rime of plateau overlooking Susan River Canyon 1341 Comment
  UCD91489  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3016 Lassen 3 miles south of Horse Lake. Comment
  UCD91507  Pseudoroegneria spicata Beecher Crampton 1964-6-27 7089 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  SEINET5345381  Pseudotsuga menziesii var. menziesii D. A. Charlet 1996-7-8 2290 Lassen Diamond Mts; Sierra Nevada Janesville Grade, just within National Forest boundary, Great Basin drainage (Honey Lake) 1855 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
  JEPS109942  Psoralidium lanceolatum Dean W. Taylor 2004-5-11 19063 Lassen Calneva Lake; southern end of the lakebed. 1219 Comment
  HSC93745  Pterospora andromedea Gordon Leppig, Sylvia Leppig, Juli Neander, Kai Neander 1998-8-18 1059 Lassen Blue Lake Campground, Modoc National Forest. 1860 Comment
  RSA32005  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles E of Westwood 1524 Comment
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  UC773902  Pterospora andromedea L. R. Short and D. Gish 1936-7-15 S 488 Lassen Burgess Spring Experiment Range 1813 Comment
  SEINET3823221 Image available Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles east of Westwood in leaf mold. Transition Life Zone 1524 Comment
  UCD34874  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs rec. area. Comment
  CHSC93243  Puccinellia lemmonii John Dittes; Scott Chamberlain 2004-6-28 1015 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1445 Comment
  UCD149767  Puccinellia lemmonii William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  RSA647519  Puccinellia nuttalliana Marion P. Harthill 1972-6-17 801 Lassen Standish. Comment
  UCD93431  Puccinellia nuttalliana P. B. Kennedy 1923-6-1 s.n. Lassen edge of Honey Lake. 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-BC147815  Purshia tridentata var. tridentata D. B. Dunn; B. J. Cox 1971-6-2 17784 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 1402 Comment
  UC773873  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
  POM90536  Purshia tridentata var. tridentata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC462758  Pyrola dentata Louella Bass 1973-6-23 EU- 130 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC362265  Pyrrocoma carthamoides var. cusickii John Thomas Howell 1934-7-6 12453 Lassen Harvey Valley Comment
  JEPS19176  Pyrrocoma hirta var. lanulosa Leland S. Smith 1922-1 18 Lassen Windmill flat, nw Lassen County Modoc National Forest Comment
  UC1037291  Pyrrocoma hirta var. lanulosa Leo Whitney 1934-7-10 1671 Lassen ca 14 mi w Eagle Lake (dry meadow near Harvey Valley Spring); Lassen National forest, Harvey Valley 1737 Comment
  UC1136850  Pyrrocoma hirta var. lanulosa George A. Fischer and Irwin H. Johnson 1933-7-14 F. 242 Lassen Patterson R.S. Lassen National Forest, Patterson R.S. 1737 Comment
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Feb 24 2013
  UC35842  Pyrrocoma hirta var. lanulosa M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  POM39970  Pyrrocoma lanceolata Marcus E. Jones 1897-6-30 s.n. Lassen Ranch below Eagle Lake. Susanville, 4 miles. 1524 Comment
  UCD135332  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Hwy 395. 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-BC362321  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee, Honey Lake Valley Comment
  UCD46065  Quercus garryana var. garryana James Griffin 1964-8-4 1272 Lassen Along County road from Little Valley to Dixie Valley, Lassen County, California. 1341 Comment
  CAS-BOT-BC105245  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles W of Susanville 1371 Comment
  UCSB12079  Quercus kelloggii Muller, Cornelius 1956-6-17 Lassen 6 1/2 mi. NW of Milford, 34 mi. SE of Buntingville along W shore of Honey Lake Comment
  UC1187154  Quercus vacciniifolia Jean Langenheim 1957-6-22 4371 Lassen nw Said Valley, ne part of Lassen County Said Valley Comment
  CHSC27739  Ranunculus alismifolius var. hartwegii J. D. Prouty 1978-7-5 17 Lassen NE shore of Mahogany L., S of Eagle L. Meadow around lake. 2060 Comment
  JEPS88527  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1996-6-24 7877 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  CHSC110303  Ranunculus aquatilis var. diffusus L. P. Janeway; B. Castro 2012-7-2 10932 Lassen Modoc Plateau. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1600 Comment
  CHSC66258  Ranunculus aquatilis var. diffusus Vernon H. Oswald; Lowell Ahart 1996-6-24 7877 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
  JEPS97783  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  RSA293370  Ranunculus cymbalaria var. saximontanus Reino Alava 1957-7-5 1135 Lassen Along Highway no. 395, 4.4 miles S of Ravendale. Comment
  RSA523410  Ranunculus cymbalaria var. saximontanus Rodney H. True 1936-6-26 544 Lassen Honey Lake Valley- Willow Creek Valley Road. 1524 Comment
  UC773872  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spring Experiment Range Lassen National Forest 1737 Comment
  UC1776660  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-4-2 2464 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  CHSC115591  Ranunculus macounii Lowell Ahart; John Dittes 2015-7-14 20328 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UC1584003  Ranunculus occidentalis G. Schoolcraft 1990-5-15 2050 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  UC1924217  Ranunculus occidentalis Debra Valov 2004-6-9 2004266 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC506988  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  RSA0062308  Ranunculus occidentalis var. occidentalis Lowell A. Ahart, John Dittes 2011-6-20 17479 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  NY494769  Ranunculus occidentalis var. ultramontanus W. W. Eggleston 1911-5-29 6759 Lassen Vicinity of Doyle Station 1290 Comment
  CAS-BOT-BC362886  Ratibida columnifera John Thomas Howell 1974-7-9 50486 Lassen SW. of Wildcat Point, Eagle Lake 1554 Comment
  UC1587100  Rhaponticum repens G. Schoolcraft 1991-7-31 2203 Lassen just n of Hall Spring; Shinn Mts. 1706 Comment
  UC11663  Ribes aureum J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CDA25528  Ribes cereum J. R. Keck Jr. 1977-7-13 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  UC747359  Ribes cereum G. Thomas Robbins 1945-10-6 2149 Lassen summit Crater Lake Mt. (above lake); Lassen National Forest 2194 Comment
  CAS-BOT-BC212656  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile E of Fredonyer Pass Comment
  UC726449  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mi e Fredonyer Pass 1706 Comment
  UC747328  Ribes roezlii G. Thomas Robbins 1945-10-6 2150 Lassen near sw summit Crater Lake Mountain; Lassen National Forest 2194 Comment
  RSA0024767  Ribes roezlii James Henrickson 1969-9-4 4267 Lassen 4 miles S of Westwood along Highway 147. 1390 Comment
  SEINET10482953  Ribes roezlii Mary Susan Taylor 1974-5-4 Taylor 229 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  SEINET12216573  Ribes roezlii Unknown 1972-1 286 Lassen 1 mi S of Five Points on Dean's Ridge Rd going to Dean's Meadow Comment
  CDA25586  Ribes velutinum J. R. Keck Jr. 1977-8-1 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 Comment
  JEPS87425  Ribes velutinum Vernon H. Oswald and Lowell Ahart 1993-6-14 5547 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake 1566 Comment
  CAS-BOT-BC173959  Ribes viscosissimum John Thomas Howell; Gordon H. True 1973-8-1 50247 Lassen Gold Run Creek road south of Susanville. Diamond Range 1950 Comment
  CAS-BOT-BC363009  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen Lower NE slope of Shaffer Mtn. 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-BC363013  Rigiopappus leptocladus Milo S. Baker 1894-7-1 s.n. Lassen S. side Dixey [Dixie] Mts. Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  UC10717  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-7-1 Lassen Dixey Mts. Comment
  CHSC101064  Rorippa curvisiliqua var. orientalis John Dittes 2008-5-22 1527 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek. 482 Comment
  JEPS121254  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-7-22 18855 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1126740  Rorippa nasturtium-aquaticum Robert W. Gardner 1937-6-16 G- 15 Lassen Burgess Spring Experimental Range Halls Flat Quad., Burgess Spring Experimental Range Comment
  CHSC113076  Rorippa palustris subsp. hispida Lowell Ahart; John Dittes 2013-7-22 18864 Lassen North margin of a duck field, 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
  POM312442  Rorippa sinuata Verne Grant, Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1191531  Rorippa sinuata Verne Grant and Irving Schneider 1947-8-1 8226 Lassen irrigation ditch running s.w. into State Fish & Game nesting area on s.w. end of Section 19 Madeline Plain Comment
  CHSC93661  Rosa californica Lowell Ahart; John Dittes 2005-6-2 11944 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, about 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  CHSC61590  Rosa woodsii subsp. ultramontana Arthur C. Barrett 1915-8-18 33 Lassen Plumas Forest. Laufman Ranger Station. 1463 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
  HSC93474  Rosa woodsii subsp. ultramontana Gordon Leppig, Tony LaBanca 1998-7-13 874 Lassen Modoc National Forest, Blue Lake Ranch. 1799 Comment
  JEPS107934  Rosa woodsii subsp. ultramontana Lowell Ahart, John Dittes 2005-6-2 11944 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, about 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  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
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC19712  Rubus parviflorus M. S. Baker 1890-1 Lassen Milford Comment
  JEPS94540  Rubus parviflorus Vernon Oswald and Lowell Ahart 1997-6-24 8614 Lassen 0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43 1889 Comment
  SEINET11908696  Rubus parviflorus J. Detzer, Sacks 1977-1 11 Lassen ca 2.5 mi SE of Milford, 300 yds E of Laufman Ranger Station, 5 ft E of unimproved USFS road 1372 Comment
  CAS-BOT-BC110481  Rumex B. C. Cain 1925-8-24 85 Lassen 1 mile below Drakesbad, Mount Lassen National Park. 1645 Comment
  CAS-BOT-BC421954  Rumex acetosella Margaret Williams; Louella Bass 1972-10-22 EV 5 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC421956  Rumex acetosella John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49507 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC66865  Rumex fueginus Vernon H. Oswald; Lowell Ahart 1996-9-10 8283 Lassen Mountain Meadows Reservoir SW of Westwood. Uncommon on the embankment of the railroad along the northwest edge of the reservoir. 1539 Comment
  CHSC66730  Rumex occidentalis Vernon H. Oswald; Lowell Ahart 1996-8-1 8117 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  UC1594642  Rumex occidentalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5122 Lassen 1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on logging road paralleling the e side Bridge Creek); Bridge Creek 1719 Comment
  CHSC101061  Rumex paucifolius John Dittes 2008-5-22 1530 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 700 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace of Willow Creek. 482 Comment
  UC1037331  Rumex paucifolius Leo Whitney 1934-7-3 1954 Lassen 14 mi w Eagle Lake (Bogard Ranger Station); Lassen National Forest 1737 Comment
  UC1136917  Rumex paucifolius L. R. Short and B. Gish 1936-6-8 S- 387 Lassen Burgess Spr. Exp. Range Lassen Forest 1743 Comment
  UC1036083  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5152 Lassen 4 to 6 mi s Madeline Comment
  UC452565  Rumex salicifolius var. lacustris Milo S. Baker Lassen near Eagle Lake Comment
  CHSC113065  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
  JEPS119645  Rumex triangulivalvis Lowell Ahart, John Dittes 2012-7-9 18302 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC5006  Sagittaria cuneata L. G. Bennett 1968-7-8 124 Lassen Murrers Meadow, north end, near Eagle Lake. 1493 Comment
  JEPS32201  Sagittaria cuneata Leland S. Smith 1918-7-22 1009 Lassen Blue Lake 1874 Comment
  UC1051438  Sagittaria cuneata Herbert L. Mason 1955-8-13 14647 a Lassen Willow Creek Valley Comment
  CAS-BOT-BC445675  Sagittaria cuneata B. Trowbridge 1977-7-11 5985 Lassen In Willow Creek, vicinity of Rice Canyon, northeast of Susanville 1706 Comment
  CAS-BOT-BC108055  Salix exigua John Thomas Howell 1975-7-23 51403 Lassen Wet ground along Hwy. 395 between Johnstonville and Jonesville - Sierra Nevada 1280 Comment
  CAS-BOT-BC128225  Salix lasiandra subsp. caudata James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-24 4121 Lassen Willow Creek Campground on road between Adin and Said Valley Reservoir Comment
  CAS-BOT-BC128175  Salix lasiandra var. lasiandra G. Schoolcraft 1999-5-7 2822 Lassen Susanville 1371 Comment
  CAS-BOT-BC106964  Salix lasiolepis G. Schoolcraft 1999-5-7 2820 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  RSA0045640  Salix lasiolepis var. lasiolepis Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4, miles (air) northeast of Bieber. 1257 Comment
  CAS-BOT-BC124637  Salix lemmonii M. B. Kildale 1926-9-11 2788 Lassen Susanville 1524 Comment
  CHSC13668  Salix lemmonii E. L. Smith 1971-4-28 946 A Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  CHSC9572  Salix lemmonii E. L. Smith 1971-4-28 946 B Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  POM209469  Salix lemmonii Carleton R. Ball 1932-7-24 687 Lassen Mt. Lassen Highway. 0.6 mile N of Sulphur Works Checking Station. Lassen Volcanic National Park. 1982 Comment
  POM209470  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 685 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  SEINET11987291  Salix lutea J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4121 Lassen Willow Creek Campground on road between adin and Said Valley Reservoir 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
  CDA36352  Salsola gobicola B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  CDA37714  Salsola paulsenii Breckenridge/Filippini 2007-6-14 s.n. Lassen Wendell Plains. 0 Comment
  JEPS59867  Salsola tragus W. L. Jepson 1918-8-2 7791 Lassen Long Valley 1219 Comment
  CDA5749  Salvia aethiopis Margaret Bellue Jul 1949 Lassen Susanville. 0 Comment
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  CAS-BOT-BC238591  Sambucus nigra subsp. caerulea G. Schoolcraft 1997-8-6 2674 Lassen Diamond Mtn. 2316 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
  JEPS103224  Sanicula graveolens G. Schoolcraft 1992-5-1 2235 Lassen W. of Susan Hills Subd. SW. of Susanville 1341 Comment
  CDA23526  Sarcobatus vermiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 A Lassen Wendel. 0 Comment
  CHSC110311  Sarcobatus vermiculatus L. P. Janeway; B. Castro 2012-7-2 10923 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC31116  Sarcobatus vermiculatus J. S. White 1980-4-14 114 Lassen Basin area. 0.1 mi n of US Hwy 395 3.5 mi e of Litchfield. 1341 Comment
  CHSC66854  Sarcobatus vermiculatus Vernon H. Oswald 1996-9-21 8288 Lassen Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. Growing on the edge of the levee road along the N side of Wlillow Creek ca. 0.5 mi E of the parking area on the highway. 1490 Comment
  SJSU14475  Sarcobatus vermiculatus W. D. Pitts 1990-5-29 298 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  UC768791  Sarcobatus vermiculatus R. F. Hoover 1940-9-28 4637 Lassen Leavitt Comment
  UCSB61641  Sarcobatus vermiculatus True, Gordon 1936-6-21 Lassen Honey Lake Valley 1219 Comment
  UC1121106  Sarcodes sanguinea A. Simontacchi 1940-6-17 883 Lassen 1.4 miles S of Patterson Mtn. 1821 Comment
  JEPS1765  Saxifraga nidifica var. nidifica Milo S. Baker 1952-5-23 12422 Lassen e of Chester (Hwy 36) Comment
  JEPS94609  Saxifraga nidifica var. nidifica Vernon H. Oswald and Lowell Ahart 1997-5-27 8499 Lassen on Forest Route 38N04 n Susanville ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi e of Hwy 139) 1546 Comment
  SEINET10333128  Schoenoplectus acutus var. occidentalis R. R. Halse 2012-8-20 8661 Lassen Along State Hwy. 139 at Eagle Lake, ca. 26.6 miles north of Susanville 1558 Comment
  CHSC93678  Schoenoplectus pungens var. longispicatus Lowell Ahart; John Dittes 2005-6-2 11975 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
  JEPS78082  Scirpus acutus var. occidentalis Gary W. Zamzow 1972-7-18 88 Lassen beside Highway 395 16.8 mi s of the intersection with Highway 36; beside Highway 395 1280 Comment
  SEINET3815589 Image available Scirpus microcarpus Marcus E. Jones 1897-1 Lassen Susanville 1341 Comment
  JEPS63795  Scirpus pungens W. L. Jepson 1918-8-2 7785 Lassen 1 mi below Boni Ranch house (lower bench of Long Valley Creek); Long Valley 1371 Comment
  UC2198  Scirpus pungens J. Burtt Davy Jun 17 1897-Jun 24 1897 3286 Lassen sloughs Susan River (Honey Lake Valley); , Honey Lake Valley Comment
  CDA28506  Sclerolinon digynum J. T. Howell, G. H. True 1973-6-28 49490 Lassen Elysian Valley. Comment
  POM313136  Scribneria bolanderi H. L. Mason, Malcom A. Nobs, S. Galen Smith 1949-5-29 759 Lassen On Great Northern Railroad , Highway 299, Nubeiber. Comment
  UC1100464  Scribneria bolanderi Malcolm A. Nobs, S. Galen Smith, Herbert L. Mason 1949-5-29 759 Lassen Nubeiber, on Great Northern Railroad, Highway 299 Nubeiber; , Great Northern Railroad, Highway 299 Comment
  JEPS11413  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  SEINET13751284  Scrophularia desertorum N. H. Holmgren, P. K. Holmgren 1978-6-11 8922 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  SD61030  Scrophularia lanceolata Darley F. Howe 1962-8-2 3923 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc Natl. Forest 1829 Comment
  SEINET8020068  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CAS-BOT-BC5845  Scutellaria holmgreniorum Noel Herman Holmgren; Patricia K. Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy 395 via Rye Patch Canyon 1580 Comment
  CAS-BOT-BC214261  Scutellaria nana G. Schoolcraft 1999-7-7 2855 Lassen N. end of Eagle Lake just ne. of Eagle Lake Campground 1584 Comment
  CAS-BOT-BC214268  Scutellaria nana Richard Olmstead 1984-6-27 584 Lassen Rye Patch Canyon Rd., 13.2 mi E of US 395, turnoff ca 14 mi. S of Ravendale 1548 Comment
  UC506981  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest 1722 Comment
  SEINET13947832 Image available Scutellaria nana G. Schoolcraft 1986-1 1641 Lassen S of Observation Peak ca 1.5 mi E of Post Camp; 5500 ft alt., T33N, R16E, SEC10 1676 Comment
  CAS-BOT-BC240081  Secale cereale R. E. Frenkel 1964-7-12 664 Lassen On California Hwy. 299, 1.5 miles west of Bieber 1249 Comment
  RSA483309  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi south of Ravendale, lower slopes Observation Peak Comment
  RSA647520  Secale cereale Marion P. Harthill 1972-6-16 788 Lassen Doyle 1372 Comment
  CAS-BOT-BC363325  Senecio aronicoides Jean Langenheim 1957-6-26 4372 Lassen Northwest Said Valley, north-eastern part of Lassen County Comment
  UC1063252  Senecio aronicoides A. Simontacchi 1940-5-28 769 Lassen 9.3 mi nw Crater Lake; Halls Flat Quad. 1752 Comment
  CHSC60822  Senecio hydrophiloides Vernon H. Oswald; Lowell Ahart 1993-6-28 5600 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. Meadow. 1725 Comment
  JEPS109870  Senecio hydrophiloides Dean W. Taylor 2007-6-14 20129 Lassen between Gordon Lake and Bullard Lake, along Forest Road 31N31 0.3 miles NE of junction with Forest Road 34N25 (this the junction at the northwest end of Gordon Lake) 1828 Comment
  JEPS17740  Senecio hydrophiloides Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5413 Lassen 4.4 mi s Patterson Ranger Station (in meadow e edge of Long Valley, s end of the Warner Mountains); Modoc National Forest, Warner Mountains, Long Valley 2057 Comment
  UC831836  Senecio hydrophiloides A. A. Heller 1938-6-23 15192 Lassen about 3 mi s Westwood Comment
  CHSC7651  Senecio hydrophilus Beverley J. Wise 1969-5-9 28 Lassen 10.3 mi. east of Susanville on Forest Serv. 8246 off Hwy 36. 1554 Comment
  RSA0012449  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen east of Westwood, the margin bordered with sagebrush, where a tongue of Upper Sonoran protrudes into the Transition Life Zone. Comment
  CHSC30613  Senecio integerrimus L. Maslin 1975-7-1 10 Lassen At the foothill of n Black Mtn. near Eagle Lake Field Station. 1981 Comment
  SEINET10799223  Senecio integerrimus Billy Joe Cox 1971-6-2 Cox 2993 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon Pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CHSC61620  Senecio integerrimus var. exaltatus Arthur C. Barrett 1915-7-1 2 Lassen Laufman Ranger Stat. 1463 Comment
  CDA8643  Senecio integerrimus var. exaltatus G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2800 Lassen 2.0 miles (3.2 km) north of Grasshopper Road on Westside Road. Dry Valley Ridge, west side of Madeline Plains. Comment
  CAS-BOT-BC363984  Senecio integerrimus var. major John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49176 Lassen Elysian Valley northwest of Janesville 1325 Comment
  RSA0013303  Senecio serra var. serra Bruce Bartholomew, B. Anderson 1988-7-22 4496 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC1562580  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
  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
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  CHSC105238  Sidalcea glaucescens Lowell Ahart; John Dittes 2010-7-31 17016 Lassen On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  UC1587031  Sidalcea glaucescens G. Schoolcraft 1991-7-30 2198 Lassen East slope of Widow Mountain 1859 Comment
  HSC22981  Sidalcea malviflora John Pratt 1970-7-9 71 Lassen 1677 Comment
  CAS-BOT-BC205780  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC27642  Sidalcea oregana George Deniso 1978-7-21 88 Lassen Colman L., W shore, SE of Eagle L. 1962 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
  SEINET11986397  Sidalcea oregana N. E. Heiken 1978-1 86 Lassen Colman Lake, several mi S of Eagle Lake 1963 Comment
  UC506975  Sidalcea oregana subsp. oregana George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Lassen Forest , Patterson Flat 1737 Comment
  JEPS67272  Sidalcea oregana subsp. spicata Brown and Wieslander 1922-7-18 65 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  CAS-BOT-BC384312  Silene bernardina Clarence R. Quick 1966-7-22 66 -52 Lassen Susanville-Pittville road, Blacks Mtn. Hdqts.; Halls Flat, 9 m. e. of Hat Creek 1706 Comment
  RSA438833  Silene bernardina Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  CAS-BOT-BC136280  Silene douglasii A. G. Brennels 1928-7-3 7 Lassen Lassen Forest, Jesson Valley 1463 Comment
  CHSC5229  Silene douglasii J. B. Kimsey 1946-6-10 Lassen Eagle Lake. Pelican Point. 1584 Comment
  JEPS50913  Silene douglasii Brown and Wieslander 1922-7-23 33 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  CAS-BOT-BC389551  Silene nuda John Thomas Howell 1974-7-10 50547 Lassen Elysian Valley 1325 Comment
  CHSC115594  Silene nuda Lowell Ahart; John Dittes 2015-7-14 20334 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  CHSC91925  Silene nuda L. P. Janeway 2005-7-31 8511 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  UC569941  Silene nuda E. Sawyer 1935-6-27 223 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UCD18970  Silene nuda subsp. insectivora Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  CHSC111252  Sisymbrium altissimum L. P. Janeway; B. Castro 2012-7-2 10935 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  CHSC112766  Sisymbrium altissimum Lowell Ahart; John Dittes 2013-7-23 18884 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC5235  Sisymbrium altissimum L. Harman 1946-6-26 Lassen Webb's, Eagle Lake. 1584 Comment
  JEPS107467  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-1 11850 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS114987  Sisyrinchium bellum Lowell Ahart, John Dittes 2008-6-20 14964 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC3888  Smilacina stellata J. Burtt Davy Jun 17 1897-Jun 24 1897 3387 Lassen Adobe Meadows Honey Lake Valley, Byer's Ranch Comment
  UCR88862  Smilacina stellata J. T. Howell, G. H. True, Margaret Williams 1973-6-28 49421 Lassen Sierra Nevada Mtns/ Modoc Plateau, Elysian Valley, west of Janesville 1326 Comment
  JEPS127179  Solanum dulcamara Lowell Ahart, John Dittes 2016-7-15 21226 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 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
  HSC95264  Sparganium emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC21349  Sparganium emersum Fred J. Kindel 1955-6-27 Lassen Mt. Meadows Reservoir. Comment
  CDA37488  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC66285  Sparganium emersum subsp. emersum Vernon H. Oswald; Lowell Ahart 1996-6-24 7871 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
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CAS-BOT-BC390559  Spergularia rubra G. Schoolcraft 1997-8-6 2656 Lassen Along w. fork of Gold Run Creek about 8 miles sw of Susanville 1859 Comment
  UCD136228  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 1645 Comment
  CAS-BOT-BC149630  Spiraea douglasii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49445 Lassen Elysian Valley, west of Janesville 1325 Comment
  SEINET3818362  Spiranthes romanzoffiana A. A. Heller 1938-1 Lassen Comment
  CHSC66279  Spirodela polyrhiza Vernon H. Oswald; Lowell Ahart 1996-6-24 7883 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 a meadow on th E side of Papoose Creek N of the springs. 1633 Comment
  CHSC5277  Stachys ajugoides var. rigida P. Balch 1955-7-17 Lassen Papoose Creek, near Gallatin's. Eagle Lake. 1615 Comment
  SEINET5337331  Stellaria longipes C. G. Gulling 1905-1 1551 Lassen Big Meadows Comment
  POM101721  Stellaria longipes F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  SJSU8510  Stellaria longipes subsp. longipes J. W. Tilden 1960-6-27 1516 Lassen by Moonlight Rd c. 5 mi E of Westwood 1524 Comment
  CHSC93702  Stellaria longipes var. longipes Lowell Ahart; John Dittes 2005-6-2 11992 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
  JEPS114768  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2008-6-20 14956 Lassen About 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC92676  Stenotus acaulis L. P. Janeway; B. Castro 2005-7-10 8487 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  POM42274  Stenotus acaulis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  HSC80000  Stipa hymenoides William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  JEPS126469  Stipa thurberiana Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -039 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  SEINET10523055  Stipa thurberiana Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2873 Lassen Hallelujah Jct. intersection of US Hwy 395 & Calif. Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  JEPS95901  Suaeda occidentalis Lowell Ahart 1999-9-13 8211 A Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  CHSC48447  Swertia albicaulis var. albicaulis Vernon Oswald 1986-5-28 2060 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  CHSC5251  Swertia albicaulis var. albicaulis 1944-6-23 Lassen Eagle Lake. 1615 Comment
  JEPS94613  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8488 Lassen e side of Hwy 139 at a small farm stock pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  POM68227  Symphoricarpos acutus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1120025  Symphoricarpos mollis A. Simontacchi 1940-6-24 890 Lassen 6.4 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1950 Comment
  CHSC36147  Symphoricarpos rotundifolius var. rotundifolius George Deniso 1978-7-21 95 Lassen Several meters S of Colman Lake, SE of Eagle L., 1962 Comment
  CHSC64841  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald 1995-6-26 6932 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 9.9 mi W of Madeline, ca 0.5 mi W of the reservoir at Fleming Sheep Camp and along the stream coming from the same. 1609 Comment
  CHSC83620  Symphoricarpos rotundifolius var. rotundifolius L. P. Janeway 2001-6-28 7236 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955